{ "id": "/recife/festivals/1978", "place": { "id": "3390760", "slug": "recife", "name": "Recife", "region": "Pernambuco, Brazil", "country": "BR", "lat": -8.05389, "lon": -34.88111, "elevation_m": 8, "tz": "America/Recife" }, "year": 1978, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/recife/festivals/1978/ekadashi?on=1978-01-05", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-01-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36470, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-01-04T17:48:54-03:00", "utc": "1978-01-04T20:48:54Z", "ms": 252794933722.99567 }, "end": { "local": "1978-01-05T15:15:40-03:00", "utc": "1978-01-05T18:15:40Z", "ms": 252872139706.22858 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-01-04T17:48:54-03:00", "utc": "1978-01-04T20:48:54Z", "ms": 252794933722.99567 }, "end": { "local": "1978-01-05T15:15:40-03:00", "utc": "1978-01-05T18:15:40Z", "ms": 252872139706.22858 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-01-04", "window": { "start": { "local": "1978-01-04T05:07:18-03:00", "utc": "1978-01-04T08:07:18Z", "ms": 252749238357.4866 }, "end": { "local": "1978-01-04T05:07:18-03:00", "utc": "1978-01-04T08:07:18Z", "ms": 252749238357.4866 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-01-05", "window": { "start": { "local": "1978-01-05T05:07:50-03:00", "utc": "1978-01-05T08:07:50Z", "ms": 252835669991.60077 }, "end": { "local": "1978-01-05T05:07:50-03:00", "utc": "1978-01-05T08:07:50Z", "ms": 252835669991.60077 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:49 on Wed 4 Jan to 15:16 on Thu 5 Jan.", "fact": "1978-01-04T20:48:54Z → 1978-01-05T18:15:40Z" }, { "step": "kaala", "text": "Sunrise is at 05:07 on the 4th and 05:08 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 36470 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Recife, 1978: Thursday 5 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": "1978-01-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-01-05", "confidence": "determinate" } ], "quote": "In Recife, Saphalā Ekādaśī 1978 falls on Thursday 5 January. Ekādaśī runs from 17:49 on Wed 4 Jan to 15:16 on Thu 5 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-01-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-01-06", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-01-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20025, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-01-06T12:08:33-03:00", "utc": "1978-01-06T15:08:33Z", "ms": 252947312841.31305 }, "end": { "local": "1978-01-07T08:36:24-03:00", "utc": "1978-01-07T11:36:24Z", "ms": 253020984479.13116 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-01-06T12:08:33-03:00", "utc": "1978-01-06T15:08:33Z", "ms": 252947312841.31305 }, "end": { "local": "1978-01-07T08:36:24-03:00", "utc": "1978-01-07T11:36:24Z", "ms": 253020984479.13116 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-01-06", "window": { "start": { "local": "1978-01-06T17:42:18-03:00", "utc": "1978-01-06T20:42:18Z", "ms": 252967337939.78665 }, "end": { "local": "1978-01-06T19:13:51-03:00", "utc": "1978-01-06T22:13:51Z", "ms": 252972830600.278 } }, "covered_min": 92, "window_min": 92, "qualifies": true }, { "local_date": "1978-01-07", "window": { "start": { "local": "1978-01-07T17:42:39-03:00", "utc": "1978-01-07T20:42:39Z", "ms": 253053758806.31967 }, "end": { "local": "1978-01-07T19:14:13-03:00", "utc": "1978-01-07T22:14:13Z", "ms": 253059252844.01688 } }, "covered_min": 0, "window_min": 92, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:09 on Fri 6 Jan to 08:36 on Sat 7 Jan.", "fact": "1978-01-06T15:08:33Z → 1978-01-07T11:36:24Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:42–19:14 on the 6th, 17:43–19:14 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 92 of 92 minutes on the 6th and 0 of 92 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 20025 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Recife, 1978: Friday 6 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": "1978-01-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-01-06", "confidence": "determinate" } ], "quote": "In Recife, Kṛṣṇa Pradoṣa Vrata 1978 falls on Friday 6 January. Trayodaśī runs from 12:09 on Fri 6 Jan to 08:36 on Sat 7 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-01-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shivaratri?on=1978-01-07", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-01-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17978, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-01-07T08:36:24-03:00", "utc": "1978-01-07T11:36:24Z", "ms": 253020984479.13116 }, "end": { "local": "1978-01-08T04:49:40-03:00", "utc": "1978-01-08T07:49:40Z", "ms": 253093779849.8403 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-01-07T08:36:24-03:00", "utc": "1978-01-07T11:36:24Z", "ms": 253020984479.13116 }, "end": { "local": "1978-01-08T04:49:40-03:00", "utc": "1978-01-08T07:49:40Z", "ms": 253093779849.8403 } }, "kaala": "nishita", "days": [ { "local_date": "1978-01-06", "window": { "start": { "local": "1978-01-06T23:01:35-03:00", "utc": "1978-01-07T02:01:35Z", "ms": 252986495416.62927 }, "end": { "local": "1978-01-06T23:49:35-03:00", "utc": "1978-01-07T02:49:35Z", "ms": 252989375416.62927 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-01-07", "window": { "start": { "local": "1978-01-07T23:02:01-03:00", "utc": "1978-01-08T02:02:01Z", "ms": 253072921447.68423 }, "end": { "local": "1978-01-07T23:50:01-03:00", "utc": "1978-01-08T02:50:01Z", "ms": 253075801447.68423 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:36 on Sat 7 Jan to 04:50 on Sun 8 Jan.", "fact": "1978-01-07T11:36:24Z → 1978-01-08T07:49:40Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:02–23:50 on the 6th, 23:02–23:50 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 17978 s" }, { "step": "ruling", "text": "Śivarātri, Recife, 1978: Saturday 7 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": "1978-01-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-01-07", "confidence": "determinate" } ], "quote": "In Recife, Śivarātri 1978 falls on Saturday 7 January. Caturdaśī runs from 08:36 on Sat 7 Jan to 04:50 on Sun 8 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/shivaratri?on=1978-01-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/vinayaka-chaturthi?on=1978-01-12", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-01-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4009, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-01-11T15:07:29-03:00", "utc": "1978-01-11T18:07:29Z", "ms": 253390049293.98962 }, "end": { "local": "1978-01-12T12:58:38-03:00", "utc": "1978-01-12T15:58:38Z", "ms": 253468717652.09335 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-01-11T15:07:29-03:00", "utc": "1978-01-11T18:07:29Z", "ms": 253390049293.98962 }, "end": { "local": "1978-01-12T12:58:38-03:00", "utc": "1978-01-12T15:58:38Z", "ms": 253468717652.09335 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-01-11", "window": { "start": { "local": "1978-01-11T11:03:25-03:00", "utc": "1978-01-11T14:03:25Z", "ms": 253375405193.37787 }, "end": { "local": "1978-01-11T11:51:25-03:00", "utc": "1978-01-11T14:51:25Z", "ms": 253378285193.37787 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-01-12", "window": { "start": { "local": "1978-01-12T11:03:49-03:00", "utc": "1978-01-12T14:03:49Z", "ms": 253461828591.12878 }, "end": { "local": "1978-01-12T11:51:49-03:00", "utc": "1978-01-12T14:51:49Z", "ms": 253464708591.12878 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:07 on Wed 11 Jan to 12:59 on Thu 12 Jan.", "fact": "1978-01-11T18:07:29Z → 1978-01-12T15:58:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:03–11:51 on the 11th, 11:04–11:52 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4009 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Recife, 1978: Thursday 12 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": "1978-01-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-01-12", "confidence": "determinate" } ], "quote": "In Recife, Vināyaka Caturthī 1978 falls on Thursday 12 January. Caturthī runs from 15:07 on Wed 11 Jan to 12:59 on Thu 12 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/vinayaka-chaturthi?on=1978-01-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19143, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1978-01-13T23:03:30-03:00", "utc": "1978-01-14T02:03:30Z", "ms": 253591409956.62323 }, "end": { "local": "1978-02-12T12:05:40-03:00", "utc": "1978-02-12T15:05:40Z", "ms": 256143939667.8633 } }, "span": { "of": "transit", "start": { "local": "1978-01-13T23:03:30-03:00", "utc": "1978-01-14T02:03:30Z", "ms": 253591409956.62323 }, "end": { "local": "1978-01-13T23:03:30-03:00", "utc": "1978-01-14T02:03:30Z", "ms": 253591409956.62323 } }, "kaala": "sunset-day", "days": [ { "local_date": "1978-01-13", "window": { "start": { "local": "1978-01-12T17:44:11-03:00", "utc": "1978-01-12T20:44:11Z", "ms": 253485850860.81247 }, "end": { "local": "1978-01-13T17:44:27-03:00", "utc": "1978-01-13T20:44:27Z", "ms": 253572266647.30536 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1978-01-14", "window": { "start": { "local": "1978-01-13T17:44:27-03:00", "utc": "1978-01-13T20:44:27Z", "ms": 253572266647.30536 }, "end": { "local": "1978-01-14T17:44:42-03:00", "utc": "1978-01-14T20:44:42Z", "ms": 253658681513.36743 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1978-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 23:03 on Fri 13 Jan.", "fact": "1978-01-14T02:03:30Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 17:44, and the day of the 14th ends at 17:45.", "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 19143 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Saturday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Recife, 1978: Friday 13 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "bhogi", "follows": { "festival": "pongal", "days": -1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1978-01-12", "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": "1978-01-12", "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 Recife, Bhogi 1978 falls on Friday 13 January. It is kept the day before Pongal, which falls on Saturday 14 January. The Sun enters Makara at 23:03 on Fri 13 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 midnight, or counted from sunrise, as in Orissa, it is 12 January.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3390, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1978-01-13T23:03:30-03:00", "utc": "1978-01-14T02:03:30Z", "ms": 253591409956.62323 }, "end": { "local": "1978-02-12T12:05:40-03:00", "utc": "1978-02-12T15:05:40Z", "ms": 256143939667.8633 } }, "span": { "of": "transit", "start": { "local": "1978-01-13T23:03:30-03:00", "utc": "1978-01-14T02:03:30Z", "ms": 253591409956.62323 }, "end": { "local": "1978-01-13T23:03:30-03:00", "utc": "1978-01-14T02:03:30Z", "ms": 253591409956.62323 } }, "kaala": "civil-day", "days": [ { "local_date": "1978-01-13", "window": { "start": { "local": "1978-01-13T00:00:00-03:00", "utc": "1978-01-13T03:00:00Z", "ms": 253508400000 }, "end": { "local": "1978-01-14T00:00:00-03:00", "utc": "1978-01-14T03:00:00Z", "ms": 253594800000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1978-01-14", "window": { "start": { "local": "1978-01-14T00:00:00-03:00", "utc": "1978-01-14T03:00:00Z", "ms": 253594800000 }, "end": { "local": "1978-01-15T00:00:00-03:00", "utc": "1978-01-15T03:00:00Z", "ms": 253681200000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 23:03 on Fri 13 Jan.", "fact": "1978-01-14T02:03:30Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Recife.", "fact": "civil-day: midnight-to-midnight · America/Recife" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from midnight. 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 midnight → only-day · margin 3390 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Recife, 1978: Friday 13 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": "1978-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1978-01-13", "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": "1978-01-14", "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 Recife, Makara Saṅkrānti 1978 falls on Friday 13 January. The Sun enters Makara at 23:03 on Fri 13 Jan, and the rule counts the day from midnight. 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 January.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19143, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1978-01-13T23:03:30-03:00", "utc": "1978-01-14T02:03:30Z", "ms": 253591409956.62323 }, "end": { "local": "1978-02-12T12:05:40-03:00", "utc": "1978-02-12T15:05:40Z", "ms": 256143939667.8633 } }, "span": { "of": "transit", "start": { "local": "1978-01-13T23:03:30-03:00", "utc": "1978-01-14T02:03:30Z", "ms": 253591409956.62323 }, "end": { "local": "1978-01-13T23:03:30-03:00", "utc": "1978-01-14T02:03:30Z", "ms": 253591409956.62323 } }, "kaala": "sunset-day", "days": [ { "local_date": "1978-01-13", "window": { "start": { "local": "1978-01-12T17:44:11-03:00", "utc": "1978-01-12T20:44:11Z", "ms": 253485850860.81247 }, "end": { "local": "1978-01-13T17:44:27-03:00", "utc": "1978-01-13T20:44:27Z", "ms": 253572266647.30536 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1978-01-14", "window": { "start": { "local": "1978-01-13T17:44:27-03:00", "utc": "1978-01-13T20:44:27Z", "ms": 253572266647.30536 }, "end": { "local": "1978-01-14T17:44:42-03:00", "utc": "1978-01-14T20:44:42Z", "ms": 253658681513.36743 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 23:03 on Fri 13 Jan.", "fact": "1978-01-14T02:03:30Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 17:44, and the day of the 14th ends at 17:45.", "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 19143 s" }, { "step": "ruling", "text": "Pongal, Recife, 1978: Saturday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "pongal", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "not_evaluated": "The rule that heads the solar festivals, the day \"taken to begin from midnight\" (p. 106), is not applied to Pongal. It is kept on the first day of the month of Makara as the Tamil districts count it, a transit after sunset going to the next day (p. 244); the Rashtriya Panchang prints Pongal so.", "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1978-01-13", "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": "1978-01-13", "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 Recife, Pongal 1978 falls on Saturday 14 January. The Sun enters Makara at 23:03 on Fri 13 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 midnight, or counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19143, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1978-01-13T23:03:30-03:00", "utc": "1978-01-14T02:03:30Z", "ms": 253591409956.62323 }, "end": { "local": "1978-02-12T12:05:40-03:00", "utc": "1978-02-12T15:05:40Z", "ms": 256143939667.8633 } }, "span": { "of": "transit", "start": { "local": "1978-01-13T23:03:30-03:00", "utc": "1978-01-14T02:03:30Z", "ms": 253591409956.62323 }, "end": { "local": "1978-01-13T23:03:30-03:00", "utc": "1978-01-14T02:03:30Z", "ms": 253591409956.62323 } }, "kaala": "sunset-day", "days": [ { "local_date": "1978-01-13", "window": { "start": { "local": "1978-01-12T17:44:11-03:00", "utc": "1978-01-12T20:44:11Z", "ms": 253485850860.81247 }, "end": { "local": "1978-01-13T17:44:27-03:00", "utc": "1978-01-13T20:44:27Z", "ms": 253572266647.30536 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1978-01-14", "window": { "start": { "local": "1978-01-13T17:44:27-03:00", "utc": "1978-01-13T20:44:27Z", "ms": 253572266647.30536 }, "end": { "local": "1978-01-14T17:44:42-03:00", "utc": "1978-01-14T20:44:42Z", "ms": 253658681513.36743 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1978-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 23:03 on Fri 13 Jan.", "fact": "1978-01-14T02:03:30Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 17:44, and the day of the 14th ends at 17:45.", "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 19143 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Saturday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Recife, 1978: Sunday 15 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "mattu-pongal", "follows": { "festival": "pongal", "days": 1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1978-01-14", "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": "1978-01-14", "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 Recife, Mattu Pongal 1978 falls on Sunday 15 January. It is kept the day after Pongal, which falls on Saturday 14 January. The Sun enters Makara at 23:03 on Fri 13 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 midnight, or counted from sunrise, as in Orissa, it is 14 January.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-01-19", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-01-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35564, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-01-18T16:50:20-03:00", "utc": "1978-01-18T19:50:20Z", "ms": 254001019858.10507 }, "end": { "local": "1978-01-19T19:22:28-03:00", "utc": "1978-01-19T22:22:28Z", "ms": 254096548407.61392 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-01-18T16:50:20-03:00", "utc": "1978-01-18T19:50:20Z", "ms": 254001019858.10507 }, "end": { "local": "1978-01-19T19:22:28-03:00", "utc": "1978-01-19T22:22:28Z", "ms": 254096548407.61392 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-01-19", "window": { "start": { "local": "1978-01-19T05:14:46-03:00", "utc": "1978-01-19T08:14:46Z", "ms": 254045685641.54846 }, "end": { "local": "1978-01-19T05:14:46-03:00", "utc": "1978-01-19T08:14:46Z", "ms": 254045685641.54846 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-01-20", "window": { "start": { "local": "1978-01-20T05:15:12-03:00", "utc": "1978-01-20T08:15:12Z", "ms": 254132112207.24435 }, "end": { "local": "1978-01-20T05:15:12-03:00", "utc": "1978-01-20T08:15:12Z", "ms": 254132112207.24435 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:50 on Wed 18 Jan to 19:22 on Thu 19 Jan.", "fact": "1978-01-18T19:50:20Z → 1978-01-19T22:22:28Z" }, { "step": "kaala", "text": "Sunrise is at 05:15 on the 19th and 05:15 on the 20th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 19th and is not on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35564 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Recife, 1978: Thursday 19 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-01-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-01-19", "confidence": "determinate" } ], "quote": "In Recife, Putradā Ekādaśī 1978 falls on Thursday 19 January. Ekādaśī runs from 16:50 on Wed 18 Jan to 19:22 on Thu 19 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-01-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-01-21", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-01-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9648, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-01-20T21:58:37-03:00", "utc": "1978-01-21T00:58:37Z", "ms": 254192316782.679 }, "end": { "local": "1978-01-22T00:29:53-03:00", "utc": "1978-01-22T03:29:53Z", "ms": 254287792858.3773 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-01-20T21:58:37-03:00", "utc": "1978-01-21T00:58:37Z", "ms": 254192316782.679 }, "end": { "local": "1978-01-22T00:29:53-03:00", "utc": "1978-01-22T03:29:53Z", "ms": 254287792858.3773 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-01-20", "window": { "start": { "local": "1978-01-20T17:45:51-03:00", "utc": "1978-01-20T20:45:51Z", "ms": 254177150692.79822 }, "end": { "local": "1978-01-20T19:17:49-03:00", "utc": "1978-01-20T22:17:49Z", "ms": 254182669032.25302 } }, "covered_min": 0, "window_min": 92, "qualifies": false }, { "local_date": "1978-01-21", "window": { "start": { "local": "1978-01-21T17:45:59-03:00", "utc": "1978-01-21T20:45:59Z", "ms": 254263558809.22342 }, "end": { "local": "1978-01-21T19:17:59-03:00", "utc": "1978-01-21T22:17:59Z", "ms": 254269079464.07654 } }, "covered_min": 92, "window_min": 92, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:59 on Fri 20 Jan to 00:30 on Sun 22 Jan.", "fact": "1978-01-21T00:58:37Z → 1978-01-22T03:29:53Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:46–19:18 on the 20th, 17:46–19:18 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 92 minutes on the 20th and 92 of 92 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9648 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Recife, 1978: Saturday 21 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": "1978-01-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-01-21", "confidence": "determinate" } ], "quote": "In Recife, Śukla Pradoṣa Vrata 1978 falls on Saturday 21 January. Trayodaśī runs from 21:59 on Fri 20 Jan to 00:30 on Sun 22 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-01-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/sankashta-chaturthi?on=1978-01-27", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-01-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38951, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-01-27T09:21:34-03:00", "utc": "1978-01-27T12:21:34Z", "ms": 254751694157.4183 }, "end": { "local": "1978-01-28T10:06:29-03:00", "utc": "1978-01-28T13:06:29Z", "ms": 254840788846.52237 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-01-27T09:21:34-03:00", "utc": "1978-01-27T12:21:34Z", "ms": 254751694157.4183 }, "end": { "local": "1978-01-28T10:06:29-03:00", "utc": "1978-01-28T13:06:29Z", "ms": 254840788846.52237 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-01-27", "window": { "start": { "local": "1978-01-27T20:12:00-03:00", "utc": "1978-01-27T23:12:00Z", "ms": 254790720086.32565 }, "end": { "local": "1978-01-27T20:12:00-03:00", "utc": "1978-01-27T23:12:00Z", "ms": 254790720086.32565 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-01-28", "window": { "start": { "local": "1978-01-28T20:55:40-03:00", "utc": "1978-01-28T23:55:40Z", "ms": 254879740012.37766 }, "end": { "local": "1978-01-28T20:55:40-03:00", "utc": "1978-01-28T23:55:40Z", "ms": 254879740012.37766 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:22 on Fri 27 Jan to 10:06 on Sat 28 Jan.", "fact": "1978-01-27T12:21:34Z → 1978-01-28T13:06:29Z" }, { "step": "kaala", "text": "Moonrise is at 20:12 on the 27th and 20:56 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 38951 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Recife, 1978: Friday 27 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": "1978-01-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-01-27", "confidence": "determinate" } ], "quote": "In Recife, Saṅkaṣṭa Caturthī 1978 falls on Friday 27 January. Caturthī runs from 09:22 on Fri 27 Jan to 10:06 on Sat 28 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/sankashta-chaturthi?on=1978-01-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/ekadashi?on=1978-02-03", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5617, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-02-03T03:46:46-03:00", "utc": "1978-02-03T06:46:46Z", "ms": 255336405600.98572 }, "end": { "local": "1978-02-04T00:55:18-03:00", "utc": "1978-02-04T03:55:18Z", "ms": 255412518348.68045 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-02-03T03:46:46-03:00", "utc": "1978-02-03T06:46:46Z", "ms": 255336405600.98572 }, "end": { "local": "1978-02-04T00:55:18-03:00", "utc": "1978-02-04T03:55:18Z", "ms": 255412518348.68045 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-02-03", "window": { "start": { "local": "1978-02-03T05:20:23-03:00", "utc": "1978-02-03T08:20:23Z", "ms": 255342022809.15012 }, "end": { "local": "1978-02-03T05:20:23-03:00", "utc": "1978-02-03T08:20:23Z", "ms": 255342022809.15012 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-02-04", "window": { "start": { "local": "1978-02-04T05:20:40-03:00", "utc": "1978-02-04T08:20:40Z", "ms": 255428440293.66934 }, "end": { "local": "1978-02-04T05:20:40-03:00", "utc": "1978-02-04T08:20:40Z", "ms": 255428440293.66934 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:47 on Fri 3 Feb to 00:55 on Sat 4 Feb.", "fact": "1978-02-03T06:46:46Z → 1978-02-04T03:55:18Z" }, { "step": "kaala", "text": "Sunrise is at 05:20 on the 3rd and 05:21 on the 4th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 3rd and is not on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5617 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Recife, 1978: Friday 3 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-03", "confidence": "determinate" } ], "quote": "In Recife, Ṣaṭtilā Ekādaśī 1978 falls on Friday 3 February. Ekādaśī runs from 03:47 on Fri 3 Feb to 00:55 on Sat 4 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-02-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-02-05", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2326, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-02-04T21:45:05-03:00", "utc": "1978-02-05T00:45:05Z", "ms": 255487504735.0616 }, "end": { "local": "1978-02-05T18:24:49-03:00", "utc": "1978-02-05T21:24:49Z", "ms": 255561889345.26828 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-02-04T21:45:05-03:00", "utc": "1978-02-05T00:45:05Z", "ms": 255487504735.0616 }, "end": { "local": "1978-02-05T18:24:49-03:00", "utc": "1978-02-05T21:24:49Z", "ms": 255561889345.26828 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-02-04", "window": { "start": { "local": "1978-02-04T17:46:10-03:00", "utc": "1978-02-04T20:46:10Z", "ms": 255473169557.01797 }, "end": { "local": "1978-02-04T19:18:48-03:00", "utc": "1978-02-04T22:18:48Z", "ms": 255478727898.70703 } }, "covered_min": 0, "window_min": 93, "qualifies": false }, { "local_date": "1978-02-05", "window": { "start": { "local": "1978-02-05T17:46:03-03:00", "utc": "1978-02-05T20:46:03Z", "ms": 255559563154.27438 }, "end": { "local": "1978-02-05T19:18:45-03:00", "utc": "1978-02-05T22:18:45Z", "ms": 255565124504.43027 } }, "covered_min": 39, "window_min": 93, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:45 on Sat 4 Feb to 18:25 on Sun 5 Feb.", "fact": "1978-02-05T00:45:05Z → 1978-02-05T21:24:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:46–19:19 on the 4th, 17:46–19:19 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 93 minutes on the 4th and 39 of 93 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 2326 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Recife, 1978: Sunday 5 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": "1978-02-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-05", "confidence": "determinate" } ], "quote": "In Recife, Kṛṣṇa Pradoṣa Vrata 1978 falls on Sunday 5 February. Trayodaśī runs from 21:45 on Sat 4 Feb to 18:25 on Sun 5 Feb and covers 39 of 93 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-02-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shivaratri?on=1978-02-05", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17089, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-02-05T18:24:49-03:00", "utc": "1978-02-05T21:24:49Z", "ms": 255561889345.26828 }, "end": { "local": "1978-02-06T15:04:20-03:00", "utc": "1978-02-06T18:04:20Z", "ms": 255636260238.04483 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-02-05T18:24:49-03:00", "utc": "1978-02-05T21:24:49Z", "ms": 255561889345.26828 }, "end": { "local": "1978-02-06T15:04:20-03:00", "utc": "1978-02-06T18:04:20Z", "ms": 255636260238.04483 } }, "kaala": "nishita", "days": [ { "local_date": "1978-02-05", "window": { "start": { "local": "1978-02-05T23:09:38-03:00", "utc": "1978-02-06T02:09:38Z", "ms": 255578978217.3589 }, "end": { "local": "1978-02-05T23:57:38-03:00", "utc": "1978-02-06T02:57:38Z", "ms": 255581858217.3589 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-02-06", "window": { "start": { "local": "1978-02-06T23:09:42-03:00", "utc": "1978-02-07T02:09:42Z", "ms": 255665382297.7206 }, "end": { "local": "1978-02-06T23:57:42-03:00", "utc": "1978-02-07T02:57:42Z", "ms": 255668262297.7206 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 18:25 on Sun 5 Feb to 15:04 on Mon 6 Feb.", "fact": "1978-02-05T21:24:49Z → 1978-02-06T18:04:20Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:10–23:58 on the 5th, 23:10–23:58 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 17089 s" }, { "step": "ruling", "text": "Śivarātri, Recife, 1978: Sunday 5 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": "1978-02-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-05", "confidence": "determinate" } ], "quote": "In Recife, Śivarātri 1978 falls on Sunday 5 February. Caturdaśī runs from 18:25 on Sun 5 Feb to 15:04 on Mon 6 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/shivaratri?on=1978-02-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33823, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-02-05T18:24:49-03:00", "utc": "1978-02-05T21:24:49Z", "ms": 255561889345.26828 }, "end": { "local": "1978-02-06T15:04:20-03:00", "utc": "1978-02-06T18:04:20Z", "ms": 255636260238.04483 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-02-05T18:24:49-03:00", "utc": "1978-02-05T21:24:49Z", "ms": 255561889345.26828 }, "end": { "local": "1978-02-06T15:04:20-03:00", "utc": "1978-02-06T18:04:20Z", "ms": 255636260238.04483 } }, "kaala": "arunodaya", "days": [ { "local_date": "1978-02-06", "window": { "start": { "local": "1978-02-06T03:48:32-03:00", "utc": "1978-02-06T06:48:32Z", "ms": 255595711930.28754 }, "end": { "local": "1978-02-06T05:21:13-03:00", "utc": "1978-02-06T08:21:13Z", "ms": 255601273280.44342 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "1978-02-07", "window": { "start": { "local": "1978-02-07T03:48:44-03:00", "utc": "1978-02-07T06:48:44Z", "ms": 255682124377.98737 }, "end": { "local": "1978-02-07T05:21:29-03:00", "utc": "1978-02-07T08:21:29Z", "ms": 255687688770.81165 } }, "covered_min": 0, "window_min": 93, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 18:25 on Sun 5 Feb to 15:04 on Mon 6 Feb.", "fact": "1978-02-05T21:24:49Z → 1978-02-06T18:04:20Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 03:49–05:21 on the 6th, 03:49–05:21 on the 7th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 93 of 93 minutes on the 6th and 0 of 93 on the 7th.", "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 33823 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Recife, 1978: Monday 6 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": "1978-02-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-06", "confidence": "determinate" } ], "quote": "In Recife, Yama Tarpaṇa 1978 falls on Monday 6 February. Caturdaśī runs from 18:25 on Sun 5 Feb to 15:04 on Mon 6 Feb and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21913, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-02-10T05:04:31-03:00", "utc": "1978-02-10T08:04:31Z", "ms": 255945870930.3851 }, "end": { "local": "1978-02-11T04:09:47-03:00", "utc": "1978-02-11T07:09:47Z", "ms": 256028987432.8366 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-02-10T05:04:31-03:00", "utc": "1978-02-10T08:04:31Z", "ms": 255945870930.3851 }, "end": { "local": "1978-02-11T04:09:47-03:00", "utc": "1978-02-11T07:09:47Z", "ms": 256028987432.8366 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-02-10", "window": { "start": { "local": "1978-02-10T11:09:44-03:00", "utc": "1978-02-10T14:09:44Z", "ms": 255967784259.5176 }, "end": { "local": "1978-02-10T11:57:44-03:00", "utc": "1978-02-10T14:57:44Z", "ms": 255970664259.5176 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-02-11", "window": { "start": { "local": "1978-02-11T11:09:45-03:00", "utc": "1978-02-11T14:09:45Z", "ms": 256054184708.3966 }, "end": { "local": "1978-02-11T11:57:45-03:00", "utc": "1978-02-11T14:57:45Z", "ms": 256057064708.3966 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:05 on Fri 10 Feb to 04:10 on Sat 11 Feb.", "fact": "1978-02-10T08:04:31Z → 1978-02-11T07:09:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 10th, 11:10–11:58 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 21913 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Recife, 1978: Friday 10 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": "1978-02-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-10", "confidence": "determinate" } ], "quote": "In Recife, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1978 falls on Friday 10 February. Caturthī runs from 05:05 on Fri 10 Feb to 04:10 on Sat 11 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31893, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-02-10T05:04:31-03:00", "utc": "1978-02-10T08:04:31Z", "ms": 255945870930.3851 }, "end": { "local": "1978-02-11T04:09:47-03:00", "utc": "1978-02-11T07:09:47Z", "ms": 256028987432.8366 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-02-10T05:04:31-03:00", "utc": "1978-02-10T08:04:31Z", "ms": 255945870930.3851 }, "end": { "local": "1978-02-11T04:09:47-03:00", "utc": "1978-02-11T07:09:47Z", "ms": 256028987432.8366 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-02-09", "window": { "start": { "local": "1978-02-09T17:45:28-03:00", "utc": "1978-02-09T20:45:28Z", "ms": 255905128328.41476 }, "end": { "local": "1978-02-09T19:18:22-03:00", "utc": "1978-02-09T22:18:22Z", "ms": 255910702040.41992 } }, "covered_min": 0, "window_min": 93, "qualifies": false }, { "local_date": "1978-02-10", "window": { "start": { "local": "1978-02-10T17:45:17-03:00", "utc": "1978-02-10T20:45:17Z", "ms": 255991517350.58182 }, "end": { "local": "1978-02-10T19:18:14-03:00", "utc": "1978-02-10T22:18:14Z", "ms": 255997094228.46997 } }, "covered_min": 93, "window_min": 93, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:05 on Fri 10 Feb to 04:10 on Sat 11 Feb.", "fact": "1978-02-10T08:04:31Z → 1978-02-11T07:09:47Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:45–19:18 on the 9th, 17:45–19:18 on the 10th.", "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 93 minutes on the 9th and 93 of 93 on the 10th.", "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 31893 s" }, { "step": "ruling", "text": "Tila Caturthī, Recife, 1978: Friday 10 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": "1978-02-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-10", "confidence": "determinate" } ], "quote": "In Recife, Tila Caturthī 1978 falls on Friday 10 February. Caturthī runs from 05:05 on Fri 10 Feb to 04:10 on Sat 11 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25197, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1978-02-11T04:09:47-03:00", "utc": "1978-02-11T07:09:47Z", "ms": 256028987432.8366 }, "end": { "local": "1978-02-12T04:04:07-03:00", "utc": "1978-02-12T07:04:07Z", "ms": 256115046772.8673 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-02-11T04:09:47-03:00", "utc": "1978-02-11T07:09:47Z", "ms": 256028987432.8366 }, "end": { "local": "1978-02-12T04:04:07-03:00", "utc": "1978-02-12T07:04:07Z", "ms": 256115046772.8673 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-02-11", "window": { "start": { "local": "1978-02-11T11:09:45-03:00", "utc": "1978-02-11T14:09:45Z", "ms": 256054184708.3966 }, "end": { "local": "1978-02-11T11:57:45-03:00", "utc": "1978-02-11T14:57:45Z", "ms": 256057064708.3966 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-02-12", "window": { "start": { "local": "1978-02-12T11:09:44-03:00", "utc": "1978-02-12T14:09:44Z", "ms": 256140584376.45483 }, "end": { "local": "1978-02-12T11:57:44-03:00", "utc": "1978-02-12T14:57:44Z", "ms": 256143464376.45483 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 04:10 on Sat 11 Feb to 04:04 on Sun 12 Feb.", "fact": "1978-02-11T07:09:47Z → 1978-02-12T07:04:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 11th, 11:10–11:58 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25197 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Recife, 1978: Saturday 11 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": "1978-02-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-11", "confidence": "determinate" } ], "quote": "In Recife, Śrī Pañcamī 1978 falls on Saturday 11 February. Pañcamī runs from 04:10 on Sat 11 Feb to 04:04 on Sun 12 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25197, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1978-02-11T04:09:47-03:00", "utc": "1978-02-11T07:09:47Z", "ms": 256028987432.8366 }, "end": { "local": "1978-02-12T04:04:07-03:00", "utc": "1978-02-12T07:04:07Z", "ms": 256115046772.8673 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-02-11T04:09:47-03:00", "utc": "1978-02-11T07:09:47Z", "ms": 256028987432.8366 }, "end": { "local": "1978-02-12T04:04:07-03:00", "utc": "1978-02-12T07:04:07Z", "ms": 256115046772.8673 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-02-11", "window": { "start": { "local": "1978-02-11T11:09:45-03:00", "utc": "1978-02-11T14:09:45Z", "ms": 256054184708.3966 }, "end": { "local": "1978-02-11T11:57:45-03:00", "utc": "1978-02-11T14:57:45Z", "ms": 256057064708.3966 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-02-12", "window": { "start": { "local": "1978-02-12T11:09:44-03:00", "utc": "1978-02-12T14:09:44Z", "ms": 256140584376.45483 }, "end": { "local": "1978-02-12T11:57:44-03:00", "utc": "1978-02-12T14:57:44Z", "ms": 256143464376.45483 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 04:10 on Sat 11 Feb to 04:04 on Sun 12 Feb.", "fact": "1978-02-11T07:09:47Z → 1978-02-12T07:04:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 11th, 11:10–11:58 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25197 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Recife, 1978: Saturday 11 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": "1978-02-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-11", "confidence": "determinate" } ], "quote": "In Recife, Vasanta Pañcamī 1978 falls on Saturday 11 February. Pañcamī runs from 04:10 on Sat 11 Feb to 04:04 on Sun 12 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-14", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2146, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1978-02-13T04:47:01-03:00", "utc": "1978-02-13T07:47:01Z", "ms": 256204020977.52606 }, "end": { "local": "1978-02-14T06:13:37-03:00", "utc": "1978-02-14T09:13:37Z", "ms": 256295617187.8517 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-02-13T04:47:01-03:00", "utc": "1978-02-13T07:47:01Z", "ms": 256204020977.52606 }, "end": { "local": "1978-02-14T06:13:37-03:00", "utc": "1978-02-14T09:13:37Z", "ms": 256295617187.8517 } }, "kaala": "arunodaya", "days": [ { "local_date": "1978-02-13", "window": { "start": { "local": "1978-02-13T03:49:44-03:00", "utc": "1978-02-13T06:49:44Z", "ms": 256200584130.4109 }, "end": { "local": "1978-02-13T05:22:47-03:00", "utc": "1978-02-13T08:22:47Z", "ms": 256206167422.07053 } }, "covered_min": 36, "window_min": 93, "qualifies": true }, { "local_date": "1978-02-14", "window": { "start": { "local": "1978-02-14T03:49:52-03:00", "utc": "1978-02-14T06:49:52Z", "ms": 256286991613.51688 }, "end": { "local": "1978-02-14T05:22:58-03:00", "utc": "1978-02-14T08:22:58Z", "ms": 256292578150.73218 } }, "covered_min": 93, "window_min": 93, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Saptamī runs from 04:47 on Mon 13 Feb to 06:14 on Tue 14 Feb.", "fact": "1978-02-13T07:47:01Z → 1978-02-14T09:13:37Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 03:50–05:23 on the 13th, 03:50–05:23 on the 14th.", "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 36 of 93 minutes on the 13th and 93 of 93 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both dawns qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 2146 s" }, { "step": "ruling", "text": "Ratha Saptamī, Recife, 1978: Tuesday 14 February.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-02-14", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-14", "confidence": "boundary" } ], "quote": "In Recife, Ratha Saptamī 1978 falls on Tuesday 14 February. Saptamī runs from 04:47 on Mon 13 Feb to 06:14 on Tue 14 Feb and covers all of aruṇodaya that dawn. It also reaches the previous dawn for 36 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/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-02-18", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28086, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-02-17T13:11:32-03:00", "utc": "1978-02-17T16:11:32Z", "ms": 256579891864.52603 }, "end": { "local": "1978-02-18T15:41:01-03:00", "utc": "1978-02-18T18:41:01Z", "ms": 256675261185.783 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-02-17T13:11:32-03:00", "utc": "1978-02-17T16:11:32Z", "ms": 256579891864.52603 }, "end": { "local": "1978-02-18T15:41:01-03:00", "utc": "1978-02-18T18:41:01Z", "ms": 256675261185.783 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-02-17", "window": { "start": { "local": "1978-02-17T05:23:26-03:00", "utc": "1978-02-17T08:23:26Z", "ms": 256551806353.75836 }, "end": { "local": "1978-02-17T05:23:26-03:00", "utc": "1978-02-17T08:23:26Z", "ms": 256551806353.75836 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-02-18", "window": { "start": { "local": "1978-02-18T05:23:34-03:00", "utc": "1978-02-18T08:23:34Z", "ms": 256638214455.9818 }, "end": { "local": "1978-02-18T05:23:34-03:00", "utc": "1978-02-18T08:23:34Z", "ms": 256638214455.9818 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 13:12 on Fri 17 Feb to 15:41 on Sat 18 Feb.", "fact": "1978-02-17T16:11:32Z → 1978-02-18T18:41:01Z" }, { "step": "kaala", "text": "Sunrise is at 05:23 on the 17th and 05:24 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 17th and is on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28086 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Recife, 1978: Saturday 18 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-02-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-18", "confidence": "determinate" } ], "quote": "In Recife, Jayā Ekādaśī 1978 falls on Saturday 18 February. Ekādaśī runs from 13:12 on Fri 17 Feb to 15:41 on Sat 18 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-02-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13415, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1978-02-18T15:41:01-03:00", "utc": "1978-02-18T18:41:01Z", "ms": 256675261185.783 }, "end": { "local": "1978-02-19T17:56:51-03:00", "utc": "1978-02-19T20:56:51Z", "ms": 256769811480.59174 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-02-18T15:41:01-03:00", "utc": "1978-02-18T18:41:01Z", "ms": 256675261185.783 }, "end": { "local": "1978-02-19T17:56:51-03:00", "utc": "1978-02-19T20:56:51Z", "ms": 256769811480.59174 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-02-18", "window": { "start": { "local": "1978-02-18T11:09:27-03:00", "utc": "1978-02-18T14:09:27Z", "ms": 256658966539.95255 }, "end": { "local": "1978-02-18T11:57:27-03:00", "utc": "1978-02-18T14:57:27Z", "ms": 256661846539.95255 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-02-19", "window": { "start": { "local": "1978-02-19T11:09:21-03:00", "utc": "1978-02-19T14:09:21Z", "ms": 256745361044.06073 }, "end": { "local": "1978-02-19T11:57:21-03:00", "utc": "1978-02-19T14:57:21Z", "ms": 256748241044.06073 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 15:41 on Sat 18 Feb to 17:57 on Sun 19 Feb.", "fact": "1978-02-18T18:41:01Z → 1978-02-19T20:56:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:09–11:57 on the 18th, 11:09–11:57 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 13415 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Recife, 1978: Sunday 19 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": "1978-02-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-19", "confidence": "determinate" } ], "quote": "In Recife, Bhīṣma Dvādaśī 1978 falls on Sunday 19 February. Dvādaśī runs from 15:41 on Sat 18 Feb to 17:57 on Sun 19 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/pradosha-vrata?on=1978-02-20", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-20", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 831, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-02-19T17:56:51-03:00", "utc": "1978-02-19T20:56:51Z", "ms": 256769811480.59174 }, "end": { "local": "1978-02-20T19:51:57-03:00", "utc": "1978-02-20T22:51:57Z", "ms": 256863117085.5031 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-02-19T17:56:51-03:00", "utc": "1978-02-19T20:56:51Z", "ms": 256769811480.59174 }, "end": { "local": "1978-02-20T19:51:57-03:00", "utc": "1978-02-20T22:51:57Z", "ms": 256863117085.5031 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-02-19", "window": { "start": { "local": "1978-02-19T17:43:00-03:00", "utc": "1978-02-19T20:43:00Z", "ms": 256768980162.00696 }, "end": { "local": "1978-02-19T19:16:27-03:00", "utc": "1978-02-19T22:16:27Z", "ms": 256774586643.89642 } }, "covered_min": 80, "window_min": 93, "qualifies": true }, { "local_date": "1978-02-20", "window": { "start": { "local": "1978-02-20T17:42:41-03:00", "utc": "1978-02-20T20:42:41Z", "ms": 256855360958.09625 }, "end": { "local": "1978-02-20T19:16:11-03:00", "utc": "1978-02-20T22:16:11Z", "ms": 256860970832.91745 } }, "covered_min": 93, "window_min": 93, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:57 on Sun 19 Feb to 19:52 on Mon 20 Feb.", "fact": "1978-02-19T20:56:51Z → 1978-02-20T22:51:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:43–19:16 on the 19th, 17:43–19:16 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 80 of 93 minutes on the 19th and 93 of 93 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 831 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Recife, 1978: Monday 20 February.", "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": "1978-02-20", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-20", "confidence": "boundary" } ], "quote": "In Recife, Śukla Pradoṣa Vrata 1978 falls on Monday 20 February. Trayodaśī runs from 17:57 on Sun 19 Feb to 19:52 on Mon 20 Feb and covers all of pradoṣa that evening. It also reaches the previous evening for 80 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/recife/festivals/1978/pradosha-vrata?on=1978-02-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33909, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-02-21T21:22:17-03:00", "utc": "1978-02-22T00:22:17Z", "ms": 256954937383.8415 }, "end": { "local": "1978-02-22T22:26:20-03:00", "utc": "1978-02-23T01:26:20Z", "ms": 257045179946.6771 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1978-02-21T21:22:17-03:00", "utc": "1978-02-22T00:22:17Z", "ms": 256954937383.8415 }, "end": { "local": "1978-02-22T22:26:20-03:00", "utc": "1978-02-23T01:26:20Z", "ms": 257045179946.6771 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-02-21", "window": { "start": { "local": "1978-02-21T11:09:08-03:00", "utc": "1978-02-21T14:09:08Z", "ms": 256918148026.27533 }, "end": { "local": "1978-02-21T11:57:08-03:00", "utc": "1978-02-21T14:57:08Z", "ms": 256921028026.27533 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-02-22", "window": { "start": { "local": "1978-02-22T11:09:01-03:00", "utc": "1978-02-22T14:09:01Z", "ms": 257004540539.4552 }, "end": { "local": "1978-02-22T11:57:01-03:00", "utc": "1978-02-22T14:57:01Z", "ms": 257007420539.4552 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:22 on Tue 21 Feb to 22:26 on Wed 22 Feb.", "fact": "1978-02-22T00:22:17Z → 1978-02-23T01:26:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:09–11:57 on the 21st, 11:09–11:57 on the 22nd.", "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 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33909 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Recife, 1978: Wednesday 22 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": "1978-02-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-22", "confidence": "determinate" } ], "quote": "In Recife, Māghī Pūrṇimā 1978 falls on Wednesday 22 February. Pūrṇimā runs from 21:22 on Tue 21 Feb to 22:26 on Wed 22 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/sankashta-chaturthi?on=1978-02-26", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-02-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7432, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-02-25T23:04:52-03:00", "utc": "1978-02-26T02:04:52Z", "ms": 257306692086.0093 }, "end": { "local": "1978-02-26T22:29:45-03:00", "utc": "1978-02-27T01:29:45Z", "ms": 257390984527.1286 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1978-02-25T23:04:52-03:00", "utc": "1978-02-26T02:04:52Z", "ms": 257306692086.0093 }, "end": { "local": "1978-02-26T22:29:45-03:00", "utc": "1978-02-27T01:29:45Z", "ms": 257390984527.1286 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-02-25", "window": { "start": { "local": "1978-02-25T19:39:20-03:00", "utc": "1978-02-25T22:39:20Z", "ms": 257294360169.2549 }, "end": { "local": "1978-02-25T19:39:20-03:00", "utc": "1978-02-25T22:39:20Z", "ms": 257294360169.2549 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-02-26", "window": { "start": { "local": "1978-02-26T20:25:53-03:00", "utc": "1978-02-26T23:25:53Z", "ms": 257383552652.11237 }, "end": { "local": "1978-02-26T20:25:53-03:00", "utc": "1978-02-26T23:25:53Z", "ms": 257383552652.11237 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:05 on Sat 25 Feb to 22:30 on Sun 26 Feb.", "fact": "1978-02-26T02:04:52Z → 1978-02-27T01:29:45Z" }, { "step": "kaala", "text": "Moonrise is at 19:39 on the 25th and 20:26 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 25th and is on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7432 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Recife, 1978: Sunday 26 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": "1978-02-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-02-26", "confidence": "determinate" } ], "quote": "In Recife, Saṅkaṣṭa Caturthī 1978 falls on Sunday 26 February. Caturthī runs from 23:05 on Sat 25 Feb to 22:30 on Sun 26 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/sankashta-chaturthi?on=1978-02-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/ekadashi?on=1978-03-05", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-03-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13470, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-03-04T11:46:02-03:00", "utc": "1978-03-04T14:46:02Z", "ms": 257870761583.51434 }, "end": { "local": "1978-03-05T09:08:58-03:00", "utc": "1978-03-05T12:08:58Z", "ms": 257947737984.82263 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1978-03-04T11:46:02-03:00", "utc": "1978-03-04T14:46:02Z", "ms": 257870761583.51434 }, "end": { "local": "1978-03-05T09:08:58-03:00", "utc": "1978-03-05T12:08:58Z", "ms": 257947737984.82263 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-03-04", "window": { "start": { "local": "1978-03-04T05:24:28-03:00", "utc": "1978-03-04T08:24:28Z", "ms": 257847868158.44296 }, "end": { "local": "1978-03-04T05:24:28-03:00", "utc": "1978-03-04T08:24:28Z", "ms": 257847868158.44296 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-03-05", "window": { "start": { "local": "1978-03-05T05:24:28-03:00", "utc": "1978-03-05T08:24:28Z", "ms": 257934268373.2248 }, "end": { "local": "1978-03-05T05:24:28-03:00", "utc": "1978-03-05T08:24:28Z", "ms": 257934268373.2248 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:46 on Sat 4 Mar to 09:09 on Sun 5 Mar.", "fact": "1978-03-04T14:46:02Z → 1978-03-05T12:08:58Z" }, { "step": "kaala", "text": "Sunrise is at 05:24 on the 4th and 05:24 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 13470 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Recife, 1978: Sunday 5 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-03-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-03-05", "confidence": "determinate" } ], "quote": "In Recife, Vijayā Ekādaśī 1978 falls on Sunday 5 March. Ekādaśī runs from 11:46 on Sat 4 Mar to 09:09 on Sun 5 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-03-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-03-06", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-03-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31522, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-03-06T06:30:14-03:00", "utc": "1978-03-06T09:30:14Z", "ms": 258024613579.3242 }, "end": { "local": "1978-03-07T03:56:47-03:00", "utc": "1978-03-07T06:56:47Z", "ms": 258101807079.71936 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1978-03-06T06:30:14-03:00", "utc": "1978-03-06T09:30:14Z", "ms": 258024613579.3242 }, "end": { "local": "1978-03-07T03:56:47-03:00", "utc": "1978-03-07T06:56:47Z", "ms": 258101807079.71936 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-03-05", "window": { "start": { "local": "1978-03-05T17:37:34-03:00", "utc": "1978-03-05T20:37:34Z", "ms": 257978254021.70242 }, "end": { "local": "1978-03-05T19:11:49-03:00", "utc": "1978-03-05T22:11:49Z", "ms": 257983909243.84677 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1978-03-06", "window": { "start": { "local": "1978-03-06T17:37:07-03:00", "utc": "1978-03-06T20:37:07Z", "ms": 258064626795.96826 }, "end": { "local": "1978-03-06T19:11:26-03:00", "utc": "1978-03-06T22:11:26Z", "ms": 258070285571.8097 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:30 on Mon 6 Mar to 03:57 on Tue 7 Mar.", "fact": "1978-03-06T09:30:14Z → 1978-03-07T06:56:47Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:38–19:12 on the 5th, 17:37–19:11 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 94 minutes on the 5th and 94 of 94 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 31522 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Recife, 1978: Monday 6 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-03-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-03-06", "confidence": "determinate" } ], "quote": "In Recife, Kṛṣṇa Pradoṣa Vrata 1978 falls on Monday 6 March. Trayodaśī runs from 06:30 on Mon 6 Mar to 03:57 on Tue 7 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-03-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-03-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6099, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-03-07T03:56:47-03:00", "utc": "1978-03-07T06:56:47Z", "ms": 258101807079.71936 }, "end": { "local": "1978-03-08T01:36:12-03:00", "utc": "1978-03-08T04:36:12Z", "ms": 258179771816.43063 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1978-03-07T03:56:47-03:00", "utc": "1978-03-07T06:56:47Z", "ms": 258101807079.71936 }, "end": { "local": "1978-03-08T01:36:12-03:00", "utc": "1978-03-08T04:36:12Z", "ms": 258179771816.43063 } }, "kaala": "nishita", "days": [ { "local_date": "1978-03-06", "window": { "start": { "local": "1978-03-06T23:06:47-03:00", "utc": "1978-03-07T02:06:47Z", "ms": 258084407205.37366 }, "end": { "local": "1978-03-06T23:54:47-03:00", "utc": "1978-03-07T02:54:47Z", "ms": 258087287205.37366 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-03-07", "window": { "start": { "local": "1978-03-07T23:06:33-03:00", "utc": "1978-03-08T02:06:33Z", "ms": 258170792911.37173 }, "end": { "local": "1978-03-07T23:54:33-03:00", "utc": "1978-03-08T02:54:33Z", "ms": 258173672911.37173 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 03:57 on Tue 7 Mar to 01:36 on Wed 8 Mar.", "fact": "1978-03-07T06:56:47Z → 1978-03-08T04:36:12Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:07–23:55 on the 6th, 23:07–23:55 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. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 6099 s" }, { "step": "ruling", "text": "Mahāśivarātri, Recife, 1978: Tuesday 7 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": "1978-03-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-03-07", "confidence": "determinate" } ], "quote": "In Recife, Mahāśivarātri 1978 falls on Tuesday 7 March. Caturdaśī runs from 03:57 on Tue 7 Mar to 01:36 on Wed 8 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/vinayaka-chaturthi?on=1978-03-12", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-03-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32142, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-03-11T20:49:15-03:00", "utc": "1978-03-11T23:49:15Z", "ms": 258508154852.39438 }, "end": { "local": "1978-03-12T21:13:29-03:00", "utc": "1978-03-13T00:13:29Z", "ms": 258596008948.29654 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1978-03-11T20:49:15-03:00", "utc": "1978-03-11T23:49:15Z", "ms": 258508154852.39438 }, "end": { "local": "1978-03-12T21:13:29-03:00", "utc": "1978-03-13T00:13:29Z", "ms": 258596008948.29654 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-03-11", "window": { "start": { "local": "1978-03-11T11:05:33-03:00", "utc": "1978-03-11T14:05:33Z", "ms": 258473133253.69836 }, "end": { "local": "1978-03-11T11:53:33-03:00", "utc": "1978-03-11T14:53:33Z", "ms": 258476013253.69836 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-03-12", "window": { "start": { "local": "1978-03-12T11:05:17-03:00", "utc": "1978-03-12T14:05:17Z", "ms": 258559517372.2511 }, "end": { "local": "1978-03-12T11:53:17-03:00", "utc": "1978-03-12T14:53:17Z", "ms": 258562397372.2511 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:49 on Sat 11 Mar to 21:13 on Sun 12 Mar.", "fact": "1978-03-11T23:49:15Z → 1978-03-13T00:13:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:06–11:54 on the 11th, 11:05–11:53 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32142 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Recife, 1978: Sunday 12 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": "1978-03-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-03-12", "confidence": "determinate" } ], "quote": "In Recife, Vināyaka Caturthī 1978 falls on Sunday 12 March. Caturthī runs from 20:49 on Sat 11 Mar to 21:13 on Sun 12 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/vinayaka-chaturthi?on=1978-03-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/ekadashi?on=1978-03-20", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-03-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14014, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-03-19T09:17:29-03:00", "utc": "1978-03-19T12:17:29Z", "ms": 259157849166.2697 }, "end": { "local": "1978-03-20T11:11:20-03:00", "utc": "1978-03-20T14:11:20Z", "ms": 259251079769.32217 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1978-03-19T09:17:29-03:00", "utc": "1978-03-19T12:17:29Z", "ms": 259157849166.2697 }, "end": { "local": "1978-03-20T11:11:20-03:00", "utc": "1978-03-20T14:11:20Z", "ms": 259251079769.32217 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-03-19", "window": { "start": { "local": "1978-03-19T05:23:55-03:00", "utc": "1978-03-19T08:23:55Z", "ms": 259143835378.02963 }, "end": { "local": "1978-03-19T05:23:55-03:00", "utc": "1978-03-19T08:23:55Z", "ms": 259143835378.02963 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-03-20", "window": { "start": { "local": "1978-03-20T05:23:51-03:00", "utc": "1978-03-20T08:23:51Z", "ms": 259230231059.15884 }, "end": { "local": "1978-03-20T05:23:51-03:00", "utc": "1978-03-20T08:23:51Z", "ms": 259230231059.15884 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:17 on Sun 19 Mar to 11:11 on Mon 20 Mar.", "fact": "1978-03-19T12:17:29Z → 1978-03-20T14:11:20Z" }, { "step": "kaala", "text": "Sunrise is at 05:24 on the 19th and 05:24 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 14014 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Recife, 1978: Monday 20 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": "1978-03-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-03-20", "confidence": "determinate" } ], "quote": "In Recife, Āmalakī Ekādaśī 1978 falls on Monday 20 March. Ekādaśī runs from 09:17 on Sun 19 Mar to 11:11 on Mon 20 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-03-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-03-21", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-03-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14661, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-03-21T12:35:11-03:00", "utc": "1978-03-21T15:35:11Z", "ms": 259342510839.5215 }, "end": { "local": "1978-03-22T13:24:47-03:00", "utc": "1978-03-22T16:24:47Z", "ms": 259431887404.13104 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1978-03-21T12:35:11-03:00", "utc": "1978-03-21T15:35:11Z", "ms": 259342510839.5215 }, "end": { "local": "1978-03-22T13:24:47-03:00", "utc": "1978-03-22T16:24:47Z", "ms": 259431887404.13104 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-03-21", "window": { "start": { "local": "1978-03-21T17:29:39-03:00", "utc": "1978-03-21T20:29:39Z", "ms": 259360179431.7814 }, "end": { "local": "1978-03-21T19:04:52-03:00", "utc": "1978-03-21T22:04:52Z", "ms": 259365891766.95706 } }, "covered_min": 95, "window_min": 95, "qualifies": true }, { "local_date": "1978-03-22", "window": { "start": { "local": "1978-03-22T17:29:08-03:00", "utc": "1978-03-22T20:29:08Z", "ms": 259446547971.1006 }, "end": { "local": "1978-03-22T19:04:24-03:00", "utc": "1978-03-22T22:04:24Z", "ms": 259452263867.30283 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:35 on Tue 21 Mar to 13:25 on Wed 22 Mar.", "fact": "1978-03-21T15:35:11Z → 1978-03-22T16:24:47Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:30–19:05 on the 21st, 17:29–19:04 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 95 of 95 minutes on the 21st and 0 of 95 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14661 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Recife, 1978: Tuesday 21 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": "1978-03-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-03-21", "confidence": "determinate" } ], "quote": "In Recife, Śukla Pradoṣa Vrata 1978 falls on Tuesday 21 March. Trayodaśī runs from 12:35 on Tue 21 Mar to 13:25 on Wed 22 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-03-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-03-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5065, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-03-23T13:39:11-03:00", "utc": "1978-03-23T16:39:11Z", "ms": 259519151203.04565 }, "end": { "local": "1978-03-24T13:19:59-03:00", "utc": "1978-03-24T16:19:59Z", "ms": 259604398656.81165 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1978-03-23T13:39:11-03:00", "utc": "1978-03-23T16:39:11Z", "ms": 259519151203.04565 }, "end": { "local": "1978-03-24T13:19:59-03:00", "utc": "1978-03-24T16:19:59Z", "ms": 259604398656.81165 } }, "kaala": "sayahna", "days": [ { "local_date": "1978-03-23", "window": { "start": { "local": "1978-03-23T15:03:37-03:00", "utc": "1978-03-23T18:03:37Z", "ms": 259524216590.23718 }, "end": { "local": "1978-03-23T17:28:36-03:00", "utc": "1978-03-23T20:28:36Z", "ms": 259532916439.64212 } }, "covered_min": 145, "window_min": 145, "qualifies": true }, { "local_date": "1978-03-24", "window": { "start": { "local": "1978-03-24T15:03:10-03:00", "utc": "1978-03-24T18:03:10Z", "ms": 259610590358.02573 }, "end": { "local": "1978-03-24T17:28:05-03:00", "utc": "1978-03-24T20:28:05Z", "ms": 259619284863.12747 } }, "covered_min": 0, "window_min": 145, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 13:39 on Thu 23 Mar to 13:20 on Fri 24 Mar.", "fact": "1978-03-23T16:39:11Z → 1978-03-24T16:19:59Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:04–17:29 on the 23rd, 15:03–17:28 on the 24th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 145 of 145 minutes on the 23rd and 0 of 145 on the 24th.", "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 5065 s" }, { "step": "ruling", "text": "Holikā Dahana, Recife, 1978: Thursday 23 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": "1978-03-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-03-23", "confidence": "determinate" } ], "quote": "In Recife, Holikā Dahana 1978 falls on Thursday 23 March. Pūrṇimā runs from 13:39 on Thu 23 Mar to 13:20 on Fri 24 Mar and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-03-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5065, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-03-23T13:39:11-03:00", "utc": "1978-03-23T16:39:11Z", "ms": 259519151203.04565 }, "end": { "local": "1978-03-24T13:19:59-03:00", "utc": "1978-03-24T16:19:59Z", "ms": 259604398656.81165 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1978-03-23T13:39:11-03:00", "utc": "1978-03-23T16:39:11Z", "ms": 259519151203.04565 }, "end": { "local": "1978-03-24T13:19:59-03:00", "utc": "1978-03-24T16:19:59Z", "ms": 259604398656.81165 } }, "kaala": "sayahna", "days": [ { "local_date": "1978-03-23", "window": { "start": { "local": "1978-03-23T15:03:37-03:00", "utc": "1978-03-23T18:03:37Z", "ms": 259524216590.23718 }, "end": { "local": "1978-03-23T17:28:36-03:00", "utc": "1978-03-23T20:28:36Z", "ms": 259532916439.64212 } }, "covered_min": 145, "window_min": 145, "qualifies": true }, { "local_date": "1978-03-24", "window": { "start": { "local": "1978-03-24T15:03:10-03:00", "utc": "1978-03-24T18:03:10Z", "ms": 259610590358.02573 }, "end": { "local": "1978-03-24T17:28:05-03:00", "utc": "1978-03-24T20:28:05Z", "ms": 259619284863.12747 } }, "covered_min": 0, "window_min": 145, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "1978-03-23", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 13:39 on Thu 23 Mar to 13:20 on Fri 24 Mar.", "fact": "1978-03-23T16:39:11Z → 1978-03-24T16:19:59Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:04–17:29 on the 23rd, 15:03–17:28 on the 24th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 145 of 145 minutes on the 23rd and 0 of 145 on the 24th.", "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 5065 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Thursday 23 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Recife, 1978: Friday 24 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": "1978-03-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-03-24", "confidence": "determinate" } ], "quote": "In Recife, Holī 1978 falls on Friday 24 March. It is kept the day after Holikā Dahana, which falls on Thursday 23 March. Pūrṇimā runs from 13:39 on Thu 23 Mar to 13:20 on Fri 24 Mar and covers all of sāyāhna on the 23rd.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25625, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1978-03-24T13:19:59-03:00", "utc": "1978-03-24T16:19:59Z", "ms": 259604398656.81165 }, "end": { "local": "1978-03-25T12:30:32-03:00", "utc": "1978-03-25T15:30:32Z", "ms": 259687832436.48813 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-03-24T13:19:59-03:00", "utc": "1978-03-24T16:19:59Z", "ms": 259604398656.81165 }, "end": { "local": "1978-03-25T12:30:32-03:00", "utc": "1978-03-25T15:30:32Z", "ms": 259687832436.48813 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-03-24", "window": { "start": { "local": "1978-03-24T05:23:32-03:00", "utc": "1978-03-24T08:23:32Z", "ms": 259575812337.61874 }, "end": { "local": "1978-03-24T05:23:32-03:00", "utc": "1978-03-24T08:23:32Z", "ms": 259575812337.61874 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-03-25", "window": { "start": { "local": "1978-03-25T05:23:27-03:00", "utc": "1978-03-25T08:23:27Z", "ms": 259662207402.81662 }, "end": { "local": "1978-03-25T05:23:27-03:00", "utc": "1978-03-25T08:23:27Z", "ms": 259662207402.81662 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 13:20 on Fri 24 Mar to 12:31 on Sat 25 Mar.", "fact": "1978-03-24T16:19:59Z → 1978-03-25T15:30:32Z" }, { "step": "kaala", "text": "Sunrise is at 05:24 on the 24th and 05:23 on the 25th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be current at sunrise. It is not on the 24th and is on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25625 s" }, { "step": "ruling", "text": "Vasantotsava, Recife, 1978: Saturday 25 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasantotsava", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 1 Vasantotsava (current at sunrise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "sunrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-03-25", "confidence": "determinate" } ], "quote": "In Recife, Vasantotsava 1978 falls on Saturday 25 March. Pratipadā runs from 13:20 on Fri 24 Mar to 12:31 on Sat 25 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/sankashta-chaturthi?on=1978-03-27", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-03-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37357, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-03-27T09:39:05-03:00", "utc": "1978-03-27T12:39:05Z", "ms": 259850344665.44083 }, "end": { "local": "1978-03-28T07:46:48-03:00", "utc": "1978-03-28T10:46:48Z", "ms": 259930007780.28647 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-03-27T09:39:05-03:00", "utc": "1978-03-27T12:39:05Z", "ms": 259850344665.44083 }, "end": { "local": "1978-03-28T07:46:48-03:00", "utc": "1978-03-28T10:46:48Z", "ms": 259930007780.28647 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-03-27", "window": { "start": { "local": "1978-03-27T20:01:42-03:00", "utc": "1978-03-27T23:01:42Z", "ms": 259887701990.96698 }, "end": { "local": "1978-03-27T20:01:42-03:00", "utc": "1978-03-27T23:01:42Z", "ms": 259887701990.96698 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-03-28", "window": { "start": { "local": "1978-03-28T20:55:40-03:00", "utc": "1978-03-28T23:55:40Z", "ms": 259977339861.90408 }, "end": { "local": "1978-03-28T20:55:40-03:00", "utc": "1978-03-28T23:55:40Z", "ms": 259977339861.90408 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:39 on Mon 27 Mar to 07:47 on Tue 28 Mar.", "fact": "1978-03-27T12:39:05Z → 1978-03-28T10:46:48Z" }, { "step": "kaala", "text": "Moonrise is at 20:02 on the 27th and 20:56 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 37357 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Recife, 1978: Monday 27 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-03-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-03-27", "confidence": "determinate" } ], "quote": "In Recife, Saṅkaṣṭa Caturthī 1978 falls on Monday 27 March. Caturthī runs from 09:39 on Mon 27 Mar to 07:47 on Tue 28 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/sankashta-chaturthi?on=1978-03-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34901, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1978-03-31T01:18:00-03:00", "utc": "1978-03-31T04:18:00Z", "ms": 260165880431.61163 }, "end": { "local": "1978-03-31T23:03:59-03:00", "utc": "1978-04-01T02:03:59Z", "ms": 260244239328.4559 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-03-31T01:18:00-03:00", "utc": "1978-03-31T04:18:00Z", "ms": 260165880431.61163 }, "end": { "local": "1978-03-31T23:03:59-03:00", "utc": "1978-04-01T02:03:59Z", "ms": 260244239328.4559 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-03-31", "window": { "start": { "local": "1978-03-31T10:59:41-03:00", "utc": "1978-03-31T13:59:41Z", "ms": 260200781049.76965 }, "end": { "local": "1978-03-31T11:47:41-03:00", "utc": "1978-03-31T14:47:41Z", "ms": 260203661049.76965 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-04-01", "window": { "start": { "local": "1978-04-01T10:59:23-03:00", "utc": "1978-04-01T13:59:23Z", "ms": 260287163097.34534 }, "end": { "local": "1978-04-01T11:47:23-03:00", "utc": "1978-04-01T14:47:23Z", "ms": 260290043097.34534 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 01:18 on Fri 31 Mar to 23:04 on Fri 31 Mar.", "fact": "1978-03-31T04:18:00Z → 1978-04-01T02:03:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:00–11:48 on the 31st, 10:59–11:47 on the 1st.", "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 31st and 0 of 48 on the 1st.", "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 34901 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Recife, 1978: Friday 31 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitalashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Sitalastami, (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-03-31", "confidence": "determinate" } ], "quote": "In Recife, Śītalāṣṭamī 1978 falls on Friday 31 March. Aṣṭamī runs from 01:18 on Fri 31 Mar to 23:04 on Fri 31 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-04-03", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37991, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-04-02T18:49:32-03:00", "utc": "1978-04-02T21:49:32Z", "ms": 260401772415.9956 }, "end": { "local": "1978-04-03T16:55:39-03:00", "utc": "1978-04-03T19:55:39Z", "ms": 260481339169.90897 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-02T18:49:32-03:00", "utc": "1978-04-02T21:49:32Z", "ms": 260401772415.9956 }, "end": { "local": "1978-04-03T16:55:39-03:00", "utc": "1978-04-03T19:55:39Z", "ms": 260481339169.90897 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-04-03", "window": { "start": { "local": "1978-04-03T05:22:43-03:00", "utc": "1978-04-03T08:22:43Z", "ms": 260439762976.89627 }, "end": { "local": "1978-04-03T05:22:43-03:00", "utc": "1978-04-03T08:22:43Z", "ms": 260439762976.89627 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-04-04", "window": { "start": { "local": "1978-04-04T05:22:38-03:00", "utc": "1978-04-04T08:22:38Z", "ms": 260526158390.52356 }, "end": { "local": "1978-04-04T05:22:38-03:00", "utc": "1978-04-04T08:22:38Z", "ms": 260526158390.52356 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:50 on Sun 2 Apr to 16:56 on Mon 3 Apr.", "fact": "1978-04-02T21:49:32Z → 1978-04-03T19:55:39Z" }, { "step": "kaala", "text": "Sunrise is at 05:23 on the 3rd and 05:23 on the 4th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 3rd and is not on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37991 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Recife, 1978: Monday 3 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-04-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-03", "confidence": "determinate" } ], "quote": "In Recife, Pāpamocanī Ekādaśī 1978 falls on Monday 3 April. Ekādaśī runs from 18:50 on Sun 2 Apr to 16:56 on Mon 3 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-04-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-04-04", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7622, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-04-04T15:15:20-03:00", "utc": "1978-04-04T18:15:20Z", "ms": 260561719573.92673 }, "end": { "local": "1978-04-05T13:52:25-03:00", "utc": "1978-04-05T16:52:25Z", "ms": 260643144625.09888 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-04T15:15:20-03:00", "utc": "1978-04-04T18:15:20Z", "ms": 260561719573.92673 }, "end": { "local": "1978-04-05T13:52:25-03:00", "utc": "1978-04-05T16:52:25Z", "ms": 260643144625.09888 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-04-04", "window": { "start": { "local": "1978-04-04T17:22:22-03:00", "utc": "1978-04-04T20:22:22Z", "ms": 260569341773.0406 }, "end": { "local": "1978-04-04T18:58:23-03:00", "utc": "1978-04-04T21:58:23Z", "ms": 260575103394.17273 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1978-04-05", "window": { "start": { "local": "1978-04-05T17:21:52-03:00", "utc": "1978-04-05T20:21:52Z", "ms": 260655711558.90994 }, "end": { "local": "1978-04-05T18:57:57-03:00", "utc": "1978-04-05T21:57:57Z", "ms": 260661476632.7063 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:15 on Tue 4 Apr to 13:52 on Wed 5 Apr.", "fact": "1978-04-04T18:15:20Z → 1978-04-05T16:52:25Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:22–18:58 on the 4th, 17:22–18:58 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 96 of 96 minutes on the 4th and 0 of 96 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 7622 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Recife, 1978: Tuesday 4 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": "1978-04-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-04", "confidence": "determinate" } ], "quote": "In Recife, Kṛṣṇa Pradoṣa Vrata 1978 falls on Tuesday 4 April. Trayodaśī runs from 15:15 on Tue 4 Apr to 13:52 on Wed 5 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-04-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shivaratri?on=1978-04-05", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32746, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-04-05T13:52:25-03:00", "utc": "1978-04-05T16:52:25Z", "ms": 260643144625.09888 }, "end": { "local": "1978-04-06T12:50:59-03:00", "utc": "1978-04-06T15:50:59Z", "ms": 260725858979.33188 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-05T13:52:25-03:00", "utc": "1978-04-05T16:52:25Z", "ms": 260643144625.09888 }, "end": { "local": "1978-04-06T12:50:59-03:00", "utc": "1978-04-06T15:50:59Z", "ms": 260725858979.33188 } }, "kaala": "nishita", "days": [ { "local_date": "1978-04-05", "window": { "start": { "local": "1978-04-05T22:58:11-03:00", "utc": "1978-04-06T01:58:11Z", "ms": 260675890585.6463 }, "end": { "local": "1978-04-05T23:46:11-03:00", "utc": "1978-04-06T02:46:11Z", "ms": 260678770585.6463 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-04-06", "window": { "start": { "local": "1978-04-06T22:57:54-03:00", "utc": "1978-04-07T01:57:54Z", "ms": 260762273517.6083 }, "end": { "local": "1978-04-06T23:45:54-03:00", "utc": "1978-04-07T02:45:54Z", "ms": 260765153517.6083 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:52 on Wed 5 Apr to 12:51 on Thu 6 Apr.", "fact": "1978-04-05T16:52:25Z → 1978-04-06T15:50:59Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:58–23:46 on the 5th, 22:58–23:46 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 32746 s" }, { "step": "ruling", "text": "Śivarātri, Recife, 1978: Wednesday 5 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": "1978-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-05", "confidence": "determinate" } ], "quote": "In Recife, Śivarātri 1978 falls on Wednesday 5 April. Caturdaśī runs from 13:52 on Wed 5 Apr to 12:51 on Thu 6 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/shivaratri?on=1978-04-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1395, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1978-04-07T12:15:08-03:00", "utc": "1978-04-07T15:15:08Z", "ms": 260810108446.95917 }, "end": { "local": "1978-04-08T12:08:37-03:00", "utc": "1978-04-08T15:08:37Z", "ms": 260896116953.92432 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-07T12:15:08-03:00", "utc": "1978-04-07T15:15:08Z", "ms": 260810108446.95917 }, "end": { "local": "1978-04-08T12:08:37-03:00", "utc": "1978-04-08T15:08:37Z", "ms": 260896116953.92432 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-04-07", "window": { "start": { "local": "1978-04-07T10:57:39-03:00", "utc": "1978-04-07T13:57:39Z", "ms": 260805458664.21204 }, "end": { "local": "1978-04-07T11:45:39-03:00", "utc": "1978-04-07T14:45:39Z", "ms": 260808338664.21204 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-04-08", "window": { "start": { "local": "1978-04-08T10:57:22-03:00", "utc": "1978-04-08T13:57:22Z", "ms": 260891841947.71344 }, "end": { "local": "1978-04-08T11:45:22-03:00", "utc": "1978-04-08T14:45:22Z", "ms": 260894721947.71344 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 12:15 on Fri 7 Apr to 12:09 on Sat 8 Apr.", "fact": "1978-04-07T15:15:08Z → 1978-04-08T15:08:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:58–11:46 on the 7th, 10:57–11:45 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1395 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Recife, 1978: Saturday 8 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": "1978-04-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-08", "confidence": "determinate" } ], "quote": "In Recife, Navarātrārambha (Caitra) (Chaitra Navratri) 1978 falls on Saturday 8 April. Pratipadā runs from 12:15 on Fri 7 Apr to 12:09 on Sat 8 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2947, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1978-04-09T12:34:12-03:00", "utc": "1978-04-09T15:34:12Z", "ms": 260984052166.33643 }, "end": { "local": "1978-04-10T13:33:01-03:00", "utc": "1978-04-10T16:33:01Z", "ms": 261073981124.47678 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-09T12:34:12-03:00", "utc": "1978-04-09T15:34:12Z", "ms": 260984052166.33643 }, "end": { "local": "1978-04-10T13:33:01-03:00", "utc": "1978-04-10T16:33:01Z", "ms": 261073981124.47678 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-04-09", "window": { "start": { "local": "1978-04-09T10:57:05-03:00", "utc": "1978-04-09T13:57:05Z", "ms": 260978225465.63376 }, "end": { "local": "1978-04-09T11:45:05-03:00", "utc": "1978-04-09T14:45:05Z", "ms": 260981105465.63376 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-04-10", "window": { "start": { "local": "1978-04-10T10:56:49-03:00", "utc": "1978-04-10T13:56:49Z", "ms": 261064609231.88754 }, "end": { "local": "1978-04-10T11:44:49-03:00", "utc": "1978-04-10T14:44:49Z", "ms": 261067489231.88754 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 12:34 on Sun 9 Apr to 13:33 on Mon 10 Apr.", "fact": "1978-04-09T15:34:12Z → 1978-04-10T16:33:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:57–11:45 on the 9th, 10:57–11:45 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: unstated → only-day · margin 2947 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Recife, 1978: Monday 10 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": "1978-04-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-10", "confidence": "boundary" } ], "quote": "In Recife, Gaurī Tṛtīyā (Gangaur) 1978 falls on Monday 10 April. Tṛtīyā runs from 12:34 on Sun 9 Apr to 13:33 on Mon 10 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2947, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1978-04-09T12:34:12-03:00", "utc": "1978-04-09T15:34:12Z", "ms": 260984052166.33643 }, "end": { "local": "1978-04-10T13:33:01-03:00", "utc": "1978-04-10T16:33:01Z", "ms": 261073981124.47678 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-09T12:34:12-03:00", "utc": "1978-04-09T15:34:12Z", "ms": 260984052166.33643 }, "end": { "local": "1978-04-10T13:33:01-03:00", "utc": "1978-04-10T16:33:01Z", "ms": 261073981124.47678 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-04-09", "window": { "start": { "local": "1978-04-09T10:57:05-03:00", "utc": "1978-04-09T13:57:05Z", "ms": 260978225465.63376 }, "end": { "local": "1978-04-09T11:45:05-03:00", "utc": "1978-04-09T14:45:05Z", "ms": 260981105465.63376 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-04-10", "window": { "start": { "local": "1978-04-10T10:56:49-03:00", "utc": "1978-04-10T13:56:49Z", "ms": 261064609231.88754 }, "end": { "local": "1978-04-10T11:44:49-03:00", "utc": "1978-04-10T14:44:49Z", "ms": 261067489231.88754 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 12:34 on Sun 9 Apr to 13:33 on Mon 10 Apr.", "fact": "1978-04-09T15:34:12Z → 1978-04-10T16:33:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:57–11:45 on the 9th, 10:57–11:45 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: paraviddha → only-day · margin 2947 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Recife, 1978: Monday 10 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": "1978-04-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-10", "confidence": "boundary" } ], "quote": "In Recife, Saubhāgya Śayana Vrata 1978 falls on Monday 10 April. Tṛtīyā runs from 12:34 on Sun 9 Apr to 13:33 on Mon 10 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/vinayaka-chaturthi?on=1978-04-11", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6492, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-04-10T13:33:01-03:00", "utc": "1978-04-10T16:33:01Z", "ms": 261073981124.47678 }, "end": { "local": "1978-04-11T15:03:41-03:00", "utc": "1978-04-11T18:03:41Z", "ms": 261165821342.38876 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-10T13:33:01-03:00", "utc": "1978-04-10T16:33:01Z", "ms": 261073981124.47678 }, "end": { "local": "1978-04-11T15:03:41-03:00", "utc": "1978-04-11T18:03:41Z", "ms": 261165821342.38876 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-04-10", "window": { "start": { "local": "1978-04-10T10:56:49-03:00", "utc": "1978-04-10T13:56:49Z", "ms": 261064609231.88754 }, "end": { "local": "1978-04-10T11:44:49-03:00", "utc": "1978-04-10T14:44:49Z", "ms": 261067489231.88754 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-04-11", "window": { "start": { "local": "1978-04-11T10:56:33-03:00", "utc": "1978-04-11T13:56:33Z", "ms": 261150993260.59363 }, "end": { "local": "1978-04-11T11:44:33-03:00", "utc": "1978-04-11T14:44:33Z", "ms": 261153873260.59363 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:33 on Mon 10 Apr to 15:04 on Tue 11 Apr.", "fact": "1978-04-10T16:33:01Z → 1978-04-11T18:03:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:57–11:45 on the 10th, 10:57–11:45 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 0 of 48 minutes on the 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6492 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Recife, 1978: Tuesday 11 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": "1978-04-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-11", "confidence": "determinate" } ], "quote": "In Recife, Vināyaka Caturthī 1978 falls on Tuesday 11 April. Caturthī runs from 13:33 on Mon 10 Apr to 15:04 on Tue 11 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/vinayaka-chaturthi?on=1978-04-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11948, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1978-04-11T15:03:41-03:00", "utc": "1978-04-11T18:03:41Z", "ms": 261165821342.38876 }, "end": { "local": "1978-04-12T17:01:39-03:00", "utc": "1978-04-12T20:01:39Z", "ms": 261259298752.51108 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-11T15:03:41-03:00", "utc": "1978-04-11T18:03:41Z", "ms": 261165821342.38876 }, "end": { "local": "1978-04-12T17:01:39-03:00", "utc": "1978-04-12T20:01:39Z", "ms": 261259298752.51108 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-04-11", "window": { "start": { "local": "1978-04-11T10:56:33-03:00", "utc": "1978-04-11T13:56:33Z", "ms": 261150993260.59363 }, "end": { "local": "1978-04-11T11:44:33-03:00", "utc": "1978-04-11T14:44:33Z", "ms": 261153873260.59363 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-04-12", "window": { "start": { "local": "1978-04-12T10:56:18-03:00", "utc": "1978-04-12T13:56:18Z", "ms": 261237377566.10385 }, "end": { "local": "1978-04-12T11:44:18-03:00", "utc": "1978-04-12T14:44:18Z", "ms": 261240257566.10385 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 15:04 on Tue 11 Apr to 17:02 on Wed 12 Apr.", "fact": "1978-04-11T18:03:41Z → 1978-04-12T20:01:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:57–11:45 on the 11th, 10:56–11:44 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: purvaviddha → only-day · margin 11948 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Recife, 1978: Wednesday 12 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": "1978-04-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-12", "confidence": "determinate" } ], "quote": "In Recife, Lakṣmī Pañcamī 1978 falls on Wednesday 12 April. Pañcamī runs from 15:04 on Tue 11 Apr to 17:02 on Wed 12 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 42313, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "1978-04-13T17:36:48-03:00", "utc": "1978-04-13T20:36:48Z", "ms": 261347808165.14066 }, "end": { "local": "1978-05-14T14:31:14-03:00", "utc": "1978-05-14T17:31:14Z", "ms": 264015074108.0624 } }, "span": { "of": "transit", "start": { "local": "1978-04-13T17:36:48-03:00", "utc": "1978-04-13T20:36:48Z", "ms": 261347808165.14066 }, "end": { "local": "1978-04-13T17:36:48-03:00", "utc": "1978-04-13T20:36:48Z", "ms": 261347808165.14066 } }, "kaala": "day", "days": [ { "local_date": "1978-04-13", "window": { "start": { "local": "1978-04-13T05:22:04-03:00", "utc": "1978-04-13T08:22:04Z", "ms": 261303724269.55066 }, "end": { "local": "1978-04-14T05:22:01-03:00", "utc": "1978-04-14T08:22:01Z", "ms": 261390121487.76535 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1978-04-14", "window": { "start": { "local": "1978-04-14T05:22:01-03:00", "utc": "1978-04-14T08:22:01Z", "ms": 261390121487.76535 }, "end": { "local": "1978-04-15T05:21:59-03:00", "utc": "1978-04-15T08:21:59Z", "ms": 261476518951.7234 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 17:37 on Thu 13 Apr.", "fact": "1978-04-13T20:36:48Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:22 on the 13th, and from 05:22 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 42313 s" }, { "step": "ruling", "text": "Vaiśākhī, Recife, 1978: Thursday 13 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "vaishakhi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Mesadi — Cadaka puja (Bengal), Bahag Bihu (Assam), Cheiraoba (Manipur), Visu (T. C. State), Vaisakhi (on the samkramana day commencing from sunrise)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "not_evaluated": "The other names in the row (Cadaka puja, Bahag Bihu, Cheiraoba, Visu) are regional observances and wait with the regional rows.", "rashi": "Meṣa", "day_from": "sunrise" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1978-04-13", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "1978-04-14", "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 Recife, Vaiśākhī 1978 falls on Thursday 13 April. The Sun enters Meṣa at 17:37 on Thu 13 Apr, and the rule counts the day from sunrise. By the Tamil rule for the first day of a solar month, which gives a transit after sunset to the next day, it is 14 April.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36015, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1978-04-14T21:44:02-03:00", "utc": "1978-04-15T00:44:02Z", "ms": 261449041718.08057 }, "end": { "local": "1978-04-16T00:04:08-03:00", "utc": "1978-04-16T03:04:08Z", "ms": 261543847576.10995 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-14T21:44:02-03:00", "utc": "1978-04-15T00:44:02Z", "ms": 261449041718.08057 }, "end": { "local": "1978-04-16T00:04:08-03:00", "utc": "1978-04-16T03:04:08Z", "ms": 261543847576.10995 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-04-14", "window": { "start": { "local": "1978-04-14T10:55:47-03:00", "utc": "1978-04-14T13:55:47Z", "ms": 261410147065.9606 }, "end": { "local": "1978-04-14T11:43:47-03:00", "utc": "1978-04-14T14:43:47Z", "ms": 261413027065.9606 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-04-15", "window": { "start": { "local": "1978-04-15T10:55:32-03:00", "utc": "1978-04-15T13:55:32Z", "ms": 261496532289.9892 }, "end": { "local": "1978-04-15T11:43:32-03:00", "utc": "1978-04-15T14:43:32Z", "ms": 261499412289.9892 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 21:44 on Fri 14 Apr to 00:04 on Sun 16 Apr.", "fact": "1978-04-15T00:44:02Z → 1978-04-16T03:04:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:56–11:44 on the 14th, 10:56–11:44 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 36015 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Recife, 1978: Saturday 15 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": "1978-04-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-15", "confidence": "determinate" } ], "quote": "In Recife, Bhavānī Utpatti 1978 falls on Saturday 15 April. Aṣṭamī runs from 21:44 on Fri 14 Apr to 00:04 on Sun 16 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31755, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1978-04-16T00:04:08-03:00", "utc": "1978-04-16T03:04:08Z", "ms": 261543847576.10995 }, "end": { "local": "1978-04-17T02:05:49-03:00", "utc": "1978-04-17T05:05:49Z", "ms": 261637549242.33087 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-16T00:04:08-03:00", "utc": "1978-04-16T03:04:08Z", "ms": 261543847576.10995 }, "end": { "local": "1978-04-17T02:05:49-03:00", "utc": "1978-04-17T05:05:49Z", "ms": 261637549242.33087 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-04-16", "window": { "start": { "local": "1978-04-16T10:55:18-03:00", "utc": "1978-04-16T13:55:18Z", "ms": 261582917850.05804 }, "end": { "local": "1978-04-16T11:43:18-03:00", "utc": "1978-04-16T14:43:18Z", "ms": 261585797850.05804 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-04-17", "window": { "start": { "local": "1978-04-17T10:55:04-03:00", "utc": "1978-04-17T13:55:04Z", "ms": 261669303761.31668 }, "end": { "local": "1978-04-17T11:43:04-03:00", "utc": "1978-04-17T14:43:04Z", "ms": 261672183761.31668 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 00:04 on Sun 16 Apr to 02:06 on Mon 17 Apr.", "fact": "1978-04-16T03:04:08Z → 1978-04-17T05:05:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:55–11:43 on the 16th, 10:55–11:43 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31755 s" }, { "step": "ruling", "text": "Rāma Navamī, Recife, 1978: Sunday 16 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": "1978-04-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-16", "confidence": "determinate" } ], "quote": "In Recife, Rāma Navamī 1978 falls on Sunday 16 April. Navamī runs from 00:04 on Sun 16 Apr to 02:06 on Mon 17 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-04-18", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3046, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-04-18T03:37:34-03:00", "utc": "1978-04-18T06:37:34Z", "ms": 261729454457.66986 }, "end": { "local": "1978-04-19T04:31:06-03:00", "utc": "1978-04-19T07:31:06Z", "ms": 261819065533.03894 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-18T03:37:34-03:00", "utc": "1978-04-18T06:37:34Z", "ms": 261729454457.66986 }, "end": { "local": "1978-04-19T04:31:06-03:00", "utc": "1978-04-19T07:31:06Z", "ms": 261819065533.03894 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-04-18", "window": { "start": { "local": "1978-04-18T05:21:53-03:00", "utc": "1978-04-18T08:21:53Z", "ms": 261735712942.15967 }, "end": { "local": "1978-04-18T05:21:53-03:00", "utc": "1978-04-18T08:21:53Z", "ms": 261735712942.15967 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-04-19", "window": { "start": { "local": "1978-04-19T05:21:52-03:00", "utc": "1978-04-19T08:21:52Z", "ms": 261822111513.8526 }, "end": { "local": "1978-04-19T05:21:52-03:00", "utc": "1978-04-19T08:21:52Z", "ms": 261822111513.8526 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:38 on Tue 18 Apr to 04:31 on Wed 19 Apr.", "fact": "1978-04-18T06:37:34Z → 1978-04-19T07:31:06Z" }, { "step": "kaala", "text": "Sunrise is at 05:22 on the 18th and 05:22 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 3046 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Recife, 1978: Tuesday 18 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": "1978-04-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-18", "confidence": "determinate" } ], "quote": "In Recife, Kāmadā Ekādaśī 1978 falls on Tuesday 18 April. Ekādaśī runs from 03:38 on Tue 18 Apr to 04:31 on Wed 19 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-04-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22341, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-04-20T04:42:02-03:00", "utc": "1978-04-20T07:42:02Z", "ms": 261906122419.6894 }, "end": { "local": "1978-04-21T04:09:59-03:00", "utc": "1978-04-21T07:09:59Z", "ms": 261990599459.31888 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-20T04:42:02-03:00", "utc": "1978-04-20T07:42:02Z", "ms": 261906122419.6894 }, "end": { "local": "1978-04-21T04:09:59-03:00", "utc": "1978-04-21T07:09:59Z", "ms": 261990599459.31888 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-04-20", "window": { "start": { "local": "1978-04-20T10:54:24-03:00", "utc": "1978-04-20T13:54:24Z", "ms": 261928463756.62726 }, "end": { "local": "1978-04-20T11:42:24-03:00", "utc": "1978-04-20T14:42:24Z", "ms": 261931343756.62726 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-04-21", "window": { "start": { "local": "1978-04-21T10:54:11-03:00", "utc": "1978-04-21T13:54:11Z", "ms": 262014851228.43555 }, "end": { "local": "1978-04-21T11:42:11-03:00", "utc": "1978-04-21T14:42:11Z", "ms": 262017731228.43555 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:42 on Thu 20 Apr to 04:10 on Fri 21 Apr.", "fact": "1978-04-20T07:42:02Z → 1978-04-21T07:09:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:54–11:42 on the 20th, 10:54–11:42 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 20th and 0 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: purvaviddha → only-day · margin 22341 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Recife, 1978: Thursday 20 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": "1978-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-20", "confidence": "determinate" } ], "quote": "In Recife, Anaṅga Trayodaśī 1978 falls on Thursday 20 April. Trayodaśī runs from 04:42 on Thu 20 Apr to 04:10 on Fri 21 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/pradosha-vrata?on=1978-04-20", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33487, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-04-20T04:42:02-03:00", "utc": "1978-04-20T07:42:02Z", "ms": 261906122419.6894 }, "end": { "local": "1978-04-21T04:09:59-03:00", "utc": "1978-04-21T07:09:59Z", "ms": 261990599459.31888 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-20T04:42:02-03:00", "utc": "1978-04-20T07:42:02Z", "ms": 261906122419.6894 }, "end": { "local": "1978-04-21T04:09:59-03:00", "utc": "1978-04-21T07:09:59Z", "ms": 261990599459.31888 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-04-19", "window": { "start": { "local": "1978-04-19T17:15:22-03:00", "utc": "1978-04-19T20:15:22Z", "ms": 261864921883.95676 }, "end": { "local": "1978-04-19T18:52:14-03:00", "utc": "1978-04-19T21:52:14Z", "ms": 261870733685.3674 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "1978-04-20", "window": { "start": { "local": "1978-04-20T17:14:57-03:00", "utc": "1978-04-20T20:14:57Z", "ms": 261951297118.71793 }, "end": { "local": "1978-04-20T18:51:52-03:00", "utc": "1978-04-20T21:51:52Z", "ms": 261957112115.90317 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:42 on Thu 20 Apr to 04:10 on Fri 21 Apr.", "fact": "1978-04-20T07:42:02Z → 1978-04-21T07:09:59Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:15–18:52 on the 19th, 17:15–18:52 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 97 minutes on the 19th and 97 of 97 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 33487 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Recife, 1978: Thursday 20 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": "1978-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-20", "confidence": "determinate" } ], "quote": "In Recife, Śukla Pradoṣa Vrata 1978 falls on Thursday 20 April. Trayodaśī runs from 04:42 on Thu 20 Apr to 04:10 on Fri 21 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-04-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24252, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-04-21T04:09:59-03:00", "utc": "1978-04-21T07:09:59Z", "ms": 261990599459.31888 }, "end": { "local": "1978-04-22T02:57:50-03:00", "utc": "1978-04-22T05:57:50Z", "ms": 262072669999.65695 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-21T04:09:59-03:00", "utc": "1978-04-21T07:09:59Z", "ms": 261990599459.31888 }, "end": { "local": "1978-04-22T02:57:50-03:00", "utc": "1978-04-22T05:57:50Z", "ms": 262072669999.65695 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-04-21", "window": { "start": { "local": "1978-04-21T10:54:11-03:00", "utc": "1978-04-21T13:54:11Z", "ms": 262014851228.43555 }, "end": { "local": "1978-04-21T11:42:11-03:00", "utc": "1978-04-21T14:42:11Z", "ms": 262017731228.43555 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-04-22", "window": { "start": { "local": "1978-04-22T10:53:59-03:00", "utc": "1978-04-22T13:53:59Z", "ms": 262101239130.83087 }, "end": { "local": "1978-04-22T11:41:59-03:00", "utc": "1978-04-22T14:41:59Z", "ms": 262104119130.83087 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:10 on Fri 21 Apr to 02:58 on Sat 22 Apr.", "fact": "1978-04-21T07:09:59Z → 1978-04-22T05:57:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:54–11:42 on the 21st, 10:54–11:42 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24252 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Recife, 1978: Friday 21 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": "1978-04-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-21", "confidence": "determinate" } ], "quote": "In Recife, Viṣṇudamanaka Caturdaśī 1978 falls on Friday 21 April. Caturdaśī runs from 04:10 on Fri 21 Apr to 02:58 on Sat 22 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28569, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-04-22T02:57:50-03:00", "utc": "1978-04-22T05:57:50Z", "ms": 262072669999.65695 }, "end": { "local": "1978-04-23T01:10:57-03:00", "utc": "1978-04-23T04:10:57Z", "ms": 262152656629.43237 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1978-04-22T02:57:50-03:00", "utc": "1978-04-22T05:57:50Z", "ms": 262072669999.65695 }, "end": { "local": "1978-04-23T01:10:57-03:00", "utc": "1978-04-23T04:10:57Z", "ms": 262152656629.43237 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-04-22", "window": { "start": { "local": "1978-04-22T10:53:59-03:00", "utc": "1978-04-22T13:53:59Z", "ms": 262101239130.83087 }, "end": { "local": "1978-04-22T11:41:59-03:00", "utc": "1978-04-22T14:41:59Z", "ms": 262104119130.83087 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-04-23", "window": { "start": { "local": "1978-04-23T10:53:47-03:00", "utc": "1978-04-23T13:53:47Z", "ms": 262187627480.50482 }, "end": { "local": "1978-04-23T11:41:47-03:00", "utc": "1978-04-23T14:41:47Z", "ms": 262190507480.50482 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 02:58 on Sat 22 Apr to 01:11 on Sun 23 Apr.", "fact": "1978-04-22T05:57:50Z → 1978-04-23T04:10:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:54–11:42 on the 22nd, 10:54–11:42 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28569 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Recife, 1978: Saturday 22 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": "1978-04-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-22", "confidence": "determinate" } ], "quote": "In Recife, Caitrī Pūrṇimā 1978 falls on Saturday 22 April. Pūrṇimā runs from 02:58 on Sat 22 Apr to 01:11 on Sun 23 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/sankashta-chaturthi?on=1978-04-25", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-04-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7679, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-04-25T17:35:58-03:00", "utc": "1978-04-25T20:35:58Z", "ms": 262384558250.4269 }, "end": { "local": "1978-04-26T14:46:25-03:00", "utc": "1978-04-26T17:46:25Z", "ms": 262460784526.17896 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-04-25T17:35:58-03:00", "utc": "1978-04-25T20:35:58Z", "ms": 262384558250.4269 }, "end": { "local": "1978-04-26T14:46:25-03:00", "utc": "1978-04-26T17:46:25Z", "ms": 262460784526.17896 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-04-25", "window": { "start": { "local": "1978-04-25T19:43:57-03:00", "utc": "1978-04-25T22:43:57Z", "ms": 262392236914.6036 }, "end": { "local": "1978-04-25T19:43:57-03:00", "utc": "1978-04-25T22:43:57Z", "ms": 262392236914.6036 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-04-26", "window": { "start": { "local": "1978-04-26T20:42:53-03:00", "utc": "1978-04-26T23:42:53Z", "ms": 262482173258.09738 }, "end": { "local": "1978-04-26T20:42:53-03:00", "utc": "1978-04-26T23:42:53Z", "ms": 262482173258.09738 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:36 on Tue 25 Apr to 14:46 on Wed 26 Apr.", "fact": "1978-04-25T20:35:58Z → 1978-04-26T17:46:25Z" }, { "step": "kaala", "text": "Moonrise is at 19:44 on the 25th and 20:43 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 25th and is not on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7679 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Recife, 1978: Tuesday 25 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": "1978-04-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-04-25", "confidence": "determinate" } ], "quote": "In Recife, Saṅkaṣṭa Caturthī 1978 falls on Tuesday 25 April. Caturthī runs from 17:36 on Tue 25 Apr to 14:46 on Wed 26 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/sankashta-chaturthi?on=1978-04-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/ekadashi?on=1978-05-02", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11573, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-05-02T02:09:13-03:00", "utc": "1978-05-02T05:09:13Z", "ms": 262933753203.3101 }, "end": { "local": "1978-05-03T01:16:56-03:00", "utc": "1978-05-03T04:16:56Z", "ms": 263017016167.50717 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-02T02:09:13-03:00", "utc": "1978-05-02T05:09:13Z", "ms": 262933753203.3101 }, "end": { "local": "1978-05-03T01:16:56-03:00", "utc": "1978-05-03T04:16:56Z", "ms": 263017016167.50717 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-05-02", "window": { "start": { "local": "1978-05-02T05:22:06-03:00", "utc": "1978-05-02T08:22:06Z", "ms": 262945325785.02237 }, "end": { "local": "1978-05-02T05:22:06-03:00", "utc": "1978-05-02T08:22:06Z", "ms": 262945325785.02237 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-05-03", "window": { "start": { "local": "1978-05-03T05:22:10-03:00", "utc": "1978-05-03T08:22:10Z", "ms": 263031729767.0673 }, "end": { "local": "1978-05-03T05:22:10-03:00", "utc": "1978-05-03T08:22:10Z", "ms": 263031729767.0673 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:09 on Tue 2 May to 01:17 on Wed 3 May.", "fact": "1978-05-02T05:09:13Z → 1978-05-03T04:16:56Z" }, { "step": "kaala", "text": "Sunrise is at 05:22 on the 2nd and 05:22 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 11573 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Recife, 1978: Tuesday 2 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": "1978-05-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-02", "confidence": "determinate" } ], "quote": "In Recife, Varūthinī Ekādaśī 1978 falls on Tuesday 2 May. Ekādaśī runs from 02:09 on Tue 2 May to 01:17 on Wed 3 May and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-05-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-05-04", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21346, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-05-04T00:48:22-03:00", "utc": "1978-05-04T03:48:22Z", "ms": 263101701922.25687 }, "end": { "local": "1978-05-05T00:43:35-03:00", "utc": "1978-05-05T03:43:35Z", "ms": 263187814696.69888 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-04T00:48:22-03:00", "utc": "1978-05-04T03:48:22Z", "ms": 263101701922.25687 }, "end": { "local": "1978-05-05T00:43:35-03:00", "utc": "1978-05-05T03:43:35Z", "ms": 263187814696.69888 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-05-03", "window": { "start": { "local": "1978-05-03T17:10:28-03:00", "utc": "1978-05-03T20:10:28Z", "ms": 263074227780.68204 }, "end": { "local": "1978-05-03T18:48:02-03:00", "utc": "1978-05-03T21:48:02Z", "ms": 263080081967.85144 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "1978-05-04", "window": { "start": { "local": "1978-05-04T17:10:12-03:00", "utc": "1978-05-04T20:10:12Z", "ms": 263160611626.3416 }, "end": { "local": "1978-05-04T18:47:49-03:00", "utc": "1978-05-04T21:47:49Z", "ms": 263166468614.26965 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:48 on Thu 4 May to 00:44 on Fri 5 May.", "fact": "1978-05-04T03:48:22Z → 1978-05-05T03:43:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:10–18:48 on the 3rd, 17:10–18:48 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 98 minutes on the 3rd and 98 of 98 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 21346 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Recife, 1978: Thursday 4 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-04", "confidence": "determinate" } ], "quote": "In Recife, Kṛṣṇa Pradoṣa Vrata 1978 falls on Thursday 4 May. Trayodaśī runs from 00:48 on Thu 4 May to 00:44 on Fri 5 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-05-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shivaratri?on=1978-05-05", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3799, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-05-05T00:43:35-03:00", "utc": "1978-05-05T03:43:35Z", "ms": 263187814696.69888 }, "end": { "local": "1978-05-06T01:02:52-03:00", "utc": "1978-05-06T04:02:52Z", "ms": 263275371699.20697 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-05T00:43:35-03:00", "utc": "1978-05-05T03:43:35Z", "ms": 263187814696.69888 }, "end": { "local": "1978-05-06T01:02:52-03:00", "utc": "1978-05-06T04:02:52Z", "ms": 263275371699.20697 } }, "kaala": "nishita", "days": [ { "local_date": "1978-05-04", "window": { "start": { "local": "1978-05-04T22:52:15-03:00", "utc": "1978-05-05T01:52:15Z", "ms": 263181135331.07178 }, "end": { "local": "1978-05-04T23:40:15-03:00", "utc": "1978-05-05T02:40:15Z", "ms": 263184015331.07178 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-05-05", "window": { "start": { "local": "1978-05-05T22:52:10-03:00", "utc": "1978-05-06T01:52:10Z", "ms": 263267530244.7549 }, "end": { "local": "1978-05-05T23:40:10-03:00", "utc": "1978-05-06T02:40:10Z", "ms": 263270410244.7549 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 00:44 on Fri 5 May to 01:03 on Sat 6 May.", "fact": "1978-05-05T03:43:35Z → 1978-05-06T04:02:52Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:52–23:40 on the 4th, 22:52–23:40 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 3799 s" }, { "step": "ruling", "text": "Śivarātri, Recife, 1978: Friday 5 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": "1978-05-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-05", "confidence": "determinate" } ], "quote": "In Recife, Śivarātri 1978 falls on Friday 5 May. Caturdaśī runs from 00:44 on Fri 5 May to 01:03 on Sat 6 May and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/shivaratri?on=1978-05-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34896, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1978-05-09T04:28:38-03:00", "utc": "1978-05-09T07:28:38Z", "ms": 263546918130.6993 }, "end": { "local": "1978-05-10T06:24:21-03:00", "utc": "1978-05-10T09:24:21Z", "ms": 263640260698.20184 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-09T04:28:38-03:00", "utc": "1978-05-09T07:28:38Z", "ms": 263546918130.6993 }, "end": { "local": "1978-05-10T06:24:21-03:00", "utc": "1978-05-10T09:24:21Z", "ms": 263640260698.20184 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-05-08", "window": { "start": { "local": "1978-05-08T17:09:14-03:00", "utc": "1978-05-08T20:09:14Z", "ms": 263506154038.5055 }, "end": { "local": "1978-05-08T18:47:02-03:00", "utc": "1978-05-08T21:47:02Z", "ms": 263512021862.5531 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "1978-05-09", "window": { "start": { "local": "1978-05-09T17:09:01-03:00", "utc": "1978-05-09T20:09:01Z", "ms": 263592541416.41562 }, "end": { "local": "1978-05-09T18:46:52-03:00", "utc": "1978-05-09T21:46:52Z", "ms": 263598411852.53262 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 04:29 on Tue 9 May to 06:24 on Wed 10 May.", "fact": "1978-05-09T07:28:38Z → 1978-05-10T09:24:21Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:09–18:47 on the 8th, 17:09–18:47 on the 9th.", "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 98 minutes on the 8th and 98 of 98 on the 9th.", "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 34896 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Recife, 1978: Tuesday 9 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": "1978-05-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-09", "confidence": "determinate" } ], "quote": "In Recife, Paraśurāma Jayantī 1978 falls on Tuesday 9 May. Tṛtīyā runs from 04:29 on Tue 9 May to 06:24 on Wed 10 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3245, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1978-05-09T04:28:38-03:00", "utc": "1978-05-09T07:28:38Z", "ms": 263546918130.6993 }, "end": { "local": "1978-05-10T06:24:21-03:00", "utc": "1978-05-10T09:24:21Z", "ms": 263640260698.20184 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-09T04:28:38-03:00", "utc": "1978-05-09T07:28:38Z", "ms": 263546918130.6993 }, "end": { "local": "1978-05-10T06:24:21-03:00", "utc": "1978-05-10T09:24:21Z", "ms": 263640260698.20184 } }, "kaala": "purvahna", "days": [ { "local_date": "1978-05-09", "window": { "start": { "local": "1978-05-09T05:22:43-03:00", "utc": "1978-05-09T08:22:43Z", "ms": 263550162718.86252 }, "end": { "local": "1978-05-09T09:18:09-03:00", "utc": "1978-05-09T12:18:09Z", "ms": 263564288951.38022 } }, "covered_min": 235, "window_min": 235, "qualifies": true }, { "local_date": "1978-05-10", "window": { "start": { "local": "1978-05-10T05:22:50-03:00", "utc": "1978-05-10T08:22:50Z", "ms": 263636569687.29315 }, "end": { "local": "1978-05-10T09:18:10-03:00", "utc": "1978-05-10T12:18:10Z", "ms": 263650689628.06735 } }, "covered_min": 62, "window_min": 235, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 04:29 on Tue 9 May to 06:24 on Wed 10 May.", "fact": "1978-05-09T07:28:38Z → 1978-05-10T09:24:21Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:23–09:18 on the 9th, 05:23–09:18 on the 10th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pūrvāhṇa. It covers 235 of 235 minutes on the 9th and 62 of 235 on the 10th.", "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 3245 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Recife, 1978: Wednesday 10 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": "1978-05-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-10", "confidence": "determinate" } ], "quote": "In Recife, Akṣaya Tṛtīyā 1978 falls on Wednesday 10 May. Tṛtīyā runs from 04:29 on Tue 9 May to 06:24 on Wed 10 May and covers 62 of 235 minutes of pūrvāhṇa that forenoon. It also reaches the previous forenoon for 235 minutes; by the rule the second forenoon is taken.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/vinayaka-chaturthi?on=1978-05-10", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8017, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-05-10T06:24:21-03:00", "utc": "1978-05-10T09:24:21Z", "ms": 263640260698.20184 }, "end": { "local": "1978-05-11T08:38:10-03:00", "utc": "1978-05-11T11:38:10Z", "ms": 263734690299.98676 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-10T06:24:21-03:00", "utc": "1978-05-10T09:24:21Z", "ms": 263640260698.20184 }, "end": { "local": "1978-05-11T08:38:10-03:00", "utc": "1978-05-11T11:38:10Z", "ms": 263734690299.98676 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-05-10", "window": { "start": { "local": "1978-05-10T10:51:50-03:00", "utc": "1978-05-10T13:51:50Z", "ms": 263656309598.45444 }, "end": { "local": "1978-05-10T11:39:50-03:00", "utc": "1978-05-10T14:39:50Z", "ms": 263659189598.45444 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-05-11", "window": { "start": { "local": "1978-05-11T10:51:48-03:00", "utc": "1978-05-11T13:51:48Z", "ms": 263742707692.24493 }, "end": { "local": "1978-05-11T11:39:48-03:00", "utc": "1978-05-11T14:39:48Z", "ms": 263745587692.24493 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:24 on Wed 10 May to 08:38 on Thu 11 May.", "fact": "1978-05-10T09:24:21Z → 1978-05-11T11:38:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:52–11:40 on the 10th, 10:52–11:40 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8017 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Recife, 1978: Wednesday 10 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": "1978-05-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-10", "confidence": "determinate" } ], "quote": "In Recife, Vināyaka Caturthī 1978 falls on Wednesday 10 May. Caturthī runs from 06:24 on Wed 10 May to 08:38 on Thu 11 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/vinayaka-chaturthi?on=1978-05-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-11", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 661, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1978-05-11T08:38:10-03:00", "utc": "1978-05-11T11:38:10Z", "ms": 263734690299.98676 }, "end": { "local": "1978-05-12T11:02:47-03:00", "utc": "1978-05-12T14:02:47Z", "ms": 263829766938.5325 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-11T08:38:10-03:00", "utc": "1978-05-11T11:38:10Z", "ms": 263734690299.98676 }, "end": { "local": "1978-05-12T11:02:47-03:00", "utc": "1978-05-12T14:02:47Z", "ms": 263829766938.5325 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-05-11", "window": { "start": { "local": "1978-05-11T10:51:48-03:00", "utc": "1978-05-11T13:51:48Z", "ms": 263742707692.24493 }, "end": { "local": "1978-05-11T11:39:48-03:00", "utc": "1978-05-11T14:39:48Z", "ms": 263745587692.24493 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-05-12", "window": { "start": { "local": "1978-05-12T10:51:46-03:00", "utc": "1978-05-12T13:51:46Z", "ms": 263829106346.93646 }, "end": { "local": "1978-05-12T11:39:46-03:00", "utc": "1978-05-12T14:39:46Z", "ms": 263831986346.93646 } }, "covered_min": 11, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 08:38 on Thu 11 May to 11:03 on Fri 12 May.", "fact": "1978-05-11T11:38:10Z → 1978-05-12T14:02:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:52–11:40 on the 11th, 10:52–11:40 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 11 of 48 on the 12th.", "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 661 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Recife, 1978: Thursday 11 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": "1978-05-11", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-11", "confidence": "boundary" } ], "quote": "In Recife, Śaṅkara Jayantī 1978 falls on Thursday 11 May. Pañcamī runs from 08:38 on Thu 11 May to 11:03 on Fri 12 May and covers all of madhyāhna that midday. It also reaches the next midday for 11 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/recife/festivals/1978/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": "/recife/festivals/1978/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6490, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1978-05-13T13:27:55-03:00", "utc": "1978-05-13T16:27:55Z", "ms": 263924875408.51767 }, "end": { "local": "1978-05-14T15:41:15-03:00", "utc": "1978-05-14T18:41:15Z", "ms": 264019275440.61652 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-13T13:27:55-03:00", "utc": "1978-05-13T16:27:55Z", "ms": 263924875408.51767 }, "end": { "local": "1978-05-14T15:41:15-03:00", "utc": "1978-05-14T18:41:15Z", "ms": 264019275440.61652 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-05-13", "window": { "start": { "local": "1978-05-13T10:51:46-03:00", "utc": "1978-05-13T13:51:46Z", "ms": 263915505560.13263 }, "end": { "local": "1978-05-13T11:39:46-03:00", "utc": "1978-05-13T14:39:46Z", "ms": 263918385560.13263 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-05-14", "window": { "start": { "local": "1978-05-14T10:51:45-03:00", "utc": "1978-05-14T13:51:45Z", "ms": 264001905329.12125 }, "end": { "local": "1978-05-14T11:39:45-03:00", "utc": "1978-05-14T14:39:45Z", "ms": 264004785329.12125 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 13:28 on Sat 13 May to 15:41 on Sun 14 May.", "fact": "1978-05-13T16:27:55Z → 1978-05-14T18:41:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:52–11:40 on the 13th, 10:52–11:40 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 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 6490 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Recife, 1978: Sunday 14 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": "1978-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-14", "confidence": "determinate" } ], "quote": "In Recife, Gaṅgotpatti (Ganga Saptami) 1978 falls on Sunday 14 May. Saptamī runs from 13:28 on Sat 13 May to 15:41 on Sun 14 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-05-18", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36789, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-05-17T19:10:50-03:00", "utc": "1978-05-17T22:10:50Z", "ms": 264291050208.37555 }, "end": { "local": "1978-05-18T18:50:34-03:00", "utc": "1978-05-18T21:50:34Z", "ms": 264376233970.2329 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-17T19:10:50-03:00", "utc": "1978-05-17T22:10:50Z", "ms": 264291050208.37555 }, "end": { "local": "1978-05-18T18:50:34-03:00", "utc": "1978-05-18T21:50:34Z", "ms": 264376233970.2329 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-05-18", "window": { "start": { "local": "1978-05-18T05:24:00-03:00", "utc": "1978-05-18T08:24:00Z", "ms": 264327839608.15747 }, "end": { "local": "1978-05-18T05:24:00-03:00", "utc": "1978-05-18T08:24:00Z", "ms": 264327839608.15747 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-05-19", "window": { "start": { "local": "1978-05-19T05:24:10-03:00", "utc": "1978-05-19T08:24:10Z", "ms": 264414250016.84613 }, "end": { "local": "1978-05-19T05:24:10-03:00", "utc": "1978-05-19T08:24:10Z", "ms": 264414250016.84613 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:11 on Wed 17 May to 18:51 on Thu 18 May.", "fact": "1978-05-17T22:10:50Z → 1978-05-18T21:50:34Z" }, { "step": "kaala", "text": "Sunrise is at 05:24 on the 18th and 05:24 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 36789 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Recife, 1978: Thursday 18 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": "1978-05-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-18", "confidence": "determinate" } ], "quote": "In Recife, Mohinī Ekādaśī 1978 falls on Thursday 18 May. Ekādaśī runs from 19:11 on Wed 17 May to 18:51 on Thu 18 May and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-05-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21718, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1978-05-18T18:50:34-03:00", "utc": "1978-05-18T21:50:34Z", "ms": 264376233970.2329 }, "end": { "local": "1978-05-19T17:41:50-03:00", "utc": "1978-05-19T20:41:50Z", "ms": 264458509901.05048 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-18T18:50:34-03:00", "utc": "1978-05-18T21:50:34Z", "ms": 264376233970.2329 }, "end": { "local": "1978-05-19T17:41:50-03:00", "utc": "1978-05-19T20:41:50Z", "ms": 264458509901.05048 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-05-18", "window": { "start": { "local": "1978-05-18T10:51:50-03:00", "utc": "1978-05-18T13:51:50Z", "ms": 264347509899.67072 }, "end": { "local": "1978-05-18T11:39:50-03:00", "utc": "1978-05-18T14:39:50Z", "ms": 264350389899.67072 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-05-19", "window": { "start": { "local": "1978-05-19T10:51:52-03:00", "utc": "1978-05-19T13:51:52Z", "ms": 264433912398.9834 }, "end": { "local": "1978-05-19T11:39:52-03:00", "utc": "1978-05-19T14:39:52Z", "ms": 264436792398.9834 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 18:51 on Thu 18 May to 17:42 on Fri 19 May.", "fact": "1978-05-18T21:50:34Z → 1978-05-19T20:41:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:52–11:40 on the 18th, 10:52–11:40 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 21718 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Recife, 1978: Friday 19 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": "1978-05-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-19", "confidence": "determinate" } ], "quote": "In Recife, Paraśurāma Dvādaśī 1978 falls on Friday 19 May. Dvādaśī runs from 18:51 on Thu 18 May to 17:42 on Fri 19 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21718, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1978-05-18T18:50:34-03:00", "utc": "1978-05-18T21:50:34Z", "ms": 264376233970.2329 }, "end": { "local": "1978-05-19T17:41:50-03:00", "utc": "1978-05-19T20:41:50Z", "ms": 264458509901.05048 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-18T18:50:34-03:00", "utc": "1978-05-18T21:50:34Z", "ms": 264376233970.2329 }, "end": { "local": "1978-05-19T17:41:50-03:00", "utc": "1978-05-19T20:41:50Z", "ms": 264458509901.05048 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-05-18", "window": { "start": { "local": "1978-05-18T10:51:50-03:00", "utc": "1978-05-18T13:51:50Z", "ms": 264347509899.67072 }, "end": { "local": "1978-05-18T11:39:50-03:00", "utc": "1978-05-18T14:39:50Z", "ms": 264350389899.67072 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-05-19", "window": { "start": { "local": "1978-05-19T10:51:52-03:00", "utc": "1978-05-19T13:51:52Z", "ms": 264433912398.9834 }, "end": { "local": "1978-05-19T11:39:52-03:00", "utc": "1978-05-19T14:39:52Z", "ms": 264436792398.9834 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 18:51 on Thu 18 May to 17:42 on Fri 19 May.", "fact": "1978-05-18T21:50:34Z → 1978-05-19T20:41:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:52–11:40 on the 18th, 10:52–11:40 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 21718 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Recife, 1978: Friday 19 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": "1978-05-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-19", "confidence": "determinate" } ], "quote": "In Recife, Rukmiṇī Dvādaśī 1978 falls on Friday 19 May. Dvādaśī runs from 18:51 on Thu 18 May to 17:42 on Fri 19 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/pradosha-vrata?on=1978-05-19", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2055, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-05-19T17:41:50-03:00", "utc": "1978-05-19T20:41:50Z", "ms": 264458509901.05048 }, "end": { "local": "1978-05-20T15:48:28-03:00", "utc": "1978-05-20T18:48:28Z", "ms": 264538107579.89896 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-19T17:41:50-03:00", "utc": "1978-05-19T20:41:50Z", "ms": 264458509901.05048 }, "end": { "local": "1978-05-20T15:48:28-03:00", "utc": "1978-05-20T18:48:28Z", "ms": 264538107579.89896 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-05-19", "window": { "start": { "local": "1978-05-19T17:07:35-03:00", "utc": "1978-05-19T20:07:35Z", "ms": 264456454781.12067 }, "end": { "local": "1978-05-19T18:45:49-03:00", "utc": "1978-05-19T21:45:49Z", "ms": 264462348913.30902 } }, "covered_min": 64, "window_min": 98, "qualifies": true }, { "local_date": "1978-05-20", "window": { "start": { "local": "1978-05-20T17:07:30-03:00", "utc": "1978-05-20T20:07:30Z", "ms": 264542850096.13834 }, "end": { "local": "1978-05-20T18:45:46-03:00", "utc": "1978-05-20T21:45:46Z", "ms": 264548746332.4504 } }, "covered_min": 0, "window_min": 98, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:42 on Fri 19 May to 15:48 on Sat 20 May.", "fact": "1978-05-19T20:41:50Z → 1978-05-20T18:48:28Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:08–18:46 on the 19th, 17:08–18:46 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 64 of 98 minutes on the 19th and 0 of 98 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 2055 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Recife, 1978: Friday 19 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": "1978-05-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-19", "confidence": "determinate" } ], "quote": "In Recife, Śukla Pradoṣa Vrata 1978 falls on Friday 19 May. Trayodaśī runs from 17:42 on Fri 19 May to 15:48 on Sat 20 May and covers 64 of 98 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-05-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4743, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-05-20T15:48:28-03:00", "utc": "1978-05-20T18:48:28Z", "ms": 264538107579.89896 }, "end": { "local": "1978-05-21T13:17:10-03:00", "utc": "1978-05-21T16:17:10Z", "ms": 264615430473.84888 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-20T15:48:28-03:00", "utc": "1978-05-20T18:48:28Z", "ms": 264538107579.89896 }, "end": { "local": "1978-05-21T13:17:10-03:00", "utc": "1978-05-21T16:17:10Z", "ms": 264615430473.84888 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-05-20", "window": { "start": { "local": "1978-05-20T17:07:30-03:00", "utc": "1978-05-20T20:07:30Z", "ms": 264542850096.13834 }, "end": { "local": "1978-05-20T18:45:46-03:00", "utc": "1978-05-20T21:45:46Z", "ms": 264548746332.4504 } }, "covered_min": 98, "window_min": 98, "qualifies": true }, { "local_date": "1978-05-21", "window": { "start": { "local": "1978-05-21T17:07:26-03:00", "utc": "1978-05-21T20:07:26Z", "ms": 264629246136.9094 }, "end": { "local": "1978-05-21T18:45:44-03:00", "utc": "1978-05-21T21:45:44Z", "ms": 264635144425.0693 } }, "covered_min": 0, "window_min": 98, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 15:48 on Sat 20 May to 13:17 on Sun 21 May.", "fact": "1978-05-20T18:48:28Z → 1978-05-21T16:17:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:08–18:46 on the 20th, 17:07–18:46 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 98 of 98 minutes on the 20th and 0 of 98 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: paraviddha → only-day · margin 4743 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Recife, 1978: Saturday 20 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": "1978-05-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-20", "confidence": "determinate" } ], "quote": "In Recife, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 1978 falls on Saturday 20 May. Caturdaśī runs from 15:48 on Sat 20 May to 13:17 on Sun 21 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2122, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-05-21T13:17:10-03:00", "utc": "1978-05-21T16:17:10Z", "ms": 264615430473.84888 }, "end": { "local": "1978-05-22T10:16:41-03:00", "utc": "1978-05-22T13:16:41Z", "ms": 264691000890.1144 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-21T13:17:10-03:00", "utc": "1978-05-21T16:17:10Z", "ms": 264615430473.84888 }, "end": { "local": "1978-05-22T10:16:41-03:00", "utc": "1978-05-22T13:16:41Z", "ms": 264691000890.1144 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-05-21", "window": { "start": { "local": "1978-05-21T10:51:59-03:00", "utc": "1978-05-21T13:51:59Z", "ms": 264606719002.69412 }, "end": { "local": "1978-05-21T11:39:59-03:00", "utc": "1978-05-21T14:39:59Z", "ms": 264609599002.69412 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-05-22", "window": { "start": { "local": "1978-05-22T10:52:03-03:00", "utc": "1978-05-22T13:52:03Z", "ms": 264693123101.07935 }, "end": { "local": "1978-05-22T11:40:03-03:00", "utc": "1978-05-22T14:40:03Z", "ms": 264696003101.07935 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 13:17 on Sun 21 May to 10:17 on Mon 22 May.", "fact": "1978-05-21T16:17:10Z → 1978-05-22T13:16:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:52–11:40 on the 21st, 10:52–11:40 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "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: unstated → second-day · margin 2122 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Recife, 1978: Monday 22 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": "1978-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-22", "confidence": "determinate" } ], "quote": "In Recife, Buddha Pūrṇimā 1978 falls on Monday 22 May. Pūrṇimā runs from 13:17 on Sun 21 May to 10:17 on Mon 22 May, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2122, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-05-21T13:17:10-03:00", "utc": "1978-05-21T16:17:10Z", "ms": 264615430473.84888 }, "end": { "local": "1978-05-22T10:16:41-03:00", "utc": "1978-05-22T13:16:41Z", "ms": 264691000890.1144 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-21T13:17:10-03:00", "utc": "1978-05-21T16:17:10Z", "ms": 264615430473.84888 }, "end": { "local": "1978-05-22T10:16:41-03:00", "utc": "1978-05-22T13:16:41Z", "ms": 264691000890.1144 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-05-21", "window": { "start": { "local": "1978-05-21T10:51:59-03:00", "utc": "1978-05-21T13:51:59Z", "ms": 264606719002.69412 }, "end": { "local": "1978-05-21T11:39:59-03:00", "utc": "1978-05-21T14:39:59Z", "ms": 264609599002.69412 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-05-22", "window": { "start": { "local": "1978-05-22T10:52:03-03:00", "utc": "1978-05-22T13:52:03Z", "ms": 264693123101.07935 }, "end": { "local": "1978-05-22T11:40:03-03:00", "utc": "1978-05-22T14:40:03Z", "ms": 264696003101.07935 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 13:17 on Sun 21 May to 10:17 on Mon 22 May.", "fact": "1978-05-21T16:17:10Z → 1978-05-22T13:16:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:52–11:40 on the 21st, 10:52–11:40 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: paraviddha → second-day · margin 2122 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Recife, 1978: Monday 22 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": "1978-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-22", "confidence": "determinate" } ], "quote": "In Recife, Sampat Gaurī Vrata 1978 falls on Monday 22 May. Pūrṇimā runs from 13:17 on Sun 21 May to 10:17 on Mon 22 May, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/sankashta-chaturthi?on=1978-05-25", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-05-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 706, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-05-25T00:00:24-03:00", "utc": "1978-05-25T03:00:24Z", "ms": 264913224028.64883 }, "end": { "local": "1978-05-25T20:43:42-03:00", "utc": "1978-05-25T23:43:42Z", "ms": 264987822463.2331 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-25T00:00:24-03:00", "utc": "1978-05-25T03:00:24Z", "ms": 264913224028.64883 }, "end": { "local": "1978-05-25T20:43:42-03:00", "utc": "1978-05-25T23:43:42Z", "ms": 264987822463.2331 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-05-24", "window": { "start": { "local": "1978-05-24T19:30:39-03:00", "utc": "1978-05-24T22:30:39Z", "ms": 264897039308.99417 }, "end": { "local": "1978-05-24T19:30:39-03:00", "utc": "1978-05-24T22:30:39Z", "ms": 264897039308.99417 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-05-25", "window": { "start": { "local": "1978-05-25T20:31:57-03:00", "utc": "1978-05-25T23:31:57Z", "ms": 264987116591.85498 }, "end": { "local": "1978-05-25T20:31:57-03:00", "utc": "1978-05-25T23:31:57Z", "ms": 264987116591.85498 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:00 on Thu 25 May to 20:44 on Thu 25 May.", "fact": "1978-05-25T03:00:24Z → 1978-05-25T23:43:42Z" }, { "step": "kaala", "text": "Moonrise is at 19:31 on the 24th and 20:32 on the 25th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 24th and is on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 706 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Recife, 1978: Thursday 25 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": "1978-05-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-05-25", "confidence": "determinate" } ], "quote": "In Recife, Saṅkaṣṭa Caturthī 1978 falls on Thursday 25 May. Caturthī runs from 00:00 on Thu 25 May to 20:44 on Thu 25 May and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/sankashta-chaturthi?on=1978-05-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/ekadashi?on=1978-06-01", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-06-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19212, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-05-31T10:46:52-03:00", "utc": "1978-05-31T13:46:52Z", "ms": 265470411663.559 }, "end": { "local": "1978-06-01T11:01:35-03:00", "utc": "1978-06-01T14:01:35Z", "ms": 265557695497.65396 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1978-05-31T10:46:52-03:00", "utc": "1978-05-31T13:46:52Z", "ms": 265470411663.559 }, "end": { "local": "1978-06-01T11:01:35-03:00", "utc": "1978-06-01T14:01:35Z", "ms": 265557695497.65396 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-05-31", "window": { "start": { "local": "1978-05-31T05:26:40-03:00", "utc": "1978-05-31T08:26:40Z", "ms": 265451199721.4209 }, "end": { "local": "1978-05-31T05:26:40-03:00", "utc": "1978-05-31T08:26:40Z", "ms": 265451199721.4209 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-06-01", "window": { "start": { "local": "1978-06-01T05:26:54-03:00", "utc": "1978-06-01T08:26:54Z", "ms": 265537613917.14172 }, "end": { "local": "1978-06-01T05:26:54-03:00", "utc": "1978-06-01T08:26:54Z", "ms": 265537613917.14172 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:47 on Wed 31 May to 11:02 on Thu 1 Jun.", "fact": "1978-05-31T13:46:52Z → 1978-06-01T14:01:35Z" }, { "step": "kaala", "text": "Sunrise is at 05:27 on the 31st and 05:27 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 19212 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Recife, 1978: Thursday 1 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": "1978-06-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-06-01", "confidence": "determinate" } ], "quote": "In Recife, Aparā Ekādaśī 1978 falls on Thursday 1 June. Ekādaśī runs from 10:47 on Wed 31 May to 11:02 on Thu 1 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-06-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-06-02", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-06-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15501, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-06-02T11:43:32-03:00", "utc": "1978-06-02T14:43:32Z", "ms": 265646612090.83835 }, "end": { "local": "1978-06-03T12:49:18-03:00", "utc": "1978-06-03T15:49:18Z", "ms": 265736958383.36862 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1978-06-02T11:43:32-03:00", "utc": "1978-06-02T14:43:32Z", "ms": 265646612090.83835 }, "end": { "local": "1978-06-03T12:49:18-03:00", "utc": "1978-06-03T15:49:18Z", "ms": 265736958383.36862 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-06-02", "window": { "start": { "local": "1978-06-02T17:07:34-03:00", "utc": "1978-06-02T20:07:34Z", "ms": 265666054397.2948 }, "end": { "local": "1978-06-02T18:46:13-03:00", "utc": "1978-06-02T21:46:13Z", "ms": 265671972855.9279 } }, "covered_min": 99, "window_min": 99, "qualifies": true }, { "local_date": "1978-06-03", "window": { "start": { "local": "1978-06-03T17:07:39-03:00", "utc": "1978-06-03T20:07:39Z", "ms": 265752459483.36667 }, "end": { "local": "1978-06-03T18:46:19-03:00", "utc": "1978-06-03T21:46:19Z", "ms": 265758379220.96768 } }, "covered_min": 0, "window_min": 99, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:44 on Fri 2 Jun to 12:49 on Sat 3 Jun.", "fact": "1978-06-02T14:43:32Z → 1978-06-03T15:49:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:08–18:46 on the 2nd, 17:08–18:46 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 99 of 99 minutes on the 2nd and 0 of 99 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 15501 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Recife, 1978: Friday 2 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": "1978-06-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-06-02", "confidence": "determinate" } ], "quote": "In Recife, Kṛṣṇa Pradoṣa Vrata 1978 falls on Friday 2 June. Trayodaśī runs from 11:44 on Fri 2 Jun to 12:49 on Sat 3 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-06-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shivaratri?on=1978-06-03", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-06-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31066, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-06-03T12:49:18-03:00", "utc": "1978-06-03T15:49:18Z", "ms": 265736958383.36862 }, "end": { "local": "1978-06-04T14:16:03-03:00", "utc": "1978-06-04T17:16:03Z", "ms": 265828563078.38254 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1978-06-03T12:49:18-03:00", "utc": "1978-06-03T15:49:18Z", "ms": 265736958383.36862 }, "end": { "local": "1978-06-04T14:16:03-03:00", "utc": "1978-06-04T17:16:03Z", "ms": 265828563078.38254 } }, "kaala": "nishita", "days": [ { "local_date": "1978-06-03", "window": { "start": { "local": "1978-06-03T22:53:38-03:00", "utc": "1978-06-04T01:53:38Z", "ms": 265773218499.37048 }, "end": { "local": "1978-06-03T23:41:38-03:00", "utc": "1978-06-04T02:41:38Z", "ms": 265776098499.37048 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-06-04", "window": { "start": { "local": "1978-06-04T22:53:49-03:00", "utc": "1978-06-05T01:53:49Z", "ms": 265859628742.71948 }, "end": { "local": "1978-06-04T23:41:49-03:00", "utc": "1978-06-05T02:41:49Z", "ms": 265862508742.71948 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:49 on Sat 3 Jun to 14:16 on Sun 4 Jun.", "fact": "1978-06-03T15:49:18Z → 1978-06-04T17:16:03Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:54–23:42 on the 3rd, 22:54–23:42 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 31066 s" }, { "step": "ruling", "text": "Śivarātri, Recife, 1978: Saturday 3 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": "1978-06-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-06-03", "confidence": "determinate" } ], "quote": "In Recife, Śivarātri 1978 falls on Saturday 3 June. Caturdaśī runs from 12:49 on Sat 3 Jun to 14:16 on Sun 4 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/shivaratri?on=1978-06-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-06-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30993, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1978-06-07T20:18:47-03:00", "utc": "1978-06-07T23:18:47Z", "ms": 266109526576.4264 }, "end": { "local": "1978-06-08T22:43:30-03:00", "utc": "1978-06-09T01:43:30Z", "ms": 266204609872.74408 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1978-06-07T20:18:47-03:00", "utc": "1978-06-07T23:18:47Z", "ms": 266109526576.4264 }, "end": { "local": "1978-06-08T22:43:30-03:00", "utc": "1978-06-09T01:43:30Z", "ms": 266204609872.74408 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-06-07", "window": { "start": { "local": "1978-06-07T10:54:14-03:00", "utc": "1978-06-07T13:54:14Z", "ms": 266075653925.90918 }, "end": { "local": "1978-06-07T11:42:14-03:00", "utc": "1978-06-07T14:42:14Z", "ms": 266078533925.90918 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-06-08", "window": { "start": { "local": "1978-06-08T10:54:25-03:00", "utc": "1978-06-08T13:54:25Z", "ms": 266162065382.17285 }, "end": { "local": "1978-06-08T11:42:25-03:00", "utc": "1978-06-08T14:42:25Z", "ms": 266164945382.17285 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 20:19 on Wed 7 Jun to 22:43 on Thu 8 Jun.", "fact": "1978-06-07T23:18:47Z → 1978-06-09T01:43:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:54–11:42 on the 7th, 10:54–11:42 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30993 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Recife, 1978: Thursday 8 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": "1978-06-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-06-08", "confidence": "determinate" } ], "quote": "In Recife, Rambhā Tṛtīyā 1978 falls on Thursday 8 June. Tṛtīyā runs from 20:19 on Wed 7 Jun to 22:43 on Thu 8 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/vinayaka-chaturthi?on=1978-06-09", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-06-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35035, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-06-08T22:43:30-03:00", "utc": "1978-06-09T01:43:30Z", "ms": 266204609872.74408 }, "end": { "local": "1978-06-10T01:10:54-03:00", "utc": "1978-06-10T04:10:54Z", "ms": 266299853940.50735 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1978-06-08T22:43:30-03:00", "utc": "1978-06-09T01:43:30Z", "ms": 266204609872.74408 }, "end": { "local": "1978-06-10T01:10:54-03:00", "utc": "1978-06-10T04:10:54Z", "ms": 266299853940.50735 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-06-09", "window": { "start": { "local": "1978-06-09T10:54:37-03:00", "utc": "1978-06-09T13:54:37Z", "ms": 266248477097.67615 }, "end": { "local": "1978-06-09T11:42:37-03:00", "utc": "1978-06-09T14:42:37Z", "ms": 266251357097.67615 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-06-10", "window": { "start": { "local": "1978-06-10T10:54:49-03:00", "utc": "1978-06-10T13:54:49Z", "ms": 266334889048.67957 }, "end": { "local": "1978-06-10T11:42:49-03:00", "utc": "1978-06-10T14:42:49Z", "ms": 266337769048.67957 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:43 on Thu 8 Jun to 01:11 on Sat 10 Jun.", "fact": "1978-06-09T01:43:30Z → 1978-06-10T04:10:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:55–11:43 on the 9th, 10:55–11:43 on the 10th.", "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 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35035 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Recife, 1978: Friday 9 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": "1978-06-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-06-09", "confidence": "determinate" } ], "quote": "In Recife, Vināyaka Caturthī 1978 falls on Friday 9 June. Caturthī runs from 22:43 on Thu 8 Jun to 01:11 on Sat 10 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/vinayaka-chaturthi?on=1978-06-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-06-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19168, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1978-06-11T03:31:58-03:00", "utc": "1978-06-11T06:31:58Z", "ms": 266394717884.96243 }, "end": { "local": "1978-06-12T05:35:45-03:00", "utc": "1978-06-12T08:35:45Z", "ms": 266488545437.56735 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1978-06-11T03:31:58-03:00", "utc": "1978-06-11T06:31:58Z", "ms": 266394717884.96243 }, "end": { "local": "1978-06-12T05:35:45-03:00", "utc": "1978-06-12T08:35:45Z", "ms": 266488545437.56735 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-06-11", "window": { "start": { "local": "1978-06-11T10:55:01-03:00", "utc": "1978-06-11T13:55:01Z", "ms": 266421301211.36392 }, "end": { "local": "1978-06-11T11:43:01-03:00", "utc": "1978-06-11T14:43:01Z", "ms": 266424181211.36392 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-06-12", "window": { "start": { "local": "1978-06-12T10:55:14-03:00", "utc": "1978-06-12T13:55:14Z", "ms": 266507713561.91565 }, "end": { "local": "1978-06-12T11:43:14-03:00", "utc": "1978-06-12T14:43:14Z", "ms": 266510593561.91565 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 03:32 on Sun 11 Jun to 05:36 on Mon 12 Jun.", "fact": "1978-06-11T06:31:58Z → 1978-06-12T08:35:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:55–11:43 on the 11th, 10:55–11:43 on the 12th.", "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 11th and 0 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 19168 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Recife, 1978: Sunday 11 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": "1978-06-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-06-11", "confidence": "determinate" } ], "quote": "In Recife, Araṇya Gaurī Vrata 1978 falls on Sunday 11 June. Ṣaṣṭhī runs from 03:32 on Sun 11 Jun to 05:36 on Mon 12 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-06-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19168, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1978-06-11T03:31:58-03:00", "utc": "1978-06-11T06:31:58Z", "ms": 266394717884.96243 }, "end": { "local": "1978-06-12T05:35:45-03:00", "utc": "1978-06-12T08:35:45Z", "ms": 266488545437.56735 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1978-06-11T03:31:58-03:00", "utc": "1978-06-11T06:31:58Z", "ms": 266394717884.96243 }, "end": { "local": "1978-06-12T05:35:45-03:00", "utc": "1978-06-12T08:35:45Z", "ms": 266488545437.56735 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-06-11", "window": { "start": { "local": "1978-06-11T10:55:01-03:00", "utc": "1978-06-11T13:55:01Z", "ms": 266421301211.36392 }, "end": { "local": "1978-06-11T11:43:01-03:00", "utc": "1978-06-11T14:43:01Z", "ms": 266424181211.36392 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-06-12", "window": { "start": { "local": "1978-06-12T10:55:14-03:00", "utc": "1978-06-12T13:55:14Z", "ms": 266507713561.91565 }, "end": { "local": "1978-06-12T11:43:14-03:00", "utc": "1978-06-12T14:43:14Z", "ms": 266510593561.91565 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 03:32 on Sun 11 Jun to 05:36 on Mon 12 Jun.", "fact": "1978-06-11T06:31:58Z → 1978-06-12T08:35:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:55–11:43 on the 11th, 10:55–11:43 on the 12th.", "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 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 19168 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Recife, 1978: Sunday 11 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": "1978-06-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-06-11", "confidence": "determinate" } ], "quote": "In Recife, Skanda Ṣaṣṭhī (Jyaiṣṭha) 1978 falls on Sunday 11 June. Ṣaṣṭhī runs from 03:32 on Sun 11 Jun to 05:36 on Mon 12 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-06-17", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-06-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1757, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-06-16T07:32:42-03:00", "utc": "1978-06-16T10:32:42Z", "ms": 266841162008.35715 }, "end": { "local": "1978-06-17T06:00:07-03:00", "utc": "1978-06-17T09:00:07Z", "ms": 266922006744.08047 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1978-06-16T07:32:42-03:00", "utc": "1978-06-16T10:32:42Z", "ms": 266841162008.35715 }, "end": { "local": "1978-06-17T06:00:07-03:00", "utc": "1978-06-17T09:00:07Z", "ms": 266922006744.08047 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-06-16", "window": { "start": { "local": "1978-06-16T05:30:35-03:00", "utc": "1978-06-16T08:30:35Z", "ms": 266833835211.18283 }, "end": { "local": "1978-06-16T05:30:35-03:00", "utc": "1978-06-16T08:30:35Z", "ms": 266833835211.18283 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-06-17", "window": { "start": { "local": "1978-06-17T05:30:49-03:00", "utc": "1978-06-17T08:30:49Z", "ms": 266920249381.78192 }, "end": { "local": "1978-06-17T05:30:49-03:00", "utc": "1978-06-17T08:30:49Z", "ms": 266920249381.78192 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:33 on Fri 16 Jun to 06:00 on Sat 17 Jun.", "fact": "1978-06-16T10:32:42Z → 1978-06-17T09:00:07Z" }, { "step": "kaala", "text": "Sunrise is at 05:31 on the 16th and 05:31 on the 17th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 16th and is on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1757 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Recife, 1978: Saturday 17 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": "1978-06-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-06-17", "confidence": "determinate" } ], "quote": "In Recife, Nirjalā Ekādaśī 1978 falls on Saturday 17 June. Ekādaśī runs from 07:33 on Fri 16 Jun to 06:00 on Sat 17 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-06-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-06-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17771, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1978-06-17T06:00:07-03:00", "utc": "1978-06-17T09:00:07Z", "ms": 266922006744.08047 }, "end": { "local": "1978-06-18T03:41:22-03:00", "utc": "1978-06-18T06:41:22Z", "ms": 267000082464.18298 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1978-06-17T06:00:07-03:00", "utc": "1978-06-17T09:00:07Z", "ms": 266922006744.08047 }, "end": { "local": "1978-06-18T03:41:22-03:00", "utc": "1978-06-18T06:41:22Z", "ms": 267000082464.18298 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-06-17", "window": { "start": { "local": "1978-06-17T10:56:17-03:00", "utc": "1978-06-17T13:56:17Z", "ms": 266939777314.04596 }, "end": { "local": "1978-06-17T11:44:17-03:00", "utc": "1978-06-17T14:44:17Z", "ms": 266942657314.04596 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-06-18", "window": { "start": { "local": "1978-06-18T10:56:30-03:00", "utc": "1978-06-18T13:56:30Z", "ms": 267026190307.69308 }, "end": { "local": "1978-06-18T11:44:30-03:00", "utc": "1978-06-18T14:44:30Z", "ms": 267029070307.69308 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 06:00 on Sat 17 Jun to 03:41 on Sun 18 Jun.", "fact": "1978-06-17T09:00:07Z → 1978-06-18T06:41:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:56–11:44 on the 17th, 10:57–11:45 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 17771 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Recife, 1978: Saturday 17 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": "1978-06-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-06-17", "confidence": "determinate" } ], "quote": "In Recife, Śrī Rāma Dvādaśī 1978 falls on Saturday 17 June. Dvādaśī runs from 06:00 on Sat 17 Jun to 03:41 on Sun 18 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/pradosha-vrata?on=1978-06-18", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-06-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21296, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-06-18T03:41:22-03:00", "utc": "1978-06-18T06:41:22Z", "ms": 267000082464.18298 }, "end": { "local": "1978-06-19T00:43:44-03:00", "utc": "1978-06-19T03:43:44Z", "ms": 267075824250.79697 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1978-06-18T03:41:22-03:00", "utc": "1978-06-18T06:41:22Z", "ms": 267000082464.18298 }, "end": { "local": "1978-06-19T00:43:44-03:00", "utc": "1978-06-19T03:43:44Z", "ms": 267075824250.79697 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-06-17", "window": { "start": { "local": "1978-06-17T17:09:45-03:00", "utc": "1978-06-17T20:09:45Z", "ms": 266962185246.30997 }, "end": { "local": "1978-06-17T18:48:36-03:00", "utc": "1978-06-17T21:48:36Z", "ms": 266968115659.22284 } }, "covered_min": 0, "window_min": 99, "qualifies": false }, { "local_date": "1978-06-18", "window": { "start": { "local": "1978-06-18T17:09:57-03:00", "utc": "1978-06-18T20:09:57Z", "ms": 267048597272.22955 }, "end": { "local": "1978-06-18T18:48:48-03:00", "utc": "1978-06-18T21:48:48Z", "ms": 267054527912.5709 } }, "covered_min": 99, "window_min": 99, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:41 on Sun 18 Jun to 00:44 on Mon 19 Jun.", "fact": "1978-06-18T06:41:22Z → 1978-06-19T03:43:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:10–18:49 on the 17th, 17:10–18:49 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 99 minutes on the 17th and 99 of 99 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21296 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Recife, 1978: Sunday 18 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": "1978-06-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-06-18", "confidence": "determinate" } ], "quote": "In Recife, Śukla Pradoṣa Vrata 1978 falls on Sunday 18 June. Trayodaśī runs from 03:41 on Sun 18 Jun to 00:44 on Mon 19 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-06-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-06-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1208, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-06-19T21:16:34-03:00", "utc": "1978-06-20T00:16:34Z", "ms": 267149793934.47278 }, "end": { "local": "1978-06-20T17:30:30-03:00", "utc": "1978-06-20T20:30:30Z", "ms": 267222630483.88116 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1978-06-19T21:16:34-03:00", "utc": "1978-06-20T00:16:34Z", "ms": 267149793934.47278 }, "end": { "local": "1978-06-20T17:30:30-03:00", "utc": "1978-06-20T20:30:30Z", "ms": 267222630483.88116 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-06-19", "window": { "start": { "local": "1978-06-19T17:10:10-03:00", "utc": "1978-06-19T20:10:10Z", "ms": 267135009593.17282 }, "end": { "local": "1978-06-19T18:49:00-03:00", "utc": "1978-06-19T21:49:00Z", "ms": 267140940388.38983 } }, "covered_min": 0, "window_min": 99, "qualifies": false }, { "local_date": "1978-06-20", "window": { "start": { "local": "1978-06-20T17:10:22-03:00", "utc": "1978-06-20T20:10:22Z", "ms": 267221422190.7324 }, "end": { "local": "1978-06-20T18:49:13-03:00", "utc": "1978-06-20T21:49:13Z", "ms": 267227353068.25916 } }, "covered_min": 20, "window_min": 99, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:17 on Mon 19 Jun to 17:31 on Tue 20 Jun.", "fact": "1978-06-20T00:16:34Z → 1978-06-20T20:30:30Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:10–18:49 on the 19th, 17:10–18:49 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 0 of 99 minutes on the 19th and 20 of 99 on the 20th.", "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 1208 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Recife, 1978: Tuesday 20 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": "1978-06-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-06-20", "confidence": "determinate" } ], "quote": "In Recife, Vaṭa Sāvitrī Vrata 1978 falls on Tuesday 20 June. Pūrṇimā runs from 21:17 on Mon 19 Jun to 17:31 on Tue 20 Jun and covers 20 of 99 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/sankashta-chaturthi?on=1978-06-23", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-06-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24138, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-06-23T06:11:17-03:00", "utc": "1978-06-23T09:11:17Z", "ms": 267441076538.30692 }, "end": { "local": "1978-06-24T03:00:09-03:00", "utc": "1978-06-24T06:00:09Z", "ms": 267516009143.21677 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-06-23T06:11:17-03:00", "utc": "1978-06-23T09:11:17Z", "ms": 267441076538.30692 }, "end": { "local": "1978-06-24T03:00:09-03:00", "utc": "1978-06-24T06:00:09Z", "ms": 267516009143.21677 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-06-22", "window": { "start": { "local": "1978-06-22T19:17:23-03:00", "utc": "1978-06-22T22:17:23Z", "ms": 267401843361.68723 }, "end": { "local": "1978-06-22T19:17:23-03:00", "utc": "1978-06-22T22:17:23Z", "ms": 267401843361.68723 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-06-23", "window": { "start": { "local": "1978-06-23T20:17:51-03:00", "utc": "1978-06-23T23:17:51Z", "ms": 267491871043.957 }, "end": { "local": "1978-06-23T20:17:51-03:00", "utc": "1978-06-23T23:17:51Z", "ms": 267491871043.957 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:11 on Fri 23 Jun to 03:00 on Sat 24 Jun.", "fact": "1978-06-23T09:11:17Z → 1978-06-24T06:00:09Z" }, { "step": "kaala", "text": "Moonrise is at 19:17 on the 22nd and 20:18 on the 23rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 22nd and is on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24138 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Recife, 1978: Friday 23 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": "1978-06-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-06-23", "confidence": "determinate" } ], "quote": "In Recife, Saṅkaṣṭa Caturthī 1978 falls on Friday 23 June. Caturthī runs from 06:11 on Fri 23 Jun to 03:00 on Sat 24 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/sankashta-chaturthi?on=1978-06-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/ekadashi?on=1978-06-30", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-06-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24745, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-06-29T21:25:42-03:00", "utc": "1978-06-30T00:25:42Z", "ms": 268014342277.80103 }, "end": { "local": "1978-06-30T22:41:12-03:00", "utc": "1978-07-01T01:41:12Z", "ms": 268105272416.7001 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-06-29T21:25:42-03:00", "utc": "1978-06-30T00:25:42Z", "ms": 268014342277.80103 }, "end": { "local": "1978-06-30T22:41:12-03:00", "utc": "1978-07-01T01:41:12Z", "ms": 268105272416.7001 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-06-30", "window": { "start": { "local": "1978-06-30T05:33:28-03:00", "utc": "1978-06-30T08:33:28Z", "ms": 268043607538.63657 }, "end": { "local": "1978-06-30T05:33:28-03:00", "utc": "1978-06-30T08:33:28Z", "ms": 268043607538.63657 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-07-01", "window": { "start": { "local": "1978-07-01T05:33:37-03:00", "utc": "1978-07-01T08:33:37Z", "ms": 268130016999.9586 }, "end": { "local": "1978-07-01T05:33:37-03:00", "utc": "1978-07-01T08:33:37Z", "ms": 268130016999.9586 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:26 on Thu 29 Jun to 22:41 on Fri 30 Jun.", "fact": "1978-06-30T00:25:42Z → 1978-07-01T01:41:12Z" }, { "step": "kaala", "text": "Sunrise is at 05:33 on the 30th and 05:34 on the 1st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 30th and is not on the 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 24745 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Recife, 1978: Friday 30 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": "1978-06-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-06-30", "confidence": "determinate" } ], "quote": "In Recife, Yoginī Ekādaśī 1978 falls on Friday 30 June. Ekādaśī runs from 21:26 on Thu 29 Jun to 22:41 on Fri 30 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-06-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-07-02", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19757, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-07-02T00:20:57-03:00", "utc": "1978-07-02T03:20:57Z", "ms": 268197657296.59064 }, "end": { "local": "1978-07-03T02:18:58-03:00", "utc": "1978-07-03T05:18:58Z", "ms": 268291138357.96347 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-07-02T00:20:57-03:00", "utc": "1978-07-02T03:20:57Z", "ms": 268197657296.59064 }, "end": { "local": "1978-07-03T02:18:58-03:00", "utc": "1978-07-03T05:18:58Z", "ms": 268291138357.96347 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-07-01", "window": { "start": { "local": "1978-07-01T17:12:53-03:00", "utc": "1978-07-01T20:12:53Z", "ms": 268171973417.13226 }, "end": { "local": "1978-07-01T18:51:40-03:00", "utc": "1978-07-01T21:51:40Z", "ms": 268177900423.54315 } }, "covered_min": 0, "window_min": 99, "qualifies": false }, { "local_date": "1978-07-02", "window": { "start": { "local": "1978-07-02T17:13:08-03:00", "utc": "1978-07-02T20:13:08Z", "ms": 268258387719.66547 }, "end": { "local": "1978-07-02T18:51:54-03:00", "utc": "1978-07-02T21:51:54Z", "ms": 268264313945.31866 } }, "covered_min": 99, "window_min": 99, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:21 on Sun 2 Jul to 02:19 on Mon 3 Jul.", "fact": "1978-07-02T03:20:57Z → 1978-07-03T05:18:58Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:13–18:52 on the 1st, 17:13–18:52 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 0 of 99 minutes on the 1st and 99 of 99 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 19757 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Recife, 1978: Sunday 2 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-07-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-02", "confidence": "determinate" } ], "quote": "In Recife, Kṛṣṇa Pradoṣa Vrata 1978 falls on Sunday 2 July. Trayodaśī runs from 00:21 on Sun 2 Jul to 02:19 on Mon 3 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-07-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shivaratri?on=1978-07-03", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9087, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-07-03T02:18:58-03:00", "utc": "1978-07-03T05:18:58Z", "ms": 268291138357.96347 }, "end": { "local": "1978-07-04T04:30:11-03:00", "utc": "1978-07-04T07:30:11Z", "ms": 268385410910.6311 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-07-03T02:18:58-03:00", "utc": "1978-07-03T05:18:58Z", "ms": 268291138357.96347 }, "end": { "local": "1978-07-04T04:30:11-03:00", "utc": "1978-07-04T07:30:11Z", "ms": 268385410910.6311 } }, "kaala": "nishita", "days": [ { "local_date": "1978-07-02", "window": { "start": { "local": "1978-07-02T22:59:31-03:00", "utc": "1978-07-03T01:59:31Z", "ms": 268279171065.865 }, "end": { "local": "1978-07-02T23:47:31-03:00", "utc": "1978-07-03T02:47:31Z", "ms": 268282051065.865 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-07-03", "window": { "start": { "local": "1978-07-03T22:59:42-03:00", "utc": "1978-07-04T01:59:42Z", "ms": 268365582161.1235 }, "end": { "local": "1978-07-03T23:47:42-03:00", "utc": "1978-07-04T02:47:42Z", "ms": 268368462161.1235 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:19 on Mon 3 Jul to 04:30 on Tue 4 Jul.", "fact": "1978-07-03T05:18:58Z → 1978-07-04T07:30:11Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:00–23:48 on the 2nd, 23:00–23:48 on the 3rd.", "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 2nd and 48 of 48 on the 3rd.", "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 9087 s" }, { "step": "ruling", "text": "Śivarātri, Recife, 1978: Monday 3 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": "1978-07-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-03", "confidence": "determinate" } ], "quote": "In Recife, Śivarātri 1978 falls on Monday 3 July. Caturdaśī runs from 02:19 on Mon 3 Jul to 04:30 on Tue 4 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/shivaratri?on=1978-07-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 452, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1978-07-06T09:15:21-03:00", "utc": "1978-07-06T12:15:21Z", "ms": 268575321068.4103 }, "end": { "local": "1978-07-07T11:40:48-03:00", "utc": "1978-07-07T14:40:48Z", "ms": 268670448231.13934 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-07-06T09:15:21-03:00", "utc": "1978-07-06T12:15:21Z", "ms": 268575321068.4103 }, "end": { "local": "1978-07-07T11:40:48-03:00", "utc": "1978-07-07T14:40:48Z", "ms": 268670448231.13934 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-07-06", "window": { "start": { "local": "1978-07-06T11:00:10-03:00", "utc": "1978-07-06T14:00:10Z", "ms": 268581610453.93866 }, "end": { "local": "1978-07-06T11:48:10-03:00", "utc": "1978-07-06T14:48:10Z", "ms": 268584490453.93866 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-07-07", "window": { "start": { "local": "1978-07-07T11:00:21-03:00", "utc": "1978-07-07T14:00:21Z", "ms": 268668020507.5105 }, "end": { "local": "1978-07-07T11:48:21-03:00", "utc": "1978-07-07T14:48:21Z", "ms": 268670900507.5105 } }, "covered_min": 40, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 09:15 on Thu 6 Jul to 11:41 on Fri 7 Jul.", "fact": "1978-07-06T12:15:21Z → 1978-07-07T14:40:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:00–11:48 on the 6th, 11:00–11:48 on the 7th.", "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 6th and 40 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 452 s" }, { "step": "ruling", "text": "Rathayātrā, Recife, 1978: Friday 7 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": "1978-07-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-07", "confidence": "determinate" } ], "quote": "In Recife, Rathayātrā 1978 falls on Friday 7 July. Dvitīyā runs from 09:15 on Thu 6 Jul to 11:41 on Fri 7 Jul and covers 40 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/vinayaka-chaturthi?on=1978-07-09", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7947, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-07-08T14:00:57-03:00", "utc": "1978-07-08T17:00:57Z", "ms": 268765256983.06805 }, "end": { "local": "1978-07-09T16:08:29-03:00", "utc": "1978-07-09T19:08:29Z", "ms": 268859309061.37323 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-07-08T14:00:57-03:00", "utc": "1978-07-08T17:00:57Z", "ms": 268765256983.06805 }, "end": { "local": "1978-07-09T16:08:29-03:00", "utc": "1978-07-09T19:08:29Z", "ms": 268859309061.37323 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-07-08", "window": { "start": { "local": "1978-07-08T11:00:30-03:00", "utc": "1978-07-08T14:00:30Z", "ms": 268754430176.08585 }, "end": { "local": "1978-07-08T11:48:30-03:00", "utc": "1978-07-08T14:48:30Z", "ms": 268757310176.08585 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-07-09", "window": { "start": { "local": "1978-07-09T11:00:39-03:00", "utc": "1978-07-09T14:00:39Z", "ms": 268840839438.35962 }, "end": { "local": "1978-07-09T11:48:39-03:00", "utc": "1978-07-09T14:48:39Z", "ms": 268843719438.35962 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:01 on Sat 8 Jul to 16:08 on Sun 9 Jul.", "fact": "1978-07-08T17:00:57Z → 1978-07-09T19:08:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:01–11:49 on the 8th, 11:01–11:49 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 7947 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Recife, 1978: Sunday 9 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-07-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-09", "confidence": "determinate" } ], "quote": "In Recife, Vināyaka Caturthī 1978 falls on Sunday 9 July. Caturthī runs from 14:01 on Sat 8 Jul to 16:08 on Sun 9 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/vinayaka-chaturthi?on=1978-07-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15590, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1978-07-09T16:08:29-03:00", "utc": "1978-07-09T19:08:29Z", "ms": 268859309061.37323 }, "end": { "local": "1978-07-10T17:54:43-03:00", "utc": "1978-07-10T20:54:43Z", "ms": 268952083356.47952 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-07-09T16:08:29-03:00", "utc": "1978-07-09T19:08:29Z", "ms": 268859309061.37323 }, "end": { "local": "1978-07-10T17:54:43-03:00", "utc": "1978-07-10T20:54:43Z", "ms": 268952083356.47952 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-07-09", "window": { "start": { "local": "1978-07-09T11:00:39-03:00", "utc": "1978-07-09T14:00:39Z", "ms": 268840839438.35962 }, "end": { "local": "1978-07-09T11:48:39-03:00", "utc": "1978-07-09T14:48:39Z", "ms": 268843719438.35962 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-07-10", "window": { "start": { "local": "1978-07-10T11:00:48-03:00", "utc": "1978-07-10T14:00:48Z", "ms": 268927248273.9605 }, "end": { "local": "1978-07-10T11:48:48-03:00", "utc": "1978-07-10T14:48:48Z", "ms": 268930128273.9605 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 16:08 on Sun 9 Jul to 17:55 on Mon 10 Jul.", "fact": "1978-07-09T19:08:29Z → 1978-07-10T20:54:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:01–11:49 on the 9th, 11:01–11:49 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15590 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Recife, 1978: Monday 10 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": "1978-07-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-10", "confidence": "determinate" } ], "quote": "In Recife, Skanda Pañcamī 1978 falls on Monday 10 July. Pañcamī runs from 16:08 on Sun 9 Jul to 17:55 on Mon 10 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26490, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1978-07-11T19:10:27-03:00", "utc": "1978-07-11T22:10:27Z", "ms": 269043026886.6746 }, "end": { "local": "1978-07-12T19:47:14-03:00", "utc": "1978-07-12T22:47:14Z", "ms": 269131633678.14658 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-07-11T19:10:27-03:00", "utc": "1978-07-11T22:10:27Z", "ms": 269043026886.6746 }, "end": { "local": "1978-07-12T19:47:14-03:00", "utc": "1978-07-12T22:47:14Z", "ms": 269131633678.14658 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-07-11", "window": { "start": { "local": "1978-07-11T11:00:57-03:00", "utc": "1978-07-11T14:00:57Z", "ms": 269013656663.55127 }, "end": { "local": "1978-07-11T11:48:57-03:00", "utc": "1978-07-11T14:48:57Z", "ms": 269016536663.55127 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-07-12", "window": { "start": { "local": "1978-07-12T11:01:05-03:00", "utc": "1978-07-12T14:01:05Z", "ms": 269100064588.93707 }, "end": { "local": "1978-07-12T11:49:05-03:00", "utc": "1978-07-12T14:49:05Z", "ms": 269102944588.93707 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 19:10 on Tue 11 Jul to 19:47 on Wed 12 Jul.", "fact": "1978-07-11T22:10:27Z → 1978-07-12T22:47:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:01–11:49 on the 11th, 11:01–11:49 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 26490 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Recife, 1978: Wednesday 12 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vivasvat-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Vivasvat saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-07-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-12", "confidence": "determinate" } ], "quote": "In Recife, Vivasvat Saptamī 1978 falls on Wednesday 12 July. Saptamī runs from 19:10 on Tue 11 Jul to 19:47 on Wed 12 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-07-16", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32094, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-07-15T16:57:44-03:00", "utc": "1978-07-15T19:57:44Z", "ms": 269380664495.77734 }, "end": { "local": "1978-07-16T14:29:42-03:00", "utc": "1978-07-16T17:29:42Z", "ms": 269458181600.0618 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-07-15T16:57:44-03:00", "utc": "1978-07-15T19:57:44Z", "ms": 269380664495.77734 }, "end": { "local": "1978-07-16T14:29:42-03:00", "utc": "1978-07-16T17:29:42Z", "ms": 269458181600.0618 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-07-15", "window": { "start": { "local": "1978-07-15T05:34:48-03:00", "utc": "1978-07-15T08:34:48Z", "ms": 269339687921.3926 }, "end": { "local": "1978-07-15T05:34:48-03:00", "utc": "1978-07-15T08:34:48Z", "ms": 269339687921.3926 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-07-16", "window": { "start": { "local": "1978-07-16T05:34:48-03:00", "utc": "1978-07-16T08:34:48Z", "ms": 269426087884.02933 }, "end": { "local": "1978-07-16T05:34:48-03:00", "utc": "1978-07-16T08:34:48Z", "ms": 269426087884.02933 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:58 on Sat 15 Jul to 14:30 on Sun 16 Jul.", "fact": "1978-07-15T19:57:44Z → 1978-07-16T17:29:42Z" }, { "step": "kaala", "text": "Sunrise is at 05:35 on the 15th and 05:35 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 32094 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Recife, 1978: Sunday 16 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": "1978-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-16", "confidence": "determinate" } ], "quote": "In Recife, Hariśayanī Ekādaśī 1978 falls on Sunday 16 July. Ekādaśī runs from 16:58 on Sat 15 Jul to 14:30 on Sun 16 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-07-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-07-17", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21097, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-07-17T11:24:50-03:00", "utc": "1978-07-17T14:24:50Z", "ms": 269533489541.36807 }, "end": { "local": "1978-07-18T07:52:05-03:00", "utc": "1978-07-18T10:52:05Z", "ms": 269607124711.189 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-07-17T11:24:50-03:00", "utc": "1978-07-17T14:24:50Z", "ms": 269533489541.36807 }, "end": { "local": "1978-07-18T07:52:05-03:00", "utc": "1978-07-18T10:52:05Z", "ms": 269607124711.189 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-07-17", "window": { "start": { "local": "1978-07-17T17:16:26-03:00", "utc": "1978-07-17T20:16:26Z", "ms": 269554586328.29523 }, "end": { "local": "1978-07-17T18:54:53-03:00", "utc": "1978-07-17T21:54:53Z", "ms": 269560492893.16034 } }, "covered_min": 98, "window_min": 98, "qualifies": true }, { "local_date": "1978-07-18", "window": { "start": { "local": "1978-07-18T17:16:38-03:00", "utc": "1978-07-18T20:16:38Z", "ms": 269640997545.4131 }, "end": { "local": "1978-07-18T18:55:02-03:00", "utc": "1978-07-18T21:55:02Z", "ms": 269646902309.31473 } }, "covered_min": 0, "window_min": 98, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:25 on Mon 17 Jul to 07:52 on Tue 18 Jul.", "fact": "1978-07-17T14:24:50Z → 1978-07-18T10:52:05Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:16–18:55 on the 17th, 17:17–18:55 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 98 of 98 minutes on the 17th and 0 of 98 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21097 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Recife, 1978: Monday 17 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": "1978-07-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-17", "confidence": "determinate" } ], "quote": "In Recife, Śukla Pradoṣa Vrata 1978 falls on Monday 17 July. Trayodaśī runs from 11:25 on Mon 17 Jul to 07:52 on Tue 18 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-07-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5579, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-07-19T04:01:44-03:00", "utc": "1978-07-19T07:01:44Z", "ms": 269679704466.2959 }, "end": { "local": "1978-07-20T00:04:49-03:00", "utc": "1978-07-20T03:04:49Z", "ms": 269751889409.25226 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-07-19T04:01:44-03:00", "utc": "1978-07-19T07:01:44Z", "ms": 269679704466.2959 }, "end": { "local": "1978-07-20T00:04:49-03:00", "utc": "1978-07-20T03:04:49Z", "ms": 269751889409.25226 } }, "kaala": "udaya-3", "days": [ { "local_date": "1978-07-19", "window": { "start": { "local": "1978-07-19T05:34:43-03:00", "utc": "1978-07-19T08:34:43Z", "ms": 269685283274.67532 }, "end": { "local": "1978-07-19T07:55:08-03:00", "utc": "1978-07-19T10:55:08Z", "ms": 269693708304.2964 } }, "covered_min": 140, "window_min": 140, "qualifies": true }, { "local_date": "1978-07-20", "window": { "start": { "local": "1978-07-20T05:34:40-03:00", "utc": "1978-07-20T08:34:40Z", "ms": 269771680228.34174 }, "end": { "local": "1978-07-20T07:55:08-03:00", "utc": "1978-07-20T10:55:08Z", "ms": 269780107973.1575 } }, "covered_min": 0, "window_min": 140, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 04:02 on Wed 19 Jul to 00:05 on Thu 20 Jul.", "fact": "1978-07-19T07:01:44Z → 1978-07-20T03:04:49Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:35–07:55 on the 19th, 05:35–07:55 on the 20th.", "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 140 of 140 minutes on the 19th and 0 of 140 on the 20th.", "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 5579 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Recife, 1978: Wednesday 19 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": "1978-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-19", "confidence": "determinate" } ], "quote": "In Recife, Vyāsa Pūjā 1978 falls on Wednesday 19 July. Pūrṇimā runs from 04:02 on Wed 19 Jul to 00:05 on Thu 20 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25201, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-07-19T04:01:44-03:00", "utc": "1978-07-19T07:01:44Z", "ms": 269679704466.2959 }, "end": { "local": "1978-07-20T00:04:49-03:00", "utc": "1978-07-20T03:04:49Z", "ms": 269751889409.25226 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-07-19T04:01:44-03:00", "utc": "1978-07-19T07:01:44Z", "ms": 269679704466.2959 }, "end": { "local": "1978-07-20T00:04:49-03:00", "utc": "1978-07-20T03:04:49Z", "ms": 269751889409.25226 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-07-19", "window": { "start": { "local": "1978-07-19T11:01:46-03:00", "utc": "1978-07-19T14:01:46Z", "ms": 269704905848.72797 }, "end": { "local": "1978-07-19T11:49:46-03:00", "utc": "1978-07-19T14:49:46Z", "ms": 269707785848.72797 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-07-20", "window": { "start": { "local": "1978-07-20T11:01:50-03:00", "utc": "1978-07-20T14:01:50Z", "ms": 269791309590.38113 }, "end": { "local": "1978-07-20T11:49:50-03:00", "utc": "1978-07-20T14:49:50Z", "ms": 269794189590.38113 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 04:02 on Wed 19 Jul to 00:05 on Thu 20 Jul.", "fact": "1978-07-19T07:01:44Z → 1978-07-20T03:04:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:02–11:50 on the 19th, 11:02–11:50 on the 20th.", "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 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25201 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Recife, 1978: Wednesday 19 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": "1978-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-19", "confidence": "determinate" } ], "quote": "In Recife, Guru Pūrṇimā 1978 falls on Wednesday 19 July. Pūrṇimā runs from 04:02 on Wed 19 Jul to 00:05 on Thu 20 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24481, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-07-19T04:01:44-03:00", "utc": "1978-07-19T07:01:44Z", "ms": 269679704466.2959 }, "end": { "local": "1978-07-20T00:04:49-03:00", "utc": "1978-07-20T03:04:49Z", "ms": 269751889409.25226 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-07-19T04:01:44-03:00", "utc": "1978-07-19T07:01:44Z", "ms": 269679704466.2959 }, "end": { "local": "1978-07-20T00:04:49-03:00", "utc": "1978-07-20T03:04:49Z", "ms": 269751889409.25226 } }, "kaala": "sayahna", "days": [ { "local_date": "1978-07-18", "window": { "start": { "local": "1978-07-18T14:56:15-03:00", "utc": "1978-07-18T17:56:15Z", "ms": 269632575149.28717 }, "end": { "local": "1978-07-18T17:16:38-03:00", "utc": "1978-07-18T20:16:38Z", "ms": 269640997545.4131 } }, "covered_min": 0, "window_min": 140, "qualifies": false }, { "local_date": "1978-07-19", "window": { "start": { "local": "1978-07-19T14:56:23-03:00", "utc": "1978-07-19T17:56:23Z", "ms": 269718983393.15952 }, "end": { "local": "1978-07-19T17:16:48-03:00", "utc": "1978-07-19T20:16:48Z", "ms": 269727408422.78058 } }, "covered_min": 140, "window_min": 140, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 04:02 on Wed 19 Jul to 00:05 on Thu 20 Jul.", "fact": "1978-07-19T07:01:44Z → 1978-07-20T03:04:49Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 14:56–17:17 on the 18th, 14:56–17:17 on the 19th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 0 of 140 minutes on the 18th and 140 of 140 on the 19th.", "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 24481 s" }, { "step": "ruling", "text": "Kokilā Vrata, Recife, 1978: Wednesday 19 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": "1978-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-19", "confidence": "determinate" } ], "quote": "In Recife, Kokilā Vrata 1978 falls on Wednesday 19 July. Pūrṇimā runs from 04:02 on Wed 19 Jul to 00:05 on Thu 20 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18578, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-07-19T04:01:44-03:00", "utc": "1978-07-19T07:01:44Z", "ms": 269679704466.2959 }, "end": { "local": "1978-07-20T00:04:49-03:00", "utc": "1978-07-20T03:04:49Z", "ms": 269751889409.25226 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1978-07-19T04:01:44-03:00", "utc": "1978-07-19T07:01:44Z", "ms": 269679704466.2959 }, "end": { "local": "1978-07-20T00:04:49-03:00", "utc": "1978-07-20T03:04:49Z", "ms": 269751889409.25226 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-07-18", "window": { "start": { "local": "1978-07-18T17:16:38-03:00", "utc": "1978-07-18T20:16:38Z", "ms": 269640997545.4131 }, "end": { "local": "1978-07-18T18:55:02-03:00", "utc": "1978-07-18T21:55:02Z", "ms": 269646902309.31473 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "1978-07-19", "window": { "start": { "local": "1978-07-19T17:16:48-03:00", "utc": "1978-07-19T20:16:48Z", "ms": 269727408422.78058 }, "end": { "local": "1978-07-19T18:55:11-03:00", "utc": "1978-07-19T21:55:11Z", "ms": 269733311330.18872 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 04:02 on Wed 19 Jul to 00:05 on Thu 20 Jul.", "fact": "1978-07-19T07:01:44Z → 1978-07-20T03:04:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:17–18:55 on the 18th, 17:17–18:55 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 0 of 98 minutes on the 18th and 98 of 98 on the 19th.", "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 18578 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Recife, 1978: Wednesday 19 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": "1978-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-19", "confidence": "determinate" } ], "quote": "In Recife, Śiva Śayanotsava 1978 falls on Wednesday 19 July. Pūrṇimā runs from 04:02 on Wed 19 Jul to 00:05 on Thu 20 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-20", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 7981, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1978-07-20T20:12:32-03:00", "utc": "1978-07-20T23:12:32Z", "ms": 269824352018.03912 }, "end": { "local": "1978-07-21T16:35:49-03:00", "utc": "1978-07-21T19:35:49Z", "ms": 269897748625.41782 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1978-07-20T20:12:32-03:00", "utc": "1978-07-20T23:12:32Z", "ms": 269824352018.03912 }, "end": { "local": "1978-07-21T16:35:49-03:00", "utc": "1978-07-21T19:35:49Z", "ms": 269897748625.41782 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-07-20", "window": { "start": { "local": "1978-07-20T17:59:31-03:00", "utc": "1978-07-20T20:59:31Z", "ms": 269816370686.54385 }, "end": { "local": "1978-07-20T17:59:31-03:00", "utc": "1978-07-20T20:59:31Z", "ms": 269816370686.54385 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-07-21", "window": { "start": { "local": "1978-07-21T19:00:12-03:00", "utc": "1978-07-21T22:00:12Z", "ms": 269906411701.42065 }, "end": { "local": "1978-07-21T19:00:12-03:00", "utc": "1978-07-21T22:00:12Z", "ms": 269906411701.42065 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 20:13 on Thu 20 Jul to 16:36 on Fri 21 Jul.", "fact": "1978-07-20T23:12:32Z → 1978-07-21T19:35:49Z" }, { "step": "kaala", "text": "Moonrise is at 18:00 on the 20th and 19:00 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. 102" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 7981 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Recife, 1978: Thursday 20 July.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "ashunya-shayana-vrata-ashadha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 2 Asunya sayana vrata (candrodaya vyapini; purvahna vyapini and purvaviddha in Bengal)." } ], "not_evaluated": "In Bengal the row reads pūrvāhṇa and pūrvaviddha; that reading is not applied.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-07-20", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-20", "confidence": "boundary" } ], "quote": "In Recife, Aśūnya Śayana Vrata (Āṣāḍha) 1978 falls on Thursday 20 July. Dvitīyā runs from 20:13 on Thu 20 Jul to 16:36 on Fri 21 Jul, and is current at moonrise on neither day.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/sankashta-chaturthi?on=1978-07-22", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23597, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-07-22T13:24:51-03:00", "utc": "1978-07-22T16:24:51Z", "ms": 269972690787.52625 }, "end": { "local": "1978-07-23T10:48:33-03:00", "utc": "1978-07-23T13:48:33Z", "ms": 270049712808.0915 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1978-07-22T13:24:51-03:00", "utc": "1978-07-22T16:24:51Z", "ms": 269972690787.52625 }, "end": { "local": "1978-07-23T10:48:33-03:00", "utc": "1978-07-23T13:48:33Z", "ms": 270049712808.0915 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-07-22", "window": { "start": { "local": "1978-07-22T19:58:07-03:00", "utc": "1978-07-22T22:58:07Z", "ms": 269996287353.02112 }, "end": { "local": "1978-07-22T19:58:07-03:00", "utc": "1978-07-22T22:58:07Z", "ms": 269996287353.02112 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-07-23", "window": { "start": { "local": "1978-07-23T20:53:17-03:00", "utc": "1978-07-23T23:53:17Z", "ms": 270085997092.2127 }, "end": { "local": "1978-07-23T20:53:17-03:00", "utc": "1978-07-23T23:53:17Z", "ms": 270085997092.2127 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:25 on Sat 22 Jul to 10:49 on Sun 23 Jul.", "fact": "1978-07-22T16:24:51Z → 1978-07-23T13:48:33Z" }, { "step": "kaala", "text": "Moonrise is at 19:58 on the 22nd and 20:53 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 23597 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Recife, 1978: Saturday 22 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": "1978-07-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-22", "confidence": "determinate" } ], "quote": "In Recife, Saṅkaṣṭa Caturthī 1978 falls on Saturday 22 July. Caturthī runs from 13:25 on Sat 22 Jul to 10:49 on Sun 23 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/sankashta-chaturthi?on=1978-07-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/ekadashi?on=1978-07-30", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17825, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-07-29T10:30:44-03:00", "utc": "1978-07-29T13:30:44Z", "ms": 270567044132.85562 }, "end": { "local": "1978-07-30T12:32:19-03:00", "utc": "1978-07-30T15:32:19Z", "ms": 270660738723.32495 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1978-07-29T10:30:44-03:00", "utc": "1978-07-29T13:30:44Z", "ms": 270567044132.85562 }, "end": { "local": "1978-07-30T12:32:19-03:00", "utc": "1978-07-30T15:32:19Z", "ms": 270660738723.32495 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-07-29", "window": { "start": { "local": "1978-07-29T05:33:39-03:00", "utc": "1978-07-29T08:33:39Z", "ms": 270549218799.98364 }, "end": { "local": "1978-07-29T05:33:39-03:00", "utc": "1978-07-29T08:33:39Z", "ms": 270549218799.98364 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-07-30", "window": { "start": { "local": "1978-07-30T05:33:28-03:00", "utc": "1978-07-30T08:33:28Z", "ms": 270635608194.38644 }, "end": { "local": "1978-07-30T05:33:28-03:00", "utc": "1978-07-30T08:33:28Z", "ms": 270635608194.38644 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:31 on Sat 29 Jul to 12:32 on Sun 30 Jul.", "fact": "1978-07-29T13:30:44Z → 1978-07-30T15:32:19Z" }, { "step": "kaala", "text": "Sunrise is at 05:34 on the 29th and 05:33 on the 30th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 29th and is on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17825 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Recife, 1978: Sunday 30 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-07-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-30", "confidence": "determinate" } ], "quote": "In Recife, Kāmikā Ekādaśī 1978 falls on Sunday 30 July. Ekādaśī runs from 10:31 on Sat 29 Jul to 12:32 on Sun 30 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-07-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-07-31", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-07-31", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 285, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-07-31T14:49:17-03:00", "utc": "1978-07-31T17:49:17Z", "ms": 270755357245.88165 }, "end": { "local": "1978-08-01T17:13:51-03:00", "utc": "1978-08-01T20:13:51Z", "ms": 270850430554.01236 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1978-07-31T14:49:17-03:00", "utc": "1978-07-31T17:49:17Z", "ms": 270755357245.88165 }, "end": { "local": "1978-08-01T17:13:51-03:00", "utc": "1978-08-01T20:13:51Z", "ms": 270850430554.01236 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-07-31", "window": { "start": { "local": "1978-07-31T17:18:30-03:00", "utc": "1978-07-31T20:18:30Z", "ms": 270764309779.38522 }, "end": { "local": "1978-07-31T18:56:26-03:00", "utc": "1978-07-31T21:56:26Z", "ms": 270770186437.31125 } }, "covered_min": 98, "window_min": 98, "qualifies": true }, { "local_date": "1978-08-01", "window": { "start": { "local": "1978-08-01T17:18:36-03:00", "utc": "1978-08-01T20:18:36Z", "ms": 270850715562.03625 }, "end": { "local": "1978-08-01T18:56:30-03:00", "utc": "1978-08-01T21:56:30Z", "ms": 270856589732.51617 } }, "covered_min": 0, "window_min": 98, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:49 on Mon 31 Jul to 17:14 on Tue 1 Aug.", "fact": "1978-07-31T17:49:17Z → 1978-08-01T20:13:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:18–18:56 on the 31st, 17:19–18:56 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 98 of 98 minutes on the 31st and 0 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 285 s < 300 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Recife, 1978: Monday 31 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": "1978-07-31", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-07-31", "confidence": "boundary" } ], "quote": "In Recife, Kṛṣṇa Pradoṣa Vrata 1978 falls on Monday 31 July. Trayodaśī runs from 14:49 on Mon 31 Jul to 17:14 on Tue 1 Aug and covers all of pradoṣa that evening. It is 4 min 45 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-07-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shivaratri?on=1978-08-01", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12133, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-08-01T17:13:51-03:00", "utc": "1978-08-01T20:13:51Z", "ms": 270850430554.01236 }, "end": { "local": "1978-08-02T19:39:27-03:00", "utc": "1978-08-02T22:39:27Z", "ms": 270945566739.54364 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1978-08-01T17:13:51-03:00", "utc": "1978-08-01T20:13:51Z", "ms": 270850430554.01236 }, "end": { "local": "1978-08-02T19:39:27-03:00", "utc": "1978-08-02T22:39:27Z", "ms": 270945566739.54364 } }, "kaala": "nishita", "days": [ { "local_date": "1978-08-01", "window": { "start": { "local": "1978-08-01T23:01:44-03:00", "utc": "1978-08-02T02:01:44Z", "ms": 270871303701.336 }, "end": { "local": "1978-08-01T23:49:44-03:00", "utc": "1978-08-02T02:49:44Z", "ms": 270874183701.336 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-08-02", "window": { "start": { "local": "1978-08-02T23:01:40-03:00", "utc": "1978-08-03T02:01:40Z", "ms": 270957699556.85455 }, "end": { "local": "1978-08-02T23:49:40-03:00", "utc": "1978-08-03T02:49:40Z", "ms": 270960579556.85455 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:14 on Tue 1 Aug to 19:39 on Wed 2 Aug.", "fact": "1978-08-01T20:13:51Z → 1978-08-02T22:39:27Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:02–23:50 on the 1st, 23:02–23:50 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 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. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12133 s" }, { "step": "ruling", "text": "Śivarātri, Recife, 1978: Tuesday 1 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": "1978-08-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-01", "confidence": "determinate" } ], "quote": "In Recife, Śivarātri 1978 falls on Tuesday 1 August. Caturdaśī runs from 17:14 on Tue 1 Aug to 19:39 on Wed 2 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/shivaratri?on=1978-08-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25795, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1978-08-06T02:11:31-03:00", "utc": "1978-08-06T05:11:31Z", "ms": 271228291325.5372 }, "end": { "local": "1978-08-07T03:51:24-03:00", "utc": "1978-08-07T06:51:24Z", "ms": 271320683625.58447 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1978-08-06T02:11:31-03:00", "utc": "1978-08-06T05:11:31Z", "ms": 271228291325.5372 }, "end": { "local": "1978-08-07T03:51:24-03:00", "utc": "1978-08-07T06:51:24Z", "ms": 271320683625.58447 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-08-06", "window": { "start": { "local": "1978-08-06T11:01:25-03:00", "utc": "1978-08-06T14:01:25Z", "ms": 271260085264.08893 }, "end": { "local": "1978-08-06T11:49:25-03:00", "utc": "1978-08-06T14:49:25Z", "ms": 271262965264.08893 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-08-07", "window": { "start": { "local": "1978-08-07T11:01:18-03:00", "utc": "1978-08-07T14:01:18Z", "ms": 271346478475.6911 }, "end": { "local": "1978-08-07T11:49:18-03:00", "utc": "1978-08-07T14:49:18Z", "ms": 271349358475.6911 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 02:12 on Sun 6 Aug to 03:51 on Mon 7 Aug.", "fact": "1978-08-06T05:11:31Z → 1978-08-07T06:51:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:01–11:49 on the 6th, 11:01–11:49 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 25795 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Recife, 1978: Sunday 6 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": "1978-08-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-06", "confidence": "determinate" } ], "quote": "In Recife, Madhusravā Tṛtīyā (Hariyali Teej) 1978 falls on Sunday 6 August. Tṛtīyā runs from 02:12 on Sun 6 Aug to 03:51 on Mon 7 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/vinayaka-chaturthi?on=1978-08-07", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21247, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-08-07T03:51:24-03:00", "utc": "1978-08-07T06:51:24Z", "ms": 271320683625.58447 }, "end": { "local": "1978-08-08T05:07:04-03:00", "utc": "1978-08-08T08:07:04Z", "ms": 271411624397.272 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1978-08-07T03:51:24-03:00", "utc": "1978-08-07T06:51:24Z", "ms": 271320683625.58447 }, "end": { "local": "1978-08-08T05:07:04-03:00", "utc": "1978-08-08T08:07:04Z", "ms": 271411624397.272 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-08-07", "window": { "start": { "local": "1978-08-07T11:01:18-03:00", "utc": "1978-08-07T14:01:18Z", "ms": 271346478475.6911 }, "end": { "local": "1978-08-07T11:49:18-03:00", "utc": "1978-08-07T14:49:18Z", "ms": 271349358475.6911 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-08-08", "window": { "start": { "local": "1978-08-08T11:01:11-03:00", "utc": "1978-08-08T14:01:11Z", "ms": 271432871083.96045 }, "end": { "local": "1978-08-08T11:49:11-03:00", "utc": "1978-08-08T14:49:11Z", "ms": 271435751083.96045 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:51 on Mon 7 Aug to 05:07 on Tue 8 Aug.", "fact": "1978-08-07T06:51:24Z → 1978-08-08T08:07:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:01–11:49 on the 7th, 11:01–11:49 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21247 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Recife, 1978: Monday 7 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": "1978-08-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-07", "confidence": "determinate" } ], "quote": "In Recife, Vināyaka Caturthī 1978 falls on Monday 7 August. Caturthī runs from 03:51 on Mon 7 Aug to 05:07 on Tue 8 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/vinayaka-chaturthi?on=1978-08-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18490, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1978-08-08T05:07:04-03:00", "utc": "1978-08-08T08:07:04Z", "ms": 271411624397.272 }, "end": { "local": "1978-08-09T05:52:53-03:00", "utc": "1978-08-09T08:52:53Z", "ms": 271500773499.4641 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1978-08-08T05:07:04-03:00", "utc": "1978-08-08T08:07:04Z", "ms": 271411624397.272 }, "end": { "local": "1978-08-09T05:52:53-03:00", "utc": "1978-08-09T08:52:53Z", "ms": 271500773499.4641 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-08-08", "window": { "start": { "local": "1978-08-08T11:01:11-03:00", "utc": "1978-08-08T14:01:11Z", "ms": 271432871083.96045 }, "end": { "local": "1978-08-08T11:49:11-03:00", "utc": "1978-08-08T14:49:11Z", "ms": 271435751083.96045 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-08-09", "window": { "start": { "local": "1978-08-09T11:01:03-03:00", "utc": "1978-08-09T14:01:03Z", "ms": 271519263091.45703 }, "end": { "local": "1978-08-09T11:49:03-03:00", "utc": "1978-08-09T14:49:03Z", "ms": 271522143091.45703 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:07 on Tue 8 Aug to 05:53 on Wed 9 Aug.", "fact": "1978-08-08T08:07:04Z → 1978-08-09T08:52:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:01–11:49 on the 8th, 11:01–11:49 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: paraviddha → only-day · margin 18490 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Recife, 1978: Tuesday 8 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": "1978-08-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-08", "confidence": "determinate" } ], "quote": "In Recife, Nāga Pañcamī 1978 falls on Tuesday 8 August. Pañcamī runs from 05:07 on Tue 8 Aug to 05:53 on Wed 9 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-08-14", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18934, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-08-14T00:13:46-03:00", "utc": "1978-08-14T03:13:46Z", "ms": 271912425615.4865 }, "end": { "local": "1978-08-14T21:18:05-03:00", "utc": "1978-08-15T00:18:05Z", "ms": 271988285419.09244 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1978-08-14T00:13:46-03:00", "utc": "1978-08-14T03:13:46Z", "ms": 271912425615.4865 }, "end": { "local": "1978-08-14T21:18:05-03:00", "utc": "1978-08-15T00:18:05Z", "ms": 271988285419.09244 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-08-14", "window": { "start": { "local": "1978-08-14T05:29:20-03:00", "utc": "1978-08-14T08:29:20Z", "ms": 271931359683.90393 }, "end": { "local": "1978-08-14T05:29:20-03:00", "utc": "1978-08-14T08:29:20Z", "ms": 271931359683.90393 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-08-15", "window": { "start": { "local": "1978-08-15T05:28:57-03:00", "utc": "1978-08-15T08:28:57Z", "ms": 272017737401.63065 }, "end": { "local": "1978-08-15T05:28:57-03:00", "utc": "1978-08-15T08:28:57Z", "ms": 272017737401.63065 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:14 on Mon 14 Aug to 21:18 on Mon 14 Aug.", "fact": "1978-08-14T03:13:46Z → 1978-08-15T00:18:05Z" }, { "step": "kaala", "text": "Sunrise is at 05:29 on the 14th and 05:29 on the 15th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 14th and is not on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18934 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Recife, 1978: Monday 14 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": "1978-08-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-14", "confidence": "determinate" } ], "quote": "In Recife, Putradā Ekādaśī 1978 falls on Monday 14 August. Ekādaśī runs from 00:14 on Mon 14 Aug to 21:18 on Mon 14 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-08-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22263, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1978-08-14T21:18:05-03:00", "utc": "1978-08-15T00:18:05Z", "ms": 271988285419.09244 }, "end": { "local": "1978-08-15T17:59:06-03:00", "utc": "1978-08-15T20:59:06Z", "ms": 272062745650.47678 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1978-08-14T21:18:05-03:00", "utc": "1978-08-15T00:18:05Z", "ms": 271988285419.09244 }, "end": { "local": "1978-08-15T17:59:06-03:00", "utc": "1978-08-15T20:59:06Z", "ms": 272062745650.47678 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-08-14", "window": { "start": { "local": "1978-08-14T11:00:14-03:00", "utc": "1978-08-14T14:00:14Z", "ms": 271951214286.15836 }, "end": { "local": "1978-08-14T11:48:14-03:00", "utc": "1978-08-14T14:48:14Z", "ms": 271954094286.15836 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-08-15", "window": { "start": { "local": "1978-08-15T11:00:03-03:00", "utc": "1978-08-15T14:00:03Z", "ms": 272037602810.39227 }, "end": { "local": "1978-08-15T11:48:03-03:00", "utc": "1978-08-15T14:48:03Z", "ms": 272040482810.39227 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 21:18 on Mon 14 Aug to 17:59 on Tue 15 Aug.", "fact": "1978-08-15T00:18:05Z → 1978-08-15T20:59:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:00–11:48 on the 14th, 11:00–11:48 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: purvaviddha → only-day · margin 22263 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Recife, 1978: Tuesday 15 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": "1978-08-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-15", "confidence": "determinate" } ], "quote": "In Recife, Dāmodara Dvādaśī 1978 falls on Tuesday 15 August. Dvādaśī runs from 21:18 on Mon 14 Aug to 17:59 on Tue 15 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/pradosha-vrata?on=1978-08-15", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2397, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-08-15T17:59:06-03:00", "utc": "1978-08-15T20:59:06Z", "ms": 272062745650.47678 }, "end": { "local": "1978-08-16T14:25:35-03:00", "utc": "1978-08-16T17:25:35Z", "ms": 272136334917.24713 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1978-08-15T17:59:06-03:00", "utc": "1978-08-15T20:59:06Z", "ms": 272062745650.47678 }, "end": { "local": "1978-08-16T14:25:35-03:00", "utc": "1978-08-16T17:25:35Z", "ms": 272136334917.24713 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-08-15", "window": { "start": { "local": "1978-08-15T17:19:08-03:00", "utc": "1978-08-15T20:19:08Z", "ms": 272060348219.15393 }, "end": { "local": "1978-08-15T18:56:24-03:00", "utc": "1978-08-15T21:56:24Z", "ms": 272066183718.49915 } }, "covered_min": 57, "window_min": 97, "qualifies": true }, { "local_date": "1978-08-16", "window": { "start": { "local": "1978-08-16T17:19:07-03:00", "utc": "1978-08-16T20:19:07Z", "ms": 272146747113.18326 }, "end": { "local": "1978-08-16T18:56:20-03:00", "utc": "1978-08-16T21:56:20Z", "ms": 272152579616.59076 } }, "covered_min": 0, "window_min": 97, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:59 on Tue 15 Aug to 14:26 on Wed 16 Aug.", "fact": "1978-08-15T20:59:06Z → 1978-08-16T17:25:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:19–18:56 on the 15th, 17:19–18:56 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 57 of 97 minutes on the 15th and 0 of 97 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 2397 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Recife, 1978: Tuesday 15 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-08-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-15", "confidence": "determinate" } ], "quote": "In Recife, Śukla Pradoṣa Vrata 1978 falls on Tuesday 15 August. Trayodaśī runs from 17:59 on Tue 15 Aug to 14:26 on Wed 16 Aug and covers 57 of 97 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-08-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-17", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 6373, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-08-17T10:47:12-03:00", "utc": "1978-08-17T13:47:12Z", "ms": 272209631990.73373 }, "end": { "local": "1978-08-18T07:13:59-03:00", "utc": "1978-08-18T10:13:59Z", "ms": 272283239296.87036 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "1978-08-17T20:59:19-03:00", "utc": "1978-08-17T23:59:19Z", "ms": 272246358966.74246 }, "end": { "local": "1978-08-18T07:13:59-03:00", "utc": "1978-08-18T10:13:59Z", "ms": 272283239296.87036 } }, "kaala": "day", "days": [ { "local_date": "1978-08-17", "window": { "start": { "local": "1978-08-17T05:28:11-03:00", "utc": "1978-08-17T08:28:11Z", "ms": 272190490888.73953 }, "end": { "local": "1978-08-18T05:27:47-03:00", "utc": "1978-08-18T08:27:47Z", "ms": 272276866693.3797 } }, "covered_min": 508, "window_min": 1440, "qualifies": true }, { "local_date": "1978-08-18", "window": { "start": { "local": "1978-08-18T05:27:47-03:00", "utc": "1978-08-18T08:27:47Z", "ms": 272276866693.3797 }, "end": { "local": "1978-08-19T05:27:22-03:00", "utc": "1978-08-19T08:27:22Z", "ms": 272363241897.26773 } }, "covered_min": 106, "window_min": 1440, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:47 on Thu 17 Aug to 07:14 on Fri 18 Aug. Its second half begins at 20:59 on Thu 17 Aug.", "fact": "1978-08-17T13:47:12Z → 1978-08-18T10:13:59Z · second half from 1978-08-17T23:59:19Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:28 on the 17th, and from 05:28 on the 18th.", "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 508 of 1440 minutes on the 17th and 106 of 1440 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both days qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 6373 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Recife, 1978: Thursday 17 August.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "raksha-bandhana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "day", "priority": "unstated", "when_absent": "unstated", "half": "second" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-08-17", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-17", "confidence": "boundary" } ], "quote": "In Recife, Rakṣā Bandhana (Rakhi) 1978 falls on Thursday 17 August. The second half of Pūrṇimā runs from 20:59 on Thu 17 Aug to 07:14 on Fri 18 Aug and falls on two days: 508 minutes of it on the 17th, 106 on the 18th; the rule does not say which to take, and the day that holds more of it is ruled: treat the date as contested.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 746, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-08-17T10:47:12-03:00", "utc": "1978-08-17T13:47:12Z", "ms": 272209631990.73373 }, "end": { "local": "1978-08-18T07:13:59-03:00", "utc": "1978-08-18T10:13:59Z", "ms": 272283239296.87036 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1978-08-17T10:47:12-03:00", "utc": "1978-08-17T13:47:12Z", "ms": 272209631990.73373 }, "end": { "local": "1978-08-18T07:13:59-03:00", "utc": "1978-08-18T10:13:59Z", "ms": 272283239296.87036 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-08-17", "window": { "start": { "local": "1978-08-17T10:59:38-03:00", "utc": "1978-08-17T13:59:38Z", "ms": 272210378235.474 }, "end": { "local": "1978-08-17T11:47:38-03:00", "utc": "1978-08-17T14:47:38Z", "ms": 272213258235.474 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-08-18", "window": { "start": { "local": "1978-08-18T10:59:25-03:00", "utc": "1978-08-18T13:59:25Z", "ms": 272296765166.33023 }, "end": { "local": "1978-08-18T11:47:25-03:00", "utc": "1978-08-18T14:47:25Z", "ms": 272299645166.33023 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:47 on Thu 17 Aug to 07:14 on Fri 18 Aug.", "fact": "1978-08-17T13:47:12Z → 1978-08-18T10:13:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:00–11:48 on the 17th, 10:59–11:47 on the 18th.", "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 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 746 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Recife, 1978: Thursday 17 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": "1978-08-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-17", "confidence": "determinate" } ], "quote": "In Recife, Ṛṣi Tarpaṇa 1978 falls on Thursday 17 August. Pūrṇimā runs from 10:47 on Thu 17 Aug to 07:14 on Fri 18 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23085, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1978-08-19T03:55:58-03:00", "utc": "1978-08-19T06:55:58Z", "ms": 272357758180.45053 }, "end": { "local": "1978-08-20T01:02:43-03:00", "utc": "1978-08-20T04:02:43Z", "ms": 272433763221.83154 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-08-19T03:55:58-03:00", "utc": "1978-08-19T06:55:58Z", "ms": 272357758180.45053 }, "end": { "local": "1978-08-20T01:02:43-03:00", "utc": "1978-08-20T04:02:43Z", "ms": 272433763221.83154 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-08-18", "window": { "start": { "local": "1978-08-18T17:40:23-03:00", "utc": "1978-08-18T20:40:23Z", "ms": 272320823221.4123 }, "end": { "local": "1978-08-18T17:40:23-03:00", "utc": "1978-08-18T20:40:23Z", "ms": 272320823221.4123 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-08-19", "window": { "start": { "local": "1978-08-19T18:37:58-03:00", "utc": "1978-08-19T21:37:58Z", "ms": 272410678085.5883 }, "end": { "local": "1978-08-19T18:37:58-03:00", "utc": "1978-08-19T21:37:58Z", "ms": 272410678085.5883 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 03:56 on Sat 19 Aug to 01:03 on Sun 20 Aug.", "fact": "1978-08-19T06:55:58Z → 1978-08-20T04:02:43Z" }, { "step": "kaala", "text": "Moonrise is at 17:40 on the 18th and 18:38 on the 19th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 18th and is on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23085 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Recife, 1978: Saturday 19 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ashunya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 2 Asunyasayana vrata (Dvitiya current at moonrise; if occurs on two successive days, it is to be observed on the second day)." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-08-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-19", "confidence": "determinate" } ], "quote": "In Recife, Aśūnya Śayana Vrata 1978 falls on Saturday 19 August. Dvitīyā runs from 03:56 on Sat 19 Aug to 01:03 on Sun 20 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35774, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1978-08-20T01:02:43-03:00", "utc": "1978-08-20T04:02:43Z", "ms": 272433763221.83154 }, "end": { "local": "1978-08-20T22:42:53-03:00", "utc": "1978-08-21T01:42:53Z", "ms": 272511772553.16772 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-08-20T01:02:43-03:00", "utc": "1978-08-20T04:02:43Z", "ms": 272433763221.83154 }, "end": { "local": "1978-08-20T22:42:53-03:00", "utc": "1978-08-21T01:42:53Z", "ms": 272511772553.16772 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-08-20", "window": { "start": { "local": "1978-08-20T10:58:58-03:00", "utc": "1978-08-20T13:58:58Z", "ms": 272469537546.5567 }, "end": { "local": "1978-08-20T11:46:58-03:00", "utc": "1978-08-20T14:46:58Z", "ms": 272472417546.5567 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-08-21", "window": { "start": { "local": "1978-08-21T10:58:43-03:00", "utc": "1978-08-21T13:58:43Z", "ms": 272555923029.29694 }, "end": { "local": "1978-08-21T11:46:43-03:00", "utc": "1978-08-21T14:46:43Z", "ms": 272558803029.29694 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 01:03 on Sun 20 Aug to 22:43 on Sun 20 Aug.", "fact": "1978-08-20T04:02:43Z → 1978-08-21T01:42:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:59–11:47 on the 20th, 10:59–11:47 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 20th and 0 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35774 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Recife, 1978: Sunday 20 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": "1978-08-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-20", "confidence": "determinate" } ], "quote": "In Recife, Kajjalī Tṛtīyā (Kajari Teej) 1978 falls on Sunday 20 August. Tṛtīyā runs from 01:03 on Sun 20 Aug to 22:43 on Sun 20 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13477, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-08-20T22:42:53-03:00", "utc": "1978-08-21T01:42:53Z", "ms": 272511772553.16772 }, "end": { "local": "1978-08-21T21:03:32-03:00", "utc": "1978-08-22T00:03:32Z", "ms": 272592212130.9719 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-08-20T22:42:53-03:00", "utc": "1978-08-21T01:42:53Z", "ms": 272511772553.16772 }, "end": { "local": "1978-08-21T21:03:32-03:00", "utc": "1978-08-22T00:03:32Z", "ms": 272592212130.9719 } }, "kaala": "sayahna", "days": [ { "local_date": "1978-08-20", "window": { "start": { "local": "1978-08-20T14:56:34-03:00", "utc": "1978-08-20T17:56:34Z", "ms": 272483794162.57214 }, "end": { "local": "1978-08-20T17:18:59-03:00", "utc": "1978-08-20T20:18:59Z", "ms": 272492338573.2491 } }, "covered_min": 0, "window_min": 142, "qualifies": false }, { "local_date": "1978-08-21", "window": { "start": { "local": "1978-08-21T14:56:26-03:00", "utc": "1978-08-21T17:56:26Z", "ms": 272570186498.5533 }, "end": { "local": "1978-08-21T17:18:55-03:00", "utc": "1978-08-21T20:18:55Z", "ms": 272578735478.05756 } }, "covered_min": 142, "window_min": 142, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:43 on Sun 20 Aug to 21:04 on Mon 21 Aug.", "fact": "1978-08-21T01:42:53Z → 1978-08-22T00:03:32Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 14:57–17:19 on the 20th, 14:56–17:19 on the 21st.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 0 of 142 minutes on the 20th and 142 of 142 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 13477 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Recife, 1978: Monday 21 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": "1978-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-21", "confidence": "determinate" } ], "quote": "In Recife, Bahulā Caturthī 1978 falls on Monday 21 August. Caturthī runs from 22:43 on Sun 20 Aug to 21:04 on Mon 21 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/sankashta-chaturthi?on=1978-08-21", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2205, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-08-20T22:42:53-03:00", "utc": "1978-08-21T01:42:53Z", "ms": 272511772553.16772 }, "end": { "local": "1978-08-21T21:03:32-03:00", "utc": "1978-08-22T00:03:32Z", "ms": 272592212130.9719 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-08-20T22:42:53-03:00", "utc": "1978-08-21T01:42:53Z", "ms": 272511772553.16772 }, "end": { "local": "1978-08-21T21:03:32-03:00", "utc": "1978-08-22T00:03:32Z", "ms": 272592212130.9719 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-08-20", "window": { "start": { "local": "1978-08-20T19:33:20-03:00", "utc": "1978-08-20T22:33:20Z", "ms": 272500399996.91937 }, "end": { "local": "1978-08-20T19:33:20-03:00", "utc": "1978-08-20T22:33:20Z", "ms": 272500399996.91937 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-08-21", "window": { "start": { "local": "1978-08-21T20:26:47-03:00", "utc": "1978-08-21T23:26:47Z", "ms": 272590007272.95712 }, "end": { "local": "1978-08-21T20:26:47-03:00", "utc": "1978-08-21T23:26:47Z", "ms": 272590007272.95712 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:43 on Sun 20 Aug to 21:04 on Mon 21 Aug.", "fact": "1978-08-21T01:42:53Z → 1978-08-22T00:03:32Z" }, { "step": "kaala", "text": "Moonrise is at 19:33 on the 20th and 20:27 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 2205 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Recife, 1978: Monday 21 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": "1978-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-21", "confidence": "determinate" } ], "quote": "In Recife, Saṅkaṣṭa Caturthī 1978 falls on Monday 21 August. Caturthī runs from 22:43 on Sun 20 Aug to 21:04 on Mon 21 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/sankashta-chaturthi?on=1978-08-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29805, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1978-08-22T20:09:35-03:00", "utc": "1978-08-22T23:09:35Z", "ms": 272675374570.75348 }, "end": { "local": "1978-08-23T20:02:58-03:00", "utc": "1978-08-23T23:02:58Z", "ms": 272761377541.68652 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-08-22T20:09:35-03:00", "utc": "1978-08-22T23:09:35Z", "ms": 272675374570.75348 }, "end": { "local": "1978-08-23T20:02:58-03:00", "utc": "1978-08-23T23:02:58Z", "ms": 272761377541.68652 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-08-22", "window": { "start": { "local": "1978-08-22T10:58:28-03:00", "utc": "1978-08-22T13:58:28Z", "ms": 272642308062.08966 }, "end": { "local": "1978-08-22T11:46:28-03:00", "utc": "1978-08-22T14:46:28Z", "ms": 272645188062.08966 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-08-23", "window": { "start": { "local": "1978-08-23T10:58:13-03:00", "utc": "1978-08-23T13:58:13Z", "ms": 272728692660.4236 }, "end": { "local": "1978-08-23T11:46:13-03:00", "utc": "1978-08-23T14:46:13Z", "ms": 272731572660.4236 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 20:10 on Tue 22 Aug to 20:03 on Wed 23 Aug.", "fact": "1978-08-22T23:09:35Z → 1978-08-23T23:02:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:58–11:46 on the 22nd, 10:58–11:46 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 22nd and 48 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29805 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Recife, 1978: Wednesday 23 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": "1978-08-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-23", "confidence": "determinate" } ], "quote": "In Recife, Hala Ṣaṣṭhī 1978 falls on Wednesday 23 August. Ṣaṣṭhī runs from 20:10 on Tue 22 Aug to 20:03 on Wed 23 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3313, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1978-08-24T20:42:12-03:00", "utc": "1978-08-24T23:42:12Z", "ms": 272850131941.9948 }, "end": { "local": "1978-08-25T22:02:13-03:00", "utc": "1978-08-26T01:02:13Z", "ms": 272941333434.27426 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-08-24T20:42:12-03:00", "utc": "1978-08-24T23:42:12Z", "ms": 272850131941.9948 }, "end": { "local": "1978-08-25T22:02:13-03:00", "utc": "1978-08-26T01:02:13Z", "ms": 272941333434.27426 } }, "kaala": "nishita", "days": [ { "local_date": "1978-08-24", "window": { "start": { "local": "1978-08-24T22:57:43-03:00", "utc": "1978-08-25T01:57:43Z", "ms": 272858262837.53876 }, "end": { "local": "1978-08-24T23:45:43-03:00", "utc": "1978-08-25T02:45:43Z", "ms": 272861142837.53876 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-08-25", "window": { "start": { "local": "1978-08-25T22:57:26-03:00", "utc": "1978-08-26T01:57:26Z", "ms": 272944646374.86093 }, "end": { "local": "1978-08-25T23:45:26-03:00", "utc": "1978-08-26T02:45:26Z", "ms": 272947526374.86093 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 20:42 on Thu 24 Aug to 22:02 on Fri 25 Aug.", "fact": "1978-08-24T23:42:12Z → 1978-08-26T01:02:13Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:58–23:46 on the 24th, 22:57–23:45 on the 25th.", "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 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 3313 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Recife, 1978: Thursday 24 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": "1978-08-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-24", "confidence": "determinate" } ], "quote": "In Recife, Janmāṣṭamī 1978 falls on Thursday 24 August. Aṣṭamī runs from 20:42 on Thu 24 Aug to 22:02 on Fri 25 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29805, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "1978-08-23T20:02:58-03:00", "utc": "1978-08-23T23:02:58Z", "ms": 272761377541.68652 }, "end": { "local": "1978-08-24T20:42:12-03:00", "utc": "1978-08-24T23:42:12Z", "ms": 272850131941.9948 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-08-23T20:02:58-03:00", "utc": "1978-08-23T23:02:58Z", "ms": 272761377541.68652 }, "end": { "local": "1978-08-24T20:42:12-03:00", "utc": "1978-08-24T23:42:12Z", "ms": 272850131941.9948 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-08-23", "window": { "start": { "local": "1978-08-23T10:58:13-03:00", "utc": "1978-08-23T13:58:13Z", "ms": 272728692660.4236 }, "end": { "local": "1978-08-23T11:46:13-03:00", "utc": "1978-08-23T14:46:13Z", "ms": 272731572660.4236 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-08-24", "window": { "start": { "local": "1978-08-24T10:57:57-03:00", "utc": "1978-08-24T13:57:57Z", "ms": 272815076839.2033 }, "end": { "local": "1978-08-24T11:45:57-03:00", "utc": "1978-08-24T14:45:57Z", "ms": 272817956839.2033 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 20:03 on Wed 23 Aug to 20:42 on Thu 24 Aug.", "fact": "1978-08-23T23:02:58Z → 1978-08-24T23:42:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:58–11:46 on the 23rd, 10:58–11:46 on the 24th.", "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 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 29805 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Recife, 1978: Thursday 24 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": "1978-08-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-24", "confidence": "determinate" } ], "quote": "In Recife, Śītalā Saptamī 1978 falls on Thursday 24 August. Saptamī runs from 20:03 on Wed 23 Aug to 20:42 on Thu 24 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-08-28", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2833, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-08-28T02:09:36-03:00", "utc": "1978-08-28T05:09:36Z", "ms": 273128976313.21118 }, "end": { "local": "1978-08-29T04:35:32-03:00", "utc": "1978-08-29T07:35:32Z", "ms": 273224132315.42996 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-08-28T02:09:36-03:00", "utc": "1978-08-28T05:09:36Z", "ms": 273128976313.21118 }, "end": { "local": "1978-08-29T04:35:32-03:00", "utc": "1978-08-29T07:35:32Z", "ms": 273224132315.42996 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-08-28", "window": { "start": { "local": "1978-08-28T05:23:15-03:00", "utc": "1978-08-28T08:23:15Z", "ms": 273140594794.46216 }, "end": { "local": "1978-08-28T05:23:15-03:00", "utc": "1978-08-28T08:23:15Z", "ms": 273140594794.46216 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-08-29", "window": { "start": { "local": "1978-08-29T05:22:45-03:00", "utc": "1978-08-29T08:22:45Z", "ms": 273226964999.53873 }, "end": { "local": "1978-08-29T05:22:45-03:00", "utc": "1978-08-29T08:22:45Z", "ms": 273226964999.53873 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:10 on Mon 28 Aug to 04:36 on Tue 29 Aug.", "fact": "1978-08-28T05:09:36Z → 1978-08-29T07:35:32Z" }, { "step": "kaala", "text": "Sunrise is at 05:23 on the 28th and 05:23 on the 29th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 28th and is not on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2833 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Recife, 1978: Monday 28 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": "1978-08-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-28", "confidence": "determinate" } ], "quote": "In Recife, Ajā Ekādaśī 1978 falls on Monday 28 August. Ekādaśī runs from 02:10 on Mon 28 Aug to 04:36 on Tue 29 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-08-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-08-30", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28640, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-08-30T07:02:11-03:00", "utc": "1978-08-30T10:02:11Z", "ms": 273319331348.94827 }, "end": { "local": "1978-08-31T09:20:47-03:00", "utc": "1978-08-31T12:20:47Z", "ms": 273414046850.46048 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-08-30T07:02:11-03:00", "utc": "1978-08-30T10:02:11Z", "ms": 273319331348.94827 }, "end": { "local": "1978-08-31T09:20:47-03:00", "utc": "1978-08-31T12:20:47Z", "ms": 273414046850.46048 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-08-30", "window": { "start": { "local": "1978-08-30T17:18:13-03:00", "utc": "1978-08-30T20:18:13Z", "ms": 273356292988.83694 }, "end": { "local": "1978-08-30T18:54:41-03:00", "utc": "1978-08-30T21:54:41Z", "ms": 273362081150.985 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1978-08-31", "window": { "start": { "local": "1978-08-31T17:18:07-03:00", "utc": "1978-08-31T20:18:07Z", "ms": 273442686851.22873 }, "end": { "local": "1978-08-31T18:54:32-03:00", "utc": "1978-08-31T21:54:32Z", "ms": 273448471702.76526 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:02 on Wed 30 Aug to 09:21 on Thu 31 Aug.", "fact": "1978-08-30T10:02:11Z → 1978-08-31T12:20:47Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:18–18:55 on the 30th, 17:18–18:55 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 96 of 96 minutes on the 30th and 0 of 96 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 28640 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Recife, 1978: Wednesday 30 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-08-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-30", "confidence": "determinate" } ], "quote": "In Recife, Kṛṣṇa Pradoṣa Vrata 1978 falls on Wednesday 30 August. Trayodaśī runs from 07:02 on Wed 30 Aug to 09:21 on Thu 31 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-08-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21204, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-08-31T09:20:47-03:00", "utc": "1978-08-31T12:20:47Z", "ms": 273414046850.46048 }, "end": { "local": "1978-09-01T11:24:36-03:00", "utc": "1978-09-01T14:24:36Z", "ms": 273507876029.09912 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-08-31T09:20:47-03:00", "utc": "1978-08-31T12:20:47Z", "ms": 273414046850.46048 }, "end": { "local": "1978-09-01T11:24:36-03:00", "utc": "1978-09-01T14:24:36Z", "ms": 273507876029.09912 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-08-31", "window": { "start": { "local": "1978-08-31T17:18:07-03:00", "utc": "1978-08-31T20:18:07Z", "ms": 273442686851.22873 }, "end": { "local": "1978-08-31T18:54:32-03:00", "utc": "1978-08-31T21:54:32Z", "ms": 273448471702.76526 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1978-09-01", "window": { "start": { "local": "1978-09-01T17:18:00-03:00", "utc": "1978-09-01T20:18:00Z", "ms": 273529080471.68646 }, "end": { "local": "1978-09-01T18:54:22-03:00", "utc": "1978-09-01T21:54:22Z", "ms": 273534861997.09833 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:21 on Thu 31 Aug to 11:25 on Fri 1 Sep.", "fact": "1978-08-31T12:20:47Z → 1978-09-01T14:24:36Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:18–18:55 on the 31st, 17:18–18:54 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 96 of 96 minutes on the 31st and 0 of 96 on the 1st.", "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 21204 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Recife, 1978: Thursday 31 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aghora-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Aghora caturdasi (pradosa vyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-08-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-31", "confidence": "determinate" } ], "quote": "In Recife, Aghora Caturdaśī 1978 falls on Thursday 31 August. Caturdaśī runs from 09:21 on Thu 31 Aug to 11:25 on Fri 1 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/shivaratri?on=1978-08-31", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-08-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34608, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-08-31T09:20:47-03:00", "utc": "1978-08-31T12:20:47Z", "ms": 273414046850.46048 }, "end": { "local": "1978-09-01T11:24:36-03:00", "utc": "1978-09-01T14:24:36Z", "ms": 273507876029.09912 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-08-31T09:20:47-03:00", "utc": "1978-08-31T12:20:47Z", "ms": 273414046850.46048 }, "end": { "local": "1978-09-01T11:24:36-03:00", "utc": "1978-09-01T14:24:36Z", "ms": 273507876029.09912 } }, "kaala": "nishita", "days": [ { "local_date": "1978-08-30", "window": { "start": { "local": "1978-08-30T22:55:59-03:00", "utc": "1978-08-31T01:55:59Z", "ms": 273376558596.8921 }, "end": { "local": "1978-08-30T23:43:59-03:00", "utc": "1978-08-31T02:43:59Z", "ms": 273379438596.8921 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-08-31", "window": { "start": { "local": "1978-08-31T22:55:40-03:00", "utc": "1978-09-01T01:55:40Z", "ms": 273462940044.49075 }, "end": { "local": "1978-08-31T23:43:40-03:00", "utc": "1978-09-01T02:43:40Z", "ms": 273465820044.49075 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:21 on Thu 31 Aug to 11:25 on Fri 1 Sep.", "fact": "1978-08-31T12:20:47Z → 1978-09-01T14:24:36Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:56–23:44 on the 30th, 22:56–23:44 on the 31st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 30th and 48 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34608 s" }, { "step": "ruling", "text": "Śivarātri, Recife, 1978: Thursday 31 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": "1978-08-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-08-31", "confidence": "determinate" } ], "quote": "In Recife, Śivarātri 1978 falls on Thursday 31 August. Caturdaśī runs from 09:21 on Thu 31 Aug to 11:25 on Fri 1 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/shivaratri?on=1978-08-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5136, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1978-09-02T13:08:54-03:00", "utc": "1978-09-02T16:08:54Z", "ms": 273600533700.18982 }, "end": { "local": "1978-09-03T14:30:27-03:00", "utc": "1978-09-03T17:30:27Z", "ms": 273691826664.34488 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-09-02T13:08:54-03:00", "utc": "1978-09-02T16:08:54Z", "ms": 273600533700.18982 }, "end": { "local": "1978-09-03T14:30:27-03:00", "utc": "1978-09-03T17:30:27Z", "ms": 273691826664.34488 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-09-02", "window": { "start": { "local": "1978-09-02T10:55:18-03:00", "utc": "1978-09-02T13:55:18Z", "ms": 273592517886.76385 }, "end": { "local": "1978-09-02T11:43:18-03:00", "utc": "1978-09-02T14:43:18Z", "ms": 273595397886.76385 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-09-03", "window": { "start": { "local": "1978-09-03T10:54:59-03:00", "utc": "1978-09-03T13:54:59Z", "ms": 273678898637.84552 }, "end": { "local": "1978-09-03T11:42:59-03:00", "utc": "1978-09-03T14:42:59Z", "ms": 273681778637.84552 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 13:09 on Sat 2 Sep to 14:30 on Sun 3 Sep.", "fact": "1978-09-02T16:08:54Z → 1978-09-03T17:30:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:55–11:43 on the 2nd, 10:55–11:43 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 0 of 48 minutes on the 2nd and 48 of 48 on the 3rd.", "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 5136 s" }, { "step": "ruling", "text": "Rudra Vrata, Recife, 1978: Sunday 3 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": "1978-09-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-03", "confidence": "determinate" } ], "quote": "In Recife, Rudra Vrata 1978 falls on Sunday 3 September. Pratipadā runs from 13:09 on Sat 2 Sep to 14:30 on Sun 3 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13463, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1978-09-04T15:27:03-03:00", "utc": "1978-09-04T18:27:03Z", "ms": 273781622527.6725 }, "end": { "local": "1978-09-05T15:57:04-03:00", "utc": "1978-09-05T18:57:04Z", "ms": 273869824083.08023 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-09-04T15:27:03-03:00", "utc": "1978-09-04T18:27:03Z", "ms": 273781622527.6725 }, "end": { "local": "1978-09-05T15:57:04-03:00", "utc": "1978-09-05T18:57:04Z", "ms": 273869824083.08023 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-09-04", "window": { "start": { "local": "1978-09-04T10:54:39-03:00", "utc": "1978-09-04T13:54:39Z", "ms": 273765279121.8838 }, "end": { "local": "1978-09-04T11:42:39-03:00", "utc": "1978-09-04T14:42:39Z", "ms": 273768159121.8838 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-09-05", "window": { "start": { "local": "1978-09-05T10:54:19-03:00", "utc": "1978-09-05T13:54:19Z", "ms": 273851659353.04114 }, "end": { "local": "1978-09-05T11:42:19-03:00", "utc": "1978-09-05T14:42:19Z", "ms": 273854539353.04114 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 15:27 on Mon 4 Sep to 15:57 on Tue 5 Sep.", "fact": "1978-09-04T18:27:03Z → 1978-09-05T18:57:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:55–11:43 on the 4th, 10:54–11:42 on the 5th.", "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 4th and 48 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: paraviddha → only-day · margin 13463 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Recife, 1978: Tuesday 5 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": "1978-09-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-05", "confidence": "determinate" } ], "quote": "In Recife, Haritālikā Vrata (Hartalika Teej) 1978 falls on Tuesday 5 September. Tṛtīyā runs from 15:27 on Mon 4 Sep to 15:57 on Tue 5 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15285, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-09-05T15:57:04-03:00", "utc": "1978-09-05T18:57:04Z", "ms": 273869824083.08023 }, "end": { "local": "1978-09-06T15:59:16-03:00", "utc": "1978-09-06T18:59:16Z", "ms": 273956355638.34705 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-09-05T15:57:04-03:00", "utc": "1978-09-05T18:57:04Z", "ms": 273869824083.08023 }, "end": { "local": "1978-09-06T15:59:16-03:00", "utc": "1978-09-06T18:59:16Z", "ms": 273956355638.34705 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-09-05", "window": { "start": { "local": "1978-09-05T10:54:19-03:00", "utc": "1978-09-05T13:54:19Z", "ms": 273851659353.04114 }, "end": { "local": "1978-09-05T11:42:19-03:00", "utc": "1978-09-05T14:42:19Z", "ms": 273854539353.04114 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-09-06", "window": { "start": { "local": "1978-09-06T10:53:59-03:00", "utc": "1978-09-06T13:53:59Z", "ms": 273938039345.84418 }, "end": { "local": "1978-09-06T11:41:59-03:00", "utc": "1978-09-06T14:41:59Z", "ms": 273940919345.84418 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:57 on Tue 5 Sep to 15:59 on Wed 6 Sep.", "fact": "1978-09-05T18:57:04Z → 1978-09-06T18:59:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:54–11:42 on the 5th, 10:54–11:42 on the 6th.", "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 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 15285 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Recife, 1978: Wednesday 6 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": "1978-09-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-06", "confidence": "determinate" } ], "quote": "In Recife, Gaṇeśa Caturthī 1978 falls on Wednesday 6 September. Caturthī runs from 15:57 on Tue 5 Sep to 15:59 on Wed 6 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13864, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1978-09-06T15:59:16-03:00", "utc": "1978-09-06T18:59:16Z", "ms": 273956355638.34705 }, "end": { "local": "1978-09-07T15:32:43-03:00", "utc": "1978-09-07T18:32:43Z", "ms": 274041162816.26486 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-09-06T15:59:16-03:00", "utc": "1978-09-06T18:59:16Z", "ms": 273956355638.34705 }, "end": { "local": "1978-09-07T15:32:43-03:00", "utc": "1978-09-07T18:32:43Z", "ms": 274041162816.26486 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-09-06", "window": { "start": { "local": "1978-09-06T10:53:59-03:00", "utc": "1978-09-06T13:53:59Z", "ms": 273938039345.84418 }, "end": { "local": "1978-09-06T11:41:59-03:00", "utc": "1978-09-06T14:41:59Z", "ms": 273940919345.84418 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-09-07", "window": { "start": { "local": "1978-09-07T10:53:39-03:00", "utc": "1978-09-07T13:53:39Z", "ms": 274024419115.31744 }, "end": { "local": "1978-09-07T11:41:39-03:00", "utc": "1978-09-07T14:41:39Z", "ms": 274027299115.31744 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 15:59 on Wed 6 Sep to 15:33 on Thu 7 Sep.", "fact": "1978-09-06T18:59:16Z → 1978-09-07T18:32:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:54–11:42 on the 6th, 10:54–11:42 on the 7th.", "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 6th and 48 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: disputed → only-day · margin 13864 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Recife, 1978: Thursday 7 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": "1978-09-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-07", "confidence": "determinate" } ], "quote": "In Recife, Ṛṣi Pañcamī 1978 falls on Thursday 7 September. Pañcamī runs from 15:59 on Wed 6 Sep to 15:33 on Thu 7 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10545, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1978-09-07T15:32:43-03:00", "utc": "1978-09-07T18:32:43Z", "ms": 274041162816.26486 }, "end": { "local": "1978-09-08T14:37:03-03:00", "utc": "1978-09-08T17:37:03Z", "ms": 274124223266.21436 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-09-07T15:32:43-03:00", "utc": "1978-09-07T18:32:43Z", "ms": 274041162816.26486 }, "end": { "local": "1978-09-08T14:37:03-03:00", "utc": "1978-09-08T17:37:03Z", "ms": 274124223266.21436 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-09-07", "window": { "start": { "local": "1978-09-07T10:53:39-03:00", "utc": "1978-09-07T13:53:39Z", "ms": 274024419115.31744 }, "end": { "local": "1978-09-07T11:41:39-03:00", "utc": "1978-09-07T14:41:39Z", "ms": 274027299115.31744 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-09-08", "window": { "start": { "local": "1978-09-08T10:53:19-03:00", "utc": "1978-09-08T13:53:19Z", "ms": 274110798677.13022 }, "end": { "local": "1978-09-08T11:41:19-03:00", "utc": "1978-09-08T14:41:19Z", "ms": 274113678677.13022 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 15:33 on Thu 7 Sep to 14:37 on Fri 8 Sep.", "fact": "1978-09-07T18:32:43Z → 1978-09-08T17:37:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:54–11:42 on the 7th, 10:53–11:41 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10545 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Recife, 1978: Friday 8 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": "1978-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-08", "confidence": "determinate" } ], "quote": "In Recife, Sūrya Ṣaṣṭhī (Bhādrapada) 1978 falls on Friday 8 September. Ṣaṣṭhī runs from 15:33 on Thu 7 Sep to 14:37 on Fri 8 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5505, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1978-09-08T14:37:03-03:00", "utc": "1978-09-08T17:37:03Z", "ms": 274124223266.21436 }, "end": { "local": "1978-09-09T13:12:43-03:00", "utc": "1978-09-09T16:12:43Z", "ms": 274205563036.61472 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-09-08T14:37:03-03:00", "utc": "1978-09-08T17:37:03Z", "ms": 274124223266.21436 }, "end": { "local": "1978-09-09T13:12:43-03:00", "utc": "1978-09-09T16:12:43Z", "ms": 274205563036.61472 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-09-08", "window": { "start": { "local": "1978-09-08T10:53:19-03:00", "utc": "1978-09-08T13:53:19Z", "ms": 274110798677.13022 }, "end": { "local": "1978-09-08T11:41:19-03:00", "utc": "1978-09-08T14:41:19Z", "ms": 274113678677.13022 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-09-09", "window": { "start": { "local": "1978-09-09T10:52:58-03:00", "utc": "1978-09-09T13:52:58Z", "ms": 274197178047.75165 }, "end": { "local": "1978-09-09T11:40:58-03:00", "utc": "1978-09-09T14:40:58Z", "ms": 274200058047.75165 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 14:37 on Fri 8 Sep to 13:13 on Sat 9 Sep.", "fact": "1978-09-08T17:37:03Z → 1978-09-09T16:12:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:53–11:41 on the 8th, 10:53–11:41 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 8th and 48 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 5505 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Recife, 1978: Saturday 9 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": "1978-09-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-09", "confidence": "determinate" } ], "quote": "In Recife, Muktābharaṇa Vrata 1978 falls on Saturday 9 September. Saptamī runs from 14:37 on Fri 8 Sep to 13:13 on Sat 9 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1165, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1978-09-09T13:12:43-03:00", "utc": "1978-09-09T16:12:43Z", "ms": 274205563036.61472 }, "end": { "local": "1978-09-10T11:21:13-03:00", "utc": "1978-09-10T14:21:13Z", "ms": 274285272581.71692 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-09-09T13:12:43-03:00", "utc": "1978-09-09T16:12:43Z", "ms": 274205563036.61472 }, "end": { "local": "1978-09-10T11:21:13-03:00", "utc": "1978-09-10T14:21:13Z", "ms": 274285272581.71692 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-09-09", "window": { "start": { "local": "1978-09-09T10:52:58-03:00", "utc": "1978-09-09T13:52:58Z", "ms": 274197178047.75165 }, "end": { "local": "1978-09-09T11:40:58-03:00", "utc": "1978-09-09T14:40:58Z", "ms": 274200058047.75165 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-09-10", "window": { "start": { "local": "1978-09-10T10:52:37-03:00", "utc": "1978-09-10T13:52:37Z", "ms": 274283557244.6123 }, "end": { "local": "1978-09-10T11:40:37-03:00", "utc": "1978-09-10T14:40:37Z", "ms": 274286437244.6123 } }, "covered_min": 29, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 13:13 on Sat 9 Sep to 11:21 on Sun 10 Sep.", "fact": "1978-09-09T16:12:43Z → 1978-09-10T14:21:13Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:53–11:41 on the 9th, 10:53–11:41 on the 10th.", "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 9th and 29 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: unstated → only-day · margin 1165 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Recife, 1978: Sunday 10 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": "1978-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-10", "confidence": "determinate" } ], "quote": "In Recife, Rādhāṣṭamī 1978 falls on Sunday 10 September. Aṣṭamī runs from 13:13 on Sat 9 Sep to 11:21 on Sun 10 Sep and covers 29 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-09-12", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4429, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-09-12T06:29:02-03:00", "utc": "1978-09-12T09:29:02Z", "ms": 274440542095.50046 }, "end": { "local": "1978-09-13T03:37:45-03:00", "utc": "1978-09-13T06:37:45Z", "ms": 274516664536.16705 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-09-12T06:29:02-03:00", "utc": "1978-09-12T09:29:02Z", "ms": 274440542095.50046 }, "end": { "local": "1978-09-13T03:37:45-03:00", "utc": "1978-09-13T06:37:45Z", "ms": 274516664536.16705 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-09-12", "window": { "start": { "local": "1978-09-12T05:15:13-03:00", "utc": "1978-09-12T08:15:13Z", "ms": 274436112617.32904 }, "end": { "local": "1978-09-12T05:15:13-03:00", "utc": "1978-09-12T08:15:13Z", "ms": 274436112617.32904 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-09-13", "window": { "start": { "local": "1978-09-13T05:14:38-03:00", "utc": "1978-09-13T08:14:38Z", "ms": 274522478490.08926 }, "end": { "local": "1978-09-13T05:14:38-03:00", "utc": "1978-09-13T08:14:38Z", "ms": 274522478490.08926 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:29 on Tue 12 Sep to 03:38 on Wed 13 Sep.", "fact": "1978-09-12T09:29:02Z → 1978-09-13T06:37:45Z" }, { "step": "kaala", "text": "Sunrise is at 05:15 on the 12th and 05:15 on the 13th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 12th and is not on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 4429 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Recife, 1978: Tuesday 12 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-12", "confidence": "determinate" } ], "quote": "In Recife, Parivartanī Ekādaśī 1978 falls on Tuesday 12 September. Ekādaśī runs from 06:29 on Tue 12 Sep to 03:38 on Wed 13 Sep, and is current at sunrise on neither day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-09-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26029, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1978-09-13T03:37:45-03:00", "utc": "1978-09-13T06:37:45Z", "ms": 274516664536.16705 }, "end": { "local": "1978-09-14T00:37:48-03:00", "utc": "1978-09-14T03:37:48Z", "ms": 274592267747.61972 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-09-13T03:37:45-03:00", "utc": "1978-09-13T06:37:45Z", "ms": 274516664536.16705 }, "end": { "local": "1978-09-14T00:37:48-03:00", "utc": "1978-09-14T03:37:48Z", "ms": 274592267747.61972 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-09-13", "window": { "start": { "local": "1978-09-13T10:51:34-03:00", "utc": "1978-09-13T13:51:34Z", "ms": 274542693984.50983 }, "end": { "local": "1978-09-13T11:39:34-03:00", "utc": "1978-09-13T14:39:34Z", "ms": 274545573984.50983 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-09-14", "window": { "start": { "local": "1978-09-14T10:51:13-03:00", "utc": "1978-09-14T13:51:13Z", "ms": 274629072684.71933 }, "end": { "local": "1978-09-14T11:39:13-03:00", "utc": "1978-09-14T14:39:13Z", "ms": 274631952684.71933 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 03:38 on Wed 13 Sep to 00:38 on Thu 14 Sep.", "fact": "1978-09-13T06:37:45Z → 1978-09-14T03:37:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:52–11:40 on the 13th, 10:51–11:39 on the 14th.", "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 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26029 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Recife, 1978: Wednesday 13 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": "1978-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-13", "confidence": "determinate" } ], "quote": "In Recife, Vāmana Jayantī 1978 falls on Wednesday 13 September. Dvādaśī runs from 03:38 on Wed 13 Sep to 00:38 on Thu 14 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/pradosha-vrata?on=1978-09-14", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9868, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-09-14T00:37:48-03:00", "utc": "1978-09-14T03:37:48Z", "ms": 274592267747.61972 }, "end": { "local": "1978-09-14T21:36:26-03:00", "utc": "1978-09-15T00:36:26Z", "ms": 274667785837.7581 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-09-14T00:37:48-03:00", "utc": "1978-09-14T03:37:48Z", "ms": 274592267747.61972 }, "end": { "local": "1978-09-14T21:36:26-03:00", "utc": "1978-09-15T00:36:26Z", "ms": 274667785837.7581 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-09-13", "window": { "start": { "local": "1978-09-13T17:16:29-03:00", "utc": "1978-09-13T20:16:29Z", "ms": 274565789478.9304 }, "end": { "local": "1978-09-13T18:52:10-03:00", "utc": "1978-09-13T21:52:10Z", "ms": 274571530112.5204 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "1978-09-14", "window": { "start": { "local": "1978-09-14T17:16:21-03:00", "utc": "1978-09-14T20:16:21Z", "ms": 274652181138.5834 }, "end": { "local": "1978-09-14T18:51:58-03:00", "utc": "1978-09-14T21:51:58Z", "ms": 274657918302.07153 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:38 on Thu 14 Sep to 21:36 on Thu 14 Sep.", "fact": "1978-09-14T03:37:48Z → 1978-09-15T00:36:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:16–18:52 on the 13th, 17:16–18:52 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 96 minutes on the 13th and 96 of 96 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 9868 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Recife, 1978: Thursday 14 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-09-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-14", "confidence": "determinate" } ], "quote": "In Recife, Śukla Pradoṣa Vrata 1978 falls on Thursday 14 September. Trayodaśī runs from 00:38 on Thu 14 Sep to 21:36 on Thu 14 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-09-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27424, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-09-14T21:36:26-03:00", "utc": "1978-09-15T00:36:26Z", "ms": 274667785837.7581 }, "end": { "local": "1978-09-15T18:41:29-03:00", "utc": "1978-09-15T21:41:29Z", "ms": 274743688841.7156 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1978-09-14T21:36:26-03:00", "utc": "1978-09-15T00:36:26Z", "ms": 274667785837.7581 }, "end": { "local": "1978-09-15T18:41:29-03:00", "utc": "1978-09-15T21:41:29Z", "ms": 274743688841.7156 } }, "kaala": "udaya-3", "days": [ { "local_date": "1978-09-15", "window": { "start": { "local": "1978-09-15T05:13:30-03:00", "utc": "1978-09-15T08:13:30Z", "ms": 274695209864.74426 }, "end": { "local": "1978-09-15T07:38:02-03:00", "utc": "1978-09-15T10:38:02Z", "ms": 274703882445.54672 } }, "covered_min": 145, "window_min": 145, "qualifies": true }, { "local_date": "1978-09-16", "window": { "start": { "local": "1978-09-16T05:12:55-03:00", "utc": "1978-09-16T08:12:55Z", "ms": 274781575417.70193 }, "end": { "local": "1978-09-16T07:37:33-03:00", "utc": "1978-09-16T10:37:33Z", "ms": 274790253212.63336 } }, "covered_min": 0, "window_min": 145, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:36 on Thu 14 Sep to 18:41 on Fri 15 Sep.", "fact": "1978-09-15T00:36:26Z → 1978-09-15T21:41:29Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:13–07:38 on the 15th, 05:13–07:38 on the 16th.", "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 145 of 145 minutes on the 15th and 0 of 145 on the 16th.", "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 27424 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Recife, 1978: Friday 15 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": "1978-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-15", "confidence": "determinate" } ], "quote": "In Recife, Ananta Caturdaśī 1978 falls on Friday 15 September. Caturdaśī runs from 21:36 on Thu 14 Sep to 18:41 on Fri 15 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/sankashta-chaturthi?on=1978-09-19", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33163, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-09-19T10:45:30-03:00", "utc": "1978-09-19T13:45:30Z", "ms": 275060729795.0271 }, "end": { "local": "1978-09-20T10:16:50-03:00", "utc": "1978-09-20T13:16:50Z", "ms": 275145409573.5981 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-09-19T10:45:30-03:00", "utc": "1978-09-19T13:45:30Z", "ms": 275060729795.0271 }, "end": { "local": "1978-09-20T10:16:50-03:00", "utc": "1978-09-20T13:16:50Z", "ms": 275145409573.5981 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-09-19", "window": { "start": { "local": "1978-09-19T19:58:13-03:00", "utc": "1978-09-19T22:58:13Z", "ms": 275093892923.07306 }, "end": { "local": "1978-09-19T19:58:13-03:00", "utc": "1978-09-19T22:58:13Z", "ms": 275093892923.07306 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-09-20", "window": { "start": { "local": "1978-09-20T20:49:50-03:00", "utc": "1978-09-20T23:49:50Z", "ms": 275183390333.6464 }, "end": { "local": "1978-09-20T20:49:50-03:00", "utc": "1978-09-20T23:49:50Z", "ms": 275183390333.6464 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:45 on Tue 19 Sep to 10:17 on Wed 20 Sep.", "fact": "1978-09-19T13:45:30Z → 1978-09-20T13:16:50Z" }, { "step": "kaala", "text": "Moonrise is at 19:58 on the 19th and 20:50 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 33163 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Recife, 1978: Tuesday 19 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": "1978-09-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-19", "confidence": "determinate" } ], "quote": "In Recife, Saṅkaṣṭa Caturthī 1978 falls on Tuesday 19 September. Caturthī runs from 10:45 on Tue 19 Sep to 10:17 on Wed 20 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/sankashta-chaturthi?on=1978-09-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39576, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1978-09-21T10:32:16-03:00", "utc": "1978-09-21T13:32:16Z", "ms": 275232735885.26556 }, "end": { "local": "1978-09-22T11:30:46-03:00", "utc": "1978-09-22T14:30:46Z", "ms": 275322646154.77747 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-09-21T10:32:16-03:00", "utc": "1978-09-21T13:32:16Z", "ms": 275232735885.26556 }, "end": { "local": "1978-09-22T11:30:46-03:00", "utc": "1978-09-22T14:30:46Z", "ms": 275322646154.77747 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-09-21", "window": { "start": { "local": "1978-09-21T21:40:35-03:00", "utc": "1978-09-22T00:40:35Z", "ms": 275272835168.9847 }, "end": { "local": "1978-09-21T21:40:35-03:00", "utc": "1978-09-22T00:40:35Z", "ms": 275272835168.9847 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-09-22", "window": { "start": { "local": "1978-09-22T22:30:22-03:00", "utc": "1978-09-23T01:30:22Z", "ms": 275362222066.31415 }, "end": { "local": "1978-09-22T22:30:22-03:00", "utc": "1978-09-23T01:30:22Z", "ms": 275362222066.31415 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 10:32 on Thu 21 Sep to 11:31 on Fri 22 Sep.", "fact": "1978-09-21T13:32:16Z → 1978-09-22T14:30:46Z" }, { "step": "kaala", "text": "Moonrise is at 21:41 on the 21st and 22:30 on the 22nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī 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. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 39576 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Recife, 1978: Thursday 21 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": "1978-09-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-21", "confidence": "determinate" } ], "quote": "In Recife, Candra Ṣaṣṭhī 1978 falls on Thursday 21 September. Ṣaṣṭhī runs from 10:32 on Thu 21 Sep to 11:31 on Fri 22 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7286, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1978-09-23T13:07:26-03:00", "utc": "1978-09-23T16:07:26Z", "ms": 275414846167.62415 }, "end": { "local": "1978-09-24T15:13:34-03:00", "utc": "1978-09-24T18:13:34Z", "ms": 275508813757.0435 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-09-23T13:07:26-03:00", "utc": "1978-09-23T16:07:26Z", "ms": 275414846167.62415 }, "end": { "local": "1978-09-24T15:13:34-03:00", "utc": "1978-09-24T18:13:34Z", "ms": 275508813757.0435 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-09-23", "window": { "start": { "local": "1978-09-23T17:15:07-03:00", "utc": "1978-09-23T20:15:07Z", "ms": 275429707465.14636 }, "end": { "local": "1978-09-23T18:50:13-03:00", "utc": "1978-09-23T21:50:13Z", "ms": 275435413141.17786 } }, "covered_min": 95, "window_min": 95, "qualifies": true }, { "local_date": "1978-09-24", "window": { "start": { "local": "1978-09-24T17:15:00-03:00", "utc": "1978-09-24T20:15:00Z", "ms": 275516099826.725 }, "end": { "local": "1978-09-24T18:50:02-03:00", "utc": "1978-09-24T21:50:02Z", "ms": 275521801983.6874 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 13:07 on Sat 23 Sep to 15:14 on Sun 24 Sep.", "fact": "1978-09-23T16:07:26Z → 1978-09-24T18:13:34Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:15–18:50 on the 23rd, 17:15–18:50 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 95 of 95 minutes on the 23rd and 0 of 95 on the 24th.", "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 7286 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Recife, 1978: Saturday 23 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "jitashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-23", "confidence": "determinate" } ], "quote": "In Recife, Jitāṣṭamī (Jitiya) 1978 falls on Saturday 23 September. Aṣṭamī runs from 13:07 on Sat 23 Sep to 15:14 on Sun 24 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31974, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1978-09-23T13:07:26-03:00", "utc": "1978-09-23T16:07:26Z", "ms": 275414846167.62415 }, "end": { "local": "1978-09-24T15:13:34-03:00", "utc": "1978-09-24T18:13:34Z", "ms": 275508813757.0435 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-09-23T13:07:26-03:00", "utc": "1978-09-23T16:07:26Z", "ms": 275414846167.62415 }, "end": { "local": "1978-09-24T15:13:34-03:00", "utc": "1978-09-24T18:13:34Z", "ms": 275508813757.0435 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-09-23", "window": { "start": { "local": "1978-09-23T23:19:02-03:00", "utc": "1978-09-24T02:19:02Z", "ms": 275451542342.65515 }, "end": { "local": "1978-09-23T23:19:02-03:00", "utc": "1978-09-24T02:19:02Z", "ms": 275451542342.65515 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-09-24", "window": { "start": { "local": "1978-09-25T00:06:28-03:00", "utc": "1978-09-25T03:06:28Z", "ms": 275540787998.2032 }, "end": { "local": "1978-09-25T00:06:28-03:00", "utc": "1978-09-25T03:06:28Z", "ms": 275540787998.2032 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 13:07 on Sat 23 Sep to 15:14 on Sun 24 Sep.", "fact": "1978-09-23T16:07:26Z → 1978-09-24T18:13:34Z" }, { "step": "kaala", "text": "Moonrise is at 23:19 on the 23rd and 00:06 on the 24th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī 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: unstated → only-day · margin 31974 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Recife, 1978: Saturday 23 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": "1978-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-23", "confidence": "determinate" } ], "quote": "In Recife, Mahālakṣmī Vrata Samāpana 1978 falls on Saturday 23 September. Aṣṭamī runs from 13:07 on Sat 23 Sep to 15:14 on Sun 24 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-09-27", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23970, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-09-26T20:06:03-03:00", "utc": "1978-09-26T23:06:03Z", "ms": 275699163444.0725 }, "end": { "local": "1978-09-27T22:26:35-03:00", "utc": "1978-09-28T01:26:35Z", "ms": 275793995247.0223 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-09-26T20:06:03-03:00", "utc": "1978-09-26T23:06:03Z", "ms": 275699163444.0725 }, "end": { "local": "1978-09-27T22:26:35-03:00", "utc": "1978-09-28T01:26:35Z", "ms": 275793995247.0223 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-09-27", "window": { "start": { "local": "1978-09-27T05:06:38-03:00", "utc": "1978-09-27T08:06:38Z", "ms": 275731598452.14386 }, "end": { "local": "1978-09-27T05:06:38-03:00", "utc": "1978-09-27T08:06:38Z", "ms": 275731598452.14386 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-09-28", "window": { "start": { "local": "1978-09-28T05:06:05-03:00", "utc": "1978-09-28T08:06:05Z", "ms": 275817964974.5089 }, "end": { "local": "1978-09-28T05:06:05-03:00", "utc": "1978-09-28T08:06:05Z", "ms": 275817964974.5089 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:06 on Tue 26 Sep to 22:27 on Wed 27 Sep.", "fact": "1978-09-26T23:06:03Z → 1978-09-28T01:26:35Z" }, { "step": "kaala", "text": "Sunrise is at 05:07 on the 27th and 05:06 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 23970 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Recife, 1978: Wednesday 27 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-09-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-27", "confidence": "determinate" } ], "quote": "In Recife, Indirā Ekādaśī 1978 falls on Wednesday 27 September. Ekādaśī runs from 20:06 on Tue 26 Sep to 22:27 on Wed 27 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-09-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-09-29", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20343, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-09-29T00:28:22-03:00", "utc": "1978-09-29T03:28:22Z", "ms": 275887702126.01764 }, "end": { "local": "1978-09-30T02:03:44-03:00", "utc": "1978-09-30T05:03:44Z", "ms": 275979823874.5102 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-09-29T00:28:22-03:00", "utc": "1978-09-29T03:28:22Z", "ms": 275887702126.01764 }, "end": { "local": "1978-09-30T02:03:44-03:00", "utc": "1978-09-30T05:03:44Z", "ms": 275979823874.5102 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-09-28", "window": { "start": { "local": "1978-09-28T17:14:31-03:00", "utc": "1978-09-28T20:14:31Z", "ms": 275861671254.64307 }, "end": { "local": "1978-09-28T18:49:19-03:00", "utc": "1978-09-28T21:49:19Z", "ms": 275867359317.1574 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "1978-09-29", "window": { "start": { "local": "1978-09-29T17:14:25-03:00", "utc": "1978-09-29T20:14:25Z", "ms": 275948064691.7398 }, "end": { "local": "1978-09-29T18:49:09-03:00", "utc": "1978-09-29T21:49:09Z", "ms": 275953749228.7606 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:28 on Fri 29 Sep to 02:04 on Sat 30 Sep.", "fact": "1978-09-29T03:28:22Z → 1978-09-30T05:03:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:15–18:49 on the 28th, 17:14–18:49 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 95 minutes on the 28th and 95 of 95 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 20343 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Recife, 1978: Friday 29 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": "1978-09-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-29", "confidence": "determinate" } ], "quote": "In Recife, Kṛṣṇa Pradoṣa Vrata 1978 falls on Friday 29 September. Trayodaśī runs from 00:28 on Fri 29 Sep to 02:04 on Sat 30 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-09-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shivaratri?on=1978-09-30", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-09-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9002, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-09-30T02:03:44-03:00", "utc": "1978-09-30T05:03:44Z", "ms": 275979823874.5102 }, "end": { "local": "1978-10-01T03:08:18-03:00", "utc": "1978-10-01T06:08:18Z", "ms": 276070097682.953 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-09-30T02:03:44-03:00", "utc": "1978-09-30T05:03:44Z", "ms": 275979823874.5102 }, "end": { "local": "1978-10-01T03:08:18-03:00", "utc": "1978-10-01T06:08:18Z", "ms": 276070097682.953 } }, "kaala": "nishita", "days": [ { "local_date": "1978-09-29", "window": { "start": { "local": "1978-09-29T22:45:42-03:00", "utc": "1978-09-30T01:45:42Z", "ms": 275967941705.5679 }, "end": { "local": "1978-09-29T23:33:42-03:00", "utc": "1978-09-30T02:33:42Z", "ms": 275970821705.5679 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-09-30", "window": { "start": { "local": "1978-09-30T22:45:22-03:00", "utc": "1978-10-01T01:45:22Z", "ms": 276054322187.56824 }, "end": { "local": "1978-09-30T23:33:22-03:00", "utc": "1978-10-01T02:33:22Z", "ms": 276057202187.56824 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:04 on Sat 30 Sep to 03:08 on Sun 1 Oct.", "fact": "1978-09-30T05:03:44Z → 1978-10-01T06:08:18Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:46–23:34 on the 29th, 22:45–23:33 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 48 of 48 on the 30th.", "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 9002 s" }, { "step": "ruling", "text": "Śivarātri, Recife, 1978: Saturday 30 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": "1978-09-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-09-30", "confidence": "determinate" } ], "quote": "In Recife, Śivarātri 1978 falls on Saturday 30 September. Caturdaśī runs from 02:04 on Sat 30 Sep to 03:08 on Sun 1 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/shivaratri?on=1978-09-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31283, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1978-10-01T03:08:18-03:00", "utc": "1978-10-01T06:08:18Z", "ms": 276070097682.953 }, "end": { "local": "1978-10-02T03:40:38-03:00", "utc": "1978-10-02T06:40:38Z", "ms": 276158438374.4601 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-10-01T03:08:18-03:00", "utc": "1978-10-01T06:08:18Z", "ms": 276070097682.953 }, "end": { "local": "1978-10-02T03:40:38-03:00", "utc": "1978-10-02T06:40:38Z", "ms": 276158438374.4601 } }, "kaala": "aparahna", "days": [ { "local_date": "1978-10-01", "window": { "start": { "local": "1978-10-01T12:22:18-03:00", "utc": "1978-10-01T15:22:18Z", "ms": 276103337817.1752 }, "end": { "local": "1978-10-01T14:48:15-03:00", "utc": "1978-10-01T17:48:15Z", "ms": 276112095095.51575 } }, "covered_min": 146, "window_min": 146, "qualifies": true }, { "local_date": "1978-10-02", "window": { "start": { "local": "1978-10-02T12:22:01-03:00", "utc": "1978-10-02T15:22:01Z", "ms": 276189721401.69763 }, "end": { "local": "1978-10-02T14:48:04-03:00", "utc": "1978-10-02T17:48:04Z", "ms": 276198484025.17224 } }, "covered_min": 0, "window_min": 146, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 03:08 on Sun 1 Oct to 03:41 on Mon 2 Oct.", "fact": "1978-10-01T06:08:18Z → 1978-10-02T06:40:38Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 12:22–14:48 on the 1st, 12:22–14:48 on the 2nd.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 146 of 146 minutes on the 1st and 0 of 146 on the 2nd.", "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 31283 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Recife, 1978: Sunday 1 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": "1978-10-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-01", "confidence": "determinate" } ], "quote": "In Recife, Mahālaya Amāvāsyā 1978 falls on Sunday 1 October. Amāvasyā runs from 03:08 on Sun 1 Oct to 03:41 on Mon 2 Oct and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25382, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1978-10-02T03:40:38-03:00", "utc": "1978-10-02T06:40:38Z", "ms": 276158438374.4601 }, "end": { "local": "1978-10-03T03:41:39-03:00", "utc": "1978-10-03T06:41:39Z", "ms": 276244898838.3077 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-10-02T03:40:38-03:00", "utc": "1978-10-02T06:40:38Z", "ms": 276158438374.4601 }, "end": { "local": "1978-10-03T03:41:39-03:00", "utc": "1978-10-03T06:41:39Z", "ms": 276244898838.3077 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-10-02", "window": { "start": { "local": "1978-10-02T10:45:00-03:00", "utc": "1978-10-02T13:45:00Z", "ms": 276183900089.9603 }, "end": { "local": "1978-10-02T11:33:00-03:00", "utc": "1978-10-02T14:33:00Z", "ms": 276186780089.9603 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-10-03", "window": { "start": { "local": "1978-10-03T10:44:41-03:00", "utc": "1978-10-03T13:44:41Z", "ms": 276270281308.43396 }, "end": { "local": "1978-10-03T11:32:41-03:00", "utc": "1978-10-03T14:32:41Z", "ms": 276273161308.43396 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 03:41 on Mon 2 Oct to 03:42 on Tue 3 Oct.", "fact": "1978-10-02T06:40:38Z → 1978-10-03T06:41:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:45–11:33 on the 2nd, 10:45–11:33 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: paraviddha → only-day · margin 25382 s" }, { "step": "ruling", "text": "Navarātrārambha, Recife, 1978: Monday 2 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": "1978-10-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-02", "confidence": "determinate" } ], "quote": "In Recife, Navarātrārambha (Navratri) 1978 falls on Monday 2 October. Pratipadā runs from 03:41 on Mon 2 Oct to 03:42 on Tue 3 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/vinayaka-chaturthi?on=1978-10-05", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30229, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-10-05T02:20:15-03:00", "utc": "1978-10-05T05:20:15Z", "ms": 276412815437.1351 }, "end": { "local": "1978-10-06T01:04:48-03:00", "utc": "1978-10-06T04:04:48Z", "ms": 276494688398.4105 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-10-05T02:20:15-03:00", "utc": "1978-10-05T05:20:15Z", "ms": 276412815437.1351 }, "end": { "local": "1978-10-06T01:04:48-03:00", "utc": "1978-10-06T04:04:48Z", "ms": 276494688398.4105 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-10-05", "window": { "start": { "local": "1978-10-05T10:44:05-03:00", "utc": "1978-10-05T13:44:05Z", "ms": 276443044729.91235 }, "end": { "local": "1978-10-05T11:32:05-03:00", "utc": "1978-10-05T14:32:05Z", "ms": 276445924729.91235 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-10-06", "window": { "start": { "local": "1978-10-06T10:43:47-03:00", "utc": "1978-10-06T13:43:47Z", "ms": 276529426965.3374 }, "end": { "local": "1978-10-06T11:31:47-03:00", "utc": "1978-10-06T14:31:47Z", "ms": 276532306965.3374 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:20 on Thu 5 Oct to 01:05 on Fri 6 Oct.", "fact": "1978-10-05T05:20:15Z → 1978-10-06T04:04:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:44–11:32 on the 5th, 10:44–11:32 on the 6th.", "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 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 midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30229 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Recife, 1978: Thursday 5 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": "1978-10-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-05", "confidence": "determinate" } ], "quote": "In Recife, Vināyaka Caturthī 1978 falls on Thursday 5 October. Caturthī runs from 02:20 on Thu 5 Oct to 01:05 on Fri 6 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/vinayaka-chaturthi?on=1978-10-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26309, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1978-10-07T21:42:17-03:00", "utc": "1978-10-08T00:42:17Z", "ms": 276655336549.7329 }, "end": { "local": "1978-10-08T19:41:43-03:00", "utc": "1978-10-08T22:41:43Z", "ms": 276734502983.7475 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-10-07T21:42:17-03:00", "utc": "1978-10-08T00:42:17Z", "ms": 276655336549.7329 }, "end": { "local": "1978-10-08T19:41:43-03:00", "utc": "1978-10-08T22:41:43Z", "ms": 276734502983.7475 } }, "kaala": "udaya-1", "days": [ { "local_date": "1978-10-08", "window": { "start": { "local": "1978-10-08T05:00:46-03:00", "utc": "1978-10-08T08:00:46Z", "ms": 276681645886.9147 }, "end": { "local": "1978-10-08T05:49:37-03:00", "utc": "1978-10-08T08:49:37Z", "ms": 276684577444.4918 } }, "covered_min": 49, "window_min": 49, "qualifies": true }, { "local_date": "1978-10-09", "window": { "start": { "local": "1978-10-09T05:00:16-03:00", "utc": "1978-10-09T08:00:16Z", "ms": 276768015967.87134 }, "end": { "local": "1978-10-09T05:49:09-03:00", "utc": "1978-10-09T08:49:09Z", "ms": 276770949301.724 } }, "covered_min": 0, "window_min": 49, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 21:42 on Sat 7 Oct to 19:42 on Sun 8 Oct.", "fact": "1978-10-08T00:42:17Z → 1978-10-08T22:41:43Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 05:01–05:50 on the 8th, 05:00–05:49 on the 9th.", "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 49 of 49 minutes on the 8th and 0 of 49 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26309 s" }, { "step": "ruling", "text": "Durgā Saptamī, Recife, 1978: Sunday 8 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Durga saptami (paraviddha) — covering one muhurta from sunrise" } ], "kaala": "udaya-1", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-10-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-08", "confidence": "determinate" } ], "quote": "In Recife, Durgā Saptamī 1978 falls on Sunday 8 October. Saptamī runs from 21:42 on Sat 7 Oct to 19:42 on Sun 8 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21681, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1978-10-08T19:41:43-03:00", "utc": "1978-10-08T22:41:43Z", "ms": 276734502983.7475 }, "end": { "local": "1978-10-09T17:32:17-03:00", "utc": "1978-10-09T20:32:17Z", "ms": 276813136688.3665 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-10-08T19:41:43-03:00", "utc": "1978-10-08T22:41:43Z", "ms": 276734502983.7475 }, "end": { "local": "1978-10-09T17:32:17-03:00", "utc": "1978-10-09T20:32:17Z", "ms": 276813136688.3665 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-10-08", "window": { "start": { "local": "1978-10-08T10:43:13-03:00", "utc": "1978-10-08T13:43:13Z", "ms": 276702192568.74316 }, "end": { "local": "1978-10-08T11:31:13-03:00", "utc": "1978-10-08T14:31:13Z", "ms": 276705072568.74316 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-10-09", "window": { "start": { "local": "1978-10-09T10:42:56-03:00", "utc": "1978-10-09T13:42:56Z", "ms": 276788575971.7661 }, "end": { "local": "1978-10-09T11:30:56-03:00", "utc": "1978-10-09T14:30:56Z", "ms": 276791455971.7661 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 19:42 on Sun 8 Oct to 17:32 on Mon 9 Oct.", "fact": "1978-10-08T22:41:43Z → 1978-10-09T20:32:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:43–11:31 on the 8th, 10:43–11:31 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 48 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21681 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Recife, 1978: Monday 9 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": "1978-10-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-09", "confidence": "determinate" } ], "quote": "In Recife, Mahāṣṭamī (Durga Ashtami) 1978 falls on Monday 9 October. Aṣṭamī runs from 19:42 on Sun 8 Oct to 17:32 on Mon 9 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13573, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1978-10-09T17:32:17-03:00", "utc": "1978-10-09T20:32:17Z", "ms": 276813136688.3665 }, "end": { "local": "1978-10-10T15:16:53-03:00", "utc": "1978-10-10T18:16:53Z", "ms": 276891413121.6108 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-10-09T17:32:17-03:00", "utc": "1978-10-09T20:32:17Z", "ms": 276813136688.3665 }, "end": { "local": "1978-10-10T15:16:53-03:00", "utc": "1978-10-10T18:16:53Z", "ms": 276891413121.6108 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-10-09", "window": { "start": { "local": "1978-10-09T10:42:56-03:00", "utc": "1978-10-09T13:42:56Z", "ms": 276788575971.7661 }, "end": { "local": "1978-10-09T11:30:56-03:00", "utc": "1978-10-09T14:30:56Z", "ms": 276791455971.7661 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-10-10", "window": { "start": { "local": "1978-10-10T10:42:40-03:00", "utc": "1978-10-10T13:42:40Z", "ms": 276874959800.4273 }, "end": { "local": "1978-10-10T11:30:40-03:00", "utc": "1978-10-10T14:30:40Z", "ms": 276877839800.4273 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 17:32 on Mon 9 Oct to 15:17 on Tue 10 Oct.", "fact": "1978-10-09T20:32:17Z → 1978-10-10T18:16:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:43–11:31 on the 9th, 10:43–11:31 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 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 13573 s" }, { "step": "ruling", "text": "Mahānavamī, Recife, 1978: Tuesday 10 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": "1978-10-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-10", "confidence": "determinate" } ], "quote": "In Recife, Mahānavamī 1978 falls on Tuesday 10 October. Navamī runs from 17:32 on Mon 9 Oct to 15:17 on Tue 10 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-11", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 7000, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "1978-10-10T15:16:53-03:00", "utc": "1978-10-10T18:16:53Z", "ms": 276891413121.6108 }, "end": { "local": "1978-10-11T12:58:40-03:00", "utc": "1978-10-11T15:58:40Z", "ms": 276969519521.0079 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "conjunction", "start": { "local": "1978-10-10T15:16:53-03:00", "utc": "1978-10-10T18:16:53Z", "ms": 276891413121.6108 }, "end": { "local": "1978-10-11T11:08:36-03:00", "utc": "1978-10-11T14:08:36Z", "ms": 276962916175.14343 }, "nakshatra": { "type": "nakshatra", "index": 21, "key": "shravana", "name": "Śravaṇa", "start": { "local": "1978-10-10T12:42:18-03:00", "utc": "1978-10-10T15:42:18Z", "ms": 276882138499.87946 }, "end": { "local": "1978-10-11T11:08:36-03:00", "utc": "1978-10-11T14:08:36Z", "ms": 276962916175.14343 } } }, "kaala": "daytime", "days": [ { "local_date": "1978-10-10", "window": { "start": { "local": "1978-10-10T04:59:46-03:00", "utc": "1978-10-10T07:59:46Z", "ms": 276854386490.10364 }, "end": { "local": "1978-10-10T17:13:33-03:00", "utc": "1978-10-10T20:13:33Z", "ms": 276898413110.751 } }, "covered_min": 117, "window_min": 734, "qualifies": true }, { "local_date": "1978-10-11", "window": { "start": { "local": "1978-10-11T04:59:17-03:00", "utc": "1978-10-11T07:59:17Z", "ms": 276940757475.84094 }, "end": { "local": "1978-10-11T17:13:31-03:00", "utc": "1978-10-11T20:13:31Z", "ms": 276984810673.15247 } }, "covered_min": 369, "window_min": 734, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Daśamī runs from 15:17 on Tue 10 Oct to 12:59 on Wed 11 Oct, and Śravaṇa from 12:42 on Tue 10 Oct to 11:09 on Wed 11 Oct. They are together from 15:17 on Tue 10 Oct to 11:09 on Wed 11 Oct.", "fact": "1978-10-10T18:16:53Z → 1978-10-11T14:08:36Z" }, { "step": "kaala", "text": "The day time is sunrise to sunset: 05:00–17:14 on the 10th, 04:59–17:14 on the 11th.", "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 117 of 734 minutes on the 10th and 369 of 734 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both days qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 7000 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Recife, 1978: Wednesday 11 October.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "1978-10-11", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-11", "confidence": "boundary" } ], "quote": "In Recife, Vijayā Daśamī (Dussehra) 1978 falls on Wednesday 11 October. Daśamī runs from 15:17 on Tue 10 Oct to 12:59 on Wed 11 Oct and is with Śravaṇa in the day time that day, for 369 minutes. They are together in the day time on the previous day too, for 117 minutes; the rule does not say which to take, and the day they share longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-10-12", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20539, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-10-11T12:58:40-03:00", "utc": "1978-10-11T15:58:40Z", "ms": 276969519521.0079 }, "end": { "local": "1978-10-12T10:41:08-03:00", "utc": "1978-10-12T13:41:08Z", "ms": 277047667594.5804 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-10-11T12:58:40-03:00", "utc": "1978-10-11T15:58:40Z", "ms": 276969519521.0079 }, "end": { "local": "1978-10-12T10:41:08-03:00", "utc": "1978-10-12T13:41:08Z", "ms": 277047667594.5804 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-10-11", "window": { "start": { "local": "1978-10-11T04:59:17-03:00", "utc": "1978-10-11T07:59:17Z", "ms": 276940757475.84094 }, "end": { "local": "1978-10-11T04:59:17-03:00", "utc": "1978-10-11T07:59:17Z", "ms": 276940757475.84094 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-10-12", "window": { "start": { "local": "1978-10-12T04:58:49-03:00", "utc": "1978-10-12T07:58:49Z", "ms": 277027128948.28705 }, "end": { "local": "1978-10-12T04:58:49-03:00", "utc": "1978-10-12T07:58:49Z", "ms": 277027128948.28705 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:59 on Wed 11 Oct to 10:41 on Thu 12 Oct.", "fact": "1978-10-11T15:58:40Z → 1978-10-12T13:41:08Z" }, { "step": "kaala", "text": "Sunrise is at 04:59 on the 11th and 04:59 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 20539 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Recife, 1978: Thursday 12 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-10-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-12", "confidence": "determinate" } ], "quote": "In Recife, Pāśāṅkuśā Ekādaśī 1978 falls on Thursday 12 October. Ekādaśī runs from 12:59 on Wed 11 Oct to 10:41 on Thu 12 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-10-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-10-13", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31504, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-10-13T08:28:23-03:00", "utc": "1978-10-13T11:28:23Z", "ms": 277126103470.94995 }, "end": { "local": "1978-10-14T06:25:13-03:00", "utc": "1978-10-14T09:25:13Z", "ms": 277205112693.0177 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1978-10-13T08:28:23-03:00", "utc": "1978-10-13T11:28:23Z", "ms": 277126103470.94995 }, "end": { "local": "1978-10-14T06:25:13-03:00", "utc": "1978-10-14T09:25:13Z", "ms": 277205112693.0177 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-10-13", "window": { "start": { "local": "1978-10-13T17:13:27-03:00", "utc": "1978-10-13T20:13:27Z", "ms": 277157607153.79004 }, "end": { "local": "1978-10-13T18:47:23-03:00", "utc": "1978-10-13T21:47:23Z", "ms": 277163242659.9927 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1978-10-14", "window": { "start": { "local": "1978-10-14T17:13:26-03:00", "utc": "1978-10-14T20:13:26Z", "ms": 277244006110.7548 }, "end": { "local": "1978-10-14T18:47:18-03:00", "utc": "1978-10-14T21:47:18Z", "ms": 277249638166.6291 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:28 on Fri 13 Oct to 06:25 on Sat 14 Oct.", "fact": "1978-10-13T11:28:23Z → 1978-10-14T09:25:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:13–18:47 on the 13th, 17:13–18:47 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 94 of 94 minutes on the 13th and 0 of 94 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 31504 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Recife, 1978: Friday 13 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-10-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-13", "confidence": "determinate" } ], "quote": "In Recife, Śukla Pradoṣa Vrata 1978 falls on Friday 13 October. Trayodaśī runs from 08:28 on Fri 13 Oct to 06:25 on Sat 14 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-10-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22489, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-10-19T01:48:28-03:00", "utc": "1978-10-19T04:48:28Z", "ms": 277620508303.4534 }, "end": { "local": "1978-10-20T02:35:21-03:00", "utc": "1978-10-20T05:35:21Z", "ms": 277709721339.599 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-19T01:48:28-03:00", "utc": "1978-10-19T04:48:28Z", "ms": 277620508303.4534 }, "end": { "local": "1978-10-20T02:35:21-03:00", "utc": "1978-10-20T05:35:21Z", "ms": 277709721339.599 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-10-18", "window": { "start": { "local": "1978-10-18T19:29:28-03:00", "utc": "1978-10-18T22:29:28Z", "ms": 277597768291.91595 }, "end": { "local": "1978-10-18T19:29:28-03:00", "utc": "1978-10-18T22:29:28Z", "ms": 277597768291.91595 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-10-19", "window": { "start": { "local": "1978-10-19T20:20:33-03:00", "utc": "1978-10-19T23:20:33Z", "ms": 277687232744.295 }, "end": { "local": "1978-10-19T20:20:33-03:00", "utc": "1978-10-19T23:20:33Z", "ms": 277687232744.295 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:48 on Thu 19 Oct to 02:35 on Fri 20 Oct.", "fact": "1978-10-19T04:48:28Z → 1978-10-20T05:35:21Z" }, { "step": "kaala", "text": "Moonrise is at 19:29 on the 18th and 20:21 on the 19th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 18th and is on the 19th.", "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 22489 s" }, { "step": "ruling", "text": "Karaka Caturthī, Recife, 1978: Thursday 19 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": "1978-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-19", "confidence": "determinate" } ], "quote": "In Recife, Karaka Caturthī (Karwa Chauth) 1978 falls on Thursday 19 October. Caturthī runs from 01:48 on Thu 19 Oct to 02:35 on Fri 20 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/sankashta-chaturthi?on=1978-10-19", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22489, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-10-19T01:48:28-03:00", "utc": "1978-10-19T04:48:28Z", "ms": 277620508303.4534 }, "end": { "local": "1978-10-20T02:35:21-03:00", "utc": "1978-10-20T05:35:21Z", "ms": 277709721339.599 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-19T01:48:28-03:00", "utc": "1978-10-19T04:48:28Z", "ms": 277620508303.4534 }, "end": { "local": "1978-10-20T02:35:21-03:00", "utc": "1978-10-20T05:35:21Z", "ms": 277709721339.599 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-10-18", "window": { "start": { "local": "1978-10-18T19:29:28-03:00", "utc": "1978-10-18T22:29:28Z", "ms": 277597768291.91595 }, "end": { "local": "1978-10-18T19:29:28-03:00", "utc": "1978-10-18T22:29:28Z", "ms": 277597768291.91595 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-10-19", "window": { "start": { "local": "1978-10-19T20:20:33-03:00", "utc": "1978-10-19T23:20:33Z", "ms": 277687232744.295 }, "end": { "local": "1978-10-19T20:20:33-03:00", "utc": "1978-10-19T23:20:33Z", "ms": 277687232744.295 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:48 on Thu 19 Oct to 02:35 on Fri 20 Oct.", "fact": "1978-10-19T04:48:28Z → 1978-10-20T05:35:21Z" }, { "step": "kaala", "text": "Moonrise is at 19:29 on the 18th and 20:21 on the 19th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 18th and is on the 19th.", "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 22489 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Recife, 1978: Thursday 19 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": "1978-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-19", "confidence": "determinate" } ], "quote": "In Recife, Saṅkaṣṭa Caturthī 1978 falls on Thursday 19 October. Caturthī runs from 01:48 on Thu 19 Oct to 02:35 on Fri 20 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/sankashta-chaturthi?on=1978-10-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34337, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1978-10-23T08:18:25-03:00", "utc": "1978-10-23T11:18:25Z", "ms": 277989505327.0454 }, "end": { "local": "1978-10-24T10:50:11-03:00", "utc": "1978-10-24T13:50:11Z", "ms": 278085010950.7173 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-23T08:18:25-03:00", "utc": "1978-10-23T11:18:25Z", "ms": 277989505327.0454 }, "end": { "local": "1978-10-24T10:50:11-03:00", "utc": "1978-10-24T13:50:11Z", "ms": 278085010950.7173 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-10-22", "window": { "start": { "local": "1978-10-22T22:46:08-03:00", "utc": "1978-10-23T01:46:08Z", "ms": 277955168435.55066 }, "end": { "local": "1978-10-22T22:46:08-03:00", "utc": "1978-10-23T01:46:08Z", "ms": 277955168435.55066 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-10-23", "window": { "start": { "local": "1978-10-23T23:31:35-03:00", "utc": "1978-10-24T02:31:35Z", "ms": 278044295310.0075 }, "end": { "local": "1978-10-23T23:31:35-03:00", "utc": "1978-10-24T02:31:35Z", "ms": 278044295310.0075 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 08:18 on Mon 23 Oct to 10:50 on Tue 24 Oct.", "fact": "1978-10-23T11:18:25Z → 1978-10-24T13:50:11Z" }, { "step": "kaala", "text": "Moonrise is at 22:46 on the 22nd and 23:32 on the 23rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 22nd and is on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34337 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Recife, 1978: Monday 23 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": "1978-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-23", "confidence": "determinate" } ], "quote": "In Recife, Ahoyī Aṣṭamī 1978 falls on Monday 23 October. Aṣṭamī runs from 08:18 on Mon 23 Oct to 10:50 on Tue 24 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-10-27", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38052, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-10-26T15:27:26-03:00", "utc": "1978-10-26T18:27:26Z", "ms": 278274445828.2684 }, "end": { "local": "1978-10-27T17:06:37-03:00", "utc": "1978-10-27T20:06:37Z", "ms": 278366797094.96136 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-26T15:27:26-03:00", "utc": "1978-10-26T18:27:26Z", "ms": 278274445828.2684 }, "end": { "local": "1978-10-27T17:06:37-03:00", "utc": "1978-10-27T20:06:37Z", "ms": 278366797094.96136 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-10-26", "window": { "start": { "local": "1978-10-26T04:53:14-03:00", "utc": "1978-10-26T07:53:14Z", "ms": 278236394213.74786 }, "end": { "local": "1978-10-26T04:53:14-03:00", "utc": "1978-10-26T07:53:14Z", "ms": 278236394213.74786 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-10-27", "window": { "start": { "local": "1978-10-27T04:52:56-03:00", "utc": "1978-10-27T07:52:56Z", "ms": 278322775806.74097 }, "end": { "local": "1978-10-27T04:52:56-03:00", "utc": "1978-10-27T07:52:56Z", "ms": 278322775806.74097 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:27 on Thu 26 Oct to 17:07 on Fri 27 Oct.", "fact": "1978-10-26T18:27:26Z → 1978-10-27T20:06:37Z" }, { "step": "kaala", "text": "Sunrise is at 04:53 on the 26th and 04:53 on the 27th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 26th and is on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38052 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Recife, 1978: Friday 27 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": "1978-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-27", "confidence": "determinate" } ], "quote": "In Recife, Ramā Ekādaśī 1978 falls on Friday 27 October. Ekādaśī runs from 15:27 on Thu 26 Oct to 17:07 on Fri 27 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-10-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 448, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1978-10-27T17:06:37-03:00", "utc": "1978-10-27T20:06:37Z", "ms": 278366797094.96136 }, "end": { "local": "1978-10-28T18:07:38-03:00", "utc": "1978-10-28T21:07:38Z", "ms": 278456857775.60333 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-27T17:06:37-03:00", "utc": "1978-10-27T20:06:37Z", "ms": 278366797094.96136 }, "end": { "local": "1978-10-28T18:07:38-03:00", "utc": "1978-10-28T21:07:38Z", "ms": 278456857775.60333 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-10-27", "window": { "start": { "local": "1978-10-27T17:14:05-03:00", "utc": "1978-10-27T20:14:05Z", "ms": 278367244622.994 }, "end": { "local": "1978-10-27T18:47:13-03:00", "utc": "1978-10-27T21:47:13Z", "ms": 278372833104.3386 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "1978-10-28", "window": { "start": { "local": "1978-10-28T17:14:12-03:00", "utc": "1978-10-28T20:14:12Z", "ms": 278453652064.96027 }, "end": { "local": "1978-10-28T18:47:17-03:00", "utc": "1978-10-28T21:47:17Z", "ms": 278459237323.957 } }, "covered_min": 53, "window_min": 93, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 17:07 on Fri 27 Oct to 18:08 on Sat 28 Oct.", "fact": "1978-10-27T20:06:37Z → 1978-10-28T21:07:38Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:14–18:47 on the 27th, 17:14–18:47 on the 28th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 93 of 93 minutes on the 27th and 53 of 93 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both evenings qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 448 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Recife, 1978: Friday 27 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": "1978-10-27", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-27", "confidence": "determinate" } ], "quote": "In Recife, Govatsa Dvādaśī (Vasu Baras) 1978 falls on Friday 27 October. Dvādaśī runs from 17:07 on Fri 27 Oct to 18:08 on Sat 28 Oct and covers all of pradoṣa that evening. It also reaches the next evening for 53 minutes; by the rule the first evening is taken.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-29", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1222, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-10-28T18:07:38-03:00", "utc": "1978-10-28T21:07:38Z", "ms": 278456857775.60333 }, "end": { "local": "1978-10-29T18:27:00-03:00", "utc": "1978-10-29T21:27:00Z", "ms": 278544420079.29614 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-28T18:07:38-03:00", "utc": "1978-10-28T21:07:38Z", "ms": 278456857775.60333 }, "end": { "local": "1978-10-29T18:27:00-03:00", "utc": "1978-10-29T21:27:00Z", "ms": 278544420079.29614 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-10-28", "window": { "start": { "local": "1978-10-28T17:14:12-03:00", "utc": "1978-10-28T20:14:12Z", "ms": 278453652064.96027 }, "end": { "local": "1978-10-28T18:47:17-03:00", "utc": "1978-10-28T21:47:17Z", "ms": 278459237323.957 } }, "covered_min": 40, "window_min": 93, "qualifies": true }, { "local_date": "1978-10-29", "window": { "start": { "local": "1978-10-29T17:14:20-03:00", "utc": "1978-10-29T20:14:20Z", "ms": 278540060191.9052 }, "end": { "local": "1978-10-29T18:47:22-03:00", "utc": "1978-10-29T21:47:22Z", "ms": 278545642252.091 } }, "covered_min": 73, "window_min": 93, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:08 on Sat 28 Oct to 18:27 on Sun 29 Oct.", "fact": "1978-10-28T21:07:38Z → 1978-10-29T21:27:00Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:14–18:47 on the 28th, 17:14–18:47 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 40 of 93 minutes on the 28th and 73 of 93 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1222 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Recife, 1978: Sunday 29 October.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "1978-10-29", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-28", "confidence": "boundary" } ], "quote": "In Recife, Yama Dīpadāna 1978 falls on Sunday 29 October. Trayodaśī runs from 18:08 on Sat 28 Oct to 18:27 on Sun 29 Oct and covers 73 of 93 minutes of pradoṣa that evening. It also reaches the previous evening for 40 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/pradosha-vrata?on=1978-10-29", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-29", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1222, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-10-28T18:07:38-03:00", "utc": "1978-10-28T21:07:38Z", "ms": 278456857775.60333 }, "end": { "local": "1978-10-29T18:27:00-03:00", "utc": "1978-10-29T21:27:00Z", "ms": 278544420079.29614 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-28T18:07:38-03:00", "utc": "1978-10-28T21:07:38Z", "ms": 278456857775.60333 }, "end": { "local": "1978-10-29T18:27:00-03:00", "utc": "1978-10-29T21:27:00Z", "ms": 278544420079.29614 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-10-28", "window": { "start": { "local": "1978-10-28T17:14:12-03:00", "utc": "1978-10-28T20:14:12Z", "ms": 278453652064.96027 }, "end": { "local": "1978-10-28T18:47:17-03:00", "utc": "1978-10-28T21:47:17Z", "ms": 278459237323.957 } }, "covered_min": 40, "window_min": 93, "qualifies": true }, { "local_date": "1978-10-29", "window": { "start": { "local": "1978-10-29T17:14:20-03:00", "utc": "1978-10-29T20:14:20Z", "ms": 278540060191.9052 }, "end": { "local": "1978-10-29T18:47:22-03:00", "utc": "1978-10-29T21:47:22Z", "ms": 278545642252.091 } }, "covered_min": 73, "window_min": 93, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:08 on Sat 28 Oct to 18:27 on Sun 29 Oct.", "fact": "1978-10-28T21:07:38Z → 1978-10-29T21:27:00Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:14–18:47 on the 28th, 17:14–18:47 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 40 of 93 minutes on the 28th and 73 of 93 on the 29th.", "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 1222 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Recife, 1978: Sunday 29 October.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-10-29", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-28", "confidence": "boundary" } ], "quote": "In Recife, Kṛṣṇa Pradoṣa Vrata 1978 falls on Sunday 29 October. Trayodaśī runs from 18:08 on Sat 28 Oct to 18:27 on Sun 29 Oct and covers 73 of 93 minutes of pradoṣa that evening. It also reaches the previous evening for 40 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-10-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shivaratri?on=1978-10-29", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15133, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-10-29T18:27:00-03:00", "utc": "1978-10-29T21:27:00Z", "ms": 278544420079.29614 }, "end": { "local": "1978-10-30T18:05:21-03:00", "utc": "1978-10-30T21:05:21Z", "ms": 278629521287.70807 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-29T18:27:00-03:00", "utc": "1978-10-29T21:27:00Z", "ms": 278544420079.29614 }, "end": { "local": "1978-10-30T18:05:21-03:00", "utc": "1978-10-30T21:05:21Z", "ms": 278629521287.70807 } }, "kaala": "nishita", "days": [ { "local_date": "1978-10-29", "window": { "start": { "local": "1978-10-29T22:39:13-03:00", "utc": "1978-10-30T01:39:13Z", "ms": 278559552917.60205 }, "end": { "local": "1978-10-29T23:27:13-03:00", "utc": "1978-10-30T02:27:13Z", "ms": 278562432917.60205 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-10-30", "window": { "start": { "local": "1978-10-30T22:39:10-03:00", "utc": "1978-10-31T01:39:10Z", "ms": 278645949830.3358 }, "end": { "local": "1978-10-30T23:27:10-03:00", "utc": "1978-10-31T02:27:10Z", "ms": 278648829830.3358 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 18:27 on Sun 29 Oct to 18:05 on Mon 30 Oct.", "fact": "1978-10-29T21:27:00Z → 1978-10-30T21:05:21Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:39–23:27 on the 29th, 22:39–23:27 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 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15133 s" }, { "step": "ruling", "text": "Śivarātri, Recife, 1978: Sunday 29 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": "1978-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-29", "confidence": "determinate" } ], "quote": "In Recife, Śivarātri 1978 falls on Sunday 29 October. Caturdaśī runs from 18:27 on Sun 29 Oct to 18:05 on Mon 30 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/shivaratri?on=1978-10-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31924, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-10-29T18:27:00-03:00", "utc": "1978-10-29T21:27:00Z", "ms": 278544420079.29614 }, "end": { "local": "1978-10-30T18:05:21-03:00", "utc": "1978-10-30T21:05:21Z", "ms": 278629521287.70807 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-29T18:27:00-03:00", "utc": "1978-10-29T21:27:00Z", "ms": 278544420079.29614 }, "end": { "local": "1978-10-30T18:05:21-03:00", "utc": "1978-10-30T21:05:21Z", "ms": 278629521287.70807 } }, "kaala": "arunodaya", "days": [ { "local_date": "1978-10-30", "window": { "start": { "local": "1978-10-30T03:19:04-03:00", "utc": "1978-10-30T06:19:04Z", "ms": 278576343583.11304 }, "end": { "local": "1978-10-30T04:52:06-03:00", "utc": "1978-10-30T07:52:06Z", "ms": 278581925643.2988 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "1978-10-31", "window": { "start": { "local": "1978-10-31T03:18:52-03:00", "utc": "1978-10-31T06:18:52Z", "ms": 278662731766.89636 }, "end": { "local": "1978-10-31T04:51:51-03:00", "utc": "1978-10-31T07:51:51Z", "ms": 278668310652.9184 } }, "covered_min": 0, "window_min": 93, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 18:27 on Sun 29 Oct to 18:05 on Mon 30 Oct.", "fact": "1978-10-29T21:27:00Z → 1978-10-30T21:05:21Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 03:19–04:52 on the 30th, 03:19–04:52 on the 31st.", "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 93 of 93 minutes on the 30th and 0 of 93 on the 31st.", "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 31924 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Recife, 1978: Monday 30 October.", "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": "1978-10-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-30", "confidence": "determinate" } ], "quote": "In Recife, Naraka Caturdaśī (Choti Diwali) 1978 falls on Monday 30 October. Caturdaśī runs from 18:27 on Sun 29 Oct to 18:05 on Mon 30 Oct and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 487, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1978-10-30T18:05:21-03:00", "utc": "1978-10-30T21:05:21Z", "ms": 278629521287.70807 }, "end": { "local": "1978-10-31T17:06:31-03:00", "utc": "1978-10-31T20:06:31Z", "ms": 278712391305.6291 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-30T18:05:21-03:00", "utc": "1978-10-30T21:05:21Z", "ms": 278629521287.70807 }, "end": { "local": "1978-10-31T17:06:31-03:00", "utc": "1978-10-31T20:06:31Z", "ms": 278712391305.6291 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-10-30", "window": { "start": { "local": "1978-10-30T17:14:29-03:00", "utc": "1978-10-30T20:14:29Z", "ms": 278626469007.75323 }, "end": { "local": "1978-10-30T18:47:28-03:00", "utc": "1978-10-30T21:47:28Z", "ms": 278632047893.77527 } }, "covered_min": 42, "window_min": 93, "qualifies": true }, { "local_date": "1978-10-31", "window": { "start": { "local": "1978-10-31T17:14:39-03:00", "utc": "1978-10-31T20:14:39Z", "ms": 278712878514.9679 }, "end": { "local": "1978-10-31T18:47:34-03:00", "utc": "1978-10-31T21:47:34Z", "ms": 278718454252.61786 } }, "covered_min": 0, "window_min": 93, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 18:05 on Mon 30 Oct to 17:07 on Tue 31 Oct.", "fact": "1978-10-30T21:05:21Z → 1978-10-31T20:06:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:14–18:47 on the 30th, 17:15–18:48 on the 31st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 42 of 93 minutes on the 30th and 0 of 93 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 487 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Recife, 1978: Monday 30 October.", "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": "1978-10-30", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-30", "confidence": "determinate" } ], "quote": "In Recife, Lakṣmī Pūjā (Diwali) 1978 falls on Monday 30 October. Amāvasyā runs from 18:05 on Mon 30 Oct to 17:07 on Tue 31 Oct and covers 42 of 93 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16429, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1978-10-30T18:05:21-03:00", "utc": "1978-10-30T21:05:21Z", "ms": 278629521287.70807 }, "end": { "local": "1978-10-31T17:06:31-03:00", "utc": "1978-10-31T20:06:31Z", "ms": 278712391305.6291 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-30T18:05:21-03:00", "utc": "1978-10-30T21:05:21Z", "ms": 278629521287.70807 }, "end": { "local": "1978-10-31T17:06:31-03:00", "utc": "1978-10-31T20:06:31Z", "ms": 278712391305.6291 } }, "kaala": "nishita", "days": [ { "local_date": "1978-10-30", "window": { "start": { "local": "1978-10-30T22:39:10-03:00", "utc": "1978-10-31T01:39:10Z", "ms": 278645949830.3358 }, "end": { "local": "1978-10-30T23:27:10-03:00", "utc": "1978-10-31T02:27:10Z", "ms": 278648829830.3358 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-10-31", "window": { "start": { "local": "1978-10-31T22:39:08-03:00", "utc": "1978-11-01T01:39:08Z", "ms": 278732347531.1553 }, "end": { "local": "1978-10-31T23:27:08-03:00", "utc": "1978-11-01T02:27:08Z", "ms": 278735227531.1553 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 18:05 on Mon 30 Oct to 17:07 on Tue 31 Oct.", "fact": "1978-10-30T21:05:21Z → 1978-10-31T20:06:31Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:39–23:27 on the 30th, 22:39–23:27 on the 31st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 48 of 48 minutes on the 30th and 0 of 48 on the 31st.", "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 16429 s" }, { "step": "ruling", "text": "Kālī Pūjā, Recife, 1978: Monday 30 October.", "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": "1978-10-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-30", "confidence": "determinate" } ], "quote": "In Recife, Kālī Pūjā 1978 falls on Monday 30 October. Amāvasyā runs from 18:05 on Mon 30 Oct to 17:07 on Tue 31 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 487, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1978-10-31T17:06:31-03:00", "utc": "1978-10-31T20:06:31Z", "ms": 278712391305.6291 }, "end": { "local": "1978-11-01T15:36:31-03:00", "utc": "1978-11-01T18:36:31Z", "ms": 278793390638.82684 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-31T17:06:31-03:00", "utc": "1978-10-31T20:06:31Z", "ms": 278712391305.6291 }, "end": { "local": "1978-11-01T15:36:31-03:00", "utc": "1978-11-01T18:36:31Z", "ms": 278793390638.82684 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-10-31", "window": { "start": { "local": "1978-10-31T17:14:39-03:00", "utc": "1978-10-31T20:14:39Z", "ms": 278712878514.9679 }, "end": { "local": "1978-10-31T18:47:34-03:00", "utc": "1978-10-31T21:47:34Z", "ms": 278718454252.61786 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "1978-11-01", "window": { "start": { "local": "1978-11-01T17:14:49-03:00", "utc": "1978-11-01T20:14:49Z", "ms": 278799288714.6413 }, "end": { "local": "1978-11-01T18:47:41-03:00", "utc": "1978-11-01T21:47:41Z", "ms": 278804861330.8953 } }, "covered_min": 0, "window_min": 93, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 17:07 on Tue 31 Oct to 15:37 on Wed 1 Nov.", "fact": "1978-10-31T20:06:31Z → 1978-11-01T18:36:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:15–18:48 on the 31st, 17:15–18:48 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 93 of 93 minutes on the 31st and 0 of 93 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 487 s" }, { "step": "ruling", "text": "Bali Pūjā, Recife, 1978: Tuesday 31 October.", "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": "1978-10-31", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-10-31", "confidence": "determinate" } ], "quote": "In Recife, Bali Pūjā 1978 falls on Tuesday 31 October. Pratipadā runs from 17:07 on Tue 31 Oct to 15:37 on Wed 1 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14958, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1978-10-31T17:06:31-03:00", "utc": "1978-10-31T20:06:31Z", "ms": 278712391305.6291 }, "end": { "local": "1978-11-01T15:36:31-03:00", "utc": "1978-11-01T18:36:31Z", "ms": 278793390638.82684 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-31T17:06:31-03:00", "utc": "1978-10-31T20:06:31Z", "ms": 278712391305.6291 }, "end": { "local": "1978-11-01T15:36:31-03:00", "utc": "1978-11-01T18:36:31Z", "ms": 278793390638.82684 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-10-31", "window": { "start": { "local": "1978-10-31T10:39:15-03:00", "utc": "1978-10-31T13:39:15Z", "ms": 278689154583.9431 }, "end": { "local": "1978-10-31T11:27:15-03:00", "utc": "1978-10-31T14:27:15Z", "ms": 278692034583.9431 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-11-01", "window": { "start": { "local": "1978-11-01T10:39:13-03:00", "utc": "1978-11-01T13:39:13Z", "ms": 278775552630.992 }, "end": { "local": "1978-11-01T11:27:13-03:00", "utc": "1978-11-01T14:27:13Z", "ms": 278778432630.992 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 17:07 on Tue 31 Oct to 15:37 on Wed 1 Nov.", "fact": "1978-10-31T20:06:31Z → 1978-11-01T18:36:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:39–11:27 on the 31st, 10:39–11:27 on the 1st.", "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 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 midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 14958 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Recife, 1978: Wednesday 1 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": "1978-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-01", "confidence": "determinate" } ], "quote": "In Recife, Govardhana Pūjā 1978 falls on Wednesday 1 November. Pratipadā runs from 17:07 on Tue 31 Oct to 15:37 on Wed 1 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23830, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1978-10-31T17:06:31-03:00", "utc": "1978-10-31T20:06:31Z", "ms": 278712391305.6291 }, "end": { "local": "1978-11-01T15:36:31-03:00", "utc": "1978-11-01T18:36:31Z", "ms": 278793390638.82684 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-10-31T17:06:31-03:00", "utc": "1978-10-31T20:06:31Z", "ms": 278712391305.6291 }, "end": { "local": "1978-11-01T15:36:31-03:00", "utc": "1978-11-01T18:36:31Z", "ms": 278793390638.82684 } }, "kaala": "purvahna", "days": [ { "local_date": "1978-10-31", "window": { "start": { "local": "1978-10-31T04:51:51-03:00", "utc": "1978-10-31T07:51:51Z", "ms": 278668310652.9184 }, "end": { "local": "1978-10-31T08:59:27-03:00", "utc": "1978-10-31T11:59:27Z", "ms": 278683166606.9349 } }, "covered_min": 0, "window_min": 248, "qualifies": false }, { "local_date": "1978-11-01", "window": { "start": { "local": "1978-11-01T04:51:37-03:00", "utc": "1978-11-01T07:51:37Z", "ms": 278754696547.3427 }, "end": { "local": "1978-11-01T08:59:21-03:00", "utc": "1978-11-01T11:59:21Z", "ms": 278769560603.1089 } }, "covered_min": 248, "window_min": 248, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 17:07 on Tue 31 Oct to 15:37 on Wed 1 Nov.", "fact": "1978-10-31T20:06:31Z → 1978-11-01T18:36:31Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 04:52–08:59 on the 31st, 04:52–08:59 on the 1st.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 0 of 248 minutes on the 31st and 248 of 248 on the 1st.", "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 23830 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Recife, 1978: Wednesday 1 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": "1978-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-01", "confidence": "determinate" } ], "quote": "In Recife, Dyūta Pratipad 1978 falls on Wednesday 1 November. Pratipadā runs from 17:07 on Tue 31 Oct to 15:37 on Wed 1 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8121, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1978-11-01T15:36:31-03:00", "utc": "1978-11-01T18:36:31Z", "ms": 278793390638.82684 }, "end": { "local": "1978-11-02T13:42:32-03:00", "utc": "1978-11-02T16:42:32Z", "ms": 278872951974.18976 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-11-01T15:36:31-03:00", "utc": "1978-11-01T18:36:31Z", "ms": 278793390638.82684 }, "end": { "local": "1978-11-02T13:42:32-03:00", "utc": "1978-11-02T16:42:32Z", "ms": 278872951974.18976 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-11-01", "window": { "start": { "local": "1978-11-01T10:39:13-03:00", "utc": "1978-11-01T13:39:13Z", "ms": 278775552630.992 }, "end": { "local": "1978-11-01T11:27:13-03:00", "utc": "1978-11-01T14:27:13Z", "ms": 278778432630.992 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-11-02", "window": { "start": { "local": "1978-11-02T10:39:11-03:00", "utc": "1978-11-02T13:39:11Z", "ms": 278861951471.57227 }, "end": { "local": "1978-11-02T11:27:11-03:00", "utc": "1978-11-02T14:27:11Z", "ms": 278864831471.57227 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 15:37 on Wed 1 Nov to 13:43 on Thu 2 Nov.", "fact": "1978-11-01T18:36:31Z → 1978-11-02T16:42:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:39–11:27 on the 1st, 10:39–11:27 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 1st and 48 of 48 on the 2nd.", "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 8121 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Recife, 1978: Thursday 2 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": "1978-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-02", "confidence": "determinate" } ], "quote": "In Recife, Yama Dvitīyā (Bhai Dooj) 1978 falls on Thursday 2 November. Dvitīyā runs from 15:37 on Wed 1 Nov to 13:43 on Thu 2 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-04", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 300, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-11-03T11:32:11-03:00", "utc": "1978-11-03T14:32:11Z", "ms": 278951530988.9985 }, "end": { "local": "1978-11-04T09:12:47-03:00", "utc": "1978-11-04T12:12:47Z", "ms": 279029567326.3799 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-11-03T11:32:11-03:00", "utc": "1978-11-03T14:32:11Z", "ms": 278951530988.9985 }, "end": { "local": "1978-11-04T09:12:47-03:00", "utc": "1978-11-04T12:12:47Z", "ms": 279029567326.3799 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-11-03", "window": { "start": { "local": "1978-11-03T10:39:11-03:00", "utc": "1978-11-03T13:39:11Z", "ms": 278948351109.69934 }, "end": { "local": "1978-11-03T11:27:11-03:00", "utc": "1978-11-03T14:27:11Z", "ms": 278951231109.69934 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-11-04", "window": { "start": { "local": "1978-11-04T10:39:12-03:00", "utc": "1978-11-04T13:39:12Z", "ms": 279034751548.87573 }, "end": { "local": "1978-11-04T11:27:12-03:00", "utc": "1978-11-04T14:27:12Z", "ms": 279037631548.87573 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:32 on Fri 3 Nov to 09:13 on Sat 4 Nov.", "fact": "1978-11-03T14:32:11Z → 1978-11-04T12:12:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:39–11:27 on the 3rd, 10:39–11:27 on the 4th.", "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 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: paraviddha → second-day · margin 300 s < 300 s" }, { "step": "ruling", "text": "Nāga Caturthī, Recife, 1978: Saturday 4 November.", "fact": "confidence: boundary (margin)" } ], "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": "1978-11-04", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-03", "confidence": "determinate" } ], "quote": "In Recife, Nāga Caturthī 1978 falls on Saturday 4 November. Caturthī runs from 11:32 on Fri 3 Nov to 09:13 on Sat 4 Nov, and reaches madhyāhna on neither day. It is 5 min 00 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/vinayaka-chaturthi?on=1978-11-04", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-04", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 300, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-11-03T11:32:11-03:00", "utc": "1978-11-03T14:32:11Z", "ms": 278951530988.9985 }, "end": { "local": "1978-11-04T09:12:47-03:00", "utc": "1978-11-04T12:12:47Z", "ms": 279029567326.3799 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-11-03T11:32:11-03:00", "utc": "1978-11-03T14:32:11Z", "ms": 278951530988.9985 }, "end": { "local": "1978-11-04T09:12:47-03:00", "utc": "1978-11-04T12:12:47Z", "ms": 279029567326.3799 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-11-03", "window": { "start": { "local": "1978-11-03T10:39:11-03:00", "utc": "1978-11-03T13:39:11Z", "ms": 278948351109.69934 }, "end": { "local": "1978-11-03T11:27:11-03:00", "utc": "1978-11-03T14:27:11Z", "ms": 278951231109.69934 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-11-04", "window": { "start": { "local": "1978-11-04T10:39:12-03:00", "utc": "1978-11-04T13:39:12Z", "ms": 279034751548.87573 }, "end": { "local": "1978-11-04T11:27:12-03:00", "utc": "1978-11-04T14:27:12Z", "ms": 279037631548.87573 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:32 on Fri 3 Nov to 09:13 on Sat 4 Nov.", "fact": "1978-11-03T14:32:11Z → 1978-11-04T12:12:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:39–11:27 on the 3rd, 10:39–11:27 on the 4th.", "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 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: unstated → second-day · margin 300 s < 300 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Recife, 1978: Saturday 4 November.", "fact": "confidence: boundary (margin)" } ], "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": "1978-11-04", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-03", "confidence": "determinate" } ], "quote": "In Recife, Vināyaka Caturthī 1978 falls on Saturday 4 November. Caturthī runs from 11:32 on Fri 3 Nov to 09:13 on Sat 4 Nov, and reaches madhyāhna on neither day. It is 5 min 00 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/recife/festivals/1978/vinayaka-chaturthi?on=1978-11-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13698, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1978-11-05T06:50:55-03:00", "utc": "1978-11-05T09:50:55Z", "ms": 279107455019.23846 }, "end": { "local": "1978-11-06T04:32:02-03:00", "utc": "1978-11-06T07:32:02Z", "ms": 279185522000.2818 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-11-05T06:50:55-03:00", "utc": "1978-11-05T09:50:55Z", "ms": 279107455019.23846 }, "end": { "local": "1978-11-06T04:32:02-03:00", "utc": "1978-11-06T07:32:02Z", "ms": 279185522000.2818 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-11-05", "window": { "start": { "local": "1978-11-05T10:39:13-03:00", "utc": "1978-11-05T13:39:13Z", "ms": 279121152792.4435 }, "end": { "local": "1978-11-05T11:27:13-03:00", "utc": "1978-11-05T14:27:13Z", "ms": 279124032792.4435 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-11-06", "window": { "start": { "local": "1978-11-06T10:39:15-03:00", "utc": "1978-11-06T13:39:15Z", "ms": 279207554843.8921 }, "end": { "local": "1978-11-06T11:27:15-03:00", "utc": "1978-11-06T14:27:15Z", "ms": 279210434843.8921 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 06:51 on Sun 5 Nov to 04:32 on Mon 6 Nov.", "fact": "1978-11-05T09:50:55Z → 1978-11-06T07:32:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:39–11:27 on the 5th, 10:39–11:27 on the 6th.", "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 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: unstated → only-day · margin 13698 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Recife, 1978: Sunday 5 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": "1978-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-05", "confidence": "determinate" } ], "quote": "In Recife, Sūrya Ṣaṣṭhī (Chhath) 1978 falls on Sunday 5 November. Ṣaṣṭhī runs from 06:51 on Sun 5 Nov to 04:32 on Mon 6 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29938, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1978-11-07T02:20:19-03:00", "utc": "1978-11-07T05:20:19Z", "ms": 279264019443.6693 }, "end": { "local": "1978-11-08T00:18:42-03:00", "utc": "1978-11-08T03:18:42Z", "ms": 279343122372.57336 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-11-07T02:20:19-03:00", "utc": "1978-11-07T05:20:19Z", "ms": 279264019443.6693 }, "end": { "local": "1978-11-08T00:18:42-03:00", "utc": "1978-11-08T03:18:42Z", "ms": 279343122372.57336 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-11-07", "window": { "start": { "local": "1978-11-07T10:39:18-03:00", "utc": "1978-11-07T13:39:18Z", "ms": 279293957707.05896 }, "end": { "local": "1978-11-07T11:27:18-03:00", "utc": "1978-11-07T14:27:18Z", "ms": 279296837707.05896 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-11-08", "window": { "start": { "local": "1978-11-08T10:39:21-03:00", "utc": "1978-11-08T13:39:21Z", "ms": 279380361386.199 }, "end": { "local": "1978-11-08T11:27:21-03:00", "utc": "1978-11-08T14:27:21Z", "ms": 279383241386.199 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 02:20 on Tue 7 Nov to 00:19 on Wed 8 Nov.", "fact": "1978-11-07T05:20:19Z → 1978-11-08T03:18:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:39–11:27 on the 7th, 10:39–11:27 on the 8th.", "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 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: unstated → only-day · margin 29938 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Recife, 1978: Tuesday 7 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": "1978-11-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-07", "confidence": "determinate" } ], "quote": "In Recife, Gopāṣṭamī 1978 falls on Tuesday 7 November. Aṣṭamī runs from 02:20 on Tue 7 Nov to 00:19 on Wed 8 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16301, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1978-11-08T00:18:42-03:00", "utc": "1978-11-08T03:18:42Z", "ms": 279343122372.57336 }, "end": { "local": "1978-11-08T22:29:02-03:00", "utc": "1978-11-09T01:29:02Z", "ms": 279422942353.4983 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-11-08T00:18:42-03:00", "utc": "1978-11-08T03:18:42Z", "ms": 279343122372.57336 }, "end": { "local": "1978-11-08T22:29:02-03:00", "utc": "1978-11-09T01:29:02Z", "ms": 279422942353.4983 } }, "kaala": "purvahna", "days": [ { "local_date": "1978-11-08", "window": { "start": { "local": "1978-11-08T04:50:23-03:00", "utc": "1978-11-08T07:50:23Z", "ms": 279359423357.7899 }, "end": { "local": "1978-11-08T08:59:02-03:00", "utc": "1978-11-08T11:59:02Z", "ms": 279374342043.39594 } }, "covered_min": 249, "window_min": 249, "qualifies": true }, { "local_date": "1978-11-09", "window": { "start": { "local": "1978-11-09T04:50:17-03:00", "utc": "1978-11-09T07:50:17Z", "ms": 279445816659.9354 }, "end": { "local": "1978-11-09T08:59:03-03:00", "utc": "1978-11-09T11:59:03Z", "ms": 279460742810.602 } }, "covered_min": 0, "window_min": 249, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 00:19 on Wed 8 Nov to 22:29 on Wed 8 Nov.", "fact": "1978-11-08T03:18:42Z → 1978-11-09T01:29:02Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 04:50–08:59 on the 8th, 04:50–08:59 on the 9th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 249 of 249 minutes on the 8th and 0 of 249 on the 9th.", "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 16301 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Recife, 1978: Wednesday 8 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": "1978-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-08", "confidence": "determinate" } ], "quote": "In Recife, Akṣaya Navamī (Amla Navami) 1978 falls on Wednesday 8 November. Navamī runs from 00:19 on Wed 8 Nov to 22:29 on Wed 8 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37239, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1978-11-08T00:18:42-03:00", "utc": "1978-11-08T03:18:42Z", "ms": 279343122372.57336 }, "end": { "local": "1978-11-08T22:29:02-03:00", "utc": "1978-11-09T01:29:02Z", "ms": 279422942353.4983 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-11-08T00:18:42-03:00", "utc": "1978-11-08T03:18:42Z", "ms": 279343122372.57336 }, "end": { "local": "1978-11-08T22:29:02-03:00", "utc": "1978-11-09T01:29:02Z", "ms": 279422942353.4983 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-11-08", "window": { "start": { "local": "1978-11-08T10:39:21-03:00", "utc": "1978-11-08T13:39:21Z", "ms": 279380361386.199 }, "end": { "local": "1978-11-08T11:27:21-03:00", "utc": "1978-11-08T14:27:21Z", "ms": 279383241386.199 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-11-09", "window": { "start": { "local": "1978-11-09T10:39:26-03:00", "utc": "1978-11-09T13:39:26Z", "ms": 279466765885.9353 }, "end": { "local": "1978-11-09T11:27:26-03:00", "utc": "1978-11-09T14:27:26Z", "ms": 279469645885.9353 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 00:19 on Wed 8 Nov to 22:29 on Wed 8 Nov.", "fact": "1978-11-08T03:18:42Z → 1978-11-09T01:29:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:39–11:27 on the 8th, 10:39–11:27 on the 9th.", "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 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 37239 s" }, { "step": "ruling", "text": "Durgā Navamī, Recife, 1978: Wednesday 8 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": "1978-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-08", "confidence": "determinate" } ], "quote": "In Recife, Durgā Navamī 1978 falls on Wednesday 8 November. Navamī runs from 00:19 on Wed 8 Nov to 22:29 on Wed 8 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-11-10", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28660, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-11-09T20:52:31-03:00", "utc": "1978-11-09T23:52:31Z", "ms": 279503550943.7984 }, "end": { "local": "1978-11-10T19:30:10-03:00", "utc": "1978-11-10T22:30:10Z", "ms": 279585009564.7574 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-11-09T20:52:31-03:00", "utc": "1978-11-09T23:52:31Z", "ms": 279503550943.7984 }, "end": { "local": "1978-11-10T19:30:10-03:00", "utc": "1978-11-10T22:30:10Z", "ms": 279585009564.7574 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-11-10", "window": { "start": { "local": "1978-11-10T04:50:11-03:00", "utc": "1978-11-10T07:50:11Z", "ms": 279532210930.6259 }, "end": { "local": "1978-11-10T04:50:11-03:00", "utc": "1978-11-10T07:50:11Z", "ms": 279532210930.6259 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-11-11", "window": { "start": { "local": "1978-11-11T04:50:06-03:00", "utc": "1978-11-11T07:50:06Z", "ms": 279618606180.14307 }, "end": { "local": "1978-11-11T04:50:06-03:00", "utc": "1978-11-11T07:50:06Z", "ms": 279618606180.14307 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:53 on Thu 9 Nov to 19:30 on Fri 10 Nov.", "fact": "1978-11-09T23:52:31Z → 1978-11-10T22:30:10Z" }, { "step": "kaala", "text": "Sunrise is at 04:50 on the 10th and 04:50 on the 11th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 10th and is not on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28660 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Recife, 1978: Friday 10 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": "1978-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-10", "confidence": "determinate" } ], "quote": "In Recife, Prabodhinī Ekādaśī 1978 falls on Friday 10 November. Ekādaśī runs from 20:53 on Thu 9 Nov to 19:30 on Fri 10 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-11-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-11-11", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-11", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 995, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-11-11T18:23:19-03:00", "utc": "1978-11-11T21:23:19Z", "ms": 279667399035.4932 }, "end": { "local": "1978-11-12T17:34:01-03:00", "utc": "1978-11-12T20:34:01Z", "ms": 279750841335.5682 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-11-11T18:23:19-03:00", "utc": "1978-11-11T21:23:19Z", "ms": 279667399035.4932 }, "end": { "local": "1978-11-12T17:34:01-03:00", "utc": "1978-11-12T20:34:01Z", "ms": 279750841335.5682 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-11-11", "window": { "start": { "local": "1978-11-11T17:17:09-03:00", "utc": "1978-11-11T20:17:09Z", "ms": 279663428553.05273 }, "end": { "local": "1978-11-11T18:49:32-03:00", "utc": "1978-11-11T21:49:32Z", "ms": 279668971735.127 } }, "covered_min": 26, "window_min": 92, "qualifies": true }, { "local_date": "1978-11-12", "window": { "start": { "local": "1978-11-12T17:17:26-03:00", "utc": "1978-11-12T20:17:26Z", "ms": 279749846295.3905 }, "end": { "local": "1978-11-12T18:49:47-03:00", "utc": "1978-11-12T21:49:47Z", "ms": 279755386743.4364 } }, "covered_min": 17, "window_min": 92, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:23 on Sat 11 Nov to 17:34 on Sun 12 Nov.", "fact": "1978-11-11T21:23:19Z → 1978-11-12T20:34:01Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:17–18:50 on the 11th, 17:17–18:50 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 26 of 92 minutes on the 11th and 17 of 92 on the 12th.", "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 995 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Recife, 1978: Saturday 11 November.", "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": "1978-11-11", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-11", "confidence": "boundary" } ], "quote": "In Recife, Śukla Pradoṣa Vrata 1978 falls on Saturday 11 November. Trayodaśī runs from 18:23 on Sat 11 Nov to 17:34 on Sun 12 Nov and covers 26 of 92 minutes of pradoṣa that evening. It also reaches the next evening for 17 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-11-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20084, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-11-13T17:05:07-03:00", "utc": "1978-11-13T20:05:07Z", "ms": 279835507432.119 }, "end": { "local": "1978-11-14T17:00:07-03:00", "utc": "1978-11-14T20:00:07Z", "ms": 279921607319.1386 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-11-13T17:05:07-03:00", "utc": "1978-11-13T20:05:07Z", "ms": 279835507432.119 }, "end": { "local": "1978-11-14T17:00:07-03:00", "utc": "1978-11-14T20:00:07Z", "ms": 279921607319.1386 } }, "kaala": "nishita", "days": [ { "local_date": "1978-11-13", "window": { "start": { "local": "1978-11-13T22:39:51-03:00", "utc": "1978-11-14T01:39:51Z", "ms": 279855591308.8229 }, "end": { "local": "1978-11-13T23:27:51-03:00", "utc": "1978-11-14T02:27:51Z", "ms": 279858471308.8229 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-11-14", "window": { "start": { "local": "1978-11-14T22:40:00-03:00", "utc": "1978-11-15T01:40:00Z", "ms": 279942000488.4424 }, "end": { "local": "1978-11-14T23:28:00-03:00", "utc": "1978-11-15T02:28:00Z", "ms": 279944880488.4424 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:05 on Mon 13 Nov to 17:00 on Tue 14 Nov.", "fact": "1978-11-13T20:05:07Z → 1978-11-14T20:00:07Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:40–23:28 on the 13th, 22:40–23:28 on the 14th.", "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 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20084 s" }, { "step": "ruling", "text": "Rāsayātrā, Recife, 1978: Monday 13 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": "1978-11-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-13", "confidence": "determinate" } ], "quote": "In Recife, Rāsayātrā 1978 falls on Monday 13 November. Pūrṇimā runs from 17:05 on Mon 13 Nov to 17:00 on Tue 14 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19926, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-11-13T17:05:07-03:00", "utc": "1978-11-13T20:05:07Z", "ms": 279835507432.119 }, "end": { "local": "1978-11-14T17:00:07-03:00", "utc": "1978-11-14T20:00:07Z", "ms": 279921607319.1386 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1978-11-13T17:05:07-03:00", "utc": "1978-11-13T20:05:07Z", "ms": 279835507432.119 }, "end": { "local": "1978-11-14T17:00:07-03:00", "utc": "1978-11-14T20:00:07Z", "ms": 279921607319.1386 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-11-13", "window": { "start": { "local": "1978-11-13T10:39:52-03:00", "utc": "1978-11-13T13:39:52Z", "ms": 279812392186.41675 }, "end": { "local": "1978-11-13T11:27:52-03:00", "utc": "1978-11-13T14:27:52Z", "ms": 279815272186.41675 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-11-14", "window": { "start": { "local": "1978-11-14T10:40:01-03:00", "utc": "1978-11-14T13:40:01Z", "ms": 279898800858.13965 }, "end": { "local": "1978-11-14T11:28:01-03:00", "utc": "1978-11-14T14:28:01Z", "ms": 279901680858.13965 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:05 on Mon 13 Nov to 17:00 on Tue 14 Nov.", "fact": "1978-11-13T20:05:07Z → 1978-11-14T20:00:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:40–11:28 on the 13th, 10:40–11:28 on the 14th.", "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 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19926 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Recife, 1978: Tuesday 14 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": "1978-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-14", "confidence": "determinate" } ], "quote": "In Recife, Kārtikī Pūrṇimā 1978 falls on Tuesday 14 November. Pūrṇimā runs from 17:05 on Mon 13 Nov to 17:00 on Tue 14 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/sankashta-chaturthi?on=1978-11-17", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-17", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 609, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-11-17T19:40:52-03:00", "utc": "1978-11-17T22:40:52Z", "ms": 280190451501.4525 }, "end": { "local": "1978-11-18T21:36:16-03:00", "utc": "1978-11-19T00:36:16Z", "ms": 280283775689.0834 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-11-17T19:40:52-03:00", "utc": "1978-11-17T22:40:52Z", "ms": 280190451501.4525 }, "end": { "local": "1978-11-18T21:36:16-03:00", "utc": "1978-11-19T00:36:16Z", "ms": 280283775689.0834 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-11-17", "window": { "start": { "local": "1978-11-17T19:51:00-03:00", "utc": "1978-11-17T22:51:00Z", "ms": 280191060105.30707 }, "end": { "local": "1978-11-17T19:51:00-03:00", "utc": "1978-11-17T22:51:00Z", "ms": 280191060105.30707 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-11-18", "window": { "start": { "local": "1978-11-18T20:39:09-03:00", "utc": "1978-11-18T23:39:09Z", "ms": 280280349156.50415 }, "end": { "local": "1978-11-18T20:39:09-03:00", "utc": "1978-11-18T23:39:09Z", "ms": 280280349156.50415 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:41 on Fri 17 Nov to 21:36 on Sat 18 Nov.", "fact": "1978-11-17T22:40:52Z → 1978-11-19T00:36:16Z" }, { "step": "kaala", "text": "Moonrise is at 19:51 on the 17th and 20:39 on the 18th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 17th and is on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both moonrises qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 609 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Recife, 1978: Friday 17 November.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-11-17", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-17", "confidence": "boundary" } ], "quote": "In Recife, Saṅkaṣṭa Caturthī 1978 falls on Friday 17 November. Caturthī runs from 19:41 on Fri 17 Nov to 21:36 on Sat 18 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/sankashta-chaturthi?on=1978-11-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/ekadashi?on=1978-11-26", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21162, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-11-25T10:43:29-03:00", "utc": "1978-11-25T13:43:29Z", "ms": 280849408710.2897 }, "end": { "local": "1978-11-26T11:10:23-03:00", "utc": "1978-11-26T14:10:23Z", "ms": 280937422856.2976 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-11-25T10:43:29-03:00", "utc": "1978-11-25T13:43:29Z", "ms": 280849408710.2897 }, "end": { "local": "1978-11-26T11:10:23-03:00", "utc": "1978-11-26T14:10:23Z", "ms": 280937422856.2976 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-11-25", "window": { "start": { "local": "1978-11-25T04:50:46-03:00", "utc": "1978-11-25T07:50:46Z", "ms": 280828246464.1295 }, "end": { "local": "1978-11-25T04:50:46-03:00", "utc": "1978-11-25T07:50:46Z", "ms": 280828246464.1295 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-11-26", "window": { "start": { "local": "1978-11-26T04:50:57-03:00", "utc": "1978-11-26T07:50:57Z", "ms": 280914657037.81573 }, "end": { "local": "1978-11-26T04:50:57-03:00", "utc": "1978-11-26T07:50:57Z", "ms": 280914657037.81573 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:43 on Sat 25 Nov to 11:10 on Sun 26 Nov.", "fact": "1978-11-25T13:43:29Z → 1978-11-26T14:10:23Z" }, { "step": "kaala", "text": "Sunrise is at 04:51 on the 25th and 04:51 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 25th and is on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21162 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Recife, 1978: Sunday 26 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": "1978-11-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-26", "confidence": "determinate" } ], "quote": "In Recife, Utpannā Ekādaśī 1978 falls on Sunday 26 November. Ekādaśī runs from 10:43 on Sat 25 Nov to 11:10 on Sun 26 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-11-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-11-27", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23755, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-11-27T10:47:15-03:00", "utc": "1978-11-27T13:47:15Z", "ms": 281022435005.9818 }, "end": { "local": "1978-11-28T09:36:35-03:00", "utc": "1978-11-28T12:36:35Z", "ms": 281104594748.31274 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-11-27T10:47:15-03:00", "utc": "1978-11-27T13:47:15Z", "ms": 281022435005.9818 }, "end": { "local": "1978-11-28T09:36:35-03:00", "utc": "1978-11-28T12:36:35Z", "ms": 281104594748.31274 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-11-27", "window": { "start": { "local": "1978-11-27T17:23:10-03:00", "utc": "1978-11-27T20:23:10Z", "ms": 281046189958.99725 }, "end": { "local": "1978-11-27T18:54:55-03:00", "utc": "1978-11-27T21:54:55Z", "ms": 281051695453.95734 } }, "covered_min": 92, "window_min": 92, "qualifies": true }, { "local_date": "1978-11-28", "window": { "start": { "local": "1978-11-28T17:23:37-03:00", "utc": "1978-11-28T20:23:37Z", "ms": 281132617446.48804 }, "end": { "local": "1978-11-28T18:55:21-03:00", "utc": "1978-11-28T21:55:21Z", "ms": 281138121080.679 } }, "covered_min": 0, "window_min": 92, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:47 on Mon 27 Nov to 09:37 on Tue 28 Nov.", "fact": "1978-11-27T13:47:15Z → 1978-11-28T12:36:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:23–18:55 on the 27th, 17:24–18:55 on the 28th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 92 of 92 minutes on the 27th and 0 of 92 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23755 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Recife, 1978: Monday 27 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": "1978-11-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-27", "confidence": "determinate" } ], "quote": "In Recife, Kṛṣṇa Pradoṣa Vrata 1978 falls on Monday 27 November. Trayodaśī runs from 10:47 on Mon 27 Nov to 09:37 on Tue 28 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-11-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shivaratri?on=1978-11-28", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-11-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29572, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-11-28T09:36:35-03:00", "utc": "1978-11-28T12:36:35Z", "ms": 281104594748.31274 }, "end": { "local": "1978-11-29T07:44:28-03:00", "utc": "1978-11-29T10:44:28Z", "ms": 281184268334.2261 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-11-28T09:36:35-03:00", "utc": "1978-11-28T12:36:35Z", "ms": 281104594748.31274 }, "end": { "local": "1978-11-29T07:44:28-03:00", "utc": "1978-11-29T10:44:28Z", "ms": 281184268334.2261 } }, "kaala": "nishita", "days": [ { "local_date": "1978-11-27", "window": { "start": { "local": "1978-11-27T22:43:16-03:00", "utc": "1978-11-28T01:43:16Z", "ms": 281065395565.0976 }, "end": { "local": "1978-11-27T23:31:16-03:00", "utc": "1978-11-28T02:31:16Z", "ms": 281068275565.0976 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-11-28", "window": { "start": { "local": "1978-11-28T22:43:36-03:00", "utc": "1978-11-29T01:43:36Z", "ms": 281151816074.7043 }, "end": { "local": "1978-11-28T23:31:36-03:00", "utc": "1978-11-29T02:31:36Z", "ms": 281154696074.7043 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:37 on Tue 28 Nov to 07:44 on Wed 29 Nov.", "fact": "1978-11-28T12:36:35Z → 1978-11-29T10:44:28Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:43–23:31 on the 27th, 22:44–23:32 on the 28th.", "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 27th and 48 of 48 on the 28th.", "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 29572 s" }, { "step": "ruling", "text": "Śivarātri, Recife, 1978: Tuesday 28 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-11-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-11-28", "confidence": "determinate" } ], "quote": "In Recife, Śivarātri 1978 falls on Tuesday 28 November. Caturdaśī runs from 09:37 on Tue 28 Nov to 07:44 on Wed 29 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/shivaratri?on=1978-11-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/vinayaka-chaturthi?on=1978-12-03", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-12-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21344, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-12-02T20:26:34-03:00", "utc": "1978-12-02T23:26:34Z", "ms": 281489193922.8197 }, "end": { "local": "1978-12-03T17:29:04-03:00", "utc": "1978-12-03T20:29:04Z", "ms": 281564943818.92896 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-12-02T20:26:34-03:00", "utc": "1978-12-02T23:26:34Z", "ms": 281489193922.8197 }, "end": { "local": "1978-12-03T17:29:04-03:00", "utc": "1978-12-03T20:29:04Z", "ms": 281564943818.92896 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-12-02", "window": { "start": { "local": "1978-12-02T10:44:56-03:00", "utc": "1978-12-02T13:44:56Z", "ms": 281454296292.14624 }, "end": { "local": "1978-12-02T11:32:56-03:00", "utc": "1978-12-02T14:32:56Z", "ms": 281457176292.14624 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-12-03", "window": { "start": { "local": "1978-12-03T10:45:20-03:00", "utc": "1978-12-03T13:45:20Z", "ms": 281540719631.6084 }, "end": { "local": "1978-12-03T11:33:20-03:00", "utc": "1978-12-03T14:33:20Z", "ms": 281543599631.6084 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:27 on Sat 2 Dec to 17:29 on Sun 3 Dec.", "fact": "1978-12-02T23:26:34Z → 1978-12-03T20:29:04Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:45–11:33 on the 2nd, 10:45–11:33 on the 3rd.", "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 2nd and 48 of 48 on the 3rd.", "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 21344 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Recife, 1978: Sunday 3 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": "1978-12-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-12-03", "confidence": "determinate" } ], "quote": "In Recife, Vināyaka Caturthī 1978 falls on Sunday 3 December. Caturthī runs from 20:27 on Sat 2 Dec to 17:29 on Sun 3 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/vinayaka-chaturthi?on=1978-12-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-12-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11516, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1978-12-03T17:29:04-03:00", "utc": "1978-12-03T20:29:04Z", "ms": 281564943818.92896 }, "end": { "local": "1978-12-04T14:45:40-03:00", "utc": "1978-12-04T17:45:40Z", "ms": 281641539924.3479 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-12-03T17:29:04-03:00", "utc": "1978-12-03T20:29:04Z", "ms": 281564943818.92896 }, "end": { "local": "1978-12-04T14:45:40-03:00", "utc": "1978-12-04T17:45:40Z", "ms": 281641539924.3479 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-12-03", "window": { "start": { "local": "1978-12-03T10:45:20-03:00", "utc": "1978-12-03T13:45:20Z", "ms": 281540719631.6084 }, "end": { "local": "1978-12-03T11:33:20-03:00", "utc": "1978-12-03T14:33:20Z", "ms": 281543599631.6084 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-12-04", "window": { "start": { "local": "1978-12-04T10:45:44-03:00", "utc": "1978-12-04T13:45:44Z", "ms": 281627143554.1271 }, "end": { "local": "1978-12-04T11:33:44-03:00", "utc": "1978-12-04T14:33:44Z", "ms": 281630023554.1271 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 17:29 on Sun 3 Dec to 14:46 on Mon 4 Dec.", "fact": "1978-12-03T20:29:04Z → 1978-12-04T17:45:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:45–11:33 on the 3rd, 10:46–11:34 on the 4th.", "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 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 11516 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Recife, 1978: Monday 4 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": "1978-12-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-12-04", "confidence": "determinate" } ], "quote": "In Recife, Nāga Pañcamī (Mārgaśīrṣa) 1978 falls on Monday 4 December. Pañcamī runs from 17:29 on Sun 3 Dec to 14:46 on Mon 4 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-12-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2899, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1978-12-04T14:45:40-03:00", "utc": "1978-12-04T17:45:40Z", "ms": 281641539924.3479 }, "end": { "local": "1978-12-05T12:22:27-03:00", "utc": "1978-12-05T15:22:27Z", "ms": 281719346950.2179 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-12-04T14:45:40-03:00", "utc": "1978-12-04T17:45:40Z", "ms": 281641539924.3479 }, "end": { "local": "1978-12-05T12:22:27-03:00", "utc": "1978-12-05T15:22:27Z", "ms": 281719346950.2179 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-12-04", "window": { "start": { "local": "1978-12-04T10:45:44-03:00", "utc": "1978-12-04T13:45:44Z", "ms": 281627143554.1271 }, "end": { "local": "1978-12-04T11:33:44-03:00", "utc": "1978-12-04T14:33:44Z", "ms": 281630023554.1271 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-12-05", "window": { "start": { "local": "1978-12-05T10:46:08-03:00", "utc": "1978-12-05T13:46:08Z", "ms": 281713568032.4239 }, "end": { "local": "1978-12-05T11:34:08-03:00", "utc": "1978-12-05T14:34:08Z", "ms": 281716448032.4239 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 14:46 on Mon 4 Dec to 12:22 on Tue 5 Dec.", "fact": "1978-12-04T17:45:40Z → 1978-12-05T15:22:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:46–11:34 on the 4th, 10:46–11:34 on the 5th.", "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 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 2899 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Recife, 1978: Tuesday 5 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": "1978-12-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-12-05", "confidence": "boundary" } ], "quote": "In Recife, Campā Ṣaṣṭhī 1978 falls on Tuesday 5 December. Ṣaṣṭhī runs from 14:46 on Mon 4 Dec to 12:22 on Tue 5 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-12-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2899, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1978-12-04T14:45:40-03:00", "utc": "1978-12-04T17:45:40Z", "ms": 281641539924.3479 }, "end": { "local": "1978-12-05T12:22:27-03:00", "utc": "1978-12-05T15:22:27Z", "ms": 281719346950.2179 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-12-04T14:45:40-03:00", "utc": "1978-12-04T17:45:40Z", "ms": 281641539924.3479 }, "end": { "local": "1978-12-05T12:22:27-03:00", "utc": "1978-12-05T15:22:27Z", "ms": 281719346950.2179 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-12-04", "window": { "start": { "local": "1978-12-04T10:45:44-03:00", "utc": "1978-12-04T13:45:44Z", "ms": 281627143554.1271 }, "end": { "local": "1978-12-04T11:33:44-03:00", "utc": "1978-12-04T14:33:44Z", "ms": 281630023554.1271 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-12-05", "window": { "start": { "local": "1978-12-05T10:46:08-03:00", "utc": "1978-12-05T13:46:08Z", "ms": 281713568032.4239 }, "end": { "local": "1978-12-05T11:34:08-03:00", "utc": "1978-12-05T14:34:08Z", "ms": 281716448032.4239 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 14:46 on Mon 4 Dec to 12:22 on Tue 5 Dec.", "fact": "1978-12-04T17:45:40Z → 1978-12-05T15:22:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:46–11:34 on the 4th, 10:46–11:34 on the 5th.", "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 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: purvaviddha → only-day · margin 2899 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Recife, 1978: Tuesday 5 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": "1978-12-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-12-05", "confidence": "boundary" } ], "quote": "In Recife, Skanda Ṣaṣṭhī 1978 falls on Tuesday 5 December. Ṣaṣṭhī runs from 14:46 on Mon 4 Dec to 12:22 on Tue 5 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-12-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1383, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1978-12-05T12:22:27-03:00", "utc": "1978-12-05T15:22:27Z", "ms": 281719346950.2179 }, "end": { "local": "1978-12-06T10:23:30-03:00", "utc": "1978-12-06T13:23:30Z", "ms": 281798610412.03937 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-12-05T12:22:27-03:00", "utc": "1978-12-05T15:22:27Z", "ms": 281719346950.2179 }, "end": { "local": "1978-12-06T10:23:30-03:00", "utc": "1978-12-06T13:23:30Z", "ms": 281798610412.03937 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-12-05", "window": { "start": { "local": "1978-12-05T10:46:08-03:00", "utc": "1978-12-05T13:46:08Z", "ms": 281713568032.4239 }, "end": { "local": "1978-12-05T11:34:08-03:00", "utc": "1978-12-05T14:34:08Z", "ms": 281716448032.4239 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1978-12-06", "window": { "start": { "local": "1978-12-06T10:46:33-03:00", "utc": "1978-12-06T13:46:33Z", "ms": 281799993039.68835 }, "end": { "local": "1978-12-06T11:34:33-03:00", "utc": "1978-12-06T14:34:33Z", "ms": 281802873039.68835 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 12:22 on Tue 5 Dec to 10:24 on Wed 6 Dec.", "fact": "1978-12-05T15:22:27Z → 1978-12-06T13:23:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:46–11:34 on the 5th, 10:47–11:35 on the 6th.", "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 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: purvaviddha → second-day · margin 1383 s" }, { "step": "ruling", "text": "Mitra Saptamī, Recife, 1978: Wednesday 6 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": "1978-12-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-12-05", "confidence": "boundary" } ], "quote": "In Recife, Mitra Saptamī 1978 falls on Wednesday 6 December. Saptamī runs from 12:22 on Tue 5 Dec to 10:24 on Wed 6 Dec, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/ekadashi?on=1978-12-10", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-12-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6805, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-12-09T07:04:36-03:00", "utc": "1978-12-09T10:04:36Z", "ms": 282045876067.8037 }, "end": { "local": "1978-12-10T06:48:27-03:00", "utc": "1978-12-10T09:48:27Z", "ms": 282131306864.3516 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-12-09T07:04:36-03:00", "utc": "1978-12-09T10:04:36Z", "ms": 282045876067.8037 }, "end": { "local": "1978-12-10T06:48:27-03:00", "utc": "1978-12-10T09:48:27Z", "ms": 282131306864.3516 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-12-09", "window": { "start": { "local": "1978-12-09T04:54:39-03:00", "utc": "1978-12-09T07:54:39Z", "ms": 282038079016.80896 }, "end": { "local": "1978-12-09T04:54:39-03:00", "utc": "1978-12-09T07:54:39Z", "ms": 282038079016.80896 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1978-12-10", "window": { "start": { "local": "1978-12-10T04:55:02-03:00", "utc": "1978-12-10T07:55:02Z", "ms": 282124501866.3528 }, "end": { "local": "1978-12-10T04:55:02-03:00", "utc": "1978-12-10T07:55:02Z", "ms": 282124501866.3528 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:05 on Sat 9 Dec to 06:48 on Sun 10 Dec.", "fact": "1978-12-09T10:04:36Z → 1978-12-10T09:48:27Z" }, { "step": "kaala", "text": "Sunrise is at 04:55 on the 9th and 04:55 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 9th and is on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6805 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Recife, 1978: Sunday 10 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1978-12-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-12-10", "confidence": "determinate" } ], "quote": "In Recife, Mokṣadā Ekādaśī 1978 falls on Sunday 10 December. Ekādaśī runs from 07:05 on Sat 9 Dec to 06:48 on Sun 10 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-12-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-12-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14015, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1978-12-10T06:48:27-03:00", "utc": "1978-12-10T09:48:27Z", "ms": 282131306864.3516 }, "end": { "local": "1978-12-11T06:55:10-03:00", "utc": "1978-12-11T09:55:10Z", "ms": 282218109971.6272 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-12-10T06:48:27-03:00", "utc": "1978-12-10T09:48:27Z", "ms": 282131306864.3516 }, "end": { "local": "1978-12-11T06:55:10-03:00", "utc": "1978-12-11T09:55:10Z", "ms": 282218109971.6272 } }, "kaala": "madhyahna", "days": [ { "local_date": "1978-12-10", "window": { "start": { "local": "1978-12-10T10:48:18-03:00", "utc": "1978-12-10T13:48:18Z", "ms": 282145697835.60077 }, "end": { "local": "1978-12-10T11:36:18-03:00", "utc": "1978-12-10T14:36:18Z", "ms": 282148577835.60077 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1978-12-11", "window": { "start": { "local": "1978-12-11T10:48:45-03:00", "utc": "1978-12-11T13:48:45Z", "ms": 282232125096.67365 }, "end": { "local": "1978-12-11T11:36:45-03:00", "utc": "1978-12-11T14:36:45Z", "ms": 282235005096.67365 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 06:48 on Sun 10 Dec to 06:55 on Mon 11 Dec.", "fact": "1978-12-10T09:48:27Z → 1978-12-11T09:55:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 10:48–11:36 on the 10th, 10:49–11:37 on the 11th.", "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 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 14015 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Recife, 1978: Sunday 10 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": "1978-12-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-12-10", "confidence": "determinate" } ], "quote": "In Recife, Akhaṇḍa Dvādaśī 1978 falls on Sunday 10 December. Dvādaśī runs from 06:48 on Sun 10 Dec to 06:55 on Mon 11 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/pradosha-vrata?on=1978-12-11", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-12-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36386, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-12-11T06:55:10-03:00", "utc": "1978-12-11T09:55:10Z", "ms": 282218109971.6272 }, "end": { "local": "1978-12-12T07:24:10-03:00", "utc": "1978-12-12T10:24:10Z", "ms": 282306250038.58234 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-12-11T06:55:10-03:00", "utc": "1978-12-11T09:55:10Z", "ms": 282218109971.6272 }, "end": { "local": "1978-12-12T07:24:10-03:00", "utc": "1978-12-12T10:24:10Z", "ms": 282306250038.58234 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-12-11", "window": { "start": { "local": "1978-12-11T17:30:05-03:00", "utc": "1978-12-11T20:30:05Z", "ms": 282256204762.744 }, "end": { "local": "1978-12-11T19:01:31-03:00", "utc": "1978-12-11T22:01:31Z", "ms": 282261690752.57526 } }, "covered_min": 91, "window_min": 91, "qualifies": true }, { "local_date": "1978-12-12", "window": { "start": { "local": "1978-12-12T17:30:36-03:00", "utc": "1978-12-12T20:30:36Z", "ms": 282342635773.95526 }, "end": { "local": "1978-12-12T19:02:01-03:00", "utc": "1978-12-12T22:02:01Z", "ms": 282348120952.124 } }, "covered_min": 0, "window_min": 91, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:55 on Mon 11 Dec to 07:24 on Tue 12 Dec.", "fact": "1978-12-11T09:55:10Z → 1978-12-12T10:24:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:30–19:02 on the 11th, 17:31–19:02 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 91 of 91 minutes on the 11th and 0 of 91 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36386 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Recife, 1978: Monday 11 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": "1978-12-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-12-11", "confidence": "determinate" } ], "quote": "In Recife, Śukla Pradoṣa Vrata 1978 falls on Monday 11 December. Trayodaśī runs from 06:55 on Mon 11 Dec to 07:24 on Tue 12 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-12-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-12-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28859, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1978-12-13T08:15:43-03:00", "utc": "1978-12-13T11:15:43Z", "ms": 282395742977.13165 }, "end": { "local": "1978-12-14T09:30:39-03:00", "utc": "1978-12-14T12:30:39Z", "ms": 282486638755.6932 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-12-13T08:15:43-03:00", "utc": "1978-12-13T11:15:43Z", "ms": 282395742977.13165 }, "end": { "local": "1978-12-14T09:30:39-03:00", "utc": "1978-12-14T12:30:39Z", "ms": 282486638755.6932 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-12-13", "window": { "start": { "local": "1978-12-13T17:31:07-03:00", "utc": "1978-12-13T20:31:07Z", "ms": 282429066808.53143 }, "end": { "local": "1978-12-13T19:02:31-03:00", "utc": "1978-12-13T22:02:31Z", "ms": 282434551257.6997 } }, "covered_min": 91, "window_min": 91, "qualifies": true }, { "local_date": "1978-12-14", "window": { "start": { "local": "1978-12-14T17:31:38-03:00", "utc": "1978-12-14T20:31:38Z", "ms": 282515497836.17236 }, "end": { "local": "1978-12-14T19:03:02-03:00", "utc": "1978-12-14T22:03:02Z", "ms": 282520981639.65515 } }, "covered_min": 0, "window_min": 91, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 08:16 on Wed 13 Dec to 09:31 on Thu 14 Dec.", "fact": "1978-12-13T11:15:43Z → 1978-12-14T12:30:39Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:31–19:03 on the 13th, 17:32–19:03 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 91 of 91 minutes on the 13th and 0 of 91 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28859 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Recife, 1978: Wednesday 13 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": "1978-12-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-12-13", "confidence": "determinate" } ], "quote": "In Recife, Dattātreyotpatti (Datta Jayanti) 1978 falls on Wednesday 13 December. Pūrṇimā runs from 08:16 on Wed 13 Dec to 09:31 on Thu 14 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/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": "/recife/festivals/1978/sankashta-chaturthi?on=1978-12-17", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-12-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9321, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1978-12-17T15:35:51-03:00", "utc": "1978-12-17T18:35:51Z", "ms": 282767751044.7938 }, "end": { "local": "1978-12-18T18:14:17-03:00", "utc": "1978-12-18T21:14:17Z", "ms": 282863657110.2792 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-12-17T15:35:51-03:00", "utc": "1978-12-17T18:35:51Z", "ms": 282767751044.7938 }, "end": { "local": "1978-12-18T18:14:17-03:00", "utc": "1978-12-18T21:14:17Z", "ms": 282863657110.2792 } }, "kaala": "moonrise", "days": [ { "local_date": "1978-12-17", "window": { "start": { "local": "1978-12-17T20:05:50-03:00", "utc": "1978-12-17T23:05:50Z", "ms": 282783950232.45886 }, "end": { "local": "1978-12-17T20:05:50-03:00", "utc": "1978-12-17T23:05:50Z", "ms": 282783950232.45886 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-12-18", "window": { "start": { "local": "1978-12-18T20:49:38-03:00", "utc": "1978-12-18T23:49:38Z", "ms": 282872978087.85986 }, "end": { "local": "1978-12-18T20:49:38-03:00", "utc": "1978-12-18T23:49:38Z", "ms": 282872978087.85986 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:36 on Sun 17 Dec to 18:14 on Mon 18 Dec.", "fact": "1978-12-17T18:35:51Z → 1978-12-18T21:14:17Z" }, { "step": "kaala", "text": "Moonrise is at 20:06 on the 17th and 20:50 on the 18th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 17th and is not on the 18th.", "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 9321 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Recife, 1978: Sunday 17 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": "1978-12-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-12-17", "confidence": "determinate" } ], "quote": "In Recife, Saṅkaṣṭa Caturthī 1978 falls on Sunday 17 December. Caturthī runs from 15:36 on Sun 17 Dec to 18:14 on Mon 18 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/sankashta-chaturthi?on=1978-12-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/ekadashi?on=1978-12-25", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-12-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2878, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1978-12-25T04:13:58-03:00", "utc": "1978-12-25T07:13:58Z", "ms": 283418038299.70087 }, "end": { "local": "1978-12-26T03:18:12-03:00", "utc": "1978-12-26T06:18:12Z", "ms": 283501091673.3971 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-12-25T04:13:58-03:00", "utc": "1978-12-25T07:13:58Z", "ms": 283418038299.70087 }, "end": { "local": "1978-12-26T03:18:12-03:00", "utc": "1978-12-26T06:18:12Z", "ms": 283501091673.3971 } }, "kaala": "sunrise", "days": [ { "local_date": "1978-12-25", "window": { "start": { "local": "1978-12-25T05:01:56-03:00", "utc": "1978-12-25T08:01:56Z", "ms": 283420915930.3381 }, "end": { "local": "1978-12-25T05:01:56-03:00", "utc": "1978-12-25T08:01:56Z", "ms": 283420915930.3381 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1978-12-26", "window": { "start": { "local": "1978-12-26T05:02:27-03:00", "utc": "1978-12-26T08:02:27Z", "ms": 283507346964.6353 }, "end": { "local": "1978-12-26T05:02:27-03:00", "utc": "1978-12-26T08:02:27Z", "ms": 283507346964.6353 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:14 on Mon 25 Dec to 03:18 on Tue 26 Dec.", "fact": "1978-12-25T07:13:58Z → 1978-12-26T06:18:12Z" }, { "step": "kaala", "text": "Sunrise is at 05:02 on the 25th and 05:02 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 25th and is not on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2878 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Recife, 1978: Monday 25 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": "1978-12-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-12-25", "confidence": "determinate" } ], "quote": "In Recife, Saphalā Ekādaśī 1978 falls on Monday 25 December. Ekādaśī runs from 04:14 on Mon 25 Dec to 03:18 on Tue 26 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/recife/festivals/1978/ekadashi?on=1978-12-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/pradosha-vrata?on=1978-12-27", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-12-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14027, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1978-12-27T01:32:14-03:00", "utc": "1978-12-27T04:32:14Z", "ms": 283581134138.6193 }, "end": { "local": "1978-12-27T23:03:17-03:00", "utc": "1978-12-28T02:03:17Z", "ms": 283658596654.9588 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-12-27T01:32:14-03:00", "utc": "1978-12-27T04:32:14Z", "ms": 283581134138.6193 }, "end": { "local": "1978-12-27T23:03:17-03:00", "utc": "1978-12-28T02:03:17Z", "ms": 283658596654.9588 } }, "kaala": "pradosha", "days": [ { "local_date": "1978-12-26", "window": { "start": { "local": "1978-12-26T17:37:38-03:00", "utc": "1978-12-26T20:37:38Z", "ms": 283552658035.77496 }, "end": { "local": "1978-12-26T19:09:01-03:00", "utc": "1978-12-26T22:09:01Z", "ms": 283558140729.34534 } }, "covered_min": 0, "window_min": 91, "qualifies": false }, { "local_date": "1978-12-27", "window": { "start": { "local": "1978-12-27T17:38:06-03:00", "utc": "1978-12-27T20:38:06Z", "ms": 283639086034.2249 }, "end": { "local": "1978-12-27T19:09:29-03:00", "utc": "1978-12-27T22:09:29Z", "ms": 283644569191.0488 } }, "covered_min": 91, "window_min": 91, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:32 on Wed 27 Dec to 23:03 on Wed 27 Dec.", "fact": "1978-12-27T04:32:14Z → 1978-12-28T02:03:17Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:38–19:09 on the 26th, 17:38–19:09 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 91 minutes on the 26th and 91 of 91 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14027 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Recife, 1978: Wednesday 27 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": "1978-12-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-12-27", "confidence": "determinate" } ], "quote": "In Recife, Kṛṣṇa Pradoṣa Vrata 1978 falls on Wednesday 27 December. Trayodaśī runs from 01:32 on Wed 27 Dec to 23:03 on Wed 27 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/recife/festivals/1978/pradosha-vrata?on=1978-12-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/recife/festivals/1978/shivaratri?on=1978-12-27", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3390760", "year": 1978, "local_date": "1978-12-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 389, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1978-12-27T23:03:17-03:00", "utc": "1978-12-28T02:03:17Z", "ms": 283658596654.9588 }, "end": { "local": "1978-12-28T20:00:52-03:00", "utc": "1978-12-28T23:00:52Z", "ms": 283734052392.6374 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1978-12-27T23:03:17-03:00", "utc": "1978-12-28T02:03:17Z", "ms": 283658596654.9588 }, "end": { "local": "1978-12-28T20:00:52-03:00", "utc": "1978-12-28T23:00:52Z", "ms": 283734052392.6374 } }, "kaala": "nishita", "days": [ { "local_date": "1978-12-27", "window": { "start": { "local": "1978-12-27T22:56:48-03:00", "utc": "1978-12-28T01:56:48Z", "ms": 283658207872.3147 }, "end": { "local": "1978-12-27T23:44:48-03:00", "utc": "1978-12-28T02:44:48Z", "ms": 283661087872.3147 } }, "covered_min": 42, "window_min": 48, "qualifies": true }, { "local_date": "1978-12-28", "window": { "start": { "local": "1978-12-28T22:57:17-03:00", "utc": "1978-12-29T01:57:17Z", "ms": 283744637451.6437 }, "end": { "local": "1978-12-28T23:45:17-03:00", "utc": "1978-12-29T02:45:17Z", "ms": 283747517451.6437 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:03 on Wed 27 Dec to 20:01 on Thu 28 Dec.", "fact": "1978-12-28T02:03:17Z → 1978-12-28T23:00:52Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 22:57–23:45 on the 27th, 22:57–23:45 on the 28th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 42 of 48 minutes on the 27th and 0 of 48 on the 28th.", "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 389 s" }, { "step": "ruling", "text": "Śivarātri, Recife, 1978: Wednesday 27 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": "1978-12-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1978-12-27", "confidence": "determinate" } ], "quote": "In Recife, Śivarātri 1978 falls on Wednesday 27 December. Caturdaśī runs from 23:03 on Wed 27 Dec to 20:01 on Thu 28 Dec and covers 42 of 48 minutes of niśītha that night.", "cite": "https://ahargana.org/recife/festivals/1978/shivaratri?on=1978-12-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } } ], "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }