{ "id": "/chicago/festivals/1982", "place": { "id": "4887398", "slug": "chicago", "name": "Chicago", "region": "Illinois, United States", "country": "US", "lat": 41.85003, "lon": -87.65005, "elevation_m": 179, "tz": "America/Chicago" }, "year": 1982, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/chicago/festivals/1982/ekadashi?on=1982-01-05", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5022, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-01-05T05:55:01-06:00", "utc": "1982-01-05T11:55:01Z", "ms": 379079701197.9317 }, "end": { "local": "1982-01-06T03:06:26-06:00", "utc": "1982-01-06T09:06:26Z", "ms": 379155985952.7514 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-01-05T05:55:01-06:00", "utc": "1982-01-05T11:55:01Z", "ms": 379079701197.9317 }, "end": { "local": "1982-01-06T03:06:26-06:00", "utc": "1982-01-06T09:06:26Z", "ms": 379155985952.7514 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-01-05", "window": { "start": { "local": "1982-01-05T07:18:43-06:00", "utc": "1982-01-05T13:18:43Z", "ms": 379084723487.0034 }, "end": { "local": "1982-01-05T07:18:43-06:00", "utc": "1982-01-05T13:18:43Z", "ms": 379084723487.0034 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-01-06", "window": { "start": { "local": "1982-01-06T07:18:39-06:00", "utc": "1982-01-06T13:18:39Z", "ms": 379171118861.50916 }, "end": { "local": "1982-01-06T07:18:39-06:00", "utc": "1982-01-06T13:18:39Z", "ms": 379171118861.50916 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:55 on Tue 5 Jan to 03:06 on Wed 6 Jan.", "fact": "1982-01-05T11:55:01Z → 1982-01-06T09:06:26Z" }, { "step": "kaala", "text": "Sunrise is at 07:19 on the 5th and 07:19 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5022 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Chicago, 1982: Tuesday 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": "1982-01-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-05", "confidence": "determinate" } ], "quote": "In Chicago, Putradā Ekādaśī 1982 falls on Tuesday 5 January. Ekādaśī runs from 05:55 on Tue 5 Jan to 03:06 on Wed 6 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-01-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-01-07", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7371, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-01-06T23:57:26-06:00", "utc": "1982-01-07T05:57:26Z", "ms": 379231046454.49475 }, "end": { "local": "1982-01-07T20:36:09-06:00", "utc": "1982-01-08T02:36:09Z", "ms": 379305369310.1059 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-01-06T23:57:26-06:00", "utc": "1982-01-07T05:57:26Z", "ms": 379231046454.49475 }, "end": { "local": "1982-01-07T20:36:09-06:00", "utc": "1982-01-08T02:36:09Z", "ms": 379305369310.1059 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-01-06", "window": { "start": { "local": "1982-01-06T16:34:36-06:00", "utc": "1982-01-06T22:34:36Z", "ms": 379204476001.8762 }, "end": { "local": "1982-01-06T18:32:27-06:00", "utc": "1982-01-07T00:32:27Z", "ms": 379211547450.0846 } }, "covered_min": 0, "window_min": 118, "qualifies": false }, { "local_date": "1982-01-07", "window": { "start": { "local": "1982-01-07T16:35:36-06:00", "utc": "1982-01-07T22:35:36Z", "ms": 379290935623.8999 }, "end": { "local": "1982-01-07T18:33:18-06:00", "utc": "1982-01-08T00:33:18Z", "ms": 379297997874.3783 } }, "covered_min": 118, "window_min": 118, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:57 on Wed 6 Jan to 20:36 on Thu 7 Jan.", "fact": "1982-01-07T05:57:26Z → 1982-01-08T02:36:09Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:35–18:32 on the 6th, 16:36–18:33 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 118 minutes on the 6th and 118 of 118 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 7371 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 1982: Thursday 7 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": "1982-01-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-07", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 1982 falls on Thursday 7 January. Trayodaśī runs from 23:57 on Wed 6 Jan to 20:36 on Thu 7 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-01-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/sankashta-chaturthi?on=1982-01-12", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30465, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-01-12T06:06:35-06:00", "utc": "1982-01-12T12:06:35Z", "ms": 379685194738.52185 }, "end": { "local": "1982-01-13T04:42:34-06:00", "utc": "1982-01-13T10:42:34Z", "ms": 379766553897.8919 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-01-12T06:06:35-06:00", "utc": "1982-01-12T12:06:35Z", "ms": 379685194738.52185 }, "end": { "local": "1982-01-13T04:42:34-06:00", "utc": "1982-01-13T10:42:34Z", "ms": 379766553897.8919 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-01-11", "window": { "start": { "local": "1982-01-11T19:04:49-06:00", "utc": "1982-01-12T01:04:49Z", "ms": 379645489131.8588 }, "end": { "local": "1982-01-11T19:04:49-06:00", "utc": "1982-01-12T01:04:49Z", "ms": 379645489131.8588 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-01-12", "window": { "start": { "local": "1982-01-12T20:14:49-06:00", "utc": "1982-01-13T02:14:49Z", "ms": 379736088781.3822 }, "end": { "local": "1982-01-12T20:14:49-06:00", "utc": "1982-01-13T02:14:49Z", "ms": 379736088781.3822 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:07 on Tue 12 Jan to 04:43 on Wed 13 Jan.", "fact": "1982-01-12T12:06:35Z → 1982-01-13T10:42:34Z" }, { "step": "kaala", "text": "Moonrise is at 19:05 on the 11th and 20:15 on the 12th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 11th and is on the 12th.", "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 30465 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 1982: Tuesday 12 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": "1982-01-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-12", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 1982 falls on Tuesday 12 January. Caturthī runs from 06:07 on Tue 12 Jan to 04:43 on Wed 13 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/sankashta-chaturthi?on=1982-01-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14429, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1982-01-13T20:42:29-06:00", "utc": "1982-01-14T02:42:29Z", "ms": 379824148822.85406 }, "end": { "local": "1982-02-12T09:44:07-06:00", "utc": "1982-02-12T15:44:07Z", "ms": 382376646642.36884 } }, "span": { "of": "transit", "start": { "local": "1982-01-13T20:42:29-06:00", "utc": "1982-01-14T02:42:29Z", "ms": 379824148822.85406 }, "end": { "local": "1982-01-13T20:42:29-06:00", "utc": "1982-01-14T02:42:29Z", "ms": 379824148822.85406 } }, "kaala": "sunset-day", "days": [ { "local_date": "1982-01-13", "window": { "start": { "local": "1982-01-12T16:40:53-06:00", "utc": "1982-01-12T22:40:53Z", "ms": 379723252704.5344 }, "end": { "local": "1982-01-13T16:42:00-06:00", "utc": "1982-01-13T22:42:00Z", "ms": 379809719545.5795 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1982-01-14", "window": { "start": { "local": "1982-01-13T16:42:00-06:00", "utc": "1982-01-13T22:42:00Z", "ms": 379809719545.5795 }, "end": { "local": "1982-01-14T16:43:07-06:00", "utc": "1982-01-14T22:43:07Z", "ms": 379896187403.4674 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1982-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 20:42 on Wed 13 Jan.", "fact": "1982-01-14T02:42:29Z · 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 16:42, and the day of the 14th ends at 16:43.", "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 14429 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Thursday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Chicago, 1982: Wednesday 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": "1982-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1982-01-12", "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": "1982-01-12", "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 Chicago, Bhogi 1982 falls on Wednesday 13 January. It is kept the day before Pongal, which falls on Thursday 14 January. The Sun enters Makara at 20:42 on Wed 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/chicago/festivals/1982/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": "/chicago/festivals/1982/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11851, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1982-01-13T20:42:29-06:00", "utc": "1982-01-14T02:42:29Z", "ms": 379824148822.85406 }, "end": { "local": "1982-02-12T09:44:07-06:00", "utc": "1982-02-12T15:44:07Z", "ms": 382376646642.36884 } }, "span": { "of": "transit", "start": { "local": "1982-01-13T20:42:29-06:00", "utc": "1982-01-14T02:42:29Z", "ms": 379824148822.85406 }, "end": { "local": "1982-01-13T20:42:29-06:00", "utc": "1982-01-14T02:42:29Z", "ms": 379824148822.85406 } }, "kaala": "civil-day", "days": [ { "local_date": "1982-01-13", "window": { "start": { "local": "1982-01-13T00:00:00-06:00", "utc": "1982-01-13T06:00:00Z", "ms": 379749600000 }, "end": { "local": "1982-01-14T00:00:00-06:00", "utc": "1982-01-14T06:00:00Z", "ms": 379836000000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1982-01-14", "window": { "start": { "local": "1982-01-14T00:00:00-06:00", "utc": "1982-01-14T06:00:00Z", "ms": 379836000000 }, "end": { "local": "1982-01-15T00:00:00-06:00", "utc": "1982-01-15T06:00:00Z", "ms": 379922400000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 20:42 on Wed 13 Jan.", "fact": "1982-01-14T02:42:29Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Chicago.", "fact": "civil-day: midnight-to-midnight · America/Chicago" }, { "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 11851 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Chicago, 1982: Wednesday 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": "1982-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1982-01-13", "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": "1982-01-14", "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 Chicago, Makara Saṅkrānti 1982 falls on Wednesday 13 January. The Sun enters Makara at 20:42 on Wed 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/chicago/festivals/1982/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": "/chicago/festivals/1982/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14429, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1982-01-13T20:42:29-06:00", "utc": "1982-01-14T02:42:29Z", "ms": 379824148822.85406 }, "end": { "local": "1982-02-12T09:44:07-06:00", "utc": "1982-02-12T15:44:07Z", "ms": 382376646642.36884 } }, "span": { "of": "transit", "start": { "local": "1982-01-13T20:42:29-06:00", "utc": "1982-01-14T02:42:29Z", "ms": 379824148822.85406 }, "end": { "local": "1982-01-13T20:42:29-06:00", "utc": "1982-01-14T02:42:29Z", "ms": 379824148822.85406 } }, "kaala": "sunset-day", "days": [ { "local_date": "1982-01-13", "window": { "start": { "local": "1982-01-12T16:40:53-06:00", "utc": "1982-01-12T22:40:53Z", "ms": 379723252704.5344 }, "end": { "local": "1982-01-13T16:42:00-06:00", "utc": "1982-01-13T22:42:00Z", "ms": 379809719545.5795 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1982-01-14", "window": { "start": { "local": "1982-01-13T16:42:00-06:00", "utc": "1982-01-13T22:42:00Z", "ms": 379809719545.5795 }, "end": { "local": "1982-01-14T16:43:07-06:00", "utc": "1982-01-14T22:43:07Z", "ms": 379896187403.4674 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 20:42 on Wed 13 Jan.", "fact": "1982-01-14T02:42:29Z · 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 16:42, and the day of the 14th ends at 16:43.", "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 14429 s" }, { "step": "ruling", "text": "Pongal, Chicago, 1982: Thursday 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": "1982-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1982-01-13", "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": "1982-01-13", "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 Chicago, Pongal 1982 falls on Thursday 14 January. The Sun enters Makara at 20:42 on Wed 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/chicago/festivals/1982/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": "/chicago/festivals/1982/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14429, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1982-01-13T20:42:29-06:00", "utc": "1982-01-14T02:42:29Z", "ms": 379824148822.85406 }, "end": { "local": "1982-02-12T09:44:07-06:00", "utc": "1982-02-12T15:44:07Z", "ms": 382376646642.36884 } }, "span": { "of": "transit", "start": { "local": "1982-01-13T20:42:29-06:00", "utc": "1982-01-14T02:42:29Z", "ms": 379824148822.85406 }, "end": { "local": "1982-01-13T20:42:29-06:00", "utc": "1982-01-14T02:42:29Z", "ms": 379824148822.85406 } }, "kaala": "sunset-day", "days": [ { "local_date": "1982-01-13", "window": { "start": { "local": "1982-01-12T16:40:53-06:00", "utc": "1982-01-12T22:40:53Z", "ms": 379723252704.5344 }, "end": { "local": "1982-01-13T16:42:00-06:00", "utc": "1982-01-13T22:42:00Z", "ms": 379809719545.5795 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1982-01-14", "window": { "start": { "local": "1982-01-13T16:42:00-06:00", "utc": "1982-01-13T22:42:00Z", "ms": 379809719545.5795 }, "end": { "local": "1982-01-14T16:43:07-06:00", "utc": "1982-01-14T22:43:07Z", "ms": 379896187403.4674 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1982-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 20:42 on Wed 13 Jan.", "fact": "1982-01-14T02:42:29Z · 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 16:42, and the day of the 14th ends at 16:43.", "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 14429 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Thursday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Chicago, 1982: Friday 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": "1982-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1982-01-14", "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": "1982-01-14", "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 Chicago, Mattu Pongal 1982 falls on Friday 15 January. It is kept the day after Pongal, which falls on Thursday 14 January. The Sun enters Makara at 20:42 on Wed 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/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-01-20", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15835, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-01-19T11:38:03-06:00", "utc": "1982-01-19T17:38:03Z", "ms": 380309882605.5366 }, "end": { "local": "1982-01-20T14:19:17-06:00", "utc": "1982-01-20T20:19:17Z", "ms": 380405957191.3644 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-01-19T11:38:03-06:00", "utc": "1982-01-19T17:38:03Z", "ms": 380309882605.5366 }, "end": { "local": "1982-01-20T14:19:17-06:00", "utc": "1982-01-20T20:19:17Z", "ms": 380405957191.3644 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-01-19", "window": { "start": { "local": "1982-01-19T07:14:08-06:00", "utc": "1982-01-19T13:14:08Z", "ms": 380294048068.43256 }, "end": { "local": "1982-01-19T07:14:08-06:00", "utc": "1982-01-19T13:14:08Z", "ms": 380294048068.43256 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-01-20", "window": { "start": { "local": "1982-01-20T07:13:32-06:00", "utc": "1982-01-20T13:13:32Z", "ms": 380380411672.3169 }, "end": { "local": "1982-01-20T07:13:32-06:00", "utc": "1982-01-20T13:13:32Z", "ms": 380380411672.3169 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:38 on Tue 19 Jan to 14:19 on Wed 20 Jan.", "fact": "1982-01-19T17:38:03Z → 1982-01-20T20:19:17Z" }, { "step": "kaala", "text": "Sunrise is at 07:14 on the 19th and 07:14 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 15835 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Chicago, 1982: Wednesday 20 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": "1982-01-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-20", "confidence": "determinate" } ], "quote": "In Chicago, Ṣaṭtilā Ekādaśī 1982 falls on Wednesday 20 January. Ekādaśī runs from 11:38 on Tue 19 Jan to 14:19 on Wed 20 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-01-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-01-22", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-22", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 296, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-01-21T16:56:23-06:00", "utc": "1982-01-21T22:56:23Z", "ms": 380501782560.0647 }, "end": { "local": "1982-01-22T19:19:14-06:00", "utc": "1982-01-23T01:19:14Z", "ms": 380596753971.7879 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-01-21T16:56:23-06:00", "utc": "1982-01-21T22:56:23Z", "ms": 380501782560.0647 }, "end": { "local": "1982-01-22T19:19:14-06:00", "utc": "1982-01-23T01:19:14Z", "ms": 380596753971.7879 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-01-21", "window": { "start": { "local": "1982-01-21T16:51:26-06:00", "utc": "1982-01-21T22:51:26Z", "ms": 380501486202.32184 }, "end": { "local": "1982-01-21T18:46:12-06:00", "utc": "1982-01-22T00:46:12Z", "ms": 380508372384.52527 } }, "covered_min": 110, "window_min": 115, "qualifies": true }, { "local_date": "1982-01-22", "window": { "start": { "local": "1982-01-22T16:52:40-06:00", "utc": "1982-01-22T22:52:40Z", "ms": 380587960189.4306 }, "end": { "local": "1982-01-22T18:47:11-06:00", "utc": "1982-01-23T00:47:11Z", "ms": 380594830819.3785 } }, "covered_min": 115, "window_min": 115, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 16:56 on Thu 21 Jan to 19:19 on Fri 22 Jan.", "fact": "1982-01-21T22:56:23Z → 1982-01-23T01:19:14Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:51–18:46 on the 21st, 16:53–18:47 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 110 of 115 minutes on the 21st and 115 of 115 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 296 s < 300 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 1982: Friday 22 January.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-01-22", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-21", "confidence": "boundary" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 1982 falls on Friday 22 January. Trayodaśī runs from 16:56 on Thu 21 Jan to 19:19 on Fri 22 Jan and covers all of pradoṣa that evening. It also reaches the previous evening for 110 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 4 min 56 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-01-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/shivaratri?on=1982-01-22", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8265, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-01-22T19:19:14-06:00", "utc": "1982-01-23T01:19:14Z", "ms": 380596753971.7879 }, "end": { "local": "1982-01-23T21:20:35-06:00", "utc": "1982-01-24T03:20:35Z", "ms": 380690434607.7875 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-01-22T19:19:14-06:00", "utc": "1982-01-23T01:19:14Z", "ms": 380596753971.7879 }, "end": { "local": "1982-01-23T21:20:35-06:00", "utc": "1982-01-24T03:20:35Z", "ms": 380690434607.7875 } }, "kaala": "nishita", "days": [ { "local_date": "1982-01-22", "window": { "start": { "local": "1982-01-22T23:38:05-06:00", "utc": "1982-01-23T05:38:05Z", "ms": 380612285051.73505 }, "end": { "local": "1982-01-23T00:26:05-06:00", "utc": "1982-01-23T06:26:05Z", "ms": 380615165051.73505 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-01-23", "window": { "start": { "local": "1982-01-23T23:38:20-06:00", "utc": "1982-01-24T05:38:20Z", "ms": 380698699960.7373 }, "end": { "local": "1982-01-24T00:26:20-06:00", "utc": "1982-01-24T06:26:20Z", "ms": 380701579960.7373 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 19:19 on Fri 22 Jan to 21:21 on Sat 23 Jan.", "fact": "1982-01-23T01:19:14Z → 1982-01-24T03:20:35Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:38–00:26 on the 22nd, 23:38–00:26 on the 23rd.", "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 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8265 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 1982: Friday 22 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": "1982-01-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-22", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 1982 falls on Friday 22 January. Caturdaśī runs from 19:19 on Fri 22 Jan to 21:21 on Sat 23 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/shivaratri?on=1982-01-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28556, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-01-22T19:19:14-06:00", "utc": "1982-01-23T01:19:14Z", "ms": 380596753971.7879 }, "end": { "local": "1982-01-23T21:20:35-06:00", "utc": "1982-01-24T03:20:35Z", "ms": 380690434607.7875 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-01-22T19:19:14-06:00", "utc": "1982-01-23T01:19:14Z", "ms": 380596753971.7879 }, "end": { "local": "1982-01-23T21:20:35-06:00", "utc": "1982-01-24T03:20:35Z", "ms": 380690434607.7875 } }, "kaala": "arunodaya", "days": [ { "local_date": "1982-01-23", "window": { "start": { "local": "1982-01-23T05:16:59-06:00", "utc": "1982-01-23T11:16:59Z", "ms": 380632619284.0916 }, "end": { "local": "1982-01-23T07:11:30-06:00", "utc": "1982-01-23T13:11:30Z", "ms": 380639489914.0395 } }, "covered_min": 115, "window_min": 115, "qualifies": true }, { "local_date": "1982-01-24", "window": { "start": { "local": "1982-01-24T05:16:30-06:00", "utc": "1982-01-24T11:16:30Z", "ms": 380718990489.0848 }, "end": { "local": "1982-01-24T07:10:45-06:00", "utc": "1982-01-24T13:10:45Z", "ms": 380725845226.66565 } }, "covered_min": 0, "window_min": 114, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 19:19 on Fri 22 Jan to 21:21 on Sat 23 Jan.", "fact": "1982-01-23T01:19:14Z → 1982-01-24T03:20:35Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:17–07:11 on the 23rd, 05:17–07:11 on the 24th.", "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 115 of 115 minutes on the 23rd and 0 of 114 on the 24th.", "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 28556 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Chicago, 1982: Saturday 23 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Yama tarpana (covering a period of 4 ghatikas before sunrise)" } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-01-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-23", "confidence": "determinate" } ], "quote": "In Chicago, Yama Tarpaṇa 1982 falls on Saturday 23 January. Caturdaśī runs from 19:19 on Fri 22 Jan to 21:21 on Sat 23 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38824, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-01-28T00:52:46-06:00", "utc": "1982-01-28T06:52:46Z", "ms": 381048765959.09106 }, "end": { "local": "1982-01-29T00:36:42-06:00", "utc": "1982-01-29T06:36:42Z", "ms": 381134202439.59644 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-01-28T00:52:46-06:00", "utc": "1982-01-28T06:52:46Z", "ms": 381048765959.09106 }, "end": { "local": "1982-01-29T00:36:42-06:00", "utc": "1982-01-29T06:36:42Z", "ms": 381134202439.59644 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-01-28", "window": { "start": { "local": "1982-01-28T11:39:50-06:00", "utc": "1982-01-28T17:39:50Z", "ms": 381087589950.57776 }, "end": { "local": "1982-01-28T12:27:50-06:00", "utc": "1982-01-28T18:27:50Z", "ms": 381090469950.57776 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-01-29", "window": { "start": { "local": "1982-01-29T11:40:01-06:00", "utc": "1982-01-29T17:40:01Z", "ms": 381174001014.44727 }, "end": { "local": "1982-01-29T12:28:01-06:00", "utc": "1982-01-29T18:28:01Z", "ms": 381176881014.44727 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:53 on Thu 28 Jan to 00:37 on Fri 29 Jan.", "fact": "1982-01-28T06:52:46Z → 1982-01-29T06:36:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 28th, 11:40–12:28 on the 29th.", "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 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 38824 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Chicago, 1982: Thursday 28 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-28", "confidence": "determinate" } ], "quote": "In Chicago, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1982 falls on Thursday 28 January. Caturthī runs from 00:53 on Thu 28 Jan to 00:37 on Fri 29 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20619, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-01-28T00:52:46-06:00", "utc": "1982-01-28T06:52:46Z", "ms": 381048765959.09106 }, "end": { "local": "1982-01-29T00:36:42-06:00", "utc": "1982-01-29T06:36:42Z", "ms": 381134202439.59644 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-01-28T00:52:46-06:00", "utc": "1982-01-28T06:52:46Z", "ms": 381048765959.09106 }, "end": { "local": "1982-01-29T00:36:42-06:00", "utc": "1982-01-29T06:36:42Z", "ms": 381134202439.59644 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-01-27", "window": { "start": { "local": "1982-01-27T16:58:57-06:00", "utc": "1982-01-27T22:58:57Z", "ms": 381020336856.693 }, "end": { "local": "1982-01-27T18:52:05-06:00", "utc": "1982-01-28T00:52:05Z", "ms": 381027124838.1943 } }, "covered_min": 0, "window_min": 113, "qualifies": false }, { "local_date": "1982-01-28", "window": { "start": { "local": "1982-01-28T17:00:13-06:00", "utc": "1982-01-28T23:00:13Z", "ms": 381106813183.2029 }, "end": { "local": "1982-01-28T18:53:04-06:00", "utc": "1982-01-29T00:53:04Z", "ms": 381113583731.9174 } }, "covered_min": 113, "window_min": 113, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:53 on Thu 28 Jan to 00:37 on Fri 29 Jan.", "fact": "1982-01-28T06:52:46Z → 1982-01-29T06:36:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:59–18:52 on the 27th, 17:00–18:53 on the 28th.", "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 113 minutes on the 27th and 113 of 113 on the 28th.", "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 20619 s" }, { "step": "ruling", "text": "Tila Caturthī, Chicago, 1982: Thursday 28 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "tila-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-28", "confidence": "determinate" } ], "quote": "In Chicago, Tila Caturthī 1982 falls on Thursday 28 January. Caturthī runs from 00:53 on Thu 28 Jan to 00:37 on Fri 29 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39799, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1982-01-29T00:36:42-06:00", "utc": "1982-01-29T06:36:42Z", "ms": 381134202439.59644 }, "end": { "local": "1982-01-29T23:55:02-06:00", "utc": "1982-01-30T05:55:02Z", "ms": 381218102202.32275 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-01-29T00:36:42-06:00", "utc": "1982-01-29T06:36:42Z", "ms": 381134202439.59644 }, "end": { "local": "1982-01-29T23:55:02-06:00", "utc": "1982-01-30T05:55:02Z", "ms": 381218102202.32275 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-01-29", "window": { "start": { "local": "1982-01-29T11:40:01-06:00", "utc": "1982-01-29T17:40:01Z", "ms": 381174001014.44727 }, "end": { "local": "1982-01-29T12:28:01-06:00", "utc": "1982-01-29T18:28:01Z", "ms": 381176881014.44727 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-01-30", "window": { "start": { "local": "1982-01-30T11:40:11-06:00", "utc": "1982-01-30T17:40:11Z", "ms": 381260411239.55493 }, "end": { "local": "1982-01-30T12:28:11-06:00", "utc": "1982-01-30T18:28:11Z", "ms": 381263291239.55493 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 00:37 on Fri 29 Jan to 23:55 on Fri 29 Jan.", "fact": "1982-01-29T06:36:42Z → 1982-01-30T05:55:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 29th, 11:40–12:28 on the 30th.", "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 29th and 0 of 48 on the 30th.", "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 39799 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Chicago, 1982: Friday 29 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-01-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-29", "confidence": "determinate" } ], "quote": "In Chicago, Śrī Pañcamī 1982 falls on Friday 29 January. Pañcamī runs from 00:37 on Fri 29 Jan to 23:55 on Fri 29 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39799, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1982-01-29T00:36:42-06:00", "utc": "1982-01-29T06:36:42Z", "ms": 381134202439.59644 }, "end": { "local": "1982-01-29T23:55:02-06:00", "utc": "1982-01-30T05:55:02Z", "ms": 381218102202.32275 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-01-29T00:36:42-06:00", "utc": "1982-01-29T06:36:42Z", "ms": 381134202439.59644 }, "end": { "local": "1982-01-29T23:55:02-06:00", "utc": "1982-01-30T05:55:02Z", "ms": 381218102202.32275 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-01-29", "window": { "start": { "local": "1982-01-29T11:40:01-06:00", "utc": "1982-01-29T17:40:01Z", "ms": 381174001014.44727 }, "end": { "local": "1982-01-29T12:28:01-06:00", "utc": "1982-01-29T18:28:01Z", "ms": 381176881014.44727 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-01-30", "window": { "start": { "local": "1982-01-30T11:40:11-06:00", "utc": "1982-01-30T17:40:11Z", "ms": 381260411239.55493 }, "end": { "local": "1982-01-30T12:28:11-06:00", "utc": "1982-01-30T18:28:11Z", "ms": 381263291239.55493 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 00:37 on Fri 29 Jan to 23:55 on Fri 29 Jan.", "fact": "1982-01-29T06:36:42Z → 1982-01-30T05:55:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 29th, 11:40–12:28 on the 30th.", "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 29th and 0 of 48 on the 30th.", "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 39799 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Chicago, 1982: Friday 29 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasanta-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-01-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-29", "confidence": "determinate" } ], "quote": "In Chicago, Vasanta Pañcamī 1982 falls on Friday 29 January. Pañcamī runs from 00:37 on Fri 29 Jan to 23:55 on Fri 29 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-01-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22999, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1982-01-30T22:49:04-06:00", "utc": "1982-01-31T04:49:04Z", "ms": 381300544213.7966 }, "end": { "local": "1982-01-31T21:20:15-06:00", "utc": "1982-02-01T03:20:15Z", "ms": 381381615319.8842 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-01-30T22:49:04-06:00", "utc": "1982-01-31T04:49:04Z", "ms": 381300544213.7966 }, "end": { "local": "1982-01-31T21:20:15-06:00", "utc": "1982-02-01T03:20:15Z", "ms": 381381615319.8842 } }, "kaala": "arunodaya", "days": [ { "local_date": "1982-01-31", "window": { "start": { "local": "1982-01-31T05:12:23-06:00", "utc": "1982-01-31T11:12:23Z", "ms": 381323543065.55 }, "end": { "local": "1982-01-31T07:04:38-06:00", "utc": "1982-01-31T13:04:38Z", "ms": 381330277928.76465 } }, "covered_min": 112, "window_min": 112, "qualifies": true }, { "local_date": "1982-02-01", "window": { "start": { "local": "1982-02-01T05:11:41-06:00", "utc": "1982-02-01T11:11:41Z", "ms": 381409901415.3125 }, "end": { "local": "1982-02-01T07:03:38-06:00", "utc": "1982-02-01T13:03:38Z", "ms": 381416618046.1294 } }, "covered_min": 0, "window_min": 112, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 22:49 on Sat 30 Jan to 21:20 on Sun 31 Jan.", "fact": "1982-01-31T04:49:04Z → 1982-02-01T03:20:15Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:12–07:05 on the 31st, 05:12–07:04 on the 1st.", "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 112 of 112 minutes on the 31st and 0 of 112 on the 1st.", "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 22999 s" }, { "step": "ruling", "text": "Ratha Saptamī, Chicago, 1982: Sunday 31 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-01-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-01-31", "confidence": "determinate" } ], "quote": "In Chicago, Ratha Saptamī 1982 falls on Sunday 31 January. Saptamī runs from 22:49 on Sat 30 Jan to 21:20 on Sun 31 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-02-04", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-02-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19259, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-02-03T14:57:23-06:00", "utc": "1982-02-03T20:57:23Z", "ms": 381617843143.5212 }, "end": { "local": "1982-02-04T12:21:27-06:00", "utc": "1982-02-04T18:21:27Z", "ms": 381694887467.8216 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-02-03T14:57:23-06:00", "utc": "1982-02-03T20:57:23Z", "ms": 381617843143.5212 }, "end": { "local": "1982-02-04T12:21:27-06:00", "utc": "1982-02-04T18:21:27Z", "ms": 381694887467.8216 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-02-03", "window": { "start": { "local": "1982-02-03T07:01:33-06:00", "utc": "1982-02-03T13:01:33Z", "ms": 381589293065.9433 }, "end": { "local": "1982-02-03T07:01:33-06:00", "utc": "1982-02-03T13:01:33Z", "ms": 381589293065.9433 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-02-04", "window": { "start": { "local": "1982-02-04T07:00:28-06:00", "utc": "1982-02-04T13:00:28Z", "ms": 381675628045.137 }, "end": { "local": "1982-02-04T07:00:28-06:00", "utc": "1982-02-04T13:00:28Z", "ms": 381675628045.137 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:57 on Wed 3 Feb to 12:21 on Thu 4 Feb.", "fact": "1982-02-03T20:57:23Z → 1982-02-04T18:21:27Z" }, { "step": "kaala", "text": "Sunrise is at 07:02 on the 3rd and 07:00 on the 4th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 3rd and is 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 19259 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Chicago, 1982: Thursday 4 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": "1982-02-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-02-04", "confidence": "determinate" } ], "quote": "In Chicago, Jayā Ekādaśī 1982 falls on Thursday 4 February. Ekādaśī runs from 14:57 on Wed 3 Feb to 12:21 on Thu 4 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-02-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-02-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 442, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1982-02-04T12:21:27-06:00", "utc": "1982-02-04T18:21:27Z", "ms": 381694887467.8216 }, "end": { "local": "1982-02-05T09:38:59-06:00", "utc": "1982-02-05T15:38:59Z", "ms": 381771538718.5668 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-02-04T12:21:27-06:00", "utc": "1982-02-04T18:21:27Z", "ms": 381694887467.8216 }, "end": { "local": "1982-02-05T09:38:59-06:00", "utc": "1982-02-05T15:38:59Z", "ms": 381771538718.5668 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-02-04", "window": { "start": { "local": "1982-02-04T11:40:50-06:00", "utc": "1982-02-04T17:40:50Z", "ms": 381692449713.2934 }, "end": { "local": "1982-02-04T12:28:50-06:00", "utc": "1982-02-04T18:28:50Z", "ms": 381695329713.2934 } }, "covered_min": 7, "window_min": 48, "qualifies": true }, { "local_date": "1982-02-05", "window": { "start": { "local": "1982-02-05T11:40:55-06:00", "utc": "1982-02-05T17:40:55Z", "ms": 381778854892.4568 }, "end": { "local": "1982-02-05T12:28:55-06:00", "utc": "1982-02-05T18:28:55Z", "ms": 381781734892.4568 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 12:21 on Thu 4 Feb to 09:39 on Fri 5 Feb.", "fact": "1982-02-04T18:21:27Z → 1982-02-05T15:38:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 4th, 11:41–12:29 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 7 of 48 minutes on the 4th and 0 of 48 on the 5th.", "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 442 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Chicago, 1982: Thursday 4 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": "1982-02-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-02-04", "confidence": "determinate" } ], "quote": "In Chicago, Bhīṣma Dvādaśī 1982 falls on Thursday 4 February. Dvādaśī runs from 12:21 on Thu 4 Feb to 09:39 on Fri 5 Feb and covers 7 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/pradosha-vrata?on=1982-02-05", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-02-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27090, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-02-05T09:38:59-06:00", "utc": "1982-02-05T15:38:59Z", "ms": 381771538718.5668 }, "end": { "local": "1982-02-06T06:56:01-06:00", "utc": "1982-02-06T12:56:01Z", "ms": 381848160636.5466 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-02-05T09:38:59-06:00", "utc": "1982-02-05T15:38:59Z", "ms": 381771538718.5668 }, "end": { "local": "1982-02-06T06:56:01-06:00", "utc": "1982-02-06T12:56:01Z", "ms": 381848160636.5466 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-02-05", "window": { "start": { "local": "1982-02-05T17:10:28-06:00", "utc": "1982-02-05T23:10:28Z", "ms": 381798628394.3931 }, "end": { "local": "1982-02-05T19:00:50-06:00", "utc": "1982-02-06T01:00:50Z", "ms": 381805250360.891 } }, "covered_min": 110, "window_min": 110, "qualifies": true }, { "local_date": "1982-02-06", "window": { "start": { "local": "1982-02-06T17:11:45-06:00", "utc": "1982-02-06T23:11:45Z", "ms": 381885105352.3992 }, "end": { "local": "1982-02-06T19:01:48-06:00", "utc": "1982-02-07T01:01:48Z", "ms": 381891707751.3144 } }, "covered_min": 0, "window_min": 110, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 09:39 on Fri 5 Feb to 06:56 on Sat 6 Feb.", "fact": "1982-02-05T15:38:59Z → 1982-02-06T12:56:01Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:10–19:01 on the 5th, 17:12–19:02 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 110 of 110 minutes on the 5th and 0 of 110 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 27090 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 1982: Friday 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": "1982-02-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-02-05", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 1982 falls on Friday 5 February. Trayodaśī runs from 09:39 on Fri 5 Feb to 06:56 on Sat 6 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-02-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-02-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26492, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-02-07T04:19:30-06:00", "utc": "1982-02-07T10:19:30Z", "ms": 381925170467.6877 }, "end": { "local": "1982-02-08T01:57:07-06:00", "utc": "1982-02-08T07:57:07Z", "ms": 382003026597.3295 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1982-02-07T04:19:30-06:00", "utc": "1982-02-07T10:19:30Z", "ms": 381925170467.6877 }, "end": { "local": "1982-02-08T01:57:07-06:00", "utc": "1982-02-08T07:57:07Z", "ms": 382003026597.3295 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-02-07", "window": { "start": { "local": "1982-02-07T11:41:03-06:00", "utc": "1982-02-07T17:41:03Z", "ms": 381951662789.1067 }, "end": { "local": "1982-02-07T12:29:03-06:00", "utc": "1982-02-07T18:29:03Z", "ms": 381954542789.1067 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-02-08", "window": { "start": { "local": "1982-02-08T11:41:06-06:00", "utc": "1982-02-08T17:41:06Z", "ms": 382038065527.5503 }, "end": { "local": "1982-02-08T12:29:06-06:00", "utc": "1982-02-08T18:29:06Z", "ms": 382040945527.5503 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 04:20 on Sun 7 Feb to 01:57 on Mon 8 Feb.", "fact": "1982-02-07T10:19:30Z → 1982-02-08T07:57:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 7th, 11:41–12:29 on the 8th.", "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 7th and 0 of 48 on the 8th.", "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 26492 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Chicago, 1982: Sunday 7 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": "1982-02-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-02-07", "confidence": "determinate" } ], "quote": "In Chicago, Māghī Pūrṇimā 1982 falls on Sunday 7 February. Pūrṇimā runs from 04:20 on Sun 7 Feb to 01:57 on Mon 8 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/sankashta-chaturthi?on=1982-02-11", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-02-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 595, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-02-10T21:33:18-06:00", "utc": "1982-02-11T03:33:18Z", "ms": 382246397787.16833 }, "end": { "local": "1982-02-11T21:22:33-06:00", "utc": "1982-02-12T03:22:33Z", "ms": 382332153049.739 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1982-02-10T21:33:18-06:00", "utc": "1982-02-11T03:33:18Z", "ms": 382246397787.16833 }, "end": { "local": "1982-02-11T21:22:33-06:00", "utc": "1982-02-12T03:22:33Z", "ms": 382332153049.739 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-02-10", "window": { "start": { "local": "1982-02-10T20:07:48-06:00", "utc": "1982-02-11T02:07:48Z", "ms": 382241267621.5605 }, "end": { "local": "1982-02-10T20:07:48-06:00", "utc": "1982-02-11T02:07:48Z", "ms": 382241267621.5605 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-02-11", "window": { "start": { "local": "1982-02-11T21:12:38-06:00", "utc": "1982-02-12T03:12:38Z", "ms": 382331557572.67944 }, "end": { "local": "1982-02-11T21:12:38-06:00", "utc": "1982-02-12T03:12:38Z", "ms": 382331557572.67944 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:33 on Wed 10 Feb to 21:23 on Thu 11 Feb.", "fact": "1982-02-11T03:33:18Z → 1982-02-12T03:22:33Z" }, { "step": "kaala", "text": "Moonrise is at 20:08 on the 10th and 21:13 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 10th and is on the 11th.", "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 595 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 1982: Thursday 11 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": "1982-02-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-02-11", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 1982 falls on Thursday 11 February. Caturthī runs from 21:33 on Wed 10 Feb to 21:23 on Thu 11 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/sankashta-chaturthi?on=1982-02-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/ekadashi?on=1982-02-19", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-02-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7652, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-02-18T08:50:16-06:00", "utc": "1982-02-18T14:50:16Z", "ms": 382891816430.58075 }, "end": { "local": "1982-02-19T11:11:11-06:00", "utc": "1982-02-19T17:11:11Z", "ms": 382986670735.94855 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1982-02-18T08:50:16-06:00", "utc": "1982-02-18T14:50:16Z", "ms": 382891816430.58075 }, "end": { "local": "1982-02-19T11:11:11-06:00", "utc": "1982-02-19T17:11:11Z", "ms": 382986670735.94855 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-02-18", "window": { "start": { "local": "1982-02-18T06:42:45-06:00", "utc": "1982-02-18T12:42:45Z", "ms": 382884164556.9835 }, "end": { "local": "1982-02-18T06:42:45-06:00", "utc": "1982-02-18T12:42:45Z", "ms": 382884164556.9835 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-02-19", "window": { "start": { "local": "1982-02-19T06:41:19-06:00", "utc": "1982-02-19T12:41:19Z", "ms": 382970479198.353 }, "end": { "local": "1982-02-19T06:41:19-06:00", "utc": "1982-02-19T12:41:19Z", "ms": 382970479198.353 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:50 on Thu 18 Feb to 11:11 on Fri 19 Feb.", "fact": "1982-02-18T14:50:16Z → 1982-02-19T17:11:11Z" }, { "step": "kaala", "text": "Sunrise is at 06:43 on the 18th and 06:41 on the 19th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 18th and is on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7652 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Chicago, 1982: Friday 19 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": "1982-02-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-02-19", "confidence": "determinate" } ], "quote": "In Chicago, Vijayā Ekādaśī 1982 falls on Friday 19 February. Ekādaśī runs from 08:50 on Thu 18 Feb to 11:11 on Fri 19 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-02-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-02-20", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-02-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11164, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-02-20T13:05:02-06:00", "utc": "1982-02-20T19:05:02Z", "ms": 383079901521.7827 }, "end": { "local": "1982-02-21T14:24:38-06:00", "utc": "1982-02-21T20:24:38Z", "ms": 383171077882.9277 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1982-02-20T13:05:02-06:00", "utc": "1982-02-20T19:05:02Z", "ms": 383079901521.7827 }, "end": { "local": "1982-02-21T14:24:38-06:00", "utc": "1982-02-21T20:24:38Z", "ms": 383171077882.9277 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-02-20", "window": { "start": { "local": "1982-02-20T17:29:27-06:00", "utc": "1982-02-20T23:29:27Z", "ms": 383095767433.693 }, "end": { "local": "1982-02-20T19:14:39-06:00", "utc": "1982-02-21T01:14:39Z", "ms": 383102079154.53845 } }, "covered_min": 105, "window_min": 105, "qualifies": true }, { "local_date": "1982-02-21", "window": { "start": { "local": "1982-02-21T17:30:42-06:00", "utc": "1982-02-21T23:30:42Z", "ms": 383182241648.1147 }, "end": { "local": "1982-02-21T19:15:32-06:00", "utc": "1982-02-22T01:15:32Z", "ms": 383188531682.761 } }, "covered_min": 0, "window_min": 105, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:05 on Sat 20 Feb to 14:25 on Sun 21 Feb.", "fact": "1982-02-20T19:05:02Z → 1982-02-21T20:24:38Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:29–19:15 on the 20th, 17:31–19:16 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 105 of 105 minutes on the 20th and 0 of 105 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 11164 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 1982: Saturday 20 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": "1982-02-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-02-20", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 1982 falls on Saturday 20 February. Trayodaśī runs from 13:05 on Sat 20 Feb to 14:25 on Sun 21 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-02-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-02-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30757, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-02-21T14:24:38-06:00", "utc": "1982-02-21T20:24:38Z", "ms": 383171077882.9277 }, "end": { "local": "1982-02-22T15:07:05-06:00", "utc": "1982-02-22T21:07:05Z", "ms": 383260024970.673 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1982-02-21T14:24:38-06:00", "utc": "1982-02-21T20:24:38Z", "ms": 383171077882.9277 }, "end": { "local": "1982-02-22T15:07:05-06:00", "utc": "1982-02-22T21:07:05Z", "ms": 383260024970.673 } }, "kaala": "nishita", "days": [ { "local_date": "1982-02-21", "window": { "start": { "local": "1982-02-21T23:39:49-06:00", "utc": "1982-02-22T05:39:49Z", "ms": 383204389278.0382 }, "end": { "local": "1982-02-22T00:27:49-06:00", "utc": "1982-02-22T06:27:49Z", "ms": 383207269278.0382 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-02-22", "window": { "start": { "local": "1982-02-22T23:39:42-06:00", "utc": "1982-02-23T05:39:42Z", "ms": 383290781550.1218 }, "end": { "local": "1982-02-23T00:27:42-06:00", "utc": "1982-02-23T06:27:42Z", "ms": 383293661550.1218 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:25 on Sun 21 Feb to 15:07 on Mon 22 Feb.", "fact": "1982-02-21T20:24:38Z → 1982-02-22T21:07:05Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:40–00:28 on the 21st, 23:40–00:28 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 30757 s" }, { "step": "ruling", "text": "Mahāśivarātri, Chicago, 1982: Sunday 21 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "maha-shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Mahasivaratri (nisithavyapini) — In some opinion it is to be observed on nisitha and in some opinion on pradosa. If occurs on two successive nisithas then according to Hemadri it is to be observed on the first day and according to Madhava, to be observed on the second day" } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "disputed", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-02-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-02-21", "confidence": "determinate" } ], "quote": "In Chicago, Mahāśivarātri 1982 falls on Sunday 21 February. Caturdaśī runs from 14:25 on Sun 21 Feb to 15:07 on Mon 22 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/vinayaka-chaturthi?on=1982-02-27", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-02-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 316, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-02-26T12:33:08-06:00", "utc": "1982-02-26T18:33:08Z", "ms": 383596387601.68726 }, "end": { "local": "1982-02-27T10:58:21-06:00", "utc": "1982-02-27T16:58:21Z", "ms": 383677101252.203 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1982-02-26T12:33:08-06:00", "utc": "1982-02-26T18:33:08Z", "ms": 383596387601.68726 }, "end": { "local": "1982-02-27T10:58:21-06:00", "utc": "1982-02-27T16:58:21Z", "ms": 383677101252.203 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-02-26", "window": { "start": { "local": "1982-02-26T11:39:51-06:00", "utc": "1982-02-26T17:39:51Z", "ms": 383593191137.3781 }, "end": { "local": "1982-02-26T12:27:51-06:00", "utc": "1982-02-26T18:27:51Z", "ms": 383596071137.3781 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-02-27", "window": { "start": { "local": "1982-02-27T11:39:41-06:00", "utc": "1982-02-27T17:39:41Z", "ms": 383679580895.70935 }, "end": { "local": "1982-02-27T12:27:41-06:00", "utc": "1982-02-27T18:27:41Z", "ms": 383682460895.70935 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:33 on Fri 26 Feb to 10:58 on Sat 27 Feb.", "fact": "1982-02-26T18:33:08Z → 1982-02-27T16:58:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 26th, 11:40–12:28 on the 27th.", "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 26th and 0 of 48 on the 27th.", "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 316 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 1982: Saturday 27 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-02-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-02-26", "confidence": "boundary" } ], "quote": "In Chicago, Vināyaka Caturthī 1982 falls on Saturday 27 February. Caturthī runs from 12:33 on Fri 26 Feb to 10:58 on Sat 27 Feb, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/chicago/festivals/1982/vinayaka-chaturthi?on=1982-02-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/ekadashi?on=1982-03-05", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26038, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-03-04T23:05:50-06:00", "utc": "1982-03-05T05:05:50Z", "ms": 384152750282.12366 }, "end": { "local": "1982-03-05T21:05:11-06:00", "utc": "1982-03-06T03:05:11Z", "ms": 384231910909.39465 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1982-03-04T23:05:50-06:00", "utc": "1982-03-05T05:05:50Z", "ms": 384152750282.12366 }, "end": { "local": "1982-03-05T21:05:11-06:00", "utc": "1982-03-06T03:05:11Z", "ms": 384231910909.39465 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-03-05", "window": { "start": { "local": "1982-03-05T06:19:48-06:00", "utc": "1982-03-05T12:19:48Z", "ms": 384178787990.0425 }, "end": { "local": "1982-03-05T06:19:48-06:00", "utc": "1982-03-05T12:19:48Z", "ms": 384178787990.0425 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-03-06", "window": { "start": { "local": "1982-03-06T06:18:10-06:00", "utc": "1982-03-06T12:18:10Z", "ms": 384265090202.5668 }, "end": { "local": "1982-03-06T06:18:10-06:00", "utc": "1982-03-06T12:18:10Z", "ms": 384265090202.5668 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:06 on Thu 4 Mar to 21:05 on Fri 5 Mar.", "fact": "1982-03-05T05:05:50Z → 1982-03-06T03:05:11Z" }, { "step": "kaala", "text": "Sunrise is at 06:20 on the 5th and 06:18 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26038 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Chicago, 1982: Friday 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": "1982-03-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-05", "confidence": "determinate" } ], "quote": "In Chicago, Āmalakī Ekādaśī 1982 falls on Friday 5 March. Ekādaśī runs from 23:06 on Thu 4 Mar to 21:05 on Fri 5 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-03-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-03-06", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 965, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-03-06T19:10:16-06:00", "utc": "1982-03-07T01:10:16Z", "ms": 384311416063.6953 }, "end": { "local": "1982-03-07T17:25:06-06:00", "utc": "1982-03-07T23:25:06Z", "ms": 384391506385.2927 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1982-03-06T19:10:16-06:00", "utc": "1982-03-07T01:10:16Z", "ms": 384311416063.6953 }, "end": { "local": "1982-03-07T17:25:06-06:00", "utc": "1982-03-07T23:25:06Z", "ms": 384391506385.2927 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-03-06", "window": { "start": { "local": "1982-03-06T17:46:19-06:00", "utc": "1982-03-06T23:46:19Z", "ms": 384306378831.7226 }, "end": { "local": "1982-03-06T19:26:21-06:00", "utc": "1982-03-07T01:26:21Z", "ms": 384312380568.4351 } }, "covered_min": 16, "window_min": 100, "qualifies": true }, { "local_date": "1982-03-07", "window": { "start": { "local": "1982-03-07T17:47:29-06:00", "utc": "1982-03-07T23:47:29Z", "ms": 384392848762.88074 }, "end": { "local": "1982-03-07T19:27:08-06:00", "utc": "1982-03-08T01:27:08Z", "ms": 384398827993.0345 } }, "covered_min": 0, "window_min": 100, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:10 on Sat 6 Mar to 17:25 on Sun 7 Mar.", "fact": "1982-03-07T01:10:16Z → 1982-03-07T23:25:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:46–19:26 on the 6th, 17:47–19:27 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 16 of 100 minutes on the 6th and 0 of 100 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 965 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 1982: Saturday 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": "1982-03-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-06", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 1982 falls on Saturday 6 March. Trayodaśī runs from 19:10 on Sat 6 Mar to 17:25 on Sun 7 Mar and covers 16 of 100 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-03-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1492, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-03-08T15:54:46-06:00", "utc": "1982-03-08T21:54:46Z", "ms": 384472485748.18744 }, "end": { "local": "1982-03-09T14:45:08-06:00", "utc": "1982-03-09T20:45:08Z", "ms": 384554707572.9823 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1982-03-08T15:54:46-06:00", "utc": "1982-03-08T21:54:46Z", "ms": 384472485748.18744 }, "end": { "local": "1982-03-09T14:45:08-06:00", "utc": "1982-03-09T20:45:08Z", "ms": 384554707572.9823 } }, "kaala": "sayahna", "days": [ { "local_date": "1982-03-08", "window": { "start": { "local": "1982-03-08T15:29:53-06:00", "utc": "1982-03-08T21:29:53Z", "ms": 384470993330.5247 }, "end": { "local": "1982-03-08T17:48:38-06:00", "utc": "1982-03-08T23:48:38Z", "ms": 384479318415.89746 } }, "covered_min": 114, "window_min": 139, "qualifies": true }, { "local_date": "1982-03-09", "window": { "start": { "local": "1982-03-09T15:30:29-06:00", "utc": "1982-03-09T21:30:29Z", "ms": 384557428969.73334 }, "end": { "local": "1982-03-09T17:49:48-06:00", "utc": "1982-03-09T23:49:48Z", "ms": 384565787803.76294 } }, "covered_min": 0, "window_min": 139, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:55 on Mon 8 Mar to 14:45 on Tue 9 Mar.", "fact": "1982-03-08T21:54:46Z → 1982-03-09T20:45:08Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:30–17:49 on the 8th, 15:30–17:50 on the 9th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 114 of 139 minutes on the 8th and 0 of 139 on the 9th.", "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 1492 s" }, { "step": "ruling", "text": "Holikā Dahana, Chicago, 1982: Monday 8 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": "1982-03-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-08", "confidence": "determinate" } ], "quote": "In Chicago, Holikā Dahana 1982 falls on Monday 8 March. Pūrṇimā runs from 15:55 on Mon 8 Mar to 14:45 on Tue 9 Mar and covers 114 of 139 minutes of sāyāhna that late afternoon.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1492, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-03-08T15:54:46-06:00", "utc": "1982-03-08T21:54:46Z", "ms": 384472485748.18744 }, "end": { "local": "1982-03-09T14:45:08-06:00", "utc": "1982-03-09T20:45:08Z", "ms": 384554707572.9823 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1982-03-08T15:54:46-06:00", "utc": "1982-03-08T21:54:46Z", "ms": 384472485748.18744 }, "end": { "local": "1982-03-09T14:45:08-06:00", "utc": "1982-03-09T20:45:08Z", "ms": 384554707572.9823 } }, "kaala": "sayahna", "days": [ { "local_date": "1982-03-08", "window": { "start": { "local": "1982-03-08T15:29:53-06:00", "utc": "1982-03-08T21:29:53Z", "ms": 384470993330.5247 }, "end": { "local": "1982-03-08T17:48:38-06:00", "utc": "1982-03-08T23:48:38Z", "ms": 384479318415.89746 } }, "covered_min": 114, "window_min": 139, "qualifies": true }, { "local_date": "1982-03-09", "window": { "start": { "local": "1982-03-09T15:30:29-06:00", "utc": "1982-03-09T21:30:29Z", "ms": 384557428969.73334 }, "end": { "local": "1982-03-09T17:49:48-06:00", "utc": "1982-03-09T23:49:48Z", "ms": 384565787803.76294 } }, "covered_min": 0, "window_min": 139, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "1982-03-08", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:55 on Mon 8 Mar to 14:45 on Tue 9 Mar.", "fact": "1982-03-08T21:54:46Z → 1982-03-09T20:45:08Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:30–17:49 on the 8th, 15:30–17:50 on the 9th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 114 of 139 minutes on the 8th and 0 of 139 on the 9th.", "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 1492 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Monday 8 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Chicago, 1982: Tuesday 9 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": "1982-03-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-09", "confidence": "determinate" } ], "quote": "In Chicago, Holī 1982 falls on Tuesday 9 March. It is kept the day after Holikā Dahana, which falls on Monday 8 March. Pūrṇimā runs from 15:55 on Mon 8 Mar to 14:45 on Tue 9 Mar and covers 114 of 139 minutes of sāyāhna on the 8th.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28252, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1982-03-09T14:45:08-06:00", "utc": "1982-03-09T20:45:08Z", "ms": 384554707572.9823 }, "end": { "local": "1982-03-10T14:02:26-06:00", "utc": "1982-03-10T20:02:26Z", "ms": 384638545951.75287 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-03-09T14:45:08-06:00", "utc": "1982-03-09T20:45:08Z", "ms": 384554707572.9823 }, "end": { "local": "1982-03-10T14:02:26-06:00", "utc": "1982-03-10T20:02:26Z", "ms": 384638545951.75287 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-03-09", "window": { "start": { "local": "1982-03-09T06:13:14-06:00", "utc": "1982-03-09T12:13:14Z", "ms": 384523993633.6149 }, "end": { "local": "1982-03-09T06:13:14-06:00", "utc": "1982-03-09T12:13:14Z", "ms": 384523993633.6149 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-03-10", "window": { "start": { "local": "1982-03-10T06:11:34-06:00", "utc": "1982-03-10T12:11:34Z", "ms": 384610293825.4187 }, "end": { "local": "1982-03-10T06:11:34-06:00", "utc": "1982-03-10T12:11:34Z", "ms": 384610293825.4187 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 14:45 on Tue 9 Mar to 14:02 on Wed 10 Mar.", "fact": "1982-03-09T20:45:08Z → 1982-03-10T20:02:26Z" }, { "step": "kaala", "text": "Sunrise is at 06:13 on the 9th and 06:12 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā 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: purvaviddha → only-day · margin 28252 s" }, { "step": "ruling", "text": "Vasantotsava, Chicago, 1982: Wednesday 10 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": "1982-03-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-10", "confidence": "determinate" } ], "quote": "In Chicago, Vasantotsava 1982 falls on Wednesday 10 March. Pratipadā runs from 14:45 on Tue 9 Mar to 14:02 on Wed 10 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/sankashta-chaturthi?on=1982-03-12", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23817, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-03-12T14:19:48-06:00", "utc": "1982-03-12T20:19:48Z", "ms": 384812388106.32086 }, "end": { "local": "1982-03-13T15:26:07-06:00", "utc": "1982-03-13T21:26:07Z", "ms": 384902766691.33765 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-03-12T14:19:48-06:00", "utc": "1982-03-12T20:19:48Z", "ms": 384812388106.32086 }, "end": { "local": "1982-03-13T15:26:07-06:00", "utc": "1982-03-13T21:26:07Z", "ms": 384902766691.33765 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-03-12", "window": { "start": { "local": "1982-03-12T21:01:36-06:00", "utc": "1982-03-13T03:01:36Z", "ms": 384836496387.2401 }, "end": { "local": "1982-03-12T21:01:36-06:00", "utc": "1982-03-13T03:01:36Z", "ms": 384836496387.2401 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-03-13", "window": { "start": { "local": "1982-03-13T22:03:03-06:00", "utc": "1982-03-14T04:03:03Z", "ms": 384926583267.38574 }, "end": { "local": "1982-03-13T22:03:03-06:00", "utc": "1982-03-14T04:03:03Z", "ms": 384926583267.38574 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:20 on Fri 12 Mar to 15:26 on Sat 13 Mar.", "fact": "1982-03-12T20:19:48Z → 1982-03-13T21:26:07Z" }, { "step": "kaala", "text": "Moonrise is at 21:02 on the 12th and 22:03 on the 13th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 12th and is not on the 13th.", "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 23817 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 1982: Friday 12 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": "1982-03-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-12", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 1982 falls on Friday 12 March. Caturthī runs from 14:20 on Fri 12 Mar to 15:26 on Sat 13 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/sankashta-chaturthi?on=1982-03-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34330, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1982-03-16T21:55:47-06:00", "utc": "1982-03-17T03:55:47Z", "ms": 385185347115.6093 }, "end": { "local": "1982-03-18T00:32:28-06:00", "utc": "1982-03-18T06:32:28Z", "ms": 385281147587.7616 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-03-16T21:55:47-06:00", "utc": "1982-03-17T03:55:47Z", "ms": 385185347115.6093 }, "end": { "local": "1982-03-18T00:32:28-06:00", "utc": "1982-03-18T06:32:28Z", "ms": 385281147587.7616 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-03-16", "window": { "start": { "local": "1982-03-16T11:35:37-06:00", "utc": "1982-03-16T17:35:37Z", "ms": 385148137278.72046 }, "end": { "local": "1982-03-16T12:23:37-06:00", "utc": "1982-03-16T18:23:37Z", "ms": 385151017278.72046 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-03-17", "window": { "start": { "local": "1982-03-17T11:35:20-06:00", "utc": "1982-03-17T17:35:20Z", "ms": 385234520120.5962 }, "end": { "local": "1982-03-17T12:23:20-06:00", "utc": "1982-03-17T18:23:20Z", "ms": 385237400120.5962 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 21:56 on Tue 16 Mar to 00:32 on Thu 18 Mar.", "fact": "1982-03-17T03:55:47Z → 1982-03-18T06:32:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 16th, 11:35–12:23 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 34330 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Chicago, 1982: Wednesday 17 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": "1982-03-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-17", "confidence": "determinate" } ], "quote": "In Chicago, Śītalāṣṭamī 1982 falls on Wednesday 17 March. Aṣṭamī runs from 21:56 on Tue 16 Mar to 00:32 on Thu 18 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-03-21", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1239, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-03-20T04:54:18-06:00", "utc": "1982-03-20T10:54:18Z", "ms": 385469658091.6774 }, "end": { "local": "1982-03-21T06:13:35-06:00", "utc": "1982-03-21T12:13:35Z", "ms": 385560814833.9618 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-03-20T04:54:18-06:00", "utc": "1982-03-20T10:54:18Z", "ms": 385469658091.6774 }, "end": { "local": "1982-03-21T06:13:35-06:00", "utc": "1982-03-21T12:13:35Z", "ms": 385560814833.9618 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-03-20", "window": { "start": { "local": "1982-03-20T05:54:38-06:00", "utc": "1982-03-20T11:54:38Z", "ms": 385473278134.95874 }, "end": { "local": "1982-03-20T05:54:38-06:00", "utc": "1982-03-20T11:54:38Z", "ms": 385473278134.95874 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-03-21", "window": { "start": { "local": "1982-03-21T05:52:56-06:00", "utc": "1982-03-21T11:52:56Z", "ms": 385559575501.7851 }, "end": { "local": "1982-03-21T05:52:56-06:00", "utc": "1982-03-21T11:52:56Z", "ms": 385559575501.7851 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:54 on Sat 20 Mar to 06:14 on Sun 21 Mar.", "fact": "1982-03-20T10:54:18Z → 1982-03-21T12:13:35Z" }, { "step": "kaala", "text": "Sunrise is at 05:55 on the 20th and 05:53 on the 21st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 20th and is on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both sunrises qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 1239 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Chicago, 1982: Sunday 21 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": "1982-03-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-21", "confidence": "determinate" } ], "quote": "In Chicago, Pāpamocanī Ekādaśī 1982 falls on Sunday 21 March. Ekādaśī runs from 04:54 on Sat 20 Mar to 06:14 on Sun 21 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-03-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-03-22", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39594, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-03-22T06:48:39-06:00", "utc": "1982-03-22T12:48:39Z", "ms": 385649318917.3403 }, "end": { "local": "1982-03-23T06:38:25-06:00", "utc": "1982-03-23T12:38:25Z", "ms": 385735105314.4758 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-03-22T06:48:39-06:00", "utc": "1982-03-22T12:48:39Z", "ms": 385649318917.3403 }, "end": { "local": "1982-03-23T06:38:25-06:00", "utc": "1982-03-23T12:38:25Z", "ms": 385735105314.4758 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-03-21", "window": { "start": { "local": "1982-03-21T18:03:24-06:00", "utc": "1982-03-22T00:03:24Z", "ms": 385603404380.0019 }, "end": { "local": "1982-03-21T19:37:47-06:00", "utc": "1982-03-22T01:37:47Z", "ms": 385609066835.5164 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1982-03-22", "window": { "start": { "local": "1982-03-22T18:04:31-06:00", "utc": "1982-03-23T00:04:31Z", "ms": 385689871414.18884 }, "end": { "local": "1982-03-22T19:38:31-06:00", "utc": "1982-03-23T01:38:31Z", "ms": 385695511231.96185 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:49 on Mon 22 Mar to 06:38 on Tue 23 Mar.", "fact": "1982-03-22T12:48:39Z → 1982-03-23T12:38:25Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:03–19:38 on the 21st, 18:05–19:39 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 94 minutes on the 21st and 94 of 94 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 39594 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 1982: Monday 22 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": "1982-03-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-22", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 1982 falls on Monday 22 March. Trayodaśī runs from 06:49 on Mon 22 Mar to 06:38 on Tue 23 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-03-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/shivaratri?on=1982-03-23", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19517, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-03-23T06:38:25-06:00", "utc": "1982-03-23T12:38:25Z", "ms": 385735105314.4758 }, "end": { "local": "1982-03-24T05:46:00-06:00", "utc": "1982-03-24T11:46:00Z", "ms": 385818360164.65283 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-03-23T06:38:25-06:00", "utc": "1982-03-23T12:38:25Z", "ms": 385735105314.4758 }, "end": { "local": "1982-03-24T05:46:00-06:00", "utc": "1982-03-24T11:46:00Z", "ms": 385818360164.65283 } }, "kaala": "nishita", "days": [ { "local_date": "1982-03-22", "window": { "start": { "local": "1982-03-22T23:33:01-06:00", "utc": "1982-03-23T05:33:01Z", "ms": 385709580730.83765 }, "end": { "local": "1982-03-23T00:21:01-06:00", "utc": "1982-03-23T06:21:01Z", "ms": 385712460730.83765 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-03-23", "window": { "start": { "local": "1982-03-23T23:32:43-06:00", "utc": "1982-03-24T05:32:43Z", "ms": 385795962807.64514 }, "end": { "local": "1982-03-24T00:20:43-06:00", "utc": "1982-03-24T06:20:43Z", "ms": 385798842807.64514 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 06:38 on Tue 23 Mar to 05:46 on Wed 24 Mar.", "fact": "1982-03-23T12:38:25Z → 1982-03-24T11:46:00Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:33–00:21 on the 22nd, 23:33–00:21 on the 23rd.", "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 22nd and 48 of 48 on the 23rd.", "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 19517 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 1982: Tuesday 23 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-03-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-23", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 1982 falls on Tuesday 23 March. Caturdaśī runs from 06:38 on Tue 23 Mar to 05:46 on Wed 24 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/shivaratri?on=1982-03-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26130, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1982-03-25T04:17:29-06:00", "utc": "1982-03-25T10:17:29Z", "ms": 385899448595.33484 }, "end": { "local": "1982-03-26T02:20:42-06:00", "utc": "1982-03-26T08:20:42Z", "ms": 385978841673.13434 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-03-25T04:17:29-06:00", "utc": "1982-03-25T10:17:29Z", "ms": 385899448595.33484 }, "end": { "local": "1982-03-26T02:20:42-06:00", "utc": "1982-03-26T08:20:42Z", "ms": 385978841673.13434 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-03-25", "window": { "start": { "local": "1982-03-25T11:32:58-06:00", "utc": "1982-03-25T17:32:58Z", "ms": 385925578185.9326 }, "end": { "local": "1982-03-25T12:20:58-06:00", "utc": "1982-03-25T18:20:58Z", "ms": 385928458185.9326 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-03-26", "window": { "start": { "local": "1982-03-26T11:32:40-06:00", "utc": "1982-03-26T17:32:40Z", "ms": 386011960129.939 }, "end": { "local": "1982-03-26T12:20:40-06:00", "utc": "1982-03-26T18:20:40Z", "ms": 386014840129.939 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 04:17 on Thu 25 Mar to 02:21 on Fri 26 Mar.", "fact": "1982-03-25T10:17:29Z → 1982-03-26T08:20:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 25th, 11:33–12:21 on the 26th.", "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 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26130 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Chicago, 1982: Thursday 25 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha-caitra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-25", "confidence": "determinate" } ], "quote": "In Chicago, Navarātrārambha (Caitra) (Chaitra Navratri) 1982 falls on Thursday 25 March. Pratipadā runs from 04:17 on Thu 25 Mar to 02:21 on Fri 26 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33369, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1982-03-27T00:04:14-06:00", "utc": "1982-03-27T06:04:14Z", "ms": 386057053508.48914 }, "end": { "local": "1982-03-27T21:36:31-06:00", "utc": "1982-03-28T03:36:31Z", "ms": 386134591283.4706 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-03-27T00:04:14-06:00", "utc": "1982-03-27T06:04:14Z", "ms": 386057053508.48914 }, "end": { "local": "1982-03-27T21:36:31-06:00", "utc": "1982-03-28T03:36:31Z", "ms": 386134591283.4706 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-03-26", "window": { "start": { "local": "1982-03-26T11:32:40-06:00", "utc": "1982-03-26T17:32:40Z", "ms": 386011960129.939 }, "end": { "local": "1982-03-26T12:20:40-06:00", "utc": "1982-03-26T18:20:40Z", "ms": 386014840129.939 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-03-27", "window": { "start": { "local": "1982-03-27T11:32:22-06:00", "utc": "1982-03-27T17:32:22Z", "ms": 386098342058.739 }, "end": { "local": "1982-03-27T12:20:22-06:00", "utc": "1982-03-27T18:20:22Z", "ms": 386101222058.739 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 00:04 on Sat 27 Mar to 21:37 on Sat 27 Mar.", "fact": "1982-03-27T06:04:14Z → 1982-03-28T03:36:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 26th, 11:32–12:20 on the 27th.", "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 26th and 48 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33369 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Chicago, 1982: Saturday 27 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gauri-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-03-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-27", "confidence": "determinate" } ], "quote": "In Chicago, Gaurī Tṛtīyā (Gangaur) 1982 falls on Saturday 27 March. Tṛtīyā runs from 00:04 on Sat 27 Mar to 21:37 on Sat 27 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33369, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1982-03-27T00:04:14-06:00", "utc": "1982-03-27T06:04:14Z", "ms": 386057053508.48914 }, "end": { "local": "1982-03-27T21:36:31-06:00", "utc": "1982-03-28T03:36:31Z", "ms": 386134591283.4706 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-03-27T00:04:14-06:00", "utc": "1982-03-27T06:04:14Z", "ms": 386057053508.48914 }, "end": { "local": "1982-03-27T21:36:31-06:00", "utc": "1982-03-28T03:36:31Z", "ms": 386134591283.4706 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-03-26", "window": { "start": { "local": "1982-03-26T11:32:40-06:00", "utc": "1982-03-26T17:32:40Z", "ms": 386011960129.939 }, "end": { "local": "1982-03-26T12:20:40-06:00", "utc": "1982-03-26T18:20:40Z", "ms": 386014840129.939 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-03-27", "window": { "start": { "local": "1982-03-27T11:32:22-06:00", "utc": "1982-03-27T17:32:22Z", "ms": 386098342058.739 }, "end": { "local": "1982-03-27T12:20:22-06:00", "utc": "1982-03-27T18:20:22Z", "ms": 386101222058.739 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 00:04 on Sat 27 Mar to 21:37 on Sat 27 Mar.", "fact": "1982-03-27T06:04:14Z → 1982-03-28T03:36:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 26th, 11:32–12:20 on the 27th.", "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 26th and 48 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33369 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Chicago, 1982: Saturday 27 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "saubhagya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-03-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-27", "confidence": "determinate" } ], "quote": "In Chicago, Saubhāgya Śayana Vrata 1982 falls on Saturday 27 March. Tṛtīyā runs from 00:04 on Sat 27 Mar to 21:37 on Sat 27 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/vinayaka-chaturthi?on=1982-03-28", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24313, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-03-27T21:36:31-06:00", "utc": "1982-03-28T03:36:31Z", "ms": 386134591283.4706 }, "end": { "local": "1982-03-28T19:05:17-06:00", "utc": "1982-03-29T01:05:17Z", "ms": 386211917152.9933 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-03-27T21:36:31-06:00", "utc": "1982-03-28T03:36:31Z", "ms": 386134591283.4706 }, "end": { "local": "1982-03-28T19:05:17-06:00", "utc": "1982-03-29T01:05:17Z", "ms": 386211917152.9933 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-03-27", "window": { "start": { "local": "1982-03-27T11:32:22-06:00", "utc": "1982-03-27T17:32:22Z", "ms": 386098342058.739 }, "end": { "local": "1982-03-27T12:20:22-06:00", "utc": "1982-03-27T18:20:22Z", "ms": 386101222058.739 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-03-28", "window": { "start": { "local": "1982-03-28T11:32:04-06:00", "utc": "1982-03-28T17:32:04Z", "ms": 386184723987.97205 }, "end": { "local": "1982-03-28T12:20:04-06:00", "utc": "1982-03-28T18:20:04Z", "ms": 386187603987.97205 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:37 on Sat 27 Mar to 19:05 on Sun 28 Mar.", "fact": "1982-03-28T03:36:31Z → 1982-03-29T01:05:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 27th, 11:32–12:20 on the 28th.", "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 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 midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24313 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 1982: Sunday 28 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": "1982-03-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-28", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 1982 falls on Sunday 28 March. Caturthī runs from 21:37 on Sat 27 Mar to 19:05 on Sun 28 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/vinayaka-chaturthi?on=1982-03-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15435, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1982-03-28T19:05:17-06:00", "utc": "1982-03-29T01:05:17Z", "ms": 386211917152.9933 }, "end": { "local": "1982-03-29T16:37:01-06:00", "utc": "1982-03-29T22:37:01Z", "ms": 386289420621.09576 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-03-28T19:05:17-06:00", "utc": "1982-03-29T01:05:17Z", "ms": 386211917152.9933 }, "end": { "local": "1982-03-29T16:37:01-06:00", "utc": "1982-03-29T22:37:01Z", "ms": 386289420621.09576 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-03-28", "window": { "start": { "local": "1982-03-28T11:32:04-06:00", "utc": "1982-03-28T17:32:04Z", "ms": 386184723987.97205 }, "end": { "local": "1982-03-28T12:20:04-06:00", "utc": "1982-03-28T18:20:04Z", "ms": 386187603987.97205 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-03-29", "window": { "start": { "local": "1982-03-29T11:31:46-06:00", "utc": "1982-03-29T17:31:46Z", "ms": 386271105933.6681 }, "end": { "local": "1982-03-29T12:19:46-06:00", "utc": "1982-03-29T18:19:46Z", "ms": 386273985933.6681 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 19:05 on Sun 28 Mar to 16:37 on Mon 29 Mar.", "fact": "1982-03-29T01:05:17Z → 1982-03-29T22:37:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 28th, 11:32–12:20 on the 29th.", "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 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 15435 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Chicago, 1982: Monday 29 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "lakshmi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri pancami or Laksmi pancami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-03-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-29", "confidence": "determinate" } ], "quote": "In Chicago, Lakṣmī Pañcamī 1982 falls on Monday 29 March. Pañcamī runs from 19:05 on Sun 28 Mar to 16:37 on Mon 29 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 685, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1982-03-31T12:07:44-06:00", "utc": "1982-03-31T18:07:44Z", "ms": 386446064494.22375 }, "end": { "local": "1982-04-01T10:12:09-06:00", "utc": "1982-04-01T16:12:09Z", "ms": 386525528891.5597 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-03-31T12:07:44-06:00", "utc": "1982-03-31T18:07:44Z", "ms": 386446064494.22375 }, "end": { "local": "1982-04-01T10:12:09-06:00", "utc": "1982-04-01T16:12:09Z", "ms": 386525528891.5597 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-03-31", "window": { "start": { "local": "1982-03-31T11:31:10-06:00", "utc": "1982-03-31T17:31:10Z", "ms": 386443869942.2586 }, "end": { "local": "1982-03-31T12:19:10-06:00", "utc": "1982-03-31T18:19:10Z", "ms": 386446749942.2586 } }, "covered_min": 11, "window_min": 48, "qualifies": true }, { "local_date": "1982-04-01", "window": { "start": { "local": "1982-04-01T11:30:52-06:00", "utc": "1982-04-01T17:30:52Z", "ms": 386530252041.5829 }, "end": { "local": "1982-04-01T12:18:52-06:00", "utc": "1982-04-01T18:18:52Z", "ms": 386533132041.5829 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 12:08 on Wed 31 Mar to 10:12 on Thu 1 Apr.", "fact": "1982-03-31T18:07:44Z → 1982-04-01T16:12:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 31st, 11:31–12:19 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 11 of 48 minutes on the 31st and 0 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 685 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Chicago, 1982: Wednesday 31 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhavani-utpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Annapurna puja (Beng.) (paraviddha), Bhavani-utpatti (paraviddha), Asokastami (Special when combined with naks. Punarvasu and Wednesday, after mid-day)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-03-31", "confidence": "determinate" } ], "quote": "In Chicago, Bhavānī Utpatti 1982 falls on Wednesday 31 March. Aṣṭamī runs from 12:08 on Wed 31 Mar to 10:12 on Thu 1 Apr and covers 11 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4723, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1982-04-01T10:12:09-06:00", "utc": "1982-04-01T16:12:09Z", "ms": 386525528891.5597 }, "end": { "local": "1982-04-02T08:30:51-06:00", "utc": "1982-04-02T14:30:51Z", "ms": 386605850700.91064 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-04-01T10:12:09-06:00", "utc": "1982-04-01T16:12:09Z", "ms": 386525528891.5597 }, "end": { "local": "1982-04-02T08:30:51-06:00", "utc": "1982-04-02T14:30:51Z", "ms": 386605850700.91064 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-04-01", "window": { "start": { "local": "1982-04-01T11:30:52-06:00", "utc": "1982-04-01T17:30:52Z", "ms": 386530252041.5829 }, "end": { "local": "1982-04-01T12:18:52-06:00", "utc": "1982-04-01T18:18:52Z", "ms": 386533132041.5829 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-04-02", "window": { "start": { "local": "1982-04-02T11:30:34-06:00", "utc": "1982-04-02T17:30:34Z", "ms": 386616634230.02844 }, "end": { "local": "1982-04-02T12:18:34-06:00", "utc": "1982-04-02T18:18:34Z", "ms": 386619514230.02844 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 10:12 on Thu 1 Apr to 08:31 on Fri 2 Apr.", "fact": "1982-04-01T16:12:09Z → 1982-04-02T14:30:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 1st, 11:31–12:19 on the 2nd.", "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 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4723 s" }, { "step": "ruling", "text": "Rāma Navamī, Chicago, 1982: Thursday 1 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": "1982-04-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-01", "confidence": "determinate" } ], "quote": "In Chicago, Rāma Navamī 1982 falls on Thursday 1 April. Navamī runs from 10:12 on Thu 1 Apr to 08:31 on Fri 2 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-04-04", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1436, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-04-03T07:04:16-06:00", "utc": "1982-04-03T13:04:16Z", "ms": 386687056448.6137 }, "end": { "local": "1982-04-04T05:53:00-06:00", "utc": "1982-04-04T11:53:00Z", "ms": 386769179848.1099 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-04-03T07:04:16-06:00", "utc": "1982-04-03T13:04:16Z", "ms": 386687056448.6137 }, "end": { "local": "1982-04-04T05:53:00-06:00", "utc": "1982-04-04T11:53:00Z", "ms": 386769179848.1099 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-04-03", "window": { "start": { "local": "1982-04-03T05:30:45-06:00", "utc": "1982-04-03T11:30:45Z", "ms": 386681444922.62244 }, "end": { "local": "1982-04-03T05:30:45-06:00", "utc": "1982-04-03T11:30:45Z", "ms": 386681444922.62244 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-04-04", "window": { "start": { "local": "1982-04-04T05:29:04-06:00", "utc": "1982-04-04T11:29:04Z", "ms": 386767743862.67035 }, "end": { "local": "1982-04-04T05:29:04-06:00", "utc": "1982-04-04T11:29:04Z", "ms": 386767743862.67035 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:04 on Sat 3 Apr to 05:53 on Sun 4 Apr.", "fact": "1982-04-03T13:04:16Z → 1982-04-04T11:53:00Z" }, { "step": "kaala", "text": "Sunrise is at 05:31 on the 3rd and 05:29 on the 4th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 3rd and is 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 1436 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Chicago, 1982: Sunday 4 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": "1982-04-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-04", "confidence": "determinate" } ], "quote": "In Chicago, Kāmadā Ekādaśī 1982 falls on Sunday 4 April. Ekādaśī runs from 07:04 on Sat 3 Apr to 05:53 on Sun 4 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-04-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23489, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-04-05T04:58:13-06:00", "utc": "1982-04-05T10:58:13Z", "ms": 386852292917.5233 }, "end": { "local": "1982-04-06T04:22:03-06:00", "utc": "1982-04-06T10:22:03Z", "ms": 386936523461.28485 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-04-05T04:58:13-06:00", "utc": "1982-04-05T10:58:13Z", "ms": 386852292917.5233 }, "end": { "local": "1982-04-06T04:22:03-06:00", "utc": "1982-04-06T10:22:03Z", "ms": 386936523461.28485 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-04-05", "window": { "start": { "local": "1982-04-05T11:29:42-06:00", "utc": "1982-04-05T17:29:42Z", "ms": 386875781537.6439 }, "end": { "local": "1982-04-05T12:17:42-06:00", "utc": "1982-04-05T18:17:42Z", "ms": 386878661537.6439 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-04-06", "window": { "start": { "local": "1982-04-06T11:29:24-06:00", "utc": "1982-04-06T17:29:24Z", "ms": 386962164292.7357 }, "end": { "local": "1982-04-06T12:17:24-06:00", "utc": "1982-04-06T18:17:24Z", "ms": 386965044292.7357 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:58 on Mon 5 Apr to 04:22 on Tue 6 Apr.", "fact": "1982-04-05T10:58:13Z → 1982-04-06T10:22:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 5th, 11:29–12:17 on the 6th.", "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 5th and 0 of 48 on the 6th.", "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 23489 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Chicago, 1982: Monday 5 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": "1982-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-05", "confidence": "determinate" } ], "quote": "In Chicago, Anaṅga Trayodaśī 1982 falls on Monday 5 April. Trayodaśī runs from 04:58 on Mon 5 Apr to 04:22 on Tue 6 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/pradosha-vrata?on=1982-04-05", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30798, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-04-05T04:58:13-06:00", "utc": "1982-04-05T10:58:13Z", "ms": 386852292917.5233 }, "end": { "local": "1982-04-06T04:22:03-06:00", "utc": "1982-04-06T10:22:03Z", "ms": 386936523461.28485 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-04-05T04:58:13-06:00", "utc": "1982-04-05T10:58:13Z", "ms": 386852292917.5233 }, "end": { "local": "1982-04-06T04:22:03-06:00", "utc": "1982-04-06T10:22:03Z", "ms": 386936523461.28485 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-04-04", "window": { "start": { "local": "1982-04-04T18:18:54-06:00", "utc": "1982-04-05T00:18:54Z", "ms": 386813934050.6831 }, "end": { "local": "1982-04-04T19:48:02-06:00", "utc": "1982-04-05T01:48:02Z", "ms": 386819281929.6898 } }, "covered_min": 0, "window_min": 89, "qualifies": false }, { "local_date": "1982-04-05", "window": { "start": { "local": "1982-04-05T18:20:00-06:00", "utc": "1982-04-06T00:20:00Z", "ms": 386900399932.05444 }, "end": { "local": "1982-04-05T19:48:46-06:00", "utc": "1982-04-06T01:48:46Z", "ms": 386905725647.40704 } }, "covered_min": 89, "window_min": 89, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:58 on Mon 5 Apr to 04:22 on Tue 6 Apr.", "fact": "1982-04-05T10:58:13Z → 1982-04-06T10:22:03Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:19–19:48 on the 4th, 18:20–19:49 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 89 minutes on the 4th and 89 of 89 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 30798 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 1982: Monday 5 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": "1982-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-05", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 1982 falls on Monday 5 April. Trayodaśī runs from 04:58 on Mon 5 Apr to 04:22 on Tue 6 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-04-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25641, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-04-06T04:22:03-06:00", "utc": "1982-04-06T10:22:03Z", "ms": 386936523461.28485 }, "end": { "local": "1982-04-07T04:07:34-06:00", "utc": "1982-04-07T10:07:34Z", "ms": 387022053832.5845 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-04-06T04:22:03-06:00", "utc": "1982-04-06T10:22:03Z", "ms": 386936523461.28485 }, "end": { "local": "1982-04-07T04:07:34-06:00", "utc": "1982-04-07T10:07:34Z", "ms": 387022053832.5845 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-04-06", "window": { "start": { "local": "1982-04-06T11:29:24-06:00", "utc": "1982-04-06T17:29:24Z", "ms": 386962164292.7357 }, "end": { "local": "1982-04-06T12:17:24-06:00", "utc": "1982-04-06T18:17:24Z", "ms": 386965044292.7357 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-04-07", "window": { "start": { "local": "1982-04-07T11:29:07-06:00", "utc": "1982-04-07T17:29:07Z", "ms": 387048547243.73926 }, "end": { "local": "1982-04-07T12:17:07-06:00", "utc": "1982-04-07T18:17:07Z", "ms": 387051427243.73926 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:22 on Tue 6 Apr to 04:08 on Wed 7 Apr.", "fact": "1982-04-06T10:22:03Z → 1982-04-07T10:07:34Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 6th, 11:29–12:17 on the 7th.", "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 6th and 0 of 48 on the 7th.", "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 25641 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Chicago, 1982: Tuesday 6 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": "1982-04-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-06", "confidence": "determinate" } ], "quote": "In Chicago, Viṣṇudamanaka Caturdaśī 1982 falls on Tuesday 6 April. Caturdaśī runs from 04:22 on Tue 6 Apr to 04:08 on Wed 7 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25831, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-04-07T04:07:34-06:00", "utc": "1982-04-07T10:07:34Z", "ms": 387022053832.5845 }, "end": { "local": "1982-04-08T04:18:19-06:00", "utc": "1982-04-08T10:18:19Z", "ms": 387109099103.9867 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1982-04-07T04:07:34-06:00", "utc": "1982-04-07T10:07:34Z", "ms": 387022053832.5845 }, "end": { "local": "1982-04-08T04:18:19-06:00", "utc": "1982-04-08T10:18:19Z", "ms": 387109099103.9867 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-04-07", "window": { "start": { "local": "1982-04-07T11:29:07-06:00", "utc": "1982-04-07T17:29:07Z", "ms": 387048547243.73926 }, "end": { "local": "1982-04-07T12:17:07-06:00", "utc": "1982-04-07T18:17:07Z", "ms": 387051427243.73926 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-04-08", "window": { "start": { "local": "1982-04-08T11:28:50-06:00", "utc": "1982-04-08T17:28:50Z", "ms": 387134930412.16943 }, "end": { "local": "1982-04-08T12:16:50-06:00", "utc": "1982-04-08T18:16:50Z", "ms": 387137810412.16943 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 04:08 on Wed 7 Apr to 04:18 on Thu 8 Apr.", "fact": "1982-04-07T10:07:34Z → 1982-04-08T10:18:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 7th, 11:29–12:17 on the 8th.", "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 7th and 0 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 25831 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Chicago, 1982: Wednesday 7 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": "1982-04-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-07", "confidence": "determinate" } ], "quote": "In Chicago, Caitrī Pūrṇimā 1982 falls on Wednesday 7 April. Pūrṇimā runs from 04:08 on Wed 7 Apr to 04:18 on Thu 8 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/sankashta-chaturthi?on=1982-04-11", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39498, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-04-11T07:49:33-06:00", "utc": "1982-04-11T13:49:33Z", "ms": 387380972973.2703 }, "end": { "local": "1982-04-12T09:58:27-06:00", "utc": "1982-04-12T15:58:27Z", "ms": 387475107421.26227 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-04-11T07:49:33-06:00", "utc": "1982-04-11T13:49:33Z", "ms": 387380972973.2703 }, "end": { "local": "1982-04-12T09:58:27-06:00", "utc": "1982-04-12T15:58:27Z", "ms": 387475107421.26227 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-04-10", "window": { "start": { "local": "1982-04-10T20:51:15-06:00", "utc": "1982-04-11T02:51:15Z", "ms": 387341475168.68506 }, "end": { "local": "1982-04-10T20:51:15-06:00", "utc": "1982-04-11T02:51:15Z", "ms": 387341475168.68506 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-04-11", "window": { "start": { "local": "1982-04-11T21:51:19-06:00", "utc": "1982-04-12T03:51:19Z", "ms": 387431478755.96735 }, "end": { "local": "1982-04-11T21:51:19-06:00", "utc": "1982-04-12T03:51:19Z", "ms": 387431478755.96735 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:50 on Sun 11 Apr to 09:58 on Mon 12 Apr.", "fact": "1982-04-11T13:49:33Z → 1982-04-12T15:58:27Z" }, { "step": "kaala", "text": "Moonrise is at 20:51 on the 10th and 21:51 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 10th and is on the 11th.", "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 39498 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 1982: Sunday 11 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": "1982-04-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-11", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 1982 falls on Sunday 11 April. Caturthī runs from 07:50 on Sun 11 Apr to 09:58 on Mon 12 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/sankashta-chaturthi?on=1982-04-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35861, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "1982-04-13T15:11:55-06:00", "utc": "1982-04-13T21:11:55Z", "ms": 387580314914.37585 }, "end": { "local": "1982-05-14T13:05:34-05:00", "utc": "1982-05-14T18:05:34Z", "ms": 390247534334.72327 } }, "span": { "of": "transit", "start": { "local": "1982-04-13T15:11:55-06:00", "utc": "1982-04-13T21:11:55Z", "ms": 387580314914.37585 }, "end": { "local": "1982-04-13T15:11:55-06:00", "utc": "1982-04-13T21:11:55Z", "ms": 387580314914.37585 } }, "kaala": "day", "days": [ { "local_date": "1982-04-12", "window": { "start": { "local": "1982-04-12T05:15:50-06:00", "utc": "1982-04-12T11:15:50Z", "ms": 387458150399.8875 }, "end": { "local": "1982-04-13T05:14:14-06:00", "utc": "1982-04-13T11:14:14Z", "ms": 387544453584.99255 } }, "covered_min": 0, "window_min": 1438, "qualifies": false }, { "local_date": "1982-04-13", "window": { "start": { "local": "1982-04-13T05:14:14-06:00", "utc": "1982-04-13T11:14:14Z", "ms": 387544453584.99255 }, "end": { "local": "1982-04-14T05:12:37-06:00", "utc": "1982-04-14T11:12:37Z", "ms": 387630757404.7589 } }, "covered_min": 1, "window_min": 1438, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 15:12 on Tue 13 Apr.", "fact": "1982-04-13T21:11:55Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:16 on the 12th, and from 05:14 on the 13th.", "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 12th.", "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 35861 s" }, { "step": "ruling", "text": "Vaiśākhī, Chicago, 1982: Tuesday 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": "1982-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1982-04-13", "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": "1982-04-13", "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 Chicago, Vaiśākhī 1982 falls on Tuesday 13 April. The Sun enters Meṣa at 15:12 on Tue 13 Apr, and the rule counts the day from sunrise.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-04-19", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25369, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-04-18T22:01:59-06:00", "utc": "1982-04-19T04:01:59Z", "ms": 388036918648.69684 }, "end": { "local": "1982-04-19T21:58:53-06:00", "utc": "1982-04-20T03:58:53Z", "ms": 388123132911.66095 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-04-18T22:01:59-06:00", "utc": "1982-04-19T04:01:59Z", "ms": 388036918648.69684 }, "end": { "local": "1982-04-19T21:58:53-06:00", "utc": "1982-04-20T03:58:53Z", "ms": 388123132911.66095 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-04-19", "window": { "start": { "local": "1982-04-19T05:04:47-06:00", "utc": "1982-04-19T11:04:47Z", "ms": 388062287151.0142 }, "end": { "local": "1982-04-19T05:04:47-06:00", "utc": "1982-04-19T11:04:47Z", "ms": 388062287151.0142 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-04-20", "window": { "start": { "local": "1982-04-20T05:03:15-06:00", "utc": "1982-04-20T11:03:15Z", "ms": 388148595453.01904 }, "end": { "local": "1982-04-20T05:03:15-06:00", "utc": "1982-04-20T11:03:15Z", "ms": 388148595453.01904 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:02 on Sun 18 Apr to 21:59 on Mon 19 Apr.", "fact": "1982-04-19T04:01:59Z → 1982-04-20T03:58:53Z" }, { "step": "kaala", "text": "Sunrise is at 05:05 on the 19th and 05:03 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 25369 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Chicago, 1982: Monday 19 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": "1982-04-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-19", "confidence": "determinate" } ], "quote": "In Chicago, Varūthinī Ekādaśī 1982 falls on Monday 19 April. Ekādaśī runs from 22:02 on Sun 18 Apr to 21:59 on Mon 19 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-04-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-04-21", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1942, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-04-20T21:06:08-06:00", "utc": "1982-04-21T03:06:08Z", "ms": 388206367725.5644 }, "end": { "local": "1982-04-21T19:28:15-06:00", "utc": "1982-04-22T01:28:15Z", "ms": 388286894769.50256 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-04-20T21:06:08-06:00", "utc": "1982-04-21T03:06:08Z", "ms": 388206367725.5644 }, "end": { "local": "1982-04-21T19:28:15-06:00", "utc": "1982-04-22T01:28:15Z", "ms": 388286894769.50256 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-04-20", "window": { "start": { "local": "1982-04-20T18:36:29-06:00", "utc": "1982-04-21T00:36:29Z", "ms": 388197389243.4476 }, "end": { "local": "1982-04-20T19:59:51-06:00", "utc": "1982-04-21T01:59:51Z", "ms": 388202391292.63007 } }, "covered_min": 0, "window_min": 83, "qualifies": false }, { "local_date": "1982-04-21", "window": { "start": { "local": "1982-04-21T18:37:35-06:00", "utc": "1982-04-22T00:37:35Z", "ms": 388283855373.2097 }, "end": { "local": "1982-04-21T20:00:37-06:00", "utc": "1982-04-22T02:00:37Z", "ms": 388288836611.33954 } }, "covered_min": 51, "window_min": 83, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:06 on Tue 20 Apr to 19:28 on Wed 21 Apr.", "fact": "1982-04-21T03:06:08Z → 1982-04-22T01:28:15Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:36–20:00 on the 20th, 18:38–20:01 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 83 minutes on the 20th and 51 of 83 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 1942 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 1982: Wednesday 21 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": "1982-04-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-21", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 1982 falls on Wednesday 21 April. Trayodaśī runs from 21:06 on Tue 20 Apr to 19:28 on Wed 21 Apr and covers 51 of 83 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-04-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/shivaratri?on=1982-04-21", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14200, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-04-21T19:28:15-06:00", "utc": "1982-04-22T01:28:15Z", "ms": 388286894769.50256 }, "end": { "local": "1982-04-22T17:12:41-06:00", "utc": "1982-04-22T23:12:41Z", "ms": 388365161493.18536 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-04-21T19:28:15-06:00", "utc": "1982-04-22T01:28:15Z", "ms": 388286894769.50256 }, "end": { "local": "1982-04-22T17:12:41-06:00", "utc": "1982-04-22T23:12:41Z", "ms": 388365161493.18536 } }, "kaala": "nishita", "days": [ { "local_date": "1982-04-21", "window": { "start": { "local": "1982-04-21T23:24:55-06:00", "utc": "1982-04-22T05:24:55Z", "ms": 388301095016.19653 }, "end": { "local": "1982-04-22T00:12:55-06:00", "utc": "1982-04-22T06:12:55Z", "ms": 388303975016.19653 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-04-22", "window": { "start": { "local": "1982-04-22T23:24:44-06:00", "utc": "1982-04-23T05:24:44Z", "ms": 388387483560.2943 }, "end": { "local": "1982-04-23T00:12:44-06:00", "utc": "1982-04-23T06:12:44Z", "ms": 388390363560.2943 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 19:28 on Wed 21 Apr to 17:13 on Thu 22 Apr.", "fact": "1982-04-22T01:28:15Z → 1982-04-22T23:12:41Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:25–00:13 on the 21st, 23:25–00:13 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "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 14200 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 1982: Wednesday 21 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": "1982-04-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-21", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 1982 falls on Wednesday 21 April. Caturdaśī runs from 19:28 on Wed 21 Apr to 17:13 on Thu 22 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/shivaratri?on=1982-04-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32477, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1982-04-25T09:15:07-05:00", "utc": "1982-04-25T14:15:07Z", "ms": 388592107304.05396 }, "end": { "local": "1982-04-26T06:04:56-05:00", "utc": "1982-04-26T11:04:56Z", "ms": 388667096274.81555 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-04-25T09:15:07-05:00", "utc": "1982-04-25T14:15:07Z", "ms": 388592107304.05396 }, "end": { "local": "1982-04-26T06:04:56-05:00", "utc": "1982-04-26T11:04:56Z", "ms": 388667096274.81555 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-04-24", "window": { "start": { "local": "1982-04-24T18:40:54-06:00", "utc": "1982-04-25T00:40:54Z", "ms": 388543253673.98083 }, "end": { "local": "1982-04-24T20:02:53-06:00", "utc": "1982-04-25T02:02:53Z", "ms": 388548173239.9511 } }, "covered_min": 0, "window_min": 82, "qualifies": false }, { "local_date": "1982-04-25", "window": { "start": { "local": "1982-04-25T19:42:00-05:00", "utc": "1982-04-26T00:42:00Z", "ms": 388629719694.90375 }, "end": { "local": "1982-04-25T21:03:39-05:00", "utc": "1982-04-26T02:03:39Z", "ms": 388634618976.6138 } }, "covered_min": 82, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 09:15 on Sun 25 Apr to 06:05 on Mon 26 Apr.", "fact": "1982-04-25T14:15:07Z → 1982-04-26T11:04:56Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:41–20:03 on the 24th, 19:42–21:04 on the 25th.", "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 82 minutes on the 24th and 82 of 82 on the 25th.", "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 32477 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Chicago, 1982: Sunday 25 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-04-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-25", "confidence": "determinate" } ], "quote": "In Chicago, Paraśurāma Jayantī 1982 falls on Sunday 25 April. Tṛtīyā runs from 09:15 on Sun 25 Apr to 06:05 on Mon 26 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 632, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1982-04-25T09:15:07-05:00", "utc": "1982-04-25T14:15:07Z", "ms": 388592107304.05396 }, "end": { "local": "1982-04-26T06:04:56-05:00", "utc": "1982-04-26T11:04:56Z", "ms": 388667096274.81555 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-04-25T09:15:07-05:00", "utc": "1982-04-25T14:15:07Z", "ms": 388592107304.05396 }, "end": { "local": "1982-04-26T06:04:56-05:00", "utc": "1982-04-26T11:04:56Z", "ms": 388667096274.81555 } }, "kaala": "purvahna", "days": [ { "local_date": "1982-04-25", "window": { "start": { "local": "1982-04-25T05:55:50-05:00", "utc": "1982-04-25T10:55:50Z", "ms": 388580150418.75806 }, "end": { "local": "1982-04-25T10:31:14-05:00", "utc": "1982-04-25T15:31:14Z", "ms": 388596673510.80664 } }, "covered_min": 76, "window_min": 275, "qualifies": true }, { "local_date": "1982-04-26", "window": { "start": { "local": "1982-04-26T05:54:24-05:00", "utc": "1982-04-26T10:54:24Z", "ms": 388666464307.7289 }, "end": { "local": "1982-04-26T10:30:38-05:00", "utc": "1982-04-26T15:30:38Z", "ms": 388683038087.2659 } }, "covered_min": 11, "window_min": 276, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 09:15 on Sun 25 Apr to 06:05 on Mon 26 Apr.", "fact": "1982-04-25T14:15:07Z → 1982-04-26T11:04:56Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:56–10:31 on the 25th, 05:54–10:31 on the 26th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pūrvāhṇa. It covers 76 of 275 minutes on the 25th and 11 of 276 on the 26th.", "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 632 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Chicago, 1982: Monday 26 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "not_evaluated": "The row calls the day special with Rohiṇī nakṣatra and a Wednesday; neither is tested.", "kaala": "purvahna", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-26", "confidence": "determinate" } ], "quote": "In Chicago, Akṣaya Tṛtīyā 1982 falls on Monday 26 April. Tṛtīyā runs from 09:15 on Sun 25 Apr to 06:05 on Mon 26 Apr and covers 11 of 276 minutes of pūrvāhṇa that forenoon. It also reaches the previous forenoon for 76 minutes; by the rule the second forenoon is taken.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/vinayaka-chaturthi?on=1982-04-26", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22789, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-04-26T06:04:56-05:00", "utc": "1982-04-26T11:04:56Z", "ms": 388667096274.81555 }, "end": { "local": "1982-04-27T03:03:56-05:00", "utc": "1982-04-27T08:03:56Z", "ms": 388742636215.61176 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-04-26T06:04:56-05:00", "utc": "1982-04-26T11:04:56Z", "ms": 388667096274.81555 }, "end": { "local": "1982-04-27T03:03:56-05:00", "utc": "1982-04-27T08:03:56Z", "ms": 388742636215.61176 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-04-26", "window": { "start": { "local": "1982-04-26T12:24:45-05:00", "utc": "1982-04-26T17:24:45Z", "ms": 388689884977.0345 }, "end": { "local": "1982-04-26T13:12:45-05:00", "utc": "1982-04-26T18:12:45Z", "ms": 388692764977.0345 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-04-27", "window": { "start": { "local": "1982-04-27T12:24:35-05:00", "utc": "1982-04-27T17:24:35Z", "ms": 388776275370.63074 }, "end": { "local": "1982-04-27T13:12:35-05:00", "utc": "1982-04-27T18:12:35Z", "ms": 388779155370.63074 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:05 on Mon 26 Apr to 03:04 on Tue 27 Apr.", "fact": "1982-04-26T11:04:56Z → 1982-04-27T08:03:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 26th, 12:25–13:13 on the 27th.", "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 26th and 0 of 48 on the 27th.", "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 22789 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 1982: Monday 26 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": "1982-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-26", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 1982 falls on Monday 26 April. Caturthī runs from 06:05 on Mon 26 Apr to 03:04 on Tue 27 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/vinayaka-chaturthi?on=1982-04-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33639, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1982-04-27T03:03:56-05:00", "utc": "1982-04-27T08:03:56Z", "ms": 388742636215.61176 }, "end": { "local": "1982-04-28T00:19:02-05:00", "utc": "1982-04-28T05:19:02Z", "ms": 388819142067.94434 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-04-27T03:03:56-05:00", "utc": "1982-04-27T08:03:56Z", "ms": 388742636215.61176 }, "end": { "local": "1982-04-28T00:19:02-05:00", "utc": "1982-04-28T05:19:02Z", "ms": 388819142067.94434 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-04-27", "window": { "start": { "local": "1982-04-27T12:24:35-05:00", "utc": "1982-04-27T17:24:35Z", "ms": 388776275370.63074 }, "end": { "local": "1982-04-27T13:12:35-05:00", "utc": "1982-04-27T18:12:35Z", "ms": 388779155370.63074 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-04-28", "window": { "start": { "local": "1982-04-28T12:24:26-05:00", "utc": "1982-04-28T17:24:26Z", "ms": 388862666243.39624 }, "end": { "local": "1982-04-28T13:12:26-05:00", "utc": "1982-04-28T18:12:26Z", "ms": 388865546243.39624 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 03:04 on Tue 27 Apr to 00:19 on Wed 28 Apr.", "fact": "1982-04-27T08:03:56Z → 1982-04-28T05:19:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 27th, 12:24–13:12 on the 28th.", "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 27th and 0 of 48 on the 28th.", "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 33639 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Chicago, 1982: Tuesday 27 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shankara-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sankara jayanti." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-04-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-27", "confidence": "determinate" } ], "quote": "In Chicago, Śaṅkara Jayantī 1982 falls on Tuesday 27 April. Pañcamī runs from 03:04 on Tue 27 Apr to 00:19 on Wed 28 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-04-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24266, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1982-04-28T21:55:29-05:00", "utc": "1982-04-29T02:55:29Z", "ms": 388896928615.8281 }, "end": { "local": "1982-04-29T19:56:44-05:00", "utc": "1982-04-30T00:56:44Z", "ms": 388976203980.5333 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-04-28T21:55:29-05:00", "utc": "1982-04-29T02:55:29Z", "ms": 388896928615.8281 }, "end": { "local": "1982-04-29T19:56:44-05:00", "utc": "1982-04-30T00:56:44Z", "ms": 388976203980.5333 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-04-28", "window": { "start": { "local": "1982-04-28T12:24:26-05:00", "utc": "1982-04-28T17:24:26Z", "ms": 388862666243.39624 }, "end": { "local": "1982-04-28T13:12:26-05:00", "utc": "1982-04-28T18:12:26Z", "ms": 388865546243.39624 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-04-29", "window": { "start": { "local": "1982-04-29T12:24:18-05:00", "utc": "1982-04-29T17:24:18Z", "ms": 388949057602.0864 }, "end": { "local": "1982-04-29T13:12:18-05:00", "utc": "1982-04-29T18:12:18Z", "ms": 388951937602.0864 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 21:55 on Wed 28 Apr to 19:57 on Thu 29 Apr.", "fact": "1982-04-29T02:55:29Z → 1982-04-30T00:56:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 28th, 12:24–13:12 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 24266 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Chicago, 1982: Thursday 29 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gangotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-04-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-04-29", "confidence": "determinate" } ], "quote": "In Chicago, Gaṅgotpatti (Ganga Saptami) 1982 falls on Thursday 29 April. Saptamī runs from 21:55 on Wed 28 Apr to 19:57 on Thu 29 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-05-03", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38576, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-05-02T16:40:47-05:00", "utc": "1982-05-02T21:40:47Z", "ms": 389223646513.1739 }, "end": { "local": "1982-05-03T16:27:49-05:00", "utc": "1982-05-03T21:27:49Z", "ms": 389309268516.6878 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-02T16:40:47-05:00", "utc": "1982-05-02T21:40:47Z", "ms": 389223646513.1739 }, "end": { "local": "1982-05-03T16:27:49-05:00", "utc": "1982-05-03T21:27:49Z", "ms": 389309268516.6878 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-05-02", "window": { "start": { "local": "1982-05-02T05:46:10-05:00", "utc": "1982-05-02T10:46:10Z", "ms": 389184370480.1785 }, "end": { "local": "1982-05-02T05:46:10-05:00", "utc": "1982-05-02T10:46:10Z", "ms": 389184370480.1785 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-05-03", "window": { "start": { "local": "1982-05-03T05:44:52-05:00", "utc": "1982-05-03T10:44:52Z", "ms": 389270692290.9917 }, "end": { "local": "1982-05-03T05:44:52-05:00", "utc": "1982-05-03T10:44:52Z", "ms": 389270692290.9917 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:41 on Sun 2 May to 16:28 on Mon 3 May.", "fact": "1982-05-02T21:40:47Z → 1982-05-03T21:27:49Z" }, { "step": "kaala", "text": "Sunrise is at 05:46 on the 2nd and 05:45 on the 3rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 2nd and is on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38576 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Chicago, 1982: Monday 3 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": "1982-05-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-03", "confidence": "determinate" } ], "quote": "In Chicago, Mohinī Ekādaśī 1982 falls on Monday 3 May. Ekādaśī runs from 16:41 on Sun 2 May to 16:28 on Mon 3 May and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-05-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11760, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1982-05-03T16:27:49-05:00", "utc": "1982-05-03T21:27:49Z", "ms": 389309268516.6878 }, "end": { "local": "1982-05-04T16:39:51-05:00", "utc": "1982-05-04T21:39:51Z", "ms": 389396391466.8737 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-03T16:27:49-05:00", "utc": "1982-05-03T21:27:49Z", "ms": 389309268516.6878 }, "end": { "local": "1982-05-04T16:39:51-05:00", "utc": "1982-05-04T21:39:51Z", "ms": 389396391466.8737 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-05-03", "window": { "start": { "local": "1982-05-03T12:23:48-05:00", "utc": "1982-05-03T17:23:48Z", "ms": 389294628053.2294 }, "end": { "local": "1982-05-03T13:11:48-05:00", "utc": "1982-05-03T18:11:48Z", "ms": 389297508053.2294 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-05-04", "window": { "start": { "local": "1982-05-04T12:23:42-05:00", "utc": "1982-05-04T17:23:42Z", "ms": 389381021962.614 }, "end": { "local": "1982-05-04T13:11:42-05:00", "utc": "1982-05-04T18:11:42Z", "ms": 389383901962.614 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 16:28 on Mon 3 May to 16:40 on Tue 4 May.", "fact": "1982-05-03T21:27:49Z → 1982-05-04T21:39:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 3rd, 12:24–13:12 on the 4th.", "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 3rd and 48 of 48 on the 4th.", "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 11760 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Chicago, 1982: Tuesday 4 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": "1982-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-04", "confidence": "determinate" } ], "quote": "In Chicago, Paraśurāma Dvādaśī 1982 falls on Tuesday 4 May. Dvādaśī runs from 16:28 on Mon 3 May to 16:40 on Tue 4 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11760, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1982-05-03T16:27:49-05:00", "utc": "1982-05-03T21:27:49Z", "ms": 389309268516.6878 }, "end": { "local": "1982-05-04T16:39:51-05:00", "utc": "1982-05-04T21:39:51Z", "ms": 389396391466.8737 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-03T16:27:49-05:00", "utc": "1982-05-03T21:27:49Z", "ms": 389309268516.6878 }, "end": { "local": "1982-05-04T16:39:51-05:00", "utc": "1982-05-04T21:39:51Z", "ms": 389396391466.8737 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-05-03", "window": { "start": { "local": "1982-05-03T12:23:48-05:00", "utc": "1982-05-03T17:23:48Z", "ms": 389294628053.2294 }, "end": { "local": "1982-05-03T13:11:48-05:00", "utc": "1982-05-03T18:11:48Z", "ms": 389297508053.2294 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-05-04", "window": { "start": { "local": "1982-05-04T12:23:42-05:00", "utc": "1982-05-04T17:23:42Z", "ms": 389381021962.614 }, "end": { "local": "1982-05-04T13:11:42-05:00", "utc": "1982-05-04T18:11:42Z", "ms": 389383901962.614 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 16:28 on Mon 3 May to 16:40 on Tue 4 May.", "fact": "1982-05-03T21:27:49Z → 1982-05-04T21:39:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 3rd, 12:24–13:12 on the 4th.", "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 3rd and 48 of 48 on the 4th.", "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 11760 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Chicago, 1982: Tuesday 4 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": "1982-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-04", "confidence": "determinate" } ], "quote": "In Chicago, Rukmiṇī Dvādaśī 1982 falls on Tuesday 4 May. Dvādaśī runs from 16:28 on Mon 3 May to 16:40 on Tue 4 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/pradosha-vrata?on=1982-05-04", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9374, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-05-04T16:39:51-05:00", "utc": "1982-05-04T21:39:51Z", "ms": 389396391466.8737 }, "end": { "local": "1982-05-05T17:16:39-05:00", "utc": "1982-05-05T22:16:39Z", "ms": 389484999328.0728 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-04T16:39:51-05:00", "utc": "1982-05-04T21:39:51Z", "ms": 389396391466.8737 }, "end": { "local": "1982-05-05T17:16:39-05:00", "utc": "1982-05-05T22:16:39Z", "ms": 389484999328.0728 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-05-04", "window": { "start": { "local": "1982-05-04T19:51:49-05:00", "utc": "1982-05-05T00:51:49Z", "ms": 389407908556.2889 }, "end": { "local": "1982-05-04T21:10:33-05:00", "utc": "1982-05-05T02:10:33Z", "ms": 389412632715.2467 } }, "covered_min": 79, "window_min": 79, "qualifies": true }, { "local_date": "1982-05-05", "window": { "start": { "local": "1982-05-05T19:52:53-05:00", "utc": "1982-05-06T00:52:53Z", "ms": 389494373066.5361 }, "end": { "local": "1982-05-05T21:11:19-05:00", "utc": "1982-05-06T02:11:19Z", "ms": 389499078719.52386 } }, "covered_min": 0, "window_min": 78, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 16:40 on Tue 4 May to 17:17 on Wed 5 May.", "fact": "1982-05-04T21:39:51Z → 1982-05-05T22:16:39Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:52–21:11 on the 4th, 19:53–21:11 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 79 of 79 minutes on the 4th and 0 of 78 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 9374 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 1982: Tuesday 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": "1982-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-04", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 1982 falls on Tuesday 4 May. Trayodaśī runs from 16:40 on Tue 4 May to 17:17 on Wed 5 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-05-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5741, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-05-05T17:16:39-05:00", "utc": "1982-05-05T22:16:39Z", "ms": 389484999328.0728 }, "end": { "local": "1982-05-06T18:18:16-05:00", "utc": "1982-05-06T23:18:16Z", "ms": 389575095884.7909 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-05T17:16:39-05:00", "utc": "1982-05-05T22:16:39Z", "ms": 389484999328.0728 }, "end": { "local": "1982-05-06T18:18:16-05:00", "utc": "1982-05-06T23:18:16Z", "ms": 389575095884.7909 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-05-05", "window": { "start": { "local": "1982-05-05T19:52:53-05:00", "utc": "1982-05-06T00:52:53Z", "ms": 389494373066.5361 }, "end": { "local": "1982-05-05T21:11:19-05:00", "utc": "1982-05-06T02:11:19Z", "ms": 389499078719.52386 } }, "covered_min": 78, "window_min": 78, "qualifies": true }, { "local_date": "1982-05-06", "window": { "start": { "local": "1982-05-06T19:53:57-05:00", "utc": "1982-05-07T00:53:57Z", "ms": 389580837327.4018 }, "end": { "local": "1982-05-06T21:12:05-05:00", "utc": "1982-05-07T02:12:05Z", "ms": 389585524690.35657 } }, "covered_min": 0, "window_min": 78, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:17 on Wed 5 May to 18:18 on Thu 6 May.", "fact": "1982-05-05T22:16:39Z → 1982-05-06T23:18:16Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:53–21:11 on the 5th, 19:54–21:12 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 78 of 78 minutes on the 5th and 0 of 78 on the 6th.", "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 5741 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Chicago, 1982: Wednesday 5 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": "1982-05-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-05", "confidence": "determinate" } ], "quote": "In Chicago, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 1982 falls on Wednesday 5 May. Caturdaśī runs from 17:17 on Wed 5 May to 18:18 on Thu 6 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18404, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-05-06T18:18:16-05:00", "utc": "1982-05-06T23:18:16Z", "ms": 389575095884.7909 }, "end": { "local": "1982-05-07T19:44:40-05:00", "utc": "1982-05-08T00:44:40Z", "ms": 389666679571.9031 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-06T18:18:16-05:00", "utc": "1982-05-06T23:18:16Z", "ms": 389575095884.7909 }, "end": { "local": "1982-05-07T19:44:40-05:00", "utc": "1982-05-08T00:44:40Z", "ms": 389666679571.9031 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-05-06", "window": { "start": { "local": "1982-05-06T12:23:31-05:00", "utc": "1982-05-06T17:23:31Z", "ms": 389553811395.6732 }, "end": { "local": "1982-05-06T13:11:31-05:00", "utc": "1982-05-06T18:11:31Z", "ms": 389556691395.6732 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-05-07", "window": { "start": { "local": "1982-05-07T12:23:27-05:00", "utc": "1982-05-07T17:23:27Z", "ms": 389640206934.25305 }, "end": { "local": "1982-05-07T13:11:27-05:00", "utc": "1982-05-07T18:11:27Z", "ms": 389643086934.25305 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:18 on Thu 6 May to 19:45 on Fri 7 May.", "fact": "1982-05-06T23:18:16Z → 1982-05-08T00:44:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 6th, 12:23–13:11 on the 7th.", "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 6th and 48 of 48 on the 7th.", "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 18404 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Chicago, 1982: Friday 7 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": "1982-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-07", "confidence": "determinate" } ], "quote": "In Chicago, Buddha Pūrṇimā 1982 falls on Friday 7 May. Pūrṇimā runs from 18:18 on Thu 6 May to 19:45 on Fri 7 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18404, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-05-06T18:18:16-05:00", "utc": "1982-05-06T23:18:16Z", "ms": 389575095884.7909 }, "end": { "local": "1982-05-07T19:44:40-05:00", "utc": "1982-05-08T00:44:40Z", "ms": 389666679571.9031 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-06T18:18:16-05:00", "utc": "1982-05-06T23:18:16Z", "ms": 389575095884.7909 }, "end": { "local": "1982-05-07T19:44:40-05:00", "utc": "1982-05-08T00:44:40Z", "ms": 389666679571.9031 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-05-06", "window": { "start": { "local": "1982-05-06T12:23:31-05:00", "utc": "1982-05-06T17:23:31Z", "ms": 389553811395.6732 }, "end": { "local": "1982-05-06T13:11:31-05:00", "utc": "1982-05-06T18:11:31Z", "ms": 389556691395.6732 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-05-07", "window": { "start": { "local": "1982-05-07T12:23:27-05:00", "utc": "1982-05-07T17:23:27Z", "ms": 389640206934.25305 }, "end": { "local": "1982-05-07T13:11:27-05:00", "utc": "1982-05-07T18:11:27Z", "ms": 389643086934.25305 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:18 on Thu 6 May to 19:45 on Fri 7 May.", "fact": "1982-05-06T23:18:16Z → 1982-05-08T00:44:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 6th, 12:23–13:11 on the 7th.", "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 6th and 48 of 48 on the 7th.", "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 18404 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Chicago, 1982: Friday 7 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": "1982-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-07", "confidence": "determinate" } ], "quote": "In Chicago, Sampat Gaurī Vrata 1982 falls on Friday 7 May. Pūrṇimā runs from 18:18 on Thu 6 May to 19:45 on Fri 7 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/sankashta-chaturthi?on=1982-05-11", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13023, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-05-11T02:14:54-05:00", "utc": "1982-05-11T07:14:54Z", "ms": 389949293804.8907 }, "end": { "local": "1982-05-12T04:51:14-05:00", "utc": "1982-05-12T09:51:14Z", "ms": 390045073898.37036 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-11T02:14:54-05:00", "utc": "1982-05-11T07:14:54Z", "ms": 389949293804.8907 }, "end": { "local": "1982-05-12T04:51:14-05:00", "utc": "1982-05-12T09:51:14Z", "ms": 390045073898.37036 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-05-10", "window": { "start": { "local": "1982-05-10T22:37:51-05:00", "utc": "1982-05-11T03:37:51Z", "ms": 389936270967.483 }, "end": { "local": "1982-05-10T22:37:51-05:00", "utc": "1982-05-11T03:37:51Z", "ms": 389936270967.483 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-05-11", "window": { "start": { "local": "1982-05-11T23:31:07-05:00", "utc": "1982-05-12T04:31:07Z", "ms": 390025866992.2374 }, "end": { "local": "1982-05-11T23:31:07-05:00", "utc": "1982-05-12T04:31:07Z", "ms": 390025866992.2374 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:15 on Tue 11 May to 04:51 on Wed 12 May.", "fact": "1982-05-11T07:14:54Z → 1982-05-12T09:51:14Z" }, { "step": "kaala", "text": "Moonrise is at 22:38 on the 10th and 23:31 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 10th and is on the 11th.", "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 13023 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 1982: Tuesday 11 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": "1982-05-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-11", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 1982 falls on Tuesday 11 May. Caturthī runs from 02:15 on Tue 11 May to 04:51 on Wed 12 May and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/sankashta-chaturthi?on=1982-05-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/ekadashi?on=1982-05-19", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20584, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-05-18T12:30:34-05:00", "utc": "1982-05-18T17:30:34Z", "ms": 390591034129.2903 }, "end": { "local": "1982-05-19T11:10:20-05:00", "utc": "1982-05-19T16:10:20Z", "ms": 390672620311.819 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-18T12:30:34-05:00", "utc": "1982-05-18T17:30:34Z", "ms": 390591034129.2903 }, "end": { "local": "1982-05-19T11:10:20-05:00", "utc": "1982-05-19T16:10:20Z", "ms": 390672620311.819 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-05-18", "window": { "start": { "local": "1982-05-18T05:28:10-05:00", "utc": "1982-05-18T10:28:10Z", "ms": 390565690437.54895 }, "end": { "local": "1982-05-18T05:28:10-05:00", "utc": "1982-05-18T10:28:10Z", "ms": 390565690437.54895 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-05-19", "window": { "start": { "local": "1982-05-19T05:27:17-05:00", "utc": "1982-05-19T10:27:17Z", "ms": 390652036518.6106 }, "end": { "local": "1982-05-19T05:27:17-05:00", "utc": "1982-05-19T10:27:17Z", "ms": 390652036518.6106 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:31 on Tue 18 May to 11:10 on Wed 19 May.", "fact": "1982-05-18T17:30:34Z → 1982-05-19T16:10:20Z" }, { "step": "kaala", "text": "Sunrise is at 05:28 on the 18th and 05:27 on the 19th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 18th and is on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20584 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Chicago, 1982: Wednesday 19 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": "1982-05-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-19", "confidence": "determinate" } ], "quote": "In Chicago, Aparā Ekādaśī 1982 falls on Wednesday 19 May. Ekādaśī runs from 12:31 on Tue 18 May to 11:10 on Wed 19 May and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-05-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-05-20", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32356, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-05-20T09:04:56-05:00", "utc": "1982-05-20T14:04:56Z", "ms": 390751496084.20465 }, "end": { "local": "1982-05-21T06:21:51-05:00", "utc": "1982-05-21T11:21:51Z", "ms": 390828111282.6965 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-20T09:04:56-05:00", "utc": "1982-05-20T14:04:56Z", "ms": 390751496084.20465 }, "end": { "local": "1982-05-21T06:21:51-05:00", "utc": "1982-05-21T11:21:51Z", "ms": 390828111282.6965 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-05-19", "window": { "start": { "local": "1982-05-19T20:07:19-05:00", "utc": "1982-05-20T01:07:19Z", "ms": 390704838823.0985 }, "end": { "local": "1982-05-19T21:21:52-05:00", "utc": "1982-05-20T02:21:52Z", "ms": 390709311563.5738 } }, "covered_min": 0, "window_min": 75, "qualifies": false }, { "local_date": "1982-05-20", "window": { "start": { "local": "1982-05-20T20:08:17-05:00", "utc": "1982-05-21T01:08:17Z", "ms": 390791296773.70764 }, "end": { "local": "1982-05-20T21:22:35-05:00", "utc": "1982-05-21T02:22:35Z", "ms": 390795755075.3371 } }, "covered_min": 74, "window_min": 74, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 09:05 on Thu 20 May to 06:22 on Fri 21 May.", "fact": "1982-05-20T14:04:56Z → 1982-05-21T11:21:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:07–21:22 on the 19th, 20:08–21:23 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 75 minutes on the 19th and 74 of 74 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 32356 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 1982: Thursday 20 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": "1982-05-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-20", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 1982 falls on Thursday 20 May. Trayodaśī runs from 09:05 on Thu 20 May to 06:22 on Fri 21 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-05-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/shivaratri?on=1982-05-21", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7158, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-05-21T06:21:51-05:00", "utc": "1982-05-21T11:21:51Z", "ms": 390828111282.6965 }, "end": { "local": "1982-05-22T03:10:18-05:00", "utc": "1982-05-22T08:10:18Z", "ms": 390903017653.6283 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-21T06:21:51-05:00", "utc": "1982-05-21T11:21:51Z", "ms": 390828111282.6965 }, "end": { "local": "1982-05-22T03:10:18-05:00", "utc": "1982-05-22T08:10:18Z", "ms": 390903017653.6283 } }, "kaala": "nishita", "days": [ { "local_date": "1982-05-20", "window": { "start": { "local": "1982-05-21T00:22:55-05:00", "utc": "1982-05-21T05:22:55Z", "ms": 390806575404.8181 }, "end": { "local": "1982-05-21T01:10:55-05:00", "utc": "1982-05-21T06:10:55Z", "ms": 390809455404.8181 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-05-21", "window": { "start": { "local": "1982-05-22T00:23:00-05:00", "utc": "1982-05-22T05:23:00Z", "ms": 390892979760.8767 }, "end": { "local": "1982-05-22T01:11:00-05:00", "utc": "1982-05-22T06:11:00Z", "ms": 390895859760.8767 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 06:22 on Fri 21 May to 03:10 on Sat 22 May.", "fact": "1982-05-21T11:21:51Z → 1982-05-22T08:10:18Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:23–01:11 on the 20th, 00:23–01:11 on the 21st.", "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 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7158 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 1982: Friday 21 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": "1982-05-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-21", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 1982 falls on Friday 21 May. Caturdaśī runs from 06:22 on Fri 21 May to 03:10 on Sat 22 May and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/shivaratri?on=1982-05-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 650, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1982-05-24T16:25:56-05:00", "utc": "1982-05-24T21:25:56Z", "ms": 391123555582.3249 }, "end": { "local": "1982-05-25T13:00:53-05:00", "utc": "1982-05-25T18:00:53Z", "ms": 391197653021.0461 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-24T16:25:56-05:00", "utc": "1982-05-24T21:25:56Z", "ms": 391123555582.3249 }, "end": { "local": "1982-05-25T13:00:53-05:00", "utc": "1982-05-25T18:00:53Z", "ms": 391197653021.0461 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-05-24", "window": { "start": { "local": "1982-05-24T12:23:37-05:00", "utc": "1982-05-24T17:23:37Z", "ms": 391109017463.58704 }, "end": { "local": "1982-05-24T13:11:37-05:00", "utc": "1982-05-24T18:11:37Z", "ms": 391111897463.58704 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-05-25", "window": { "start": { "local": "1982-05-25T12:23:43-05:00", "utc": "1982-05-25T17:23:43Z", "ms": 391195422931.4099 }, "end": { "local": "1982-05-25T13:11:43-05:00", "utc": "1982-05-25T18:11:43Z", "ms": 391198302931.4099 } }, "covered_min": 37, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 16:26 on Mon 24 May to 13:01 on Tue 25 May.", "fact": "1982-05-24T21:25:56Z → 1982-05-25T18:00:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 24th, 12:24–13:12 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 24th and 37 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 650 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Chicago, 1982: Tuesday 25 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rambha-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Rambha trtiya (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-05-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-25", "confidence": "determinate" } ], "quote": "In Chicago, Rambhā Tṛtīyā 1982 falls on Tuesday 25 May. Tṛtīyā runs from 16:26 on Mon 24 May to 13:01 on Tue 25 May and covers 37 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/vinayaka-chaturthi?on=1982-05-25", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 650, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-05-25T13:00:53-05:00", "utc": "1982-05-25T18:00:53Z", "ms": 391197653021.0461 }, "end": { "local": "1982-05-26T09:55:25-05:00", "utc": "1982-05-26T14:55:25Z", "ms": 391272924517.29987 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-25T13:00:53-05:00", "utc": "1982-05-25T18:00:53Z", "ms": 391197653021.0461 }, "end": { "local": "1982-05-26T09:55:25-05:00", "utc": "1982-05-26T14:55:25Z", "ms": 391272924517.29987 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-05-25", "window": { "start": { "local": "1982-05-25T12:23:43-05:00", "utc": "1982-05-25T17:23:43Z", "ms": 391195422931.4099 }, "end": { "local": "1982-05-25T13:11:43-05:00", "utc": "1982-05-25T18:11:43Z", "ms": 391198302931.4099 } }, "covered_min": 11, "window_min": 48, "qualifies": true }, { "local_date": "1982-05-26", "window": { "start": { "local": "1982-05-26T12:23:49-05:00", "utc": "1982-05-26T17:23:49Z", "ms": 391281828865.7576 }, "end": { "local": "1982-05-26T13:11:49-05:00", "utc": "1982-05-26T18:11:49Z", "ms": 391284708865.7576 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:01 on Tue 25 May to 09:55 on Wed 26 May.", "fact": "1982-05-25T18:00:53Z → 1982-05-26T14:55:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 25th, 12:24–13:12 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 11 of 48 minutes on the 25th and 0 of 48 on the 26th.", "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 650 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 1982: Tuesday 25 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": "1982-05-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-25", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 1982 falls on Tuesday 25 May. Caturthī runs from 13:01 on Tue 25 May to 09:55 on Wed 26 May and covers 11 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/vinayaka-chaturthi?on=1982-05-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18444, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1982-05-27T07:16:32-05:00", "utc": "1982-05-27T12:16:32Z", "ms": 391349791659.15784 }, "end": { "local": "1982-05-28T05:09:39-05:00", "utc": "1982-05-28T10:09:39Z", "ms": 391428578832.09894 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-27T07:16:32-05:00", "utc": "1982-05-27T12:16:32Z", "ms": 391349791659.15784 }, "end": { "local": "1982-05-28T05:09:39-05:00", "utc": "1982-05-28T10:09:39Z", "ms": 391428578832.09894 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-05-27", "window": { "start": { "local": "1982-05-27T12:23:55-05:00", "utc": "1982-05-27T17:23:55Z", "ms": 391368235251.101 }, "end": { "local": "1982-05-27T13:11:55-05:00", "utc": "1982-05-27T18:11:55Z", "ms": 391371115251.101 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-05-28", "window": { "start": { "local": "1982-05-28T12:24:02-05:00", "utc": "1982-05-28T17:24:02Z", "ms": 391454642072.71313 }, "end": { "local": "1982-05-28T13:12:02-05:00", "utc": "1982-05-28T18:12:02Z", "ms": 391457522072.71313 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 07:17 on Thu 27 May to 05:10 on Fri 28 May.", "fact": "1982-05-27T12:16:32Z → 1982-05-28T10:09:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 27th, 12:24–13:12 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 27th and 0 of 48 on the 28th.", "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 18444 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Chicago, 1982: Thursday 27 May.", "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": "1982-05-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-27", "confidence": "determinate" } ], "quote": "In Chicago, Araṇya Gaurī Vrata 1982 falls on Thursday 27 May. Ṣaṣṭhī runs from 07:17 on Thu 27 May to 05:10 on Fri 28 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-05-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18444, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1982-05-27T07:16:32-05:00", "utc": "1982-05-27T12:16:32Z", "ms": 391349791659.15784 }, "end": { "local": "1982-05-28T05:09:39-05:00", "utc": "1982-05-28T10:09:39Z", "ms": 391428578832.09894 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1982-05-27T07:16:32-05:00", "utc": "1982-05-27T12:16:32Z", "ms": 391349791659.15784 }, "end": { "local": "1982-05-28T05:09:39-05:00", "utc": "1982-05-28T10:09:39Z", "ms": 391428578832.09894 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-05-27", "window": { "start": { "local": "1982-05-27T12:23:55-05:00", "utc": "1982-05-27T17:23:55Z", "ms": 391368235251.101 }, "end": { "local": "1982-05-27T13:11:55-05:00", "utc": "1982-05-27T18:11:55Z", "ms": 391371115251.101 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-05-28", "window": { "start": { "local": "1982-05-28T12:24:02-05:00", "utc": "1982-05-28T17:24:02Z", "ms": 391454642072.71313 }, "end": { "local": "1982-05-28T13:12:02-05:00", "utc": "1982-05-28T18:12:02Z", "ms": 391457522072.71313 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 07:17 on Thu 27 May to 05:10 on Fri 28 May.", "fact": "1982-05-27T12:16:32Z → 1982-05-28T10:09:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 27th, 12:24–13:12 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 27th and 0 of 48 on the 28th.", "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 18444 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Chicago, 1982: Thursday 27 May.", "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": "1982-05-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-05-27", "confidence": "determinate" } ], "quote": "In Chicago, Skanda Ṣaṣṭhī (Jyaiṣṭha) 1982 falls on Thursday 27 May. Ṣaṣṭhī runs from 07:17 on Thu 27 May to 05:10 on Fri 28 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-06-01", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-06-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6189, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-06-01T02:44:48-05:00", "utc": "1982-06-01T07:44:48Z", "ms": 391765487897.8431 }, "end": { "local": "1982-06-02T03:34:48-05:00", "utc": "1982-06-02T08:34:48Z", "ms": 391854888376.08093 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1982-06-01T02:44:48-05:00", "utc": "1982-06-01T07:44:48Z", "ms": 391765487897.8431 }, "end": { "local": "1982-06-02T03:34:48-05:00", "utc": "1982-06-02T08:34:48Z", "ms": 391854888376.08093 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-06-01", "window": { "start": { "local": "1982-06-01T05:18:25-05:00", "utc": "1982-06-01T10:18:25Z", "ms": 391774704769.917 }, "end": { "local": "1982-06-01T05:18:25-05:00", "utc": "1982-06-01T10:18:25Z", "ms": 391774704769.917 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-06-02", "window": { "start": { "local": "1982-06-02T05:17:58-05:00", "utc": "1982-06-02T10:17:58Z", "ms": 391861077522.2606 }, "end": { "local": "1982-06-02T05:17:58-05:00", "utc": "1982-06-02T10:17:58Z", "ms": 391861077522.2606 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:45 on Tue 1 Jun to 03:35 on Wed 2 Jun.", "fact": "1982-06-01T07:44:48Z → 1982-06-02T08:34:48Z" }, { "step": "kaala", "text": "Sunrise is at 05:18 on the 1st and 05:18 on the 2nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 1st and is not on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6189 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Chicago, 1982: Tuesday 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": "1982-06-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-06-01", "confidence": "determinate" } ], "quote": "In Chicago, Nirjalā Ekādaśī 1982 falls on Tuesday 1 June. Ekādaśī runs from 02:45 on Tue 1 Jun to 03:35 on Wed 2 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-06-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-06-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27091, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1982-06-02T03:34:48-05:00", "utc": "1982-06-02T08:34:48Z", "ms": 391854888376.08093 }, "end": { "local": "1982-06-03T04:53:20-05:00", "utc": "1982-06-03T09:53:20Z", "ms": 391946000099.45496 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1982-06-02T03:34:48-05:00", "utc": "1982-06-02T08:34:48Z", "ms": 391854888376.08093 }, "end": { "local": "1982-06-03T04:53:20-05:00", "utc": "1982-06-03T09:53:20Z", "ms": 391946000099.45496 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-06-02", "window": { "start": { "local": "1982-06-02T12:24:42-05:00", "utc": "1982-06-02T17:24:42Z", "ms": 391886682246.6024 }, "end": { "local": "1982-06-02T13:12:42-05:00", "utc": "1982-06-02T18:12:42Z", "ms": 391889562246.6024 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-06-03", "window": { "start": { "local": "1982-06-03T12:24:51-05:00", "utc": "1982-06-03T17:24:51Z", "ms": 391973091400.71606 }, "end": { "local": "1982-06-03T13:12:51-05:00", "utc": "1982-06-03T18:12:51Z", "ms": 391975971400.71606 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 03:35 on Wed 2 Jun to 04:53 on Thu 3 Jun.", "fact": "1982-06-02T08:34:48Z → 1982-06-03T09:53:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 2nd, 12:25–13:13 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 27091 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Chicago, 1982: Wednesday 2 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": "1982-06-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-06-02", "confidence": "determinate" } ], "quote": "In Chicago, Śrī Rāma Dvādaśī 1982 falls on Wednesday 2 June. Dvādaśī runs from 03:35 on Wed 2 Jun to 04:53 on Thu 3 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/pradosha-vrata?on=1982-06-03", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-06-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26528, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-06-03T04:53:20-05:00", "utc": "1982-06-03T09:53:20Z", "ms": 391946000099.45496 }, "end": { "local": "1982-06-04T06:36:26-05:00", "utc": "1982-06-04T11:36:26Z", "ms": 392038586146.6382 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1982-06-03T04:53:20-05:00", "utc": "1982-06-03T09:53:20Z", "ms": 391946000099.45496 }, "end": { "local": "1982-06-04T06:36:26-05:00", "utc": "1982-06-04T11:36:26Z", "ms": 392038586146.6382 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-06-02", "window": { "start": { "local": "1982-06-02T20:19:27-05:00", "utc": "1982-06-03T01:19:27Z", "ms": 391915166970.9442 }, "end": { "local": "1982-06-02T21:31:12-05:00", "utc": "1982-06-03T02:31:12Z", "ms": 391919471682.05334 } }, "covered_min": 0, "window_min": 72, "qualifies": false }, { "local_date": "1982-06-03", "window": { "start": { "local": "1982-06-03T20:20:10-05:00", "utc": "1982-06-04T01:20:10Z", "ms": 392001610497.1693 }, "end": { "local": "1982-06-03T21:31:46-05:00", "utc": "1982-06-04T02:31:46Z", "ms": 392005906314.52734 } }, "covered_min": 72, "window_min": 72, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:53 on Thu 3 Jun to 06:36 on Fri 4 Jun.", "fact": "1982-06-03T09:53:20Z → 1982-06-04T11:36:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:19–21:31 on the 2nd, 20:20–21:32 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 0 of 72 minutes on the 2nd and 72 of 72 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 26528 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 1982: Thursday 3 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": "1982-06-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-06-03", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 1982 falls on Thursday 3 June. Trayodaśī runs from 04:53 on Thu 3 Jun to 06:36 on Fri 4 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-06-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-06-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33771, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-06-05T08:39:57-05:00", "utc": "1982-06-05T13:39:57Z", "ms": 392132397054.39185 }, "end": { "local": "1982-06-06T10:59:22-05:00", "utc": "1982-06-06T15:59:22Z", "ms": 392227161869.14667 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1982-06-05T08:39:57-05:00", "utc": "1982-06-05T13:39:57Z", "ms": 392132397054.39185 }, "end": { "local": "1982-06-06T10:59:22-05:00", "utc": "1982-06-06T15:59:22Z", "ms": 392227161869.14667 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-06-05", "window": { "start": { "local": "1982-06-05T20:21:33-05:00", "utc": "1982-06-06T01:21:33Z", "ms": 392174493433.771 }, "end": { "local": "1982-06-05T21:32:53-05:00", "utc": "1982-06-06T02:32:53Z", "ms": 392178772833.9845 } }, "covered_min": 71, "window_min": 71, "qualifies": true }, { "local_date": "1982-06-06", "window": { "start": { "local": "1982-06-06T20:22:13-05:00", "utc": "1982-06-07T01:22:13Z", "ms": 392260932766.4212 }, "end": { "local": "1982-06-06T21:33:25-05:00", "utc": "1982-06-07T02:33:25Z", "ms": 392265204655.6831 } }, "covered_min": 0, "window_min": 71, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 08:40 on Sat 5 Jun to 10:59 on Sun 6 Jun.", "fact": "1982-06-05T13:39:57Z → 1982-06-06T15:59:22Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:22–21:33 on the 5th, 20:22–21:33 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 71 of 71 minutes on the 5th and 0 of 71 on the 6th.", "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 33771 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Chicago, 1982: Saturday 5 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": "1982-06-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-06-05", "confidence": "determinate" } ], "quote": "In Chicago, Vaṭa Sāvitrī Vrata 1982 falls on Saturday 5 June. Pūrṇimā runs from 08:40 on Sat 5 Jun to 10:59 on Sun 6 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/sankashta-chaturthi?on=1982-06-09", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-06-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10126, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-06-09T18:34:53-05:00", "utc": "1982-06-09T23:34:53Z", "ms": 392513692506.57367 }, "end": { "local": "1982-06-10T20:53:28-05:00", "utc": "1982-06-11T01:53:28Z", "ms": 392608408466.14136 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-06-09T18:34:53-05:00", "utc": "1982-06-09T23:34:53Z", "ms": 392513692506.57367 }, "end": { "local": "1982-06-10T20:53:28-05:00", "utc": "1982-06-11T01:53:28Z", "ms": 392608408466.14136 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-06-09", "window": { "start": { "local": "1982-06-09T23:02:10-05:00", "utc": "1982-06-10T04:02:10Z", "ms": 392529730094.6225 }, "end": { "local": "1982-06-09T23:02:10-05:00", "utc": "1982-06-10T04:02:10Z", "ms": 392529730094.6225 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-06-10", "window": { "start": { "local": "1982-06-10T23:42:14-05:00", "utc": "1982-06-11T04:42:14Z", "ms": 392618534354.9466 }, "end": { "local": "1982-06-10T23:42:14-05:00", "utc": "1982-06-11T04:42:14Z", "ms": 392618534354.9466 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:35 on Wed 9 Jun to 20:53 on Thu 10 Jun.", "fact": "1982-06-09T23:34:53Z → 1982-06-11T01:53:28Z" }, { "step": "kaala", "text": "Moonrise is at 23:02 on the 9th and 23:42 on the 10th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 9th and is not on the 10th.", "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 10126 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 1982: Wednesday 9 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": "1982-06-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-06-09", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 1982 falls on Wednesday 9 June. Caturthī runs from 18:35 on Wed 9 Jun to 20:53 on Thu 10 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/sankashta-chaturthi?on=1982-06-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/ekadashi?on=1982-06-17", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-06-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23721, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-06-16T22:39:55-05:00", "utc": "1982-06-17T03:39:55Z", "ms": 393133194634.54 }, "end": { "local": "1982-06-17T20:24:36-05:00", "utc": "1982-06-18T01:24:36Z", "ms": 393211476061.9789 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-06-16T22:39:55-05:00", "utc": "1982-06-17T03:39:55Z", "ms": 393133194634.54 }, "end": { "local": "1982-06-17T20:24:36-05:00", "utc": "1982-06-18T01:24:36Z", "ms": 393211476061.9789 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-06-17", "window": { "start": { "local": "1982-06-17T05:15:16-05:00", "utc": "1982-06-17T10:15:16Z", "ms": 393156915930.38965 }, "end": { "local": "1982-06-17T05:15:16-05:00", "utc": "1982-06-17T10:15:16Z", "ms": 393156915930.38965 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-06-18", "window": { "start": { "local": "1982-06-18T05:15:22-05:00", "utc": "1982-06-18T10:15:22Z", "ms": 393243321617.12494 }, "end": { "local": "1982-06-18T05:15:22-05:00", "utc": "1982-06-18T10:15:22Z", "ms": 393243321617.12494 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:40 on Wed 16 Jun to 20:25 on Thu 17 Jun.", "fact": "1982-06-17T03:39:55Z → 1982-06-18T01:24:36Z" }, { "step": "kaala", "text": "Sunrise is at 05:15 on the 17th and 05:15 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 17th and is not on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23721 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Chicago, 1982: Thursday 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": "1982-06-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-06-17", "confidence": "determinate" } ], "quote": "In Chicago, Yoginī Ekādaśī 1982 falls on Thursday 17 June. Ekādaśī runs from 22:40 on Wed 16 Jun to 20:25 on Thu 17 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-06-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-06-18", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-06-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10464, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-06-18T17:33:35-05:00", "utc": "1982-06-18T22:33:35Z", "ms": 393287615478.6087 }, "end": { "local": "1982-06-19T14:14:57-05:00", "utc": "1982-06-19T19:14:57Z", "ms": 393362096888.5733 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-06-18T17:33:35-05:00", "utc": "1982-06-18T22:33:35Z", "ms": 393287615478.6087 }, "end": { "local": "1982-06-19T14:14:57-05:00", "utc": "1982-06-19T19:14:57Z", "ms": 393362096888.5733 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-06-18", "window": { "start": { "local": "1982-06-18T20:27:59-05:00", "utc": "1982-06-19T01:27:59Z", "ms": 393298079281.71405 }, "end": { "local": "1982-06-18T21:38:19-05:00", "utc": "1982-06-19T02:38:19Z", "ms": 393302299284.5486 } }, "covered_min": 70, "window_min": 70, "qualifies": true }, { "local_date": "1982-06-19", "window": { "start": { "local": "1982-06-19T20:28:17-05:00", "utc": "1982-06-20T01:28:17Z", "ms": 393384496646.3166 }, "end": { "local": "1982-06-19T21:38:36-05:00", "utc": "1982-06-20T02:38:36Z", "ms": 393388715622.0424 } }, "covered_min": 0, "window_min": 70, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:34 on Fri 18 Jun to 14:15 on Sat 19 Jun.", "fact": "1982-06-18T22:33:35Z → 1982-06-19T19:14:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:28–21:38 on the 18th, 20:28–21:39 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 70 of 70 minutes on the 18th and 0 of 70 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10464 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 1982: Friday 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": "1982-06-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-06-18", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 1982 falls on Friday 18 June. Trayodaśī runs from 17:34 on Fri 18 Jun to 14:15 on Sat 19 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-06-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/shivaratri?on=1982-06-19", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-06-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33709, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-06-19T14:14:57-05:00", "utc": "1982-06-19T19:14:57Z", "ms": 393362096888.5733 }, "end": { "local": "1982-06-20T10:37:47-05:00", "utc": "1982-06-20T15:37:47Z", "ms": 393435467132.3619 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-06-19T14:14:57-05:00", "utc": "1982-06-19T19:14:57Z", "ms": 393362096888.5733 }, "end": { "local": "1982-06-20T10:37:47-05:00", "utc": "1982-06-20T15:37:47Z", "ms": 393435467132.3619 } }, "kaala": "nishita", "days": [ { "local_date": "1982-06-18", "window": { "start": { "local": "1982-06-19T00:27:44-05:00", "utc": "1982-06-19T05:27:44Z", "ms": 393312464292.3436 }, "end": { "local": "1982-06-19T01:15:44-05:00", "utc": "1982-06-19T06:15:44Z", "ms": 393315344292.3436 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-06-19", "window": { "start": { "local": "1982-06-20T00:27:58-05:00", "utc": "1982-06-20T05:27:58Z", "ms": 393398877805.2885 }, "end": { "local": "1982-06-20T01:15:58-05:00", "utc": "1982-06-20T06:15:58Z", "ms": 393401757805.2885 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:15 on Sat 19 Jun to 10:38 on Sun 20 Jun.", "fact": "1982-06-19T19:14:57Z → 1982-06-20T15:37:47Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:28–01:16 on the 18th, 00:28–01:16 on the 19th.", "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 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33709 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 1982: Saturday 19 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": "1982-06-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-06-19", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 1982 falls on Saturday 19 June. Caturdaśī runs from 14:15 on Sat 19 Jun to 10:38 on Sun 20 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/shivaratri?on=1982-06-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-06-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33708, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1982-06-22T03:06:42-05:00", "utc": "1982-06-22T08:06:42Z", "ms": 393581202280.80035 }, "end": { "local": "1982-06-22T23:32:16-05:00", "utc": "1982-06-23T04:32:16Z", "ms": 393654735579.2003 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-06-22T03:06:42-05:00", "utc": "1982-06-22T08:06:42Z", "ms": 393581202280.80035 }, "end": { "local": "1982-06-22T23:32:16-05:00", "utc": "1982-06-23T04:32:16Z", "ms": 393654735579.2003 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-06-22", "window": { "start": { "local": "1982-06-22T12:28:31-05:00", "utc": "1982-06-22T17:28:31Z", "ms": 393614910588.75806 }, "end": { "local": "1982-06-22T13:16:31-05:00", "utc": "1982-06-22T18:16:31Z", "ms": 393617790588.75806 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-06-23", "window": { "start": { "local": "1982-06-23T12:28:43-05:00", "utc": "1982-06-23T17:28:43Z", "ms": 393701323041.5819 }, "end": { "local": "1982-06-23T13:16:43-05:00", "utc": "1982-06-23T18:16:43Z", "ms": 393704203041.5819 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 03:07 on Tue 22 Jun to 23:32 on Tue 22 Jun.", "fact": "1982-06-22T08:06:42Z → 1982-06-23T04:32:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 22nd, 12:29–13:17 on the 23rd.", "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 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 33708 s" }, { "step": "ruling", "text": "Rathayātrā, Chicago, 1982: Tuesday 22 June.", "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": "1982-06-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-06-22", "confidence": "determinate" } ], "quote": "In Chicago, Rathayātrā 1982 falls on Tuesday 22 June. Dvitīyā runs from 03:07 on Tue 22 Jun to 23:32 on Tue 22 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/vinayaka-chaturthi?on=1982-06-24", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-06-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15252, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-06-23T20:17:37-05:00", "utc": "1982-06-24T01:17:37Z", "ms": 393729456710.85205 }, "end": { "local": "1982-06-24T17:31:08-05:00", "utc": "1982-06-24T22:31:08Z", "ms": 393805867549.8098 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-06-23T20:17:37-05:00", "utc": "1982-06-24T01:17:37Z", "ms": 393729456710.85205 }, "end": { "local": "1982-06-24T17:31:08-05:00", "utc": "1982-06-24T22:31:08Z", "ms": 393805867549.8098 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-06-23", "window": { "start": { "local": "1982-06-23T12:28:43-05:00", "utc": "1982-06-23T17:28:43Z", "ms": 393701323041.5819 }, "end": { "local": "1982-06-23T13:16:43-05:00", "utc": "1982-06-23T18:16:43Z", "ms": 393704203041.5819 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-06-24", "window": { "start": { "local": "1982-06-24T12:28:55-05:00", "utc": "1982-06-24T17:28:55Z", "ms": 393787735403.6415 }, "end": { "local": "1982-06-24T13:16:55-05:00", "utc": "1982-06-24T18:16:55Z", "ms": 393790615403.6415 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:18 on Wed 23 Jun to 17:31 on Thu 24 Jun.", "fact": "1982-06-24T01:17:37Z → 1982-06-24T22:31:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 23rd, 12:29–13:17 on the 24th.", "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 23rd and 48 of 48 on the 24th.", "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 15252 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 1982: Thursday 24 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": "1982-06-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-06-24", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 1982 falls on Thursday 24 June. Caturthī runs from 20:18 on Wed 23 Jun to 17:31 on Thu 24 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/vinayaka-chaturthi?on=1982-06-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-06-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7368, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1982-06-24T17:31:08-05:00", "utc": "1982-06-24T22:31:08Z", "ms": 393805867549.8098 }, "end": { "local": "1982-06-25T15:19:56-05:00", "utc": "1982-06-25T20:19:56Z", "ms": 393884396065.8062 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-06-24T17:31:08-05:00", "utc": "1982-06-24T22:31:08Z", "ms": 393805867549.8098 }, "end": { "local": "1982-06-25T15:19:56-05:00", "utc": "1982-06-25T20:19:56Z", "ms": 393884396065.8062 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-06-24", "window": { "start": { "local": "1982-06-24T12:28:55-05:00", "utc": "1982-06-24T17:28:55Z", "ms": 393787735403.6415 }, "end": { "local": "1982-06-24T13:16:55-05:00", "utc": "1982-06-24T18:16:55Z", "ms": 393790615403.6415 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-06-25", "window": { "start": { "local": "1982-06-25T12:29:08-05:00", "utc": "1982-06-25T17:29:08Z", "ms": 393874147648.0431 }, "end": { "local": "1982-06-25T13:17:08-05:00", "utc": "1982-06-25T18:17:08Z", "ms": 393877027648.0431 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 17:31 on Thu 24 Jun to 15:20 on Fri 25 Jun.", "fact": "1982-06-24T22:31:08Z → 1982-06-25T20:19:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 24th, 12:29–13:17 on the 25th.", "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 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7368 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Chicago, 1982: Friday 25 June.", "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": "1982-06-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-06-25", "confidence": "determinate" } ], "quote": "In Chicago, Skanda Pañcamī 1982 falls on Friday 25 June. Pañcamī runs from 17:31 on Thu 24 Jun to 15:20 on Fri 25 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-06-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 877, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1982-06-26T13:49:28-05:00", "utc": "1982-06-26T18:49:28Z", "ms": 393965367526.44836 }, "end": { "local": "1982-06-27T13:02:55-05:00", "utc": "1982-06-27T18:02:55Z", "ms": 394048974964.40765 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-06-26T13:49:28-05:00", "utc": "1982-06-26T18:49:28Z", "ms": 393965367526.44836 }, "end": { "local": "1982-06-27T13:02:55-05:00", "utc": "1982-06-27T18:02:55Z", "ms": 394048974964.40765 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-06-26", "window": { "start": { "local": "1982-06-26T12:29:20-05:00", "utc": "1982-06-26T17:29:20Z", "ms": 393960559749.62164 }, "end": { "local": "1982-06-26T13:17:20-05:00", "utc": "1982-06-26T18:17:20Z", "ms": 393963439749.62164 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-06-27", "window": { "start": { "local": "1982-06-27T12:29:32-05:00", "utc": "1982-06-27T17:29:32Z", "ms": 394046971684.8091 }, "end": { "local": "1982-06-27T13:17:32-05:00", "utc": "1982-06-27T18:17:32Z", "ms": 394049851684.8091 } }, "covered_min": 33, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 13:49 on Sat 26 Jun to 13:03 on Sun 27 Jun.", "fact": "1982-06-26T18:49:28Z → 1982-06-27T18:02:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 26th, 12:30–13:18 on the 27th.", "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 26th and 33 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 877 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Chicago, 1982: Sunday 27 June.", "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": "1982-06-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-06-26", "confidence": "determinate" } ], "quote": "In Chicago, Vivasvat Saptamī 1982 falls on Sunday 27 June. Saptamī runs from 13:49 on Sat 26 Jun to 13:03 on Sun 27 Jun and covers 33 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-07-01", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34827, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-06-30T14:59:25-05:00", "utc": "1982-06-30T19:59:25Z", "ms": 394315164952.5213 }, "end": { "local": "1982-07-01T16:48:24-05:00", "utc": "1982-07-01T21:48:24Z", "ms": 394408104164.0645 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-06-30T14:59:25-05:00", "utc": "1982-06-30T19:59:25Z", "ms": 394315164952.5213 }, "end": { "local": "1982-07-01T16:48:24-05:00", "utc": "1982-07-01T21:48:24Z", "ms": 394408104164.0645 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-06-30", "window": { "start": { "local": "1982-06-30T05:18:58-05:00", "utc": "1982-06-30T10:18:58Z", "ms": 394280337678.86926 }, "end": { "local": "1982-06-30T05:18:58-05:00", "utc": "1982-06-30T10:18:58Z", "ms": 394280337678.86926 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-07-01", "window": { "start": { "local": "1982-07-01T05:19:26-05:00", "utc": "1982-07-01T10:19:26Z", "ms": 394366766048.81696 }, "end": { "local": "1982-07-01T05:19:26-05:00", "utc": "1982-07-01T10:19:26Z", "ms": 394366766048.81696 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:59 on Wed 30 Jun to 16:48 on Thu 1 Jul.", "fact": "1982-06-30T19:59:25Z → 1982-07-01T21:48:24Z" }, { "step": "kaala", "text": "Sunrise is at 05:19 on the 30th and 05:19 on the 1st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 30th and is on the 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 34827 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Chicago, 1982: Thursday 1 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": "1982-07-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-01", "confidence": "determinate" } ], "quote": "In Chicago, Hariśayanī Ekādaśī 1982 falls on Thursday 1 July. Ekādaśī runs from 14:59 on Wed 30 Jun to 16:48 on Thu 1 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-07-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-07-02", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-02", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 775, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-07-02T19:00:20-05:00", "utc": "1982-07-03T00:00:20Z", "ms": 394502420323.2229 }, "end": { "local": "1982-07-03T21:26:50-05:00", "utc": "1982-07-04T02:26:50Z", "ms": 394597609569.8705 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-07-02T19:00:20-05:00", "utc": "1982-07-03T00:00:20Z", "ms": 394502420323.2229 }, "end": { "local": "1982-07-03T21:26:50-05:00", "utc": "1982-07-04T02:26:50Z", "ms": 394597609569.8705 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-07-02", "window": { "start": { "local": "1982-07-02T20:28:57-05:00", "utc": "1982-07-03T01:28:57Z", "ms": 394507737237.0456 }, "end": { "local": "1982-07-02T21:39:50-05:00", "utc": "1982-07-03T02:39:50Z", "ms": 394511989541.0406 } }, "covered_min": 71, "window_min": 71, "qualifies": true }, { "local_date": "1982-07-03", "window": { "start": { "local": "1982-07-03T20:28:46-05:00", "utc": "1982-07-04T01:28:46Z", "ms": 394594125734.645 }, "end": { "local": "1982-07-03T21:39:44-05:00", "utc": "1982-07-04T02:39:44Z", "ms": 394598384108.8092 } }, "covered_min": 58, "window_min": 71, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:00 on Fri 2 Jul to 21:27 on Sat 3 Jul.", "fact": "1982-07-03T00:00:20Z → 1982-07-04T02:26:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:29–21:40 on the 2nd, 20:29–21:40 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 71 of 71 minutes on the 2nd and 58 of 71 on the 3rd.", "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 775 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 1982: Friday 2 July.", "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": "1982-07-02", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-02", "confidence": "boundary" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 1982 falls on Friday 2 July. Trayodaśī runs from 19:00 on Fri 2 Jul to 21:27 on Sat 3 Jul and covers all of pradoṣa that evening. It also reaches the next evening for 58 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/chicago/festivals/1982/pradosha-vrata?on=1982-07-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10240, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-07-04T23:59:45-05:00", "utc": "1982-07-05T04:59:45Z", "ms": 394693184752.4349 }, "end": { "local": "1982-07-06T02:31:36-05:00", "utc": "1982-07-06T07:31:36Z", "ms": 394788695543.2025 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-07-04T23:59:45-05:00", "utc": "1982-07-05T04:59:45Z", "ms": 394693184752.4349 }, "end": { "local": "1982-07-06T02:31:36-05:00", "utc": "1982-07-06T07:31:36Z", "ms": 394788695543.2025 } }, "kaala": "udaya-3", "days": [ { "local_date": "1982-07-05", "window": { "start": { "local": "1982-07-05T05:21:39-05:00", "utc": "1982-07-05T10:21:39Z", "ms": 394712499040.5769 }, "end": { "local": "1982-07-05T08:22:59-05:00", "utc": "1982-07-05T13:22:59Z", "ms": 394723378507.5067 } }, "covered_min": 181, "window_min": 181, "qualifies": true }, { "local_date": "1982-07-06", "window": { "start": { "local": "1982-07-06T05:22:16-05:00", "utc": "1982-07-06T10:22:16Z", "ms": 394798935977.5476 }, "end": { "local": "1982-07-06T08:23:24-05:00", "utc": "1982-07-06T13:23:24Z", "ms": 394809804488.0004 } }, "covered_min": 0, "window_min": 181, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:00 on Sun 4 Jul to 02:32 on Tue 6 Jul.", "fact": "1982-07-05T04:59:45Z → 1982-07-06T07:31:36Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:22–08:23 on the 5th, 05:22–08:23 on the 6th.", "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 181 of 181 minutes on the 5th and 0 of 181 on the 6th.", "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 10240 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Chicago, 1982: Monday 5 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": "1982-07-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-05", "confidence": "determinate" } ], "quote": "In Chicago, Vyāsa Pūjā 1982 falls on Monday 5 July. Pūrṇimā runs from 00:00 on Sun 4 Jul to 02:32 on Tue 6 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35972, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-07-04T23:59:45-05:00", "utc": "1982-07-05T04:59:45Z", "ms": 394693184752.4349 }, "end": { "local": "1982-07-06T02:31:36-05:00", "utc": "1982-07-06T07:31:36Z", "ms": 394788695543.2025 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-07-04T23:59:45-05:00", "utc": "1982-07-05T04:59:45Z", "ms": 394693184752.4349 }, "end": { "local": "1982-07-06T02:31:36-05:00", "utc": "1982-07-06T07:31:36Z", "ms": 394788695543.2025 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-07-05", "window": { "start": { "local": "1982-07-05T12:30:58-05:00", "utc": "1982-07-05T17:30:58Z", "ms": 394738257707.9015 }, "end": { "local": "1982-07-05T13:18:58-05:00", "utc": "1982-07-05T18:18:58Z", "ms": 394741137707.9015 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-07-06", "window": { "start": { "local": "1982-07-06T12:31:07-05:00", "utc": "1982-07-06T17:31:07Z", "ms": 394824667253.6797 }, "end": { "local": "1982-07-06T13:19:07-05:00", "utc": "1982-07-06T18:19:07Z", "ms": 394827547253.6797 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:00 on Sun 4 Jul to 02:32 on Tue 6 Jul.", "fact": "1982-07-05T04:59:45Z → 1982-07-06T07:31:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 5th, 12:31–13:19 on the 6th.", "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 5th and 0 of 48 on the 6th.", "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 35972 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Chicago, 1982: Monday 5 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": "1982-07-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-05", "confidence": "determinate" } ], "quote": "In Chicago, Guru Pūrṇimā 1982 falls on Monday 5 July. Pūrṇimā runs from 00:00 on Sun 4 Jul to 02:32 on Tue 6 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12673, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-07-04T23:59:45-05:00", "utc": "1982-07-05T04:59:45Z", "ms": 394693184752.4349 }, "end": { "local": "1982-07-06T02:31:36-05:00", "utc": "1982-07-06T07:31:36Z", "ms": 394788695543.2025 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-07-04T23:59:45-05:00", "utc": "1982-07-05T04:59:45Z", "ms": 394693184752.4349 }, "end": { "local": "1982-07-06T02:31:36-05:00", "utc": "1982-07-06T07:31:36Z", "ms": 394788695543.2025 } }, "kaala": "sayahna", "days": [ { "local_date": "1982-07-04", "window": { "start": { "local": "1982-07-04T17:27:02-05:00", "utc": "1982-07-04T22:27:02Z", "ms": 394669622398.0836 }, "end": { "local": "1982-07-04T20:28:32-05:00", "utc": "1982-07-05T01:28:32Z", "ms": 394680512112.38544 } }, "covered_min": 0, "window_min": 181, "qualifies": false }, { "local_date": "1982-07-05", "window": { "start": { "local": "1982-07-05T17:26:57-05:00", "utc": "1982-07-05T22:26:57Z", "ms": 394756016908.29626 }, "end": { "local": "1982-07-05T20:28:16-05:00", "utc": "1982-07-06T01:28:16Z", "ms": 394766896375.2261 } }, "covered_min": 181, "window_min": 181, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:00 on Sun 4 Jul to 02:32 on Tue 6 Jul.", "fact": "1982-07-05T04:59:45Z → 1982-07-06T07:31:36Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 17:27–20:29 on the 4th, 17:27–20:28 on the 5th.", "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 181 minutes on the 4th and 181 of 181 on the 5th.", "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 12673 s" }, { "step": "ruling", "text": "Kokilā Vrata, Chicago, 1982: Monday 5 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": "1982-07-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-05", "confidence": "determinate" } ], "quote": "In Chicago, Kokilā Vrata 1982 falls on Monday 5 July. Pūrṇimā runs from 00:00 on Sun 4 Jul to 02:32 on Tue 6 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8408, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-07-04T23:59:45-05:00", "utc": "1982-07-05T04:59:45Z", "ms": 394693184752.4349 }, "end": { "local": "1982-07-06T02:31:36-05:00", "utc": "1982-07-06T07:31:36Z", "ms": 394788695543.2025 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1982-07-04T23:59:45-05:00", "utc": "1982-07-05T04:59:45Z", "ms": 394693184752.4349 }, "end": { "local": "1982-07-06T02:31:36-05:00", "utc": "1982-07-06T07:31:36Z", "ms": 394788695543.2025 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-07-04", "window": { "start": { "local": "1982-07-04T20:28:32-05:00", "utc": "1982-07-05T01:28:32Z", "ms": 394680512112.38544 }, "end": { "local": "1982-07-04T21:39:37-05:00", "utc": "1982-07-05T02:39:37Z", "ms": 394684777036.1443 } }, "covered_min": 0, "window_min": 71, "qualifies": false }, { "local_date": "1982-07-05", "window": { "start": { "local": "1982-07-05T20:28:16-05:00", "utc": "1982-07-06T01:28:16Z", "ms": 394766896375.2261 }, "end": { "local": "1982-07-05T21:39:28-05:00", "utc": "1982-07-06T02:39:28Z", "ms": 394771168322.2023 } }, "covered_min": 71, "window_min": 71, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:00 on Sun 4 Jul to 02:32 on Tue 6 Jul.", "fact": "1982-07-05T04:59:45Z → 1982-07-06T07:31:36Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:29–21:40 on the 4th, 20:28–21:39 on the 5th.", "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 71 minutes on the 4th and 71 of 71 on the 5th.", "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 8408 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Chicago, 1982: Monday 5 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": "1982-07-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-05", "confidence": "determinate" } ], "quote": "In Chicago, Śiva Śayanotsava 1982 falls on Monday 5 July. Pūrṇimā runs from 00:00 on Sun 4 Jul to 02:32 on Tue 6 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28489, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1982-07-07T04:55:32-05:00", "utc": "1982-07-07T09:55:32Z", "ms": 394883731757.0563 }, "end": { "local": "1982-07-08T07:05:16-05:00", "utc": "1982-07-08T12:05:16Z", "ms": 394977915686.30096 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1982-07-07T04:55:32-05:00", "utc": "1982-07-07T09:55:32Z", "ms": 394883731757.0563 }, "end": { "local": "1982-07-08T07:05:16-05:00", "utc": "1982-07-08T12:05:16Z", "ms": 394977915686.30096 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-07-06", "window": { "start": { "local": "1982-07-06T21:00:43-05:00", "utc": "1982-07-07T02:00:43Z", "ms": 394855242862.42017 }, "end": { "local": "1982-07-06T21:00:43-05:00", "utc": "1982-07-07T02:00:43Z", "ms": 394855242862.42017 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-07-07", "window": { "start": { "local": "1982-07-07T21:42:39-05:00", "utc": "1982-07-08T02:42:39Z", "ms": 394944158900.22906 }, "end": { "local": "1982-07-07T21:42:39-05:00", "utc": "1982-07-08T02:42:39Z", "ms": 394944158900.22906 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 04:56 on Wed 7 Jul to 07:05 on Thu 8 Jul.", "fact": "1982-07-07T09:55:32Z → 1982-07-08T12:05:16Z" }, { "step": "kaala", "text": "Moonrise is at 21:01 on the 6th and 21:43 on the 7th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 6th and is on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28489 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Chicago, 1982: Wednesday 7 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ashunya-shayana-vrata-ashadha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 2 Asunya sayana vrata (candrodaya vyapini; purvahna vyapini and purvaviddha in Bengal)." } ], "not_evaluated": "In Bengal the row reads pūrvāhṇa and pūrvaviddha; that reading is not applied.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-07-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-07", "confidence": "determinate" } ], "quote": "In Chicago, Aśūnya Śayana Vrata (Āṣāḍha) 1982 falls on Wednesday 7 July. Dvitīyā runs from 04:56 on Wed 7 Jul to 07:05 on Thu 8 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/sankashta-chaturthi?on=1982-07-09", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38122, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-07-09T08:54:53-05:00", "utc": "1982-07-09T13:54:53Z", "ms": 395070892978.2115 }, "end": { "local": "1982-07-10T10:18:51-05:00", "utc": "1982-07-10T15:18:51Z", "ms": 395162330535.69464 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1982-07-09T08:54:53-05:00", "utc": "1982-07-09T13:54:53Z", "ms": 395070892978.2115 }, "end": { "local": "1982-07-10T10:18:51-05:00", "utc": "1982-07-10T15:18:51Z", "ms": 395162330535.69464 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-07-08", "window": { "start": { "local": "1982-07-08T22:19:31-05:00", "utc": "1982-07-09T03:19:31Z", "ms": 395032770803.7616 }, "end": { "local": "1982-07-08T22:19:31-05:00", "utc": "1982-07-09T03:19:31Z", "ms": 395032770803.7616 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-07-09", "window": { "start": { "local": "1982-07-09T22:52:07-05:00", "utc": "1982-07-10T03:52:07Z", "ms": 395121126642.87946 }, "end": { "local": "1982-07-09T22:52:07-05:00", "utc": "1982-07-10T03:52:07Z", "ms": 395121126642.87946 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:55 on Fri 9 Jul to 10:19 on Sat 10 Jul.", "fact": "1982-07-09T13:54:53Z → 1982-07-10T15:18:51Z" }, { "step": "kaala", "text": "Moonrise is at 22:20 on the 8th and 22:52 on the 9th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 8th and is on the 9th.", "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 38122 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 1982: Friday 9 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": "1982-07-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-09", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 1982 falls on Friday 9 July. Caturthī runs from 08:55 on Fri 9 Jul to 10:19 on Sat 10 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/sankashta-chaturthi?on=1982-07-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/ekadashi?on=1982-07-16", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3254, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-07-16T06:23:49-05:00", "utc": "1982-07-16T11:23:49Z", "ms": 395666629423.6834 }, "end": { "local": "1982-07-17T03:40:35-05:00", "utc": "1982-07-17T08:40:35Z", "ms": 395743235495.30084 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1982-07-16T06:23:49-05:00", "utc": "1982-07-16T11:23:49Z", "ms": 395666629423.6834 }, "end": { "local": "1982-07-17T03:40:35-05:00", "utc": "1982-07-17T08:40:35Z", "ms": 395743235495.30084 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-07-16", "window": { "start": { "local": "1982-07-16T05:29:36-05:00", "utc": "1982-07-16T10:29:36Z", "ms": 395663375666.3296 }, "end": { "local": "1982-07-16T05:29:36-05:00", "utc": "1982-07-16T10:29:36Z", "ms": 395663375666.3296 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-07-17", "window": { "start": { "local": "1982-07-17T05:30:26-05:00", "utc": "1982-07-17T10:30:26Z", "ms": 395749825760.0655 }, "end": { "local": "1982-07-17T05:30:26-05:00", "utc": "1982-07-17T10:30:26Z", "ms": 395749825760.0655 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:24 on Fri 16 Jul to 03:41 on Sat 17 Jul.", "fact": "1982-07-16T11:23:49Z → 1982-07-17T08:40:35Z" }, { "step": "kaala", "text": "Sunrise is at 05:30 on the 16th and 05:30 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 not on the 17th.", "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 3254 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Chicago, 1982: Friday 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": "1982-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-16", "confidence": "determinate" } ], "quote": "In Chicago, Kāmikā Ekādaśī 1982 falls on Friday 16 July. Ekādaśī runs from 06:24 on Fri 16 Jul to 03:41 on Sat 17 Jul, and is current at sunrise on neither day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-07-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-07-18", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1702, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-07-18T00:32:27-05:00", "utc": "1982-07-18T05:32:27Z", "ms": 395818346681.91534 }, "end": { "local": "1982-07-18T21:06:45-05:00", "utc": "1982-07-19T02:06:45Z", "ms": 395892404961.205 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1982-07-18T00:32:27-05:00", "utc": "1982-07-18T05:32:27Z", "ms": 395818346681.91534 }, "end": { "local": "1982-07-18T21:06:45-05:00", "utc": "1982-07-19T02:06:45Z", "ms": 395892404961.205 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-07-17", "window": { "start": { "local": "1982-07-17T20:22:26-05:00", "utc": "1982-07-18T01:22:26Z", "ms": 395803346332.9045 }, "end": { "local": "1982-07-17T21:35:37-05:00", "utc": "1982-07-18T02:35:37Z", "ms": 395807737060.6436 } }, "covered_min": 0, "window_min": 73, "qualifies": false }, { "local_date": "1982-07-18", "window": { "start": { "local": "1982-07-18T20:21:44-05:00", "utc": "1982-07-19T01:21:44Z", "ms": 395889704168.1966 }, "end": { "local": "1982-07-18T21:35:07-05:00", "utc": "1982-07-19T02:35:07Z", "ms": 395894107440.511 } }, "covered_min": 45, "window_min": 73, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:32 on Sun 18 Jul to 21:07 on Sun 18 Jul.", "fact": "1982-07-18T05:32:27Z → 1982-07-19T02:06:45Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:22–21:36 on the 17th, 20:22–21:35 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 73 minutes on the 17th and 45 of 73 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 1702 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 1982: Sunday 18 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": "1982-07-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-18", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 1982 falls on Sunday 18 July. Trayodaśī runs from 00:32 on Sun 18 Jul to 21:07 on Sun 18 Jul and covers 45 of 73 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-07-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/shivaratri?on=1982-07-18", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12371, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-07-18T21:06:45-05:00", "utc": "1982-07-19T02:06:45Z", "ms": 395892404961.205 }, "end": { "local": "1982-07-19T17:31:49-05:00", "utc": "1982-07-19T22:31:49Z", "ms": 395965909116.3908 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1982-07-18T21:06:45-05:00", "utc": "1982-07-19T02:06:45Z", "ms": 395892404961.205 }, "end": { "local": "1982-07-19T17:31:49-05:00", "utc": "1982-07-19T22:31:49Z", "ms": 395965909116.3908 } }, "kaala": "nishita", "days": [ { "local_date": "1982-07-18", "window": { "start": { "local": "1982-07-19T00:32:56-05:00", "utc": "1982-07-19T05:32:56Z", "ms": 395904776439.3755 }, "end": { "local": "1982-07-19T01:20:56-05:00", "utc": "1982-07-19T06:20:56Z", "ms": 395907656439.3755 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-07-19", "window": { "start": { "local": "1982-07-20T00:33:01-05:00", "utc": "1982-07-20T05:33:01Z", "ms": 395991180776.7023 }, "end": { "local": "1982-07-20T01:21:01-05:00", "utc": "1982-07-20T06:21:01Z", "ms": 395994060776.7023 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:07 on Sun 18 Jul to 17:32 on Mon 19 Jul.", "fact": "1982-07-19T02:06:45Z → 1982-07-19T22:31:49Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:33–01:21 on the 18th, 00:33–01:21 on the 19th.", "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 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12371 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 1982: Sunday 18 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": "1982-07-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-18", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 1982 falls on Sunday 18 July. Caturdaśī runs from 21:07 on Sun 18 Jul to 17:32 on Mon 19 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/shivaratri?on=1982-07-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18589, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1982-07-22T07:22:54-05:00", "utc": "1982-07-22T12:22:54Z", "ms": 396188574078.2494 }, "end": { "local": "1982-07-23T04:42:54-05:00", "utc": "1982-07-23T09:42:54Z", "ms": 396265374001.48816 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1982-07-22T07:22:54-05:00", "utc": "1982-07-22T12:22:54Z", "ms": 396188574078.2494 }, "end": { "local": "1982-07-23T04:42:54-05:00", "utc": "1982-07-23T09:42:54Z", "ms": 396265374001.48816 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-07-22", "window": { "start": { "local": "1982-07-22T12:32:43-05:00", "utc": "1982-07-22T17:32:43Z", "ms": 396207162900.89453 }, "end": { "local": "1982-07-22T13:20:43-05:00", "utc": "1982-07-22T18:20:43Z", "ms": 396210042900.89453 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-07-23", "window": { "start": { "local": "1982-07-23T12:32:45-05:00", "utc": "1982-07-23T17:32:45Z", "ms": 396293564605.05945 }, "end": { "local": "1982-07-23T13:20:45-05:00", "utc": "1982-07-23T18:20:45Z", "ms": 396296444605.05945 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 07:23 on Thu 22 Jul to 04:43 on Fri 23 Jul.", "fact": "1982-07-22T12:22:54Z → 1982-07-23T09:42:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:33–13:21 on the 22nd, 12:33–13:21 on the 23rd.", "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 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18589 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Chicago, 1982: Thursday 22 July.", "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": "1982-07-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-22", "confidence": "determinate" } ], "quote": "In Chicago, Madhusravā Tṛtīyā (Hariyali Teej) 1982 falls on Thursday 22 July. Tṛtīyā runs from 07:23 on Thu 22 Jul to 04:43 on Fri 23 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/vinayaka-chaturthi?on=1982-07-23", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28191, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-07-23T04:42:54-05:00", "utc": "1982-07-23T09:42:54Z", "ms": 396265374001.48816 }, "end": { "local": "1982-07-24T02:38:47-05:00", "utc": "1982-07-24T07:38:47Z", "ms": 396344326918.72076 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1982-07-23T04:42:54-05:00", "utc": "1982-07-23T09:42:54Z", "ms": 396265374001.48816 }, "end": { "local": "1982-07-24T02:38:47-05:00", "utc": "1982-07-24T07:38:47Z", "ms": 396344326918.72076 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-07-23", "window": { "start": { "local": "1982-07-23T12:32:45-05:00", "utc": "1982-07-23T17:32:45Z", "ms": 396293564605.05945 }, "end": { "local": "1982-07-23T13:20:45-05:00", "utc": "1982-07-23T18:20:45Z", "ms": 396296444605.05945 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-07-24", "window": { "start": { "local": "1982-07-24T12:32:46-05:00", "utc": "1982-07-24T17:32:46Z", "ms": 396379965724.61914 }, "end": { "local": "1982-07-24T13:20:46-05:00", "utc": "1982-07-24T18:20:46Z", "ms": 396382845724.61914 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:43 on Fri 23 Jul to 02:39 on Sat 24 Jul.", "fact": "1982-07-23T09:42:54Z → 1982-07-24T07:38:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:33–13:21 on the 23rd, 12:33–13:21 on the 24th.", "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 23rd and 0 of 48 on the 24th.", "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 28191 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 1982: Friday 23 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": "1982-07-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-23", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 1982 falls on Friday 23 July. Caturthī runs from 04:43 on Fri 23 Jul to 02:39 on Sat 24 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/vinayaka-chaturthi?on=1982-07-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35639, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1982-07-24T02:38:47-05:00", "utc": "1982-07-24T07:38:47Z", "ms": 396344326918.72076 }, "end": { "local": "1982-07-25T01:17:19-05:00", "utc": "1982-07-25T06:17:19Z", "ms": 396425839047.8762 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1982-07-24T02:38:47-05:00", "utc": "1982-07-24T07:38:47Z", "ms": 396344326918.72076 }, "end": { "local": "1982-07-25T01:17:19-05:00", "utc": "1982-07-25T06:17:19Z", "ms": 396425839047.8762 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-07-24", "window": { "start": { "local": "1982-07-24T12:32:46-05:00", "utc": "1982-07-24T17:32:46Z", "ms": 396379965724.61914 }, "end": { "local": "1982-07-24T13:20:46-05:00", "utc": "1982-07-24T18:20:46Z", "ms": 396382845724.61914 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-07-25", "window": { "start": { "local": "1982-07-25T12:32:46-05:00", "utc": "1982-07-25T17:32:46Z", "ms": 396466366251.0834 }, "end": { "local": "1982-07-25T13:20:46-05:00", "utc": "1982-07-25T18:20:46Z", "ms": 396469246251.0834 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 02:39 on Sat 24 Jul to 01:17 on Sun 25 Jul.", "fact": "1982-07-24T07:38:47Z → 1982-07-25T06:17:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:33–13:21 on the 24th, 12:33–13:21 on the 25th.", "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 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35639 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Chicago, 1982: Saturday 24 July.", "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": "1982-07-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-24", "confidence": "determinate" } ], "quote": "In Chicago, Nāga Pañcamī 1982 falls on Saturday 24 July. Pañcamī runs from 02:39 on Sat 24 Jul to 01:17 on Sun 25 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-07-31", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-31", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 267, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-07-30T05:46:52-05:00", "utc": "1982-07-30T10:46:52Z", "ms": 396874011908.60095 }, "end": { "local": "1982-07-31T08:15:15-05:00", "utc": "1982-07-31T13:15:15Z", "ms": 396969315300.44806 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1982-07-30T05:46:52-05:00", "utc": "1982-07-30T10:46:52Z", "ms": 396874011908.60095 }, "end": { "local": "1982-07-31T08:15:15-05:00", "utc": "1982-07-31T13:15:15Z", "ms": 396969315300.44806 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-07-30", "window": { "start": { "local": "1982-07-30T05:42:25-05:00", "utc": "1982-07-30T10:42:25Z", "ms": 396873745238.8881 }, "end": { "local": "1982-07-30T05:42:25-05:00", "utc": "1982-07-30T10:42:25Z", "ms": 396873745238.8881 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-07-31", "window": { "start": { "local": "1982-07-31T05:43:24-05:00", "utc": "1982-07-31T10:43:24Z", "ms": 396960204360.13794 }, "end": { "local": "1982-07-31T05:43:24-05:00", "utc": "1982-07-31T10:43:24Z", "ms": 396960204360.13794 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:47 on Fri 30 Jul to 08:15 on Sat 31 Jul.", "fact": "1982-07-30T10:46:52Z → 1982-07-31T13:15:15Z" }, { "step": "kaala", "text": "Sunrise is at 05:42 on the 30th and 05:43 on the 31st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 30th and is on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 267 s < 300 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Chicago, 1982: Saturday 31 July.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-07-31", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-31", "confidence": "boundary" } ], "quote": "In Chicago, Putradā Ekādaśī 1982 falls on Saturday 31 July. Ekādaśī runs from 05:47 on Fri 30 Jul to 08:15 on Sat 31 Jul and is current at sunrise that day. It is 4 min 27 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-07-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-07-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6151, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1982-07-31T08:15:15-05:00", "utc": "1982-07-31T13:15:15Z", "ms": 396969315300.44806 }, "end": { "local": "1982-08-01T10:50:02-05:00", "utc": "1982-08-01T15:50:02Z", "ms": 397065001821.5237 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1982-07-31T08:15:15-05:00", "utc": "1982-07-31T13:15:15Z", "ms": 396969315300.44806 }, "end": { "local": "1982-08-01T10:50:02-05:00", "utc": "1982-08-01T15:50:02Z", "ms": 397065001821.5237 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-07-31", "window": { "start": { "local": "1982-07-31T12:32:37-05:00", "utc": "1982-07-31T17:32:37Z", "ms": 396984756701.7562 }, "end": { "local": "1982-07-31T13:20:37-05:00", "utc": "1982-07-31T18:20:37Z", "ms": 396987636701.7562 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-08-01", "window": { "start": { "local": "1982-08-01T12:32:33-05:00", "utc": "1982-08-01T17:32:33Z", "ms": 397071152979.82666 }, "end": { "local": "1982-08-01T13:20:33-05:00", "utc": "1982-08-01T18:20:33Z", "ms": 397074032979.82666 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 08:15 on Sat 31 Jul to 10:50 on Sun 1 Aug.", "fact": "1982-07-31T13:15:15Z → 1982-08-01T15:50:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:33–13:21 on the 31st, 12:33–13:21 on the 1st.", "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 31st and 0 of 48 on the 1st.", "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 6151 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Chicago, 1982: Saturday 31 July.", "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": "1982-07-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-07-31", "confidence": "determinate" } ], "quote": "In Chicago, Dāmodara Dvādaśī 1982 falls on Saturday 31 July. Dvādaśī runs from 08:15 on Sat 31 Jul to 10:50 on Sun 1 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/pradosha-vrata?on=1982-08-01", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24442, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-08-01T10:50:02-05:00", "utc": "1982-08-01T15:50:02Z", "ms": 397065001821.5237 }, "end": { "local": "1982-08-02T13:20:12-05:00", "utc": "1982-08-02T18:20:12Z", "ms": 397160411941.62445 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1982-08-01T10:50:02-05:00", "utc": "1982-08-01T15:50:02Z", "ms": 397065001821.5237 }, "end": { "local": "1982-08-02T13:20:12-05:00", "utc": "1982-08-02T18:20:12Z", "ms": 397160411941.62445 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-08-01", "window": { "start": { "local": "1982-08-01T20:08:42-05:00", "utc": "1982-08-02T01:08:42Z", "ms": 397098522115.4207 }, "end": { "local": "1982-08-01T21:25:36-05:00", "utc": "1982-08-02T02:25:36Z", "ms": 397103135655.0375 } }, "covered_min": 77, "window_min": 77, "qualifies": true }, { "local_date": "1982-08-02", "window": { "start": { "local": "1982-08-02T20:07:34-05:00", "utc": "1982-08-03T01:07:34Z", "ms": 397184853643.02515 }, "end": { "local": "1982-08-02T21:24:44-05:00", "utc": "1982-08-03T02:24:44Z", "ms": 397189484329.0247 } }, "covered_min": 0, "window_min": 77, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:50 on Sun 1 Aug to 13:20 on Mon 2 Aug.", "fact": "1982-08-01T15:50:02Z → 1982-08-02T18:20:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:09–21:26 on the 1st, 20:08–21:25 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 77 of 77 minutes on the 1st and 0 of 77 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 24442 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 1982: Sunday 1 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": "1982-08-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-01", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 1982 falls on Sunday 1 August. Trayodaśī runs from 10:50 on Sun 1 Aug to 13:20 on Mon 2 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-08-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-04", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 4158, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-08-03T15:36:53-05:00", "utc": "1982-08-03T20:36:53Z", "ms": 397255013419.7544 }, "end": { "local": "1982-08-04T17:33:44-05:00", "utc": "1982-08-04T22:33:44Z", "ms": 397348424204.61633 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "1982-08-04T04:38:06-05:00", "utc": "1982-08-04T09:38:06Z", "ms": 397301885780.6008 }, "end": { "local": "1982-08-04T17:33:44-05:00", "utc": "1982-08-04T22:33:44Z", "ms": 397348424204.61633 } }, "kaala": "day", "days": [ { "local_date": "1982-08-03", "window": { "start": { "local": "1982-08-03T05:46:24-05:00", "utc": "1982-08-03T10:46:24Z", "ms": 397219583788.0221 }, "end": { "local": "1982-08-04T05:47:24-05:00", "utc": "1982-08-04T10:47:24Z", "ms": 397306044195.42737 } }, "covered_min": 69, "window_min": 1441, "qualifies": true }, { "local_date": "1982-08-04", "window": { "start": { "local": "1982-08-04T05:47:24-05:00", "utc": "1982-08-04T10:47:24Z", "ms": 397306044195.42737 }, "end": { "local": "1982-08-05T05:48:25-05:00", "utc": "1982-08-05T10:48:25Z", "ms": 397392504861.22925 } }, "covered_min": 706, "window_min": 1441, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:37 on Tue 3 Aug to 17:34 on Wed 4 Aug. Its second half begins at 04:38 on Wed 4 Aug.", "fact": "1982-08-03T20:36:53Z → 1982-08-04T22:33:44Z · second half from 1982-08-04T09:38:06Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:46 on the 3rd, and from 05:47 on the 4th.", "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 69 of 1441 minutes on the 3rd and 706 of 1441 on the 4th.", "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 4158 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Chicago, 1982: Wednesday 4 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": "1982-08-04", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-04", "confidence": "boundary" } ], "quote": "In Chicago, Rakṣā Bandhana (Rakhi) 1982 falls on Wednesday 4 August. The second half of Pūrṇimā runs from 04:38 on Wed 4 Aug to 17:34 on Wed 4 Aug and falls on two days: 706 minutes of it on the 4th, 69 on the 3rd; 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/chicago/festivals/1982/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": "/chicago/festivals/1982/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8190, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-08-03T15:36:53-05:00", "utc": "1982-08-03T20:36:53Z", "ms": 397255013419.7544 }, "end": { "local": "1982-08-04T17:33:44-05:00", "utc": "1982-08-04T22:33:44Z", "ms": 397348424204.61633 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1982-08-03T15:36:53-05:00", "utc": "1982-08-03T20:36:53Z", "ms": 397255013419.7544 }, "end": { "local": "1982-08-04T17:33:44-05:00", "utc": "1982-08-04T22:33:44Z", "ms": 397348424204.61633 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-08-03", "window": { "start": { "local": "1982-08-03T12:32:24-05:00", "utc": "1982-08-03T17:32:24Z", "ms": 397243943724.3008 }, "end": { "local": "1982-08-03T13:20:24-05:00", "utc": "1982-08-03T18:20:24Z", "ms": 397246823724.3008 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-08-04", "window": { "start": { "local": "1982-08-04T12:32:18-05:00", "utc": "1982-08-04T17:32:18Z", "ms": 397330338199.0698 }, "end": { "local": "1982-08-04T13:20:18-05:00", "utc": "1982-08-04T18:20:18Z", "ms": 397333218199.0698 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:37 on Tue 3 Aug to 17:34 on Wed 4 Aug.", "fact": "1982-08-03T20:36:53Z → 1982-08-04T22:33:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:32–13:20 on the 3rd, 12:32–13:20 on the 4th.", "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 3rd and 48 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8190 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Chicago, 1982: Wednesday 4 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": "1982-08-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-04", "confidence": "determinate" } ], "quote": "In Chicago, Ṛṣi Tarpaṇa 1982 falls on Wednesday 4 August. Pūrṇimā runs from 15:37 on Tue 3 Aug to 17:34 on Wed 4 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4288, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1982-08-05T19:06:42-05:00", "utc": "1982-08-06T00:06:42Z", "ms": 397440401576.109 }, "end": { "local": "1982-08-06T20:13:31-05:00", "utc": "1982-08-07T01:13:31Z", "ms": 397530810845.8822 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-05T19:06:42-05:00", "utc": "1982-08-06T00:06:42Z", "ms": 397440401576.109 }, "end": { "local": "1982-08-06T20:13:31-05:00", "utc": "1982-08-07T01:13:31Z", "ms": 397530810845.8822 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-08-05", "window": { "start": { "local": "1982-08-05T20:54:29-05:00", "utc": "1982-08-06T01:54:29Z", "ms": 397446869188.0702 }, "end": { "local": "1982-08-05T20:54:29-05:00", "utc": "1982-08-06T01:54:29Z", "ms": 397446869188.0702 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-08-06", "window": { "start": { "local": "1982-08-06T21:24:58-05:00", "utc": "1982-08-07T02:24:58Z", "ms": 397535098370.2758 }, "end": { "local": "1982-08-06T21:24:58-05:00", "utc": "1982-08-07T02:24:58Z", "ms": 397535098370.2758 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 19:07 on Thu 5 Aug to 20:14 on Fri 6 Aug.", "fact": "1982-08-06T00:06:42Z → 1982-08-07T01:13:31Z" }, { "step": "kaala", "text": "Moonrise is at 20:54 on the 5th and 21:25 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 4288 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Chicago, 1982: Thursday 5 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": "1982-08-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-05", "confidence": "determinate" } ], "quote": "In Chicago, Aśūnya Śayana Vrata 1982 falls on Thursday 5 August. Dvitīyā runs from 19:07 on Thu 5 Aug to 20:14 on Fri 6 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24805, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1982-08-06T20:13:31-05:00", "utc": "1982-08-07T01:13:31Z", "ms": 397530810845.8822 }, "end": { "local": "1982-08-07T20:53:08-05:00", "utc": "1982-08-08T01:53:08Z", "ms": 397619587834.0677 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-06T20:13:31-05:00", "utc": "1982-08-07T01:13:31Z", "ms": 397530810845.8822 }, "end": { "local": "1982-08-07T20:53:08-05:00", "utc": "1982-08-08T01:53:08Z", "ms": 397619587834.0677 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-08-06", "window": { "start": { "local": "1982-08-06T12:32:05-05:00", "utc": "1982-08-06T17:32:05Z", "ms": 397503125381.6571 }, "end": { "local": "1982-08-06T13:20:05-05:00", "utc": "1982-08-06T18:20:05Z", "ms": 397506005381.6571 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-08-07", "window": { "start": { "local": "1982-08-07T12:31:58-05:00", "utc": "1982-08-07T17:31:58Z", "ms": 397589518103.12067 }, "end": { "local": "1982-08-07T13:19:58-05:00", "utc": "1982-08-07T18:19:58Z", "ms": 397592398103.12067 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 20:14 on Fri 6 Aug to 20:53 on Sat 7 Aug.", "fact": "1982-08-07T01:13:31Z → 1982-08-08T01:53:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:32–13:20 on the 6th, 12:32–13:20 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 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: paraviddha → only-day · margin 24805 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Chicago, 1982: Saturday 7 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": "1982-08-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-07", "confidence": "determinate" } ], "quote": "In Chicago, Kajjalī Tṛtīyā (Kajari Teej) 1982 falls on Saturday 7 August. Tṛtīyā runs from 20:14 on Fri 6 Aug to 20:53 on Sat 7 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/sankashta-chaturthi?on=1982-08-07", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3591, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-08-07T20:53:08-05:00", "utc": "1982-08-08T01:53:08Z", "ms": 397619587834.0677 }, "end": { "local": "1982-08-08T21:05:06-05:00", "utc": "1982-08-09T02:05:06Z", "ms": 397706706104.1499 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-07T20:53:08-05:00", "utc": "1982-08-08T01:53:08Z", "ms": 397619587834.0677 }, "end": { "local": "1982-08-08T21:05:06-05:00", "utc": "1982-08-09T02:05:06Z", "ms": 397706706104.1499 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-08-07", "window": { "start": { "local": "1982-08-07T21:52:59-05:00", "utc": "1982-08-08T02:52:59Z", "ms": 397623178745.0055 }, "end": { "local": "1982-08-07T21:52:59-05:00", "utc": "1982-08-08T02:52:59Z", "ms": 397623178745.0055 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-08-08", "window": { "start": { "local": "1982-08-08T22:19:41-05:00", "utc": "1982-08-09T03:19:41Z", "ms": 397711181187.79425 }, "end": { "local": "1982-08-08T22:19:41-05:00", "utc": "1982-08-09T03:19:41Z", "ms": 397711181187.79425 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:53 on Sat 7 Aug to 21:05 on Sun 8 Aug.", "fact": "1982-08-08T01:53:08Z → 1982-08-09T02:05:06Z" }, { "step": "kaala", "text": "Moonrise is at 21:53 on the 7th and 22:20 on the 8th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 7th and is not on the 8th.", "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 3591 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 1982: Saturday 7 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": "1982-08-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-07", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 1982 falls on Saturday 7 August. Caturthī runs from 20:53 on Sat 7 Aug to 21:05 on Sun 8 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/sankashta-chaturthi?on=1982-08-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3099, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-08-07T20:53:08-05:00", "utc": "1982-08-08T01:53:08Z", "ms": 397619587834.0677 }, "end": { "local": "1982-08-08T21:05:06-05:00", "utc": "1982-08-09T02:05:06Z", "ms": 397706706104.1499 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-07T20:53:08-05:00", "utc": "1982-08-08T01:53:08Z", "ms": 397619587834.0677 }, "end": { "local": "1982-08-08T21:05:06-05:00", "utc": "1982-08-09T02:05:06Z", "ms": 397706706104.1499 } }, "kaala": "sayahna", "days": [ { "local_date": "1982-08-07", "window": { "start": { "local": "1982-08-07T17:11:17-05:00", "utc": "1982-08-07T22:11:17Z", "ms": 397606276835.7598 }, "end": { "local": "1982-08-07T20:01:29-05:00", "utc": "1982-08-08T01:01:29Z", "ms": 397616489324.1859 } }, "covered_min": 0, "window_min": 170, "qualifies": false }, { "local_date": "1982-08-08", "window": { "start": { "local": "1982-08-08T17:10:27-05:00", "utc": "1982-08-08T22:10:27Z", "ms": 397692627489.17944 }, "end": { "local": "1982-08-08T20:00:12-05:00", "utc": "1982-08-09T01:00:12Z", "ms": 397702812312.01495 } }, "covered_min": 170, "window_min": 170, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:53 on Sat 7 Aug to 21:05 on Sun 8 Aug.", "fact": "1982-08-08T01:53:08Z → 1982-08-09T02:05:06Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 17:11–20:01 on the 7th, 17:10–20:00 on the 8th.", "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 170 minutes on the 7th and 170 of 170 on the 8th.", "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 3099 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Chicago, 1982: Sunday 8 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": "1982-08-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-08", "confidence": "determinate" } ], "quote": "In Chicago, Bahulā Caturthī 1982 falls on Sunday 8 August. Caturthī runs from 20:53 on Sat 7 Aug to 21:05 on Sun 8 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24362, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1982-08-09T20:49:16-05:00", "utc": "1982-08-10T01:49:16Z", "ms": 397792155552.83545 }, "end": { "local": "1982-08-10T20:05:35-05:00", "utc": "1982-08-11T01:05:35Z", "ms": 397875934843.64996 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-09T20:49:16-05:00", "utc": "1982-08-10T01:49:16Z", "ms": 397792155552.83545 }, "end": { "local": "1982-08-10T20:05:35-05:00", "utc": "1982-08-11T01:05:35Z", "ms": 397875934843.64996 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-08-09", "window": { "start": { "local": "1982-08-09T12:31:42-05:00", "utc": "1982-08-09T17:31:42Z", "ms": 397762301845.3989 }, "end": { "local": "1982-08-09T13:19:42-05:00", "utc": "1982-08-09T18:19:42Z", "ms": 397765181845.3989 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-08-10", "window": { "start": { "local": "1982-08-10T12:31:33-05:00", "utc": "1982-08-10T17:31:33Z", "ms": 397848692883.1936 }, "end": { "local": "1982-08-10T13:19:33-05:00", "utc": "1982-08-10T18:19:33Z", "ms": 397851572883.1936 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 20:49 on Mon 9 Aug to 20:06 on Tue 10 Aug.", "fact": "1982-08-10T01:49:16Z → 1982-08-11T01:05:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:32–13:20 on the 9th, 12:32–13:20 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24362 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Chicago, 1982: Tuesday 10 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": "1982-08-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-10", "confidence": "determinate" } ], "quote": "In Chicago, Hala Ṣaṣṭhī 1982 falls on Tuesday 10 August. Ṣaṣṭhī runs from 20:49 on Mon 9 Aug to 20:06 on Tue 10 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20258, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1982-08-11T18:54:17-05:00", "utc": "1982-08-11T23:54:17Z", "ms": 397958056679.8558 }, "end": { "local": "1982-08-12T17:16:02-05:00", "utc": "1982-08-12T22:16:02Z", "ms": 398038562197.6023 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-11T18:54:17-05:00", "utc": "1982-08-11T23:54:17Z", "ms": 397958056679.8558 }, "end": { "local": "1982-08-12T17:16:02-05:00", "utc": "1982-08-12T22:16:02Z", "ms": 398038562197.6023 } }, "kaala": "nishita", "days": [ { "local_date": "1982-08-11", "window": { "start": { "local": "1982-08-12T00:31:54-05:00", "utc": "1982-08-12T05:31:54Z", "ms": 397978314344.60535 }, "end": { "local": "1982-08-12T01:19:54-05:00", "utc": "1982-08-12T06:19:54Z", "ms": 397981194344.60535 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-08-12", "window": { "start": { "local": "1982-08-13T00:31:44-05:00", "utc": "1982-08-13T05:31:44Z", "ms": 398064704360.584 }, "end": { "local": "1982-08-13T01:19:44-05:00", "utc": "1982-08-13T06:19:44Z", "ms": 398067584360.584 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 18:54 on Wed 11 Aug to 17:16 on Thu 12 Aug.", "fact": "1982-08-11T23:54:17Z → 1982-08-12T22:16:02Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:32–01:20 on the 11th, 00:32–01:20 on the 12th.", "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 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20258 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Chicago, 1982: Wednesday 11 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": "1982-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-11", "confidence": "determinate" } ], "quote": "In Chicago, Janmāṣṭamī 1982 falls on Wednesday 11 August. Aṣṭamī runs from 18:54 on Wed 11 Aug to 17:16 on Thu 12 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20093, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "1982-08-10T20:05:35-05:00", "utc": "1982-08-11T01:05:35Z", "ms": 397875934843.64996 }, "end": { "local": "1982-08-11T18:54:17-05:00", "utc": "1982-08-11T23:54:17Z", "ms": 397958056679.8558 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-10T20:05:35-05:00", "utc": "1982-08-11T01:05:35Z", "ms": 397875934843.64996 }, "end": { "local": "1982-08-11T18:54:17-05:00", "utc": "1982-08-11T23:54:17Z", "ms": 397958056679.8558 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-08-10", "window": { "start": { "local": "1982-08-10T12:31:33-05:00", "utc": "1982-08-10T17:31:33Z", "ms": 397848692883.1936 }, "end": { "local": "1982-08-10T13:19:33-05:00", "utc": "1982-08-10T18:19:33Z", "ms": 397851572883.1936 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-08-11", "window": { "start": { "local": "1982-08-11T12:31:23-05:00", "utc": "1982-08-11T17:31:23Z", "ms": 397935083377.1041 }, "end": { "local": "1982-08-11T13:19:23-05:00", "utc": "1982-08-11T18:19:23Z", "ms": 397937963377.1041 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 20:06 on Tue 10 Aug to 18:54 on Wed 11 Aug.", "fact": "1982-08-11T01:05:35Z → 1982-08-11T23:54:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:32–13:20 on the 10th, 12:31–13:19 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 20093 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Chicago, 1982: Wednesday 11 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": "1982-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-11", "confidence": "determinate" } ], "quote": "In Chicago, Śītalā Saptamī 1982 falls on Wednesday 11 August. Saptamī runs from 20:06 on Tue 10 Aug to 18:54 on Wed 11 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-08-15", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14467, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-08-14T12:45:39-05:00", "utc": "1982-08-14T17:45:39Z", "ms": 398195139053.5917 }, "end": { "local": "1982-08-15T09:59:48-05:00", "utc": "1982-08-15T14:59:48Z", "ms": 398271588086.92017 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-14T12:45:39-05:00", "utc": "1982-08-14T17:45:39Z", "ms": 398195139053.5917 }, "end": { "local": "1982-08-15T09:59:48-05:00", "utc": "1982-08-15T14:59:48Z", "ms": 398271588086.92017 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-08-14", "window": { "start": { "local": "1982-08-14T05:57:39-05:00", "utc": "1982-08-14T10:57:39Z", "ms": 398170659287.57385 }, "end": { "local": "1982-08-14T05:57:39-05:00", "utc": "1982-08-14T10:57:39Z", "ms": 398170659287.57385 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-08-15", "window": { "start": { "local": "1982-08-15T05:58:42-05:00", "utc": "1982-08-15T10:58:42Z", "ms": 398257121515.927 }, "end": { "local": "1982-08-15T05:58:42-05:00", "utc": "1982-08-15T10:58:42Z", "ms": 398257121515.927 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:46 on Sat 14 Aug to 10:00 on Sun 15 Aug.", "fact": "1982-08-14T17:45:39Z → 1982-08-15T14:59:48Z" }, { "step": "kaala", "text": "Sunrise is at 05:58 on the 14th and 05:59 on the 15th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 14th and is 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 14467 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Chicago, 1982: Sunday 15 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": "1982-08-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-15", "confidence": "determinate" } ], "quote": "In Chicago, Ajā Ekādaśī 1982 falls on Sunday 15 August. Ekādaśī runs from 12:46 on Sat 14 Aug to 10:00 on Sun 15 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-08-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-08-16", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24090, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-08-16T06:59:52-05:00", "utc": "1982-08-16T11:59:52Z", "ms": 398347192208.18695 }, "end": { "local": "1982-08-17T03:52:14-05:00", "utc": "1982-08-17T08:52:14Z", "ms": 398422334307.9384 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-16T06:59:52-05:00", "utc": "1982-08-16T11:59:52Z", "ms": 398347192208.18695 }, "end": { "local": "1982-08-17T03:52:14-05:00", "utc": "1982-08-17T08:52:14Z", "ms": 398422334307.9384 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-08-15", "window": { "start": { "local": "1982-08-15T19:50:39-05:00", "utc": "1982-08-16T00:50:39Z", "ms": 398307038649.01294 }, "end": { "local": "1982-08-15T21:11:51-05:00", "utc": "1982-08-16T02:11:51Z", "ms": 398311911336.81134 } }, "covered_min": 0, "window_min": 81, "qualifies": false }, { "local_date": "1982-08-16", "window": { "start": { "local": "1982-08-16T19:49:12-05:00", "utc": "1982-08-17T00:49:12Z", "ms": 398393352149.5367 }, "end": { "local": "1982-08-16T21:10:45-05:00", "utc": "1982-08-17T02:10:45Z", "ms": 398398244682.1729 } }, "covered_min": 82, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:00 on Mon 16 Aug to 03:52 on Tue 17 Aug.", "fact": "1982-08-16T11:59:52Z → 1982-08-17T08:52:14Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:51–21:12 on the 15th, 19:49–21:11 on the 16th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 81 minutes on the 15th and 82 of 82 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 24090 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 1982: Monday 16 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": "1982-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-16", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 1982 falls on Monday 16 August. Trayodaśī runs from 07:00 on Mon 16 Aug to 03:52 on Tue 17 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-08-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12889, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-08-17T03:52:14-05:00", "utc": "1982-08-17T08:52:14Z", "ms": 398422334307.9384 }, "end": { "local": "1982-08-18T00:44:26-05:00", "utc": "1982-08-18T05:44:26Z", "ms": 398497465653.5681 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-17T03:52:14-05:00", "utc": "1982-08-17T08:52:14Z", "ms": 398422334307.9384 }, "end": { "local": "1982-08-18T00:44:26-05:00", "utc": "1982-08-18T05:44:26Z", "ms": 398497465653.5681 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-08-16", "window": { "start": { "local": "1982-08-16T19:49:12-05:00", "utc": "1982-08-17T00:49:12Z", "ms": 398393352149.5367 }, "end": { "local": "1982-08-16T21:10:45-05:00", "utc": "1982-08-17T02:10:45Z", "ms": 398398244682.1729 } }, "covered_min": 0, "window_min": 82, "qualifies": false }, { "local_date": "1982-08-17", "window": { "start": { "local": "1982-08-17T19:47:45-05:00", "utc": "1982-08-18T00:47:45Z", "ms": 398479664605.3105 }, "end": { "local": "1982-08-17T21:09:37-05:00", "utc": "1982-08-18T02:09:37Z", "ms": 398484577125.748 } }, "covered_min": 82, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 03:52 on Tue 17 Aug to 00:44 on Wed 18 Aug.", "fact": "1982-08-17T08:52:14Z → 1982-08-18T05:44:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:49–21:11 on the 16th, 19:48–21:10 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 0 of 82 minutes on the 16th and 82 of 82 on the 17th.", "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 12889 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Chicago, 1982: Tuesday 17 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": "1982-08-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-17", "confidence": "determinate" } ], "quote": "In Chicago, Aghora Caturdaśī 1982 falls on Tuesday 17 August. Caturdaśī runs from 03:52 on Tue 17 Aug to 00:44 on Wed 18 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/shivaratri?on=1982-08-17", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 819, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-08-17T03:52:14-05:00", "utc": "1982-08-17T08:52:14Z", "ms": 398422334307.9384 }, "end": { "local": "1982-08-18T00:44:26-05:00", "utc": "1982-08-18T05:44:26Z", "ms": 398497465653.5681 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-17T03:52:14-05:00", "utc": "1982-08-17T08:52:14Z", "ms": 398422334307.9384 }, "end": { "local": "1982-08-18T00:44:26-05:00", "utc": "1982-08-18T05:44:26Z", "ms": 398497465653.5681 } }, "kaala": "nishita", "days": [ { "local_date": "1982-08-16", "window": { "start": { "local": "1982-08-17T00:30:59-05:00", "utc": "1982-08-17T05:30:59Z", "ms": 398410259146.92255 }, "end": { "local": "1982-08-17T01:18:59-05:00", "utc": "1982-08-17T06:18:59Z", "ms": 398413139146.92255 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-08-17", "window": { "start": { "local": "1982-08-18T00:30:47-05:00", "utc": "1982-08-18T05:30:47Z", "ms": 398496646556.9512 }, "end": { "local": "1982-08-18T01:18:47-05:00", "utc": "1982-08-18T06:18:47Z", "ms": 398499526556.9512 } }, "covered_min": 14, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 03:52 on Tue 17 Aug to 00:44 on Wed 18 Aug.", "fact": "1982-08-17T08:52:14Z → 1982-08-18T05:44:26Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:31–01:19 on the 16th, 00:31–01:19 on the 17th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 16th and 14 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 819 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 1982: Tuesday 17 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": "1982-08-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-17", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 1982 falls on Tuesday 17 August. Caturdaśī runs from 03:52 on Tue 17 Aug to 00:44 on Wed 18 Aug and covers 14 of 48 minutes of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/shivaratri?on=1982-08-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20684, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1982-08-18T21:44:52-05:00", "utc": "1982-08-19T02:44:52Z", "ms": 398573091844.00256 }, "end": { "local": "1982-08-19T19:02:33-05:00", "utc": "1982-08-20T00:02:33Z", "ms": 398649752934.18677 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-18T21:44:52-05:00", "utc": "1982-08-19T02:44:52Z", "ms": 398573091844.00256 }, "end": { "local": "1982-08-19T19:02:33-05:00", "utc": "1982-08-20T00:02:33Z", "ms": 398649752934.18677 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-08-18", "window": { "start": { "local": "1982-08-18T12:30:02-05:00", "utc": "1982-08-18T17:30:02Z", "ms": 398539802276.662 }, "end": { "local": "1982-08-18T13:18:02-05:00", "utc": "1982-08-18T18:18:02Z", "ms": 398542682276.662 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-08-19", "window": { "start": { "local": "1982-08-19T12:29:49-05:00", "utc": "1982-08-19T17:29:49Z", "ms": 398626188689.61816 }, "end": { "local": "1982-08-19T13:17:49-05:00", "utc": "1982-08-19T18:17:49Z", "ms": 398629068689.61816 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 21:45 on Wed 18 Aug to 19:03 on Thu 19 Aug.", "fact": "1982-08-19T02:44:52Z → 1982-08-20T00:02:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 18th, 12:30–13:18 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 20684 s" }, { "step": "ruling", "text": "Rudra Vrata, Chicago, 1982: Thursday 19 August.", "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": "1982-08-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-19", "confidence": "determinate" } ], "quote": "In Chicago, Rudra Vrata 1982 falls on Thursday 19 August. Pratipadā runs from 21:45 on Wed 18 Aug to 19:03 on Thu 19 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6497, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1982-08-20T16:46:36-05:00", "utc": "1982-08-20T21:46:36Z", "ms": 398727995958.89575 }, "end": { "local": "1982-08-21T15:05:37-05:00", "utc": "1982-08-21T20:05:37Z", "ms": 398808337111.1158 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-20T16:46:36-05:00", "utc": "1982-08-20T21:46:36Z", "ms": 398727995958.89575 }, "end": { "local": "1982-08-21T15:05:37-05:00", "utc": "1982-08-21T20:05:37Z", "ms": 398808337111.1158 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-08-20", "window": { "start": { "local": "1982-08-20T12:29:35-05:00", "utc": "1982-08-20T17:29:35Z", "ms": 398712574619.99915 }, "end": { "local": "1982-08-20T13:17:35-05:00", "utc": "1982-08-20T18:17:35Z", "ms": 398715454619.99915 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-08-21", "window": { "start": { "local": "1982-08-21T12:29:20-05:00", "utc": "1982-08-21T17:29:20Z", "ms": 398798960075.33545 }, "end": { "local": "1982-08-21T13:17:20-05:00", "utc": "1982-08-21T18:17:20Z", "ms": 398801840075.33545 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 16:47 on Fri 20 Aug to 15:06 on Sat 21 Aug.", "fact": "1982-08-20T21:46:36Z → 1982-08-21T20:05:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 20th, 12:29–13:17 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6497 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Chicago, 1982: Saturday 21 August.", "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": "1982-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-21", "confidence": "determinate" } ], "quote": "In Chicago, Haritālikā Vrata (Hartalika Teej) 1982 falls on Saturday 21 August. Tṛtīyā runs from 16:47 on Fri 20 Aug to 15:06 on Sat 21 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2986, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-08-21T15:05:37-05:00", "utc": "1982-08-21T20:05:37Z", "ms": 398808337111.1158 }, "end": { "local": "1982-08-22T14:06:51-05:00", "utc": "1982-08-22T19:06:51Z", "ms": 398891211195.2356 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-21T15:05:37-05:00", "utc": "1982-08-21T20:05:37Z", "ms": 398808337111.1158 }, "end": { "local": "1982-08-22T14:06:51-05:00", "utc": "1982-08-22T19:06:51Z", "ms": 398891211195.2356 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-08-21", "window": { "start": { "local": "1982-08-21T12:29:20-05:00", "utc": "1982-08-21T17:29:20Z", "ms": 398798960075.33545 }, "end": { "local": "1982-08-21T13:17:20-05:00", "utc": "1982-08-21T18:17:20Z", "ms": 398801840075.33545 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-08-22", "window": { "start": { "local": "1982-08-22T12:29:05-05:00", "utc": "1982-08-22T17:29:05Z", "ms": 398885345064.58716 }, "end": { "local": "1982-08-22T13:17:05-05:00", "utc": "1982-08-22T18:17:05Z", "ms": 398888225064.58716 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:06 on Sat 21 Aug to 14:07 on Sun 22 Aug.", "fact": "1982-08-21T20:05:37Z → 1982-08-22T19:06:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 21st, 12:29–13:17 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 2986 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Chicago, 1982: Sunday 22 August.", "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": "1982-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-22", "confidence": "determinate" } ], "quote": "In Chicago, Gaṇeśa Caturthī 1982 falls on Sunday 22 August. Caturthī runs from 15:06 on Sat 21 Aug to 14:07 on Sun 22 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2299, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1982-08-22T14:06:51-05:00", "utc": "1982-08-22T19:06:51Z", "ms": 398891211195.2356 }, "end": { "local": "1982-08-23T13:55:09-05:00", "utc": "1982-08-23T18:55:09Z", "ms": 398976908928.3694 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-22T14:06:51-05:00", "utc": "1982-08-22T19:06:51Z", "ms": 398891211195.2356 }, "end": { "local": "1982-08-23T13:55:09-05:00", "utc": "1982-08-23T18:55:09Z", "ms": 398976908928.3694 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-08-22", "window": { "start": { "local": "1982-08-22T12:29:05-05:00", "utc": "1982-08-22T17:29:05Z", "ms": 398885345064.58716 }, "end": { "local": "1982-08-22T13:17:05-05:00", "utc": "1982-08-22T18:17:05Z", "ms": 398888225064.58716 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-08-23", "window": { "start": { "local": "1982-08-23T12:28:50-05:00", "utc": "1982-08-23T17:28:50Z", "ms": 398971729598.167 }, "end": { "local": "1982-08-23T13:16:50-05:00", "utc": "1982-08-23T18:16:50Z", "ms": 398974609598.167 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 14:07 on Sun 22 Aug to 13:55 on Mon 23 Aug.", "fact": "1982-08-22T19:06:51Z → 1982-08-23T18:55:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 22nd, 12:29–13:17 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 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: disputed → only-day · margin 2299 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Chicago, 1982: Monday 23 August.", "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": "1982-08-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-23", "confidence": "boundary" } ], "quote": "In Chicago, Ṛṣi Pañcamī 1982 falls on Monday 23 August. Pañcamī runs from 14:07 on Sun 22 Aug to 13:55 on Mon 23 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2299, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1982-08-23T13:55:09-05:00", "utc": "1982-08-23T18:55:09Z", "ms": 398976908928.3694 }, "end": { "local": "1982-08-24T14:31:49-05:00", "utc": "1982-08-24T19:31:49Z", "ms": 399065509248.7642 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-23T13:55:09-05:00", "utc": "1982-08-23T18:55:09Z", "ms": 398976908928.3694 }, "end": { "local": "1982-08-24T14:31:49-05:00", "utc": "1982-08-24T19:31:49Z", "ms": 399065509248.7642 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-08-23", "window": { "start": { "local": "1982-08-23T12:28:50-05:00", "utc": "1982-08-23T17:28:50Z", "ms": 398971729598.167 }, "end": { "local": "1982-08-23T13:16:50-05:00", "utc": "1982-08-23T18:16:50Z", "ms": 398974609598.167 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-08-24", "window": { "start": { "local": "1982-08-24T12:28:34-05:00", "utc": "1982-08-24T17:28:34Z", "ms": 399058113687.8412 }, "end": { "local": "1982-08-24T13:16:34-05:00", "utc": "1982-08-24T18:16:34Z", "ms": 399060993687.8412 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 13:55 on Mon 23 Aug to 14:32 on Tue 24 Aug.", "fact": "1982-08-23T18:55:09Z → 1982-08-24T19:31:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 23rd, 12:29–13:17 on the 24th.", "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 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: paraviddha → only-day · margin 2299 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Chicago, 1982: Tuesday 24 August.", "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": "1982-08-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-24", "confidence": "determinate" } ], "quote": "In Chicago, Sūrya Ṣaṣṭhī (Bhādrapada) 1982 falls on Tuesday 24 August. Ṣaṣṭhī runs from 13:55 on Mon 23 Aug to 14:32 on Tue 24 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4516, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1982-08-24T14:31:49-05:00", "utc": "1982-08-24T19:31:49Z", "ms": 399065509248.7642 }, "end": { "local": "1982-08-25T15:53:43-05:00", "utc": "1982-08-25T20:53:43Z", "ms": 399156823294.1285 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-24T14:31:49-05:00", "utc": "1982-08-24T19:31:49Z", "ms": 399065509248.7642 }, "end": { "local": "1982-08-25T15:53:43-05:00", "utc": "1982-08-25T20:53:43Z", "ms": 399156823294.1285 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-08-24", "window": { "start": { "local": "1982-08-24T12:28:34-05:00", "utc": "1982-08-24T17:28:34Z", "ms": 399058113687.8412 }, "end": { "local": "1982-08-24T13:16:34-05:00", "utc": "1982-08-24T18:16:34Z", "ms": 399060993687.8412 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-08-25", "window": { "start": { "local": "1982-08-25T12:28:17-05:00", "utc": "1982-08-25T17:28:17Z", "ms": 399144497346.5847 }, "end": { "local": "1982-08-25T13:16:17-05:00", "utc": "1982-08-25T18:16:17Z", "ms": 399147377346.5847 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 14:32 on Tue 24 Aug to 15:54 on Wed 25 Aug.", "fact": "1982-08-24T19:31:49Z → 1982-08-25T20:53:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 24th, 12:28–13:16 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 4516 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Chicago, 1982: Wednesday 25 August.", "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": "1982-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-25", "confidence": "determinate" } ], "quote": "In Chicago, Muktābharaṇa Vrata 1982 falls on Wednesday 25 August. Saptamī runs from 14:32 on Tue 24 Aug to 15:54 on Wed 25 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9446, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1982-08-25T15:53:43-05:00", "utc": "1982-08-25T20:53:43Z", "ms": 399156823294.1285 }, "end": { "local": "1982-08-26T17:52:55-05:00", "utc": "1982-08-26T22:52:55Z", "ms": 399250374524.0939 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-25T15:53:43-05:00", "utc": "1982-08-25T20:53:43Z", "ms": 399156823294.1285 }, "end": { "local": "1982-08-26T17:52:55-05:00", "utc": "1982-08-26T22:52:55Z", "ms": 399250374524.0939 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-08-25", "window": { "start": { "local": "1982-08-25T12:28:17-05:00", "utc": "1982-08-25T17:28:17Z", "ms": 399144497346.5847 }, "end": { "local": "1982-08-25T13:16:17-05:00", "utc": "1982-08-25T18:16:17Z", "ms": 399147377346.5847 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-08-26", "window": { "start": { "local": "1982-08-26T12:28:01-05:00", "utc": "1982-08-26T17:28:01Z", "ms": 399230880588.4397 }, "end": { "local": "1982-08-26T13:16:01-05:00", "utc": "1982-08-26T18:16:01Z", "ms": 399233760588.4397 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 15:54 on Wed 25 Aug to 17:53 on Thu 26 Aug.", "fact": "1982-08-25T20:53:43Z → 1982-08-26T22:52:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 25th, 12:28–13:16 on the 26th.", "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 25th and 48 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9446 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Chicago, 1982: Thursday 26 August.", "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": "1982-08-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-26", "confidence": "determinate" } ], "quote": "In Chicago, Rādhāṣṭamī 1982 falls on Thursday 26 August. Aṣṭamī runs from 15:54 on Wed 25 Aug to 17:53 on Thu 26 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-08-29", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17463, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-08-28T22:52:17-05:00", "utc": "1982-08-29T03:52:17Z", "ms": 399441137297.7366 }, "end": { "local": "1982-08-30T01:23:11-05:00", "utc": "1982-08-30T06:23:11Z", "ms": 399536591465.91925 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-28T22:52:17-05:00", "utc": "1982-08-29T03:52:17Z", "ms": 399441137297.7366 }, "end": { "local": "1982-08-30T01:23:11-05:00", "utc": "1982-08-30T06:23:11Z", "ms": 399536591465.91925 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-08-29", "window": { "start": { "local": "1982-08-29T06:13:13-05:00", "utc": "1982-08-29T11:13:13Z", "ms": 399467592732.32715 }, "end": { "local": "1982-08-29T06:13:13-05:00", "utc": "1982-08-29T11:13:13Z", "ms": 399467592732.32715 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-08-30", "window": { "start": { "local": "1982-08-30T06:14:15-05:00", "utc": "1982-08-30T11:14:15Z", "ms": 399554054608.4936 }, "end": { "local": "1982-08-30T06:14:15-05:00", "utc": "1982-08-30T11:14:15Z", "ms": 399554054608.4936 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:52 on Sat 28 Aug to 01:23 on Mon 30 Aug.", "fact": "1982-08-29T03:52:17Z → 1982-08-30T06:23:11Z" }, { "step": "kaala", "text": "Sunrise is at 06:13 on the 29th and 06:14 on the 30th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 29th and is not on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17463 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Chicago, 1982: Sunday 29 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": "1982-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-29", "confidence": "determinate" } ], "quote": "In Chicago, Parivartanī Ekādaśī 1982 falls on Sunday 29 August. Ekādaśī runs from 22:52 on Sat 28 Aug to 01:23 on Mon 30 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-08-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31750, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1982-08-30T01:23:11-05:00", "utc": "1982-08-30T06:23:11Z", "ms": 399536591465.91925 }, "end": { "local": "1982-08-31T03:37:21-05:00", "utc": "1982-08-31T08:37:21Z", "ms": 399631040899.82996 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-30T01:23:11-05:00", "utc": "1982-08-30T06:23:11Z", "ms": 399536591465.91925 }, "end": { "local": "1982-08-31T03:37:21-05:00", "utc": "1982-08-31T08:37:21Z", "ms": 399631040899.82996 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-08-30", "window": { "start": { "local": "1982-08-30T12:26:50-05:00", "utc": "1982-08-30T17:26:50Z", "ms": 399576409699.1415 }, "end": { "local": "1982-08-30T13:14:50-05:00", "utc": "1982-08-30T18:14:50Z", "ms": 399579289699.1415 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-08-31", "window": { "start": { "local": "1982-08-31T12:26:31-05:00", "utc": "1982-08-31T17:26:31Z", "ms": 399662791097.5874 }, "end": { "local": "1982-08-31T13:14:31-05:00", "utc": "1982-08-31T18:14:31Z", "ms": 399665671097.5874 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 01:23 on Mon 30 Aug to 03:37 on Tue 31 Aug.", "fact": "1982-08-30T06:23:11Z → 1982-08-31T08:37:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 30th, 12:27–13:15 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 30th and 0 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31750 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Chicago, 1982: Monday 30 August.", "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": "1982-08-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-30", "confidence": "determinate" } ], "quote": "In Chicago, Vāmana Jayantī 1982 falls on Monday 30 August. Dvādaśī runs from 01:23 on Mon 30 Aug to 03:37 on Tue 31 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/pradosha-vrata?on=1982-08-31", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-08-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24213, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-08-31T03:37:21-05:00", "utc": "1982-08-31T08:37:21Z", "ms": 399631040899.82996 }, "end": { "local": "1982-09-01T05:25:40-05:00", "utc": "1982-09-01T10:25:40Z", "ms": 399723940234.54486 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-08-31T03:37:21-05:00", "utc": "1982-08-31T08:37:21Z", "ms": 399631040899.82996 }, "end": { "local": "1982-09-01T05:25:40-05:00", "utc": "1982-09-01T10:25:40Z", "ms": 399723940234.54486 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-08-30", "window": { "start": { "local": "1982-08-30T19:27:25-05:00", "utc": "1982-08-31T00:27:25Z", "ms": 399601644789.78937 }, "end": { "local": "1982-08-30T20:53:48-05:00", "utc": "1982-08-31T01:53:48Z", "ms": 399606827674.89215 } }, "covered_min": 0, "window_min": 86, "qualifies": false }, { "local_date": "1982-08-31", "window": { "start": { "local": "1982-08-31T19:25:46-05:00", "utc": "1982-09-01T00:25:46Z", "ms": 399687945767.1143 }, "end": { "local": "1982-08-31T20:52:30-05:00", "utc": "1982-09-01T01:52:30Z", "ms": 399693150090.9702 } }, "covered_min": 87, "window_min": 87, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:37 on Tue 31 Aug to 05:26 on Wed 1 Sep.", "fact": "1982-08-31T08:37:21Z → 1982-09-01T10:25:40Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:27–20:54 on the 30th, 19:26–20:53 on the 31st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 86 minutes on the 30th and 87 of 87 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 24213 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 1982: Tuesday 31 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": "1982-08-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-08-31", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 1982 falls on Tuesday 31 August. Trayodaśī runs from 03:37 on Tue 31 Aug to 05:26 on Wed 1 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-08-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-09-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1546, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-09-01T05:25:40-05:00", "utc": "1982-09-01T10:25:40Z", "ms": 399723940234.54486 }, "end": { "local": "1982-09-02T06:43:06-05:00", "utc": "1982-09-02T11:43:06Z", "ms": 399814985794.7627 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1982-09-01T05:25:40-05:00", "utc": "1982-09-01T10:25:40Z", "ms": 399723940234.54486 }, "end": { "local": "1982-09-02T06:43:06-05:00", "utc": "1982-09-02T11:43:06Z", "ms": 399814985794.7627 } }, "kaala": "udaya-3", "days": [ { "local_date": "1982-09-01", "window": { "start": { "local": "1982-09-01T06:16:18-05:00", "utc": "1982-09-01T11:16:18Z", "ms": 399726978196.0336 }, "end": { "local": "1982-09-01T08:53:52-05:00", "utc": "1982-09-01T13:53:52Z", "ms": 399736431790.17035 } }, "covered_min": 158, "window_min": 158, "qualifies": true }, { "local_date": "1982-09-02", "window": { "start": { "local": "1982-09-02T06:17:20-05:00", "utc": "1982-09-02T11:17:20Z", "ms": 399813439918.60126 }, "end": { "local": "1982-09-02T08:54:21-05:00", "utc": "1982-09-02T13:54:21Z", "ms": 399822861139.0475 } }, "covered_min": 26, "window_min": 157, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:26 on Wed 1 Sep to 06:43 on Thu 2 Sep.", "fact": "1982-09-01T10:25:40Z → 1982-09-02T11:43:06Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:16–08:54 on the 1st, 06:17–08:54 on the 2nd.", "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 158 of 158 minutes on the 1st and 26 of 157 on the 2nd.", "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 1546 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Chicago, 1982: Wednesday 1 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": "1982-09-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-09-01", "confidence": "determinate" } ], "quote": "In Chicago, Ananta Caturdaśī 1982 falls on Wednesday 1 September. Caturdaśī runs from 05:26 on Wed 1 Sep to 06:43 on Thu 2 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/sankashta-chaturthi?on=1982-09-06", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-09-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30822, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-09-06T06:50:05-05:00", "utc": "1982-09-06T11:50:05Z", "ms": 400161004819.87 }, "end": { "local": "1982-09-07T05:51:05-05:00", "utc": "1982-09-07T10:51:05Z", "ms": 400243865101.3323 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-09-06T06:50:05-05:00", "utc": "1982-09-06T11:50:05Z", "ms": 400161004819.87 }, "end": { "local": "1982-09-07T05:51:05-05:00", "utc": "1982-09-07T10:51:05Z", "ms": 400243865101.3323 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-09-05", "window": { "start": { "local": "1982-09-05T20:49:53-05:00", "utc": "1982-09-06T01:49:53Z", "ms": 400124992753.1713 }, "end": { "local": "1982-09-05T20:49:53-05:00", "utc": "1982-09-06T01:49:53Z", "ms": 400124992753.1713 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-09-06", "window": { "start": { "local": "1982-09-06T21:17:23-05:00", "utc": "1982-09-07T02:17:23Z", "ms": 400213042905.04004 }, "end": { "local": "1982-09-06T21:17:23-05:00", "utc": "1982-09-07T02:17:23Z", "ms": 400213042905.04004 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:50 on Mon 6 Sep to 05:51 on Tue 7 Sep.", "fact": "1982-09-06T11:50:05Z → 1982-09-07T10:51:05Z" }, { "step": "kaala", "text": "Moonrise is at 20:50 on the 5th and 21:17 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 5th and is on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30822 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 1982: Monday 6 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": "1982-09-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-09-06", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 1982 falls on Monday 6 September. Caturthī runs from 06:50 on Mon 6 Sep to 05:51 on Tue 7 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/sankashta-chaturthi?on=1982-09-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16921, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1982-09-08T04:34:25-05:00", "utc": "1982-09-08T09:34:25Z", "ms": 400325665159.95215 }, "end": { "local": "1982-09-09T03:02:21-05:00", "utc": "1982-09-09T08:02:21Z", "ms": 400406541100.017 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-09-08T04:34:25-05:00", "utc": "1982-09-08T09:34:25Z", "ms": 400325665159.95215 }, "end": { "local": "1982-09-09T03:02:21-05:00", "utc": "1982-09-09T08:02:21Z", "ms": 400406541100.017 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-09-07", "window": { "start": { "local": "1982-09-07T21:47:00-05:00", "utc": "1982-09-08T02:47:00Z", "ms": 400301220081.1179 }, "end": { "local": "1982-09-07T21:47:00-05:00", "utc": "1982-09-08T02:47:00Z", "ms": 400301220081.1179 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-09-08", "window": { "start": { "local": "1982-09-08T22:20:20-05:00", "utc": "1982-09-09T03:20:20Z", "ms": 400389620291.53864 }, "end": { "local": "1982-09-08T22:20:20-05:00", "utc": "1982-09-09T03:20:20Z", "ms": 400389620291.53864 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 04:34 on Wed 8 Sep to 03:02 on Thu 9 Sep.", "fact": "1982-09-08T09:34:25Z → 1982-09-09T08:02:21Z" }, { "step": "kaala", "text": "Moonrise is at 21:47 on the 7th and 22:20 on the 8th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is not on the 7th and is on the 8th.", "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 16921 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Chicago, 1982: Wednesday 8 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": "1982-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-09-08", "confidence": "determinate" } ], "quote": "In Chicago, Candra Ṣaṣṭhī 1982 falls on Wednesday 8 September. Ṣaṣṭhī runs from 04:34 on Wed 8 Sep to 03:02 on Thu 9 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-09-09", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 1656, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1982-09-10T01:16:26-05:00", "utc": "1982-09-10T06:16:26Z", "ms": 400486586284.9872 }, "end": { "local": "1982-09-10T23:17:50-05:00", "utc": "1982-09-11T04:17:50Z", "ms": 400565869934.635 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-09-10T01:16:26-05:00", "utc": "1982-09-10T06:16:26Z", "ms": 400486586284.9872 }, "end": { "local": "1982-09-10T23:17:50-05:00", "utc": "1982-09-11T04:17:50Z", "ms": 400565869934.635 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-09-09", "window": { "start": { "local": "1982-09-09T22:59:13-05:00", "utc": "1982-09-10T03:59:13Z", "ms": 400478352651.0427 }, "end": { "local": "1982-09-09T22:59:13-05:00", "utc": "1982-09-10T03:59:13Z", "ms": 400478352651.0427 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-09-10", "window": { "start": { "local": "1982-09-10T23:45:26-05:00", "utc": "1982-09-11T04:45:26Z", "ms": 400567526373.929 }, "end": { "local": "1982-09-10T23:45:26-05:00", "utc": "1982-09-11T04:45:26Z", "ms": 400567526373.929 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 01:16 on Fri 10 Sep to 23:18 on Fri 10 Sep.", "fact": "1982-09-10T06:16:26Z → 1982-09-11T04:17:50Z" }, { "step": "kaala", "text": "Moonrise is at 22:59 on the 9th and 23:45 on the 10th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 9th and is not on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 1656 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Chicago, 1982: Thursday 9 September.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "mahalakshmi-vrata-samapana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-09-09", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-09-09", "confidence": "boundary" } ], "quote": "In Chicago, Mahālakṣmī Vrata Samāpana 1982 falls on Thursday 9 September. Aṣṭamī runs from 01:16 on Fri 10 Sep to 23:18 on Fri 10 Sep, and is current at moonrise on neither day.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9519, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1982-09-10T01:16:26-05:00", "utc": "1982-09-10T06:16:26Z", "ms": 400486586284.9872 }, "end": { "local": "1982-09-10T23:17:50-05:00", "utc": "1982-09-11T04:17:50Z", "ms": 400565869934.635 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-09-10T01:16:26-05:00", "utc": "1982-09-10T06:16:26Z", "ms": 400486586284.9872 }, "end": { "local": "1982-09-10T23:17:50-05:00", "utc": "1982-09-11T04:17:50Z", "ms": 400565869934.635 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-09-09", "window": { "start": { "local": "1982-09-09T19:10:32-05:00", "utc": "1982-09-10T00:10:32Z", "ms": 400464632449.5377 }, "end": { "local": "1982-09-09T20:40:33-05:00", "utc": "1982-09-10T01:40:33Z", "ms": 400470032545.76086 } }, "covered_min": 0, "window_min": 90, "qualifies": false }, { "local_date": "1982-09-10", "window": { "start": { "local": "1982-09-10T19:08:49-05:00", "utc": "1982-09-11T00:08:49Z", "ms": 400550929098.4855 }, "end": { "local": "1982-09-10T20:39:11-05:00", "utc": "1982-09-11T01:39:11Z", "ms": 400556351208.18884 } }, "covered_min": 90, "window_min": 90, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 01:16 on Fri 10 Sep to 23:18 on Fri 10 Sep.", "fact": "1982-09-10T06:16:26Z → 1982-09-11T04:17:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:11–20:41 on the 9th, 19:09–20:39 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 0 of 90 minutes on the 9th and 90 of 90 on the 10th.", "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 9519 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Chicago, 1982: Friday 10 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": "1982-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-09-10", "confidence": "determinate" } ], "quote": "In Chicago, Jitāṣṭamī (Jitiya) 1982 falls on Friday 10 September. Aṣṭamī runs from 01:16 on Fri 10 Sep to 23:18 on Fri 10 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-09-13", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35566, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-09-12T18:48:00-05:00", "utc": "1982-09-12T23:48:00Z", "ms": 400722480208.19037 }, "end": { "local": "1982-09-13T16:21:24-05:00", "utc": "1982-09-13T21:21:24Z", "ms": 400800084245.2147 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-09-12T18:48:00-05:00", "utc": "1982-09-12T23:48:00Z", "ms": 400722480208.19037 }, "end": { "local": "1982-09-13T16:21:24-05:00", "utc": "1982-09-13T21:21:24Z", "ms": 400800084245.2147 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-09-12", "window": { "start": { "local": "1982-09-12T06:27:37-05:00", "utc": "1982-09-12T11:27:37Z", "ms": 400678056723.991 }, "end": { "local": "1982-09-12T06:27:37-05:00", "utc": "1982-09-12T11:27:37Z", "ms": 400678056723.991 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-09-13", "window": { "start": { "local": "1982-09-13T06:28:39-05:00", "utc": "1982-09-13T11:28:39Z", "ms": 400764518586.1737 }, "end": { "local": "1982-09-13T06:28:39-05:00", "utc": "1982-09-13T11:28:39Z", "ms": 400764518586.1737 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:48 on Sun 12 Sep to 16:21 on Mon 13 Sep.", "fact": "1982-09-12T23:48:00Z → 1982-09-13T21:21:24Z" }, { "step": "kaala", "text": "Sunrise is at 06:28 on the 12th and 06:29 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 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35566 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Chicago, 1982: Monday 13 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": "1982-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-09-13", "confidence": "determinate" } ], "quote": "In Chicago, Indirā Ekādaśī 1982 falls on Monday 13 September. Ekādaśī runs from 18:48 on Sun 12 Sep to 16:21 on Mon 13 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-09-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-09-14", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-09-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18588, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-09-14T13:52:05-05:00", "utc": "1982-09-14T18:52:05Z", "ms": 400877525237.4524 }, "end": { "local": "1982-09-15T11:25:35-05:00", "utc": "1982-09-15T16:25:35Z", "ms": 400955134550.3417 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-09-14T13:52:05-05:00", "utc": "1982-09-14T18:52:05Z", "ms": 400877525237.4524 }, "end": { "local": "1982-09-15T11:25:35-05:00", "utc": "1982-09-15T16:25:35Z", "ms": 400955134550.3417 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-09-14", "window": { "start": { "local": "1982-09-14T19:01:53-05:00", "utc": "1982-09-15T00:01:53Z", "ms": 400896113374.77716 }, "end": { "local": "1982-09-14T20:33:44-05:00", "utc": "1982-09-15T01:33:44Z", "ms": 400901623926.2851 } }, "covered_min": 92, "window_min": 92, "qualifies": true }, { "local_date": "1982-09-15", "window": { "start": { "local": "1982-09-15T19:00:09-05:00", "utc": "1982-09-16T00:00:09Z", "ms": 400982409004.5283 }, "end": { "local": "1982-09-15T20:32:22-05:00", "utc": "1982-09-16T01:32:22Z", "ms": 400987941748.36755 } }, "covered_min": 0, "window_min": 92, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:52 on Tue 14 Sep to 11:26 on Wed 15 Sep.", "fact": "1982-09-14T18:52:05Z → 1982-09-15T16:25:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:02–20:34 on the 14th, 19:00–20:32 on the 15th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 92 of 92 minutes on the 14th and 0 of 92 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18588 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 1982: Tuesday 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": "1982-09-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-09-14", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 1982 falls on Tuesday 14 September. Trayodaśī runs from 13:52 on Tue 14 Sep to 11:26 on Wed 15 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-09-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/shivaratri?on=1982-09-15", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28723, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-09-15T11:25:35-05:00", "utc": "1982-09-15T16:25:35Z", "ms": 400955134550.3417 }, "end": { "local": "1982-09-16T09:08:40-05:00", "utc": "1982-09-16T14:08:40Z", "ms": 401033319654.99 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-09-15T11:25:35-05:00", "utc": "1982-09-15T16:25:35Z", "ms": 400955134550.3417 }, "end": { "local": "1982-09-16T09:08:40-05:00", "utc": "1982-09-16T14:08:40Z", "ms": 401033319654.99 } }, "kaala": "nishita", "days": [ { "local_date": "1982-09-14", "window": { "start": { "local": "1982-09-15T00:22:18-05:00", "utc": "1982-09-15T05:22:18Z", "ms": 400915337942.932 }, "end": { "local": "1982-09-15T01:10:18-05:00", "utc": "1982-09-15T06:10:18Z", "ms": 400918217942.932 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-09-15", "window": { "start": { "local": "1982-09-16T00:21:57-05:00", "utc": "1982-09-16T05:21:57Z", "ms": 401001716793.9254 }, "end": { "local": "1982-09-16T01:09:57-05:00", "utc": "1982-09-16T06:09:57Z", "ms": 401004596793.9254 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:26 on Wed 15 Sep to 09:09 on Thu 16 Sep.", "fact": "1982-09-15T16:25:35Z → 1982-09-16T14:08:40Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:22–01:10 on the 14th, 00:22–01:10 on the 15th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28723 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 1982: Wednesday 15 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": "1982-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-09-15", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 1982 falls on Wednesday 15 September. Caturdaśī runs from 11:26 on Wed 15 Sep to 09:09 on Thu 16 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/shivaratri?on=1982-09-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-09-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17465, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1982-09-16T09:08:40-05:00", "utc": "1982-09-16T14:08:40Z", "ms": 401033319654.99 }, "end": { "local": "1982-09-17T07:09:05-05:00", "utc": "1982-09-17T12:09:05Z", "ms": 401112544926.81104 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-09-16T09:08:40-05:00", "utc": "1982-09-16T14:08:40Z", "ms": 401033319654.99 }, "end": { "local": "1982-09-17T07:09:05-05:00", "utc": "1982-09-17T12:09:05Z", "ms": 401112544926.81104 } }, "kaala": "aparahna", "days": [ { "local_date": "1982-09-16", "window": { "start": { "local": "1982-09-16T13:59:45-05:00", "utc": "1982-09-16T18:59:45Z", "ms": 401050784540.7124 }, "end": { "local": "1982-09-16T16:29:05-05:00", "utc": "1982-09-16T21:29:05Z", "ms": 401059744526.50903 } }, "covered_min": 149, "window_min": 149, "qualifies": true }, { "local_date": "1982-09-17", "window": { "start": { "local": "1982-09-17T13:59:07-05:00", "utc": "1982-09-17T18:59:07Z", "ms": 401137146648.59534 }, "end": { "local": "1982-09-17T16:27:53-05:00", "utc": "1982-09-17T21:27:53Z", "ms": 401146073286.7081 } }, "covered_min": 0, "window_min": 149, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 09:09 on Thu 16 Sep to 07:09 on Fri 17 Sep.", "fact": "1982-09-16T14:08:40Z → 1982-09-17T12:09:05Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 14:00–16:29 on the 16th, 13:59–16:28 on the 17th.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 149 of 149 minutes on the 16th and 0 of 149 on the 17th.", "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 17465 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Chicago, 1982: Thursday 16 September.", "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": "1982-09-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-09-16", "confidence": "determinate" } ], "quote": "In Chicago, Mahālaya Amāvāsyā 1982 falls on Thursday 16 September. Amāvasyā runs from 09:09 on Thu 16 Sep to 07:09 on Fri 17 Sep and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/vinayaka-chaturthi?on=1982-09-20", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27743, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-09-20T04:13:35-05:00", "utc": "1982-09-20T09:13:35Z", "ms": 401361214587.5293 }, "end": { "local": "1982-09-21T04:36:55-05:00", "utc": "1982-09-21T09:36:55Z", "ms": 401449015399.51434 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-09-20T04:13:35-05:00", "utc": "1982-09-20T09:13:35Z", "ms": 401361214587.5293 }, "end": { "local": "1982-09-21T04:36:55-05:00", "utc": "1982-09-21T09:36:55Z", "ms": 401449015399.51434 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-09-20", "window": { "start": { "local": "1982-09-20T12:19:40-05:00", "utc": "1982-09-20T17:19:40Z", "ms": 401390379783.98083 }, "end": { "local": "1982-09-20T13:07:40-05:00", "utc": "1982-09-20T18:07:40Z", "ms": 401393259783.98083 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-09-21", "window": { "start": { "local": "1982-09-21T12:19:19-05:00", "utc": "1982-09-21T17:19:19Z", "ms": 401476758694.7145 }, "end": { "local": "1982-09-21T13:07:19-05:00", "utc": "1982-09-21T18:07:19Z", "ms": 401479638694.7145 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:14 on Mon 20 Sep to 04:37 on Tue 21 Sep.", "fact": "1982-09-20T09:13:35Z → 1982-09-21T09:36:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 20th, 12:19–13:07 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 20th and 0 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27743 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 1982: Monday 20 September.", "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": "1982-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-09-20", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 1982 falls on Monday 20 September. Caturthī runs from 04:14 on Mon 20 Sep to 04:37 on Tue 21 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/vinayaka-chaturthi?on=1982-09-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/ekadashi?on=1982-09-28", "festival": "ekadashi", "name": "Śukla Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38154, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-09-27T17:19:08-05:00", "utc": "1982-09-27T22:19:08Z", "ms": 402013148479.4226 }, "end": { "local": "1982-09-28T19:09:30-05:00", "utc": "1982-09-29T00:09:30Z", "ms": 402106170017.6343 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-09-27T17:19:08-05:00", "utc": "1982-09-27T22:19:08Z", "ms": 402013148479.4226 }, "end": { "local": "1982-09-28T19:09:30-05:00", "utc": "1982-09-29T00:09:30Z", "ms": 402106170017.6343 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-09-27", "window": { "start": { "local": "1982-09-27T06:43:14-05:00", "utc": "1982-09-27T11:43:14Z", "ms": 401974993999.3231 }, "end": { "local": "1982-09-27T06:43:14-05:00", "utc": "1982-09-27T11:43:14Z", "ms": 401974993999.3231 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-09-28", "window": { "start": { "local": "1982-09-28T06:44:17-05:00", "utc": "1982-09-28T11:44:17Z", "ms": 402061457491.3959 }, "end": { "local": "1982-09-28T06:44:17-05:00", "utc": "1982-09-28T11:44:17Z", "ms": 402061457491.3959 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:19 on Mon 27 Sep to 19:10 on Tue 28 Sep.", "fact": "1982-09-27T22:19:08Z → 1982-09-29T00:09:30Z" }, { "step": "kaala", "text": "Sunrise is at 06:43 on the 27th and 06:44 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 27th and is on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38154 s" }, { "step": "ruling", "text": "Śukla Ekādaśī, Chicago, 1982: Tuesday 28 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": "1982-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-09-28", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Ekādaśī 1982 falls on Tuesday 28 September. Ekādaśī runs from 17:19 on Mon 27 Sep to 19:10 on Tue 28 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-09-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-09-30", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-09-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 582, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-09-29T20:22:55-05:00", "utc": "1982-09-30T01:22:55Z", "ms": 402196974550.81256 }, "end": { "local": "1982-09-30T20:56:02-05:00", "utc": "1982-10-01T01:56:02Z", "ms": 402285361876.09174 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-09-29T20:22:55-05:00", "utc": "1982-09-30T01:22:55Z", "ms": 402196974550.81256 }, "end": { "local": "1982-09-30T20:56:02-05:00", "utc": "1982-10-01T01:56:02Z", "ms": 402285361876.09174 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-09-29", "window": { "start": { "local": "1982-09-29T18:35:48-05:00", "utc": "1982-09-29T23:35:48Z", "ms": 402190547614.3409 }, "end": { "local": "1982-09-29T20:13:13-05:00", "utc": "1982-09-30T01:13:13Z", "ms": 402196392603.8143 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "1982-09-30", "window": { "start": { "local": "1982-09-30T18:34:04-05:00", "utc": "1982-09-30T23:34:04Z", "ms": 402276844396.091 }, "end": { "local": "1982-09-30T20:11:52-05:00", "utc": "1982-10-01T01:11:52Z", "ms": 402282711691.7711 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:23 on Wed 29 Sep to 20:56 on Thu 30 Sep.", "fact": "1982-09-30T01:22:55Z → 1982-10-01T01:56:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:36–20:13 on the 29th, 18:34–20:12 on the 30th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 97 minutes on the 29th and 98 of 98 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 582 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 1982: Thursday 30 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": "1982-09-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-09-30", "confidence": "boundary" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 1982 falls on Thursday 30 September. Trayodaśī runs from 20:23 on Wed 29 Sep to 20:56 on Thu 30 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-09-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/sankashta-chaturthi?on=1982-10-05", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-10-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17025, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-10-05T15:36:57-05:00", "utc": "1982-10-05T20:36:57Z", "ms": 402698216890.976 }, "end": { "local": "1982-10-06T13:38:53-05:00", "utc": "1982-10-06T18:38:53Z", "ms": 402777532801.11505 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-10-05T15:36:57-05:00", "utc": "1982-10-05T20:36:57Z", "ms": 402698216890.976 }, "end": { "local": "1982-10-06T13:38:53-05:00", "utc": "1982-10-06T18:38:53Z", "ms": 402777532801.11505 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-10-05", "window": { "start": { "local": "1982-10-05T20:20:42-05:00", "utc": "1982-10-06T01:20:42Z", "ms": 402715242232.7595 }, "end": { "local": "1982-10-05T20:20:42-05:00", "utc": "1982-10-06T01:20:42Z", "ms": 402715242232.7595 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-10-06", "window": { "start": { "local": "1982-10-06T20:58:07-05:00", "utc": "1982-10-07T01:58:07Z", "ms": 402803887327.5193 }, "end": { "local": "1982-10-06T20:58:07-05:00", "utc": "1982-10-07T01:58:07Z", "ms": 402803887327.5193 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:37 on Tue 5 Oct to 13:39 on Wed 6 Oct.", "fact": "1982-10-05T20:36:57Z → 1982-10-06T18:38:53Z" }, { "step": "kaala", "text": "Moonrise is at 20:21 on the 5th and 20:58 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17025 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 1982: Tuesday 5 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": "1982-10-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-10-05", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 1982 falls on Tuesday 5 October. Caturthī runs from 15:37 on Tue 5 Oct to 13:39 on Wed 6 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/sankashta-chaturthi?on=1982-10-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/ekadashi?on=1982-10-12", "festival": "ekadashi", "name": "Kṛṣṇa Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-10-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19565, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-10-12T01:33:27-05:00", "utc": "1982-10-12T06:33:27Z", "ms": 403252406505.1554 }, "end": { "local": "1982-10-12T23:46:08-05:00", "utc": "1982-10-13T04:46:08Z", "ms": 403332367709.4661 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-10-12T01:33:27-05:00", "utc": "1982-10-12T06:33:27Z", "ms": 403252406505.1554 }, "end": { "local": "1982-10-12T23:46:08-05:00", "utc": "1982-10-13T04:46:08Z", "ms": 403332367709.4661 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-10-12", "window": { "start": { "local": "1982-10-12T06:59:32-05:00", "utc": "1982-10-12T11:59:32Z", "ms": 403271971762.43024 }, "end": { "local": "1982-10-12T06:59:32-05:00", "utc": "1982-10-12T11:59:32Z", "ms": 403271971762.43024 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-10-13", "window": { "start": { "local": "1982-10-13T07:00:39-05:00", "utc": "1982-10-13T12:00:39Z", "ms": 403358439350.4132 }, "end": { "local": "1982-10-13T07:00:39-05:00", "utc": "1982-10-13T12:00:39Z", "ms": 403358439350.4132 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:33 on Tue 12 Oct to 23:46 on Tue 12 Oct.", "fact": "1982-10-12T06:33:27Z → 1982-10-13T04:46:08Z" }, { "step": "kaala", "text": "Sunrise is at 07:00 on the 12th and 07:01 on the 13th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 12th and is not on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19565 s" }, { "step": "ruling", "text": "Kṛṣṇa Ekādaśī, Chicago, 1982: Tuesday 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": "1982-10-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-10-12", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Ekādaśī 1982 falls on Tuesday 12 October. Ekādaśī runs from 01:33 on Tue 12 Oct to 23:46 on Tue 12 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-10-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-10-14", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-10-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3103, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-10-13T22:08:40-05:00", "utc": "1982-10-14T03:08:40Z", "ms": 403412919973.2632 }, "end": { "local": "1982-10-14T20:45:28-05:00", "utc": "1982-10-15T01:45:28Z", "ms": 403494328216.7453 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-10-13T22:08:40-05:00", "utc": "1982-10-14T03:08:40Z", "ms": 403412919973.2632 }, "end": { "local": "1982-10-14T20:45:28-05:00", "utc": "1982-10-15T01:45:28Z", "ms": 403494328216.7453 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-10-13", "window": { "start": { "local": "1982-10-13T18:12:24-05:00", "utc": "1982-10-13T23:12:24Z", "ms": 403398743971.96814 }, "end": { "local": "1982-10-13T19:54:59-05:00", "utc": "1982-10-14T00:54:59Z", "ms": 403404899078.8351 } }, "covered_min": 0, "window_min": 103, "qualifies": false }, { "local_date": "1982-10-14", "window": { "start": { "local": "1982-10-14T18:10:48-05:00", "utc": "1982-10-14T23:10:48Z", "ms": 403485048272.16156 }, "end": { "local": "1982-10-14T19:53:45-05:00", "utc": "1982-10-15T00:53:45Z", "ms": 403491225239.89417 } }, "covered_min": 103, "window_min": 103, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:09 on Wed 13 Oct to 20:45 on Thu 14 Oct.", "fact": "1982-10-14T03:08:40Z → 1982-10-15T01:45:28Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:12–19:55 on the 13th, 18:11–19:54 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 103 minutes on the 13th and 103 of 103 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 3103 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 1982: Thursday 14 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": "1982-10-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-10-14", "confidence": "boundary" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 1982 falls on Thursday 14 October. Trayodaśī runs from 22:09 on Wed 13 Oct to 20:45 on Thu 14 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-10-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/shivaratri?on=1982-10-14", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-10-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12444, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-10-14T20:45:28-05:00", "utc": "1982-10-15T01:45:28Z", "ms": 403494328216.7453 }, "end": { "local": "1982-10-15T19:41:58-05:00", "utc": "1982-10-16T00:41:58Z", "ms": 403576917748.6548 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": true, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-10-14T20:45:28-05:00", "utc": "1982-10-15T01:45:28Z", "ms": 403494328216.7453 }, "end": { "local": "1982-10-15T19:41:58-05:00", "utc": "1982-10-16T00:41:58Z", "ms": 403576917748.6548 } }, "kaala": "nishita", "days": [ { "local_date": "1982-10-14", "window": { "start": { "local": "1982-10-15T00:12:52-05:00", "utc": "1982-10-15T05:12:52Z", "ms": 403506771901.15875 }, "end": { "local": "1982-10-15T01:00:52-05:00", "utc": "1982-10-15T06:00:52Z", "ms": 403509651901.15875 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-10-15", "window": { "start": { "local": "1982-10-16T00:12:39-05:00", "utc": "1982-10-16T05:12:39Z", "ms": 403593158734.02185 }, "end": { "local": "1982-10-16T01:00:39-05:00", "utc": "1982-10-16T06:00:39Z", "ms": 403596038734.02185 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 20:45 on Thu 14 Oct to 19:42 on Fri 15 Oct.", "fact": "1982-10-15T01:45:28Z → 1982-10-16T00:41:58Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:13–01:01 on the 14th, 00:13–01:01 on the 15th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12444 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 1982: Thursday 14 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": "1982-10-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-10-14", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 1982 falls on Thursday 14 October. Caturdaśī runs from 20:45 on Thu 14 Oct to 19:42 on Fri 15 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/shivaratri?on=1982-10-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-10-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21480, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1982-10-16T19:04:06-05:00", "utc": "1982-10-17T00:04:06Z", "ms": 403661046269.01794 }, "end": { "local": "1982-10-17T18:57:40-05:00", "utc": "1982-10-17T23:57:40Z", "ms": 403747059676.72614 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-10-16T19:04:06-05:00", "utc": "1982-10-17T00:04:06Z", "ms": 403661046269.01794 }, "end": { "local": "1982-10-17T18:57:40-05:00", "utc": "1982-10-17T23:57:40Z", "ms": 403747059676.72614 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-10-16", "window": { "start": { "local": "1982-10-16T12:11:52-05:00", "utc": "1982-10-16T17:11:52Z", "ms": 403636311677.4413 }, "end": { "local": "1982-10-16T12:59:52-05:00", "utc": "1982-10-16T17:59:52Z", "ms": 403639191677.4413 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-10-17", "window": { "start": { "local": "1982-10-17T12:11:39-05:00", "utc": "1982-10-17T17:11:39Z", "ms": 403722699498.2999 }, "end": { "local": "1982-10-17T12:59:39-05:00", "utc": "1982-10-17T17:59:39Z", "ms": 403725579498.2999 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 19:04 on Sat 16 Oct to 18:58 on Sun 17 Oct.", "fact": "1982-10-17T00:04:06Z → 1982-10-17T23:57:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:12–13:00 on the 16th, 12:12–13:00 on the 17th.", "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 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21480 s" }, { "step": "ruling", "text": "Navarātrārambha, Chicago, 1982: Sunday 17 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": "1982-10-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-10-17", "confidence": "determinate" } ], "quote": "In Chicago, Navarātrārambha (Navratri) 1982 falls on Sunday 17 October. Pratipadā runs from 19:04 on Sat 16 Oct to 18:58 on Sun 17 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/vinayaka-chaturthi?on=1982-10-20", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-10-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27339, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-10-19T20:34:56-05:00", "utc": "1982-10-20T01:34:56Z", "ms": 403925696319.8575 }, "end": { "local": "1982-10-20T22:19:26-05:00", "utc": "1982-10-21T03:19:26Z", "ms": 404018365744.6476 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-10-19T20:34:56-05:00", "utc": "1982-10-20T01:34:56Z", "ms": 403925696319.8575 }, "end": { "local": "1982-10-20T22:19:26-05:00", "utc": "1982-10-21T03:19:26Z", "ms": 404018365744.6476 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-10-19", "window": { "start": { "local": "1982-10-19T12:11:17-05:00", "utc": "1982-10-19T17:11:17Z", "ms": 403895476945.14764 }, "end": { "local": "1982-10-19T12:59:17-05:00", "utc": "1982-10-19T17:59:17Z", "ms": 403898356945.14764 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-10-20", "window": { "start": { "local": "1982-10-20T12:11:07-05:00", "utc": "1982-10-20T17:11:07Z", "ms": 403981866598.30414 }, "end": { "local": "1982-10-20T12:59:07-05:00", "utc": "1982-10-20T17:59:07Z", "ms": 403984746598.30414 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:35 on Tue 19 Oct to 22:19 on Wed 20 Oct.", "fact": "1982-10-20T01:34:56Z → 1982-10-21T03:19:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:11–12:59 on the 19th, 12:11–12:59 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27339 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 1982: Wednesday 20 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": "1982-10-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-10-20", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 1982 falls on Wednesday 20 October. Caturthī runs from 20:35 on Tue 19 Oct to 22:19 on Wed 20 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/vinayaka-chaturthi?on=1982-10-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4970, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1982-10-23T03:09:57-05:00", "utc": "1982-10-23T08:09:57Z", "ms": 404208596808.4667 }, "end": { "local": "1982-10-24T05:50:34-05:00", "utc": "1982-10-24T10:50:34Z", "ms": 404304634485.45496 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-10-23T03:09:57-05:00", "utc": "1982-10-23T08:09:57Z", "ms": 404208596808.4667 }, "end": { "local": "1982-10-24T05:50:34-05:00", "utc": "1982-10-24T10:50:34Z", "ms": 404304634485.45496 } }, "kaala": "udaya-1", "days": [ { "local_date": "1982-10-23", "window": { "start": { "local": "1982-10-23T07:12:13-05:00", "utc": "1982-10-23T12:12:13Z", "ms": 404223133092.36523 }, "end": { "local": "1982-10-23T07:55:13-05:00", "utc": "1982-10-23T12:55:13Z", "ms": 404225712605.5623 } }, "covered_min": 43, "window_min": 43, "qualifies": true }, { "local_date": "1982-10-24", "window": { "start": { "local": "1982-10-24T07:13:24-05:00", "utc": "1982-10-24T12:13:24Z", "ms": 404309604134.81366 }, "end": { "local": "1982-10-24T07:56:13-05:00", "utc": "1982-10-24T12:56:13Z", "ms": 404312173147.4518 } }, "covered_min": 0, "window_min": 43, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 03:10 on Sat 23 Oct to 05:51 on Sun 24 Oct.", "fact": "1982-10-23T08:09:57Z → 1982-10-24T10:50:34Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 07:12–07:55 on the 23rd, 07:13–07:56 on the 24th.", "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 43 of 43 minutes on the 23rd and 0 of 43 on the 24th.", "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 4970 s" }, { "step": "ruling", "text": "Durgā Saptamī, Chicago, 1982: Saturday 23 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": "1982-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-10-23", "confidence": "determinate" } ], "quote": "In Chicago, Durgā Saptamī 1982 falls on Saturday 23 October. Saptamī runs from 03:10 on Sat 23 Oct to 05:51 on Sun 24 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13813, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1982-10-24T05:50:34-05:00", "utc": "1982-10-24T10:50:34Z", "ms": 404304634485.45496 }, "end": { "local": "1982-10-25T08:20:11-05:00", "utc": "1982-10-25T13:20:11Z", "ms": 404400011451.6622 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-10-24T05:50:34-05:00", "utc": "1982-10-24T10:50:34Z", "ms": 404304634485.45496 }, "end": { "local": "1982-10-25T08:20:11-05:00", "utc": "1982-10-25T13:20:11Z", "ms": 404400011451.6622 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-10-24", "window": { "start": { "local": "1982-10-24T12:10:32-05:00", "utc": "1982-10-24T17:10:32Z", "ms": 404327431729.59973 }, "end": { "local": "1982-10-24T12:58:32-05:00", "utc": "1982-10-24T17:58:32Z", "ms": 404330311729.59973 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-10-25", "window": { "start": { "local": "1982-10-25T12:10:25-05:00", "utc": "1982-10-25T17:10:25Z", "ms": 404413824711.1675 }, "end": { "local": "1982-10-25T12:58:25-05:00", "utc": "1982-10-25T17:58:25Z", "ms": 404416704711.1675 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 05:51 on Sun 24 Oct to 08:20 on Mon 25 Oct.", "fact": "1982-10-24T10:50:34Z → 1982-10-25T13:20:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:11–12:59 on the 24th, 12:10–12:58 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 13813 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Chicago, 1982: Sunday 24 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": "1982-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-10-24", "confidence": "determinate" } ], "quote": "In Chicago, Mahāṣṭamī (Durga Ashtami) 1982 falls on Sunday 24 October. Aṣṭamī runs from 05:51 on Sun 24 Oct to 08:20 on Mon 25 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-10-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6414, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1982-10-25T08:20:11-05:00", "utc": "1982-10-25T13:20:11Z", "ms": 404400011451.6622 }, "end": { "local": "1982-10-26T10:23:24-05:00", "utc": "1982-10-26T15:23:24Z", "ms": 404493804267.82837 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-10-25T08:20:11-05:00", "utc": "1982-10-25T13:20:11Z", "ms": 404400011451.6622 }, "end": { "local": "1982-10-26T10:23:24-05:00", "utc": "1982-10-26T15:23:24Z", "ms": 404493804267.82837 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-10-25", "window": { "start": { "local": "1982-10-25T12:10:25-05:00", "utc": "1982-10-25T17:10:25Z", "ms": 404413824711.1675 }, "end": { "local": "1982-10-25T12:58:25-05:00", "utc": "1982-10-25T17:58:25Z", "ms": 404416704711.1675 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-10-26", "window": { "start": { "local": "1982-10-26T12:10:18-05:00", "utc": "1982-10-26T17:10:18Z", "ms": 404500218399.817 }, "end": { "local": "1982-10-26T12:58:18-05:00", "utc": "1982-10-26T17:58:18Z", "ms": 404503098399.817 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 08:20 on Mon 25 Oct to 10:23 on Tue 26 Oct.", "fact": "1982-10-25T13:20:11Z → 1982-10-26T15:23:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:10–12:58 on the 25th, 12:10–12:58 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 6414 s" }, { "step": "ruling", "text": "Mahānavamī, Chicago, 1982: Monday 25 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": "1982-10-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-10-25", "confidence": "determinate" } ], "quote": "In Chicago, Mahānavamī 1982 falls on Monday 25 October. Navamī runs from 08:20 on Mon 25 Oct to 10:23 on Tue 26 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-10-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1314, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "1982-10-26T10:23:24-05:00", "utc": "1982-10-26T15:23:24Z", "ms": 404493804267.82837 }, "end": { "local": "1982-10-27T11:48:18-05:00", "utc": "1982-10-27T16:48:18Z", "ms": 404585298328.95386 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-10-26T10:23:24-05:00", "utc": "1982-10-26T15:23:24Z", "ms": 404493804267.82837 }, "end": { "local": "1982-10-27T11:48:18-05:00", "utc": "1982-10-27T16:48:18Z", "ms": 404585298328.95386 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-10-26", "window": { "start": { "local": "1982-10-26T12:10:18-05:00", "utc": "1982-10-26T17:10:18Z", "ms": 404500218399.817 }, "end": { "local": "1982-10-26T12:58:18-05:00", "utc": "1982-10-26T17:58:18Z", "ms": 404503098399.817 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-10-27", "window": { "start": { "local": "1982-10-27T12:10:13-05:00", "utc": "1982-10-27T17:10:13Z", "ms": 404586612809.30756 }, "end": { "local": "1982-10-27T12:58:13-05:00", "utc": "1982-10-27T17:58:13Z", "ms": 404589492809.30756 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 10:23 on Tue 26 Oct to 11:48 on Wed 27 Oct.", "fact": "1982-10-26T15:23:24Z → 1982-10-27T16:48:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:10–12:58 on the 26th, 12:10–12:58 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Daśamī touches Śravaṇa in the day time on neither day, so the rest of the rule applies. Daśamī must be present during madhyāhna. It covers 48 of 48 minutes on the 26th and 0 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1314 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Chicago, 1982: Tuesday 26 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vijaya-dashami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 10 Vijaya dasami (In Bengal it is observed as paraviddha, covering one muhurta from sunrise. In other places, if it touches Sravana naksatra in the day time it is observed on that day), Sarasvati visarjana (to be observed in naksatra Sravana), Dasahara." } ], "not_evaluated": "The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day", "conjunction": { "nakshatra": "Śravaṇa", "kaala": "daytime" } }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-10-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-10-26", "confidence": "boundary" } ], "quote": "In Chicago, Vijayā Daśamī (Dussehra) 1982 falls on Tuesday 26 October. Daśamī touches Śravaṇa in the day time on neither day, so madhyāhna decides. Daśamī runs from 10:23 on Tue 26 Oct to 11:48 on Wed 27 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-10-28", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-10-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16279, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-10-27T11:48:18-05:00", "utc": "1982-10-27T16:48:18Z", "ms": 404585298328.95386 }, "end": { "local": "1982-10-28T12:27:56-05:00", "utc": "1982-10-28T17:27:56Z", "ms": 404674075864.0946 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-10-27T11:48:18-05:00", "utc": "1982-10-27T16:48:18Z", "ms": 404585298328.95386 }, "end": { "local": "1982-10-28T12:27:56-05:00", "utc": "1982-10-28T17:27:56Z", "ms": 404674075864.0946 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-10-27", "window": { "start": { "local": "1982-10-27T07:16:59-05:00", "utc": "1982-10-27T12:16:59Z", "ms": 404569018868.2329 }, "end": { "local": "1982-10-27T07:16:59-05:00", "utc": "1982-10-27T12:16:59Z", "ms": 404569018868.2329 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-10-28", "window": { "start": { "local": "1982-10-28T07:18:11-05:00", "utc": "1982-10-28T12:18:11Z", "ms": 404655490949.07886 }, "end": { "local": "1982-10-28T07:18:11-05:00", "utc": "1982-10-28T12:18:11Z", "ms": 404655490949.07886 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:48 on Wed 27 Oct to 12:28 on Thu 28 Oct.", "fact": "1982-10-27T16:48:18Z → 1982-10-28T17:27:56Z" }, { "step": "kaala", "text": "Sunrise is at 07:17 on the 27th and 07:18 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 27th and is on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16279 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Chicago, 1982: Thursday 28 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": "1982-10-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-10-28", "confidence": "determinate" } ], "quote": "In Chicago, Pāśāṅkuśā Ekādaśī 1982 falls on Thursday 28 October. Ekādaśī runs from 11:48 on Wed 27 Oct to 12:28 on Thu 28 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-10-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-10-29", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19696, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-10-29T12:20:29-05:00", "utc": "1982-10-29T17:20:29Z", "ms": 404760028884.08026 }, "end": { "local": "1982-10-30T11:28:34-05:00", "utc": "1982-10-30T16:28:34Z", "ms": 404843314484.0697 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1982-10-29T12:20:29-05:00", "utc": "1982-10-29T17:20:29Z", "ms": 404760028884.08026 }, "end": { "local": "1982-10-30T11:28:34-05:00", "utc": "1982-10-30T16:28:34Z", "ms": 404843314484.0697 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-10-29", "window": { "start": { "local": "1982-10-29T17:48:44-05:00", "utc": "1982-10-29T22:48:44Z", "ms": 404779724427.89526 }, "end": { "local": "1982-10-29T19:36:59-05:00", "utc": "1982-10-30T00:36:59Z", "ms": 404786219277.9526 } }, "covered_min": 108, "window_min": 108, "qualifies": true }, { "local_date": "1982-10-30", "window": { "start": { "local": "1982-10-30T17:47:25-05:00", "utc": "1982-10-30T22:47:25Z", "ms": 404866045199.34784 }, "end": { "local": "1982-10-30T19:36:00-05:00", "utc": "1982-10-31T00:36:00Z", "ms": 404872560313.4984 } }, "covered_min": 0, "window_min": 109, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:20 on Fri 29 Oct to 11:29 on Sat 30 Oct.", "fact": "1982-10-29T17:20:29Z → 1982-10-30T16:28:34Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:49–19:37 on the 29th, 17:47–19:36 on the 30th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 108 of 108 minutes on the 29th and 0 of 109 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19696 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 1982: Friday 29 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": "1982-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-10-29", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 1982 falls on Friday 29 October. Trayodaśī runs from 12:20 on Fri 29 Oct to 11:29 on Sat 30 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-10-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3938, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-11-03T23:13:39-06:00", "utc": "1982-11-04T05:13:39Z", "ms": 405234818503.8666 }, "end": { "local": "1982-11-04T20:33:02-06:00", "utc": "1982-11-05T02:33:02Z", "ms": 405311582481.4045 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-03T23:13:39-06:00", "utc": "1982-11-04T05:13:39Z", "ms": 405234818503.8666 }, "end": { "local": "1982-11-04T20:33:02-06:00", "utc": "1982-11-05T02:33:02Z", "ms": 405311582481.4045 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-11-03", "window": { "start": { "local": "1982-11-03T18:36:46-06:00", "utc": "1982-11-04T00:36:46Z", "ms": 405218206337.11615 }, "end": { "local": "1982-11-03T18:36:46-06:00", "utc": "1982-11-04T00:36:46Z", "ms": 405218206337.11615 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-11-04", "window": { "start": { "local": "1982-11-04T19:27:25-06:00", "utc": "1982-11-05T01:27:25Z", "ms": 405307644662.99866 }, "end": { "local": "1982-11-04T19:27:25-06:00", "utc": "1982-11-05T01:27:25Z", "ms": 405307644662.99866 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:14 on Wed 3 Nov to 20:33 on Thu 4 Nov.", "fact": "1982-11-04T05:13:39Z → 1982-11-05T02:33:02Z" }, { "step": "kaala", "text": "Moonrise is at 18:37 on the 3rd and 19:27 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 3rd and is on the 4th.", "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 3938 s" }, { "step": "ruling", "text": "Karaka Caturthī, Chicago, 1982: Thursday 4 November.", "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": "1982-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-04", "confidence": "determinate" } ], "quote": "In Chicago, Karaka Caturthī (Karwa Chauth) 1982 falls on Thursday 4 November. Caturthī runs from 23:14 on Wed 3 Nov to 20:33 on Thu 4 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/sankashta-chaturthi?on=1982-11-04", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3938, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-11-03T23:13:39-06:00", "utc": "1982-11-04T05:13:39Z", "ms": 405234818503.8666 }, "end": { "local": "1982-11-04T20:33:02-06:00", "utc": "1982-11-05T02:33:02Z", "ms": 405311582481.4045 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-03T23:13:39-06:00", "utc": "1982-11-04T05:13:39Z", "ms": 405234818503.8666 }, "end": { "local": "1982-11-04T20:33:02-06:00", "utc": "1982-11-05T02:33:02Z", "ms": 405311582481.4045 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-11-03", "window": { "start": { "local": "1982-11-03T18:36:46-06:00", "utc": "1982-11-04T00:36:46Z", "ms": 405218206337.11615 }, "end": { "local": "1982-11-03T18:36:46-06:00", "utc": "1982-11-04T00:36:46Z", "ms": 405218206337.11615 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-11-04", "window": { "start": { "local": "1982-11-04T19:27:25-06:00", "utc": "1982-11-05T01:27:25Z", "ms": 405307644662.99866 }, "end": { "local": "1982-11-04T19:27:25-06:00", "utc": "1982-11-05T01:27:25Z", "ms": 405307644662.99866 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:14 on Wed 3 Nov to 20:33 on Thu 4 Nov.", "fact": "1982-11-04T05:13:39Z → 1982-11-05T02:33:02Z" }, { "step": "kaala", "text": "Moonrise is at 18:37 on the 3rd and 19:27 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 3rd and is on the 4th.", "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 3938 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 1982: Thursday 4 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-04", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 1982 falls on Thursday 4 November. Caturthī runs from 23:14 on Wed 3 Nov to 20:33 on Thu 4 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/sankashta-chaturthi?on=1982-11-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32896, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1982-11-07T13:33:59-06:00", "utc": "1982-11-07T19:33:59Z", "ms": 405545638984.17053 }, "end": { "local": "1982-11-08T11:46:01-06:00", "utc": "1982-11-08T17:46:01Z", "ms": 405625560537.1927 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-07T13:33:59-06:00", "utc": "1982-11-07T19:33:59Z", "ms": 405545638984.17053 }, "end": { "local": "1982-11-08T11:46:01-06:00", "utc": "1982-11-08T17:46:01Z", "ms": 405625560537.1927 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-11-07", "window": { "start": { "local": "1982-11-07T22:42:15-06:00", "utc": "1982-11-08T04:42:15Z", "ms": 405578535360.5753 }, "end": { "local": "1982-11-07T22:42:15-06:00", "utc": "1982-11-08T04:42:15Z", "ms": 405578535360.5753 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-11-08", "window": { "start": { "local": "1982-11-08T23:52:59-06:00", "utc": "1982-11-09T05:52:59Z", "ms": 405669179409.11316 }, "end": { "local": "1982-11-08T23:52:59-06:00", "utc": "1982-11-09T05:52:59Z", "ms": 405669179409.11316 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 13:34 on Sun 7 Nov to 11:46 on Mon 8 Nov.", "fact": "1982-11-07T19:33:59Z → 1982-11-08T17:46:01Z" }, { "step": "kaala", "text": "Moonrise is at 22:42 on the 7th and 23:53 on the 8th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 7th and is not on the 8th.", "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 32896 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Chicago, 1982: Sunday 7 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ahoyi-ashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Ahoyi astami (Gujerat) (current at moonrise), Karastami (Maharashtra). If occurs on two successive days, it is to be observed on the second day." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-11-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-07", "confidence": "determinate" } ], "quote": "In Chicago, Ahoyī Aṣṭamī 1982 falls on Sunday 7 November. Aṣṭamī runs from 13:34 on Sun 7 Nov to 11:46 on Mon 8 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-11-11", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6203, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-11-10T09:07:17-06:00", "utc": "1982-11-10T15:07:17Z", "ms": 405788837038.4694 }, "end": { "local": "1982-11-11T08:18:41-06:00", "utc": "1982-11-11T14:18:41Z", "ms": 405872321132.9721 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-10T09:07:17-06:00", "utc": "1982-11-10T15:07:17Z", "ms": 405788837038.4694 }, "end": { "local": "1982-11-11T08:18:41-06:00", "utc": "1982-11-11T14:18:41Z", "ms": 405872321132.9721 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-11-10", "window": { "start": { "local": "1982-11-10T06:34:05-06:00", "utc": "1982-11-10T12:34:05Z", "ms": 405779644646.5002 }, "end": { "local": "1982-11-10T06:34:05-06:00", "utc": "1982-11-10T12:34:05Z", "ms": 405779644646.5002 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-11-11", "window": { "start": { "local": "1982-11-11T06:35:19-06:00", "utc": "1982-11-11T12:35:19Z", "ms": 405866118624.8475 }, "end": { "local": "1982-11-11T06:35:19-06:00", "utc": "1982-11-11T12:35:19Z", "ms": 405866118624.8475 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:07 on Wed 10 Nov to 08:19 on Thu 11 Nov.", "fact": "1982-11-10T15:07:17Z → 1982-11-11T14:18:41Z" }, { "step": "kaala", "text": "Sunrise is at 06:34 on the 10th and 06:35 on the 11th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 10th and is on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6203 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Chicago, 1982: Thursday 11 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": "1982-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-11", "confidence": "determinate" } ], "quote": "In Chicago, Ramā Ekādaśī 1982 falls on Thursday 11 November. Ekādaśī runs from 09:07 on Wed 10 Nov to 08:19 on Thu 11 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-11-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29689, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1982-11-11T08:18:41-06:00", "utc": "1982-11-11T14:18:41Z", "ms": 405872321132.9721 }, "end": { "local": "1982-11-12T07:52:31-06:00", "utc": "1982-11-12T13:52:31Z", "ms": 405957151418.549 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-11T08:18:41-06:00", "utc": "1982-11-11T14:18:41Z", "ms": 405872321132.9721 }, "end": { "local": "1982-11-12T07:52:31-06:00", "utc": "1982-11-12T13:52:31Z", "ms": 405957151418.549 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-11-11", "window": { "start": { "local": "1982-11-11T16:33:30-06:00", "utc": "1982-11-11T22:33:30Z", "ms": 405902010257.79266 }, "end": { "local": "1982-11-11T18:25:55-06:00", "utc": "1982-11-12T00:25:55Z", "ms": 405908754562.7295 } }, "covered_min": 112, "window_min": 112, "qualifies": true }, { "local_date": "1982-11-12", "window": { "start": { "local": "1982-11-12T16:32:31-06:00", "utc": "1982-11-12T22:32:31Z", "ms": 405988351494.09186 }, "end": { "local": "1982-11-12T18:25:13-06:00", "utc": "1982-11-13T00:25:13Z", "ms": 405995113477.1068 } }, "covered_min": 0, "window_min": 113, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 08:19 on Thu 11 Nov to 07:53 on Fri 12 Nov.", "fact": "1982-11-11T14:18:41Z → 1982-11-12T13:52:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:34–18:26 on the 11th, 16:33–18:25 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 112 of 112 minutes on the 11th and 0 of 113 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 29689 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Chicago, 1982: Thursday 11 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-11", "confidence": "determinate" } ], "quote": "In Chicago, Govatsa Dvādaśī (Vasu Baras) 1982 falls on Thursday 11 November. Dvādaśī runs from 08:19 on Thu 11 Nov to 07:53 on Fri 12 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31200, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-11-12T07:52:31-06:00", "utc": "1982-11-12T13:52:31Z", "ms": 405957151418.549 }, "end": { "local": "1982-11-13T07:50:50-06:00", "utc": "1982-11-13T13:50:50Z", "ms": 406043449856.8891 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-12T07:52:31-06:00", "utc": "1982-11-12T13:52:31Z", "ms": 405957151418.549 }, "end": { "local": "1982-11-13T07:50:50-06:00", "utc": "1982-11-13T13:50:50Z", "ms": 406043449856.8891 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-11-12", "window": { "start": { "local": "1982-11-12T16:32:31-06:00", "utc": "1982-11-12T22:32:31Z", "ms": 405988351494.09186 }, "end": { "local": "1982-11-12T18:25:13-06:00", "utc": "1982-11-13T00:25:13Z", "ms": 405995113477.1068 } }, "covered_min": 113, "window_min": 113, "qualifies": true }, { "local_date": "1982-11-13", "window": { "start": { "local": "1982-11-13T16:31:35-06:00", "utc": "1982-11-13T22:31:35Z", "ms": 406074694561.3953 }, "end": { "local": "1982-11-13T18:24:34-06:00", "utc": "1982-11-14T00:24:34Z", "ms": 406081473959.7013 } }, "covered_min": 0, "window_min": 113, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:53 on Fri 12 Nov to 07:51 on Sat 13 Nov.", "fact": "1982-11-12T13:52:31Z → 1982-11-13T13:50:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:33–18:25 on the 12th, 16:32–18:25 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 113 of 113 minutes on the 12th and 0 of 113 on the 13th.", "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 31200 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Chicago, 1982: Friday 12 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dipadana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 13 Yama dipadana (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-12", "confidence": "determinate" } ], "quote": "In Chicago, Yama Dīpadāna 1982 falls on Friday 12 November. Trayodaśī runs from 07:53 on Fri 12 Nov to 07:51 on Sat 13 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/pradosha-vrata?on=1982-11-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31200, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-11-12T07:52:31-06:00", "utc": "1982-11-12T13:52:31Z", "ms": 405957151418.549 }, "end": { "local": "1982-11-13T07:50:50-06:00", "utc": "1982-11-13T13:50:50Z", "ms": 406043449856.8891 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-12T07:52:31-06:00", "utc": "1982-11-12T13:52:31Z", "ms": 405957151418.549 }, "end": { "local": "1982-11-13T07:50:50-06:00", "utc": "1982-11-13T13:50:50Z", "ms": 406043449856.8891 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-11-12", "window": { "start": { "local": "1982-11-12T16:32:31-06:00", "utc": "1982-11-12T22:32:31Z", "ms": 405988351494.09186 }, "end": { "local": "1982-11-12T18:25:13-06:00", "utc": "1982-11-13T00:25:13Z", "ms": 405995113477.1068 } }, "covered_min": 113, "window_min": 113, "qualifies": true }, { "local_date": "1982-11-13", "window": { "start": { "local": "1982-11-13T16:31:35-06:00", "utc": "1982-11-13T22:31:35Z", "ms": 406074694561.3953 }, "end": { "local": "1982-11-13T18:24:34-06:00", "utc": "1982-11-14T00:24:34Z", "ms": 406081473959.7013 } }, "covered_min": 0, "window_min": 113, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:53 on Fri 12 Nov to 07:51 on Sat 13 Nov.", "fact": "1982-11-12T13:52:31Z → 1982-11-13T13:50:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:33–18:25 on the 12th, 16:32–18:25 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 113 of 113 minutes on the 12th and 0 of 113 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31200 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 1982: Friday 12 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": "1982-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-12", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 1982 falls on Friday 12 November. Trayodaśī runs from 07:53 on Fri 12 Nov to 07:51 on Sat 13 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-11-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/shivaratri?on=1982-11-13", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28301, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-11-13T07:50:50-06:00", "utc": "1982-11-13T13:50:50Z", "ms": 406043449856.8891 }, "end": { "local": "1982-11-14T08:15:55-06:00", "utc": "1982-11-14T14:15:55Z", "ms": 406131355280.3765 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-13T07:50:50-06:00", "utc": "1982-11-13T13:50:50Z", "ms": 406043449856.8891 }, "end": { "local": "1982-11-14T08:15:55-06:00", "utc": "1982-11-14T14:15:55Z", "ms": 406131355280.3765 } }, "kaala": "nishita", "days": [ { "local_date": "1982-11-12", "window": { "start": { "local": "1982-11-12T23:11:09-06:00", "utc": "1982-11-13T05:11:09Z", "ms": 406012268930.3979 }, "end": { "local": "1982-11-12T23:59:09-06:00", "utc": "1982-11-13T05:59:09Z", "ms": 406015148930.3979 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-11-13", "window": { "start": { "local": "1982-11-13T23:11:17-06:00", "utc": "1982-11-14T05:11:17Z", "ms": 406098677305.0426 }, "end": { "local": "1982-11-13T23:59:17-06:00", "utc": "1982-11-14T05:59:17Z", "ms": 406101557305.0426 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 07:51 on Sat 13 Nov to 08:16 on Sun 14 Nov.", "fact": "1982-11-13T13:50:50Z → 1982-11-14T14:15:55Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:11–23:59 on the 12th, 23:11–23:59 on the 13th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28301 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 1982: Saturday 13 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": "1982-11-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-13", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 1982 falls on Saturday 13 November. Caturdaśī runs from 07:51 on Sat 13 Nov to 08:16 on Sun 14 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/shivaratri?on=1982-11-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4383, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-11-13T07:50:50-06:00", "utc": "1982-11-13T13:50:50Z", "ms": 406043449856.8891 }, "end": { "local": "1982-11-14T08:15:55-06:00", "utc": "1982-11-14T14:15:55Z", "ms": 406131355280.3765 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-13T07:50:50-06:00", "utc": "1982-11-13T13:50:50Z", "ms": 406043449856.8891 }, "end": { "local": "1982-11-14T08:15:55-06:00", "utc": "1982-11-14T14:15:55Z", "ms": 406131355280.3765 } }, "kaala": "arunodaya", "days": [ { "local_date": "1982-11-13", "window": { "start": { "local": "1982-11-13T04:45:04-06:00", "utc": "1982-11-13T10:45:04Z", "ms": 406032304383.68896 }, "end": { "local": "1982-11-13T06:37:46-06:00", "utc": "1982-11-13T12:37:46Z", "ms": 406039066366.7039 } }, "covered_min": 0, "window_min": 113, "qualifies": false }, { "local_date": "1982-11-14", "window": { "start": { "local": "1982-11-14T04:46:01-06:00", "utc": "1982-11-14T10:46:01Z", "ms": 406118760650.3839 }, "end": { "local": "1982-11-14T06:39:00-06:00", "utc": "1982-11-14T12:39:00Z", "ms": 406125540048.6899 } }, "covered_min": 113, "window_min": 113, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 07:51 on Sat 13 Nov to 08:16 on Sun 14 Nov.", "fact": "1982-11-13T13:50:50Z → 1982-11-14T14:15:55Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:45–06:38 on the 13th, 04:46–06:39 on the 14th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 0 of 113 minutes on the 13th and 113 of 113 on the 14th.", "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 4383 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Chicago, 1982: Sunday 14 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naraka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Naraka caturdasi (covering a period of 4 ghatikas before sunrise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "arunodaya", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-14", "confidence": "determinate" } ], "quote": "In Chicago, Naraka Caturdaśī (Choti Diwali) 1982 falls on Sunday 14 November. Caturdaśī runs from 07:51 on Sat 13 Nov to 08:16 on Sun 14 Nov and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26392, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1982-11-14T08:15:55-06:00", "utc": "1982-11-14T14:15:55Z", "ms": 406131355280.3765 }, "end": { "local": "1982-11-15T09:09:54-06:00", "utc": "1982-11-15T15:09:54Z", "ms": 406220993834.77094 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-14T08:15:55-06:00", "utc": "1982-11-14T14:15:55Z", "ms": 406131355280.3765 }, "end": { "local": "1982-11-15T09:09:54-06:00", "utc": "1982-11-15T15:09:54Z", "ms": 406220993834.77094 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-11-14", "window": { "start": { "local": "1982-11-14T16:30:39-06:00", "utc": "1982-11-14T22:30:39Z", "ms": 406161039492.4516 }, "end": { "local": "1982-11-14T18:23:56-06:00", "utc": "1982-11-15T00:23:56Z", "ms": 406167836033.0628 } }, "covered_min": 113, "window_min": 113, "qualifies": true }, { "local_date": "1982-11-15", "window": { "start": { "local": "1982-11-15T16:29:46-06:00", "utc": "1982-11-15T22:29:46Z", "ms": 406247386319.4728 }, "end": { "local": "1982-11-15T18:23:20-06:00", "utc": "1982-11-16T00:23:20Z", "ms": 406254199719.044 } }, "covered_min": 0, "window_min": 114, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 08:16 on Sun 14 Nov to 09:10 on Mon 15 Nov.", "fact": "1982-11-14T14:15:55Z → 1982-11-15T15:09:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:31–18:24 on the 14th, 16:30–18:23 on the 15th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 113 of 113 minutes on the 14th and 0 of 114 on the 15th.", "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 26392 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Chicago, 1982: Sunday 14 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "diwali-lakshmi-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-14", "confidence": "determinate" } ], "quote": "In Chicago, Lakṣmī Pūjā (Diwali) 1982 falls on Sunday 14 November. Amāvasyā runs from 08:16 on Sun 14 Nov to 09:10 on Mon 15 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29798, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1982-11-14T08:15:55-06:00", "utc": "1982-11-14T14:15:55Z", "ms": 406131355280.3765 }, "end": { "local": "1982-11-15T09:09:54-06:00", "utc": "1982-11-15T15:09:54Z", "ms": 406220993834.77094 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-14T08:15:55-06:00", "utc": "1982-11-14T14:15:55Z", "ms": 406131355280.3765 }, "end": { "local": "1982-11-15T09:09:54-06:00", "utc": "1982-11-15T15:09:54Z", "ms": 406220993834.77094 } }, "kaala": "nishita", "days": [ { "local_date": "1982-11-13", "window": { "start": { "local": "1982-11-13T23:11:17-06:00", "utc": "1982-11-14T05:11:17Z", "ms": 406098677305.0426 }, "end": { "local": "1982-11-13T23:59:17-06:00", "utc": "1982-11-14T05:59:17Z", "ms": 406101557305.0426 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-11-14", "window": { "start": { "local": "1982-11-14T23:11:27-06:00", "utc": "1982-11-15T05:11:27Z", "ms": 406185086519.7435 }, "end": { "local": "1982-11-14T23:59:27-06:00", "utc": "1982-11-15T05:59:27Z", "ms": 406187966519.7435 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 08:16 on Sun 14 Nov to 09:10 on Mon 15 Nov.", "fact": "1982-11-14T14:15:55Z → 1982-11-15T15:09:54Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:11–23:59 on the 13th, 23:11–23:59 on the 14th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 0 of 48 minutes on the 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 night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29798 s" }, { "step": "ruling", "text": "Kālī Pūjā, Chicago, 1982: Sunday 14 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-14", "confidence": "determinate" } ], "quote": "In Chicago, Kālī Pūjā 1982 falls on Sunday 14 November. Amāvasyā runs from 08:16 on Sun 14 Nov to 09:10 on Mon 15 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2237, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1982-11-15T09:09:54-06:00", "utc": "1982-11-15T15:09:54Z", "ms": 406220993834.77094 }, "end": { "local": "1982-11-16T10:33:54-06:00", "utc": "1982-11-16T16:33:54Z", "ms": 406312433706.66034 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-15T09:09:54-06:00", "utc": "1982-11-15T15:09:54Z", "ms": 406220993834.77094 }, "end": { "local": "1982-11-16T10:33:54-06:00", "utc": "1982-11-16T16:33:54Z", "ms": 406312433706.66034 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-11-15", "window": { "start": { "local": "1982-11-15T11:11:00-06:00", "utc": "1982-11-15T17:11:00Z", "ms": 406228259933.25415 }, "end": { "local": "1982-11-15T11:59:00-06:00", "utc": "1982-11-15T17:59:00Z", "ms": 406231139933.25415 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-11-16", "window": { "start": { "local": "1982-11-16T11:11:11-06:00", "utc": "1982-11-16T17:11:11Z", "ms": 406314670945.2561 }, "end": { "local": "1982-11-16T11:59:11-06:00", "utc": "1982-11-16T17:59:11Z", "ms": 406317550945.2561 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 09:10 on Mon 15 Nov to 10:34 on Tue 16 Nov.", "fact": "1982-11-15T15:09:54Z → 1982-11-16T16:33:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:11–11:59 on the 15th, 11:11–11:59 on the 16th.", "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 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 2237 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Chicago, 1982: Monday 15 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": "1982-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-15", "confidence": "boundary" } ], "quote": "In Chicago, Govardhana Pūjā 1982 falls on Monday 15 November. Pratipadā runs from 09:10 on Mon 15 Nov to 10:34 on Tue 16 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21301, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1982-11-15T09:09:54-06:00", "utc": "1982-11-15T15:09:54Z", "ms": 406220993834.77094 }, "end": { "local": "1982-11-16T10:33:54-06:00", "utc": "1982-11-16T16:33:54Z", "ms": 406312433706.66034 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-15T09:09:54-06:00", "utc": "1982-11-15T15:09:54Z", "ms": 406220993834.77094 }, "end": { "local": "1982-11-16T10:33:54-06:00", "utc": "1982-11-16T16:33:54Z", "ms": 406312433706.66034 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-11-15", "window": { "start": { "local": "1982-11-15T16:29:46-06:00", "utc": "1982-11-15T22:29:46Z", "ms": 406247386319.4728 }, "end": { "local": "1982-11-15T18:23:20-06:00", "utc": "1982-11-16T00:23:20Z", "ms": 406254199719.044 } }, "covered_min": 114, "window_min": 114, "qualifies": true }, { "local_date": "1982-11-16", "window": { "start": { "local": "1982-11-16T16:28:55-06:00", "utc": "1982-11-16T22:28:55Z", "ms": 406333735074.25543 }, "end": { "local": "1982-11-16T18:22:45-06:00", "utc": "1982-11-17T00:22:45Z", "ms": 406340565038.93225 } }, "covered_min": 0, "window_min": 114, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 09:10 on Mon 15 Nov to 10:34 on Tue 16 Nov.", "fact": "1982-11-15T15:09:54Z → 1982-11-16T16:33:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:30–18:23 on the 15th, 16:29–18:23 on the 16th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 114 of 114 minutes on the 15th and 0 of 114 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21301 s" }, { "step": "ruling", "text": "Bali Pūjā, Chicago, 1982: Monday 15 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-15", "confidence": "determinate" } ], "quote": "In Chicago, Bali Pūjā 1982 falls on Monday 15 November. Pratipadā runs from 09:10 on Mon 15 Nov to 10:34 on Tue 16 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1666, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1982-11-16T10:33:54-06:00", "utc": "1982-11-16T16:33:54Z", "ms": 406312433706.66034 }, "end": { "local": "1982-11-17T12:27:09-06:00", "utc": "1982-11-17T18:27:09Z", "ms": 406405629133.4283 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-16T10:33:54-06:00", "utc": "1982-11-16T16:33:54Z", "ms": 406312433706.66034 }, "end": { "local": "1982-11-17T12:27:09-06:00", "utc": "1982-11-17T18:27:09Z", "ms": 406405629133.4283 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-11-16", "window": { "start": { "local": "1982-11-16T11:11:11-06:00", "utc": "1982-11-16T17:11:11Z", "ms": 406314670945.2561 }, "end": { "local": "1982-11-16T11:59:11-06:00", "utc": "1982-11-16T17:59:11Z", "ms": 406317550945.2561 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-11-17", "window": { "start": { "local": "1982-11-17T11:11:23-06:00", "utc": "1982-11-17T17:11:23Z", "ms": 406401082798.78937 }, "end": { "local": "1982-11-17T11:59:23-06:00", "utc": "1982-11-17T17:59:23Z", "ms": 406403962798.78937 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 10:34 on Tue 16 Nov to 12:27 on Wed 17 Nov.", "fact": "1982-11-16T16:33:54Z → 1982-11-17T18:27:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:11–11:59 on the 16th, 11:11–11:59 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 1666 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Chicago, 1982: Tuesday 16 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": "1982-11-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-16", "confidence": "boundary" } ], "quote": "In Chicago, Yama Dvitīyā (Bhai Dooj) 1982 falls on Tuesday 16 November. Dvitīyā runs from 10:34 on Tue 16 Nov to 12:27 on Wed 17 Nov and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-16", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2197, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1982-11-15T09:09:54-06:00", "utc": "1982-11-15T15:09:54Z", "ms": 406220993834.77094 }, "end": { "local": "1982-11-16T10:33:54-06:00", "utc": "1982-11-16T16:33:54Z", "ms": 406312433706.66034 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-15T09:09:54-06:00", "utc": "1982-11-15T15:09:54Z", "ms": 406220993834.77094 }, "end": { "local": "1982-11-16T10:33:54-06:00", "utc": "1982-11-16T16:33:54Z", "ms": 406312433706.66034 } }, "kaala": "purvahna", "days": [ { "local_date": "1982-11-15", "window": { "start": { "local": "1982-11-15T06:40:14-06:00", "utc": "1982-11-15T12:40:14Z", "ms": 406212013547.03546 }, "end": { "local": "1982-11-15T09:56:44-06:00", "utc": "1982-11-15T15:56:44Z", "ms": 406223804471.1812 } }, "covered_min": 47, "window_min": 197, "qualifies": true }, { "local_date": "1982-11-16", "window": { "start": { "local": "1982-11-16T06:41:27-06:00", "utc": "1982-11-16T12:41:27Z", "ms": 406298486816.25684 }, "end": { "local": "1982-11-16T09:57:16-06:00", "utc": "1982-11-16T15:57:16Z", "ms": 406310236235.5897 } }, "covered_min": 196, "window_min": 196, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 09:10 on Mon 15 Nov to 10:34 on Tue 16 Nov.", "fact": "1982-11-15T15:09:54Z → 1982-11-16T16:33:54Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:40–09:57 on the 15th, 06:41–09:57 on the 16th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 47 of 197 minutes on the 15th and 196 of 196 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both forenoons qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 2197 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Chicago, 1982: Tuesday 16 November.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "1982-11-16", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-16", "confidence": "boundary" } ], "quote": "In Chicago, Dyūta Pratipad 1982 falls on Tuesday 16 November. Pratipadā runs from 09:10 on Mon 15 Nov to 10:34 on Tue 16 Nov and covers all of pūrvāhṇa that forenoon. It also reaches the previous forenoon for 47 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/chicago/festivals/1982/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": "/chicago/festivals/1982/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9988, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-11-18T14:46:04-06:00", "utc": "1982-11-18T20:46:04Z", "ms": 406500363766.80286 }, "end": { "local": "1982-11-19T17:23:30-06:00", "utc": "1982-11-19T23:23:30Z", "ms": 406596209890.914 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-18T14:46:04-06:00", "utc": "1982-11-18T20:46:04Z", "ms": 406500363766.80286 }, "end": { "local": "1982-11-19T17:23:30-06:00", "utc": "1982-11-19T23:23:30Z", "ms": 406596209890.914 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-11-18", "window": { "start": { "local": "1982-11-18T11:11:35-06:00", "utc": "1982-11-18T17:11:35Z", "ms": 406487495485.22644 }, "end": { "local": "1982-11-18T11:59:35-06:00", "utc": "1982-11-18T17:59:35Z", "ms": 406490375485.22644 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-11-19", "window": { "start": { "local": "1982-11-19T11:11:49-06:00", "utc": "1982-11-19T17:11:49Z", "ms": 406573908995.16907 }, "end": { "local": "1982-11-19T11:59:49-06:00", "utc": "1982-11-19T17:59:49Z", "ms": 406576788995.16907 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:46 on Thu 18 Nov to 17:23 on Fri 19 Nov.", "fact": "1982-11-18T20:46:04Z → 1982-11-19T23:23:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:12–12:00 on the 18th, 11:12–12:00 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9988 s" }, { "step": "ruling", "text": "Nāga Caturthī, Chicago, 1982: Friday 19 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Naga caturthi (paraviddha and madhyahnavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-11-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-19", "confidence": "determinate" } ], "quote": "In Chicago, Nāga Caturthī 1982 falls on Friday 19 November. Caturthī runs from 14:46 on Thu 18 Nov to 17:23 on Fri 19 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/vinayaka-chaturthi?on=1982-11-19", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9988, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-11-18T14:46:04-06:00", "utc": "1982-11-18T20:46:04Z", "ms": 406500363766.80286 }, "end": { "local": "1982-11-19T17:23:30-06:00", "utc": "1982-11-19T23:23:30Z", "ms": 406596209890.914 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-18T14:46:04-06:00", "utc": "1982-11-18T20:46:04Z", "ms": 406500363766.80286 }, "end": { "local": "1982-11-19T17:23:30-06:00", "utc": "1982-11-19T23:23:30Z", "ms": 406596209890.914 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-11-18", "window": { "start": { "local": "1982-11-18T11:11:35-06:00", "utc": "1982-11-18T17:11:35Z", "ms": 406487495485.22644 }, "end": { "local": "1982-11-18T11:59:35-06:00", "utc": "1982-11-18T17:59:35Z", "ms": 406490375485.22644 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-11-19", "window": { "start": { "local": "1982-11-19T11:11:49-06:00", "utc": "1982-11-19T17:11:49Z", "ms": 406573908995.16907 }, "end": { "local": "1982-11-19T11:59:49-06:00", "utc": "1982-11-19T17:59:49Z", "ms": 406576788995.16907 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:46 on Thu 18 Nov to 17:23 on Fri 19 Nov.", "fact": "1982-11-18T20:46:04Z → 1982-11-19T23:23:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:12–12:00 on the 18th, 11:12–12:00 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9988 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 1982: Friday 19 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-11-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-19", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 1982 falls on Friday 19 November. Caturthī runs from 14:46 on Thu 18 Nov to 17:23 on Fri 19 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/vinayaka-chaturthi?on=1982-11-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29321, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1982-11-20T20:08:44-06:00", "utc": "1982-11-21T02:08:44Z", "ms": 406692524399.25323 }, "end": { "local": "1982-11-21T22:48:19-06:00", "utc": "1982-11-22T04:48:19Z", "ms": 406788498518.0553 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-20T20:08:44-06:00", "utc": "1982-11-21T02:08:44Z", "ms": 406692524399.25323 }, "end": { "local": "1982-11-21T22:48:19-06:00", "utc": "1982-11-22T04:48:19Z", "ms": 406788498518.0553 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-11-20", "window": { "start": { "local": "1982-11-20T11:12:03-06:00", "utc": "1982-11-20T17:12:03Z", "ms": 406660323318.484 }, "end": { "local": "1982-11-20T12:00:03-06:00", "utc": "1982-11-20T18:00:03Z", "ms": 406663203318.484 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-11-21", "window": { "start": { "local": "1982-11-21T11:12:18-06:00", "utc": "1982-11-21T17:12:18Z", "ms": 406746738444.31934 }, "end": { "local": "1982-11-21T12:00:18-06:00", "utc": "1982-11-21T18:00:18Z", "ms": 406749618444.31934 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 20:09 on Sat 20 Nov to 22:48 on Sun 21 Nov.", "fact": "1982-11-21T02:08:44Z → 1982-11-22T04:48:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:12–12:00 on the 20th, 11:12–12:00 on the 21st.", "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 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29321 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Chicago, 1982: Sunday 21 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": "1982-11-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-21", "confidence": "determinate" } ], "quote": "In Chicago, Sūrya Ṣaṣṭhī (Chhath) 1982 falls on Sunday 21 November. Ṣaṣṭhī runs from 20:09 on Sat 20 Nov to 22:48 on Sun 21 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29975, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1982-11-23T01:07:41-06:00", "utc": "1982-11-23T07:07:41Z", "ms": 406883261491.5829 }, "end": { "local": "1982-11-24T02:53:34-06:00", "utc": "1982-11-24T08:53:34Z", "ms": 406976013815.8578 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-23T01:07:41-06:00", "utc": "1982-11-23T07:07:41Z", "ms": 406883261491.5829 }, "end": { "local": "1982-11-24T02:53:34-06:00", "utc": "1982-11-24T08:53:34Z", "ms": 406976013815.8578 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-11-23", "window": { "start": { "local": "1982-11-23T11:12:51-06:00", "utc": "1982-11-23T17:12:51Z", "ms": 406919571056.62427 }, "end": { "local": "1982-11-23T12:00:51-06:00", "utc": "1982-11-23T18:00:51Z", "ms": 406922451056.62427 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-11-24", "window": { "start": { "local": "1982-11-24T11:13:09-06:00", "utc": "1982-11-24T17:13:09Z", "ms": 407005988517.9608 }, "end": { "local": "1982-11-24T12:01:09-06:00", "utc": "1982-11-24T18:01:09Z", "ms": 407008868517.9608 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 01:08 on Tue 23 Nov to 02:54 on Wed 24 Nov.", "fact": "1982-11-23T07:07:41Z → 1982-11-24T08:53:34Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 23rd, 11:13–12:01 on the 24th.", "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 23rd and 0 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29975 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Chicago, 1982: Tuesday 23 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": "1982-11-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-23", "confidence": "determinate" } ], "quote": "In Chicago, Gopāṣṭamī 1982 falls on Tuesday 23 November. Aṣṭamī runs from 01:08 on Tue 23 Nov to 02:54 on Wed 24 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10579, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1982-11-24T02:53:34-06:00", "utc": "1982-11-24T08:53:34Z", "ms": 406976013815.8578 }, "end": { "local": "1982-11-25T03:55:49-06:00", "utc": "1982-11-25T09:55:49Z", "ms": 407066148872.4338 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-24T02:53:34-06:00", "utc": "1982-11-24T08:53:34Z", "ms": 406976013815.8578 }, "end": { "local": "1982-11-25T03:55:49-06:00", "utc": "1982-11-25T09:55:49Z", "ms": 407066148872.4338 } }, "kaala": "purvahna", "days": [ { "local_date": "1982-11-24", "window": { "start": { "local": "1982-11-24T06:50:59-06:00", "utc": "1982-11-24T12:50:59Z", "ms": 406990258839.1893 }, "end": { "local": "1982-11-24T10:01:45-06:00", "utc": "1982-11-24T16:01:45Z", "ms": 407001705291.7036 } }, "covered_min": 191, "window_min": 191, "qualifies": true }, { "local_date": "1982-11-25", "window": { "start": { "local": "1982-11-25T06:52:08-06:00", "utc": "1982-11-25T12:52:08Z", "ms": 407076727802.6605 }, "end": { "local": "1982-11-25T10:02:20-06:00", "utc": "1982-11-25T16:02:20Z", "ms": 407088140422.0059 } }, "covered_min": 0, "window_min": 190, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 02:54 on Wed 24 Nov to 03:56 on Thu 25 Nov.", "fact": "1982-11-24T08:53:34Z → 1982-11-25T09:55:49Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:51–10:02 on the 24th, 06:52–10:02 on the 25th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 191 of 191 minutes on the 24th and 0 of 190 on the 25th.", "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 10579 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Chicago, 1982: Wednesday 24 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": "1982-11-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-24", "confidence": "determinate" } ], "quote": "In Chicago, Akṣaya Navamī (Amla Navami) 1982 falls on Wednesday 24 November. Navamī runs from 02:54 on Wed 24 Nov to 03:56 on Thu 25 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26258, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1982-11-24T02:53:34-06:00", "utc": "1982-11-24T08:53:34Z", "ms": 406976013815.8578 }, "end": { "local": "1982-11-25T03:55:49-06:00", "utc": "1982-11-25T09:55:49Z", "ms": 407066148872.4338 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-24T02:53:34-06:00", "utc": "1982-11-24T08:53:34Z", "ms": 406976013815.8578 }, "end": { "local": "1982-11-25T03:55:49-06:00", "utc": "1982-11-25T09:55:49Z", "ms": 407066148872.4338 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-11-24", "window": { "start": { "local": "1982-11-24T11:13:09-06:00", "utc": "1982-11-24T17:13:09Z", "ms": 407005988517.9608 }, "end": { "local": "1982-11-24T12:01:09-06:00", "utc": "1982-11-24T18:01:09Z", "ms": 407008868517.9608 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-11-25", "window": { "start": { "local": "1982-11-25T11:13:27-06:00", "utc": "1982-11-25T17:13:27Z", "ms": 407092406731.67865 }, "end": { "local": "1982-11-25T12:01:27-06:00", "utc": "1982-11-25T18:01:27Z", "ms": 407095286731.67865 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 02:54 on Wed 24 Nov to 03:56 on Thu 25 Nov.", "fact": "1982-11-24T08:53:34Z → 1982-11-25T09:55:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 24th, 11:13–12:01 on the 25th.", "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 24th and 0 of 48 on the 25th.", "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 26258 s" }, { "step": "ruling", "text": "Durgā Navamī, Chicago, 1982: Wednesday 24 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": "1982-11-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-24", "confidence": "determinate" } ], "quote": "In Chicago, Durgā Navamī 1982 falls on Wednesday 24 November. Navamī runs from 02:54 on Wed 24 Nov to 03:56 on Thu 25 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-11-26", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9869, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-11-26T04:08:47-06:00", "utc": "1982-11-26T10:08:47Z", "ms": 407153326745.3468 }, "end": { "local": "1982-11-27T03:31:27-06:00", "utc": "1982-11-27T09:31:27Z", "ms": 407237487475.6001 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-26T04:08:47-06:00", "utc": "1982-11-26T10:08:47Z", "ms": 407153326745.3468 }, "end": { "local": "1982-11-27T03:31:27-06:00", "utc": "1982-11-27T09:31:27Z", "ms": 407237487475.6001 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-11-26", "window": { "start": { "local": "1982-11-26T06:53:16-06:00", "utc": "1982-11-26T12:53:16Z", "ms": 407163196024.9279 }, "end": { "local": "1982-11-26T06:53:16-06:00", "utc": "1982-11-26T12:53:16Z", "ms": 407163196024.9279 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-11-27", "window": { "start": { "local": "1982-11-27T06:54:23-06:00", "utc": "1982-11-27T12:54:23Z", "ms": 407249663452.8105 }, "end": { "local": "1982-11-27T06:54:23-06:00", "utc": "1982-11-27T12:54:23Z", "ms": 407249663452.8105 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:09 on Fri 26 Nov to 03:31 on Sat 27 Nov.", "fact": "1982-11-26T10:08:47Z → 1982-11-27T09:31:27Z" }, { "step": "kaala", "text": "Sunrise is at 06:53 on the 26th and 06:54 on the 27th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 26th and is not on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9869 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Chicago, 1982: Friday 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": "1982-11-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-26", "confidence": "determinate" } ], "quote": "In Chicago, Prabodhinī Ekādaśī 1982 falls on Friday 26 November. Ekādaśī runs from 04:09 on Fri 26 Nov to 03:31 on Sat 27 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-11-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-11-28", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20597, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-11-28T02:06:56-06:00", "utc": "1982-11-28T08:06:56Z", "ms": 407318815707.3044 }, "end": { "local": "1982-11-29T00:01:20-06:00", "utc": "1982-11-29T06:01:20Z", "ms": 407397680387.4035 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-28T02:06:56-06:00", "utc": "1982-11-28T08:06:56Z", "ms": 407318815707.3044 }, "end": { "local": "1982-11-29T00:01:20-06:00", "utc": "1982-11-29T06:01:20Z", "ms": 407397680387.4035 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-11-27", "window": { "start": { "local": "1982-11-27T16:21:47-06:00", "utc": "1982-11-27T22:21:47Z", "ms": 407283707268.0534 }, "end": { "local": "1982-11-27T18:18:17-06:00", "utc": "1982-11-28T00:18:17Z", "ms": 407290696970.15796 } }, "covered_min": 0, "window_min": 116, "qualifies": false }, { "local_date": "1982-11-28", "window": { "start": { "local": "1982-11-28T16:21:21-06:00", "utc": "1982-11-28T22:21:21Z", "ms": 407370081460.06915 }, "end": { "local": "1982-11-28T18:18:03-06:00", "utc": "1982-11-29T00:18:03Z", "ms": 407377083360.9251 } }, "covered_min": 117, "window_min": 117, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:07 on Sun 28 Nov to 00:01 on Mon 29 Nov.", "fact": "1982-11-28T08:06:56Z → 1982-11-29T06:01:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:22–18:18 on the 27th, 16:21–18:18 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 0 of 116 minutes on the 27th and 117 of 117 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 20597 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 1982: Sunday 28 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": "1982-11-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-28", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 1982 falls on Sunday 28 November. Trayodaśī runs from 02:07 on Sun 28 Nov to 00:01 on Mon 29 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-11-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6748, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-11-29T21:22:51-06:00", "utc": "1982-11-30T03:22:51Z", "ms": 407474570885.17554 }, "end": { "local": "1982-11-30T18:20:42-06:00", "utc": "1982-12-01T00:20:42Z", "ms": 407550041997.4369 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-29T21:22:51-06:00", "utc": "1982-11-30T03:22:51Z", "ms": 407474570885.17554 }, "end": { "local": "1982-11-30T18:20:42-06:00", "utc": "1982-12-01T00:20:42Z", "ms": 407550041997.4369 } }, "kaala": "nishita", "days": [ { "local_date": "1982-11-29", "window": { "start": { "local": "1982-11-29T23:15:19-06:00", "utc": "1982-11-30T05:15:19Z", "ms": 407481319195.8712 }, "end": { "local": "1982-11-30T00:03:19-06:00", "utc": "1982-11-30T06:03:19Z", "ms": 407484199195.8712 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-11-30", "window": { "start": { "local": "1982-11-30T23:15:40-06:00", "utc": "1982-12-01T05:15:40Z", "ms": 407567740459.43915 }, "end": { "local": "1982-12-01T00:03:40-06:00", "utc": "1982-12-01T06:03:40Z", "ms": 407570620459.43915 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:23 on Mon 29 Nov to 18:21 on Tue 30 Nov.", "fact": "1982-11-30T03:22:51Z → 1982-12-01T00:20:42Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:15–00:03 on the 29th, 23:16–00:04 on the 30th.", "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 29th and 0 of 48 on the 30th.", "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 6748 s" }, { "step": "ruling", "text": "Rāsayātrā, Chicago, 1982: Monday 29 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": "1982-11-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-29", "confidence": "determinate" } ], "quote": "In Chicago, Rāsayātrā 1982 falls on Monday 29 November. Pūrṇimā runs from 21:23 on Mon 29 Nov to 18:21 on Tue 30 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-11-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22653, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-11-29T21:22:51-06:00", "utc": "1982-11-30T03:22:51Z", "ms": 407474570885.17554 }, "end": { "local": "1982-11-30T18:20:42-06:00", "utc": "1982-12-01T00:20:42Z", "ms": 407550041997.4369 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1982-11-29T21:22:51-06:00", "utc": "1982-11-30T03:22:51Z", "ms": 407474570885.17554 }, "end": { "local": "1982-11-30T18:20:42-06:00", "utc": "1982-12-01T00:20:42Z", "ms": 407550041997.4369 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-11-29", "window": { "start": { "local": "1982-11-29T11:14:47-06:00", "utc": "1982-11-29T17:14:47Z", "ms": 407438086829.0353 }, "end": { "local": "1982-11-29T12:02:47-06:00", "utc": "1982-11-29T18:02:47Z", "ms": 407440966829.0353 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-11-30", "window": { "start": { "local": "1982-11-30T11:15:09-06:00", "utc": "1982-11-30T17:15:09Z", "ms": 407524508592.12 }, "end": { "local": "1982-11-30T12:03:09-06:00", "utc": "1982-11-30T18:03:09Z", "ms": 407527388592.12 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:23 on Mon 29 Nov to 18:21 on Tue 30 Nov.", "fact": "1982-11-30T03:22:51Z → 1982-12-01T00:20:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:15–12:03 on the 29th, 11:15–12:03 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22653 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Chicago, 1982: Tuesday 30 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": "1982-11-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-11-30", "confidence": "determinate" } ], "quote": "In Chicago, Kārtikī Pūrṇimā 1982 falls on Tuesday 30 November. Pūrṇimā runs from 21:23 on Mon 29 Nov to 18:21 on Tue 30 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/sankashta-chaturthi?on=1982-12-03", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-12-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36386, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-12-03T08:27:40-06:00", "utc": "1982-12-03T14:27:40Z", "ms": 407773659849.1064 }, "end": { "local": "1982-12-04T05:24:11-06:00", "utc": "1982-12-04T11:24:11Z", "ms": 407849051437.5163 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-12-03T08:27:40-06:00", "utc": "1982-12-03T14:27:40Z", "ms": 407773659849.1064 }, "end": { "local": "1982-12-04T05:24:11-06:00", "utc": "1982-12-04T11:24:11Z", "ms": 407849051437.5163 } }, "kaala": "moonrise", "days": [ { "local_date": "1982-12-02", "window": { "start": { "local": "1982-12-02T18:11:51-06:00", "utc": "1982-12-03T00:11:51Z", "ms": 407722310759.42004 }, "end": { "local": "1982-12-02T18:11:51-06:00", "utc": "1982-12-03T00:11:51Z", "ms": 407722310759.42004 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-12-03", "window": { "start": { "local": "1982-12-03T19:17:45-06:00", "utc": "1982-12-04T01:17:45Z", "ms": 407812665436.74994 }, "end": { "local": "1982-12-03T19:17:45-06:00", "utc": "1982-12-04T01:17:45Z", "ms": 407812665436.74994 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:28 on Fri 3 Dec to 05:24 on Sat 4 Dec.", "fact": "1982-12-03T14:27:40Z → 1982-12-04T11:24:11Z" }, { "step": "kaala", "text": "Moonrise is at 18:12 on the 2nd and 19:18 on the 3rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 2nd and is on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36386 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 1982: Friday 3 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": "1982-12-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-12-03", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 1982 falls on Friday 3 December. Caturthī runs from 08:28 on Fri 3 Dec to 05:24 on Sat 4 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/sankashta-chaturthi?on=1982-12-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/ekadashi?on=1982-12-10", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-12-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36639, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-12-09T20:32:02-06:00", "utc": "1982-12-10T02:32:02Z", "ms": 408335521876.94086 }, "end": { "local": "1982-12-10T20:57:36-06:00", "utc": "1982-12-11T02:57:36Z", "ms": 408423455632.7582 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-12-09T20:32:02-06:00", "utc": "1982-12-10T02:32:02Z", "ms": 408335521876.94086 }, "end": { "local": "1982-12-10T20:57:36-06:00", "utc": "1982-12-11T02:57:36Z", "ms": 408423455632.7582 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-12-10", "window": { "start": { "local": "1982-12-10T07:07:24-06:00", "utc": "1982-12-10T13:07:24Z", "ms": 408373644154.51434 }, "end": { "local": "1982-12-10T07:07:24-06:00", "utc": "1982-12-10T13:07:24Z", "ms": 408373644154.51434 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1982-12-11", "window": { "start": { "local": "1982-12-11T07:08:15-06:00", "utc": "1982-12-11T13:08:15Z", "ms": 408460094943.1225 }, "end": { "local": "1982-12-11T07:08:15-06:00", "utc": "1982-12-11T13:08:15Z", "ms": 408460094943.1225 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:32 on Thu 9 Dec to 20:58 on Fri 10 Dec.", "fact": "1982-12-10T02:32:02Z → 1982-12-11T02:57:36Z" }, { "step": "kaala", "text": "Sunrise is at 07:07 on the 10th and 07:08 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 36639 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Chicago, 1982: Friday 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": "1982-12-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-12-10", "confidence": "determinate" } ], "quote": "In Chicago, Utpannā Ekādaśī 1982 falls on Friday 10 December. Ekādaśī runs from 20:32 on Thu 9 Dec to 20:58 on Fri 10 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-12-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/pradosha-vrata?on=1982-12-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-12-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12943, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-12-11T21:53:41-06:00", "utc": "1982-12-12T03:53:41Z", "ms": 408513221073.0927 }, "end": { "local": "1982-12-12T23:17:47-06:00", "utc": "1982-12-13T05:17:47Z", "ms": 408604667341.01624 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-12-11T21:53:41-06:00", "utc": "1982-12-12T03:53:41Z", "ms": 408513221073.0927 }, "end": { "local": "1982-12-12T23:17:47-06:00", "utc": "1982-12-13T05:17:47Z", "ms": 408604667341.01624 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-12-11", "window": { "start": { "local": "1982-12-11T16:19:20-06:00", "utc": "1982-12-11T22:19:20Z", "ms": 408493160431.347 }, "end": { "local": "1982-12-11T18:17:58-06:00", "utc": "1982-12-12T00:17:58Z", "ms": 408500278257.01117 } }, "covered_min": 0, "window_min": 119, "qualifies": false }, { "local_date": "1982-12-12", "window": { "start": { "local": "1982-12-12T16:19:28-06:00", "utc": "1982-12-12T22:19:28Z", "ms": 408579567933.3556 }, "end": { "local": "1982-12-12T18:18:11-06:00", "utc": "1982-12-13T00:18:11Z", "ms": 408586691094.2212 } }, "covered_min": 119, "window_min": 119, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:54 on Sat 11 Dec to 23:18 on Sun 12 Dec.", "fact": "1982-12-12T03:53:41Z → 1982-12-13T05:17:47Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:19–18:18 on the 11th, 16:19–18:18 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 119 minutes on the 11th and 119 of 119 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 12943 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 1982: Sunday 12 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": "1982-12-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-12-12", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 1982 falls on Sunday 12 December. Trayodaśī runs from 21:54 on Sat 11 Dec to 23:18 on Sun 12 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-12-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/shivaratri?on=1982-12-12", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-12-12", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 172, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1982-12-12T23:17:47-06:00", "utc": "1982-12-13T05:17:47Z", "ms": 408604667341.01624 }, "end": { "local": "1982-12-14T01:07:02-06:00", "utc": "1982-12-14T07:07:02Z", "ms": 408697621976.8006 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-12-12T23:17:47-06:00", "utc": "1982-12-13T05:17:47Z", "ms": 408604667341.01624 }, "end": { "local": "1982-12-14T01:07:02-06:00", "utc": "1982-12-14T07:07:02Z", "ms": 408697621976.8006 } }, "kaala": "nishita", "days": [ { "local_date": "1982-12-12", "window": { "start": { "local": "1982-12-12T23:20:40-06:00", "utc": "1982-12-13T05:20:40Z", "ms": 408604839786.6017 }, "end": { "local": "1982-12-13T00:08:40-06:00", "utc": "1982-12-13T06:08:40Z", "ms": 408607719786.6017 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-12-13", "window": { "start": { "local": "1982-12-13T23:21:08-06:00", "utc": "1982-12-14T05:21:08Z", "ms": 408691267628.92395 }, "end": { "local": "1982-12-14T00:09:08-06:00", "utc": "1982-12-14T06:09:08Z", "ms": 408694147628.92395 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:18 on Sun 12 Dec to 01:07 on Tue 14 Dec.", "fact": "1982-12-13T05:17:47Z → 1982-12-14T07:07:02Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:21–00:09 on the 12th, 23:21–00:09 on the 13th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both nights qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 172 s < 300 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 1982: Sunday 12 December.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-12-12", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-12-13", "confidence": "boundary" } ], "quote": "In Chicago, Śivarātri 1982 falls on Sunday 12 December. Caturdaśī runs from 23:18 on Sun 12 Dec to 01:07 on Tue 14 Dec and covers all of niśītha that night. It also reaches the next night for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 2 min 52 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/1982/shivaratri?on=1982-12-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/vinayaka-chaturthi?on=1982-12-18", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-12-18", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 616, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1982-12-18T11:12:57-06:00", "utc": "1982-12-18T17:12:57Z", "ms": 409079576851.05804 }, "end": { "local": "1982-12-19T13:54:27-06:00", "utc": "1982-12-19T19:54:27Z", "ms": 409175667464.8016 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-12-18T11:12:57-06:00", "utc": "1982-12-18T17:12:57Z", "ms": 409079576851.05804 }, "end": { "local": "1982-12-19T13:54:27-06:00", "utc": "1982-12-19T19:54:27Z", "ms": 409175667464.8016 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-12-18", "window": { "start": { "local": "1982-12-18T11:23:12-06:00", "utc": "1982-12-18T17:23:12Z", "ms": 409080192403.7315 }, "end": { "local": "1982-12-18T12:11:12-06:00", "utc": "1982-12-18T18:11:12Z", "ms": 409083072403.7315 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1982-12-19", "window": { "start": { "local": "1982-12-19T11:23:43-06:00", "utc": "1982-12-19T17:23:43Z", "ms": 409166622512.27155 }, "end": { "local": "1982-12-19T12:11:43-06:00", "utc": "1982-12-19T18:11:43Z", "ms": 409169502512.27155 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:13 on Sat 18 Dec to 13:54 on Sun 19 Dec.", "fact": "1982-12-18T17:12:57Z → 1982-12-19T19:54:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 18th, 11:24–12:12 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 616 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 1982: Saturday 18 December.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1982-12-18", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-12-19", "confidence": "boundary" } ], "quote": "In Chicago, Vināyaka Caturthī 1982 falls on Saturday 18 December. Caturthī runs from 11:13 on Sat 18 Dec to 13:54 on Sun 19 Dec and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/1982/vinayaka-chaturthi?on=1982-12-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-12-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6165, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1982-12-19T13:54:27-06:00", "utc": "1982-12-19T19:54:27Z", "ms": 409175667464.8016 }, "end": { "local": "1982-12-20T16:21:29-06:00", "utc": "1982-12-20T22:21:29Z", "ms": 409270888664.2209 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-12-19T13:54:27-06:00", "utc": "1982-12-19T19:54:27Z", "ms": 409175667464.8016 }, "end": { "local": "1982-12-20T16:21:29-06:00", "utc": "1982-12-20T22:21:29Z", "ms": 409270888664.2209 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-12-19", "window": { "start": { "local": "1982-12-19T11:23:43-06:00", "utc": "1982-12-19T17:23:43Z", "ms": 409166622512.27155 }, "end": { "local": "1982-12-19T12:11:43-06:00", "utc": "1982-12-19T18:11:43Z", "ms": 409169502512.27155 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-12-20", "window": { "start": { "local": "1982-12-20T11:24:13-06:00", "utc": "1982-12-20T17:24:13Z", "ms": 409253052725.5248 }, "end": { "local": "1982-12-20T12:12:13-06:00", "utc": "1982-12-20T18:12:13Z", "ms": 409255932725.5248 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 13:54 on Sun 19 Dec to 16:21 on Mon 20 Dec.", "fact": "1982-12-19T19:54:27Z → 1982-12-20T22:21:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 19th, 11:24–12:12 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6165 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Chicago, 1982: Monday 20 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": "1982-12-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-12-20", "confidence": "determinate" } ], "quote": "In Chicago, Nāga Pañcamī (Mārgaśīrṣa) 1982 falls on Monday 20 December. Pañcamī runs from 13:54 on Sun 19 Dec to 16:21 on Mon 20 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-12-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14956, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1982-12-20T16:21:29-06:00", "utc": "1982-12-20T22:21:29Z", "ms": 409270888664.2209 }, "end": { "local": "1982-12-21T18:23:07-06:00", "utc": "1982-12-22T00:23:07Z", "ms": 409364587026.65063 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-12-20T16:21:29-06:00", "utc": "1982-12-20T22:21:29Z", "ms": 409270888664.2209 }, "end": { "local": "1982-12-21T18:23:07-06:00", "utc": "1982-12-22T00:23:07Z", "ms": 409364587026.65063 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-12-20", "window": { "start": { "local": "1982-12-20T11:24:13-06:00", "utc": "1982-12-20T17:24:13Z", "ms": 409253052725.5248 }, "end": { "local": "1982-12-20T12:12:13-06:00", "utc": "1982-12-20T18:12:13Z", "ms": 409255932725.5248 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-12-21", "window": { "start": { "local": "1982-12-21T11:24:43-06:00", "utc": "1982-12-21T17:24:43Z", "ms": 409339483006.5597 }, "end": { "local": "1982-12-21T12:12:43-06:00", "utc": "1982-12-21T18:12:43Z", "ms": 409342363006.5597 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 16:21 on Mon 20 Dec to 18:23 on Tue 21 Dec.", "fact": "1982-12-20T22:21:29Z → 1982-12-22T00:23:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 20th, 11:25–12:13 on the 21st.", "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 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 14956 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Chicago, 1982: Tuesday 21 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": "1982-12-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-12-21", "confidence": "determinate" } ], "quote": "In Chicago, Campā Ṣaṣṭhī 1982 falls on Tuesday 21 December. Ṣaṣṭhī runs from 16:21 on Mon 20 Dec to 18:23 on Tue 21 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-12-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14956, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1982-12-20T16:21:29-06:00", "utc": "1982-12-20T22:21:29Z", "ms": 409270888664.2209 }, "end": { "local": "1982-12-21T18:23:07-06:00", "utc": "1982-12-22T00:23:07Z", "ms": 409364587026.65063 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-12-20T16:21:29-06:00", "utc": "1982-12-20T22:21:29Z", "ms": 409270888664.2209 }, "end": { "local": "1982-12-21T18:23:07-06:00", "utc": "1982-12-22T00:23:07Z", "ms": 409364587026.65063 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-12-20", "window": { "start": { "local": "1982-12-20T11:24:13-06:00", "utc": "1982-12-20T17:24:13Z", "ms": 409253052725.5248 }, "end": { "local": "1982-12-20T12:12:13-06:00", "utc": "1982-12-20T18:12:13Z", "ms": 409255932725.5248 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-12-21", "window": { "start": { "local": "1982-12-21T11:24:43-06:00", "utc": "1982-12-21T17:24:43Z", "ms": 409339483006.5597 }, "end": { "local": "1982-12-21T12:12:43-06:00", "utc": "1982-12-21T18:12:43Z", "ms": 409342363006.5597 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 16:21 on Mon 20 Dec to 18:23 on Tue 21 Dec.", "fact": "1982-12-20T22:21:29Z → 1982-12-22T00:23:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 20th, 11:25–12:13 on the 21st.", "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 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 14956 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Chicago, 1982: Tuesday 21 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": "1982-12-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-12-21", "confidence": "determinate" } ], "quote": "In Chicago, Skanda Ṣaṣṭhī 1982 falls on Tuesday 21 December. Ṣaṣṭhī runs from 16:21 on Mon 20 Dec to 18:23 on Tue 21 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-12-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22224, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1982-12-21T18:23:07-06:00", "utc": "1982-12-22T00:23:07Z", "ms": 409364587026.65063 }, "end": { "local": "1982-12-22T19:49:19-06:00", "utc": "1982-12-23T01:49:19Z", "ms": 409456159194.51117 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-12-21T18:23:07-06:00", "utc": "1982-12-22T00:23:07Z", "ms": 409364587026.65063 }, "end": { "local": "1982-12-22T19:49:19-06:00", "utc": "1982-12-23T01:49:19Z", "ms": 409456159194.51117 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-12-21", "window": { "start": { "local": "1982-12-21T11:24:43-06:00", "utc": "1982-12-21T17:24:43Z", "ms": 409339483006.5597 }, "end": { "local": "1982-12-21T12:12:43-06:00", "utc": "1982-12-21T18:12:43Z", "ms": 409342363006.5597 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-12-22", "window": { "start": { "local": "1982-12-22T11:25:13-06:00", "utc": "1982-12-22T17:25:13Z", "ms": 409425913318.76904 }, "end": { "local": "1982-12-22T12:13:13-06:00", "utc": "1982-12-22T18:13:13Z", "ms": 409428793318.76904 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 18:23 on Tue 21 Dec to 19:49 on Wed 22 Dec.", "fact": "1982-12-22T00:23:07Z → 1982-12-23T01:49:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 21st, 11:25–12:13 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 22224 s" }, { "step": "ruling", "text": "Mitra Saptamī, Chicago, 1982: Wednesday 22 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": "1982-12-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-12-22", "confidence": "determinate" } ], "quote": "In Chicago, Mitra Saptamī 1982 falls on Wednesday 22 December. Saptamī runs from 18:23 on Tue 21 Dec to 19:49 on Wed 22 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/ekadashi?on=1982-12-26", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-12-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38089, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1982-12-25T19:32:58-06:00", "utc": "1982-12-26T01:32:58Z", "ms": 409714378232.4108 }, "end": { "local": "1982-12-26T17:52:04-06:00", "utc": "1982-12-26T23:52:04Z", "ms": 409794723900.3035 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-12-25T19:32:58-06:00", "utc": "1982-12-26T01:32:58Z", "ms": 409714378232.4108 }, "end": { "local": "1982-12-26T17:52:04-06:00", "utc": "1982-12-26T23:52:04Z", "ms": 409794723900.3035 } }, "kaala": "sunrise", "days": [ { "local_date": "1982-12-25", "window": { "start": { "local": "1982-12-25T07:16:53-06:00", "utc": "1982-12-25T13:16:53Z", "ms": 409670213293.1309 }, "end": { "local": "1982-12-25T07:16:53-06:00", "utc": "1982-12-25T13:16:53Z", "ms": 409670213293.1309 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1982-12-26", "window": { "start": { "local": "1982-12-26T07:17:15-06:00", "utc": "1982-12-26T13:17:15Z", "ms": 409756634743.29083 }, "end": { "local": "1982-12-26T07:17:15-06:00", "utc": "1982-12-26T13:17:15Z", "ms": 409756634743.29083 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:33 on Sat 25 Dec to 17:52 on Sun 26 Dec.", "fact": "1982-12-26T01:32:58Z → 1982-12-26T23:52:04Z" }, { "step": "kaala", "text": "Sunrise is at 07:17 on the 25th and 07:17 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 38089 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Chicago, 1982: Sunday 26 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": "1982-12-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-12-26", "confidence": "determinate" } ], "quote": "In Chicago, Mokṣadā Ekādaśī 1982 falls on Sunday 26 December. Ekādaśī runs from 19:33 on Sat 25 Dec to 17:52 on Sun 26 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/1982/ekadashi?on=1982-12-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-12-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11632, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1982-12-26T17:52:04-06:00", "utc": "1982-12-26T23:52:04Z", "ms": 409794723900.3035 }, "end": { "local": "1982-12-27T15:29:36-06:00", "utc": "1982-12-27T21:29:36Z", "ms": 409872575756.3205 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-12-26T17:52:04-06:00", "utc": "1982-12-26T23:52:04Z", "ms": 409794723900.3035 }, "end": { "local": "1982-12-27T15:29:36-06:00", "utc": "1982-12-27T21:29:36Z", "ms": 409872575756.3205 } }, "kaala": "madhyahna", "days": [ { "local_date": "1982-12-26", "window": { "start": { "local": "1982-12-26T11:27:14-06:00", "utc": "1982-12-26T17:27:14Z", "ms": 409771634167.69507 }, "end": { "local": "1982-12-26T12:15:14-06:00", "utc": "1982-12-26T18:15:14Z", "ms": 409774514167.69507 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1982-12-27", "window": { "start": { "local": "1982-12-27T11:27:44-06:00", "utc": "1982-12-27T17:27:44Z", "ms": 409858064110.11316 }, "end": { "local": "1982-12-27T12:15:44-06:00", "utc": "1982-12-27T18:15:44Z", "ms": 409860944110.11316 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 17:52 on Sun 26 Dec to 15:30 on Mon 27 Dec.", "fact": "1982-12-26T23:52:04Z → 1982-12-27T21:29:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:27–12:15 on the 26th, 11:28–12:16 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 26th and 48 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 11632 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Chicago, 1982: Monday 27 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": "1982-12-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-12-27", "confidence": "determinate" } ], "quote": "In Chicago, Akhaṇḍa Dvādaśī 1982 falls on Monday 27 December. Dvādaśī runs from 17:52 on Sun 26 Dec to 15:30 on Mon 27 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/1982/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": "/chicago/festivals/1982/pradosha-vrata?on=1982-12-27", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-12-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3379, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1982-12-27T15:29:36-06:00", "utc": "1982-12-27T21:29:36Z", "ms": 409872575756.3205 }, "end": { "local": "1982-12-28T12:32:53-06:00", "utc": "1982-12-28T18:32:53Z", "ms": 409948372578.1027 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-12-27T15:29:36-06:00", "utc": "1982-12-27T21:29:36Z", "ms": 409872575756.3205 }, "end": { "local": "1982-12-28T12:32:53-06:00", "utc": "1982-12-28T18:32:53Z", "ms": 409948372578.1027 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-12-27", "window": { "start": { "local": "1982-12-27T16:25:54-06:00", "utc": "1982-12-27T22:25:54Z", "ms": 409875954283.59564 }, "end": { "local": "1982-12-27T18:24:50-06:00", "utc": "1982-12-28T00:24:50Z", "ms": 409883089826.36316 } }, "covered_min": 119, "window_min": 119, "qualifies": true }, { "local_date": "1982-12-28", "window": { "start": { "local": "1982-12-28T16:26:37-06:00", "utc": "1982-12-28T22:26:37Z", "ms": 409962396907.9413 }, "end": { "local": "1982-12-28T18:25:29-06:00", "utc": "1982-12-29T00:25:29Z", "ms": 409969528717.7487 } }, "covered_min": 0, "window_min": 119, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:30 on Mon 27 Dec to 12:33 on Tue 28 Dec.", "fact": "1982-12-27T21:29:36Z → 1982-12-28T18:32:53Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:26–18:25 on the 27th, 16:27–18:25 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 119 of 119 minutes on the 27th and 0 of 119 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 3379 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 1982: Monday 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": "1982-12-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-12-27", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 1982 falls on Monday 27 December. Trayodaśī runs from 15:30 on Mon 27 Dec to 12:33 on Tue 28 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/pradosha-vrata?on=1982-12-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/1982/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "4887398", "year": 1982, "local_date": "1982-12-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26202, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1982-12-29T09:10:40-06:00", "utc": "1982-12-29T15:10:40Z", "ms": 410022639726.99677 }, "end": { "local": "1982-12-30T05:32:35-06:00", "utc": "1982-12-30T11:32:35Z", "ms": 410095955056.8327 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1982-12-29T09:10:40-06:00", "utc": "1982-12-29T15:10:40Z", "ms": 410022639726.99677 }, "end": { "local": "1982-12-30T05:32:35-06:00", "utc": "1982-12-30T11:32:35Z", "ms": 410095955056.8327 } }, "kaala": "pradosha", "days": [ { "local_date": "1982-12-29", "window": { "start": { "local": "1982-12-29T16:27:21-06:00", "utc": "1982-12-29T22:27:21Z", "ms": 410048841421.8753 }, "end": { "local": "1982-12-29T18:26:09-06:00", "utc": "1982-12-30T00:26:09Z", "ms": 410055968939.8048 } }, "covered_min": 119, "window_min": 119, "qualifies": true }, { "local_date": "1982-12-30", "window": { "start": { "local": "1982-12-30T16:28:08-06:00", "utc": "1982-12-30T22:28:08Z", "ms": 410135287781.63086 }, "end": { "local": "1982-12-30T18:26:50-06:00", "utc": "1982-12-31T00:26:50Z", "ms": 410142410453.36224 } }, "covered_min": 0, "window_min": 119, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:11 on Wed 29 Dec to 05:33 on Thu 30 Dec.", "fact": "1982-12-29T15:10:40Z → 1982-12-30T11:32:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:27–18:26 on the 29th, 16:28–18:27 on the 30th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 119 of 119 minutes on the 29th and 0 of 119 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26202 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Chicago, 1982: Wednesday 29 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": "1982-12-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1982-12-29", "confidence": "determinate" } ], "quote": "In Chicago, Dattātreyotpatti (Datta Jayanti) 1982 falls on Wednesday 29 December. Pūrṇimā runs from 09:11 on Wed 29 Dec to 05:33 on Thu 30 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/1982/dattatreyotpatti", "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" } }