{ "id": "/chicago/festivals/2011", "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": 2011, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-01-01", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-01-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30574, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-01-01T03:33:58-06:00", "utc": "2011-01-01T09:33:58Z", "ms": 1293874437787.863 }, "end": { "local": "2011-01-02T02:57:57-06:00", "utc": "2011-01-02T08:57:57Z", "ms": 1293958676774.615 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-01-01T03:33:58-06:00", "utc": "2011-01-01T09:33:58Z", "ms": 1293874437787.863 }, "end": { "local": "2011-01-02T02:57:57-06:00", "utc": "2011-01-02T08:57:57Z", "ms": 1293958676774.615 } }, "kaala": "pradosha", "days": [ { "local_date": "2010-12-31", "window": { "start": { "local": "2010-12-31T16:29:03-06:00", "utc": "2010-12-31T22:29:03Z", "ms": 1293834542887.2754 }, "end": { "local": "2010-12-31T18:27:39-06:00", "utc": "2011-01-01T00:27:39Z", "ms": 1293841658746.7642 } }, "covered_min": 0, "window_min": 119, "qualifies": false }, { "local_date": "2011-01-01", "window": { "start": { "local": "2011-01-01T16:29:53-06:00", "utc": "2011-01-01T22:29:53Z", "ms": 1293920993329.6235 }, "end": { "local": "2011-01-01T18:28:23-06:00", "utc": "2011-01-02T00:28:23Z", "ms": 1293928103131.8062 } }, "covered_min": 118, "window_min": 118, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:34 on Sat 1 Jan to 02:58 on Sun 2 Jan.", "fact": "2011-01-01T09:33:58Z → 2011-01-02T08:57:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:29–18:28 on the 31st, 16:30–18:28 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 119 minutes on the 31st and 118 of 118 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30574 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2011: Saturday 1 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-01-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-01-01", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2011 falls on Saturday 1 January. Trayodaśī runs from 03:34 on Sat 1 Jan to 02:58 on Sun 2 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-01-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/shivaratri?on=2011-01-02", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-01-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8880, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-01-02T02:57:57-06:00", "utc": "2011-01-02T08:57:57Z", "ms": 1293958676774.615 }, "end": { "local": "2011-01-03T02:46:43-06:00", "utc": "2011-01-03T08:46:43Z", "ms": 1294044402541.6394 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-01-02T02:57:57-06:00", "utc": "2011-01-02T08:57:57Z", "ms": 1293958676774.615 }, "end": { "local": "2011-01-03T02:46:43-06:00", "utc": "2011-01-03T08:46:43Z", "ms": 1294044402541.6394 } }, "kaala": "nishita", "days": [ { "local_date": "2011-01-01", "window": { "start": { "local": "2011-01-01T23:30:15-06:00", "utc": "2011-01-02T05:30:15Z", "ms": 1293946215087.808 }, "end": { "local": "2011-01-02T00:18:15-06:00", "utc": "2011-01-02T06:18:15Z", "ms": 1293949095087.808 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-01-02", "window": { "start": { "local": "2011-01-02T23:30:42-06:00", "utc": "2011-01-03T05:30:42Z", "ms": 1294032642495.495 }, "end": { "local": "2011-01-03T00:18:42-06:00", "utc": "2011-01-03T06:18:42Z", "ms": 1294035522495.495 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:58 on Sun 2 Jan to 02:47 on Mon 3 Jan.", "fact": "2011-01-02T08:57:57Z → 2011-01-03T08:46:43Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:30–00:18 on the 1st, 23:31–00:19 on the 2nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8880 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2011: Sunday 2 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": "2011-01-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-01-02", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2011 falls on Sunday 2 January. Caturdaśī runs from 02:58 on Sun 2 Jan to 02:47 on Mon 3 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/shivaratri?on=2011-01-02", "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/2011/vinayaka-chaturthi?on=2011-01-07", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-01-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9587, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-01-07T06:45:28-06:00", "utc": "2011-01-07T12:45:28Z", "ms": 1294404327785.9255 }, "end": { "local": "2011-01-08T08:53:37-06:00", "utc": "2011-01-08T14:53:37Z", "ms": 1294498416900.8574 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-01-07T06:45:28-06:00", "utc": "2011-01-07T12:45:28Z", "ms": 1294404327785.9255 }, "end": { "local": "2011-01-08T08:53:37-06:00", "utc": "2011-01-08T14:53:37Z", "ms": 1294498416900.8574 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-01-07", "window": { "start": { "local": "2011-01-07T11:32:58-06:00", "utc": "2011-01-07T17:32:58Z", "ms": 1294421578128.1416 }, "end": { "local": "2011-01-07T12:20:58-06:00", "utc": "2011-01-07T18:20:58Z", "ms": 1294424458128.1416 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-01-08", "window": { "start": { "local": "2011-01-08T11:33:24-06:00", "utc": "2011-01-08T17:33:24Z", "ms": 1294508004109.7266 }, "end": { "local": "2011-01-08T12:21:24-06:00", "utc": "2011-01-08T18:21:24Z", "ms": 1294510884109.7266 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:45 on Fri 7 Jan to 08:54 on Sat 8 Jan.", "fact": "2011-01-07T12:45:28Z → 2011-01-08T14:53:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 7th, 11:33–12:21 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9587 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2011: Friday 7 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-01-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-01-07", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2011 falls on Friday 7 January. Caturthī runs from 06:45 on Fri 7 Jan to 08:54 on Sat 8 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/vinayaka-chaturthi?on=2011-01-07", "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/2011/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34135, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2011-01-14T07:14:07-06:00", "utc": "2011-01-14T13:14:07Z", "ms": 1295010847050.976 }, "end": { "local": "2011-02-12T20:12:53-06:00", "utc": "2011-02-13T02:12:53Z", "ms": 1297563172779.1145 } }, "span": { "of": "transit", "start": { "local": "2011-01-14T07:14:07-06:00", "utc": "2011-01-14T13:14:07Z", "ms": 1295010847050.976 }, "end": { "local": "2011-01-14T07:14:07-06:00", "utc": "2011-01-14T13:14:07Z", "ms": 1295010847050.976 } }, "kaala": "sunset-day", "days": [ { "local_date": "2011-01-14", "window": { "start": { "local": "2011-01-13T16:41:54-06:00", "utc": "2011-01-13T22:41:54Z", "ms": 1294958514063.2354 }, "end": { "local": "2011-01-14T16:43:02-06:00", "utc": "2011-01-14T22:43:02Z", "ms": 1295044981910.152 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2011-01-15", "window": { "start": { "local": "2011-01-14T16:43:02-06:00", "utc": "2011-01-14T22:43:02Z", "ms": 1295044981910.152 }, "end": { "local": "2011-01-15T16:44:11-06:00", "utc": "2011-01-15T22:44:11Z", "ms": 1295131450680.1636 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2011-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 07:14 on Fri 14 Jan.", "fact": "2011-01-14T13:14:07Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 16:43, and the day of the 15th ends at 16:44.", "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 34135 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Friday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Chicago, 2011: Thursday 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": "2011-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2011-01-13", "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": "2011-01-12", "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 2011 falls on Thursday 13 January. It is kept the day before Pongal, which falls on Friday 14 January. The Sun enters Makara at 07:14 on Fri 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 12 January.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34135, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2011-01-14T07:14:07-06:00", "utc": "2011-01-14T13:14:07Z", "ms": 1295010847050.976 }, "end": { "local": "2011-02-12T20:12:53-06:00", "utc": "2011-02-13T02:12:53Z", "ms": 1297563172779.1145 } }, "span": { "of": "transit", "start": { "local": "2011-01-14T07:14:07-06:00", "utc": "2011-01-14T13:14:07Z", "ms": 1295010847050.976 }, "end": { "local": "2011-01-14T07:14:07-06:00", "utc": "2011-01-14T13:14:07Z", "ms": 1295010847050.976 } }, "kaala": "sunset-day", "days": [ { "local_date": "2011-01-14", "window": { "start": { "local": "2011-01-13T16:41:54-06:00", "utc": "2011-01-13T22:41:54Z", "ms": 1294958514063.2354 }, "end": { "local": "2011-01-14T16:43:02-06:00", "utc": "2011-01-14T22:43:02Z", "ms": 1295044981910.152 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2011-01-15", "window": { "start": { "local": "2011-01-14T16:43:02-06:00", "utc": "2011-01-14T22:43:02Z", "ms": 1295044981910.152 }, "end": { "local": "2011-01-15T16:44:11-06:00", "utc": "2011-01-15T22:44:11Z", "ms": 1295131450680.1636 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 07:14 on Fri 14 Jan.", "fact": "2011-01-14T13:14:07Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 16:43, and the day of the 15th ends at 16:44.", "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 34135 s" }, { "step": "ruling", "text": "Pongal, Chicago, 2011: Friday 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": "2011-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2011-01-14", "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": "2011-01-13", "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 2011 falls on Friday 14 January. The Sun enters Makara at 07:14 on Fri 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26047, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2011-01-14T07:14:07-06:00", "utc": "2011-01-14T13:14:07Z", "ms": 1295010847050.976 }, "end": { "local": "2011-02-12T20:12:53-06:00", "utc": "2011-02-13T02:12:53Z", "ms": 1297563172779.1145 } }, "span": { "of": "transit", "start": { "local": "2011-01-14T07:14:07-06:00", "utc": "2011-01-14T13:14:07Z", "ms": 1295010847050.976 }, "end": { "local": "2011-01-14T07:14:07-06:00", "utc": "2011-01-14T13:14:07Z", "ms": 1295010847050.976 } }, "kaala": "civil-day", "days": [ { "local_date": "2011-01-13", "window": { "start": { "local": "2011-01-13T00:00:00-06:00", "utc": "2011-01-13T06:00:00Z", "ms": 1294898400000 }, "end": { "local": "2011-01-14T00:00:00-06:00", "utc": "2011-01-14T06:00:00Z", "ms": 1294984800000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "2011-01-14", "window": { "start": { "local": "2011-01-14T00:00:00-06:00", "utc": "2011-01-14T06:00:00Z", "ms": 1294984800000 }, "end": { "local": "2011-01-15T00:00:00-06:00", "utc": "2011-01-15T06:00:00Z", "ms": 1295071200000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 07:14 on Fri 14 Jan.", "fact": "2011-01-14T13:14:07Z · 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 14th, not the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from midnight → only-day · margin 26047 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Chicago, 2011: Friday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "makara-sankranti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "rashi": "Makara", "day_from": "midnight" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2011-01-13", "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": "2011-01-14", "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 2011 falls on Friday 14 January. The Sun enters Makara at 07:14 on Fri 14 Jan, and the rule counts the day from midnight. Counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34135, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2011-01-14T07:14:07-06:00", "utc": "2011-01-14T13:14:07Z", "ms": 1295010847050.976 }, "end": { "local": "2011-02-12T20:12:53-06:00", "utc": "2011-02-13T02:12:53Z", "ms": 1297563172779.1145 } }, "span": { "of": "transit", "start": { "local": "2011-01-14T07:14:07-06:00", "utc": "2011-01-14T13:14:07Z", "ms": 1295010847050.976 }, "end": { "local": "2011-01-14T07:14:07-06:00", "utc": "2011-01-14T13:14:07Z", "ms": 1295010847050.976 } }, "kaala": "sunset-day", "days": [ { "local_date": "2011-01-14", "window": { "start": { "local": "2011-01-13T16:41:54-06:00", "utc": "2011-01-13T22:41:54Z", "ms": 1294958514063.2354 }, "end": { "local": "2011-01-14T16:43:02-06:00", "utc": "2011-01-14T22:43:02Z", "ms": 1295044981910.152 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2011-01-15", "window": { "start": { "local": "2011-01-14T16:43:02-06:00", "utc": "2011-01-14T22:43:02Z", "ms": 1295044981910.152 }, "end": { "local": "2011-01-15T16:44:11-06:00", "utc": "2011-01-15T22:44:11Z", "ms": 1295131450680.1636 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2011-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 07:14 on Fri 14 Jan.", "fact": "2011-01-14T13:14:07Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 16:43, and the day of the 15th ends at 16:44.", "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 34135 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Friday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Chicago, 2011: Saturday 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": "2011-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2011-01-15", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2011-01-14", "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 2011 falls on Saturday 15 January. It is kept the day after Pongal, which falls on Friday 14 January. The Sun enters Makara at 07:14 on Fri 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 14 January.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-01-15", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35077, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-01-14T21:15:37-06:00", "utc": "2011-01-15T03:15:37Z", "ms": 1295061336792.012 }, "end": { "local": "2011-01-15T21:31:04-06:00", "utc": "2011-01-16T03:31:04Z", "ms": 1295148663902.3828 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-01-14T21:15:37-06:00", "utc": "2011-01-15T03:15:37Z", "ms": 1295061336792.012 }, "end": { "local": "2011-01-15T21:31:04-06:00", "utc": "2011-01-16T03:31:04Z", "ms": 1295148663902.3828 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-01-15", "window": { "start": { "local": "2011-01-15T07:16:08-06:00", "utc": "2011-01-15T13:16:08Z", "ms": 1295097368257.3782 }, "end": { "local": "2011-01-15T07:16:08-06:00", "utc": "2011-01-15T13:16:08Z", "ms": 1295097368257.3782 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-01-16", "window": { "start": { "local": "2011-01-16T07:15:41-06:00", "utc": "2011-01-16T13:15:41Z", "ms": 1295183740619.0212 }, "end": { "local": "2011-01-16T07:15:41-06:00", "utc": "2011-01-16T13:15:41Z", "ms": 1295183740619.0212 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:16 on Fri 14 Jan to 21:31 on Sat 15 Jan.", "fact": "2011-01-15T03:15:37Z → 2011-01-16T03:31:04Z" }, { "step": "kaala", "text": "Sunrise is at 07:16 on the 15th and 07:16 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 15th and is not on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35077 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Chicago, 2011: Saturday 15 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": "2011-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-01-15", "confidence": "determinate" } ], "quote": "In Chicago, Putradā Ekādaśī 2011 falls on Saturday 15 January. Ekādaśī runs from 21:16 on Fri 14 Jan to 21:31 on Sat 15 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-01-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-01-17", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-01-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3684, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-01-16T20:59:38-06:00", "utc": "2011-01-17T02:59:38Z", "ms": 1295233178092.6582 }, "end": { "local": "2011-01-17T19:43:40-06:00", "utc": "2011-01-18T01:43:40Z", "ms": 1295315019571.12 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-01-16T20:59:38-06:00", "utc": "2011-01-17T02:59:38Z", "ms": 1295233178092.6582 }, "end": { "local": "2011-01-17T19:43:40-06:00", "utc": "2011-01-18T01:43:40Z", "ms": 1295315019571.12 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-01-16", "window": { "start": { "local": "2011-01-16T16:45:20-06:00", "utc": "2011-01-16T22:45:20Z", "ms": 1295217920318.021 }, "end": { "local": "2011-01-16T18:41:19-06:00", "utc": "2011-01-17T00:41:19Z", "ms": 1295224879042.0872 } }, "covered_min": 0, "window_min": 116, "qualifies": false }, { "local_date": "2011-01-17", "window": { "start": { "local": "2011-01-17T16:46:31-06:00", "utc": "2011-01-17T22:46:31Z", "ms": 1295304390770.2222 }, "end": { "local": "2011-01-17T18:42:16-06:00", "utc": "2011-01-18T00:42:16Z", "ms": 1295311335823.7095 } }, "covered_min": 116, "window_min": 116, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:00 on Sun 16 Jan to 19:44 on Mon 17 Jan.", "fact": "2011-01-17T02:59:38Z → 2011-01-18T01:43:40Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:45–18:41 on the 16th, 16:47–18:42 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 116 minutes on the 16th and 116 of 116 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3684 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2011: Monday 17 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": "2011-01-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-01-17", "confidence": "boundary" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2011 falls on Monday 17 January. Trayodaśī runs from 21:00 on Sun 16 Jan to 19:44 on Mon 17 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-01-17", "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/2011/sankashta-chaturthi?on=2011-01-22", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-01-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23267, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-01-22T06:18:58-06:00", "utc": "2011-01-22T12:18:58Z", "ms": 1295698738071.041 }, "end": { "local": "2011-01-23T03:15:20-06:00", "utc": "2011-01-23T09:15:20Z", "ms": 1295774119958.7786 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-01-22T06:18:58-06:00", "utc": "2011-01-22T12:18:58Z", "ms": 1295698738071.041 }, "end": { "local": "2011-01-23T03:15:20-06:00", "utc": "2011-01-23T09:15:20Z", "ms": 1295774119958.7786 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-01-21", "window": { "start": { "local": "2011-01-21T19:32:06-06:00", "utc": "2011-01-22T01:32:06Z", "ms": 1295659925754.2107 }, "end": { "local": "2011-01-21T19:32:06-06:00", "utc": "2011-01-22T01:32:06Z", "ms": 1295659925754.2107 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-01-22", "window": { "start": { "local": "2011-01-22T20:47:33-06:00", "utc": "2011-01-23T02:47:33Z", "ms": 1295750852711.304 }, "end": { "local": "2011-01-22T20:47:33-06:00", "utc": "2011-01-23T02:47:33Z", "ms": 1295750852711.304 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:19 on Sat 22 Jan to 03:15 on Sun 23 Jan.", "fact": "2011-01-22T12:18:58Z → 2011-01-23T09:15:20Z" }, { "step": "kaala", "text": "Moonrise is at 19:32 on the 21st and 20:48 on the 22nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 21st and is on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23267 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2011: Saturday 22 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": "2011-01-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-01-22", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2011 falls on Saturday 22 January. Caturthī runs from 06:19 on Sat 22 Jan to 03:15 on Sun 23 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/sankashta-chaturthi?on=2011-01-22", "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/2011/ekadashi?on=2011-01-29", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-01-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33866, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-01-28T16:34:47-06:00", "utc": "2011-01-28T22:34:47Z", "ms": 1296254086714.635 }, "end": { "local": "2011-01-29T16:30:55-06:00", "utc": "2011-01-29T22:30:55Z", "ms": 1296340254521.5176 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-01-28T16:34:47-06:00", "utc": "2011-01-28T22:34:47Z", "ms": 1296254086714.635 }, "end": { "local": "2011-01-29T16:30:55-06:00", "utc": "2011-01-29T22:30:55Z", "ms": 1296340254521.5176 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-01-28", "window": { "start": { "local": "2011-01-28T07:07:23-06:00", "utc": "2011-01-28T13:07:23Z", "ms": 1296220043031.135 }, "end": { "local": "2011-01-28T07:07:23-06:00", "utc": "2011-01-28T13:07:23Z", "ms": 1296220043031.135 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-01-29", "window": { "start": { "local": "2011-01-29T07:06:29-06:00", "utc": "2011-01-29T13:06:29Z", "ms": 1296306388683.7756 }, "end": { "local": "2011-01-29T07:06:29-06:00", "utc": "2011-01-29T13:06:29Z", "ms": 1296306388683.7756 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:35 on Fri 28 Jan to 16:31 on Sat 29 Jan.", "fact": "2011-01-28T22:34:47Z → 2011-01-29T22:30:55Z" }, { "step": "kaala", "text": "Sunrise is at 07:07 on the 28th and 07:06 on the 29th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 28th and is on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33866 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Chicago, 2011: Saturday 29 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-01-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-01-29", "confidence": "determinate" } ], "quote": "In Chicago, Ṣaṭtilā Ekādaśī 2011 falls on Saturday 29 January. Ekādaśī runs from 16:35 on Fri 28 Jan to 16:31 on Sat 29 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-01-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-01-30", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-01-30", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 477, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-01-30T16:54:43-06:00", "utc": "2011-01-30T22:54:43Z", "ms": 1296428082748.3896 }, "end": { "local": "2011-01-31T17:43:55-06:00", "utc": "2011-01-31T23:43:55Z", "ms": 1296517434841.2246 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-01-30T16:54:43-06:00", "utc": "2011-01-30T22:54:43Z", "ms": 1296428082748.3896 }, "end": { "local": "2011-01-31T17:43:55-06:00", "utc": "2011-01-31T23:43:55Z", "ms": 1296517434841.2246 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-01-30", "window": { "start": { "local": "2011-01-30T17:02:39-06:00", "utc": "2011-01-30T23:02:39Z", "ms": 1296428559336.6318 }, "end": { "local": "2011-01-30T18:54:55-06:00", "utc": "2011-01-31T00:54:55Z", "ms": 1296435294696.8132 } }, "covered_min": 112, "window_min": 112, "qualifies": true }, { "local_date": "2011-01-31", "window": { "start": { "local": "2011-01-31T17:03:56-06:00", "utc": "2011-01-31T23:03:56Z", "ms": 1296515036317.0195 }, "end": { "local": "2011-01-31T18:55:53-06:00", "utc": "2011-02-01T00:55:53Z", "ms": 1296521753448.9355 } }, "covered_min": 40, "window_min": 112, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 16:55 on Sun 30 Jan to 17:44 on Mon 31 Jan.", "fact": "2011-01-30T22:54:43Z → 2011-01-31T23:43:55Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:03–18:55 on the 30th, 17:04–18:56 on the 31st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 112 of 112 minutes on the 30th and 40 of 112 on the 31st.", "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 477 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2011: Sunday 30 January.", "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": "2011-01-30", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-01-30", "confidence": "boundary" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2011 falls on Sunday 30 January. Trayodaśī runs from 16:55 on Sun 30 Jan to 17:44 on Mon 31 Jan and covers all of pradoṣa that evening. It also reaches the next evening for 40 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-01-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/shivaratri?on=2011-01-31", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-01-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17005, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-01-31T17:43:55-06:00", "utc": "2011-01-31T23:43:55Z", "ms": 1296517434841.2246 }, "end": { "local": "2011-02-01T18:56:28-06:00", "utc": "2011-02-02T00:56:28Z", "ms": 1296608188209.0337 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-01-31T17:43:55-06:00", "utc": "2011-01-31T23:43:55Z", "ms": 1296517434841.2246 }, "end": { "local": "2011-02-01T18:56:28-06:00", "utc": "2011-02-02T00:56:28Z", "ms": 1296608188209.0337 } }, "kaala": "nishita", "days": [ { "local_date": "2011-01-31", "window": { "start": { "local": "2011-01-31T23:39:46-06:00", "utc": "2011-02-01T05:39:46Z", "ms": 1296538785561.7048 }, "end": { "local": "2011-02-01T00:27:46-06:00", "utc": "2011-02-01T06:27:46Z", "ms": 1296541665561.7048 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-02-01", "window": { "start": { "local": "2011-02-01T23:39:53-06:00", "utc": "2011-02-02T05:39:53Z", "ms": 1296625193388.5605 }, "end": { "local": "2011-02-02T00:27:53-06:00", "utc": "2011-02-02T06:27:53Z", "ms": 1296628073388.5605 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:44 on Mon 31 Jan to 18:56 on Tue 1 Feb.", "fact": "2011-01-31T23:43:55Z → 2011-02-02T00:56:28Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:40–00:28 on the 31st, 23:40–00:28 on the 1st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 31st and 0 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17005 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2011: Monday 31 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": "2011-01-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-01-31", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2011 falls on Monday 31 January. Caturdaśī runs from 17:44 on Mon 31 Jan to 18:56 on Tue 1 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/shivaratri?on=2011-01-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-02-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36866, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-01-31T17:43:55-06:00", "utc": "2011-01-31T23:43:55Z", "ms": 1296517434841.2246 }, "end": { "local": "2011-02-01T18:56:28-06:00", "utc": "2011-02-02T00:56:28Z", "ms": 1296608188209.0337 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-01-31T17:43:55-06:00", "utc": "2011-01-31T23:43:55Z", "ms": 1296517434841.2246 }, "end": { "local": "2011-02-01T18:56:28-06:00", "utc": "2011-02-02T00:56:28Z", "ms": 1296608188209.0337 } }, "kaala": "arunodaya", "days": [ { "local_date": "2011-02-01", "window": { "start": { "local": "2011-02-01T05:11:38-06:00", "utc": "2011-02-01T11:11:38Z", "ms": 1296558697674.474 }, "end": { "local": "2011-02-01T07:03:35-06:00", "utc": "2011-02-01T13:03:35Z", "ms": 1296565414806.3901 } }, "covered_min": 112, "window_min": 112, "qualifies": true }, { "local_date": "2011-02-02", "window": { "start": { "local": "2011-02-02T05:10:55-06:00", "utc": "2011-02-02T11:10:55Z", "ms": 1296645054691.3896 }, "end": { "local": "2011-02-02T07:02:33-06:00", "utc": "2011-02-02T13:02:33Z", "ms": 1296651753346.9639 } }, "covered_min": 0, "window_min": 112, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:44 on Mon 31 Jan to 18:56 on Tue 1 Feb.", "fact": "2011-01-31T23:43:55Z → 2011-02-02T00:56:28Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:12–07:04 on the 1st, 05:11–07:03 on the 2nd.", "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 112 of 112 minutes on the 1st and 0 of 112 on the 2nd.", "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 36866 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Chicago, 2011: Tuesday 1 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Yama tarpana (covering a period of 4 ghatikas before sunrise)" } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-02-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-02-01", "confidence": "determinate" } ], "quote": "In Chicago, Yama Tarpaṇa 2011 falls on Tuesday 1 February. Caturdaśī runs from 17:44 on Mon 31 Jan to 18:56 on Tue 1 Feb and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-02-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21898, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-02-06T03:02:15-06:00", "utc": "2011-02-06T09:02:15Z", "ms": 1296982935212.2212 }, "end": { "local": "2011-02-07T05:36:01-06:00", "utc": "2011-02-07T11:36:01Z", "ms": 1297078560752.7102 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-02-06T03:02:15-06:00", "utc": "2011-02-06T09:02:15Z", "ms": 1296982935212.2212 }, "end": { "local": "2011-02-07T05:36:01-06:00", "utc": "2011-02-07T11:36:01Z", "ms": 1297078560752.7102 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-02-06", "window": { "start": { "local": "2011-02-06T11:40:55-06:00", "utc": "2011-02-06T17:40:55Z", "ms": 1297014055277.2815 }, "end": { "local": "2011-02-06T12:28:55-06:00", "utc": "2011-02-06T18:28:55Z", "ms": 1297016935277.2815 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-02-07", "window": { "start": { "local": "2011-02-07T11:40:59-06:00", "utc": "2011-02-07T17:40:59Z", "ms": 1297100459050.8774 }, "end": { "local": "2011-02-07T12:28:59-06:00", "utc": "2011-02-07T18:28:59Z", "ms": 1297103339050.8774 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:02 on Sun 6 Feb to 05:36 on Mon 7 Feb.", "fact": "2011-02-06T09:02:15Z → 2011-02-07T11:36:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 6th, 11:41–12:29 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 21898 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Chicago, 2011: Sunday 6 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-02-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-02-06", "confidence": "determinate" } ], "quote": "In Chicago, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 2011 falls on Sunday 6 February. Caturthī runs from 03:02 on Sun 6 Feb to 05:36 on Mon 7 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-02-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28890, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-02-06T03:02:15-06:00", "utc": "2011-02-06T09:02:15Z", "ms": 1296982935212.2212 }, "end": { "local": "2011-02-07T05:36:01-06:00", "utc": "2011-02-07T11:36:01Z", "ms": 1297078560752.7102 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-02-06T03:02:15-06:00", "utc": "2011-02-06T09:02:15Z", "ms": 1296982935212.2212 }, "end": { "local": "2011-02-07T05:36:01-06:00", "utc": "2011-02-07T11:36:01Z", "ms": 1297078560752.7102 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-02-05", "window": { "start": { "local": "2011-02-05T17:10:22-06:00", "utc": "2011-02-05T23:10:22Z", "ms": 1296947422432.9536 }, "end": { "local": "2011-02-05T19:00:45-06:00", "utc": "2011-02-06T01:00:45Z", "ms": 1296954044896.522 } }, "covered_min": 0, "window_min": 110, "qualifies": false }, { "local_date": "2011-02-06", "window": { "start": { "local": "2011-02-06T17:11:40-06:00", "utc": "2011-02-06T23:11:40Z", "ms": 1297033899644.8472 }, "end": { "local": "2011-02-06T19:01:43-06:00", "utc": "2011-02-07T01:01:43Z", "ms": 1297040502535.3853 } }, "covered_min": 110, "window_min": 110, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:02 on Sun 6 Feb to 05:36 on Mon 7 Feb.", "fact": "2011-02-06T09:02:15Z → 2011-02-07T11:36:01Z" }, { "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": "Caturthī must be present during pradoṣa. It covers 0 of 110 minutes on the 5th and 110 of 110 on the 6th.", "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 28890 s" }, { "step": "ruling", "text": "Tila Caturthī, Chicago, 2011: Sunday 6 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "tila-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-02-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-02-06", "confidence": "determinate" } ], "quote": "In Chicago, Tila Caturthī 2011 falls on Sunday 6 February. Caturthī runs from 03:02 on Sun 6 Feb to 05:36 on Mon 7 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-02-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12698, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2011-02-07T05:36:01-06:00", "utc": "2011-02-07T11:36:01Z", "ms": 1297078560752.7102 }, "end": { "local": "2011-02-08T08:09:24-06:00", "utc": "2011-02-08T14:09:24Z", "ms": 1297174163707.1465 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-02-07T05:36:01-06:00", "utc": "2011-02-07T11:36:01Z", "ms": 1297078560752.7102 }, "end": { "local": "2011-02-08T08:09:24-06:00", "utc": "2011-02-08T14:09:24Z", "ms": 1297174163707.1465 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-02-07", "window": { "start": { "local": "2011-02-07T11:40:59-06:00", "utc": "2011-02-07T17:40:59Z", "ms": 1297100459050.8774 }, "end": { "local": "2011-02-07T12:28:59-06:00", "utc": "2011-02-07T18:28:59Z", "ms": 1297103339050.8774 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-02-08", "window": { "start": { "local": "2011-02-08T11:41:02-06:00", "utc": "2011-02-08T17:41:02Z", "ms": 1297186862011.1152 }, "end": { "local": "2011-02-08T12:29:02-06:00", "utc": "2011-02-08T18:29:02Z", "ms": 1297189742011.1152 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:36 on Mon 7 Feb to 08:09 on Tue 8 Feb.", "fact": "2011-02-07T11:36:01Z → 2011-02-08T14:09:24Z" }, { "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": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 12698 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Chicago, 2011: Monday 7 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-02-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-02-07", "confidence": "determinate" } ], "quote": "In Chicago, Śrī Pañcamī 2011 falls on Monday 7 February. Pañcamī runs from 05:36 on Mon 7 Feb to 08:09 on Tue 8 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-02-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12698, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2011-02-07T05:36:01-06:00", "utc": "2011-02-07T11:36:01Z", "ms": 1297078560752.7102 }, "end": { "local": "2011-02-08T08:09:24-06:00", "utc": "2011-02-08T14:09:24Z", "ms": 1297174163707.1465 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-02-07T05:36:01-06:00", "utc": "2011-02-07T11:36:01Z", "ms": 1297078560752.7102 }, "end": { "local": "2011-02-08T08:09:24-06:00", "utc": "2011-02-08T14:09:24Z", "ms": 1297174163707.1465 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-02-07", "window": { "start": { "local": "2011-02-07T11:40:59-06:00", "utc": "2011-02-07T17:40:59Z", "ms": 1297100459050.8774 }, "end": { "local": "2011-02-07T12:28:59-06:00", "utc": "2011-02-07T18:28:59Z", "ms": 1297103339050.8774 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-02-08", "window": { "start": { "local": "2011-02-08T11:41:02-06:00", "utc": "2011-02-08T17:41:02Z", "ms": 1297186862011.1152 }, "end": { "local": "2011-02-08T12:29:02-06:00", "utc": "2011-02-08T18:29:02Z", "ms": 1297189742011.1152 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:36 on Mon 7 Feb to 08:09 on Tue 8 Feb.", "fact": "2011-02-07T11:36:01Z → 2011-02-08T14:09:24Z" }, { "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": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12698 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Chicago, 2011: Monday 7 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasanta-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-02-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-02-07", "confidence": "determinate" } ], "quote": "In Chicago, Vasanta Pañcamī 2011 falls on Monday 7 February. Pañcamī runs from 05:36 on Mon 7 Feb to 08:09 on Tue 8 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-02-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13023, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2011-02-09T10:31:41-06:00", "utc": "2011-02-09T16:31:41Z", "ms": 1297269101066.6433 }, "end": { "local": "2011-02-10T12:30:56-06:00", "utc": "2011-02-10T18:30:56Z", "ms": 1297362656354.9375 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-02-09T10:31:41-06:00", "utc": "2011-02-09T16:31:41Z", "ms": 1297269101066.6433 }, "end": { "local": "2011-02-10T12:30:56-06:00", "utc": "2011-02-10T18:30:56Z", "ms": 1297362656354.9375 } }, "kaala": "arunodaya", "days": [ { "local_date": "2011-02-09", "window": { "start": { "local": "2011-02-09T05:05:14-06:00", "utc": "2011-02-09T11:05:14Z", "ms": 1297249514452.2778 }, "end": { "local": "2011-02-09T06:54:38-06:00", "utc": "2011-02-09T12:54:38Z", "ms": 1297256077628.9402 } }, "covered_min": 0, "window_min": 109, "qualifies": false }, { "local_date": "2011-02-10", "window": { "start": { "local": "2011-02-10T05:04:21-06:00", "utc": "2011-02-10T11:04:21Z", "ms": 1297335860539.68 }, "end": { "local": "2011-02-10T06:53:24-06:00", "utc": "2011-02-10T12:53:24Z", "ms": 1297342403592.3777 } }, "covered_min": 109, "window_min": 109, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 10:32 on Wed 9 Feb to 12:31 on Thu 10 Feb.", "fact": "2011-02-09T16:31:41Z → 2011-02-10T18:30:56Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:05–06:55 on the 9th, 05:04–06:53 on the 10th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during aruṇodaya. It covers 0 of 109 minutes on the 9th and 109 of 109 on the 10th.", "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 13023 s" }, { "step": "ruling", "text": "Ratha Saptamī, Chicago, 2011: Thursday 10 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-02-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-02-10", "confidence": "determinate" } ], "quote": "In Chicago, Ratha Saptamī 2011 falls on Thursday 10 February. Saptamī runs from 10:32 on Wed 9 Feb to 12:31 on Thu 10 Feb and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-02-14", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-02-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24005, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-02-13T14:27:56-06:00", "utc": "2011-02-13T20:27:56Z", "ms": 1297628876144.4814 }, "end": { "local": "2011-02-14T13:28:19-06:00", "utc": "2011-02-14T19:28:19Z", "ms": 1297711698516.7866 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-02-13T14:27:56-06:00", "utc": "2011-02-13T20:27:56Z", "ms": 1297628876144.4814 }, "end": { "local": "2011-02-14T13:28:19-06:00", "utc": "2011-02-14T19:28:19Z", "ms": 1297711698516.7866 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-02-13", "window": { "start": { "local": "2011-02-13T06:49:33-06:00", "utc": "2011-02-13T12:49:33Z", "ms": 1297601373168.4875 }, "end": { "local": "2011-02-13T06:49:33-06:00", "utc": "2011-02-13T12:49:33Z", "ms": 1297601373168.4875 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-02-14", "window": { "start": { "local": "2011-02-14T06:48:14-06:00", "utc": "2011-02-14T12:48:14Z", "ms": 1297687693713.9082 }, "end": { "local": "2011-02-14T06:48:14-06:00", "utc": "2011-02-14T12:48:14Z", "ms": 1297687693713.9082 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:28 on Sun 13 Feb to 13:28 on Mon 14 Feb.", "fact": "2011-02-13T20:27:56Z → 2011-02-14T19:28:19Z" }, { "step": "kaala", "text": "Sunrise is at 06:50 on the 13th and 06:48 on the 14th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 13th and is on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24005 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Chicago, 2011: Monday 14 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": "2011-02-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-02-14", "confidence": "determinate" } ], "quote": "In Chicago, Jayā Ekādaśī 2011 falls on Monday 14 February. Ekādaśī runs from 14:28 on Sun 13 Feb to 13:28 on Mon 14 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-02-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-02-15", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 48, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2011-02-14T13:28:19-06:00", "utc": "2011-02-14T19:28:19Z", "ms": 1297711698516.7866 }, "end": { "local": "2011-02-15T11:40:12-06:00", "utc": "2011-02-15T17:40:12Z", "ms": 1297791612277.2014 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-02-14T13:28:19-06:00", "utc": "2011-02-14T19:28:19Z", "ms": 1297711698516.7866 }, "end": { "local": "2011-02-15T11:40:12-06:00", "utc": "2011-02-15T17:40:12Z", "ms": 1297791612277.2014 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-02-14", "window": { "start": { "local": "2011-02-14T11:41:03-06:00", "utc": "2011-02-14T17:41:03Z", "ms": 1297705263060.0518 }, "end": { "local": "2011-02-14T12:29:03-06:00", "utc": "2011-02-14T18:29:03Z", "ms": 1297708143060.0518 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-02-15", "window": { "start": { "local": "2011-02-15T11:41:01-06:00", "utc": "2011-02-15T17:41:01Z", "ms": 1297791660537.7007 }, "end": { "local": "2011-02-15T12:29:01-06:00", "utc": "2011-02-15T18:29:01Z", "ms": 1297794540537.7007 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 13:28 on Mon 14 Feb to 11:40 on Tue 15 Feb.", "fact": "2011-02-14T19:28:19Z → 2011-02-15T17:40:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 14th, 11:41–12:29 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: purvaviddha → second-day · margin 48 s < 300 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Chicago, 2011: Tuesday 15 February.", "fact": "confidence: boundary (margin)" } ], "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": "2011-02-15", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-02-15", "confidence": "determinate" } ], "quote": "In Chicago, Bhīṣma Dvādaśī 2011 falls on Tuesday 15 February. Dvādaśī runs from 13:28 on Mon 14 Feb to 11:40 on Tue 15 Feb, and reaches madhyāhna on neither day. It is 0 min 48 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/pradosha-vrata?on=2011-02-15", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-02-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20576, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-02-15T11:40:12-06:00", "utc": "2011-02-15T17:40:12Z", "ms": 1297791612277.2014 }, "end": { "local": "2011-02-16T09:09:32-06:00", "utc": "2011-02-16T15:09:32Z", "ms": 1297868971512.889 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-02-15T11:40:12-06:00", "utc": "2011-02-15T17:40:12Z", "ms": 1297791612277.2014 }, "end": { "local": "2011-02-16T09:09:32-06:00", "utc": "2011-02-16T15:09:32Z", "ms": 1297868971512.889 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-02-15", "window": { "start": { "local": "2011-02-15T17:23:08-06:00", "utc": "2011-02-15T23:23:08Z", "ms": 1297812188076.0715 }, "end": { "local": "2011-02-15T19:10:07-06:00", "utc": "2011-02-16T01:10:07Z", "ms": 1297818607141.024 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "2011-02-16", "window": { "start": { "local": "2011-02-16T17:24:23-06:00", "utc": "2011-02-16T23:24:23Z", "ms": 1297898663493.9983 }, "end": { "local": "2011-02-16T19:11:01-06:00", "utc": "2011-02-17T01:11:01Z", "ms": 1297905061420.69 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:40 on Tue 15 Feb to 09:10 on Wed 16 Feb.", "fact": "2011-02-15T17:40:12Z → 2011-02-16T15:09:32Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:23–19:10 on the 15th, 17:24–19:11 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 107 of 107 minutes on the 15th and 0 of 107 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 20576 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2011: Tuesday 15 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": "2011-02-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-02-15", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2011 falls on Tuesday 15 February. Trayodaśī runs from 11:40 on Tue 15 Feb to 09:10 on Wed 16 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-02-15", "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/2011/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-02-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20173, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-02-17T06:04:40-06:00", "utc": "2011-02-17T12:04:40Z", "ms": 1297944279974.1526 }, "end": { "local": "2011-02-18T02:35:40-06:00", "utc": "2011-02-18T08:35:40Z", "ms": 1298018140132.3408 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2011-02-17T06:04:40-06:00", "utc": "2011-02-17T12:04:40Z", "ms": 1297944279974.1526 }, "end": { "local": "2011-02-18T02:35:40-06:00", "utc": "2011-02-18T08:35:40Z", "ms": 1298018140132.3408 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-02-17", "window": { "start": { "local": "2011-02-17T11:40:53-06:00", "utc": "2011-02-17T17:40:53Z", "ms": 1297964453299.064 }, "end": { "local": "2011-02-17T12:28:53-06:00", "utc": "2011-02-17T18:28:53Z", "ms": 1297967333299.064 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-02-18", "window": { "start": { "local": "2011-02-18T11:40:49-06:00", "utc": "2011-02-18T17:40:49Z", "ms": 1298050848616.803 }, "end": { "local": "2011-02-18T12:28:49-06:00", "utc": "2011-02-18T18:28:49Z", "ms": 1298053728616.803 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:05 on Thu 17 Feb to 02:36 on Fri 18 Feb.", "fact": "2011-02-17T12:04:40Z → 2011-02-18T08:35:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 17th, 11:41–12:29 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20173 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Chicago, 2011: Thursday 17 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": "2011-02-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-02-17", "confidence": "determinate" } ], "quote": "In Chicago, Māghī Pūrṇimā 2011 falls on Thursday 17 February. Pūrṇimā runs from 06:05 on Thu 17 Feb to 02:36 on Fri 18 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/sankashta-chaturthi?on=2011-02-20", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-02-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19327, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-02-20T15:34:39-06:00", "utc": "2011-02-20T21:34:39Z", "ms": 1298237678876.7307 }, "end": { "local": "2011-02-21T12:19:32-06:00", "utc": "2011-02-21T18:19:32Z", "ms": 1298312371651.603 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2011-02-20T15:34:39-06:00", "utc": "2011-02-20T21:34:39Z", "ms": 1298237678876.7307 }, "end": { "local": "2011-02-21T12:19:32-06:00", "utc": "2011-02-21T18:19:32Z", "ms": 1298312371651.603 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-02-20", "window": { "start": { "local": "2011-02-20T20:56:46-06:00", "utc": "2011-02-21T02:56:46Z", "ms": 1298257005681.66 }, "end": { "local": "2011-02-20T20:56:46-06:00", "utc": "2011-02-21T02:56:46Z", "ms": 1298257005681.66 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-02-21", "window": { "start": { "local": "2011-02-21T22:13:02-06:00", "utc": "2011-02-22T04:13:02Z", "ms": 1298347981807.1 }, "end": { "local": "2011-02-21T22:13:02-06:00", "utc": "2011-02-22T04:13:02Z", "ms": 1298347981807.1 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:35 on Sun 20 Feb to 12:20 on Mon 21 Feb.", "fact": "2011-02-20T21:34:39Z → 2011-02-21T18:19:32Z" }, { "step": "kaala", "text": "Moonrise is at 20:57 on the 20th and 22:13 on the 21st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 20th and is not on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19327 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2011: Sunday 20 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": "2011-02-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-02-20", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2011 falls on Sunday 20 February. Caturthī runs from 15:35 on Sun 20 Feb to 12:20 on Mon 21 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/sankashta-chaturthi?on=2011-02-20", "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/2011/ekadashi?on=2011-02-28", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-02-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1225, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-02-27T05:40:29-06:00", "utc": "2011-02-27T11:40:29Z", "ms": 1298806828947.2898 }, "end": { "local": "2011-02-28T06:48:12-06:00", "utc": "2011-02-28T12:48:12Z", "ms": 1298897291542.1863 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2011-02-27T05:40:29-06:00", "utc": "2011-02-27T11:40:29Z", "ms": 1298806828947.2898 }, "end": { "local": "2011-02-28T06:48:12-06:00", "utc": "2011-02-28T12:48:12Z", "ms": 1298897291542.1863 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-02-27", "window": { "start": { "local": "2011-02-27T06:29:20-06:00", "utc": "2011-02-27T12:29:20Z", "ms": 1298809760110.7488 }, "end": { "local": "2011-02-27T06:29:20-06:00", "utc": "2011-02-27T12:29:20Z", "ms": 1298809760110.7488 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-02-28", "window": { "start": { "local": "2011-02-28T06:27:46-06:00", "utc": "2011-02-28T12:27:46Z", "ms": 1298896066475.915 }, "end": { "local": "2011-02-28T06:27:46-06:00", "utc": "2011-02-28T12:27:46Z", "ms": 1298896066475.915 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:40 on Sun 27 Feb to 06:48 on Mon 28 Feb.", "fact": "2011-02-27T11:40:29Z → 2011-02-28T12:48:12Z" }, { "step": "kaala", "text": "Sunrise is at 06:29 on the 27th and 06:28 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 27th and is on the 28th.", "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 1225 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Chicago, 2011: Monday 28 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-02-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-02-28", "confidence": "determinate" } ], "quote": "In Chicago, Vijayā Ekādaśī 2011 falls on Monday 28 February. Ekādaśī runs from 05:40 on Sun 27 Feb to 06:48 on Mon 28 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-02-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-03-01", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-03-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26702, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-03-01T08:22:14-06:00", "utc": "2011-03-01T14:22:14Z", "ms": 1298989334322.5718 }, "end": { "local": "2011-03-02T10:16:29-06:00", "utc": "2011-03-02T16:16:29Z", "ms": 1299082589116.1807 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2011-03-01T08:22:14-06:00", "utc": "2011-03-01T14:22:14Z", "ms": 1298989334322.5718 }, "end": { "local": "2011-03-02T10:16:29-06:00", "utc": "2011-03-02T16:16:29Z", "ms": 1299082589116.1807 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-03-01", "window": { "start": { "local": "2011-03-01T17:40:20-06:00", "utc": "2011-03-01T23:40:20Z", "ms": 1299022819879.0205 }, "end": { "local": "2011-03-01T19:22:14-06:00", "utc": "2011-03-02T01:22:14Z", "ms": 1299028934163.1086 } }, "covered_min": 102, "window_min": 102, "qualifies": true }, { "local_date": "2011-03-02", "window": { "start": { "local": "2011-03-02T17:41:32-06:00", "utc": "2011-03-02T23:41:32Z", "ms": 1299109291525.85 }, "end": { "local": "2011-03-02T19:23:03-06:00", "utc": "2011-03-03T01:23:03Z", "ms": 1299115383488.0774 } }, "covered_min": 0, "window_min": 102, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:22 on Tue 1 Mar to 10:16 on Wed 2 Mar.", "fact": "2011-03-01T14:22:14Z → 2011-03-02T16:16:29Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:40–19:22 on the 1st, 17:42–19:23 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 102 of 102 minutes on the 1st and 0 of 102 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 26702 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2011: Tuesday 1 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": "2011-03-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-03-01", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2011 falls on Tuesday 1 March. Trayodaśī runs from 08:22 on Tue 1 Mar to 10:16 on Wed 2 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-03-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-03-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35401, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-03-02T10:16:29-06:00", "utc": "2011-03-02T16:16:29Z", "ms": 1299082589116.1807 }, "end": { "local": "2011-03-03T12:25:45-06:00", "utc": "2011-03-03T18:25:45Z", "ms": 1299176744535.4734 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2011-03-02T10:16:29-06:00", "utc": "2011-03-02T16:16:29Z", "ms": 1299082589116.1807 }, "end": { "local": "2011-03-03T12:25:45-06:00", "utc": "2011-03-03T18:25:45Z", "ms": 1299176744535.4734 } }, "kaala": "nishita", "days": [ { "local_date": "2011-03-01", "window": { "start": { "local": "2011-03-01T23:38:28-06:00", "utc": "2011-03-02T05:38:28Z", "ms": 1299044308444.3516 }, "end": { "local": "2011-03-02T00:26:28-06:00", "utc": "2011-03-02T06:26:28Z", "ms": 1299047188444.3516 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-03-02", "window": { "start": { "local": "2011-03-02T23:38:16-06:00", "utc": "2011-03-03T05:38:16Z", "ms": 1299130696384.2021 }, "end": { "local": "2011-03-03T00:26:16-06:00", "utc": "2011-03-03T06:26:16Z", "ms": 1299133576384.2021 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:16 on Wed 2 Mar to 12:26 on Thu 3 Mar.", "fact": "2011-03-02T16:16:29Z → 2011-03-03T18:25:45Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:38–00:26 on the 1st, 23:38–00:26 on the 2nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 35401 s" }, { "step": "ruling", "text": "Mahāśivarātri, Chicago, 2011: Wednesday 2 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "maha-shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Mahasivaratri (nisithavyapini) — In some opinion it is to be observed on nisitha and in some opinion on pradosa. If occurs on two successive nisithas then according to Hemadri it is to be observed on the first day and according to Madhava, to be observed on the second day" } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "disputed", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-03-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-03-02", "confidence": "determinate" } ], "quote": "In Chicago, Mahāśivarātri 2011 falls on Wednesday 2 March. Caturdaśī runs from 10:16 on Wed 2 Mar to 12:26 on Thu 3 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/vinayaka-chaturthi?on=2011-03-08", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-03-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35304, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-03-07T22:14:23-06:00", "utc": "2011-03-08T04:14:23Z", "ms": 1299557663063.881 }, "end": { "local": "2011-03-09T00:36:39-06:00", "utc": "2011-03-09T06:36:39Z", "ms": 1299652598514.2573 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2011-03-07T22:14:23-06:00", "utc": "2011-03-08T04:14:23Z", "ms": 1299557663063.881 }, "end": { "local": "2011-03-09T00:36:39-06:00", "utc": "2011-03-09T06:36:39Z", "ms": 1299652598514.2573 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-03-07", "window": { "start": { "local": "2011-03-07T11:37:59-06:00", "utc": "2011-03-07T17:37:59Z", "ms": 1299519478753.1948 }, "end": { "local": "2011-03-07T12:25:59-06:00", "utc": "2011-03-07T18:25:59Z", "ms": 1299522358753.1948 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-03-08", "window": { "start": { "local": "2011-03-08T11:37:44-06:00", "utc": "2011-03-08T17:37:44Z", "ms": 1299605864381.7056 }, "end": { "local": "2011-03-08T12:25:44-06:00", "utc": "2011-03-08T18:25:44Z", "ms": 1299608744381.7056 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:14 on Mon 7 Mar to 00:37 on Wed 9 Mar.", "fact": "2011-03-08T04:14:23Z → 2011-03-09T06:36:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 7th, 11:38–12:26 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35304 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2011: Tuesday 8 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": "2011-03-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-03-08", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2011 falls on Tuesday 8 March. Caturthī runs from 22:14 on Mon 7 Mar to 00:37 on Wed 9 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/vinayaka-chaturthi?on=2011-03-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/ekadashi?on=2011-03-15", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-03-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7078, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-03-15T05:05:12-05:00", "utc": "2011-03-15T10:05:12Z", "ms": 1300183512261.5276 }, "end": { "local": "2011-03-16T02:59:56-05:00", "utc": "2011-03-16T07:59:56Z", "ms": 1300262395563.8376 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2011-03-15T05:05:12-05:00", "utc": "2011-03-15T10:05:12Z", "ms": 1300183512261.5276 }, "end": { "local": "2011-03-16T02:59:56-05:00", "utc": "2011-03-16T07:59:56Z", "ms": 1300262395563.8376 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-03-15", "window": { "start": { "local": "2011-03-15T07:03:10-05:00", "utc": "2011-03-15T12:03:10Z", "ms": 1300190590384.0981 }, "end": { "local": "2011-03-15T07:03:10-05:00", "utc": "2011-03-15T12:03:10Z", "ms": 1300190590384.0981 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-03-16", "window": { "start": { "local": "2011-03-16T07:01:29-05:00", "utc": "2011-03-16T12:01:29Z", "ms": 1300276888610.236 }, "end": { "local": "2011-03-16T07:01:29-05:00", "utc": "2011-03-16T12:01:29Z", "ms": 1300276888610.236 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:05 on Tue 15 Mar to 03:00 on Wed 16 Mar.", "fact": "2011-03-15T10:05:12Z → 2011-03-16T07:59:56Z" }, { "step": "kaala", "text": "Sunrise is at 07:03 on the 15th and 07:01 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 15th and is not on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7078 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Chicago, 2011: Tuesday 15 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": "2011-03-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-03-15", "confidence": "determinate" } ], "quote": "In Chicago, Āmalakī Ekādaśī 2011 falls on Tuesday 15 March. Ekādaśī runs from 05:05 on Tue 15 Mar to 03:00 on Wed 16 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-03-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-03-17", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-03-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1003, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-03-17T00:12:34-05:00", "utc": "2011-03-17T05:12:34Z", "ms": 1300338754034.5808 }, "end": { "local": "2011-03-17T20:51:30-05:00", "utc": "2011-03-18T01:51:30Z", "ms": 1300413089954.0073 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2011-03-17T00:12:34-05:00", "utc": "2011-03-17T05:12:34Z", "ms": 1300338754034.5808 }, "end": { "local": "2011-03-17T20:51:30-05:00", "utc": "2011-03-18T01:51:30Z", "ms": 1300413089954.0073 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-03-16", "window": { "start": { "local": "2011-03-16T18:57:46-05:00", "utc": "2011-03-16T23:57:46Z", "ms": 1300319865674.0781 }, "end": { "local": "2011-03-16T20:34:02-05:00", "utc": "2011-03-17T01:34:02Z", "ms": 1300325641796.572 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "2011-03-17", "window": { "start": { "local": "2011-03-17T18:58:53-05:00", "utc": "2011-03-17T23:58:53Z", "ms": 1300406333404.5276 }, "end": { "local": "2011-03-17T20:34:47-05:00", "utc": "2011-03-18T01:34:47Z", "ms": 1300412086865.8232 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:13 on Thu 17 Mar to 20:51 on Thu 17 Mar.", "fact": "2011-03-17T05:12:34Z → 2011-03-18T01:51:30Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:58–20:34 on the 16th, 18:59–20:35 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 96 minutes on the 16th and 96 of 96 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1003 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2011: Thursday 17 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": "2011-03-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-03-17", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2011 falls on Thursday 17 March. Trayodaśī runs from 00:13 on Thu 17 Mar to 20:51 on Thu 17 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-03-17", "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/2011/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-03-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1877, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-03-18T17:06:54-05:00", "utc": "2011-03-18T22:06:54Z", "ms": 1300486014241.1172 }, "end": { "local": "2011-03-19T13:10:03-05:00", "utc": "2011-03-19T18:10:03Z", "ms": 1300558203493.3623 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2011-03-18T17:06:54-05:00", "utc": "2011-03-18T22:06:54Z", "ms": 1300486014241.1172 }, "end": { "local": "2011-03-19T13:10:03-05:00", "utc": "2011-03-19T18:10:03Z", "ms": 1300558203493.3623 } }, "kaala": "sayahna", "days": [ { "local_date": "2011-03-18", "window": { "start": { "local": "2011-03-18T16:35:38-05:00", "utc": "2011-03-18T21:35:38Z", "ms": 1300484137627.5464 }, "end": { "local": "2011-03-18T19:00:01-05:00", "utc": "2011-03-19T00:00:01Z", "ms": 1300492800943.3716 } }, "covered_min": 113, "window_min": 144, "qualifies": true }, { "local_date": "2011-03-19", "window": { "start": { "local": "2011-03-19T16:36:11-05:00", "utc": "2011-03-19T21:36:11Z", "ms": 1300570571037.916 }, "end": { "local": "2011-03-19T19:01:08-05:00", "utc": "2011-03-20T00:01:08Z", "ms": 1300579268308.045 } }, "covered_min": 0, "window_min": 145, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:07 on Fri 18 Mar to 13:10 on Sat 19 Mar.", "fact": "2011-03-18T22:06:54Z → 2011-03-19T18:10:03Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:36–19:00 on the 18th, 16:36–19:01 on the 19th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 113 of 144 minutes on the 18th and 0 of 145 on the 19th.", "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 1877 s" }, { "step": "ruling", "text": "Holikā Dahana, Chicago, 2011: Friday 18 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": "2011-03-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-03-18", "confidence": "determinate" } ], "quote": "In Chicago, Holikā Dahana 2011 falls on Friday 18 March. Pūrṇimā runs from 17:07 on Fri 18 Mar to 13:10 on Sat 19 Mar and covers 113 of 144 minutes of sāyāhna that late afternoon.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-03-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1877, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-03-18T17:06:54-05:00", "utc": "2011-03-18T22:06:54Z", "ms": 1300486014241.1172 }, "end": { "local": "2011-03-19T13:10:03-05:00", "utc": "2011-03-19T18:10:03Z", "ms": 1300558203493.3623 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2011-03-18T17:06:54-05:00", "utc": "2011-03-18T22:06:54Z", "ms": 1300486014241.1172 }, "end": { "local": "2011-03-19T13:10:03-05:00", "utc": "2011-03-19T18:10:03Z", "ms": 1300558203493.3623 } }, "kaala": "sayahna", "days": [ { "local_date": "2011-03-18", "window": { "start": { "local": "2011-03-18T16:35:38-05:00", "utc": "2011-03-18T21:35:38Z", "ms": 1300484137627.5464 }, "end": { "local": "2011-03-18T19:00:01-05:00", "utc": "2011-03-19T00:00:01Z", "ms": 1300492800943.3716 } }, "covered_min": 113, "window_min": 144, "qualifies": true }, { "local_date": "2011-03-19", "window": { "start": { "local": "2011-03-19T16:36:11-05:00", "utc": "2011-03-19T21:36:11Z", "ms": 1300570571037.916 }, "end": { "local": "2011-03-19T19:01:08-05:00", "utc": "2011-03-20T00:01:08Z", "ms": 1300579268308.045 } }, "covered_min": 0, "window_min": 145, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "2011-03-18", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:07 on Fri 18 Mar to 13:10 on Sat 19 Mar.", "fact": "2011-03-18T22:06:54Z → 2011-03-19T18:10:03Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:36–19:00 on the 18th, 16:36–19:01 on the 19th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 113 of 144 minutes on the 18th and 0 of 145 on the 19th.", "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 1877 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Friday 18 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Chicago, 2011: Saturday 19 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": "2011-03-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-03-19", "confidence": "determinate" } ], "quote": "In Chicago, Holī 2011 falls on Saturday 19 March. It is kept the day after Holikā Dahana, which falls on Friday 18 March. Pūrṇimā runs from 17:07 on Fri 18 Mar to 13:10 on Sat 19 Mar and covers 113 of 144 minutes of sāyāhna on the 18th.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-03-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8285, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2011-03-19T13:10:03-05:00", "utc": "2011-03-19T18:10:03Z", "ms": 1300558203493.3623 }, "end": { "local": "2011-03-20T09:12:44-05:00", "utc": "2011-03-20T14:12:44Z", "ms": 1300630364331.7217 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-03-19T13:10:03-05:00", "utc": "2011-03-19T18:10:03Z", "ms": 1300558203493.3623 }, "end": { "local": "2011-03-20T09:12:44-05:00", "utc": "2011-03-20T14:12:44Z", "ms": 1300630364331.7217 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-03-19", "window": { "start": { "local": "2011-03-19T06:56:22-05:00", "utc": "2011-03-19T11:56:22Z", "ms": 1300535781957.4001 }, "end": { "local": "2011-03-19T06:56:22-05:00", "utc": "2011-03-19T11:56:22Z", "ms": 1300535781957.4001 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-03-20", "window": { "start": { "local": "2011-03-20T06:54:39-05:00", "utc": "2011-03-20T11:54:39Z", "ms": 1300622079405.2632 }, "end": { "local": "2011-03-20T06:54:39-05:00", "utc": "2011-03-20T11:54:39Z", "ms": 1300622079405.2632 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 13:10 on Sat 19 Mar to 09:13 on Sun 20 Mar.", "fact": "2011-03-19T18:10:03Z → 2011-03-20T14:12:44Z" }, { "step": "kaala", "text": "Sunrise is at 06:56 on the 19th and 06:55 on the 20th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā 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: purvaviddha → only-day · margin 8285 s" }, { "step": "ruling", "text": "Vasantotsava, Chicago, 2011: Sunday 20 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": "2011-03-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-03-20", "confidence": "determinate" } ], "quote": "In Chicago, Vasantotsava 2011 falls on Sunday 20 March. Pratipadā runs from 13:10 on Sat 19 Mar to 09:13 on Sun 20 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/sankashta-chaturthi?on=2011-03-21", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-03-21", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 417, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-03-22T02:03:13-05:00", "utc": "2011-03-22T07:03:13Z", "ms": 1300777392606.014 }, "end": { "local": "2011-03-22T23:12:23-05:00", "utc": "2011-03-23T04:12:23Z", "ms": 1300853542838.8054 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-03-22T02:03:13-05:00", "utc": "2011-03-22T07:03:13Z", "ms": 1300777392606.014 }, "end": { "local": "2011-03-22T23:12:23-05:00", "utc": "2011-03-23T04:12:23Z", "ms": 1300853542838.8054 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-03-21", "window": { "start": { "local": "2011-03-21T22:04:12-05:00", "utc": "2011-03-22T03:04:12Z", "ms": 1300763051546.3687 }, "end": { "local": "2011-03-21T22:04:12-05:00", "utc": "2011-03-22T03:04:12Z", "ms": 1300763051546.3687 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-03-22", "window": { "start": { "local": "2011-03-22T23:19:20-05:00", "utc": "2011-03-23T04:19:20Z", "ms": 1300853959882.7898 }, "end": { "local": "2011-03-22T23:19:20-05:00", "utc": "2011-03-23T04:19:20Z", "ms": 1300853959882.7898 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:03 on Tue 22 Mar to 23:12 on Tue 22 Mar.", "fact": "2011-03-22T07:03:13Z → 2011-03-23T04:12:23Z" }, { "step": "kaala", "text": "Moonrise is at 22:04 on the 21st and 23:19 on the 22nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 21st and is not on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 417 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2011: Monday 21 March.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-03-21", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-03-21", "confidence": "boundary" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2011 falls on Monday 21 March. Caturthī runs from 02:03 on Tue 22 Mar to 23:12 on Tue 22 Mar, and is current at moonrise on neither day.", "cite": "https://ahargana.org/chicago/festivals/2011/sankashta-chaturthi?on=2011-03-21", "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/2011/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-03-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20696, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2011-03-25T19:05:54-05:00", "utc": "2011-03-26T00:05:54Z", "ms": 1301097954060.597 }, "end": { "local": "2011-03-26T19:20:22-05:00", "utc": "2011-03-27T00:20:22Z", "ms": 1301185222221.3264 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-03-25T19:05:54-05:00", "utc": "2011-03-26T00:05:54Z", "ms": 1301097954060.597 }, "end": { "local": "2011-03-26T19:20:22-05:00", "utc": "2011-03-27T00:20:22Z", "ms": 1301185222221.3264 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-03-25", "window": { "start": { "local": "2011-03-25T12:32:58-05:00", "utc": "2011-03-25T17:32:58Z", "ms": 1301074377709.3486 }, "end": { "local": "2011-03-25T13:20:58-05:00", "utc": "2011-03-25T18:20:58Z", "ms": 1301077257709.3486 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-03-26", "window": { "start": { "local": "2011-03-26T12:32:40-05:00", "utc": "2011-03-26T17:32:40Z", "ms": 1301160759639.8606 }, "end": { "local": "2011-03-26T13:20:40-05:00", "utc": "2011-03-26T18:20:40Z", "ms": 1301163639639.8606 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 19:06 on Fri 25 Mar to 19:20 on Sat 26 Mar.", "fact": "2011-03-26T00:05:54Z → 2011-03-27T00:20:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:33–13:21 on the 25th, 12:33–13:21 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 20696 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Chicago, 2011: Saturday 26 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": "2011-03-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-03-26", "confidence": "determinate" } ], "quote": "In Chicago, Śītalāṣṭamī 2011 falls on Saturday 26 March. Aṣṭamī runs from 19:06 on Fri 25 Mar to 19:20 on Sat 26 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-03-29", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-03-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24347, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-03-28T21:51:42-05:00", "utc": "2011-03-29T02:51:42Z", "ms": 1301367102322.4727 }, "end": { "local": "2011-03-29T23:51:46-05:00", "utc": "2011-03-30T04:51:46Z", "ms": 1301460706196.9604 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-03-28T21:51:42-05:00", "utc": "2011-03-29T02:51:42Z", "ms": 1301367102322.4727 }, "end": { "local": "2011-03-29T23:51:46-05:00", "utc": "2011-03-30T04:51:46Z", "ms": 1301460706196.9604 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-03-29", "window": { "start": { "local": "2011-03-29T06:39:15-05:00", "utc": "2011-03-29T11:39:15Z", "ms": 1301398755342.7258 }, "end": { "local": "2011-03-29T06:39:15-05:00", "utc": "2011-03-29T11:39:15Z", "ms": 1301398755342.7258 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-03-30", "window": { "start": { "local": "2011-03-30T06:37:33-05:00", "utc": "2011-03-30T11:37:33Z", "ms": 1301485053131.4646 }, "end": { "local": "2011-03-30T06:37:33-05:00", "utc": "2011-03-30T11:37:33Z", "ms": 1301485053131.4646 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:52 on Mon 28 Mar to 23:52 on Tue 29 Mar.", "fact": "2011-03-29T02:51:42Z → 2011-03-30T04:51:46Z" }, { "step": "kaala", "text": "Sunrise is at 06:39 on the 29th and 06:38 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 24347 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Chicago, 2011: Tuesday 29 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": "2011-03-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-03-29", "confidence": "determinate" } ], "quote": "In Chicago, Pāpamocanī Ekādaśī 2011 falls on Tuesday 29 March. Ekādaśī runs from 21:52 on Mon 28 Mar to 23:52 on Tue 29 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-03-29", "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/2011/pradosha-vrata?on=2011-03-31", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19487, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-03-31T02:09:09-05:00", "utc": "2011-03-31T07:09:09Z", "ms": 1301555349146.1113 }, "end": { "local": "2011-04-01T04:35:45-05:00", "utc": "2011-04-01T09:35:45Z", "ms": 1301650544512.8828 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-03-31T02:09:09-05:00", "utc": "2011-03-31T07:09:09Z", "ms": 1301555349146.1113 }, "end": { "local": "2011-04-01T04:35:45-05:00", "utc": "2011-04-01T09:35:45Z", "ms": 1301650544512.8828 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-03-30", "window": { "start": { "local": "2011-03-30T19:13:22-05:00", "utc": "2011-03-31T00:13:22Z", "ms": 1301530402137.1936 }, "end": { "local": "2011-03-30T20:44:22-05:00", "utc": "2011-03-31T01:44:22Z", "ms": 1301535862002.0544 } }, "covered_min": 0, "window_min": 91, "qualifies": false }, { "local_date": "2011-03-31", "window": { "start": { "local": "2011-03-31T19:14:28-05:00", "utc": "2011-04-01T00:14:28Z", "ms": 1301616868459.5818 }, "end": { "local": "2011-03-31T20:45:06-05:00", "utc": "2011-04-01T01:45:06Z", "ms": 1301622305911.411 } }, "covered_min": 91, "window_min": 91, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:09 on Thu 31 Mar to 04:36 on Fri 1 Apr.", "fact": "2011-03-31T07:09:09Z → 2011-04-01T09:35:45Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:13–20:44 on the 30th, 19:14–20:45 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 91 minutes on the 30th and 91 of 91 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 19487 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2011: Thursday 31 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-03-31", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2011 falls on Thursday 31 March. Trayodaśī runs from 02:09 on Thu 31 Mar to 04:36 on Fri 1 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-03-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/shivaratri?on=2011-04-01", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11846, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-04-01T04:35:45-05:00", "utc": "2011-04-01T09:35:45Z", "ms": 1301650544512.8828 }, "end": { "local": "2011-04-02T07:05:06-05:00", "utc": "2011-04-02T12:05:06Z", "ms": 1301745905775.9846 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-04-01T04:35:45-05:00", "utc": "2011-04-01T09:35:45Z", "ms": 1301650544512.8828 }, "end": { "local": "2011-04-02T07:05:06-05:00", "utc": "2011-04-02T12:05:06Z", "ms": 1301745905775.9846 } }, "kaala": "nishita", "days": [ { "local_date": "2011-03-31", "window": { "start": { "local": "2011-04-01T00:30:19-05:00", "utc": "2011-04-01T05:30:19Z", "ms": 1301635818903.9412 }, "end": { "local": "2011-04-01T01:18:19-05:00", "utc": "2011-04-01T06:18:19Z", "ms": 1301638698903.9412 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-04-01", "window": { "start": { "local": "2011-04-02T00:30:01-05:00", "utc": "2011-04-02T05:30:01Z", "ms": 1301722201289.7725 }, "end": { "local": "2011-04-02T01:18:01-05:00", "utc": "2011-04-02T06:18:01Z", "ms": 1301725081289.7725 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:36 on Fri 1 Apr to 07:05 on Sat 2 Apr.", "fact": "2011-04-01T09:35:45Z → 2011-04-02T12:05:06Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:30–01:18 on the 31st, 00:30–01:18 on the 1st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11846 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2011: Friday 1 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": "2011-04-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-01", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2011 falls on Friday 1 April. Caturdaśī runs from 04:36 on Fri 1 Apr to 07:05 on Sat 2 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/shivaratri?on=2011-04-01", "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/2011/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2192, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2011-04-03T09:32:19-05:00", "utc": "2011-04-03T14:32:19Z", "ms": 1301841139375.688 }, "end": { "local": "2011-04-04T11:53:27-05:00", "utc": "2011-04-04T16:53:27Z", "ms": 1301936007295.609 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-04-03T09:32:19-05:00", "utc": "2011-04-03T14:32:19Z", "ms": 1301841139375.688 }, "end": { "local": "2011-04-04T11:53:27-05:00", "utc": "2011-04-04T16:53:27Z", "ms": 1301936007295.609 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-04-03", "window": { "start": { "local": "2011-04-03T12:30:17-05:00", "utc": "2011-04-03T17:30:17Z", "ms": 1301851816916.4492 }, "end": { "local": "2011-04-03T13:18:17-05:00", "utc": "2011-04-03T18:18:17Z", "ms": 1301854696916.4492 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-04-04", "window": { "start": { "local": "2011-04-04T12:30:00-05:00", "utc": "2011-04-04T17:30:00Z", "ms": 1301938199562.5737 }, "end": { "local": "2011-04-04T13:18:00-05:00", "utc": "2011-04-04T18:18:00Z", "ms": 1301941079562.5737 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 09:32 on Sun 3 Apr to 11:53 on Mon 4 Apr.", "fact": "2011-04-03T14:32:19Z → 2011-04-04T16:53:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 3rd, 12:30–13:18 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2192 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Chicago, 2011: Sunday 3 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha-caitra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-04-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-04", "confidence": "determinate" } ], "quote": "In Chicago, Navarātrārambha (Caitra) (Chaitra Navratri) 2011 falls on Sunday 3 April. Pratipadā runs from 09:32 on Sun 3 Apr to 11:53 on Mon 4 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2814, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2011-04-05T14:04:37-05:00", "utc": "2011-04-05T19:04:37Z", "ms": 1302030276699.5276 }, "end": { "local": "2011-04-06T16:01:15-05:00", "utc": "2011-04-06T21:01:15Z", "ms": 1302123675222.1902 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-04-05T14:04:37-05:00", "utc": "2011-04-05T19:04:37Z", "ms": 1302030276699.5276 }, "end": { "local": "2011-04-06T16:01:15-05:00", "utc": "2011-04-06T21:01:15Z", "ms": 1302123675222.1902 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-04-05", "window": { "start": { "local": "2011-04-05T12:29:42-05:00", "utc": "2011-04-05T17:29:42Z", "ms": 1302024582370.2058 }, "end": { "local": "2011-04-05T13:17:42-05:00", "utc": "2011-04-05T18:17:42Z", "ms": 1302027462370.2058 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-04-06", "window": { "start": { "local": "2011-04-06T12:29:25-05:00", "utc": "2011-04-06T17:29:25Z", "ms": 1302110965354.4849 }, "end": { "local": "2011-04-06T13:17:25-05:00", "utc": "2011-04-06T18:17:25Z", "ms": 1302113845354.4849 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 14:05 on Tue 5 Apr to 16:01 on Wed 6 Apr.", "fact": "2011-04-05T19:04:37Z → 2011-04-06T21:01:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 5th, 12:29–13:17 on the 6th.", "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 5th and 48 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: unstated → only-day · margin 2814 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Chicago, 2011: Wednesday 6 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gauri-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-04-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-06", "confidence": "boundary" } ], "quote": "In Chicago, Gaurī Tṛtīyā (Gangaur) 2011 falls on Wednesday 6 April. Tṛtīyā runs from 14:05 on Tue 5 Apr to 16:01 on Wed 6 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2814, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2011-04-05T14:04:37-05:00", "utc": "2011-04-05T19:04:37Z", "ms": 1302030276699.5276 }, "end": { "local": "2011-04-06T16:01:15-05:00", "utc": "2011-04-06T21:01:15Z", "ms": 1302123675222.1902 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-04-05T14:04:37-05:00", "utc": "2011-04-05T19:04:37Z", "ms": 1302030276699.5276 }, "end": { "local": "2011-04-06T16:01:15-05:00", "utc": "2011-04-06T21:01:15Z", "ms": 1302123675222.1902 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-04-05", "window": { "start": { "local": "2011-04-05T12:29:42-05:00", "utc": "2011-04-05T17:29:42Z", "ms": 1302024582370.2058 }, "end": { "local": "2011-04-05T13:17:42-05:00", "utc": "2011-04-05T18:17:42Z", "ms": 1302027462370.2058 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-04-06", "window": { "start": { "local": "2011-04-06T12:29:25-05:00", "utc": "2011-04-06T17:29:25Z", "ms": 1302110965354.4849 }, "end": { "local": "2011-04-06T13:17:25-05:00", "utc": "2011-04-06T18:17:25Z", "ms": 1302113845354.4849 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 14:05 on Tue 5 Apr to 16:01 on Wed 6 Apr.", "fact": "2011-04-05T19:04:37Z → 2011-04-06T21:01:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 5th, 12:29–13:17 on the 6th.", "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 5th and 48 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 2814 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Chicago, 2011: Wednesday 6 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "saubhagya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-04-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-06", "confidence": "determinate" } ], "quote": "In Chicago, Saubhāgya Śayana Vrata 2011 falls on Wednesday 6 April. Tṛtīyā runs from 14:05 on Tue 5 Apr to 16:01 on Wed 6 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/vinayaka-chaturthi?on=2011-04-07", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9830, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-04-06T16:01:15-05:00", "utc": "2011-04-06T21:01:15Z", "ms": 1302123675222.1902 }, "end": { "local": "2011-04-07T17:37:48-05:00", "utc": "2011-04-07T22:37:48Z", "ms": 1302215868085.6182 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-04-06T16:01:15-05:00", "utc": "2011-04-06T21:01:15Z", "ms": 1302123675222.1902 }, "end": { "local": "2011-04-07T17:37:48-05:00", "utc": "2011-04-07T22:37:48Z", "ms": 1302215868085.6182 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-04-06", "window": { "start": { "local": "2011-04-06T12:29:25-05:00", "utc": "2011-04-06T17:29:25Z", "ms": 1302110965354.4849 }, "end": { "local": "2011-04-06T13:17:25-05:00", "utc": "2011-04-06T18:17:25Z", "ms": 1302113845354.4849 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-04-07", "window": { "start": { "local": "2011-04-07T12:29:09-05:00", "utc": "2011-04-07T17:29:09Z", "ms": 1302197348530.3584 }, "end": { "local": "2011-04-07T13:17:09-05:00", "utc": "2011-04-07T18:17:09Z", "ms": 1302200228530.3584 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:01 on Wed 6 Apr to 17:38 on Thu 7 Apr.", "fact": "2011-04-06T21:01:15Z → 2011-04-07T22:37:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 6th, 12:29–13:17 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 6th and 48 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9830 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2011: Thursday 7 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": "2011-04-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-07", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2011 falls on Thursday 7 April. Caturthī runs from 16:01 on Wed 6 Apr to 17:38 on Thu 7 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/vinayaka-chaturthi?on=2011-04-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15640, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2011-04-07T17:37:48-05:00", "utc": "2011-04-07T22:37:48Z", "ms": 1302215868085.6182 }, "end": { "local": "2011-04-08T18:47:47-05:00", "utc": "2011-04-08T23:47:47Z", "ms": 1302306467405.233 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-04-07T17:37:48-05:00", "utc": "2011-04-07T22:37:48Z", "ms": 1302215868085.6182 }, "end": { "local": "2011-04-08T18:47:47-05:00", "utc": "2011-04-08T23:47:47Z", "ms": 1302306467405.233 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-04-07", "window": { "start": { "local": "2011-04-07T12:29:09-05:00", "utc": "2011-04-07T17:29:09Z", "ms": 1302197348530.3584 }, "end": { "local": "2011-04-07T13:17:09-05:00", "utc": "2011-04-07T18:17:09Z", "ms": 1302200228530.3584 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-04-08", "window": { "start": { "local": "2011-04-08T12:28:52-05:00", "utc": "2011-04-08T17:28:52Z", "ms": 1302283731912.664 }, "end": { "local": "2011-04-08T13:16:52-05:00", "utc": "2011-04-08T18:16:52Z", "ms": 1302286611912.664 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 17:38 on Thu 7 Apr to 18:48 on Fri 8 Apr.", "fact": "2011-04-07T22:37:48Z → 2011-04-08T23:47:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 7th, 12:29–13:17 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 15640 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Chicago, 2011: Friday 8 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "lakshmi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri pancami or Laksmi pancami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-04-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-08", "confidence": "determinate" } ], "quote": "In Chicago, Lakṣmī Pañcamī 2011 falls on Friday 8 April. Pañcamī runs from 17:38 on Thu 7 Apr to 18:48 on Fri 8 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19283, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2011-04-10T19:22:23-05:00", "utc": "2011-04-11T00:22:23Z", "ms": 1302481343064.2034 }, "end": { "local": "2011-04-11T18:37:26-05:00", "utc": "2011-04-11T23:37:26Z", "ms": 1302565046199.5896 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-04-10T19:22:23-05:00", "utc": "2011-04-11T00:22:23Z", "ms": 1302481343064.2034 }, "end": { "local": "2011-04-11T18:37:26-05:00", "utc": "2011-04-11T23:37:26Z", "ms": 1302565046199.5896 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-04-10", "window": { "start": { "local": "2011-04-10T12:28:19-05:00", "utc": "2011-04-10T17:28:19Z", "ms": 1302456499355.9575 }, "end": { "local": "2011-04-10T13:16:19-05:00", "utc": "2011-04-10T18:16:19Z", "ms": 1302459379355.9575 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-04-11", "window": { "start": { "local": "2011-04-11T12:28:03-05:00", "utc": "2011-04-11T17:28:03Z", "ms": 1302542883447.0317 }, "end": { "local": "2011-04-11T13:16:03-05:00", "utc": "2011-04-11T18:16:03Z", "ms": 1302545763447.0317 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 19:22 on Sun 10 Apr to 18:37 on Mon 11 Apr.", "fact": "2011-04-11T00:22:23Z → 2011-04-11T23:37:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 10th, 12:28–13:16 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19283 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Chicago, 2011: Monday 11 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhavani-utpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Annapurna puja (Beng.) (paraviddha), Bhavani-utpatti (paraviddha), Asokastami (Special when combined with naks. Punarvasu and Wednesday, after mid-day)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-04-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-11", "confidence": "determinate" } ], "quote": "In Chicago, Bhavānī Utpatti 2011 falls on Monday 11 April. Aṣṭamī runs from 19:22 on Sun 10 Apr to 18:37 on Mon 11 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13975, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2011-04-11T18:37:26-05:00", "utc": "2011-04-11T23:37:26Z", "ms": 1302565046199.5896 }, "end": { "local": "2011-04-12T17:08:42-05:00", "utc": "2011-04-12T22:08:42Z", "ms": 1302646122427.4312 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-04-11T18:37:26-05:00", "utc": "2011-04-11T23:37:26Z", "ms": 1302565046199.5896 }, "end": { "local": "2011-04-12T17:08:42-05:00", "utc": "2011-04-12T22:08:42Z", "ms": 1302646122427.4312 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-04-11", "window": { "start": { "local": "2011-04-11T12:28:03-05:00", "utc": "2011-04-11T17:28:03Z", "ms": 1302542883447.0317 }, "end": { "local": "2011-04-11T13:16:03-05:00", "utc": "2011-04-11T18:16:03Z", "ms": 1302545763447.0317 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-04-12", "window": { "start": { "local": "2011-04-12T12:27:48-05:00", "utc": "2011-04-12T17:27:48Z", "ms": 1302629267805.0432 }, "end": { "local": "2011-04-12T13:15:48-05:00", "utc": "2011-04-12T18:15:48Z", "ms": 1302632147805.0432 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 18:37 on Mon 11 Apr to 17:09 on Tue 12 Apr.", "fact": "2011-04-11T23:37:26Z → 2011-04-12T22:08:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 11th, 12:28–13:16 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13975 s" }, { "step": "ruling", "text": "Rāma Navamī, Chicago, 2011: Tuesday 12 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": "2011-04-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-12", "confidence": "determinate" } ], "quote": "In Chicago, Rāma Navamī 2011 falls on Tuesday 12 April. Navamī runs from 18:37 on Mon 11 Apr to 17:09 on Tue 12 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13350, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "2011-04-14T02:30:10-05:00", "utc": "2011-04-14T07:30:10Z", "ms": 1302766209974.1213 }, "end": { "local": "2011-05-14T23:20:09-05:00", "utc": "2011-05-15T04:20:09Z", "ms": 1305433208686.5007 } }, "span": { "of": "transit", "start": { "local": "2011-04-14T02:30:10-05:00", "utc": "2011-04-14T07:30:10Z", "ms": 1302766209974.1213 }, "end": { "local": "2011-04-14T02:30:10-05:00", "utc": "2011-04-14T07:30:10Z", "ms": 1302766209974.1213 } }, "kaala": "day", "days": [ { "local_date": "2011-04-13", "window": { "start": { "local": "2011-04-13T06:14:17-05:00", "utc": "2011-04-13T11:14:17Z", "ms": 1302693256587.7227 }, "end": { "local": "2011-04-14T06:12:40-05:00", "utc": "2011-04-14T11:12:40Z", "ms": 1302779560454.5764 } }, "covered_min": 1, "window_min": 1438, "qualifies": true }, { "local_date": "2011-04-14", "window": { "start": { "local": "2011-04-14T06:12:40-05:00", "utc": "2011-04-14T11:12:40Z", "ms": 1302779560454.5764 }, "end": { "local": "2011-04-15T06:11:05-05:00", "utc": "2011-04-15T11:11:05Z", "ms": 1302865864967.217 } }, "covered_min": 0, "window_min": 1438, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 02:30 on Thu 14 Apr.", "fact": "2011-04-14T07:30:10Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:14 on the 13th, and from 06:13 on the 14th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 13th, not the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunrise → only-day · margin 13350 s" }, { "step": "ruling", "text": "Vaiśākhī, Chicago, 2011: Wednesday 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": "2011-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2011-04-14", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "2011-04-14", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Chicago, Vaiśākhī 2011 falls on Wednesday 13 April. The Sun enters Meṣa at 02:30 on Thu 14 Apr, and the rule counts the day from sunrise. Counted from midnight, or by the Tamil rule for the first day of a solar month, which gives a transit after sunset to the next day, it is 14 April.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-04-14", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21498, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-04-13T14:58:14-05:00", "utc": "2011-04-13T19:58:14Z", "ms": 1302724694390.9644 }, "end": { "local": "2011-04-14T12:10:58-05:00", "utc": "2011-04-14T17:10:58Z", "ms": 1302801058342.8435 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-04-13T14:58:14-05:00", "utc": "2011-04-13T19:58:14Z", "ms": 1302724694390.9644 }, "end": { "local": "2011-04-14T12:10:58-05:00", "utc": "2011-04-14T17:10:58Z", "ms": 1302801058342.8435 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-04-13", "window": { "start": { "local": "2011-04-13T06:14:17-05:00", "utc": "2011-04-13T11:14:17Z", "ms": 1302693256587.7227 }, "end": { "local": "2011-04-13T06:14:17-05:00", "utc": "2011-04-13T11:14:17Z", "ms": 1302693256587.7227 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-04-14", "window": { "start": { "local": "2011-04-14T06:12:40-05:00", "utc": "2011-04-14T11:12:40Z", "ms": 1302779560454.5764 }, "end": { "local": "2011-04-14T06:12:40-05:00", "utc": "2011-04-14T11:12:40Z", "ms": 1302779560454.5764 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:58 on Wed 13 Apr to 12:11 on Thu 14 Apr.", "fact": "2011-04-13T19:58:14Z → 2011-04-14T17:10:58Z" }, { "step": "kaala", "text": "Sunrise is at 06:14 on the 13th and 06:13 on the 14th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 13th and is on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21498 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Chicago, 2011: Thursday 14 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": "2011-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-14", "confidence": "determinate" } ], "quote": "In Chicago, Kāmadā Ekādaśī 2011 falls on Thursday 14 April. Ekādaśī runs from 14:58 on Wed 13 Apr to 12:11 on Thu 14 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-04-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12768, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-04-15T08:54:15-05:00", "utc": "2011-04-15T13:54:15Z", "ms": 1302875654829.5947 }, "end": { "local": "2011-04-16T05:17:12-05:00", "utc": "2011-04-16T10:17:12Z", "ms": 1302949031703.7878 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-04-15T08:54:15-05:00", "utc": "2011-04-15T13:54:15Z", "ms": 1302875654829.5947 }, "end": { "local": "2011-04-16T05:17:12-05:00", "utc": "2011-04-16T10:17:12Z", "ms": 1302949031703.7878 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-04-15", "window": { "start": { "local": "2011-04-15T12:27:03-05:00", "utc": "2011-04-15T17:27:03Z", "ms": 1302888422647.627 }, "end": { "local": "2011-04-15T13:15:03-05:00", "utc": "2011-04-15T18:15:03Z", "ms": 1302891302647.627 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-04-16", "window": { "start": { "local": "2011-04-16T12:26:48-05:00", "utc": "2011-04-16T17:26:48Z", "ms": 1302974808244.821 }, "end": { "local": "2011-04-16T13:14:48-05:00", "utc": "2011-04-16T18:14:48Z", "ms": 1302977688244.821 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:54 on Fri 15 Apr to 05:17 on Sat 16 Apr.", "fact": "2011-04-15T13:54:15Z → 2011-04-16T10:17:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 15th, 12:27–13:15 on the 16th.", "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 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 12768 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Chicago, 2011: Friday 15 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": "2011-04-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-15", "confidence": "determinate" } ], "quote": "In Chicago, Anaṅga Trayodaśī 2011 falls on Friday 15 April. Trayodaśī runs from 08:54 on Fri 15 Apr to 05:17 on Sat 16 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/pradosha-vrata?on=2011-04-15", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30063, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-04-15T08:54:15-05:00", "utc": "2011-04-15T13:54:15Z", "ms": 1302875654829.5947 }, "end": { "local": "2011-04-16T05:17:12-05:00", "utc": "2011-04-16T10:17:12Z", "ms": 1302949031703.7878 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-04-15T08:54:15-05:00", "utc": "2011-04-15T13:54:15Z", "ms": 1302875654829.5947 }, "end": { "local": "2011-04-16T05:17:12-05:00", "utc": "2011-04-16T10:17:12Z", "ms": 1302949031703.7878 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-04-14", "window": { "start": { "local": "2011-04-14T19:29:54-05:00", "utc": "2011-04-15T00:29:54Z", "ms": 1302827394320.9194 }, "end": { "local": "2011-04-14T20:55:24-05:00", "utc": "2011-04-15T01:55:24Z", "ms": 1302832523740.4258 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "2011-04-15", "window": { "start": { "local": "2011-04-15T19:31:00-05:00", "utc": "2011-04-16T00:31:00Z", "ms": 1302913860328.037 }, "end": { "local": "2011-04-15T20:56:08-05:00", "utc": "2011-04-16T01:56:08Z", "ms": 1302918968305.4712 } }, "covered_min": 85, "window_min": 85, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:54 on Fri 15 Apr to 05:17 on Sat 16 Apr.", "fact": "2011-04-15T13:54:15Z → 2011-04-16T10:17:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:30–20:55 on the 14th, 19:31–20:56 on the 15th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 85 minutes on the 14th and 85 of 85 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 30063 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2011: Friday 15 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": "2011-04-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-15", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2011 falls on Friday 15 April. Trayodaśī runs from 08:54 on Fri 15 Apr to 05:17 on Sat 16 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-04-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25777, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-04-16T05:17:12-05:00", "utc": "2011-04-16T10:17:12Z", "ms": 1302949031703.7878 }, "end": { "local": "2011-04-17T01:30:08-05:00", "utc": "2011-04-17T06:30:08Z", "ms": 1303021807615.5854 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-04-16T05:17:12-05:00", "utc": "2011-04-16T10:17:12Z", "ms": 1302949031703.7878 }, "end": { "local": "2011-04-17T01:30:08-05:00", "utc": "2011-04-17T06:30:08Z", "ms": 1303021807615.5854 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-04-16", "window": { "start": { "local": "2011-04-16T12:26:48-05:00", "utc": "2011-04-16T17:26:48Z", "ms": 1302974808244.821 }, "end": { "local": "2011-04-16T13:14:48-05:00", "utc": "2011-04-16T18:14:48Z", "ms": 1302977688244.821 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-04-17", "window": { "start": { "local": "2011-04-17T12:26:34-05:00", "utc": "2011-04-17T17:26:34Z", "ms": 1303061194198.8162 }, "end": { "local": "2011-04-17T13:14:34-05:00", "utc": "2011-04-17T18:14:34Z", "ms": 1303064074198.8162 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:17 on Sat 16 Apr to 01:30 on Sun 17 Apr.", "fact": "2011-04-16T10:17:12Z → 2011-04-17T06:30:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 16th, 12:27–13:15 on the 17th.", "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 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25777 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Chicago, 2011: Saturday 16 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": "2011-04-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-16", "confidence": "determinate" } ], "quote": "In Chicago, Viṣṇudamanaka Caturdaśī 2011 falls on Saturday 16 April. Caturdaśī runs from 05:17 on Sat 16 Apr to 01:30 on Sun 17 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30565, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-04-17T01:30:08-05:00", "utc": "2011-04-17T06:30:08Z", "ms": 1303021807615.5854 }, "end": { "local": "2011-04-17T21:43:59-05:00", "utc": "2011-04-18T02:43:59Z", "ms": 1303094639359.1416 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2011-04-17T01:30:08-05:00", "utc": "2011-04-17T06:30:08Z", "ms": 1303021807615.5854 }, "end": { "local": "2011-04-17T21:43:59-05:00", "utc": "2011-04-18T02:43:59Z", "ms": 1303094639359.1416 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-04-16", "window": { "start": { "local": "2011-04-16T12:26:48-05:00", "utc": "2011-04-16T17:26:48Z", "ms": 1302974808244.821 }, "end": { "local": "2011-04-16T13:14:48-05:00", "utc": "2011-04-16T18:14:48Z", "ms": 1302977688244.821 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-04-17", "window": { "start": { "local": "2011-04-17T12:26:34-05:00", "utc": "2011-04-17T17:26:34Z", "ms": 1303061194198.8162 }, "end": { "local": "2011-04-17T13:14:34-05:00", "utc": "2011-04-17T18:14:34Z", "ms": 1303064074198.8162 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:30 on Sun 17 Apr to 21:44 on Sun 17 Apr.", "fact": "2011-04-17T06:30:08Z → 2011-04-18T02:43:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 16th, 12:27–13:15 on the 17th.", "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 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 30565 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Chicago, 2011: Sunday 17 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": "2011-04-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-17", "confidence": "determinate" } ], "quote": "In Chicago, Caitrī Pūrṇimā 2011 falls on Sunday 17 April. Pūrṇimā runs from 01:30 on Sun 17 Apr to 21:44 on Sun 17 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/sankashta-chaturthi?on=2011-04-20", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39228, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-04-20T12:19:47-05:00", "utc": "2011-04-20T17:19:47Z", "ms": 1303319986563.0068 }, "end": { "local": "2011-04-21T10:21:54-05:00", "utc": "2011-04-21T15:21:54Z", "ms": 1303399314338.6655 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-04-20T12:19:47-05:00", "utc": "2011-04-20T17:19:47Z", "ms": 1303319986563.0068 }, "end": { "local": "2011-04-21T10:21:54-05:00", "utc": "2011-04-21T15:21:54Z", "ms": 1303399314338.6655 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-04-20", "window": { "start": { "local": "2011-04-20T23:13:34-05:00", "utc": "2011-04-21T04:13:34Z", "ms": 1303359214269.3435 }, "end": { "local": "2011-04-20T23:13:34-05:00", "utc": "2011-04-21T04:13:34Z", "ms": 1303359214269.3435 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-04-21", "window": { "start": { "local": "2011-04-22T00:11:17-05:00", "utc": "2011-04-22T05:11:17Z", "ms": 1303449077031.2666 }, "end": { "local": "2011-04-22T00:11:17-05:00", "utc": "2011-04-22T05:11:17Z", "ms": 1303449077031.2666 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:20 on Wed 20 Apr to 10:22 on Thu 21 Apr.", "fact": "2011-04-20T17:19:47Z → 2011-04-21T15:21:54Z" }, { "step": "kaala", "text": "Moonrise is at 23:14 on the 20th and 00:11 on the 21st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 20th and is not on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 39228 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2011: Wednesday 20 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": "2011-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-20", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2011 falls on Wednesday 20 April. Caturthī runs from 12:20 on Wed 20 Apr to 10:22 on Thu 21 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/sankashta-chaturthi?on=2011-04-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/ekadashi?on=2011-04-28", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30713, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-04-27T14:24:55-05:00", "utc": "2011-04-27T19:24:55Z", "ms": 1303932295403.008 }, "end": { "local": "2011-04-28T16:49:58-05:00", "utc": "2011-04-28T21:49:58Z", "ms": 1304027398045.589 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-04-27T14:24:55-05:00", "utc": "2011-04-27T19:24:55Z", "ms": 1303932295403.008 }, "end": { "local": "2011-04-28T16:49:58-05:00", "utc": "2011-04-28T21:49:58Z", "ms": 1304027398045.589 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-04-27", "window": { "start": { "local": "2011-04-27T05:53:02-05:00", "utc": "2011-04-27T10:53:02Z", "ms": 1303901582005.6995 }, "end": { "local": "2011-04-27T05:53:02-05:00", "utc": "2011-04-27T10:53:02Z", "ms": 1303901582005.6995 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-04-28", "window": { "start": { "local": "2011-04-28T05:51:38-05:00", "utc": "2011-04-28T10:51:38Z", "ms": 1303987898050.0667 }, "end": { "local": "2011-04-28T05:51:38-05:00", "utc": "2011-04-28T10:51:38Z", "ms": 1303987898050.0667 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:25 on Wed 27 Apr to 16:50 on Thu 28 Apr.", "fact": "2011-04-27T19:24:55Z → 2011-04-28T21:49:58Z" }, { "step": "kaala", "text": "Sunrise is at 05:53 on the 27th and 05:52 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 30713 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Chicago, 2011: Thursday 28 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-04-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-28", "confidence": "determinate" } ], "quote": "In Chicago, Varūthinī Ekādaśī 2011 falls on Thursday 28 April. Ekādaśī runs from 14:25 on Wed 27 Apr to 16:50 on Thu 28 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-04-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-04-29", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-29", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1676, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-04-29T19:18:28-05:00", "utc": "2011-04-30T00:18:28Z", "ms": 1304122708199.6836 }, "end": { "local": "2011-04-30T21:41:58-05:00", "utc": "2011-05-01T02:41:58Z", "ms": 1304217718031.1763 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-04-29T19:18:28-05:00", "utc": "2011-04-30T00:18:28Z", "ms": 1304122708199.6836 }, "end": { "local": "2011-04-30T21:41:58-05:00", "utc": "2011-05-01T02:41:58Z", "ms": 1304217718031.1763 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-04-29", "window": { "start": { "local": "2011-04-29T19:46:24-05:00", "utc": "2011-04-30T00:46:24Z", "ms": 1304124383971.509 }, "end": { "local": "2011-04-29T21:06:44-05:00", "utc": "2011-04-30T02:06:44Z", "ms": 1304129203913.8987 } }, "covered_min": 80, "window_min": 80, "qualifies": true }, { "local_date": "2011-04-30", "window": { "start": { "local": "2011-04-30T19:47:30-05:00", "utc": "2011-05-01T00:47:30Z", "ms": 1304210849620.7637 }, "end": { "local": "2011-04-30T21:07:30-05:00", "utc": "2011-05-01T02:07:30Z", "ms": 1304215650077.5789 } }, "covered_min": 80, "window_min": 80, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:18 on Fri 29 Apr to 21:42 on Sat 30 Apr.", "fact": "2011-04-30T00:18:28Z → 2011-05-01T02:41:58Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:46–21:07 on the 29th, 19:47–21:08 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 80 of 80 minutes on the 29th and 80 of 80 on the 30th.", "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 1676 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2011: Friday 29 April.", "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": "2011-04-29", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-29", "confidence": "boundary" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2011 falls on Friday 29 April. Trayodaśī runs from 19:18 on Fri 29 Apr to 21:42 on Sat 30 Apr and covers all of pradoṣa that evening. It also reaches the next evening for 80 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-04-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/shivaratri?on=2011-04-30", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-04-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1754, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-04-30T21:41:58-05:00", "utc": "2011-05-01T02:41:58Z", "ms": 1304217718031.1763 }, "end": { "local": "2011-05-01T23:54:10-05:00", "utc": "2011-05-02T04:54:10Z", "ms": 1304312050309.2002 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-04-30T21:41:58-05:00", "utc": "2011-05-01T02:41:58Z", "ms": 1304217718031.1763 }, "end": { "local": "2011-05-01T23:54:10-05:00", "utc": "2011-05-02T04:54:10Z", "ms": 1304312050309.2002 } }, "kaala": "nishita", "days": [ { "local_date": "2011-04-30", "window": { "start": { "local": "2011-05-01T00:23:31-05:00", "utc": "2011-05-01T05:23:31Z", "ms": 1304227411333.8208 }, "end": { "local": "2011-05-01T01:11:31-05:00", "utc": "2011-05-01T06:11:31Z", "ms": 1304230291333.8208 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-05-01", "window": { "start": { "local": "2011-05-02T00:23:24-05:00", "utc": "2011-05-02T05:23:24Z", "ms": 1304313804457.4526 }, "end": { "local": "2011-05-02T01:11:24-05:00", "utc": "2011-05-02T06:11:24Z", "ms": 1304316684457.4526 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:42 on Sat 30 Apr to 23:54 on Sun 1 May.", "fact": "2011-05-01T02:41:58Z → 2011-05-02T04:54:10Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:24–01:12 on the 30th, 00:23–01:11 on the 1st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 30th and 0 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1754 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2011: Saturday 30 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": "2011-04-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-04-30", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2011 falls on Saturday 30 April. Caturdaśī runs from 21:42 on Sat 30 Apr to 23:54 on Sun 1 May and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/shivaratri?on=2011-04-30", "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/2011/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-05", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 226, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2011-05-05T04:44:49-05:00", "utc": "2011-05-05T09:44:49Z", "ms": 1304588689034.3354 }, "end": { "local": "2011-05-06T05:37:23-05:00", "utc": "2011-05-06T10:37:23Z", "ms": 1304678243484.1655 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-05T04:44:49-05:00", "utc": "2011-05-05T09:44:49Z", "ms": 1304588689034.3354 }, "end": { "local": "2011-05-06T05:37:23-05:00", "utc": "2011-05-06T10:37:23Z", "ms": 1304678243484.1655 } }, "kaala": "purvahna", "days": [ { "local_date": "2011-05-05", "window": { "start": { "local": "2011-05-05T05:42:24-05:00", "utc": "2011-05-05T10:42:24Z", "ms": 1304592143537.8704 }, "end": { "local": "2011-05-05T10:25:54-05:00", "utc": "2011-05-05T15:25:54Z", "ms": 1304609154196.37 } }, "covered_min": 284, "window_min": 284, "qualifies": true }, { "local_date": "2011-05-06", "window": { "start": { "local": "2011-05-06T05:41:09-05:00", "utc": "2011-05-06T10:41:09Z", "ms": 1304678469424.614 }, "end": { "local": "2011-05-06T10:25:26-05:00", "utc": "2011-05-06T15:25:26Z", "ms": 1304695526297.5103 } }, "covered_min": 0, "window_min": 284, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 04:45 on Thu 5 May to 05:37 on Fri 6 May.", "fact": "2011-05-05T09:44:49Z → 2011-05-06T10:37:23Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:42–10:26 on the 5th, 05:41–10:25 on the 6th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pūrvāhṇa. It covers 284 of 284 minutes on the 5th and 0 of 284 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one forenoon qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 226 s < 300 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Chicago, 2011: Thursday 5 May.", "fact": "confidence: boundary (margin)" } ], "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": "2011-05-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-05", "confidence": "boundary" } ], "quote": "In Chicago, Akṣaya Tṛtīyā 2011 falls on Thursday 5 May. Tṛtīyā runs from 04:45 on Thu 5 May to 05:37 on Fri 6 May and covers all of pūrvāhṇa that forenoon. It is 3 min 46 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27254, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2011-05-05T04:44:49-05:00", "utc": "2011-05-05T09:44:49Z", "ms": 1304588689034.3354 }, "end": { "local": "2011-05-06T05:37:23-05:00", "utc": "2011-05-06T10:37:23Z", "ms": 1304678243484.1655 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-05T04:44:49-05:00", "utc": "2011-05-05T09:44:49Z", "ms": 1304588689034.3354 }, "end": { "local": "2011-05-06T05:37:23-05:00", "utc": "2011-05-06T10:37:23Z", "ms": 1304678243484.1655 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-05-04", "window": { "start": { "local": "2011-05-04T19:51:51-05:00", "utc": "2011-05-05T00:51:51Z", "ms": 1304556710730.958 }, "end": { "local": "2011-05-04T21:10:35-05:00", "utc": "2011-05-05T02:10:35Z", "ms": 1304561435105.213 } }, "covered_min": 0, "window_min": 79, "qualifies": false }, { "local_date": "2011-05-05", "window": { "start": { "local": "2011-05-05T19:52:56-05:00", "utc": "2011-05-06T00:52:56Z", "ms": 1304643175513.3699 }, "end": { "local": "2011-05-05T21:11:21-05:00", "utc": "2011-05-06T02:11:21Z", "ms": 1304647881368.2024 } }, "covered_min": 78, "window_min": 78, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 04:45 on Thu 5 May to 05:37 on Fri 6 May.", "fact": "2011-05-05T09:44:49Z → 2011-05-06T10:37:23Z" }, { "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": "Tṛtīyā must be present during pradoṣa. It covers 0 of 79 minutes on the 4th and 78 of 78 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: paraviddha → only-day · margin 27254 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Chicago, 2011: Thursday 5 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-05-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-05", "confidence": "determinate" } ], "quote": "In Chicago, Paraśurāma Jayantī 2011 falls on Thursday 5 May. Tṛtīyā runs from 04:45 on Thu 5 May to 05:37 on Fri 6 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/vinayaka-chaturthi?on=2011-05-06", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22801, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-05-06T05:37:23-05:00", "utc": "2011-05-06T10:37:23Z", "ms": 1304678243484.1655 }, "end": { "local": "2011-05-07T06:03:30-05:00", "utc": "2011-05-07T11:03:30Z", "ms": 1304766209829.289 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-06T05:37:23-05:00", "utc": "2011-05-06T10:37:23Z", "ms": 1304678243484.1655 }, "end": { "local": "2011-05-07T06:03:30-05:00", "utc": "2011-05-07T11:03:30Z", "ms": 1304766209829.289 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-05-06", "window": { "start": { "local": "2011-05-06T12:23:35-05:00", "utc": "2011-05-06T17:23:35Z", "ms": 1304702614733.9585 }, "end": { "local": "2011-05-06T13:11:35-05:00", "utc": "2011-05-06T18:11:35Z", "ms": 1304705494733.9585 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-05-07", "window": { "start": { "local": "2011-05-07T12:23:30-05:00", "utc": "2011-05-07T17:23:30Z", "ms": 1304789010483.61 }, "end": { "local": "2011-05-07T13:11:30-05:00", "utc": "2011-05-07T18:11:30Z", "ms": 1304791890483.61 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:37 on Fri 6 May to 06:03 on Sat 7 May.", "fact": "2011-05-06T10:37:23Z → 2011-05-07T11:03:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 6th, 12:24–13:12 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22801 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2011: Friday 6 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": "2011-05-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-06", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2011 falls on Friday 6 May. Caturthī runs from 05:37 on Fri 6 May to 06:03 on Sat 7 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/vinayaka-chaturthi?on=2011-05-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22801, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2011-05-07T06:03:30-05:00", "utc": "2011-05-07T11:03:30Z", "ms": 1304766209829.289 }, "end": { "local": "2011-05-08T06:00:28-05:00", "utc": "2011-05-08T11:00:28Z", "ms": 1304852427521.459 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-07T06:03:30-05:00", "utc": "2011-05-07T11:03:30Z", "ms": 1304766209829.289 }, "end": { "local": "2011-05-08T06:00:28-05:00", "utc": "2011-05-08T11:00:28Z", "ms": 1304852427521.459 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-05-07", "window": { "start": { "local": "2011-05-07T12:23:30-05:00", "utc": "2011-05-07T17:23:30Z", "ms": 1304789010483.61 }, "end": { "local": "2011-05-07T13:11:30-05:00", "utc": "2011-05-07T18:11:30Z", "ms": 1304791890483.61 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-05-08", "window": { "start": { "local": "2011-05-08T12:23:27-05:00", "utc": "2011-05-08T17:23:27Z", "ms": 1304875406774.1833 }, "end": { "local": "2011-05-08T13:11:27-05:00", "utc": "2011-05-08T18:11:27Z", "ms": 1304878286774.1833 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 06:03 on Sat 7 May to 06:00 on Sun 8 May.", "fact": "2011-05-07T11:03:30Z → 2011-05-08T11:00:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 7th, 12:23–13:11 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22801 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Chicago, 2011: Saturday 7 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shankara-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sankara jayanti." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-07", "confidence": "determinate" } ], "quote": "In Chicago, Śaṅkara Jayantī 2011 falls on Saturday 7 May. Pañcamī runs from 06:03 on Sat 7 May to 06:00 on Sun 8 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25044, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2011-05-09T05:26:00-05:00", "utc": "2011-05-09T10:26:00Z", "ms": 1304936759887.3103 }, "end": { "local": "2011-05-10T04:18:48-05:00", "utc": "2011-05-10T09:18:48Z", "ms": 1305019127997.0613 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-09T05:26:00-05:00", "utc": "2011-05-09T10:26:00Z", "ms": 1304936759887.3103 }, "end": { "local": "2011-05-10T04:18:48-05:00", "utc": "2011-05-10T09:18:48Z", "ms": 1305019127997.0613 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-05-09", "window": { "start": { "local": "2011-05-09T12:23:24-05:00", "utc": "2011-05-09T17:23:24Z", "ms": 1304961803605.0854 }, "end": { "local": "2011-05-09T13:11:24-05:00", "utc": "2011-05-09T18:11:24Z", "ms": 1304964683605.0854 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-05-10", "window": { "start": { "local": "2011-05-10T12:23:21-05:00", "utc": "2011-05-10T17:23:21Z", "ms": 1305048200975.7358 }, "end": { "local": "2011-05-10T13:11:21-05:00", "utc": "2011-05-10T18:11:21Z", "ms": 1305051080975.7358 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 05:26 on Mon 9 May to 04:19 on Tue 10 May.", "fact": "2011-05-09T10:26:00Z → 2011-05-10T09:18:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 9th, 12:23–13:11 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25044 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Chicago, 2011: Monday 9 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gangotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-05-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-09", "confidence": "determinate" } ], "quote": "In Chicago, Gaṅgotpatti (Ganga Saptami) 2011 falls on Monday 9 May. Saptamī runs from 05:26 on Mon 9 May to 04:19 on Tue 10 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-05-13", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27690, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-05-12T21:51:41-05:00", "utc": "2011-05-13T02:51:41Z", "ms": 1305255100907.7048 }, "end": { "local": "2011-05-13T18:53:40-05:00", "utc": "2011-05-13T23:53:40Z", "ms": 1305330820009.2146 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-12T21:51:41-05:00", "utc": "2011-05-13T02:51:41Z", "ms": 1305255100907.7048 }, "end": { "local": "2011-05-13T18:53:40-05:00", "utc": "2011-05-13T23:53:40Z", "ms": 1305330820009.2146 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-05-13", "window": { "start": { "local": "2011-05-13T05:33:11-05:00", "utc": "2011-05-13T10:33:11Z", "ms": 1305282790507.0298 }, "end": { "local": "2011-05-13T05:33:11-05:00", "utc": "2011-05-13T10:33:11Z", "ms": 1305282790507.0298 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-05-14", "window": { "start": { "local": "2011-05-14T05:32:08-05:00", "utc": "2011-05-14T10:32:08Z", "ms": 1305369128151.2805 }, "end": { "local": "2011-05-14T05:32:08-05:00", "utc": "2011-05-14T10:32:08Z", "ms": 1305369128151.2805 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:52 on Thu 12 May to 18:54 on Fri 13 May.", "fact": "2011-05-13T02:51:41Z → 2011-05-13T23:53:40Z" }, { "step": "kaala", "text": "Sunrise is at 05:33 on the 13th and 05:32 on the 14th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 13th and is not on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27690 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Chicago, 2011: Friday 13 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": "2011-05-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-13", "confidence": "determinate" } ], "quote": "In Chicago, Mohinī Ekādaśī 2011 falls on Friday 13 May. Ekādaśī runs from 21:52 on Thu 12 May to 18:54 on Fri 13 May and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-05-13", "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/2011/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9032, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2011-05-13T18:53:40-05:00", "utc": "2011-05-13T23:53:40Z", "ms": 1305330820009.2146 }, "end": { "local": "2011-05-14T15:41:48-05:00", "utc": "2011-05-14T20:41:48Z", "ms": 1305405707612.5857 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-13T18:53:40-05:00", "utc": "2011-05-13T23:53:40Z", "ms": 1305330820009.2146 }, "end": { "local": "2011-05-14T15:41:48-05:00", "utc": "2011-05-14T20:41:48Z", "ms": 1305405707612.5857 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-05-13", "window": { "start": { "local": "2011-05-13T12:23:16-05:00", "utc": "2011-05-13T17:23:16Z", "ms": 1305307396325.0647 }, "end": { "local": "2011-05-13T13:11:16-05:00", "utc": "2011-05-13T18:11:16Z", "ms": 1305310276325.0647 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-05-14", "window": { "start": { "local": "2011-05-14T12:23:16-05:00", "utc": "2011-05-14T17:23:16Z", "ms": 1305393795856.1626 }, "end": { "local": "2011-05-14T13:11:16-05:00", "utc": "2011-05-14T18:11:16Z", "ms": 1305396675856.1626 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 18:54 on Fri 13 May to 15:42 on Sat 14 May.", "fact": "2011-05-13T23:53:40Z → 2011-05-14T20:41:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 13th, 12:23–13:11 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 9032 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Chicago, 2011: Saturday 14 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": "2011-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-14", "confidence": "determinate" } ], "quote": "In Chicago, Paraśurāma Dvādaśī 2011 falls on Saturday 14 May. Dvādaśī runs from 18:54 on Fri 13 May to 15:42 on Sat 14 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9032, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2011-05-13T18:53:40-05:00", "utc": "2011-05-13T23:53:40Z", "ms": 1305330820009.2146 }, "end": { "local": "2011-05-14T15:41:48-05:00", "utc": "2011-05-14T20:41:48Z", "ms": 1305405707612.5857 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-13T18:53:40-05:00", "utc": "2011-05-13T23:53:40Z", "ms": 1305330820009.2146 }, "end": { "local": "2011-05-14T15:41:48-05:00", "utc": "2011-05-14T20:41:48Z", "ms": 1305405707612.5857 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-05-13", "window": { "start": { "local": "2011-05-13T12:23:16-05:00", "utc": "2011-05-13T17:23:16Z", "ms": 1305307396325.0647 }, "end": { "local": "2011-05-13T13:11:16-05:00", "utc": "2011-05-13T18:11:16Z", "ms": 1305310276325.0647 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-05-14", "window": { "start": { "local": "2011-05-14T12:23:16-05:00", "utc": "2011-05-14T17:23:16Z", "ms": 1305393795856.1626 }, "end": { "local": "2011-05-14T13:11:16-05:00", "utc": "2011-05-14T18:11:16Z", "ms": 1305396675856.1626 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 18:54 on Fri 13 May to 15:42 on Sat 14 May.", "fact": "2011-05-13T23:53:40Z → 2011-05-14T20:41:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 13th, 12:23–13:11 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 9032 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Chicago, 2011: Saturday 14 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": "2011-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-14", "confidence": "determinate" } ], "quote": "In Chicago, Rukmiṇī Dvādaśī 2011 falls on Saturday 14 May. Dvādaśī runs from 18:54 on Fri 13 May to 15:42 on Sat 14 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/pradosha-vrata?on=2011-05-14", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15636, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-05-14T15:41:48-05:00", "utc": "2011-05-14T20:41:48Z", "ms": 1305405707612.5857 }, "end": { "local": "2011-05-15T12:24:19-05:00", "utc": "2011-05-15T17:24:19Z", "ms": 1305480258557.4377 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-14T15:41:48-05:00", "utc": "2011-05-14T20:41:48Z", "ms": 1305405707612.5857 }, "end": { "local": "2011-05-15T12:24:19-05:00", "utc": "2011-05-15T17:24:19Z", "ms": 1305480258557.4377 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-05-14", "window": { "start": { "local": "2011-05-14T20:02:24-05:00", "utc": "2011-05-15T01:02:24Z", "ms": 1305421343561.0444 }, "end": { "local": "2011-05-14T21:18:13-05:00", "utc": "2011-05-15T02:18:13Z", "ms": 1305425893406.8293 } }, "covered_min": 76, "window_min": 76, "qualifies": true }, { "local_date": "2011-05-15", "window": { "start": { "local": "2011-05-15T20:03:24-05:00", "utc": "2011-05-16T01:03:24Z", "ms": 1305507804455.9905 }, "end": { "local": "2011-05-15T21:18:58-05:00", "utc": "2011-05-16T02:18:58Z", "ms": 1305512338301.6453 } }, "covered_min": 0, "window_min": 76, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:42 on Sat 14 May to 12:24 on Sun 15 May.", "fact": "2011-05-14T20:41:48Z → 2011-05-15T17:24:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:02–21:18 on the 14th, 20:03–21:19 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 76 of 76 minutes on the 14th and 0 of 76 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 15636 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2011: Saturday 14 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": "2011-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-14", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2011 falls on Saturday 14 May. Trayodaśī runs from 15:42 on Sat 14 May to 12:24 on Sun 15 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-05-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27546, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-05-15T12:24:19-05:00", "utc": "2011-05-15T17:24:19Z", "ms": 1305480258557.4377 }, "end": { "local": "2011-05-16T09:10:10-05:00", "utc": "2011-05-16T14:10:10Z", "ms": 1305555010265.6323 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-15T12:24:19-05:00", "utc": "2011-05-15T17:24:19Z", "ms": 1305480258557.4377 }, "end": { "local": "2011-05-16T09:10:10-05:00", "utc": "2011-05-16T14:10:10Z", "ms": 1305555010265.6323 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-05-15", "window": { "start": { "local": "2011-05-15T20:03:24-05:00", "utc": "2011-05-16T01:03:24Z", "ms": 1305507804455.9905 }, "end": { "local": "2011-05-15T21:18:58-05:00", "utc": "2011-05-16T02:18:58Z", "ms": 1305512338301.6453 } }, "covered_min": 76, "window_min": 76, "qualifies": true }, { "local_date": "2011-05-16", "window": { "start": { "local": "2011-05-16T20:04:25-05:00", "utc": "2011-05-17T01:04:25Z", "ms": 1305594264799.1807 }, "end": { "local": "2011-05-16T21:19:43-05:00", "utc": "2011-05-17T02:19:43Z", "ms": 1305598782941.3354 } }, "covered_min": 0, "window_min": 75, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:24 on Sun 15 May to 09:10 on Mon 16 May.", "fact": "2011-05-15T17:24:19Z → 2011-05-16T14:10:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:03–21:19 on the 15th, 20:04–21:20 on the 16th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 76 of 76 minutes on the 15th and 0 of 75 on the 16th.", "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 27546 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Chicago, 2011: Sunday 15 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": "2011-05-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-15", "confidence": "determinate" } ], "quote": "In Chicago, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 2011 falls on Sunday 15 May. Caturdaśī runs from 12:24 on Sun 15 May to 09:10 on Mon 16 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11586, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-05-16T09:10:10-05:00", "utc": "2011-05-16T14:10:10Z", "ms": 1305555010265.6323 }, "end": { "local": "2011-05-17T06:08:39-05:00", "utc": "2011-05-17T11:08:39Z", "ms": 1305630518594.9841 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-16T09:10:10-05:00", "utc": "2011-05-16T14:10:10Z", "ms": 1305555010265.6323 }, "end": { "local": "2011-05-17T06:08:39-05:00", "utc": "2011-05-17T11:08:39Z", "ms": 1305630518594.9841 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-05-16", "window": { "start": { "local": "2011-05-16T12:23:17-05:00", "utc": "2011-05-16T17:23:17Z", "ms": 1305566596548.791 }, "end": { "local": "2011-05-16T13:11:17-05:00", "utc": "2011-05-16T18:11:17Z", "ms": 1305569476548.791 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-05-17", "window": { "start": { "local": "2011-05-17T12:23:18-05:00", "utc": "2011-05-17T17:23:18Z", "ms": 1305652997713.0947 }, "end": { "local": "2011-05-17T13:11:18-05:00", "utc": "2011-05-17T18:11:18Z", "ms": 1305655877713.0947 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:10 on Mon 16 May to 06:09 on Tue 17 May.", "fact": "2011-05-16T14:10:10Z → 2011-05-17T11:08:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 16th, 12:23–13:11 on the 17th.", "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 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11586 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Chicago, 2011: Monday 16 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": "2011-05-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-16", "confidence": "determinate" } ], "quote": "In Chicago, Buddha Pūrṇimā 2011 falls on Monday 16 May. Pūrṇimā runs from 09:10 on Mon 16 May to 06:09 on Tue 17 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11586, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-05-16T09:10:10-05:00", "utc": "2011-05-16T14:10:10Z", "ms": 1305555010265.6323 }, "end": { "local": "2011-05-17T06:08:39-05:00", "utc": "2011-05-17T11:08:39Z", "ms": 1305630518594.9841 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-16T09:10:10-05:00", "utc": "2011-05-16T14:10:10Z", "ms": 1305555010265.6323 }, "end": { "local": "2011-05-17T06:08:39-05:00", "utc": "2011-05-17T11:08:39Z", "ms": 1305630518594.9841 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-05-16", "window": { "start": { "local": "2011-05-16T12:23:17-05:00", "utc": "2011-05-16T17:23:17Z", "ms": 1305566596548.791 }, "end": { "local": "2011-05-16T13:11:17-05:00", "utc": "2011-05-16T18:11:17Z", "ms": 1305569476548.791 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-05-17", "window": { "start": { "local": "2011-05-17T12:23:18-05:00", "utc": "2011-05-17T17:23:18Z", "ms": 1305652997713.0947 }, "end": { "local": "2011-05-17T13:11:18-05:00", "utc": "2011-05-17T18:11:18Z", "ms": 1305655877713.0947 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:10 on Mon 16 May to 06:09 on Tue 17 May.", "fact": "2011-05-16T14:10:10Z → 2011-05-17T11:08:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 16th, 12:23–13:11 on the 17th.", "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 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 11586 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Chicago, 2011: Monday 16 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": "2011-05-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-16", "confidence": "determinate" } ], "quote": "In Chicago, Sampat Gaurī Vrata 2011 falls on Monday 16 May. Pūrṇimā runs from 09:10 on Mon 16 May to 06:09 on Tue 17 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/sankashta-chaturthi?on=2011-05-19", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-19", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 2060, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-05-19T23:47:27-05:00", "utc": "2011-05-20T04:47:27Z", "ms": 1305866847098.3247 }, "end": { "local": "2011-05-20T22:58:30-05:00", "utc": "2011-05-21T03:58:30Z", "ms": 1305950309697.5327 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-19T23:47:27-05:00", "utc": "2011-05-20T04:47:27Z", "ms": 1305866847098.3247 }, "end": { "local": "2011-05-20T22:58:30-05:00", "utc": "2011-05-21T03:58:30Z", "ms": 1305950309697.5327 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-05-19", "window": { "start": { "local": "2011-05-19T22:48:47-05:00", "utc": "2011-05-20T03:48:47Z", "ms": 1305863326594.992 }, "end": { "local": "2011-05-19T22:48:47-05:00", "utc": "2011-05-20T03:48:47Z", "ms": 1305863326594.992 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-05-20", "window": { "start": { "local": "2011-05-20T23:32:50-05:00", "utc": "2011-05-21T04:32:50Z", "ms": 1305952369908.41 }, "end": { "local": "2011-05-20T23:32:50-05:00", "utc": "2011-05-21T04:32:50Z", "ms": 1305952369908.41 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:47 on Thu 19 May to 22:58 on Fri 20 May.", "fact": "2011-05-20T04:47:27Z → 2011-05-21T03:58:30Z" }, { "step": "kaala", "text": "Moonrise is at 22:49 on the 19th and 23:33 on the 20th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 19th and is not on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 2060 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2011: Thursday 19 May.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-05-19", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-19", "confidence": "boundary" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2011 falls on Thursday 19 May. Caturthī runs from 23:47 on Thu 19 May to 22:58 on Fri 20 May, and is current at moonrise on neither day.", "cite": "https://ahargana.org/chicago/festivals/2011/sankashta-chaturthi?on=2011-05-19", "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/2011/ekadashi?on=2011-05-28", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7818, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-05-27T07:31:34-05:00", "utc": "2011-05-27T12:31:34Z", "ms": 1306499493675.4692 }, "end": { "local": "2011-05-28T09:52:26-05:00", "utc": "2011-05-28T14:52:26Z", "ms": 1306594346449.481 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-27T07:31:34-05:00", "utc": "2011-05-27T12:31:34Z", "ms": 1306499493675.4692 }, "end": { "local": "2011-05-28T09:52:26-05:00", "utc": "2011-05-28T14:52:26Z", "ms": 1306594346449.481 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-05-27", "window": { "start": { "local": "2011-05-27T05:21:15-05:00", "utc": "2011-05-27T10:21:15Z", "ms": 1306491675261.987 }, "end": { "local": "2011-05-27T05:21:15-05:00", "utc": "2011-05-27T10:21:15Z", "ms": 1306491675261.987 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-05-28", "window": { "start": { "local": "2011-05-28T05:20:38-05:00", "utc": "2011-05-28T10:20:38Z", "ms": 1306578038152.0415 }, "end": { "local": "2011-05-28T05:20:38-05:00", "utc": "2011-05-28T10:20:38Z", "ms": 1306578038152.0415 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:32 on Fri 27 May to 09:52 on Sat 28 May.", "fact": "2011-05-27T12:31:34Z → 2011-05-28T14:52:26Z" }, { "step": "kaala", "text": "Sunrise is at 05:21 on the 27th and 05:21 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 7818 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Chicago, 2011: Saturday 28 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-05-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-28", "confidence": "determinate" } ], "quote": "In Chicago, Aparā Ekādaśī 2011 falls on Saturday 28 May. Ekādaśī runs from 07:32 on Fri 27 May to 09:52 on Sat 28 May and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-05-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-05-29", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23402, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-05-29T12:00:09-05:00", "utc": "2011-05-29T17:00:09Z", "ms": 1306688408603.2317 }, "end": { "local": "2011-05-30T13:47:10-05:00", "utc": "2011-05-30T18:47:10Z", "ms": 1306781229888.6086 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-29T12:00:09-05:00", "utc": "2011-05-29T17:00:09Z", "ms": 1306688408603.2317 }, "end": { "local": "2011-05-30T13:47:10-05:00", "utc": "2011-05-30T18:47:10Z", "ms": 1306781229888.6086 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-05-29", "window": { "start": { "local": "2011-05-29T20:16:23-05:00", "utc": "2011-05-30T01:16:23Z", "ms": 1306718182969.1953 }, "end": { "local": "2011-05-29T21:28:48-05:00", "utc": "2011-05-30T02:28:48Z", "ms": 1306722527892.7698 } }, "covered_min": 72, "window_min": 72, "qualifies": true }, { "local_date": "2011-05-30", "window": { "start": { "local": "2011-05-30T20:17:12-05:00", "utc": "2011-05-31T01:17:12Z", "ms": 1306804631658.1846 }, "end": { "local": "2011-05-30T21:29:26-05:00", "utc": "2011-05-31T02:29:26Z", "ms": 1306808965940.75 } }, "covered_min": 0, "window_min": 72, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:00 on Sun 29 May to 13:47 on Mon 30 May.", "fact": "2011-05-29T17:00:09Z → 2011-05-30T18:47:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:16–21:29 on the 29th, 20:17–21:29 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 72 of 72 minutes on the 29th and 0 of 72 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 23402 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2011: Sunday 29 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-05-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-29", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2011 falls on Sunday 29 May. Trayodaśī runs from 12:00 on Sun 29 May to 13:47 on Mon 30 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-05-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/shivaratri?on=2011-05-30", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-05-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33329, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-05-30T13:47:10-05:00", "utc": "2011-05-30T18:47:10Z", "ms": 1306781229888.6086 }, "end": { "local": "2011-05-31T15:08:46-05:00", "utc": "2011-05-31T20:08:46Z", "ms": 1306872525885.6765 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2011-05-30T13:47:10-05:00", "utc": "2011-05-30T18:47:10Z", "ms": 1306781229888.6086 }, "end": { "local": "2011-05-31T15:08:46-05:00", "utc": "2011-05-31T20:08:46Z", "ms": 1306872525885.6765 } }, "kaala": "nishita", "days": [ { "local_date": "2011-05-30", "window": { "start": { "local": "2011-05-31T00:24:05-05:00", "utc": "2011-05-31T05:24:05Z", "ms": 1306819445217.8052 }, "end": { "local": "2011-05-31T01:12:05-05:00", "utc": "2011-05-31T06:12:05Z", "ms": 1306822325217.8052 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-05-31", "window": { "start": { "local": "2011-06-01T00:24:14-05:00", "utc": "2011-06-01T05:24:14Z", "ms": 1306905854430.8882 }, "end": { "local": "2011-06-01T01:12:14-05:00", "utc": "2011-06-01T06:12:14Z", "ms": 1306908734430.8882 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:47 on Mon 30 May to 15:09 on Tue 31 May.", "fact": "2011-05-30T18:47:10Z → 2011-05-31T20:08:46Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:24–01:12 on the 30th, 00:24–01:12 on the 31st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 30th and 0 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33329 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2011: Monday 30 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": "2011-05-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-05-30", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2011 falls on Monday 30 May. Caturdaśī runs from 13:47 on Mon 30 May to 15:09 on Tue 31 May and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/shivaratri?on=2011-05-30", "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/2011/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-06-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9874, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2011-06-03T16:26:06-05:00", "utc": "2011-06-03T21:26:06Z", "ms": 1307136365968.9023 }, "end": { "local": "2011-06-04T15:57:39-05:00", "utc": "2011-06-04T20:57:39Z", "ms": 1307221059407.4685 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2011-06-03T16:26:06-05:00", "utc": "2011-06-03T21:26:06Z", "ms": 1307136365968.9023 }, "end": { "local": "2011-06-04T15:57:39-05:00", "utc": "2011-06-04T20:57:39Z", "ms": 1307221059407.4685 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-06-03", "window": { "start": { "local": "2011-06-03T12:24:56-05:00", "utc": "2011-06-03T17:24:56Z", "ms": 1307121895927.7822 }, "end": { "local": "2011-06-03T13:12:56-05:00", "utc": "2011-06-03T18:12:56Z", "ms": 1307124775927.7822 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-06-04", "window": { "start": { "local": "2011-06-04T12:25:06-05:00", "utc": "2011-06-04T17:25:06Z", "ms": 1307208305621.4893 }, "end": { "local": "2011-06-04T13:13:06-05:00", "utc": "2011-06-04T18:13:06Z", "ms": 1307211185621.4893 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 16:26 on Fri 3 Jun to 15:58 on Sat 4 Jun.", "fact": "2011-06-03T21:26:06Z → 2011-06-04T20:57:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 3rd, 12:25–13:13 on the 4th.", "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 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 9874 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Chicago, 2011: Saturday 4 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rambha-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Rambha trtiya (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-06-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-06-04", "confidence": "determinate" } ], "quote": "In Chicago, Rambhā Tṛtīyā 2011 falls on Saturday 4 June. Tṛtīyā runs from 16:26 on Fri 3 Jun to 15:58 on Sat 4 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/vinayaka-chaturthi?on=2011-06-05", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-06-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6671, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-06-04T15:57:39-05:00", "utc": "2011-06-04T20:57:39Z", "ms": 1307221059407.4685 }, "end": { "local": "2011-06-05T15:04:27-05:00", "utc": "2011-06-05T20:04:27Z", "ms": 1307304266710.7407 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2011-06-04T15:57:39-05:00", "utc": "2011-06-04T20:57:39Z", "ms": 1307221059407.4685 }, "end": { "local": "2011-06-05T15:04:27-05:00", "utc": "2011-06-05T20:04:27Z", "ms": 1307304266710.7407 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-06-04", "window": { "start": { "local": "2011-06-04T12:25:06-05:00", "utc": "2011-06-04T17:25:06Z", "ms": 1307208305621.4893 }, "end": { "local": "2011-06-04T13:13:06-05:00", "utc": "2011-06-04T18:13:06Z", "ms": 1307211185621.4893 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-06-05", "window": { "start": { "local": "2011-06-05T12:25:16-05:00", "utc": "2011-06-05T17:25:16Z", "ms": 1307294715634.2148 }, "end": { "local": "2011-06-05T13:13:16-05:00", "utc": "2011-06-05T18:13:16Z", "ms": 1307297595634.2148 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:58 on Sat 4 Jun to 15:04 on Sun 5 Jun.", "fact": "2011-06-04T20:57:39Z → 2011-06-05T20:04:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 4th, 12:25–13:13 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6671 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2011: Sunday 5 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": "2011-06-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-06-05", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2011 falls on Sunday 5 June. Caturthī runs from 15:58 on Sat 4 Jun to 15:04 on Sun 5 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/vinayaka-chaturthi?on=2011-06-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-06-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 880, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2011-06-06T13:48:14-05:00", "utc": "2011-06-06T18:48:14Z", "ms": 1307386093626.4216 }, "end": { "local": "2011-06-07T12:10:57-05:00", "utc": "2011-06-07T17:10:57Z", "ms": 1307466656833.3794 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2011-06-06T13:48:14-05:00", "utc": "2011-06-06T18:48:14Z", "ms": 1307386093626.4216 }, "end": { "local": "2011-06-07T12:10:57-05:00", "utc": "2011-06-07T17:10:57Z", "ms": 1307466656833.3794 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-06-06", "window": { "start": { "local": "2011-06-06T12:25:26-05:00", "utc": "2011-06-06T17:25:26Z", "ms": 1307381125943.6782 }, "end": { "local": "2011-06-06T13:13:26-05:00", "utc": "2011-06-06T18:13:26Z", "ms": 1307384005943.6782 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-06-07", "window": { "start": { "local": "2011-06-07T12:25:37-05:00", "utc": "2011-06-07T17:25:37Z", "ms": 1307467536527.7969 }, "end": { "local": "2011-06-07T13:13:37-05:00", "utc": "2011-06-07T18:13:37Z", "ms": 1307470416527.7969 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 13:48 on Mon 6 Jun to 12:11 on Tue 7 Jun.", "fact": "2011-06-06T18:48:14Z → 2011-06-07T17:10:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 6th, 12:26–13:14 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: paraviddha → second-day · margin 880 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Chicago, 2011: Tuesday 7 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aranya-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-06-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-06-07", "confidence": "determinate" } ], "quote": "In Chicago, Araṇya Gaurī Vrata 2011 falls on Tuesday 7 June. Ṣaṣṭhī runs from 13:48 on Mon 6 Jun to 12:11 on Tue 7 Jun, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-06-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 880, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2011-06-06T13:48:14-05:00", "utc": "2011-06-06T18:48:14Z", "ms": 1307386093626.4216 }, "end": { "local": "2011-06-07T12:10:57-05:00", "utc": "2011-06-07T17:10:57Z", "ms": 1307466656833.3794 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2011-06-06T13:48:14-05:00", "utc": "2011-06-06T18:48:14Z", "ms": 1307386093626.4216 }, "end": { "local": "2011-06-07T12:10:57-05:00", "utc": "2011-06-07T17:10:57Z", "ms": 1307466656833.3794 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-06-06", "window": { "start": { "local": "2011-06-06T12:25:26-05:00", "utc": "2011-06-06T17:25:26Z", "ms": 1307381125943.6782 }, "end": { "local": "2011-06-06T13:13:26-05:00", "utc": "2011-06-06T18:13:26Z", "ms": 1307384005943.6782 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-06-07", "window": { "start": { "local": "2011-06-07T12:25:37-05:00", "utc": "2011-06-07T17:25:37Z", "ms": 1307467536527.7969 }, "end": { "local": "2011-06-07T13:13:37-05:00", "utc": "2011-06-07T18:13:37Z", "ms": 1307470416527.7969 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 13:48 on Mon 6 Jun to 12:11 on Tue 7 Jun.", "fact": "2011-06-06T18:48:14Z → 2011-06-07T17:10:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 6th, 12:26–13:14 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: purvaviddha → second-day · margin 880 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Chicago, 2011: Tuesday 7 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi-jyaishtha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-06-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-06-06", "confidence": "determinate" } ], "quote": "In Chicago, Skanda Ṣaṣṭhī (Jyaiṣṭha) 2011 falls on Tuesday 7 June. Ṣaṣṭhī runs from 13:48 on Mon 6 Jun to 12:11 on Tue 7 Jun, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-06-11", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-06-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7895, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-06-11T03:03:56-05:00", "utc": "2011-06-11T08:03:56Z", "ms": 1307779435912.6304 }, "end": { "local": "2011-06-12T00:26:15-05:00", "utc": "2011-06-12T05:26:15Z", "ms": 1307856374995.0981 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2011-06-11T03:03:56-05:00", "utc": "2011-06-11T08:03:56Z", "ms": 1307779435912.6304 }, "end": { "local": "2011-06-12T00:26:15-05:00", "utc": "2011-06-12T05:26:15Z", "ms": 1307856374995.0981 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-06-11", "window": { "start": { "local": "2011-06-11T05:15:31-05:00", "utc": "2011-06-11T10:15:31Z", "ms": 1307787331050.9075 }, "end": { "local": "2011-06-11T05:15:31-05:00", "utc": "2011-06-11T10:15:31Z", "ms": 1307787331050.9075 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-06-12", "window": { "start": { "local": "2011-06-12T05:15:24-05:00", "utc": "2011-06-12T10:15:24Z", "ms": 1307873724452.3564 }, "end": { "local": "2011-06-12T05:15:24-05:00", "utc": "2011-06-12T10:15:24Z", "ms": 1307873724452.3564 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:04 on Sat 11 Jun to 00:26 on Sun 12 Jun.", "fact": "2011-06-11T08:03:56Z → 2011-06-12T05:26:15Z" }, { "step": "kaala", "text": "Sunrise is at 05:16 on the 11th and 05:15 on the 12th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 11th and is not on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7895 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Chicago, 2011: Saturday 11 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-06-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-06-11", "confidence": "determinate" } ], "quote": "In Chicago, Nirjalā Ekādaśī 2011 falls on Saturday 11 June. Ekādaśī runs from 03:04 on Sat 11 Jun to 00:26 on Sun 12 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-06-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-06-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30934, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2011-06-12T00:26:15-05:00", "utc": "2011-06-12T05:26:15Z", "ms": 1307856374995.0981 }, "end": { "local": "2011-06-12T21:50:07-05:00", "utc": "2011-06-13T02:50:07Z", "ms": 1307933406610.8296 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2011-06-12T00:26:15-05:00", "utc": "2011-06-12T05:26:15Z", "ms": 1307856374995.0981 }, "end": { "local": "2011-06-12T21:50:07-05:00", "utc": "2011-06-13T02:50:07Z", "ms": 1307933406610.8296 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-06-11", "window": { "start": { "local": "2011-06-11T12:26:21-05:00", "utc": "2011-06-11T17:26:21Z", "ms": 1307813181190.0264 }, "end": { "local": "2011-06-11T13:14:21-05:00", "utc": "2011-06-11T18:14:21Z", "ms": 1307816061190.0264 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-06-12", "window": { "start": { "local": "2011-06-12T12:26:33-05:00", "utc": "2011-06-12T17:26:33Z", "ms": 1307899592838.7551 }, "end": { "local": "2011-06-12T13:14:33-05:00", "utc": "2011-06-12T18:14:33Z", "ms": 1307902472838.7551 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 00:26 on Sun 12 Jun to 21:50 on Sun 12 Jun.", "fact": "2011-06-12T05:26:15Z → 2011-06-13T02:50:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 11th, 12:27–13:15 on the 12th.", "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 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30934 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Chicago, 2011: Sunday 12 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": "2011-06-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-06-12", "confidence": "determinate" } ], "quote": "In Chicago, Śrī Rāma Dvādaśī 2011 falls on Sunday 12 June. Dvādaśī runs from 00:26 on Sun 12 Jun to 21:50 on Sun 12 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/pradosha-vrata?on=2011-06-12", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-06-12", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 828, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-06-12T21:50:07-05:00", "utc": "2011-06-13T02:50:07Z", "ms": 1307933406610.8296 }, "end": { "local": "2011-06-13T19:21:36-05:00", "utc": "2011-06-14T00:21:36Z", "ms": 1308010895986.0276 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2011-06-12T21:50:07-05:00", "utc": "2011-06-13T02:50:07Z", "ms": 1307933406610.8296 }, "end": { "local": "2011-06-13T19:21:36-05:00", "utc": "2011-06-14T00:21:36Z", "ms": 1308010895986.0276 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-06-12", "window": { "start": { "local": "2011-06-12T20:25:41-05:00", "utc": "2011-06-13T01:25:41Z", "ms": 1307928341225.1538 }, "end": { "local": "2011-06-12T21:36:18-05:00", "utc": "2011-06-13T02:36:18Z", "ms": 1307932578381.0364 } }, "covered_min": 0, "window_min": 71, "qualifies": false }, { "local_date": "2011-06-13", "window": { "start": { "local": "2011-06-13T20:26:09-05:00", "utc": "2011-06-14T01:26:09Z", "ms": 1308014769393.7751 }, "end": { "local": "2011-06-13T21:36:42-05:00", "utc": "2011-06-14T02:36:42Z", "ms": 1308019002457.5151 } }, "covered_min": 0, "window_min": 71, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:50 on Sun 12 Jun to 19:22 on Mon 13 Jun.", "fact": "2011-06-13T02:50:07Z → 2011-06-14T00:21:36Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:26–21:36 on the 12th, 20:26–21:37 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 71 minutes on the 12th and 0 of 71 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither evening qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 828 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2011: Sunday 12 June.", "fact": "confidence: boundary (absent-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": "2011-06-12", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-06-12", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2011 falls on Sunday 12 June. Trayodaśī runs from 21:50 on Sun 12 Jun to 19:22 on Mon 13 Jun, and reaches pradoṣa on neither day.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-06-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-06-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11963, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-06-14T17:07:13-05:00", "utc": "2011-06-14T22:07:13Z", "ms": 1308089232770.451 }, "end": { "local": "2011-06-15T15:13:35-05:00", "utc": "2011-06-15T20:13:35Z", "ms": 1308168815122.272 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2011-06-14T17:07:13-05:00", "utc": "2011-06-14T22:07:13Z", "ms": 1308089232770.451 }, "end": { "local": "2011-06-15T15:13:35-05:00", "utc": "2011-06-15T20:13:35Z", "ms": 1308168815122.272 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-06-14", "window": { "start": { "local": "2011-06-14T20:26:36-05:00", "utc": "2011-06-15T01:26:36Z", "ms": 1308101195804.7156 }, "end": { "local": "2011-06-14T21:37:05-05:00", "utc": "2011-06-15T02:37:05Z", "ms": 1308105425281.3223 } }, "covered_min": 70, "window_min": 70, "qualifies": true }, { "local_date": "2011-06-15", "window": { "start": { "local": "2011-06-15T20:27:00-05:00", "utc": "2011-06-16T01:27:00Z", "ms": 1308187620428.7249 }, "end": { "local": "2011-06-15T21:37:27-05:00", "utc": "2011-06-16T02:37:27Z", "ms": 1308191846826.1924 } }, "covered_min": 0, "window_min": 70, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:07 on Tue 14 Jun to 15:14 on Wed 15 Jun.", "fact": "2011-06-14T22:07:13Z → 2011-06-15T20:13:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:27–21:37 on the 14th, 20:27–21:37 on the 15th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 70 of 70 minutes on the 14th and 0 of 70 on the 15th.", "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 11963 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Chicago, 2011: Tuesday 14 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": "2011-06-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-06-14", "confidence": "determinate" } ], "quote": "In Chicago, Vaṭa Sāvitrī Vrata 2011 falls on Tuesday 14 June. Pūrṇimā runs from 17:07 on Tue 14 Jun to 15:14 on Wed 15 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/sankashta-chaturthi?on=2011-06-18", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-06-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36069, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-06-18T12:37:07-05:00", "utc": "2011-06-18T17:37:07Z", "ms": 1308418627361.1555 }, "end": { "local": "2011-06-19T13:00:06-05:00", "utc": "2011-06-19T18:00:06Z", "ms": 1308506406155.9658 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-06-18T12:37:07-05:00", "utc": "2011-06-18T17:37:07Z", "ms": 1308418627361.1555 }, "end": { "local": "2011-06-19T13:00:06-05:00", "utc": "2011-06-19T18:00:06Z", "ms": 1308506406155.9658 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-06-18", "window": { "start": { "local": "2011-06-18T22:38:16-05:00", "utc": "2011-06-19T03:38:16Z", "ms": 1308454695934.2427 }, "end": { "local": "2011-06-18T22:38:16-05:00", "utc": "2011-06-19T03:38:16Z", "ms": 1308454695934.2427 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-06-19", "window": { "start": { "local": "2011-06-19T23:06:50-05:00", "utc": "2011-06-20T04:06:50Z", "ms": 1308542810212.033 }, "end": { "local": "2011-06-19T23:06:50-05:00", "utc": "2011-06-20T04:06:50Z", "ms": 1308542810212.033 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:37 on Sat 18 Jun to 13:00 on Sun 19 Jun.", "fact": "2011-06-18T17:37:07Z → 2011-06-19T18:00:06Z" }, { "step": "kaala", "text": "Moonrise is at 22:38 on the 18th and 23:07 on the 19th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 18th and is not on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36069 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2011: Saturday 18 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": "2011-06-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-06-18", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2011 falls on Saturday 18 June. Caturthī runs from 12:37 on Sat 18 Jun to 13:00 on Sun 19 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/sankashta-chaturthi?on=2011-06-18", "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/2011/ekadashi?on=2011-06-26", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-06-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10868, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-06-26T00:28:41-05:00", "utc": "2011-06-26T05:28:41Z", "ms": 1309066120990.1804 }, "end": { "local": "2011-06-27T02:16:37-05:00", "utc": "2011-06-27T07:16:37Z", "ms": 1309158996894.015 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-06-26T00:28:41-05:00", "utc": "2011-06-26T05:28:41Z", "ms": 1309066120990.1804 }, "end": { "local": "2011-06-27T02:16:37-05:00", "utc": "2011-06-27T07:16:37Z", "ms": 1309158996894.015 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-06-26", "window": { "start": { "local": "2011-06-26T05:17:22-05:00", "utc": "2011-06-26T10:17:22Z", "ms": 1309083442000.5928 }, "end": { "local": "2011-06-26T05:17:22-05:00", "utc": "2011-06-26T10:17:22Z", "ms": 1309083442000.5928 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-06-27", "window": { "start": { "local": "2011-06-27T05:17:45-05:00", "utc": "2011-06-27T10:17:45Z", "ms": 1309169864710.2188 }, "end": { "local": "2011-06-27T05:17:45-05:00", "utc": "2011-06-27T10:17:45Z", "ms": 1309169864710.2188 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:29 on Sun 26 Jun to 02:17 on Mon 27 Jun.", "fact": "2011-06-26T05:28:41Z → 2011-06-27T07:16:37Z" }, { "step": "kaala", "text": "Sunrise is at 05:17 on the 26th and 05:18 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 10868 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Chicago, 2011: Sunday 26 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-06-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-06-26", "confidence": "determinate" } ], "quote": "In Chicago, Yoginī Ekādaśī 2011 falls on Sunday 26 June. Ekādaśī runs from 00:29 on Sun 26 Jun to 02:17 on Mon 27 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-06-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-06-28", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-06-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21259, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-06-28T03:34:16-05:00", "utc": "2011-06-28T08:34:16Z", "ms": 1309250056126.4138 }, "end": { "local": "2011-06-29T04:16:50-05:00", "utc": "2011-06-29T09:16:50Z", "ms": 1309339009901.5298 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-06-28T03:34:16-05:00", "utc": "2011-06-28T08:34:16Z", "ms": 1309250056126.4138 }, "end": { "local": "2011-06-29T04:16:50-05:00", "utc": "2011-06-29T09:16:50Z", "ms": 1309339009901.5298 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-06-27", "window": { "start": { "local": "2011-06-27T20:29:27-05:00", "utc": "2011-06-28T01:29:27Z", "ms": 1309224567065.2002 }, "end": { "local": "2011-06-27T21:39:57-05:00", "utc": "2011-06-28T02:39:57Z", "ms": 1309228796680.815 } }, "covered_min": 0, "window_min": 70, "qualifies": false }, { "local_date": "2011-06-28", "window": { "start": { "local": "2011-06-28T20:29:26-05:00", "utc": "2011-06-29T01:29:26Z", "ms": 1309310966225.2466 }, "end": { "local": "2011-06-28T21:39:59-05:00", "utc": "2011-06-29T02:39:59Z", "ms": 1309315199445.7869 } }, "covered_min": 71, "window_min": 71, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:34 on Tue 28 Jun to 04:17 on Wed 29 Jun.", "fact": "2011-06-28T08:34:16Z → 2011-06-29T09:16:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:29–21:40 on the 27th, 20:29–21:40 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 70 minutes on the 27th and 71 of 71 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 21259 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2011: Tuesday 28 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": "2011-06-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-06-28", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2011 falls on Tuesday 28 June. Trayodaśī runs from 03:34 on Tue 28 Jun to 04:17 on Wed 29 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-06-28", "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/2011/shivaratri?on=2011-06-29", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-06-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10729, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-06-29T04:16:50-05:00", "utc": "2011-06-29T09:16:50Z", "ms": 1309339009901.5298 }, "end": { "local": "2011-06-30T04:22:54-05:00", "utc": "2011-06-30T09:22:54Z", "ms": 1309425774275.9844 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-06-29T04:16:50-05:00", "utc": "2011-06-29T09:16:50Z", "ms": 1309339009901.5298 }, "end": { "local": "2011-06-30T04:22:54-05:00", "utc": "2011-06-30T09:22:54Z", "ms": 1309425774275.9844 } }, "kaala": "nishita", "days": [ { "local_date": "2011-06-28", "window": { "start": { "local": "2011-06-29T00:30:01-05:00", "utc": "2011-06-29T05:30:01Z", "ms": 1309325400802.2725 }, "end": { "local": "2011-06-29T01:18:01-05:00", "utc": "2011-06-29T06:18:01Z", "ms": 1309328280802.2725 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-06-29", "window": { "start": { "local": "2011-06-30T00:30:13-05:00", "utc": "2011-06-30T05:30:13Z", "ms": 1309411813280.7026 }, "end": { "local": "2011-06-30T01:18:13-05:00", "utc": "2011-06-30T06:18:13Z", "ms": 1309414693280.7026 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:17 on Wed 29 Jun to 04:23 on Thu 30 Jun.", "fact": "2011-06-29T09:16:50Z → 2011-06-30T09:22:54Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:30–01:18 on the 28th, 00:30–01:18 on the 29th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10729 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2011: Wednesday 29 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": "2011-06-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-06-29", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2011 falls on Wednesday 29 June. Caturdaśī runs from 04:17 on Wed 29 Jun to 04:23 on Thu 30 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/shivaratri?on=2011-06-29", "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/2011/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34629, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2011-07-02T02:53:24-05:00", "utc": "2011-07-02T07:53:24Z", "ms": 1309593204227.7778 }, "end": { "local": "2011-07-03T01:26:10-05:00", "utc": "2011-07-03T06:26:10Z", "ms": 1309674369788.5508 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-07-02T02:53:24-05:00", "utc": "2011-07-02T07:53:24Z", "ms": 1309593204227.7778 }, "end": { "local": "2011-07-03T01:26:10-05:00", "utc": "2011-07-03T06:26:10Z", "ms": 1309674369788.5508 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-07-02", "window": { "start": { "local": "2011-07-02T12:30:33-05:00", "utc": "2011-07-02T17:30:33Z", "ms": 1309627832909.8594 }, "end": { "local": "2011-07-02T13:18:33-05:00", "utc": "2011-07-02T18:18:33Z", "ms": 1309630712909.8594 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-07-03", "window": { "start": { "local": "2011-07-03T12:30:44-05:00", "utc": "2011-07-03T17:30:44Z", "ms": 1309714243568.42 }, "end": { "local": "2011-07-03T13:18:44-05:00", "utc": "2011-07-03T18:18:44Z", "ms": 1309717123568.42 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 02:53 on Sat 2 Jul to 01:26 on Sun 3 Jul.", "fact": "2011-07-02T07:53:24Z → 2011-07-03T06:26:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 2nd, 12:31–13:19 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34629 s" }, { "step": "ruling", "text": "Rathayātrā, Chicago, 2011: Saturday 2 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rathayatra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Rathayatra (paraviddha, special when combined with naksatra 'Pusya')" } ], "not_evaluated": "The row calls the day special with Puṣya nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-07-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-02", "confidence": "determinate" } ], "quote": "In Chicago, Rathayātrā 2011 falls on Saturday 2 July. Dvitīyā runs from 02:53 on Sat 2 Jul to 01:26 on Sun 3 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/vinayaka-chaturthi?on=2011-07-04", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29681, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-07-03T23:37:41-05:00", "utc": "2011-07-04T04:37:41Z", "ms": 1309754261027.502 }, "end": { "local": "2011-07-04T21:33:35-05:00", "utc": "2011-07-05T02:33:35Z", "ms": 1309833215281.1597 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-07-03T23:37:41-05:00", "utc": "2011-07-04T04:37:41Z", "ms": 1309754261027.502 }, "end": { "local": "2011-07-04T21:33:35-05:00", "utc": "2011-07-05T02:33:35Z", "ms": 1309833215281.1597 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-07-03", "window": { "start": { "local": "2011-07-03T12:30:44-05:00", "utc": "2011-07-03T17:30:44Z", "ms": 1309714243568.42 }, "end": { "local": "2011-07-03T13:18:44-05:00", "utc": "2011-07-03T18:18:44Z", "ms": 1309717123568.42 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-07-04", "window": { "start": { "local": "2011-07-04T12:30:54-05:00", "utc": "2011-07-04T17:30:54Z", "ms": 1309800653919.252 }, "end": { "local": "2011-07-04T13:18:54-05:00", "utc": "2011-07-04T18:18:54Z", "ms": 1309803533919.252 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:38 on Sun 3 Jul to 21:34 on Mon 4 Jul.", "fact": "2011-07-04T04:37:41Z → 2011-07-05T02:33:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 3rd, 12:31–13:19 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 3rd and 48 of 48 on the 4th.", "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 29681 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2011: Monday 4 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": "2011-07-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-04", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2011 falls on Monday 4 July. Caturthī runs from 23:38 on Sun 3 Jul to 21:34 on Mon 4 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/vinayaka-chaturthi?on=2011-07-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21612, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2011-07-04T21:33:35-05:00", "utc": "2011-07-05T02:33:35Z", "ms": 1309833215281.1597 }, "end": { "local": "2011-07-05T19:19:16-05:00", "utc": "2011-07-06T00:19:16Z", "ms": 1309911555782.2637 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-07-04T21:33:35-05:00", "utc": "2011-07-05T02:33:35Z", "ms": 1309833215281.1597 }, "end": { "local": "2011-07-05T19:19:16-05:00", "utc": "2011-07-06T00:19:16Z", "ms": 1309911555782.2637 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-07-04", "window": { "start": { "local": "2011-07-04T12:30:54-05:00", "utc": "2011-07-04T17:30:54Z", "ms": 1309800653919.252 }, "end": { "local": "2011-07-04T13:18:54-05:00", "utc": "2011-07-04T18:18:54Z", "ms": 1309803533919.252 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-07-05", "window": { "start": { "local": "2011-07-05T12:31:04-05:00", "utc": "2011-07-05T17:31:04Z", "ms": 1309887063938.4905 }, "end": { "local": "2011-07-05T13:19:04-05:00", "utc": "2011-07-05T18:19:04Z", "ms": 1309889943938.4905 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 21:34 on Mon 4 Jul to 19:19 on Tue 5 Jul.", "fact": "2011-07-05T02:33:35Z → 2011-07-06T00:19:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 4th, 12:31–13:19 on the 5th.", "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 4th and 48 of 48 on the 5th.", "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 21612 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Chicago, 2011: Tuesday 5 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Skanda pancami (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-07-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-05", "confidence": "determinate" } ], "quote": "In Chicago, Skanda Pañcamī 2011 falls on Tuesday 5 July. Pañcamī runs from 21:34 on Mon 4 Jul to 19:19 on Tue 5 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4773, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2011-07-06T16:59:37-05:00", "utc": "2011-07-06T21:59:37Z", "ms": 1309989576838.7239 }, "end": { "local": "2011-07-07T14:38:56-05:00", "utc": "2011-07-07T19:38:56Z", "ms": 1310067536335.417 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-07-06T16:59:37-05:00", "utc": "2011-07-06T21:59:37Z", "ms": 1309989576838.7239 }, "end": { "local": "2011-07-07T14:38:56-05:00", "utc": "2011-07-07T19:38:56Z", "ms": 1310067536335.417 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-07-06", "window": { "start": { "local": "2011-07-06T12:31:14-05:00", "utc": "2011-07-06T17:31:14Z", "ms": 1309973473603.715 }, "end": { "local": "2011-07-06T13:19:14-05:00", "utc": "2011-07-06T18:19:14Z", "ms": 1309976353603.715 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-07-07", "window": { "start": { "local": "2011-07-07T12:31:23-05:00", "utc": "2011-07-07T17:31:23Z", "ms": 1310059882894.1846 }, "end": { "local": "2011-07-07T13:19:23-05:00", "utc": "2011-07-07T18:19:23Z", "ms": 1310062762894.1846 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 17:00 on Wed 6 Jul to 14:39 on Thu 7 Jul.", "fact": "2011-07-06T21:59:37Z → 2011-07-07T19:38:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 6th, 12:31–13:19 on the 7th.", "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 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: purvaviddha → only-day · margin 4773 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Chicago, 2011: Thursday 7 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vivasvat-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Vivasvat saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-07-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-07", "confidence": "determinate" } ], "quote": "In Chicago, Vivasvat Saptamī 2011 falls on Thursday 7 July. Saptamī runs from 17:00 on Wed 6 Jul to 14:39 on Thu 7 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-07-11", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2832, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-07-10T08:05:11-05:00", "utc": "2011-07-10T13:05:11Z", "ms": 1310303110606.074 }, "end": { "local": "2011-07-11T06:13:01-05:00", "utc": "2011-07-11T11:13:01Z", "ms": 1310382780584.3882 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-07-10T08:05:11-05:00", "utc": "2011-07-10T13:05:11Z", "ms": 1310303110606.074 }, "end": { "local": "2011-07-11T06:13:01-05:00", "utc": "2011-07-11T11:13:01Z", "ms": 1310382780584.3882 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-07-10", "window": { "start": { "local": "2011-07-10T05:25:05-05:00", "utc": "2011-07-10T10:25:05Z", "ms": 1310293505128.5376 }, "end": { "local": "2011-07-10T05:25:05-05:00", "utc": "2011-07-10T10:25:05Z", "ms": 1310293505128.5376 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-07-11", "window": { "start": { "local": "2011-07-11T05:25:49-05:00", "utc": "2011-07-11T10:25:49Z", "ms": 1310379948640.1868 }, "end": { "local": "2011-07-11T05:25:49-05:00", "utc": "2011-07-11T10:25:49Z", "ms": 1310379948640.1868 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:05 on Sun 10 Jul to 06:13 on Mon 11 Jul.", "fact": "2011-07-10T13:05:11Z → 2011-07-11T11:13:01Z" }, { "step": "kaala", "text": "Sunrise is at 05:25 on the 10th and 05:26 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 2832 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Chicago, 2011: Monday 11 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": "2011-07-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-11", "confidence": "determinate" } ], "quote": "In Chicago, Hariśayanī Ekādaśī 2011 falls on Monday 11 July. Ekādaśī runs from 08:05 on Sun 10 Jul to 06:13 on Mon 11 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-07-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-07-12", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20204, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-07-12T04:35:04-05:00", "utc": "2011-07-12T09:35:04Z", "ms": 1310463304436.1016 }, "end": { "local": "2011-07-13T03:14:31-05:00", "utc": "2011-07-13T08:14:31Z", "ms": 1310544870673.8318 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-07-12T04:35:04-05:00", "utc": "2011-07-12T09:35:04Z", "ms": 1310463304436.1016 }, "end": { "local": "2011-07-13T03:14:31-05:00", "utc": "2011-07-13T08:14:31Z", "ms": 1310544870673.8318 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-07-11", "window": { "start": { "local": "2011-07-11T20:26:03-05:00", "utc": "2011-07-12T01:26:03Z", "ms": 1310433963270.871 }, "end": { "local": "2011-07-11T21:38:07-05:00", "utc": "2011-07-12T02:38:07Z", "ms": 1310438287276.2627 } }, "covered_min": 0, "window_min": 72, "qualifies": false }, { "local_date": "2011-07-12", "window": { "start": { "local": "2011-07-12T20:25:33-05:00", "utc": "2011-07-13T01:25:33Z", "ms": 1310520332932.452 }, "end": { "local": "2011-07-12T21:37:47-05:00", "utc": "2011-07-13T02:37:47Z", "ms": 1310524667088.3306 } }, "covered_min": 72, "window_min": 72, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:35 on Tue 12 Jul to 03:15 on Wed 13 Jul.", "fact": "2011-07-12T09:35:04Z → 2011-07-13T08:14:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:26–21:38 on the 11th, 20:26–21:38 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 72 minutes on the 11th and 72 of 72 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 20204 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2011: Tuesday 12 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-07-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-12", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2011 falls on Tuesday 12 July. Trayodaśī runs from 04:35 on Tue 12 Jul to 03:15 on Wed 13 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-07-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11598, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-07-14T02:14:48-05:00", "utc": "2011-07-14T07:14:48Z", "ms": 1310627687800.5476 }, "end": { "local": "2011-07-15T01:39:37-05:00", "utc": "2011-07-15T06:39:37Z", "ms": 1310711976621.9087 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-07-14T02:14:48-05:00", "utc": "2011-07-14T07:14:48Z", "ms": 1310627687800.5476 }, "end": { "local": "2011-07-15T01:39:37-05:00", "utc": "2011-07-15T06:39:37Z", "ms": 1310711976621.9087 } }, "kaala": "udaya-3", "days": [ { "local_date": "2011-07-14", "window": { "start": { "local": "2011-07-14T05:28:06-05:00", "utc": "2011-07-14T10:28:06Z", "ms": 1310639285971.423 }, "end": { "local": "2011-07-14T08:27:22-05:00", "utc": "2011-07-14T13:27:22Z", "ms": 1310650042003.5315 } }, "covered_min": 179, "window_min": 179, "qualifies": true }, { "local_date": "2011-07-15", "window": { "start": { "local": "2011-07-15T05:28:54-05:00", "utc": "2011-07-15T10:28:54Z", "ms": 1310725733882.1606 }, "end": { "local": "2011-07-15T08:27:53-05:00", "utc": "2011-07-15T13:27:53Z", "ms": 1310736473047.4424 } }, "covered_min": 0, "window_min": 179, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 02:15 on Thu 14 Jul to 01:40 on Fri 15 Jul.", "fact": "2011-07-14T07:14:48Z → 2011-07-15T06:39:37Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:28–08:27 on the 14th, 05:29–08:28 on the 15th.", "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 179 of 179 minutes on the 14th and 0 of 179 on the 15th.", "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 11598 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Chicago, 2011: Thursday 14 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": "2011-07-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-14", "confidence": "determinate" } ], "quote": "In Chicago, Vyāsa Pūjā 2011 falls on Thursday 14 July. Pūrṇimā runs from 02:15 on Thu 14 Jul to 01:40 on Fri 15 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37048, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-07-14T02:14:48-05:00", "utc": "2011-07-14T07:14:48Z", "ms": 1310627687800.5476 }, "end": { "local": "2011-07-15T01:39:37-05:00", "utc": "2011-07-15T06:39:37Z", "ms": 1310711976621.9087 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-07-14T02:14:48-05:00", "utc": "2011-07-14T07:14:48Z", "ms": 1310627687800.5476 }, "end": { "local": "2011-07-15T01:39:37-05:00", "utc": "2011-07-15T06:39:37Z", "ms": 1310711976621.9087 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-07-14", "window": { "start": { "local": "2011-07-14T12:32:16-05:00", "utc": "2011-07-14T17:32:16Z", "ms": 1310664736051.694 }, "end": { "local": "2011-07-14T13:20:16-05:00", "utc": "2011-07-14T18:20:16Z", "ms": 1310667616051.694 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-07-15", "window": { "start": { "local": "2011-07-15T12:32:22-05:00", "utc": "2011-07-15T17:32:22Z", "ms": 1310751141795.3652 }, "end": { "local": "2011-07-15T13:20:22-05:00", "utc": "2011-07-15T18:20:22Z", "ms": 1310754021795.3652 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 02:15 on Thu 14 Jul to 01:40 on Fri 15 Jul.", "fact": "2011-07-14T07:14:48Z → 2011-07-15T06:39:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:32–13:20 on the 14th, 12:32–13:20 on the 15th.", "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 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37048 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Chicago, 2011: Thursday 14 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": "2011-07-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-14", "confidence": "determinate" } ], "quote": "In Chicago, Guru Pūrṇimā 2011 falls on Thursday 14 July. Pūrṇimā runs from 02:15 on Thu 14 Jul to 01:40 on Fri 15 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18910, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-07-14T02:14:48-05:00", "utc": "2011-07-14T07:14:48Z", "ms": 1310627687800.5476 }, "end": { "local": "2011-07-15T01:39:37-05:00", "utc": "2011-07-15T06:39:37Z", "ms": 1310711976621.9087 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-07-14T02:14:48-05:00", "utc": "2011-07-14T07:14:48Z", "ms": 1310627687800.5476 }, "end": { "local": "2011-07-15T01:39:37-05:00", "utc": "2011-07-15T06:39:37Z", "ms": 1310711976621.9087 } }, "kaala": "sayahna", "days": [ { "local_date": "2011-07-13", "window": { "start": { "local": "2011-07-13T17:25:28-05:00", "utc": "2011-07-13T22:25:28Z", "ms": 1310595928257.5378 }, "end": { "local": "2011-07-13T20:25:01-05:00", "utc": "2011-07-14T01:25:01Z", "ms": 1310606700546.5369 } }, "covered_min": 0, "window_min": 180, "qualifies": false }, { "local_date": "2011-07-14", "window": { "start": { "local": "2011-07-14T17:25:10-05:00", "utc": "2011-07-14T22:25:10Z", "ms": 1310682310099.8567 }, "end": { "local": "2011-07-14T20:24:26-05:00", "utc": "2011-07-15T01:24:26Z", "ms": 1310693066131.965 } }, "covered_min": 179, "window_min": 179, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 02:15 on Thu 14 Jul to 01:40 on Fri 15 Jul.", "fact": "2011-07-14T07:14:48Z → 2011-07-15T06:39:37Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 17:25–20:25 on the 13th, 17:25–20:24 on the 14th.", "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 180 minutes on the 13th and 179 of 179 on the 14th.", "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 18910 s" }, { "step": "ruling", "text": "Kokilā Vrata, Chicago, 2011: Thursday 14 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": "2011-07-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-14", "confidence": "determinate" } ], "quote": "In Chicago, Kokilā Vrata 2011 falls on Thursday 14 July. Pūrṇimā runs from 02:15 on Thu 14 Jul to 01:40 on Fri 15 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14555, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-07-14T02:14:48-05:00", "utc": "2011-07-14T07:14:48Z", "ms": 1310627687800.5476 }, "end": { "local": "2011-07-15T01:39:37-05:00", "utc": "2011-07-15T06:39:37Z", "ms": 1310711976621.9087 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2011-07-14T02:14:48-05:00", "utc": "2011-07-14T07:14:48Z", "ms": 1310627687800.5476 }, "end": { "local": "2011-07-15T01:39:37-05:00", "utc": "2011-07-15T06:39:37Z", "ms": 1310711976621.9087 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-07-13", "window": { "start": { "local": "2011-07-13T20:25:01-05:00", "utc": "2011-07-14T01:25:01Z", "ms": 1310606700546.5369 }, "end": { "local": "2011-07-13T21:37:25-05:00", "utc": "2011-07-14T02:37:25Z", "ms": 1310611045269.855 } }, "covered_min": 0, "window_min": 72, "qualifies": false }, { "local_date": "2011-07-14", "window": { "start": { "local": "2011-07-14T20:24:26-05:00", "utc": "2011-07-15T01:24:26Z", "ms": 1310693066131.965 }, "end": { "local": "2011-07-14T21:37:02-05:00", "utc": "2011-07-15T02:37:02Z", "ms": 1310697421831.9912 } }, "covered_min": 73, "window_min": 73, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 02:15 on Thu 14 Jul to 01:40 on Fri 15 Jul.", "fact": "2011-07-14T07:14:48Z → 2011-07-15T06:39:37Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:25–21:37 on the 13th, 20:24–21:37 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 0 of 72 minutes on the 13th and 73 of 73 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14555 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Chicago, 2011: Thursday 14 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": "2011-07-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-14", "confidence": "determinate" } ], "quote": "In Chicago, Śiva Śayanotsava 2011 falls on Thursday 14 July. Pūrṇimā runs from 02:15 on Thu 14 Jul to 01:40 on Fri 15 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17343, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2011-07-16T01:32:30-05:00", "utc": "2011-07-16T06:32:30Z", "ms": 1310797950005.2974 }, "end": { "local": "2011-07-17T01:56:19-05:00", "utc": "2011-07-17T06:56:19Z", "ms": 1310885779066.5217 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2011-07-16T01:32:30-05:00", "utc": "2011-07-16T06:32:30Z", "ms": 1310797950005.2974 }, "end": { "local": "2011-07-17T01:56:19-05:00", "utc": "2011-07-17T06:56:19Z", "ms": 1310885779066.5217 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-07-15", "window": { "start": { "local": "2011-07-15T20:36:38-05:00", "utc": "2011-07-16T01:36:38Z", "ms": 1310780198046.1675 }, "end": { "local": "2011-07-15T20:36:38-05:00", "utc": "2011-07-16T01:36:38Z", "ms": 1310780198046.1675 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-07-16", "window": { "start": { "local": "2011-07-16T21:07:16-05:00", "utc": "2011-07-17T02:07:16Z", "ms": 1310868435776.5818 }, "end": { "local": "2011-07-16T21:07:16-05:00", "utc": "2011-07-17T02:07:16Z", "ms": 1310868435776.5818 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 01:33 on Sat 16 Jul to 01:56 on Sun 17 Jul.", "fact": "2011-07-16T06:32:30Z → 2011-07-17T06:56:19Z" }, { "step": "kaala", "text": "Moonrise is at 20:37 on the 15th and 21:07 on the 16th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 15th and is on the 16th.", "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 17343 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Chicago, 2011: Saturday 16 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": "2011-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-16", "confidence": "determinate" } ], "quote": "In Chicago, Aśūnya Śayana Vrata (Āṣāḍha) 2011 falls on Saturday 16 July. Dvitīyā runs from 01:33 on Sat 16 Jul to 01:56 on Sun 17 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/sankashta-chaturthi?on=2011-07-18", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19097, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-07-18T02:52:27-05:00", "utc": "2011-07-18T07:52:27Z", "ms": 1310975547039.9917 }, "end": { "local": "2011-07-19T04:19:56-05:00", "utc": "2011-07-19T09:19:56Z", "ms": 1311067196194.0913 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2011-07-18T02:52:27-05:00", "utc": "2011-07-18T07:52:27Z", "ms": 1310975547039.9917 }, "end": { "local": "2011-07-19T04:19:56-05:00", "utc": "2011-07-19T09:19:56Z", "ms": 1311067196194.0913 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-07-17", "window": { "start": { "local": "2011-07-17T21:34:10-05:00", "utc": "2011-07-18T02:34:10Z", "ms": 1310956450296.8047 }, "end": { "local": "2011-07-17T21:34:10-05:00", "utc": "2011-07-18T02:34:10Z", "ms": 1310956450296.8047 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-07-18", "window": { "start": { "local": "2011-07-18T21:58:49-05:00", "utc": "2011-07-19T02:58:49Z", "ms": 1311044329112.5454 }, "end": { "local": "2011-07-18T21:58:49-05:00", "utc": "2011-07-19T02:58:49Z", "ms": 1311044329112.5454 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:52 on Mon 18 Jul to 04:20 on Tue 19 Jul.", "fact": "2011-07-18T07:52:27Z → 2011-07-19T09:19:56Z" }, { "step": "kaala", "text": "Moonrise is at 21:34 on the 17th and 21:59 on the 18th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 17th and is on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19097 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2011: Monday 18 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": "2011-07-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-18", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2011 falls on Monday 18 July. Caturthī runs from 02:52 on Mon 18 Jul to 04:20 on Tue 19 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/sankashta-chaturthi?on=2011-07-18", "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/2011/ekadashi?on=2011-07-26", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39581, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-07-25T16:37:23-05:00", "utc": "2011-07-25T21:37:23Z", "ms": 1311629842832.5508 }, "end": { "local": "2011-07-26T17:26:49-05:00", "utc": "2011-07-26T22:26:49Z", "ms": 1311719208585.773 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2011-07-25T16:37:23-05:00", "utc": "2011-07-25T21:37:23Z", "ms": 1311629842832.5508 }, "end": { "local": "2011-07-26T17:26:49-05:00", "utc": "2011-07-26T22:26:49Z", "ms": 1311719208585.773 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-07-25", "window": { "start": { "local": "2011-07-25T05:37:42-05:00", "utc": "2011-07-25T10:37:42Z", "ms": 1311590261718.555 }, "end": { "local": "2011-07-25T05:37:42-05:00", "utc": "2011-07-25T10:37:42Z", "ms": 1311590261718.555 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-07-26", "window": { "start": { "local": "2011-07-26T05:38:39-05:00", "utc": "2011-07-26T10:38:39Z", "ms": 1311676718508.8958 }, "end": { "local": "2011-07-26T05:38:39-05:00", "utc": "2011-07-26T10:38:39Z", "ms": 1311676718508.8958 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:37 on Mon 25 Jul to 17:27 on Tue 26 Jul.", "fact": "2011-07-25T21:37:23Z → 2011-07-26T22:26:49Z" }, { "step": "kaala", "text": "Sunrise is at 05:38 on the 25th and 05:39 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 39581 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Chicago, 2011: Tuesday 26 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": "2011-07-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-26", "confidence": "determinate" } ], "quote": "In Chicago, Kāmikā Ekādaśī 2011 falls on Tuesday 26 July. Ekādaśī runs from 16:37 on Mon 25 Jul to 17:27 on Tue 26 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-07-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-07-27", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9699, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-07-27T17:32:26-05:00", "utc": "2011-07-27T22:32:26Z", "ms": 1311805945553.9517 }, "end": { "local": "2011-07-28T16:53:53-05:00", "utc": "2011-07-28T21:53:53Z", "ms": 1311890032663.3293 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2011-07-27T17:32:26-05:00", "utc": "2011-07-27T22:32:26Z", "ms": 1311805945553.9517 }, "end": { "local": "2011-07-28T16:53:53-05:00", "utc": "2011-07-28T21:53:53Z", "ms": 1311890032663.3293 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-07-27", "window": { "start": { "local": "2011-07-27T20:14:04-05:00", "utc": "2011-07-28T01:14:04Z", "ms": 1311815644306.2524 }, "end": { "local": "2011-07-27T21:29:36-05:00", "utc": "2011-07-28T02:29:36Z", "ms": 1311820176233.0886 } }, "covered_min": 76, "window_min": 76, "qualifies": true }, { "local_date": "2011-07-28", "window": { "start": { "local": "2011-07-28T20:13:04-05:00", "utc": "2011-07-29T01:13:04Z", "ms": 1311901983938.172 }, "end": { "local": "2011-07-28T21:28:52-05:00", "utc": "2011-07-29T02:28:52Z", "ms": 1311906531697.8423 } }, "covered_min": 0, "window_min": 76, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:32 on Wed 27 Jul to 16:54 on Thu 28 Jul.", "fact": "2011-07-27T22:32:26Z → 2011-07-28T21:53:53Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:14–21:30 on the 27th, 20:13–21:29 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 76 of 76 minutes on the 27th and 0 of 76 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 9699 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2011: Wednesday 27 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": "2011-07-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-27", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2011 falls on Wednesday 27 July. Trayodaśī runs from 17:32 on Wed 27 Jul to 16:54 on Thu 28 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-07-27", "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/2011/shivaratri?on=2011-07-28", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-07-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27565, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-07-28T16:53:53-05:00", "utc": "2011-07-28T21:53:53Z", "ms": 1311890032663.3293 }, "end": { "local": "2011-07-29T15:34:23-05:00", "utc": "2011-07-29T20:34:23Z", "ms": 1311971662749.956 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2011-07-28T16:53:53-05:00", "utc": "2011-07-28T21:53:53Z", "ms": 1311890032663.3293 }, "end": { "local": "2011-07-29T15:34:23-05:00", "utc": "2011-07-29T20:34:23Z", "ms": 1311971662749.956 } }, "kaala": "nishita", "days": [ { "local_date": "2011-07-28", "window": { "start": { "local": "2011-07-29T00:33:18-05:00", "utc": "2011-07-29T05:33:18Z", "ms": 1311917598036.9355 }, "end": { "local": "2011-07-29T01:21:18-05:00", "utc": "2011-07-29T06:21:18Z", "ms": 1311920478036.9355 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-07-29", "window": { "start": { "local": "2011-07-30T00:33:16-05:00", "utc": "2011-07-30T05:33:16Z", "ms": 1312003996438.9077 }, "end": { "local": "2011-07-30T01:21:16-05:00", "utc": "2011-07-30T06:21:16Z", "ms": 1312006876438.9077 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 16:54 on Thu 28 Jul to 15:34 on Fri 29 Jul.", "fact": "2011-07-28T21:53:53Z → 2011-07-29T20:34:23Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:33–01:21 on the 28th, 00:33–01:21 on the 29th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 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. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27565 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2011: Thursday 28 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": "2011-07-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-07-28", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2011 falls on Thursday 28 July. Caturdaśī runs from 16:54 on Thu 28 Jul to 15:34 on Fri 29 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/shivaratri?on=2011-07-28", "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/2011/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14154, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2011-08-01T08:36:44-05:00", "utc": "2011-08-01T13:36:44Z", "ms": 1312205803695.0947 }, "end": { "local": "2011-08-02T05:45:25-05:00", "utc": "2011-08-02T10:45:25Z", "ms": 1312281925438.5781 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2011-08-01T08:36:44-05:00", "utc": "2011-08-01T13:36:44Z", "ms": 1312205803695.0947 }, "end": { "local": "2011-08-02T05:45:25-05:00", "utc": "2011-08-02T10:45:25Z", "ms": 1312281925438.5781 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-08-01", "window": { "start": { "local": "2011-08-01T12:32:38-05:00", "utc": "2011-08-01T17:32:38Z", "ms": 1312219957996.3267 }, "end": { "local": "2011-08-01T13:20:38-05:00", "utc": "2011-08-01T18:20:38Z", "ms": 1312222837996.3267 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-08-02", "window": { "start": { "local": "2011-08-02T12:32:34-05:00", "utc": "2011-08-02T17:32:34Z", "ms": 1312306353781.6074 }, "end": { "local": "2011-08-02T13:20:34-05:00", "utc": "2011-08-02T18:20:34Z", "ms": 1312309233781.6074 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 08:37 on Mon 1 Aug to 05:45 on Tue 2 Aug.", "fact": "2011-08-01T13:36:44Z → 2011-08-02T10:45:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:33–13:21 on the 1st, 12:33–13:21 on the 2nd.", "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 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 14154 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Chicago, 2011: Monday 1 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "madhusrava-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Madhusrava (Gujerat) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-08-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-01", "confidence": "determinate" } ], "quote": "In Chicago, Madhusravā Tṛtīyā (Hariyali Teej) 2011 falls on Monday 1 August. Tṛtīyā runs from 08:37 on Mon 1 Aug to 05:45 on Tue 2 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/vinayaka-chaturthi?on=2011-08-02", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24428, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-08-02T05:45:25-05:00", "utc": "2011-08-02T10:45:25Z", "ms": 1312281925438.5781 }, "end": { "local": "2011-08-03T02:52:12-05:00", "utc": "2011-08-03T07:52:12Z", "ms": 1312357931735.3982 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2011-08-02T05:45:25-05:00", "utc": "2011-08-02T10:45:25Z", "ms": 1312281925438.5781 }, "end": { "local": "2011-08-03T02:52:12-05:00", "utc": "2011-08-03T07:52:12Z", "ms": 1312357931735.3982 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-08-02", "window": { "start": { "local": "2011-08-02T12:32:34-05:00", "utc": "2011-08-02T17:32:34Z", "ms": 1312306353781.6074 }, "end": { "local": "2011-08-02T13:20:34-05:00", "utc": "2011-08-02T18:20:34Z", "ms": 1312309233781.6074 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-08-03", "window": { "start": { "local": "2011-08-03T12:32:29-05:00", "utc": "2011-08-03T17:32:29Z", "ms": 1312392748957.7573 }, "end": { "local": "2011-08-03T13:20:29-05:00", "utc": "2011-08-03T18:20:29Z", "ms": 1312395628957.7573 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:45 on Tue 2 Aug to 02:52 on Wed 3 Aug.", "fact": "2011-08-02T10:45:25Z → 2011-08-03T07:52:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:33–13:21 on the 2nd, 12:32–13:20 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24428 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2011: Tuesday 2 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-08-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-02", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2011 falls on Tuesday 2 August. Caturthī runs from 05:45 on Tue 2 Aug to 02:52 on Wed 3 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/vinayaka-chaturthi?on=2011-08-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34817, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2011-08-03T02:52:12-05:00", "utc": "2011-08-03T07:52:12Z", "ms": 1312357931735.3982 }, "end": { "local": "2011-08-04T00:04:35-05:00", "utc": "2011-08-04T05:04:35Z", "ms": 1312434275098.0125 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2011-08-03T02:52:12-05:00", "utc": "2011-08-03T07:52:12Z", "ms": 1312357931735.3982 }, "end": { "local": "2011-08-04T00:04:35-05:00", "utc": "2011-08-04T05:04:35Z", "ms": 1312434275098.0125 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-08-03", "window": { "start": { "local": "2011-08-03T12:32:29-05:00", "utc": "2011-08-03T17:32:29Z", "ms": 1312392748957.7573 }, "end": { "local": "2011-08-03T13:20:29-05:00", "utc": "2011-08-03T18:20:29Z", "ms": 1312395628957.7573 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-08-04", "window": { "start": { "local": "2011-08-04T12:32:24-05:00", "utc": "2011-08-04T17:32:24Z", "ms": 1312479143523.2642 }, "end": { "local": "2011-08-04T13:20:24-05:00", "utc": "2011-08-04T18:20:24Z", "ms": 1312482023523.2642 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 02:52 on Wed 3 Aug to 00:05 on Thu 4 Aug.", "fact": "2011-08-03T07:52:12Z → 2011-08-04T05:04:35Z" }, { "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": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34817 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Chicago, 2011: Wednesday 3 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-08-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-03", "confidence": "determinate" } ], "quote": "In Chicago, Nāga Pañcamī 2011 falls on Wednesday 3 August. Pañcamī runs from 02:52 on Wed 3 Aug to 00:05 on Thu 4 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-08-09", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27523, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-08-08T14:21:58-05:00", "utc": "2011-08-08T19:21:58Z", "ms": 1312831318208.7844 }, "end": { "local": "2011-08-09T13:31:19-05:00", "utc": "2011-08-09T18:31:19Z", "ms": 1312914679445.2332 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2011-08-08T14:21:58-05:00", "utc": "2011-08-08T19:21:58Z", "ms": 1312831318208.7844 }, "end": { "local": "2011-08-09T13:31:19-05:00", "utc": "2011-08-09T18:31:19Z", "ms": 1312914679445.2332 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-08-08", "window": { "start": { "local": "2011-08-08T05:51:35-05:00", "utc": "2011-08-08T10:51:35Z", "ms": 1312800694654.6375 }, "end": { "local": "2011-08-08T05:51:35-05:00", "utc": "2011-08-08T10:51:35Z", "ms": 1312800694654.6375 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-08-09", "window": { "start": { "local": "2011-08-09T05:52:36-05:00", "utc": "2011-08-09T10:52:36Z", "ms": 1312887156094.732 }, "end": { "local": "2011-08-09T05:52:36-05:00", "utc": "2011-08-09T10:52:36Z", "ms": 1312887156094.732 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:22 on Mon 8 Aug to 13:31 on Tue 9 Aug.", "fact": "2011-08-08T19:21:58Z → 2011-08-09T18:31:19Z" }, { "step": "kaala", "text": "Sunrise is at 05:52 on the 8th and 05:53 on the 9th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 8th and is on the 9th.", "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 27523 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Chicago, 2011: Tuesday 9 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-08-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-09", "confidence": "determinate" } ], "quote": "In Chicago, Putradā Ekādaśī 2011 falls on Tuesday 9 August. Ekādaśī runs from 14:22 on Mon 8 Aug to 13:31 on Tue 9 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-08-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 692, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2011-08-09T13:31:19-05:00", "utc": "2011-08-09T18:31:19Z", "ms": 1312914679445.2332 }, "end": { "local": "2011-08-10T13:03:17-05:00", "utc": "2011-08-10T18:03:17Z", "ms": 1312999397004.8438 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2011-08-09T13:31:19-05:00", "utc": "2011-08-09T18:31:19Z", "ms": 1312914679445.2332 }, "end": { "local": "2011-08-10T13:03:17-05:00", "utc": "2011-08-10T18:03:17Z", "ms": 1312999397004.8438 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-08-09", "window": { "start": { "local": "2011-08-09T12:31:47-05:00", "utc": "2011-08-09T17:31:47Z", "ms": 1312911107264.813 }, "end": { "local": "2011-08-09T13:19:47-05:00", "utc": "2011-08-09T18:19:47Z", "ms": 1312913987264.813 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-08-10", "window": { "start": { "local": "2011-08-10T12:31:38-05:00", "utc": "2011-08-10T17:31:38Z", "ms": 1312997498233.6907 }, "end": { "local": "2011-08-10T13:19:38-05:00", "utc": "2011-08-10T18:19:38Z", "ms": 1313000378233.6907 } }, "covered_min": 32, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 13:31 on Tue 9 Aug to 13:03 on Wed 10 Aug.", "fact": "2011-08-09T18:31:19Z → 2011-08-10T18:03:17Z" }, { "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": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 32 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: purvaviddha → only-day · margin 692 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Chicago, 2011: Wednesday 10 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "damodara-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Buddha dvadasi, Damodara dvadasi (purvaviddha), Visnu-pavitraropana." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-08-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-09", "confidence": "determinate" } ], "quote": "In Chicago, Dāmodara Dvādaśī 2011 falls on Wednesday 10 August. Dvādaśī runs from 13:31 on Tue 9 Aug to 13:03 on Wed 10 Aug and covers 32 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/pradosha-vrata?on=2011-08-10", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24862, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-08-10T13:03:17-05:00", "utc": "2011-08-10T18:03:17Z", "ms": 1312999397004.8438 }, "end": { "local": "2011-08-11T12:57:53-05:00", "utc": "2011-08-11T17:57:53Z", "ms": 1313085473096.1235 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2011-08-10T13:03:17-05:00", "utc": "2011-08-10T18:03:17Z", "ms": 1312999397004.8438 }, "end": { "local": "2011-08-11T12:57:53-05:00", "utc": "2011-08-11T17:57:53Z", "ms": 1313085473096.1235 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-08-10", "window": { "start": { "local": "2011-08-10T19:57:39-05:00", "utc": "2011-08-11T00:57:39Z", "ms": 1313024258810.794 }, "end": { "local": "2011-08-10T21:17:15-05:00", "utc": "2011-08-11T02:17:15Z", "ms": 1313029034879.2605 } }, "covered_min": 80, "window_min": 80, "qualifies": true }, { "local_date": "2011-08-11", "window": { "start": { "local": "2011-08-11T19:56:18-05:00", "utc": "2011-08-12T00:56:18Z", "ms": 1313110577932.6646 }, "end": { "local": "2011-08-11T21:16:13-05:00", "utc": "2011-08-12T02:16:13Z", "ms": 1313115373019.4924 } }, "covered_min": 0, "window_min": 80, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:03 on Wed 10 Aug to 12:58 on Thu 11 Aug.", "fact": "2011-08-10T18:03:17Z → 2011-08-11T17:57:53Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:58–21:17 on the 10th, 19:56–21:16 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 80 of 80 minutes on the 10th and 0 of 80 on the 11th.", "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 24862 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2011: Wednesday 10 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": "2011-08-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-10", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2011 falls on Wednesday 10 August. Trayodaśī runs from 13:03 on Wed 10 Aug to 12:58 on Thu 11 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-08-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-13", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 15793, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-08-12T13:15:39-05:00", "utc": "2011-08-12T18:15:39Z", "ms": 1313172939091.3936 }, "end": { "local": "2011-08-13T13:57:30-05:00", "utc": "2011-08-13T18:57:30Z", "ms": 1313261850495.7346 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "2011-08-13T01:33:30-05:00", "utc": "2011-08-13T06:33:30Z", "ms": 1313217210273.8271 }, "end": { "local": "2011-08-13T13:57:30-05:00", "utc": "2011-08-13T18:57:30Z", "ms": 1313261850495.7346 } }, "kaala": "day", "days": [ { "local_date": "2011-08-12", "window": { "start": { "local": "2011-08-12T05:55:41-05:00", "utc": "2011-08-12T10:55:41Z", "ms": 1313146541083.8728 }, "end": { "local": "2011-08-13T05:56:43-05:00", "utc": "2011-08-13T10:56:43Z", "ms": 1313233002922.9993 } }, "covered_min": 263, "window_min": 1441, "qualifies": true }, { "local_date": "2011-08-13", "window": { "start": { "local": "2011-08-13T05:56:43-05:00", "utc": "2011-08-13T10:56:43Z", "ms": 1313233002922.9993 }, "end": { "local": "2011-08-14T05:57:45-05:00", "utc": "2011-08-14T10:57:45Z", "ms": 1313319464830.6921 } }, "covered_min": 481, "window_min": 1441, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 13:16 on Fri 12 Aug to 13:58 on Sat 13 Aug. Its second half begins at 01:34 on Sat 13 Aug.", "fact": "2011-08-12T18:15:39Z → 2011-08-13T18:57:30Z · second half from 2011-08-13T06:33:30Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:56 on the 12th, and from 05:57 on the 13th.", "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 263 of 1441 minutes on the 12th and 481 of 1441 on the 13th.", "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 15793 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Chicago, 2011: Saturday 13 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": "2011-08-13", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-13", "confidence": "boundary" } ], "quote": "In Chicago, Rakṣā Bandhana (Rakhi) 2011 falls on Saturday 13 August. The second half of Pūrṇimā runs from 01:34 on Sat 13 Aug to 13:58 on Sat 13 Aug and falls on two days: 481 minutes of it on the 13th, 263 on the 12th; 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/2011/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/2011/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-13", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 219, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-08-12T13:15:39-05:00", "utc": "2011-08-12T18:15:39Z", "ms": 1313172939091.3936 }, "end": { "local": "2011-08-13T13:57:30-05:00", "utc": "2011-08-13T18:57:30Z", "ms": 1313261850495.7346 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2011-08-12T13:15:39-05:00", "utc": "2011-08-12T18:15:39Z", "ms": 1313172939091.3936 }, "end": { "local": "2011-08-13T13:57:30-05:00", "utc": "2011-08-13T18:57:30Z", "ms": 1313261850495.7346 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-08-12", "window": { "start": { "local": "2011-08-12T12:31:18-05:00", "utc": "2011-08-12T17:31:18Z", "ms": 1313170278459.5327 }, "end": { "local": "2011-08-12T13:19:18-05:00", "utc": "2011-08-12T18:19:18Z", "ms": 1313173158459.5327 } }, "covered_min": 4, "window_min": 48, "qualifies": true }, { "local_date": "2011-08-13", "window": { "start": { "local": "2011-08-13T12:31:08-05:00", "utc": "2011-08-13T17:31:08Z", "ms": 1313256667737.999 }, "end": { "local": "2011-08-13T13:19:08-05:00", "utc": "2011-08-13T18:19:08Z", "ms": 1313259547737.999 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 13:16 on Fri 12 Aug to 13:58 on Sat 13 Aug.", "fact": "2011-08-12T18:15:39Z → 2011-08-13T18:57:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 12th, 12:31–13:19 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 4 of 48 minutes on the 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "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 219 s < 300 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Chicago, 2011: Saturday 13 August.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "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": "2011-08-13", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-13", "confidence": "boundary" } ], "quote": "In Chicago, Ṛṣi Tarpaṇa 2011 falls on Saturday 13 August. Pūrṇimā runs from 13:16 on Fri 12 Aug to 13:58 on Sat 13 Aug and covers all of madhyāhna that midday. It also reaches the previous midday for 4 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 3 min 39 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13787, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2011-08-14T15:04:21-05:00", "utc": "2011-08-14T20:04:21Z", "ms": 1313352261089.5325 }, "end": { "local": "2011-08-15T16:36:18-05:00", "utc": "2011-08-15T21:36:18Z", "ms": 1313444178338.6472 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-14T15:04:21-05:00", "utc": "2011-08-14T20:04:21Z", "ms": 1313352261089.5325 }, "end": { "local": "2011-08-15T16:36:18-05:00", "utc": "2011-08-15T21:36:18Z", "ms": 1313444178338.6472 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-08-14", "window": { "start": { "local": "2011-08-14T20:01:59-05:00", "utc": "2011-08-15T01:01:59Z", "ms": 1313370119191.9258 }, "end": { "local": "2011-08-14T20:01:59-05:00", "utc": "2011-08-15T01:01:59Z", "ms": 1313370119191.9258 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-08-15", "window": { "start": { "local": "2011-08-15T20:26:05-05:00", "utc": "2011-08-16T01:26:05Z", "ms": 1313457965460.216 }, "end": { "local": "2011-08-15T20:26:05-05:00", "utc": "2011-08-16T01:26:05Z", "ms": 1313457965460.216 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 15:04 on Sun 14 Aug to 16:36 on Mon 15 Aug.", "fact": "2011-08-14T20:04:21Z → 2011-08-15T21:36:18Z" }, { "step": "kaala", "text": "Moonrise is at 20:02 on the 14th and 20:26 on the 15th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 14th and is not on the 15th.", "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 13787 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Chicago, 2011: Sunday 14 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": "2011-08-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-14", "confidence": "determinate" } ], "quote": "In Chicago, Aśūnya Śayana Vrata 2011 falls on Sunday 14 August. Dvitīyā runs from 15:04 on Sun 14 Aug to 16:36 on Mon 15 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11854, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2011-08-15T16:36:18-05:00", "utc": "2011-08-15T21:36:18Z", "ms": 1313444178338.6472 }, "end": { "local": "2011-08-16T18:31:47-05:00", "utc": "2011-08-16T23:31:47Z", "ms": 1313537506700.096 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-15T16:36:18-05:00", "utc": "2011-08-15T21:36:18Z", "ms": 1313444178338.6472 }, "end": { "local": "2011-08-16T18:31:47-05:00", "utc": "2011-08-16T23:31:47Z", "ms": 1313537506700.096 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-08-15", "window": { "start": { "local": "2011-08-15T12:30:45-05:00", "utc": "2011-08-15T17:30:45Z", "ms": 1313429444684.7412 }, "end": { "local": "2011-08-15T13:18:45-05:00", "utc": "2011-08-15T18:18:45Z", "ms": 1313432324684.7412 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-08-16", "window": { "start": { "local": "2011-08-16T12:30:32-05:00", "utc": "2011-08-16T17:30:32Z", "ms": 1313515832377.851 }, "end": { "local": "2011-08-16T13:18:32-05:00", "utc": "2011-08-16T18:18:32Z", "ms": 1313518712377.851 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 16:36 on Mon 15 Aug to 18:32 on Tue 16 Aug.", "fact": "2011-08-15T21:36:18Z → 2011-08-16T23:31:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:31–13:19 on the 15th, 12:31–13:19 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 11854 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Chicago, 2011: Tuesday 16 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": "2011-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-16", "confidence": "determinate" } ], "quote": "In Chicago, Kajjalī Tṛtīyā (Kajari Teej) 2011 falls on Tuesday 16 August. Tṛtīyā runs from 16:36 on Mon 15 Aug to 18:32 on Tue 16 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3523, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-08-16T18:31:47-05:00", "utc": "2011-08-16T23:31:47Z", "ms": 1313537506700.096 }, "end": { "local": "2011-08-17T20:46:31-05:00", "utc": "2011-08-18T01:46:31Z", "ms": 1313631991150.868 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-16T18:31:47-05:00", "utc": "2011-08-16T23:31:47Z", "ms": 1313537506700.096 }, "end": { "local": "2011-08-17T20:46:31-05:00", "utc": "2011-08-18T01:46:31Z", "ms": 1313631991150.868 } }, "kaala": "sayahna", "days": [ { "local_date": "2011-08-16", "window": { "start": { "local": "2011-08-16T17:03:23-05:00", "utc": "2011-08-16T22:03:23Z", "ms": 1313532202516.847 }, "end": { "local": "2011-08-16T19:49:16-05:00", "utc": "2011-08-17T00:49:16Z", "ms": 1313542155942.844 } }, "covered_min": 77, "window_min": 166, "qualifies": true }, { "local_date": "2011-08-17", "window": { "start": { "local": "2011-08-17T17:02:25-05:00", "utc": "2011-08-17T22:02:25Z", "ms": 1313618544786.6675 }, "end": { "local": "2011-08-17T19:47:48-05:00", "utc": "2011-08-18T00:47:48Z", "ms": 1313628468265.9092 } }, "covered_min": 165, "window_min": 165, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:32 on Tue 16 Aug to 20:47 on Wed 17 Aug.", "fact": "2011-08-16T23:31:47Z → 2011-08-18T01:46:31Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 17:03–19:49 on the 16th, 17:02–19:48 on the 17th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 77 of 166 minutes on the 16th and 165 of 165 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both late afternoons qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 3523 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Chicago, 2011: Tuesday 16 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": "2011-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-16", "confidence": "determinate" } ], "quote": "In Chicago, Bahulā Caturthī 2011 falls on Tuesday 16 August. Caturthī runs from 18:32 on Tue 16 Aug to 20:47 on Wed 17 Aug and covers 77 of 166 minutes of sāyāhna that late afternoon. It also reaches the next late afternoon for 165 minutes; by the rule the first late afternoon is taken.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/sankashta-chaturthi?on=2011-08-16", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1678, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-08-16T18:31:47-05:00", "utc": "2011-08-16T23:31:47Z", "ms": 1313537506700.096 }, "end": { "local": "2011-08-17T20:46:31-05:00", "utc": "2011-08-18T01:46:31Z", "ms": 1313631991150.868 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-16T18:31:47-05:00", "utc": "2011-08-16T23:31:47Z", "ms": 1313537506700.096 }, "end": { "local": "2011-08-17T20:46:31-05:00", "utc": "2011-08-18T01:46:31Z", "ms": 1313631991150.868 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-08-16", "window": { "start": { "local": "2011-08-16T20:49:54-05:00", "utc": "2011-08-17T01:49:54Z", "ms": 1313545794156.6821 }, "end": { "local": "2011-08-16T20:49:54-05:00", "utc": "2011-08-17T01:49:54Z", "ms": 1313545794156.6821 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-08-17", "window": { "start": { "local": "2011-08-17T21:14:29-05:00", "utc": "2011-08-18T02:14:29Z", "ms": 1313633669184.1526 }, "end": { "local": "2011-08-17T21:14:29-05:00", "utc": "2011-08-18T02:14:29Z", "ms": 1313633669184.1526 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:32 on Tue 16 Aug to 20:47 on Wed 17 Aug.", "fact": "2011-08-16T23:31:47Z → 2011-08-18T01:46:31Z" }, { "step": "kaala", "text": "Moonrise is at 20:50 on the 16th and 21:14 on the 17th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 16th and is not on the 17th.", "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 1678 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2011: Tuesday 16 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": "2011-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-16", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2011 falls on Tuesday 16 August. Caturthī runs from 18:32 on Tue 16 Aug to 20:47 on Wed 17 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/sankashta-chaturthi?on=2011-08-16", "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/2011/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35693, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2011-08-18T23:12:59-05:00", "utc": "2011-08-19T04:12:59Z", "ms": 1313727179439.9614 }, "end": { "local": "2011-08-20T01:40:24-05:00", "utc": "2011-08-20T06:40:24Z", "ms": 1313822424374.936 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-18T23:12:59-05:00", "utc": "2011-08-19T04:12:59Z", "ms": 1313727179439.9614 }, "end": { "local": "2011-08-20T01:40:24-05:00", "utc": "2011-08-20T06:40:24Z", "ms": 1313822424374.936 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-08-18", "window": { "start": { "local": "2011-08-18T12:30:06-05:00", "utc": "2011-08-18T17:30:06Z", "ms": 1313688606267.5957 }, "end": { "local": "2011-08-18T13:18:06-05:00", "utc": "2011-08-18T18:18:06Z", "ms": 1313691486267.5957 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-08-19", "window": { "start": { "local": "2011-08-19T12:29:52-05:00", "utc": "2011-08-19T17:29:52Z", "ms": 1313774992490.3447 }, "end": { "local": "2011-08-19T13:17:52-05:00", "utc": "2011-08-19T18:17:52Z", "ms": 1313777872490.3447 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 23:13 on Thu 18 Aug to 01:40 on Sat 20 Aug.", "fact": "2011-08-19T04:12:59Z → 2011-08-20T06:40:24Z" }, { "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": "Ṣaṣṭhī 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: paraviddha → only-day · margin 35693 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Chicago, 2011: Friday 19 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": "2011-08-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-19", "confidence": "determinate" } ], "quote": "In Chicago, Hala Ṣaṣṭhī 2011 falls on Friday 19 August. Ṣaṣṭhī runs from 23:13 on Thu 18 Aug to 01:40 on Sat 20 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30823, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "2011-08-20T01:40:24-05:00", "utc": "2011-08-20T06:40:24Z", "ms": 1313822424374.936 }, "end": { "local": "2011-08-21T03:55:41-05:00", "utc": "2011-08-21T08:55:41Z", "ms": 1313916940759.1028 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-20T01:40:24-05:00", "utc": "2011-08-20T06:40:24Z", "ms": 1313822424374.936 }, "end": { "local": "2011-08-21T03:55:41-05:00", "utc": "2011-08-21T08:55:41Z", "ms": 1313916940759.1028 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-08-20", "window": { "start": { "local": "2011-08-20T12:29:38-05:00", "utc": "2011-08-20T17:29:38Z", "ms": 1313861378249.2737 }, "end": { "local": "2011-08-20T13:17:38-05:00", "utc": "2011-08-20T18:17:38Z", "ms": 1313864258249.2737 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-08-21", "window": { "start": { "local": "2011-08-21T12:29:24-05:00", "utc": "2011-08-21T17:29:24Z", "ms": 1313947763557.6685 }, "end": { "local": "2011-08-21T13:17:24-05:00", "utc": "2011-08-21T18:17:24Z", "ms": 1313950643557.6685 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 01:40 on Sat 20 Aug to 03:56 on Sun 21 Aug.", "fact": "2011-08-20T06:40:24Z → 2011-08-21T08:55:41Z" }, { "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": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 20th and 0 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30823 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Chicago, 2011: Saturday 20 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": "2011-08-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-20", "confidence": "determinate" } ], "quote": "In Chicago, Śītalā Saptamī 2011 falls on Saturday 20 August. Saptamī runs from 01:40 on Sat 20 Aug to 03:56 on Sun 21 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9451, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2011-08-21T03:55:41-05:00", "utc": "2011-08-21T08:55:41Z", "ms": 1313916940759.1028 }, "end": { "local": "2011-08-22T05:45:13-05:00", "utc": "2011-08-22T10:45:13Z", "ms": 1314009912589.3882 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-21T03:55:41-05:00", "utc": "2011-08-21T08:55:41Z", "ms": 1313916940759.1028 }, "end": { "local": "2011-08-22T05:45:13-05:00", "utc": "2011-08-22T10:45:13Z", "ms": 1314009912589.3882 } }, "kaala": "nishita", "days": [ { "local_date": "2011-08-20", "window": { "start": { "local": "2011-08-21T00:30:09-05:00", "utc": "2011-08-21T05:30:09Z", "ms": 1313904609321.9678 }, "end": { "local": "2011-08-21T01:18:09-05:00", "utc": "2011-08-21T06:18:09Z", "ms": 1313907489321.9678 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-08-21", "window": { "start": { "local": "2011-08-22T00:29:55-05:00", "utc": "2011-08-22T05:29:55Z", "ms": 1313990994632.9836 }, "end": { "local": "2011-08-22T01:17:55-05:00", "utc": "2011-08-22T06:17:55Z", "ms": 1313993874632.9836 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 03:56 on Sun 21 Aug to 05:45 on Mon 22 Aug.", "fact": "2011-08-21T08:55:41Z → 2011-08-22T10:45:13Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:30–01:18 on the 20th, 00:30–01:18 on the 21st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during niśītha. It covers 0 of 48 minutes on the 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 night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9451 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Chicago, 2011: Sunday 21 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": "2011-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-21", "confidence": "determinate" } ], "quote": "In Chicago, Janmāṣṭamī 2011 falls on Sunday 21 August. Aṣṭamī runs from 03:56 on Sun 21 Aug to 05:45 on Mon 22 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-08-25", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2946, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-08-24T07:22:42-05:00", "utc": "2011-08-24T12:22:42Z", "ms": 1314188561993.3174 }, "end": { "local": "2011-08-25T06:58:14-05:00", "utc": "2011-08-25T11:58:14Z", "ms": 1314273493777.4517 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-24T07:22:42-05:00", "utc": "2011-08-24T12:22:42Z", "ms": 1314188561993.3174 }, "end": { "local": "2011-08-25T06:58:14-05:00", "utc": "2011-08-25T11:58:14Z", "ms": 1314273493777.4517 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-08-24", "window": { "start": { "local": "2011-08-24T06:08:06-05:00", "utc": "2011-08-24T11:08:06Z", "ms": 1314184085797.0369 }, "end": { "local": "2011-08-24T06:08:06-05:00", "utc": "2011-08-24T11:08:06Z", "ms": 1314184085797.0369 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-08-25", "window": { "start": { "local": "2011-08-25T06:09:08-05:00", "utc": "2011-08-25T11:09:08Z", "ms": 1314270547926.5269 }, "end": { "local": "2011-08-25T06:09:08-05:00", "utc": "2011-08-25T11:09:08Z", "ms": 1314270547926.5269 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:23 on Wed 24 Aug to 06:58 on Thu 25 Aug.", "fact": "2011-08-24T12:22:42Z → 2011-08-25T11:58:14Z" }, { "step": "kaala", "text": "Sunrise is at 06:08 on the 24th and 06:09 on the 25th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 24th and is on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2946 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Chicago, 2011: Thursday 25 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": "2011-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-25", "confidence": "determinate" } ], "quote": "In Chicago, Ajā Ekādaśī 2011 falls on Thursday 25 August. Ekādaśī runs from 07:23 on Wed 24 Aug to 06:58 on Thu 25 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-08-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-08-26", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24380, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-08-26T05:44:14-05:00", "utc": "2011-08-26T10:44:14Z", "ms": 1314355454376.1267 }, "end": { "local": "2011-08-27T03:45:16-05:00", "utc": "2011-08-27T08:45:16Z", "ms": 1314434715712.7036 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-26T05:44:14-05:00", "utc": "2011-08-26T10:44:14Z", "ms": 1314355454376.1267 }, "end": { "local": "2011-08-27T03:45:16-05:00", "utc": "2011-08-27T08:45:16Z", "ms": 1314434715712.7036 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-08-25", "window": { "start": { "local": "2011-08-25T19:35:33-05:00", "utc": "2011-08-26T00:35:33Z", "ms": 1314318933173.8992 }, "end": { "local": "2011-08-25T21:00:10-05:00", "utc": "2011-08-26T02:00:10Z", "ms": 1314324010088.9104 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "2011-08-26", "window": { "start": { "local": "2011-08-26T19:33:58-05:00", "utc": "2011-08-27T00:33:58Z", "ms": 1314405237567.9756 }, "end": { "local": "2011-08-26T20:58:56-05:00", "utc": "2011-08-27T01:58:56Z", "ms": 1314410335508.289 } }, "covered_min": 85, "window_min": 85, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:44 on Fri 26 Aug to 03:45 on Sat 27 Aug.", "fact": "2011-08-26T10:44:14Z → 2011-08-27T08:45:16Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:36–21:00 on the 25th, 19:34–20:59 on the 26th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 85 minutes on the 25th and 85 of 85 on the 26th.", "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 24380 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2011: Friday 26 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": "2011-08-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-26", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2011 falls on Friday 26 August. Trayodaśī runs from 05:44 on Fri 26 Aug to 03:45 on Sat 27 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-08-26", "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/2011/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15065, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-08-27T03:45:16-05:00", "utc": "2011-08-27T08:45:16Z", "ms": 1314434715712.7036 }, "end": { "local": "2011-08-28T01:08:45-05:00", "utc": "2011-08-28T06:08:45Z", "ms": 1314511725474.885 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-27T03:45:16-05:00", "utc": "2011-08-27T08:45:16Z", "ms": 1314434715712.7036 }, "end": { "local": "2011-08-28T01:08:45-05:00", "utc": "2011-08-28T06:08:45Z", "ms": 1314511725474.885 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-08-26", "window": { "start": { "local": "2011-08-26T19:33:58-05:00", "utc": "2011-08-27T00:33:58Z", "ms": 1314405237567.9756 }, "end": { "local": "2011-08-26T20:58:56-05:00", "utc": "2011-08-27T01:58:56Z", "ms": 1314410335508.289 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "2011-08-27", "window": { "start": { "local": "2011-08-27T19:32:21-05:00", "utc": "2011-08-28T00:32:21Z", "ms": 1314491541239.4697 }, "end": { "local": "2011-08-27T20:57:40-05:00", "utc": "2011-08-28T01:57:40Z", "ms": 1314496660297.0576 } }, "covered_min": 85, "window_min": 85, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 03:45 on Sat 27 Aug to 01:09 on Sun 28 Aug.", "fact": "2011-08-27T08:45:16Z → 2011-08-28T06:08:45Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:34–20:59 on the 26th, 19:32–20:58 on the 27th.", "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 85 minutes on the 26th and 85 of 85 on the 27th.", "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 15065 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Chicago, 2011: Saturday 27 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": "2011-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-27", "confidence": "determinate" } ], "quote": "In Chicago, Aghora Caturdaśī 2011 falls on Saturday 27 August. Caturdaśī runs from 03:45 on Sat 27 Aug to 01:09 on Sun 28 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/shivaratri?on=2011-08-27", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 452, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-08-27T03:45:16-05:00", "utc": "2011-08-27T08:45:16Z", "ms": 1314434715712.7036 }, "end": { "local": "2011-08-28T01:08:45-05:00", "utc": "2011-08-28T06:08:45Z", "ms": 1314511725474.885 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-27T03:45:16-05:00", "utc": "2011-08-27T08:45:16Z", "ms": 1314434715712.7036 }, "end": { "local": "2011-08-28T01:08:45-05:00", "utc": "2011-08-28T06:08:45Z", "ms": 1314511725474.885 } }, "kaala": "nishita", "days": [ { "local_date": "2011-08-26", "window": { "start": { "local": "2011-08-27T00:28:35-05:00", "utc": "2011-08-27T05:28:35Z", "ms": 1314422914844.151 }, "end": { "local": "2011-08-27T01:16:35-05:00", "utc": "2011-08-27T06:16:35Z", "ms": 1314425794844.151 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-08-27", "window": { "start": { "local": "2011-08-28T00:28:18-05:00", "utc": "2011-08-28T05:28:18Z", "ms": 1314509297705.4238 }, "end": { "local": "2011-08-28T01:16:18-05:00", "utc": "2011-08-28T06:16:18Z", "ms": 1314512177705.4238 } }, "covered_min": 40, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 03:45 on Sat 27 Aug to 01:09 on Sun 28 Aug.", "fact": "2011-08-27T08:45:16Z → 2011-08-28T06:08:45Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:29–01:17 on the 26th, 00:28–01:16 on the 27th.", "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 26th and 40 of 48 on the 27th.", "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 452 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2011: Saturday 27 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": "2011-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-27", "confidence": "boundary" } ], "quote": "In Chicago, Śivarātri 2011 falls on Saturday 27 August. Caturdaśī runs from 03:45 on Sat 27 Aug to 01:09 on Sun 28 Aug and covers 40 of 48 minutes of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/shivaratri?on=2011-08-27", "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/2011/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19588, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2011-08-28T22:04:06-05:00", "utc": "2011-08-29T03:04:06Z", "ms": 1314587045722.4255 }, "end": { "local": "2011-08-29T18:41:39-05:00", "utc": "2011-08-29T23:41:39Z", "ms": 1314661299447.6702 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-28T22:04:06-05:00", "utc": "2011-08-29T03:04:06Z", "ms": 1314587045722.4255 }, "end": { "local": "2011-08-29T18:41:39-05:00", "utc": "2011-08-29T23:41:39Z", "ms": 1314661299447.6702 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-08-28", "window": { "start": { "local": "2011-08-28T12:27:29-05:00", "utc": "2011-08-28T17:27:29Z", "ms": 1314552449194.2822 }, "end": { "local": "2011-08-28T13:15:29-05:00", "utc": "2011-08-28T18:15:29Z", "ms": 1314555329194.2822 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-08-29", "window": { "start": { "local": "2011-08-29T12:27:11-05:00", "utc": "2011-08-29T17:27:11Z", "ms": 1314638831356.0818 }, "end": { "local": "2011-08-29T13:15:11-05:00", "utc": "2011-08-29T18:15:11Z", "ms": 1314641711356.0818 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 22:04 on Sun 28 Aug to 18:42 on Mon 29 Aug.", "fact": "2011-08-29T03:04:06Z → 2011-08-29T23:41:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 28th, 12:27–13:15 on the 29th.", "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 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 19588 s" }, { "step": "ruling", "text": "Rudra Vrata, Chicago, 2011: Monday 29 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": "2011-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-29", "confidence": "determinate" } ], "quote": "In Chicago, Rudra Vrata 2011 falls on Monday 29 August. Pratipadā runs from 22:04 on Sun 28 Aug to 18:42 on Mon 29 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2443, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-08-31T11:45:52-05:00", "utc": "2011-08-31T16:45:52Z", "ms": 1314809151992.4731 }, "end": { "local": "2011-09-01T08:32:28-05:00", "utc": "2011-09-01T13:32:28Z", "ms": 1314883947661.0762 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-31T11:45:52-05:00", "utc": "2011-08-31T16:45:52Z", "ms": 1314809151992.4731 }, "end": { "local": "2011-09-01T08:32:28-05:00", "utc": "2011-09-01T13:32:28Z", "ms": 1314883947661.0762 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-08-31", "window": { "start": { "local": "2011-08-31T12:26:35-05:00", "utc": "2011-08-31T17:26:35Z", "ms": 1314811594665.2634 }, "end": { "local": "2011-08-31T13:14:35-05:00", "utc": "2011-08-31T18:14:35Z", "ms": 1314814474665.2634 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-09-01", "window": { "start": { "local": "2011-09-01T12:26:16-05:00", "utc": "2011-09-01T17:26:16Z", "ms": 1314897975836.3188 }, "end": { "local": "2011-09-01T13:14:16-05:00", "utc": "2011-09-01T18:14:16Z", "ms": 1314900855836.3188 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:46 on Wed 31 Aug to 08:32 on Thu 1 Sep.", "fact": "2011-08-31T16:45:52Z → 2011-09-01T13:32:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:27–13:15 on the 31st, 12:26–13:14 on the 1st.", "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 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 2443 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Chicago, 2011: Wednesday 31 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": "2011-08-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-31", "confidence": "determinate" } ], "quote": "In Chicago, Gaṇeśa Caturthī 2011 falls on Wednesday 31 August. Caturthī runs from 11:46 on Wed 31 Aug to 08:32 on Thu 1 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-08-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2443, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2011-08-30T15:12:07-05:00", "utc": "2011-08-30T20:12:07Z", "ms": 1314735127262.74 }, "end": { "local": "2011-08-31T11:45:52-05:00", "utc": "2011-08-31T16:45:52Z", "ms": 1314809151992.4731 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-08-30T15:12:07-05:00", "utc": "2011-08-30T20:12:07Z", "ms": 1314735127262.74 }, "end": { "local": "2011-08-31T11:45:52-05:00", "utc": "2011-08-31T16:45:52Z", "ms": 1314809151992.4731 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-08-30", "window": { "start": { "local": "2011-08-30T12:26:53-05:00", "utc": "2011-08-30T17:26:53Z", "ms": 1314725213176.009 }, "end": { "local": "2011-08-30T13:14:53-05:00", "utc": "2011-08-30T18:14:53Z", "ms": 1314728093176.009 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-08-31", "window": { "start": { "local": "2011-08-31T12:26:35-05:00", "utc": "2011-08-31T17:26:35Z", "ms": 1314811594665.2634 }, "end": { "local": "2011-08-31T13:14:35-05:00", "utc": "2011-08-31T18:14:35Z", "ms": 1314814474665.2634 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 15:12 on Tue 30 Aug to 11:46 on Wed 31 Aug.", "fact": "2011-08-30T20:12:07Z → 2011-08-31T16:45:52Z" }, { "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": "Tṛtīyā must be present during madhyāhna. It covers 0 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": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: paraviddha → second-day · margin 2443 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Chicago, 2011: Wednesday 31 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": "2011-08-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-08-31", "confidence": "determinate" } ], "quote": "In Chicago, Haritālikā Vrata (Hartalika Teej) 2011 falls on Wednesday 31 August. Tṛtīyā runs from 15:12 on Tue 30 Aug to 11:46 on Wed 31 Aug, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14028, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2011-09-01T08:32:28-05:00", "utc": "2011-09-01T13:32:28Z", "ms": 1314883947661.0762 }, "end": { "local": "2011-09-02T05:40:10-05:00", "utc": "2011-09-02T10:40:10Z", "ms": 1314960010350.1895 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-09-01T08:32:28-05:00", "utc": "2011-09-01T13:32:28Z", "ms": 1314883947661.0762 }, "end": { "local": "2011-09-02T05:40:10-05:00", "utc": "2011-09-02T10:40:10Z", "ms": 1314960010350.1895 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-09-01", "window": { "start": { "local": "2011-09-01T12:26:16-05:00", "utc": "2011-09-01T17:26:16Z", "ms": 1314897975836.3188 }, "end": { "local": "2011-09-01T13:14:16-05:00", "utc": "2011-09-01T18:14:16Z", "ms": 1314900855836.3188 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-09-02", "window": { "start": { "local": "2011-09-02T12:25:57-05:00", "utc": "2011-09-02T17:25:57Z", "ms": 1314984356702.2744 }, "end": { "local": "2011-09-02T13:13:57-05:00", "utc": "2011-09-02T18:13:57Z", "ms": 1314987236702.2744 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 08:32 on Thu 1 Sep to 05:40 on Fri 2 Sep.", "fact": "2011-09-01T13:32:28Z → 2011-09-02T10:40:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 1st, 12:26–13:14 on the 2nd.", "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 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 14028 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Chicago, 2011: Thursday 1 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Rsi pancami (madhyahnavyapini) — If occurs on two successive days, it is to be observed according to Madhava on the 1st day and according to Hemadri and Divodasa on the 2nd day" } ], "kaala": "madhyahna", "priority": "disputed", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-09-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-01", "confidence": "determinate" } ], "quote": "In Chicago, Ṛṣi Pañcamī 2011 falls on Thursday 1 September. Pañcamī runs from 08:32 on Thu 1 Sep to 05:40 on Fri 2 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24346, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2011-09-02T05:40:10-05:00", "utc": "2011-09-02T10:40:10Z", "ms": 1314960010350.1895 }, "end": { "local": "2011-09-03T03:15:31-05:00", "utc": "2011-09-03T08:15:31Z", "ms": 1315037730930.0183 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-09-02T05:40:10-05:00", "utc": "2011-09-02T10:40:10Z", "ms": 1314960010350.1895 }, "end": { "local": "2011-09-03T03:15:31-05:00", "utc": "2011-09-03T08:15:31Z", "ms": 1315037730930.0183 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-09-02", "window": { "start": { "local": "2011-09-02T12:25:57-05:00", "utc": "2011-09-02T17:25:57Z", "ms": 1314984356702.2744 }, "end": { "local": "2011-09-02T13:13:57-05:00", "utc": "2011-09-02T18:13:57Z", "ms": 1314987236702.2744 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-09-03", "window": { "start": { "local": "2011-09-03T12:25:37-05:00", "utc": "2011-09-03T17:25:37Z", "ms": 1315070737277.6826 }, "end": { "local": "2011-09-03T13:13:37-05:00", "utc": "2011-09-03T18:13:37Z", "ms": 1315073617277.6826 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 05:40 on Fri 2 Sep to 03:16 on Sat 3 Sep.", "fact": "2011-09-02T10:40:10Z → 2011-09-03T08:15:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 2nd, 12:26–13:14 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24346 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Chicago, 2011: Friday 2 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi-bhadrapada", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Surya sasthi (paraviddha), Lolarka sasthi" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-02", "confidence": "determinate" } ], "quote": "In Chicago, Sūrya Ṣaṣṭhī (Bhādrapada) 2011 falls on Friday 2 September. Ṣaṣṭhī runs from 05:40 on Fri 2 Sep to 03:16 on Sat 3 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33006, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2011-09-03T03:15:31-05:00", "utc": "2011-09-03T08:15:31Z", "ms": 1315037730930.0183 }, "end": { "local": "2011-09-04T01:22:53-05:00", "utc": "2011-09-04T06:22:53Z", "ms": 1315117372922.4724 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-09-03T03:15:31-05:00", "utc": "2011-09-03T08:15:31Z", "ms": 1315037730930.0183 }, "end": { "local": "2011-09-04T01:22:53-05:00", "utc": "2011-09-04T06:22:53Z", "ms": 1315117372922.4724 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-09-03", "window": { "start": { "local": "2011-09-03T12:25:37-05:00", "utc": "2011-09-03T17:25:37Z", "ms": 1315070737277.6826 }, "end": { "local": "2011-09-03T13:13:37-05:00", "utc": "2011-09-03T18:13:37Z", "ms": 1315073617277.6826 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-09-04", "window": { "start": { "local": "2011-09-04T12:25:18-05:00", "utc": "2011-09-04T17:25:18Z", "ms": 1315157117578.587 }, "end": { "local": "2011-09-04T13:13:18-05:00", "utc": "2011-09-04T18:13:18Z", "ms": 1315159997578.587 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 03:16 on Sat 3 Sep to 01:23 on Sun 4 Sep.", "fact": "2011-09-03T08:15:31Z → 2011-09-04T06:22:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 3rd, 12:25–13:13 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 33006 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Chicago, 2011: Saturday 3 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "muktabharana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Muktabharana vrata (purvaviddha), Lalita saptami (Bengal & Orissa)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-09-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-03", "confidence": "determinate" } ], "quote": "In Chicago, Muktābharaṇa Vrata 2011 falls on Saturday 3 September. Saptamī runs from 03:16 on Sat 3 Sep to 01:23 on Sun 4 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39064, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2011-09-04T01:22:53-05:00", "utc": "2011-09-04T06:22:53Z", "ms": 1315117372922.4724 }, "end": { "local": "2011-09-05T00:04:21-05:00", "utc": "2011-09-05T05:04:21Z", "ms": 1315199061457.4187 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-09-04T01:22:53-05:00", "utc": "2011-09-04T06:22:53Z", "ms": 1315117372922.4724 }, "end": { "local": "2011-09-05T00:04:21-05:00", "utc": "2011-09-05T05:04:21Z", "ms": 1315199061457.4187 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-09-03", "window": { "start": { "local": "2011-09-03T12:25:37-05:00", "utc": "2011-09-03T17:25:37Z", "ms": 1315070737277.6826 }, "end": { "local": "2011-09-03T13:13:37-05:00", "utc": "2011-09-03T18:13:37Z", "ms": 1315073617277.6826 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-09-04", "window": { "start": { "local": "2011-09-04T12:25:18-05:00", "utc": "2011-09-04T17:25:18Z", "ms": 1315157117578.587 }, "end": { "local": "2011-09-04T13:13:18-05:00", "utc": "2011-09-04T18:13:18Z", "ms": 1315159997578.587 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 01:23 on Sun 4 Sep to 00:04 on Mon 5 Sep.", "fact": "2011-09-04T06:22:53Z → 2011-09-05T05:04:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 on the 3rd, 12:25–13:13 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 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 39064 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Chicago, 2011: Sunday 4 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "radhashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Durvastami (purvaviddha — S 8 of saura Bhadra except Bengal), Mahalaksmi vratarambha, Radhastami (madhyahna vyapini)" } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-04", "confidence": "determinate" } ], "quote": "In Chicago, Rādhāṣṭamī 2011 falls on Sunday 4 September. Aṣṭamī runs from 01:23 on Sun 4 Sep to 00:04 on Mon 5 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-09-07", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25162, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-09-06T23:07:25-05:00", "utc": "2011-09-07T04:07:25Z", "ms": 1315368444879.6343 }, "end": { "local": "2011-09-07T23:24:12-05:00", "utc": "2011-09-08T04:24:12Z", "ms": 1315455851824.0515 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-09-06T23:07:25-05:00", "utc": "2011-09-07T04:07:25Z", "ms": 1315368444879.6343 }, "end": { "local": "2011-09-07T23:24:12-05:00", "utc": "2011-09-08T04:24:12Z", "ms": 1315455851824.0515 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-09-07", "window": { "start": { "local": "2011-09-07T06:22:32-05:00", "utc": "2011-09-07T11:22:32Z", "ms": 1315394552009.891 }, "end": { "local": "2011-09-07T06:22:32-05:00", "utc": "2011-09-07T11:22:32Z", "ms": 1315394552009.891 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-09-08", "window": { "start": { "local": "2011-09-08T06:23:34-05:00", "utc": "2011-09-08T11:23:34Z", "ms": 1315481013552.7249 }, "end": { "local": "2011-09-08T06:23:34-05:00", "utc": "2011-09-08T11:23:34Z", "ms": 1315481013552.7249 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:07 on Tue 6 Sep to 23:24 on Wed 7 Sep.", "fact": "2011-09-07T04:07:25Z → 2011-09-08T04:24:12Z" }, { "step": "kaala", "text": "Sunrise is at 06:23 on the 7th and 06:24 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 7th and is not on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25162 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Chicago, 2011: Wednesday 7 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": "2011-09-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-07", "confidence": "determinate" } ], "quote": "In Chicago, Parivartanī Ekādaśī 2011 falls on Wednesday 7 September. Ekādaśī runs from 23:07 on Tue 6 Sep to 23:24 on Wed 7 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-09-07", "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/2011/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36715, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2011-09-07T23:24:12-05:00", "utc": "2011-09-08T04:24:12Z", "ms": 1315455851824.0515 }, "end": { "local": "2011-09-09T00:07:00-05:00", "utc": "2011-09-09T05:07:00Z", "ms": 1315544819653.7847 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-09-07T23:24:12-05:00", "utc": "2011-09-08T04:24:12Z", "ms": 1315455851824.0515 }, "end": { "local": "2011-09-09T00:07:00-05:00", "utc": "2011-09-09T05:07:00Z", "ms": 1315544819653.7847 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-09-07", "window": { "start": { "local": "2011-09-07T12:24:17-05:00", "utc": "2011-09-07T17:24:17Z", "ms": 1315416257013.0078 }, "end": { "local": "2011-09-07T13:12:17-05:00", "utc": "2011-09-07T18:12:17Z", "ms": 1315419137013.0078 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-09-08", "window": { "start": { "local": "2011-09-08T12:23:56-05:00", "utc": "2011-09-08T17:23:56Z", "ms": 1315502636399.7466 }, "end": { "local": "2011-09-08T13:11:56-05:00", "utc": "2011-09-08T18:11:56Z", "ms": 1315505516399.7466 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 23:24 on Wed 7 Sep to 00:07 on Fri 9 Sep.", "fact": "2011-09-08T04:24:12Z → 2011-09-09T05:07:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 7th, 12:24–13:12 on the 8th.", "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 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36715 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Chicago, 2011: Thursday 8 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vamana-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Visnuparivartanotsava, Sakrotthana (in any of the naksatras U. Asadha, Sravana & Dhanistha), Kalki dvadasi, Sravana dvadasi (when combined with naksatra Sravana), Vamana jayanti (madhyahna vyapini)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-08", "confidence": "determinate" } ], "quote": "In Chicago, Vāmana Jayantī 2011 falls on Thursday 8 September. Dvādaśī runs from 23:24 on Wed 7 Sep to 00:07 on Fri 9 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/pradosha-vrata?on=2011-09-09", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12302, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-09-09T00:07:00-05:00", "utc": "2011-09-09T05:07:00Z", "ms": 1315544819653.7847 }, "end": { "local": "2011-09-10T01:13:01-05:00", "utc": "2011-09-10T06:13:01Z", "ms": 1315635180538.7966 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-09-09T00:07:00-05:00", "utc": "2011-09-09T05:07:00Z", "ms": 1315544819653.7847 }, "end": { "local": "2011-09-10T01:13:01-05:00", "utc": "2011-09-10T06:13:01Z", "ms": 1315635180538.7966 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-09-08", "window": { "start": { "local": "2011-09-08T19:12:19-05:00", "utc": "2011-09-09T00:12:19Z", "ms": 1315527139246.7683 }, "end": { "local": "2011-09-08T20:41:57-05:00", "utc": "2011-09-09T01:41:57Z", "ms": 1315532517357.8462 } }, "covered_min": 0, "window_min": 90, "qualifies": false }, { "local_date": "2011-09-09", "window": { "start": { "local": "2011-09-09T19:10:36-05:00", "utc": "2011-09-10T00:10:36Z", "ms": 1315613436137.122 }, "end": { "local": "2011-09-09T20:40:36-05:00", "utc": "2011-09-10T01:40:36Z", "ms": 1315618836199.244 } }, "covered_min": 90, "window_min": 90, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:07 on Fri 9 Sep to 01:13 on Sat 10 Sep.", "fact": "2011-09-09T05:07:00Z → 2011-09-10T06:13:01Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:12–20:42 on the 8th, 19:11–20:41 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 90 minutes on the 8th and 90 of 90 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12302 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2011: Friday 9 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-09-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-09", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2011 falls on Friday 9 September. Trayodaśī runs from 00:07 on Fri 9 Sep to 01:13 on Sat 10 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-09-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13592, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-09-10T01:13:01-05:00", "utc": "2011-09-10T06:13:01Z", "ms": 1315635180538.7966 }, "end": { "local": "2011-09-11T02:40:07-05:00", "utc": "2011-09-11T07:40:07Z", "ms": 1315726806563.3145 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2011-09-10T01:13:01-05:00", "utc": "2011-09-10T06:13:01Z", "ms": 1315635180538.7966 }, "end": { "local": "2011-09-11T02:40:07-05:00", "utc": "2011-09-11T07:40:07Z", "ms": 1315726806563.3145 } }, "kaala": "udaya-3", "days": [ { "local_date": "2011-09-10", "window": { "start": { "local": "2011-09-10T06:25:37-05:00", "utc": "2011-09-10T11:25:37Z", "ms": 1315653936603.0354 }, "end": { "local": "2011-09-10T08:58:16-05:00", "utc": "2011-09-10T13:58:16Z", "ms": 1315663095826.1233 } }, "covered_min": 153, "window_min": 153, "qualifies": true }, { "local_date": "2011-09-11", "window": { "start": { "local": "2011-09-11T06:26:38-05:00", "utc": "2011-09-11T11:26:38Z", "ms": 1315740398134.8633 }, "end": { "local": "2011-09-11T08:58:44-05:00", "utc": "2011-09-11T13:58:44Z", "ms": 1315749524312.3164 } }, "covered_min": 0, "window_min": 152, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:13 on Sat 10 Sep to 02:40 on Sun 11 Sep.", "fact": "2011-09-10T06:13:01Z → 2011-09-11T07:40:07Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:26–08:58 on the 10th, 06:27–08:59 on the 11th.", "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 153 of 153 minutes on the 10th and 0 of 152 on the 11th.", "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 13592 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Chicago, 2011: Saturday 10 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": "2011-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-10", "confidence": "determinate" } ], "quote": "In Chicago, Ananta Caturdaśī 2011 falls on Saturday 10 September. Caturdaśī runs from 01:13 on Sat 10 Sep to 02:40 on Sun 11 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/sankashta-chaturthi?on=2011-09-15", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24724, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-09-15T11:20:03-05:00", "utc": "2011-09-15T16:20:03Z", "ms": 1316103603088.1777 }, "end": { "local": "2011-09-16T13:53:07-05:00", "utc": "2011-09-16T18:53:07Z", "ms": 1316199186852.8298 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-09-15T11:20:03-05:00", "utc": "2011-09-15T16:20:03Z", "ms": 1316103603088.1777 }, "end": { "local": "2011-09-16T13:53:07-05:00", "utc": "2011-09-16T18:53:07Z", "ms": 1316199186852.8298 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-09-15", "window": { "start": { "local": "2011-09-15T20:12:57-05:00", "utc": "2011-09-16T01:12:57Z", "ms": 1316135577462.828 }, "end": { "local": "2011-09-15T20:12:57-05:00", "utc": "2011-09-16T01:12:57Z", "ms": 1316135577462.828 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-09-16", "window": { "start": { "local": "2011-09-16T20:45:10-05:00", "utc": "2011-09-17T01:45:10Z", "ms": 1316223910425.52 }, "end": { "local": "2011-09-16T20:45:10-05:00", "utc": "2011-09-17T01:45:10Z", "ms": 1316223910425.52 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:20 on Thu 15 Sep to 13:53 on Fri 16 Sep.", "fact": "2011-09-15T16:20:03Z → 2011-09-16T18:53:07Z" }, { "step": "kaala", "text": "Moonrise is at 20:13 on the 15th and 20:45 on the 16th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 15th and is not on the 16th.", "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 24724 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2011: Thursday 15 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": "2011-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-15", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2011 falls on Thursday 15 September. Caturthī runs from 11:20 on Thu 15 Sep to 13:53 on Fri 16 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/sankashta-chaturthi?on=2011-09-15", "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/2011/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13086, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2011-09-17T16:19:35-05:00", "utc": "2011-09-17T21:19:35Z", "ms": 1316294375148.3066 }, "end": { "local": "2011-09-18T18:27:37-05:00", "utc": "2011-09-18T23:27:37Z", "ms": 1316388457284.821 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-09-17T16:19:35-05:00", "utc": "2011-09-17T21:19:35Z", "ms": 1316294375148.3066 }, "end": { "local": "2011-09-18T18:27:37-05:00", "utc": "2011-09-18T23:27:37Z", "ms": 1316388457284.821 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-09-17", "window": { "start": { "local": "2011-09-17T21:22:23-05:00", "utc": "2011-09-18T02:22:23Z", "ms": 1316312543241.2644 }, "end": { "local": "2011-09-17T21:22:23-05:00", "utc": "2011-09-18T02:22:23Z", "ms": 1316312543241.2644 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-09-18", "window": { "start": { "local": "2011-09-18T22:05:44-05:00", "utc": "2011-09-19T03:05:44Z", "ms": 1316401543571.715 }, "end": { "local": "2011-09-18T22:05:44-05:00", "utc": "2011-09-19T03:05:44Z", "ms": 1316401543571.715 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 16:20 on Sat 17 Sep to 18:28 on Sun 18 Sep.", "fact": "2011-09-17T21:19:35Z → 2011-09-18T23:27:37Z" }, { "step": "kaala", "text": "Moonrise is at 21:22 on the 17th and 22:06 on the 18th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is on the 17th and is not on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 13086 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Chicago, 2011: Saturday 17 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": "2011-09-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-17", "confidence": "determinate" } ], "quote": "In Chicago, Candra Ṣaṣṭhī 2011 falls on Saturday 17 September. Ṣaṣṭhī runs from 16:20 on Sat 17 Sep to 18:28 on Sun 18 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10259, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2011-09-19T20:04:56-05:00", "utc": "2011-09-20T01:04:56Z", "ms": 1316480695968.392 }, "end": { "local": "2011-09-20T21:00:44-05:00", "utc": "2011-09-21T02:00:44Z", "ms": 1316570444287.6187 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-09-19T20:04:56-05:00", "utc": "2011-09-20T01:04:56Z", "ms": 1316480695968.392 }, "end": { "local": "2011-09-20T21:00:44-05:00", "utc": "2011-09-21T02:00:44Z", "ms": 1316570444287.6187 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-09-19", "window": { "start": { "local": "2011-09-19T22:55:55-05:00", "utc": "2011-09-20T03:55:55Z", "ms": 1316490954972.4307 }, "end": { "local": "2011-09-19T22:55:55-05:00", "utc": "2011-09-20T03:55:55Z", "ms": 1316490954972.4307 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-09-20", "window": { "start": { "local": "2011-09-20T23:52:58-05:00", "utc": "2011-09-21T04:52:58Z", "ms": 1316580778097.217 }, "end": { "local": "2011-09-20T23:52:58-05:00", "utc": "2011-09-21T04:52:58Z", "ms": 1316580778097.217 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 20:05 on Mon 19 Sep to 21:01 on Tue 20 Sep.", "fact": "2011-09-20T01:04:56Z → 2011-09-21T02:00:44Z" }, { "step": "kaala", "text": "Moonrise is at 22:56 on the 19th and 23:53 on the 20th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 19th and is not on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10259 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Chicago, 2011: Monday 19 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalakshmi-vrata-samapana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-09-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-19", "confidence": "determinate" } ], "quote": "In Chicago, Mahālakṣmī Vrata Samāpana 2011 falls on Monday 19 September. Aṣṭamī runs from 20:05 on Mon 19 Sep to 21:01 on Tue 20 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-20", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1319, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2011-09-19T20:04:56-05:00", "utc": "2011-09-20T01:04:56Z", "ms": 1316480695968.392 }, "end": { "local": "2011-09-20T21:00:44-05:00", "utc": "2011-09-21T02:00:44Z", "ms": 1316570444287.6187 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-09-19T20:04:56-05:00", "utc": "2011-09-20T01:04:56Z", "ms": 1316480695968.392 }, "end": { "local": "2011-09-20T21:00:44-05:00", "utc": "2011-09-21T02:00:44Z", "ms": 1316570444287.6187 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-09-19", "window": { "start": { "local": "2011-09-19T18:53:13-05:00", "utc": "2011-09-19T23:53:13Z", "ms": 1316476393211.7693 }, "end": { "local": "2011-09-19T20:26:55-05:00", "utc": "2011-09-20T01:26:55Z", "ms": 1316482014720.2554 } }, "covered_min": 22, "window_min": 94, "qualifies": true }, { "local_date": "2011-09-20", "window": { "start": { "local": "2011-09-20T18:51:28-05:00", "utc": "2011-09-20T23:51:28Z", "ms": 1316562688424.2725 }, "end": { "local": "2011-09-20T20:25:32-05:00", "utc": "2011-09-21T01:25:32Z", "ms": 1316568332217.8298 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 20:05 on Mon 19 Sep to 21:01 on Tue 20 Sep.", "fact": "2011-09-20T01:04:56Z → 2011-09-21T02:00:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:53–20:27 on the 19th, 18:51–20:26 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 22 of 94 minutes on the 19th and 94 of 94 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1319 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Chicago, 2011: Tuesday 20 September.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "jitashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-09-20", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-20", "confidence": "boundary" } ], "quote": "In Chicago, Jitāṣṭamī (Jitiya) 2011 falls on Tuesday 20 September. Aṣṭamī runs from 20:05 on Mon 19 Sep to 21:01 on Tue 20 Sep and covers all of pradoṣa that evening. It also reaches the previous evening for 22 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/2011/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/2011/ekadashi?on=2011-09-23", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37019, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-09-22T20:22:03-05:00", "utc": "2011-09-23T01:22:03Z", "ms": 1316740922784.7085 }, "end": { "local": "2011-09-23T18:45:32-05:00", "utc": "2011-09-23T23:45:32Z", "ms": 1316821532244.8406 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-09-22T20:22:03-05:00", "utc": "2011-09-23T01:22:03Z", "ms": 1316740922784.7085 }, "end": { "local": "2011-09-23T18:45:32-05:00", "utc": "2011-09-23T23:45:32Z", "ms": 1316821532244.8406 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-09-23", "window": { "start": { "local": "2011-09-23T06:39:02-05:00", "utc": "2011-09-23T11:39:02Z", "ms": 1316777942034.826 }, "end": { "local": "2011-09-23T06:39:02-05:00", "utc": "2011-09-23T11:39:02Z", "ms": 1316777942034.826 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-09-24", "window": { "start": { "local": "2011-09-24T06:40:05-05:00", "utc": "2011-09-24T11:40:05Z", "ms": 1316864404861.321 }, "end": { "local": "2011-09-24T06:40:05-05:00", "utc": "2011-09-24T11:40:05Z", "ms": 1316864404861.321 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:22 on Thu 22 Sep to 18:46 on Fri 23 Sep.", "fact": "2011-09-23T01:22:03Z → 2011-09-23T23:45:32Z" }, { "step": "kaala", "text": "Sunrise is at 06:39 on the 23rd and 06:40 on the 24th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 23rd and is not on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37019 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Chicago, 2011: Friday 23 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": "2011-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-23", "confidence": "determinate" } ], "quote": "In Chicago, Indirā Ekādaśī 2011 falls on Friday 23 September. Ekādaśī runs from 20:22 on Thu 22 Sep to 18:46 on Fri 23 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-09-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-09-24", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8486, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-09-24T16:23:04-05:00", "utc": "2011-09-24T21:23:04Z", "ms": 1316899383774.9426 }, "end": { "local": "2011-09-25T13:22:37-05:00", "utc": "2011-09-25T18:22:37Z", "ms": 1316974957268.5105 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-09-24T16:23:04-05:00", "utc": "2011-09-24T21:23:04Z", "ms": 1316899383774.9426 }, "end": { "local": "2011-09-25T13:22:37-05:00", "utc": "2011-09-25T18:22:37Z", "ms": 1316974957268.5105 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-09-24", "window": { "start": { "local": "2011-09-24T18:44:30-05:00", "utc": "2011-09-24T23:44:30Z", "ms": 1316907869922.0564 }, "end": { "local": "2011-09-24T20:20:03-05:00", "utc": "2011-09-25T01:20:03Z", "ms": 1316913602980.803 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "2011-09-25", "window": { "start": { "local": "2011-09-25T18:42:46-05:00", "utc": "2011-09-25T23:42:46Z", "ms": 1316994165606.882 }, "end": { "local": "2011-09-25T20:18:41-05:00", "utc": "2011-09-26T01:18:41Z", "ms": 1316999920998.6287 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 16:23 on Sat 24 Sep to 13:23 on Sun 25 Sep.", "fact": "2011-09-24T21:23:04Z → 2011-09-25T18:22:37Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:44–20:20 on the 24th, 18:43–20:19 on the 25th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 96 of 96 minutes on the 24th and 0 of 96 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8486 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2011: Saturday 24 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": "2011-09-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-24", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2011 falls on Saturday 24 September. Trayodaśī runs from 16:23 on Sat 24 Sep to 13:23 on Sun 25 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-09-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/shivaratri?on=2011-09-25", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31661, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-09-25T13:22:37-05:00", "utc": "2011-09-25T18:22:37Z", "ms": 1316974957268.5105 }, "end": { "local": "2011-09-26T09:54:09-05:00", "utc": "2011-09-26T14:54:09Z", "ms": 1317048849097.6465 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-09-25T13:22:37-05:00", "utc": "2011-09-25T18:22:37Z", "ms": 1316974957268.5105 }, "end": { "local": "2011-09-26T09:54:09-05:00", "utc": "2011-09-26T14:54:09Z", "ms": 1317048849097.6465 } }, "kaala": "nishita", "days": [ { "local_date": "2011-09-24", "window": { "start": { "local": "2011-09-25T00:18:49-05:00", "utc": "2011-09-25T05:18:49Z", "ms": 1316927928892.356 }, "end": { "local": "2011-09-25T01:06:49-05:00", "utc": "2011-09-25T06:06:49Z", "ms": 1316930808892.356 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-09-25", "window": { "start": { "local": "2011-09-26T00:18:28-05:00", "utc": "2011-09-26T05:18:28Z", "ms": 1317014308325.9316 }, "end": { "local": "2011-09-26T01:06:28-05:00", "utc": "2011-09-26T06:06:28Z", "ms": 1317017188325.9316 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:23 on Sun 25 Sep to 09:54 on Mon 26 Sep.", "fact": "2011-09-25T18:22:37Z → 2011-09-26T14:54:09Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:19–01:07 on the 24th, 00:18–01:06 on the 25th.", "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 24th and 48 of 48 on the 25th.", "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 31661 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2011: Sunday 25 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": "2011-09-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-25", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2011 falls on Sunday 25 September. Caturdaśī runs from 13:23 on Sun 25 Sep to 09:54 on Mon 26 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/shivaratri?on=2011-09-25", "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/2011/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14360, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2011-09-26T09:54:09-05:00", "utc": "2011-09-26T14:54:09Z", "ms": 1317048849097.6465 }, "end": { "local": "2011-09-27T06:08:41-05:00", "utc": "2011-09-27T11:08:41Z", "ms": 1317121720729.9314 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-09-26T09:54:09-05:00", "utc": "2011-09-26T14:54:09Z", "ms": 1317048849097.6465 }, "end": { "local": "2011-09-27T06:08:41-05:00", "utc": "2011-09-27T11:08:41Z", "ms": 1317121720729.9314 } }, "kaala": "aparahna", "days": [ { "local_date": "2011-09-26", "window": { "start": { "local": "2011-09-26T13:53:29-05:00", "utc": "2011-09-26T18:53:29Z", "ms": 1317063209301.3594 }, "end": { "local": "2011-09-26T16:17:15-05:00", "utc": "2011-09-26T21:17:15Z", "ms": 1317071835386.8186 } }, "covered_min": 144, "window_min": 144, "qualifies": true }, { "local_date": "2011-09-27", "window": { "start": { "local": "2011-09-27T13:52:52-05:00", "utc": "2011-09-27T18:52:52Z", "ms": 1317149572292.2957 }, "end": { "local": "2011-09-27T16:16:05-05:00", "utc": "2011-09-27T21:16:05Z", "ms": 1317158164918.5723 } }, "covered_min": 0, "window_min": 143, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 09:54 on Mon 26 Sep to 06:09 on Tue 27 Sep.", "fact": "2011-09-26T14:54:09Z → 2011-09-27T11:08:41Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:53–16:17 on the 26th, 13:53–16:16 on the 27th.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 144 of 144 minutes on the 26th and 0 of 143 on the 27th.", "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 14360 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Chicago, 2011: Monday 26 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": "2011-09-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-26", "confidence": "determinate" } ], "quote": "In Chicago, Mahālaya Amāvāsyā 2011 falls on Monday 26 September. Amāvasyā runs from 09:54 on Mon 26 Sep to 06:09 on Tue 27 Sep and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22115, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2011-09-27T06:08:41-05:00", "utc": "2011-09-27T11:08:41Z", "ms": 1317121720729.9314 }, "end": { "local": "2011-09-28T02:17:38-05:00", "utc": "2011-09-28T07:17:38Z", "ms": 1317194257672.4277 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-09-27T06:08:41-05:00", "utc": "2011-09-27T11:08:41Z", "ms": 1317121720729.9314 }, "end": { "local": "2011-09-28T02:17:38-05:00", "utc": "2011-09-28T07:17:38Z", "ms": 1317194257672.4277 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-09-27", "window": { "start": { "local": "2011-09-27T12:17:16-05:00", "utc": "2011-09-27T17:17:16Z", "ms": 1317143835979.1572 }, "end": { "local": "2011-09-27T13:05:16-05:00", "utc": "2011-09-27T18:05:16Z", "ms": 1317146715979.1572 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-09-28", "window": { "start": { "local": "2011-09-28T12:16:56-05:00", "utc": "2011-09-28T17:16:56Z", "ms": 1317230215911.6807 }, "end": { "local": "2011-09-28T13:04:56-05:00", "utc": "2011-09-28T18:04:56Z", "ms": 1317233095911.6807 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 06:09 on Tue 27 Sep to 02:18 on Wed 28 Sep.", "fact": "2011-09-27T11:08:41Z → 2011-09-28T07:17:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:17–13:05 on the 27th, 12:17–13:05 on the 28th.", "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 27th and 0 of 48 on the 28th.", "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 22115 s" }, { "step": "ruling", "text": "Navarātrārambha, Chicago, 2011: Tuesday 27 September.", "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": "2011-09-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-27", "confidence": "determinate" } ], "quote": "In Chicago, Navarātrārambha (Navratri) 2011 falls on Tuesday 27 September. Pratipadā runs from 06:09 on Tue 27 Sep to 02:18 on Wed 28 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/vinayaka-chaturthi?on=2011-09-30", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-09-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10548, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-09-29T19:03:15-05:00", "utc": "2011-09-30T00:03:15Z", "ms": 1317340995233.6985 }, "end": { "local": "2011-09-30T16:00:05-05:00", "utc": "2011-09-30T21:00:05Z", "ms": 1317416404627.628 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-09-29T19:03:15-05:00", "utc": "2011-09-30T00:03:15Z", "ms": 1317340995233.6985 }, "end": { "local": "2011-09-30T16:00:05-05:00", "utc": "2011-09-30T21:00:05Z", "ms": 1317416404627.628 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-09-29", "window": { "start": { "local": "2011-09-29T12:16:36-05:00", "utc": "2011-09-29T17:16:36Z", "ms": 1317316596071.4712 }, "end": { "local": "2011-09-29T13:04:36-05:00", "utc": "2011-09-29T18:04:36Z", "ms": 1317319476071.4712 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-09-30", "window": { "start": { "local": "2011-09-30T12:16:16-05:00", "utc": "2011-09-30T17:16:16Z", "ms": 1317402976474.245 }, "end": { "local": "2011-09-30T13:04:16-05:00", "utc": "2011-09-30T18:04:16Z", "ms": 1317405856474.245 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:03 on Thu 29 Sep to 16:00 on Fri 30 Sep.", "fact": "2011-09-30T00:03:15Z → 2011-09-30T21:00:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:17–13:05 on the 29th, 12:16–13:04 on the 30th.", "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 29th and 48 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10548 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2011: Friday 30 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": "2011-09-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-09-30", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2011 falls on Friday 30 September. Caturthī runs from 19:03 on Thu 29 Sep to 16:00 on Fri 30 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/vinayaka-chaturthi?on=2011-09-30", "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/2011/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10594, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2011-10-02T11:40:30-05:00", "utc": "2011-10-02T16:40:30Z", "ms": 1317573630302.7698 }, "end": { "local": "2011-10-03T10:32:50-05:00", "utc": "2011-10-03T15:32:50Z", "ms": 1317655970483.448 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-10-02T11:40:30-05:00", "utc": "2011-10-02T16:40:30Z", "ms": 1317573630302.7698 }, "end": { "local": "2011-10-03T10:32:50-05:00", "utc": "2011-10-03T15:32:50Z", "ms": 1317655970483.448 } }, "kaala": "udaya-1", "days": [ { "local_date": "2011-10-02", "window": { "start": { "local": "2011-10-02T06:48:34-05:00", "utc": "2011-10-02T11:48:34Z", "ms": 1317556114203.9827 }, "end": { "local": "2011-10-02T07:35:23-05:00", "utc": "2011-10-02T12:35:23Z", "ms": 1317558922720.319 } }, "covered_min": 0, "window_min": 47, "qualifies": false }, { "local_date": "2011-10-03", "window": { "start": { "local": "2011-10-03T06:49:39-05:00", "utc": "2011-10-03T11:49:39Z", "ms": 1317642578788.2468 }, "end": { "local": "2011-10-03T07:36:16-05:00", "utc": "2011-10-03T12:36:16Z", "ms": 1317645376191.4165 } }, "covered_min": 47, "window_min": 47, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 11:41 on Sun 2 Oct to 10:33 on Mon 3 Oct.", "fact": "2011-10-02T16:40:30Z → 2011-10-03T15:32:50Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 06:49–07:35 on the 2nd, 06:50–07:36 on the 3rd.", "fact": "udaya-1: day-muhurta-1-1 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must hold through the first muhūrta after sunrise. It covers 0 of 47 minutes on the 2nd and 47 of 47 on the 3rd.", "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 10594 s" }, { "step": "ruling", "text": "Durgā Saptamī, Chicago, 2011: Monday 3 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": "2011-10-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-03", "confidence": "determinate" } ], "quote": "In Chicago, Durgā Saptamī 2011 falls on Monday 3 October. Saptamī runs from 11:41 on Sun 2 Oct to 10:33 on Mon 3 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6149, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2011-10-03T10:32:50-05:00", "utc": "2011-10-03T15:32:50Z", "ms": 1317655970483.448 }, "end": { "local": "2011-10-04T10:07:50-05:00", "utc": "2011-10-04T15:07:50Z", "ms": 1317740869858.274 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-10-03T10:32:50-05:00", "utc": "2011-10-03T15:32:50Z", "ms": 1317655970483.448 }, "end": { "local": "2011-10-04T10:07:50-05:00", "utc": "2011-10-04T15:07:50Z", "ms": 1317740869858.274 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-10-03", "window": { "start": { "local": "2011-10-03T12:15:19-05:00", "utc": "2011-10-03T17:15:19Z", "ms": 1317662119312.0203 }, "end": { "local": "2011-10-03T13:03:19-05:00", "utc": "2011-10-03T18:03:19Z", "ms": 1317664999312.0203 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-10-04", "window": { "start": { "local": "2011-10-04T12:15:01-05:00", "utc": "2011-10-04T17:15:01Z", "ms": 1317748500862.9478 }, "end": { "local": "2011-10-04T13:03:01-05:00", "utc": "2011-10-04T18:03:01Z", "ms": 1317751380862.9478 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 10:33 on Mon 3 Oct to 10:08 on Tue 4 Oct.", "fact": "2011-10-03T15:32:50Z → 2011-10-04T15:07:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:15–13:03 on the 3rd, 12:15–13:03 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6149 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Chicago, 2011: Monday 3 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": "2011-10-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-03", "confidence": "determinate" } ], "quote": "In Chicago, Mahāṣṭamī (Durga Ashtami) 2011 falls on Monday 3 October. Aṣṭamī runs from 10:33 on Mon 3 Oct to 10:08 on Tue 4 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6701, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2011-10-04T10:07:50-05:00", "utc": "2011-10-04T15:07:50Z", "ms": 1317740869858.274 }, "end": { "local": "2011-10-05T10:23:01-05:00", "utc": "2011-10-05T15:23:01Z", "ms": 1317828181306.2769 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-10-04T10:07:50-05:00", "utc": "2011-10-04T15:07:50Z", "ms": 1317740869858.274 }, "end": { "local": "2011-10-05T10:23:01-05:00", "utc": "2011-10-05T15:23:01Z", "ms": 1317828181306.2769 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-10-04", "window": { "start": { "local": "2011-10-04T12:15:01-05:00", "utc": "2011-10-04T17:15:01Z", "ms": 1317748500862.9478 }, "end": { "local": "2011-10-04T13:03:01-05:00", "utc": "2011-10-04T18:03:01Z", "ms": 1317751380862.9478 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-10-05", "window": { "start": { "local": "2011-10-05T12:14:43-05:00", "utc": "2011-10-05T17:14:43Z", "ms": 1317834882749.733 }, "end": { "local": "2011-10-05T13:02:43-05:00", "utc": "2011-10-05T18:02:43Z", "ms": 1317837762749.733 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 10:08 on Tue 4 Oct to 10:23 on Wed 5 Oct.", "fact": "2011-10-04T15:07:50Z → 2011-10-05T15:23:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:15–13:03 on the 4th, 12:15–13:03 on the 5th.", "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 4th and 0 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 6701 s" }, { "step": "ruling", "text": "Mahānavamī, Chicago, 2011: Tuesday 4 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": "2011-10-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-04", "confidence": "determinate" } ], "quote": "In Chicago, Mahānavamī 2011 falls on Tuesday 4 October. Navamī runs from 10:08 on Tue 4 Oct to 10:23 on Wed 5 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-06", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1798, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "2011-10-05T10:23:01-05:00", "utc": "2011-10-05T15:23:01Z", "ms": 1317828181306.2769 }, "end": { "local": "2011-10-06T11:13:52-05:00", "utc": "2011-10-06T16:13:52Z", "ms": 1317917632304.261 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "conjunction", "start": { "local": "2011-10-05T17:55:39-05:00", "utc": "2011-10-05T22:55:39Z", "ms": 1317855338664.2048 }, "end": { "local": "2011-10-06T11:13:52-05:00", "utc": "2011-10-06T16:13:52Z", "ms": 1317917632304.261 }, "nakshatra": { "type": "nakshatra", "index": 21, "key": "shravana", "name": "Śravaṇa", "start": { "local": "2011-10-05T17:55:39-05:00", "utc": "2011-10-05T22:55:39Z", "ms": 1317855338664.2048 }, "end": { "local": "2011-10-06T19:31:53-05:00", "utc": "2011-10-07T00:31:53Z", "ms": 1317947513033.4229 } } }, "kaala": "daytime", "days": [ { "local_date": "2011-10-05", "window": { "start": { "local": "2011-10-05T06:51:49-05:00", "utc": "2011-10-05T11:51:49Z", "ms": 1317815508642.0068 }, "end": { "local": "2011-10-05T18:25:37-05:00", "utc": "2011-10-05T23:25:37Z", "ms": 1317857136857.4592 } }, "covered_min": 30, "window_min": 694, "qualifies": true }, { "local_date": "2011-10-06", "window": { "start": { "local": "2011-10-06T06:52:54-05:00", "utc": "2011-10-06T11:52:54Z", "ms": 1317901973930.9011 }, "end": { "local": "2011-10-06T18:23:56-05:00", "utc": "2011-10-06T23:23:56Z", "ms": 1317943436055.999 } }, "covered_min": 261, "window_min": 691, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Daśamī runs from 10:23 on Wed 5 Oct to 11:14 on Thu 6 Oct, and Śravaṇa from 17:56 on Wed 5 Oct to 19:32 on Thu 6 Oct. They are together from 17:56 on Wed 5 Oct to 11:14 on Thu 6 Oct.", "fact": "2011-10-05T22:55:39Z → 2011-10-06T16:13:52Z" }, { "step": "kaala", "text": "The day time is sunrise to sunset: 06:52–18:26 on the 5th, 06:53–18:24 on the 6th.", "fact": "daytime: sunrise-to-sunset · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Where Daśamī touches Śravaṇa in the day time, that day is taken. Together they cover 30 of 694 minutes on the 5th and 261 of 691 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both days qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1798 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Chicago, 2011: Thursday 6 October.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "vijaya-dashami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 10 Vijaya dasami (In Bengal it is observed as paraviddha, covering one muhurta from sunrise. In other places, if it touches Sravana naksatra in the day time it is observed on that day), Sarasvati visarjana (to be observed in naksatra Sravana), Dasahara." } ], "not_evaluated": "The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day", "conjunction": { "nakshatra": "Śravaṇa", "kaala": "daytime" } }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-10-06", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-06", "confidence": "boundary" } ], "quote": "In Chicago, Vijayā Daśamī (Dussehra) 2011 falls on Thursday 6 October. Daśamī runs from 10:23 on Wed 5 Oct to 11:14 on Thu 6 Oct and is with Śravaṇa in the day time that day, for 261 minutes. They are together in the day time on the previous day too, for 30 minutes; the rule does not say which to take, and the day they share longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-10-07", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15658, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-10-06T11:13:52-05:00", "utc": "2011-10-06T16:13:52Z", "ms": 1317917632304.261 }, "end": { "local": "2011-10-07T12:34:39-05:00", "utc": "2011-10-07T17:34:39Z", "ms": 1318008878573.4924 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-10-06T11:13:52-05:00", "utc": "2011-10-06T16:13:52Z", "ms": 1317917632304.261 }, "end": { "local": "2011-10-07T12:34:39-05:00", "utc": "2011-10-07T17:34:39Z", "ms": 1318008878573.4924 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-10-06", "window": { "start": { "local": "2011-10-06T06:52:54-05:00", "utc": "2011-10-06T11:52:54Z", "ms": 1317901973930.9011 }, "end": { "local": "2011-10-06T06:52:54-05:00", "utc": "2011-10-06T11:52:54Z", "ms": 1317901973930.9011 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-10-07", "window": { "start": { "local": "2011-10-07T06:53:59-05:00", "utc": "2011-10-07T11:53:59Z", "ms": 1317988439475.022 }, "end": { "local": "2011-10-07T06:53:59-05:00", "utc": "2011-10-07T11:53:59Z", "ms": 1317988439475.022 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:14 on Thu 6 Oct to 12:35 on Fri 7 Oct.", "fact": "2011-10-06T16:13:52Z → 2011-10-07T17:34:39Z" }, { "step": "kaala", "text": "Sunrise is at 06:53 on the 6th and 06:54 on the 7th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 6th and is on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15658 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Chicago, 2011: Friday 7 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-10-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-07", "confidence": "determinate" } ], "quote": "In Chicago, Pāśāṅkuśā Ekādaśī 2011 falls on Friday 7 October. Ekādaśī runs from 11:14 on Thu 6 Oct to 12:35 on Fri 7 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-10-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-10-08", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6986, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-10-08T14:19:21-05:00", "utc": "2011-10-08T19:19:21Z", "ms": 1318101561319.079 }, "end": { "local": "2011-10-09T16:22:30-05:00", "utc": "2011-10-09T21:22:30Z", "ms": 1318195350491.5781 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2011-10-08T14:19:21-05:00", "utc": "2011-10-08T19:19:21Z", "ms": 1318101561319.079 }, "end": { "local": "2011-10-09T16:22:30-05:00", "utc": "2011-10-09T21:22:30Z", "ms": 1318195350491.5781 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-10-08", "window": { "start": { "local": "2011-10-08T18:20:36-05:00", "utc": "2011-10-08T23:20:36Z", "ms": 1318116035991.1401 }, "end": { "local": "2011-10-08T20:01:21-05:00", "utc": "2011-10-09T01:01:21Z", "ms": 1318122080708.5718 } }, "covered_min": 101, "window_min": 101, "qualifies": true }, { "local_date": "2011-10-09", "window": { "start": { "local": "2011-10-09T18:18:57-05:00", "utc": "2011-10-09T23:18:57Z", "ms": 1318202336794.0483 }, "end": { "local": "2011-10-09T20:00:04-05:00", "utc": "2011-10-10T01:00:04Z", "ms": 1318208403587.6284 } }, "covered_min": 0, "window_min": 101, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:19 on Sat 8 Oct to 16:23 on Sun 9 Oct.", "fact": "2011-10-08T19:19:21Z → 2011-10-09T21:22:30Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:21–20:01 on the 8th, 18:19–20:00 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 101 of 101 minutes on the 8th and 0 of 101 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6986 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2011: Saturday 8 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": "2011-10-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-08", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2011 falls on Saturday 8 October. Trayodaśī runs from 14:19 on Sat 8 Oct to 16:23 on Sun 9 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-10-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33151, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-10-15T04:35:29-05:00", "utc": "2011-10-15T09:35:29Z", "ms": 1318671329001.6226 }, "end": { "local": "2011-10-16T06:47:36-05:00", "utc": "2011-10-16T11:47:36Z", "ms": 1318765656350.4275 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-15T04:35:29-05:00", "utc": "2011-10-15T09:35:29Z", "ms": 1318671329001.6226 }, "end": { "local": "2011-10-16T06:47:36-05:00", "utc": "2011-10-16T11:47:36Z", "ms": 1318765656350.4275 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-10-14", "window": { "start": { "local": "2011-10-14T19:22:58-05:00", "utc": "2011-10-15T00:22:58Z", "ms": 1318638178054.3396 }, "end": { "local": "2011-10-14T19:22:58-05:00", "utc": "2011-10-15T00:22:58Z", "ms": 1318638178054.3396 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-10-15", "window": { "start": { "local": "2011-10-15T20:04:11-05:00", "utc": "2011-10-16T01:04:11Z", "ms": 1318727050682.954 }, "end": { "local": "2011-10-15T20:04:11-05:00", "utc": "2011-10-16T01:04:11Z", "ms": 1318727050682.954 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:35 on Sat 15 Oct to 06:48 on Sun 16 Oct.", "fact": "2011-10-15T09:35:29Z → 2011-10-16T11:47:36Z" }, { "step": "kaala", "text": "Moonrise is at 19:23 on the 14th and 20:04 on the 15th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 14th and is on the 15th.", "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 33151 s" }, { "step": "ruling", "text": "Karaka Caturthī, Chicago, 2011: Saturday 15 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "karaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 4 Karaka caturthi (current at moon-rise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-10-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-15", "confidence": "determinate" } ], "quote": "In Chicago, Karaka Caturthī (Karwa Chauth) 2011 falls on Saturday 15 October. Caturthī runs from 04:35 on Sat 15 Oct to 06:48 on Sun 16 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/sankashta-chaturthi?on=2011-10-15", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33151, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-10-15T04:35:29-05:00", "utc": "2011-10-15T09:35:29Z", "ms": 1318671329001.6226 }, "end": { "local": "2011-10-16T06:47:36-05:00", "utc": "2011-10-16T11:47:36Z", "ms": 1318765656350.4275 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-15T04:35:29-05:00", "utc": "2011-10-15T09:35:29Z", "ms": 1318671329001.6226 }, "end": { "local": "2011-10-16T06:47:36-05:00", "utc": "2011-10-16T11:47:36Z", "ms": 1318765656350.4275 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-10-14", "window": { "start": { "local": "2011-10-14T19:22:58-05:00", "utc": "2011-10-15T00:22:58Z", "ms": 1318638178054.3396 }, "end": { "local": "2011-10-14T19:22:58-05:00", "utc": "2011-10-15T00:22:58Z", "ms": 1318638178054.3396 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-10-15", "window": { "start": { "local": "2011-10-15T20:04:11-05:00", "utc": "2011-10-16T01:04:11Z", "ms": 1318727050682.954 }, "end": { "local": "2011-10-15T20:04:11-05:00", "utc": "2011-10-16T01:04:11Z", "ms": 1318727050682.954 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:35 on Sat 15 Oct to 06:48 on Sun 16 Oct.", "fact": "2011-10-15T09:35:29Z → 2011-10-16T11:47:36Z" }, { "step": "kaala", "text": "Moonrise is at 19:23 on the 14th and 20:04 on the 15th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 14th and is on the 15th.", "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 33151 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2011: Saturday 15 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": "2011-10-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-15", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2011 falls on Saturday 15 October. Caturthī runs from 04:35 on Sat 15 Oct to 06:48 on Sun 16 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/sankashta-chaturthi?on=2011-10-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37839, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2011-10-19T10:29:28-05:00", "utc": "2011-10-19T15:29:28Z", "ms": 1319038168119.8406 }, "end": { "local": "2011-10-20T10:19:18-05:00", "utc": "2011-10-20T15:19:18Z", "ms": 1319123958368.2888 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-19T10:29:28-05:00", "utc": "2011-10-19T15:29:28Z", "ms": 1319038168119.8406 }, "end": { "local": "2011-10-20T10:19:18-05:00", "utc": "2011-10-20T15:19:18Z", "ms": 1319123958368.2888 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-10-18", "window": { "start": { "local": "2011-10-18T22:44:46-05:00", "utc": "2011-10-19T03:44:46Z", "ms": 1318995885721.804 }, "end": { "local": "2011-10-18T22:44:46-05:00", "utc": "2011-10-19T03:44:46Z", "ms": 1318995885721.804 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-10-19", "window": { "start": { "local": "2011-10-19T23:48:39-05:00", "utc": "2011-10-20T04:48:39Z", "ms": 1319086119456.2346 }, "end": { "local": "2011-10-19T23:48:39-05:00", "utc": "2011-10-20T04:48:39Z", "ms": 1319086119456.2346 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 10:29 on Wed 19 Oct to 10:19 on Thu 20 Oct.", "fact": "2011-10-19T15:29:28Z → 2011-10-20T15:19:18Z" }, { "step": "kaala", "text": "Moonrise is at 22:45 on the 18th and 23:49 on the 19th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 18th and is on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37839 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Chicago, 2011: Wednesday 19 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ahoyi-ashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Ahoyi astami (Gujerat) (current at moonrise), Karastami (Maharashtra). If occurs on two successive days, it is to be observed on the second day." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-19", "confidence": "determinate" } ], "quote": "In Chicago, Ahoyī Aṣṭamī 2011 falls on Wednesday 19 October. Aṣṭamī runs from 10:29 on Wed 19 Oct to 10:19 on Thu 20 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-10-22", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1415, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-10-22T07:34:35-05:00", "utc": "2011-10-22T12:34:35Z", "ms": 1319286874733.8296 }, "end": { "local": "2011-10-23T05:06:00-05:00", "utc": "2011-10-23T10:06:00Z", "ms": 1319364359738.9517 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-22T07:34:35-05:00", "utc": "2011-10-22T12:34:35Z", "ms": 1319286874733.8296 }, "end": { "local": "2011-10-23T05:06:00-05:00", "utc": "2011-10-23T10:06:00Z", "ms": 1319364359738.9517 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-10-22", "window": { "start": { "local": "2011-10-22T07:10:59-05:00", "utc": "2011-10-22T12:10:59Z", "ms": 1319285459465.3 }, "end": { "local": "2011-10-22T07:10:59-05:00", "utc": "2011-10-22T12:10:59Z", "ms": 1319285459465.3 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-10-23", "window": { "start": { "local": "2011-10-23T07:12:10-05:00", "utc": "2011-10-23T12:12:10Z", "ms": 1319371930140.1233 }, "end": { "local": "2011-10-23T07:12:10-05:00", "utc": "2011-10-23T12:12:10Z", "ms": 1319371930140.1233 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:35 on Sat 22 Oct to 05:06 on Sun 23 Oct.", "fact": "2011-10-22T12:34:35Z → 2011-10-23T10:06:00Z" }, { "step": "kaala", "text": "Sunrise is at 07:11 on the 22nd and 07:12 on the 23rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 22nd and is not on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 1415 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Chicago, 2011: Saturday 22 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": "2011-10-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-22", "confidence": "determinate" } ], "quote": "In Chicago, Ramā Ekādaśī 2011 falls on Saturday 22 October. Ekādaśī runs from 07:35 on Sat 22 Oct to 05:06 on Sun 23 Oct, and is current at sunrise on neither day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-10-22", "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/2011/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22730, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2011-10-23T05:06:00-05:00", "utc": "2011-10-23T10:06:00Z", "ms": 1319364359738.9517 }, "end": { "local": "2011-10-24T02:02:07-05:00", "utc": "2011-10-24T07:02:07Z", "ms": 1319439727191.6013 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-23T05:06:00-05:00", "utc": "2011-10-23T10:06:00Z", "ms": 1319364359738.9517 }, "end": { "local": "2011-10-24T02:02:07-05:00", "utc": "2011-10-24T07:02:07Z", "ms": 1319439727191.6013 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-10-22", "window": { "start": { "local": "2011-10-22T17:58:35-05:00", "utc": "2011-10-22T22:58:35Z", "ms": 1319324314756.2537 }, "end": { "local": "2011-10-22T19:44:23-05:00", "utc": "2011-10-23T00:44:23Z", "ms": 1319330663474.103 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2011-10-23", "window": { "start": { "local": "2011-10-23T17:57:07-05:00", "utc": "2011-10-23T22:57:07Z", "ms": 1319410627202.0586 }, "end": { "local": "2011-10-23T19:43:17-05:00", "utc": "2011-10-24T00:43:17Z", "ms": 1319416997060.184 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 05:06 on Sun 23 Oct to 02:02 on Mon 24 Oct.", "fact": "2011-10-23T10:06:00Z → 2011-10-24T07:02:07Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:59–19:44 on the 22nd, 17:57–19:43 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 0 of 106 minutes on the 22nd and 106 of 106 on the 23rd.", "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 22730 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Chicago, 2011: Sunday 23 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-23", "confidence": "determinate" } ], "quote": "In Chicago, Govatsa Dvādaśī (Vasu Baras) 2011 falls on Sunday 23 October. Dvādaśī runs from 05:06 on Sun 23 Oct to 02:02 on Mon 24 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10196, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-10-24T02:02:07-05:00", "utc": "2011-10-24T07:02:07Z", "ms": 1319439727191.6013 }, "end": { "local": "2011-10-24T22:32:08-05:00", "utc": "2011-10-25T03:32:08Z", "ms": 1319513528067.175 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-24T02:02:07-05:00", "utc": "2011-10-24T07:02:07Z", "ms": 1319439727191.6013 }, "end": { "local": "2011-10-24T22:32:08-05:00", "utc": "2011-10-25T03:32:08Z", "ms": 1319513528067.175 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-10-23", "window": { "start": { "local": "2011-10-23T17:57:07-05:00", "utc": "2011-10-23T22:57:07Z", "ms": 1319410627202.0586 }, "end": { "local": "2011-10-23T19:43:17-05:00", "utc": "2011-10-24T00:43:17Z", "ms": 1319416997060.184 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2011-10-24", "window": { "start": { "local": "2011-10-24T17:55:41-05:00", "utc": "2011-10-24T22:55:41Z", "ms": 1319496940747.2617 }, "end": { "local": "2011-10-24T19:42:12-05:00", "utc": "2011-10-25T00:42:12Z", "ms": 1319503331640.6357 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:02 on Mon 24 Oct to 22:32 on Mon 24 Oct.", "fact": "2011-10-24T07:02:07Z → 2011-10-25T03:32:08Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:57–19:43 on the 23rd, 17:56–19:42 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 106 minutes on the 23rd and 107 of 107 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10196 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Chicago, 2011: Monday 24 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dipadana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 13 Yama dipadana (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-24", "confidence": "determinate" } ], "quote": "In Chicago, Yama Dīpadāna 2011 falls on Monday 24 October. Trayodaśī runs from 02:02 on Mon 24 Oct to 22:32 on Mon 24 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/pradosha-vrata?on=2011-10-24", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10196, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-10-24T02:02:07-05:00", "utc": "2011-10-24T07:02:07Z", "ms": 1319439727191.6013 }, "end": { "local": "2011-10-24T22:32:08-05:00", "utc": "2011-10-25T03:32:08Z", "ms": 1319513528067.175 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-24T02:02:07-05:00", "utc": "2011-10-24T07:02:07Z", "ms": 1319439727191.6013 }, "end": { "local": "2011-10-24T22:32:08-05:00", "utc": "2011-10-25T03:32:08Z", "ms": 1319513528067.175 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-10-23", "window": { "start": { "local": "2011-10-23T17:57:07-05:00", "utc": "2011-10-23T22:57:07Z", "ms": 1319410627202.0586 }, "end": { "local": "2011-10-23T19:43:17-05:00", "utc": "2011-10-24T00:43:17Z", "ms": 1319416997060.184 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2011-10-24", "window": { "start": { "local": "2011-10-24T17:55:41-05:00", "utc": "2011-10-24T22:55:41Z", "ms": 1319496940747.2617 }, "end": { "local": "2011-10-24T19:42:12-05:00", "utc": "2011-10-25T00:42:12Z", "ms": 1319503331640.6357 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:02 on Mon 24 Oct to 22:32 on Mon 24 Oct.", "fact": "2011-10-24T07:02:07Z → 2011-10-25T03:32:08Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:57–19:43 on the 23rd, 17:56–19:42 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 106 minutes on the 23rd and 107 of 107 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10196 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2011: Monday 24 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": "2011-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-24", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2011 falls on Monday 24 October. Trayodaśī runs from 02:02 on Mon 24 Oct to 22:32 on Mon 24 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-10-24", "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/2011/shivaratri?on=2011-10-24", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5939, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-10-24T22:32:08-05:00", "utc": "2011-10-25T03:32:08Z", "ms": 1319513528067.175 }, "end": { "local": "2011-10-25T18:46:23-05:00", "utc": "2011-10-25T23:46:23Z", "ms": 1319586383193.4124 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-24T22:32:08-05:00", "utc": "2011-10-25T03:32:08Z", "ms": 1319513528067.175 }, "end": { "local": "2011-10-25T18:46:23-05:00", "utc": "2011-10-25T23:46:23Z", "ms": 1319586383193.4124 } }, "kaala": "nishita", "days": [ { "local_date": "2011-10-24", "window": { "start": { "local": "2011-10-25T00:11:07-05:00", "utc": "2011-10-25T05:11:07Z", "ms": 1319519466597.414 }, "end": { "local": "2011-10-25T00:59:07-05:00", "utc": "2011-10-25T05:59:07Z", "ms": 1319522346597.414 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-10-25", "window": { "start": { "local": "2011-10-26T00:11:00-05:00", "utc": "2011-10-26T05:11:00Z", "ms": 1319605859739.912 }, "end": { "local": "2011-10-26T00:59:00-05:00", "utc": "2011-10-26T05:59:00Z", "ms": 1319608739739.912 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:32 on Mon 24 Oct to 18:46 on Tue 25 Oct.", "fact": "2011-10-25T03:32:08Z → 2011-10-25T23:46:23Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:11–00:59 on the 24th, 00:11–00:59 on the 25th.", "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 24th and 0 of 48 on the 25th.", "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 5939 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2011: Monday 24 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": "2011-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-24", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2011 falls on Monday 24 October. Caturdaśī runs from 22:32 on Mon 24 Oct to 18:46 on Tue 25 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/shivaratri?on=2011-10-24", "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/2011/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24953, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-10-24T22:32:08-05:00", "utc": "2011-10-25T03:32:08Z", "ms": 1319513528067.175 }, "end": { "local": "2011-10-25T18:46:23-05:00", "utc": "2011-10-25T23:46:23Z", "ms": 1319586383193.4124 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-24T22:32:08-05:00", "utc": "2011-10-25T03:32:08Z", "ms": 1319513528067.175 }, "end": { "local": "2011-10-25T18:46:23-05:00", "utc": "2011-10-25T23:46:23Z", "ms": 1319586383193.4124 } }, "kaala": "arunodaya", "days": [ { "local_date": "2011-10-25", "window": { "start": { "local": "2011-10-25T05:28:02-05:00", "utc": "2011-10-25T10:28:02Z", "ms": 1319538481554.1924 }, "end": { "local": "2011-10-25T07:14:32-05:00", "utc": "2011-10-25T12:14:32Z", "ms": 1319544872447.5664 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "2011-10-26", "window": { "start": { "local": "2011-10-26T05:28:52-05:00", "utc": "2011-10-26T10:28:52Z", "ms": 1319624932237.696 }, "end": { "local": "2011-10-26T07:15:44-05:00", "utc": "2011-10-26T12:15:44Z", "ms": 1319631344055.072 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:32 on Mon 24 Oct to 18:46 on Tue 25 Oct.", "fact": "2011-10-25T03:32:08Z → 2011-10-25T23:46:23Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:28–07:15 on the 25th, 05:29–07:16 on the 26th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 107 of 107 minutes on the 25th and 0 of 107 on the 26th.", "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 24953 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Chicago, 2011: Tuesday 25 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naraka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Naraka caturdasi (covering a period of 4 ghatikas before sunrise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "arunodaya", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-10-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-25", "confidence": "determinate" } ], "quote": "In Chicago, Naraka Caturdaśī (Choti Diwali) 2011 falls on Tuesday 25 October. Caturdaśī runs from 22:32 on Mon 24 Oct to 18:46 on Tue 25 Oct and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3128, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2011-10-25T18:46:23-05:00", "utc": "2011-10-25T23:46:23Z", "ms": 1319586383193.4124 }, "end": { "local": "2011-10-26T14:55:48-05:00", "utc": "2011-10-26T19:55:48Z", "ms": 1319658947648.8557 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-25T18:46:23-05:00", "utc": "2011-10-25T23:46:23Z", "ms": 1319586383193.4124 }, "end": { "local": "2011-10-26T14:55:48-05:00", "utc": "2011-10-26T19:55:48Z", "ms": 1319658947648.8557 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-10-25", "window": { "start": { "local": "2011-10-25T17:54:15-05:00", "utc": "2011-10-25T22:54:15Z", "ms": 1319583255424.752 }, "end": { "local": "2011-10-25T19:41:07-05:00", "utc": "2011-10-26T00:41:07Z", "ms": 1319589667242.128 } }, "covered_min": 55, "window_min": 107, "qualifies": true }, { "local_date": "2011-10-26", "window": { "start": { "local": "2011-10-26T17:52:51-05:00", "utc": "2011-10-26T22:52:51Z", "ms": 1319669571266.4329 }, "end": { "local": "2011-10-26T19:40:04-05:00", "utc": "2011-10-27T00:40:04Z", "ms": 1319676003890.1821 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 18:46 on Tue 25 Oct to 14:56 on Wed 26 Oct.", "fact": "2011-10-25T23:46:23Z → 2011-10-26T19:55:48Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:54–19:41 on the 25th, 17:53–19:40 on the 26th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 55 of 107 minutes on the 25th and 0 of 107 on the 26th.", "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 3128 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Chicago, 2011: Tuesday 25 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "diwali-lakshmi-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-10-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-25", "confidence": "determinate" } ], "quote": "In Chicago, Lakṣmī Pūjā (Diwali) 2011 falls on Tuesday 25 October. Amāvasyā runs from 18:46 on Tue 25 Oct to 14:56 on Wed 26 Oct and covers 55 of 107 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19477, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2011-10-25T18:46:23-05:00", "utc": "2011-10-25T23:46:23Z", "ms": 1319586383193.4124 }, "end": { "local": "2011-10-26T14:55:48-05:00", "utc": "2011-10-26T19:55:48Z", "ms": 1319658947648.8557 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-25T18:46:23-05:00", "utc": "2011-10-25T23:46:23Z", "ms": 1319586383193.4124 }, "end": { "local": "2011-10-26T14:55:48-05:00", "utc": "2011-10-26T19:55:48Z", "ms": 1319658947648.8557 } }, "kaala": "nishita", "days": [ { "local_date": "2011-10-25", "window": { "start": { "local": "2011-10-26T00:11:00-05:00", "utc": "2011-10-26T05:11:00Z", "ms": 1319605859739.912 }, "end": { "local": "2011-10-26T00:59:00-05:00", "utc": "2011-10-26T05:59:00Z", "ms": 1319608739739.912 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-10-26", "window": { "start": { "local": "2011-10-27T00:10:54-05:00", "utc": "2011-10-27T05:10:54Z", "ms": 1319692253605.4932 }, "end": { "local": "2011-10-27T00:58:54-05:00", "utc": "2011-10-27T05:58:54Z", "ms": 1319695133605.4932 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 18:46 on Tue 25 Oct to 14:56 on Wed 26 Oct.", "fact": "2011-10-25T23:46:23Z → 2011-10-26T19:55:48Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:11–00:59 on the 25th, 00:11–00:59 on the 26th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 48 of 48 minutes on the 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 night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19477 s" }, { "step": "ruling", "text": "Kālī Pūjā, Chicago, 2011: Tuesday 25 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-10-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-25", "confidence": "determinate" } ], "quote": "In Chicago, Kālī Pūjā 2011 falls on Tuesday 25 October. Amāvasyā runs from 18:46 on Tue 25 Oct to 14:56 on Wed 26 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10624, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2011-10-26T14:55:48-05:00", "utc": "2011-10-26T19:55:48Z", "ms": 1319658947648.8557 }, "end": { "local": "2011-10-27T11:11:22-05:00", "utc": "2011-10-27T16:11:22Z", "ms": 1319731881680.5967 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-26T14:55:48-05:00", "utc": "2011-10-26T19:55:48Z", "ms": 1319658947648.8557 }, "end": { "local": "2011-10-27T11:11:22-05:00", "utc": "2011-10-27T16:11:22Z", "ms": 1319731881680.5967 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-10-26", "window": { "start": { "local": "2011-10-26T17:52:51-05:00", "utc": "2011-10-26T22:52:51Z", "ms": 1319669571266.4329 }, "end": { "local": "2011-10-26T19:40:04-05:00", "utc": "2011-10-27T00:40:04Z", "ms": 1319676003890.1821 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "2011-10-27", "window": { "start": { "local": "2011-10-27T17:51:28-05:00", "utc": "2011-10-27T22:51:28Z", "ms": 1319755888303.7913 }, "end": { "local": "2011-10-27T19:39:02-05:00", "utc": "2011-10-28T00:39:02Z", "ms": 1319762341609.7168 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 14:56 on Wed 26 Oct to 11:11 on Thu 27 Oct.", "fact": "2011-10-26T19:55:48Z → 2011-10-27T16:11:22Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:53–19:40 on the 26th, 17:51–19:39 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 107 of 107 minutes on the 26th and 0 of 108 on the 27th.", "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 10624 s" }, { "step": "ruling", "text": "Bali Pūjā, Chicago, 2011: Wednesday 26 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-10-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-26", "confidence": "determinate" } ], "quote": "In Chicago, Bali Pūjā 2011 falls on Wednesday 26 October. Pratipadā runs from 14:56 on Wed 26 Oct to 11:11 on Thu 27 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3530, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2011-10-26T14:55:48-05:00", "utc": "2011-10-26T19:55:48Z", "ms": 1319658947648.8557 }, "end": { "local": "2011-10-27T11:11:22-05:00", "utc": "2011-10-27T16:11:22Z", "ms": 1319731881680.5967 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-26T14:55:48-05:00", "utc": "2011-10-26T19:55:48Z", "ms": 1319658947648.8557 }, "end": { "local": "2011-10-27T11:11:22-05:00", "utc": "2011-10-27T16:11:22Z", "ms": 1319731881680.5967 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-10-26", "window": { "start": { "local": "2011-10-26T12:10:18-05:00", "utc": "2011-10-26T17:10:18Z", "ms": 1319649017660.7524 }, "end": { "local": "2011-10-26T12:58:18-05:00", "utc": "2011-10-26T17:58:18Z", "ms": 1319651897660.7524 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-10-27", "window": { "start": { "local": "2011-10-27T12:10:12-05:00", "utc": "2011-10-27T17:10:12Z", "ms": 1319735412124.1724 }, "end": { "local": "2011-10-27T12:58:12-05:00", "utc": "2011-10-27T17:58:12Z", "ms": 1319738292124.1724 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 14:56 on Wed 26 Oct to 11:11 on Thu 27 Oct.", "fact": "2011-10-26T19:55:48Z → 2011-10-27T16:11:22Z" }, { "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": "Pratipadā 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. 104" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: purvaviddha → second-day · margin 3530 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Chicago, 2011: Thursday 27 October.", "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": "2011-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-27", "confidence": "determinate" } ], "quote": "In Chicago, Govardhana Pūjā 2011 falls on Thursday 27 October. Pratipadā runs from 14:56 on Wed 26 Oct to 11:11 on Thu 27 Oct, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3530, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2011-10-27T11:11:22-05:00", "utc": "2011-10-27T16:11:22Z", "ms": 1319731881680.5967 }, "end": { "local": "2011-10-28T07:43:45-05:00", "utc": "2011-10-28T12:43:45Z", "ms": 1319805824871.079 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-27T11:11:22-05:00", "utc": "2011-10-27T16:11:22Z", "ms": 1319731881680.5967 }, "end": { "local": "2011-10-28T07:43:45-05:00", "utc": "2011-10-28T12:43:45Z", "ms": 1319805824871.079 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-10-27", "window": { "start": { "local": "2011-10-27T12:10:12-05:00", "utc": "2011-10-27T17:10:12Z", "ms": 1319735412124.1724 }, "end": { "local": "2011-10-27T12:58:12-05:00", "utc": "2011-10-27T17:58:12Z", "ms": 1319738292124.1724 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-10-28", "window": { "start": { "local": "2011-10-28T12:10:07-05:00", "utc": "2011-10-28T17:10:07Z", "ms": 1319821807333.4277 }, "end": { "local": "2011-10-28T12:58:07-05:00", "utc": "2011-10-28T17:58:07Z", "ms": 1319824687333.4277 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 11:11 on Thu 27 Oct to 07:44 on Fri 28 Oct.", "fact": "2011-10-27T16:11:22Z → 2011-10-28T12:43:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:10–12:58 on the 27th, 12:10–12:58 on the 28th.", "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 27th and 0 of 48 on the 28th.", "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 3530 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Chicago, 2011: Thursday 27 October.", "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": "2011-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-27", "confidence": "determinate" } ], "quote": "In Chicago, Yama Dvitīyā (Bhai Dooj) 2011 falls on Thursday 27 October. Dvitīyā runs from 11:11 on Thu 27 Oct to 07:44 on Fri 28 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1375, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2011-10-26T14:55:48-05:00", "utc": "2011-10-26T19:55:48Z", "ms": 1319658947648.8557 }, "end": { "local": "2011-10-27T11:11:22-05:00", "utc": "2011-10-27T16:11:22Z", "ms": 1319731881680.5967 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-26T14:55:48-05:00", "utc": "2011-10-26T19:55:48Z", "ms": 1319658947648.8557 }, "end": { "local": "2011-10-27T11:11:22-05:00", "utc": "2011-10-27T16:11:22Z", "ms": 1319731881680.5967 } }, "kaala": "purvahna", "days": [ { "local_date": "2011-10-26", "window": { "start": { "local": "2011-10-26T07:15:44-05:00", "utc": "2011-10-26T12:15:44Z", "ms": 1319631344055.072 }, "end": { "local": "2011-10-26T10:48:06-05:00", "utc": "2011-10-26T15:48:06Z", "ms": 1319644086458.859 } }, "covered_min": 0, "window_min": 212, "qualifies": false }, { "local_date": "2011-10-27", "window": { "start": { "local": "2011-10-27T07:16:56-05:00", "utc": "2011-10-27T12:16:56Z", "ms": 1319717815944.5532 }, "end": { "local": "2011-10-27T10:48:27-05:00", "utc": "2011-10-27T15:48:27Z", "ms": 1319730506730.9658 } }, "covered_min": 212, "window_min": 212, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 14:56 on Wed 26 Oct to 11:11 on Thu 27 Oct.", "fact": "2011-10-26T19:55:48Z → 2011-10-27T16:11:22Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 07:16–10:48 on the 26th, 07:17–10:48 on the 27th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 0 of 212 minutes on the 26th and 212 of 212 on the 27th.", "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 1375 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Chicago, 2011: Thursday 27 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dyuta-pratipad", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-27", "confidence": "determinate" } ], "quote": "In Chicago, Dyūta Pratipad 2011 falls on Thursday 27 October. Pratipadā runs from 14:56 on Wed 26 Oct to 11:11 on Thu 27 Oct and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26834, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-10-29T04:42:50-05:00", "utc": "2011-10-29T09:42:50Z", "ms": 1319881369619.6367 }, "end": { "local": "2011-10-30T02:17:11-05:00", "utc": "2011-10-30T07:17:11Z", "ms": 1319959030813.1714 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-29T04:42:50-05:00", "utc": "2011-10-29T09:42:50Z", "ms": 1319881369619.6367 }, "end": { "local": "2011-10-30T02:17:11-05:00", "utc": "2011-10-30T07:17:11Z", "ms": 1319959030813.1714 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-10-29", "window": { "start": { "local": "2011-10-29T12:10:03-05:00", "utc": "2011-10-29T17:10:03Z", "ms": 1319908203295.3708 }, "end": { "local": "2011-10-29T12:58:03-05:00", "utc": "2011-10-29T17:58:03Z", "ms": 1319911083295.3708 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-10-30", "window": { "start": { "local": "2011-10-30T12:10:00-05:00", "utc": "2011-10-30T17:10:00Z", "ms": 1319994600017.161 }, "end": { "local": "2011-10-30T12:58:00-05:00", "utc": "2011-10-30T17:58:00Z", "ms": 1319997480017.161 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:43 on Sat 29 Oct to 02:17 on Sun 30 Oct.", "fact": "2011-10-29T09:42:50Z → 2011-10-30T07:17:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:10–12:58 on the 29th, 12:10–12:58 on the 30th.", "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 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 midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26834 s" }, { "step": "ruling", "text": "Nāga Caturthī, Chicago, 2011: Saturday 29 October.", "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": "2011-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-29", "confidence": "determinate" } ], "quote": "In Chicago, Nāga Caturthī 2011 falls on Saturday 29 October. Caturthī runs from 04:43 on Sat 29 Oct to 02:17 on Sun 30 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/vinayaka-chaturthi?on=2011-10-29", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26834, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-10-29T04:42:50-05:00", "utc": "2011-10-29T09:42:50Z", "ms": 1319881369619.6367 }, "end": { "local": "2011-10-30T02:17:11-05:00", "utc": "2011-10-30T07:17:11Z", "ms": 1319959030813.1714 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-29T04:42:50-05:00", "utc": "2011-10-29T09:42:50Z", "ms": 1319881369619.6367 }, "end": { "local": "2011-10-30T02:17:11-05:00", "utc": "2011-10-30T07:17:11Z", "ms": 1319959030813.1714 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-10-29", "window": { "start": { "local": "2011-10-29T12:10:03-05:00", "utc": "2011-10-29T17:10:03Z", "ms": 1319908203295.3708 }, "end": { "local": "2011-10-29T12:58:03-05:00", "utc": "2011-10-29T17:58:03Z", "ms": 1319911083295.3708 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-10-30", "window": { "start": { "local": "2011-10-30T12:10:00-05:00", "utc": "2011-10-30T17:10:00Z", "ms": 1319994600017.161 }, "end": { "local": "2011-10-30T12:58:00-05:00", "utc": "2011-10-30T17:58:00Z", "ms": 1319997480017.161 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:43 on Sat 29 Oct to 02:17 on Sun 30 Oct.", "fact": "2011-10-29T09:42:50Z → 2011-10-30T07:17:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:10–12:58 on the 29th, 12:10–12:58 on the 30th.", "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 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26834 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2011: Saturday 29 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": "2011-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-29", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2011 falls on Saturday 29 October. Caturthī runs from 04:43 on Sat 29 Oct to 02:17 on Sun 30 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/vinayaka-chaturthi?on=2011-10-29", "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/2011/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38285, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2011-10-31T00:33:31-05:00", "utc": "2011-10-31T05:33:31Z", "ms": 1320039210791.4739 }, "end": { "local": "2011-10-31T23:36:02-05:00", "utc": "2011-11-01T04:36:02Z", "ms": 1320122162390.1853 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-10-31T00:33:31-05:00", "utc": "2011-10-31T05:33:31Z", "ms": 1320039210791.4739 }, "end": { "local": "2011-10-31T23:36:02-05:00", "utc": "2011-11-01T04:36:02Z", "ms": 1320122162390.1853 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-10-30", "window": { "start": { "local": "2011-10-30T12:10:00-05:00", "utc": "2011-10-30T17:10:00Z", "ms": 1319994600017.161 }, "end": { "local": "2011-10-30T12:58:00-05:00", "utc": "2011-10-30T17:58:00Z", "ms": 1319997480017.161 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-10-31", "window": { "start": { "local": "2011-10-31T12:09:58-05:00", "utc": "2011-10-31T17:09:58Z", "ms": 1320080997506.5015 }, "end": { "local": "2011-10-31T12:57:58-05:00", "utc": "2011-10-31T17:57:58Z", "ms": 1320083877506.5015 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 00:34 on Mon 31 Oct to 23:36 on Mon 31 Oct.", "fact": "2011-10-31T05:33:31Z → 2011-11-01T04:36:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:10–12:58 on the 30th, 12:10–12:58 on the 31st.", "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 30th and 48 of 48 on the 31st.", "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 38285 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Chicago, 2011: Monday 31 October.", "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": "2011-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-10-31", "confidence": "determinate" } ], "quote": "In Chicago, Sūrya Ṣaṣṭhī (Chhath) 2011 falls on Monday 31 October. Ṣaṣṭhī runs from 00:34 on Mon 31 Oct to 23:36 on Mon 31 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37682, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2011-11-01T23:25:57-05:00", "utc": "2011-11-02T04:25:57Z", "ms": 1320207957406.334 }, "end": { "local": "2011-11-03T00:01:11-05:00", "utc": "2011-11-03T05:01:11Z", "ms": 1320296471404.0466 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-11-01T23:25:57-05:00", "utc": "2011-11-02T04:25:57Z", "ms": 1320207957406.334 }, "end": { "local": "2011-11-03T00:01:11-05:00", "utc": "2011-11-03T05:01:11Z", "ms": 1320296471404.0466 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-11-01", "window": { "start": { "local": "2011-11-01T12:09:56-05:00", "utc": "2011-11-01T17:09:56Z", "ms": 1320167395771.668 }, "end": { "local": "2011-11-01T12:57:56-05:00", "utc": "2011-11-01T17:57:56Z", "ms": 1320170275771.668 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-11-02", "window": { "start": { "local": "2011-11-02T12:09:55-05:00", "utc": "2011-11-02T17:09:55Z", "ms": 1320253794821.3203 }, "end": { "local": "2011-11-02T12:57:55-05:00", "utc": "2011-11-02T17:57:55Z", "ms": 1320256674821.3203 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 23:26 on Tue 1 Nov to 00:01 on Thu 3 Nov.", "fact": "2011-11-02T04:25:57Z → 2011-11-03T05:01:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:10–12:58 on the 1st, 12:10–12:58 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 37682 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Chicago, 2011: Wednesday 2 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": "2011-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-02", "confidence": "determinate" } ], "quote": "In Chicago, Gopāṣṭamī 2011 falls on Wednesday 2 November. Aṣṭamī runs from 23:26 on Tue 1 Nov to 00:01 on Thu 3 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22204, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2011-11-03T00:01:11-05:00", "utc": "2011-11-03T05:01:11Z", "ms": 1320296471404.0466 }, "end": { "local": "2011-11-04T01:16:35-05:00", "utc": "2011-11-04T06:16:35Z", "ms": 1320387395306.6467 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-11-03T00:01:11-05:00", "utc": "2011-11-03T05:01:11Z", "ms": 1320296471404.0466 }, "end": { "local": "2011-11-04T01:16:35-05:00", "utc": "2011-11-04T06:16:35Z", "ms": 1320387395306.6467 } }, "kaala": "purvahna", "days": [ { "local_date": "2011-11-03", "window": { "start": { "local": "2011-11-03T07:25:25-05:00", "utc": "2011-11-03T12:25:25Z", "ms": 1320323125484.2068 }, "end": { "local": "2011-11-03T10:51:05-05:00", "utc": "2011-11-03T15:51:05Z", "ms": 1320335464937.6172 } }, "covered_min": 206, "window_min": 206, "qualifies": true }, { "local_date": "2011-11-04", "window": { "start": { "local": "2011-11-04T07:26:39-05:00", "utc": "2011-11-04T12:26:39Z", "ms": 1320409598942.8254 }, "end": { "local": "2011-11-04T10:51:30-05:00", "utc": "2011-11-04T15:51:30Z", "ms": 1320421889853.9607 } }, "covered_min": 0, "window_min": 205, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 00:01 on Thu 3 Nov to 01:17 on Fri 4 Nov.", "fact": "2011-11-03T05:01:11Z → 2011-11-04T06:16:35Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 07:25–10:51 on the 3rd, 07:27–10:51 on the 4th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 206 of 206 minutes on the 3rd and 0 of 205 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one forenoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22204 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Chicago, 2011: Thursday 3 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": "2011-11-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-03", "confidence": "determinate" } ], "quote": "In Chicago, Akṣaya Navamī (Amla Navami) 2011 falls on Thursday 3 November. Navamī runs from 00:01 on Thu 3 Nov to 01:17 on Fri 4 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39200, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2011-11-03T00:01:11-05:00", "utc": "2011-11-03T05:01:11Z", "ms": 1320296471404.0466 }, "end": { "local": "2011-11-04T01:16:35-05:00", "utc": "2011-11-04T06:16:35Z", "ms": 1320387395306.6467 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-11-03T00:01:11-05:00", "utc": "2011-11-03T05:01:11Z", "ms": 1320296471404.0466 }, "end": { "local": "2011-11-04T01:16:35-05:00", "utc": "2011-11-04T06:16:35Z", "ms": 1320387395306.6467 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-11-03", "window": { "start": { "local": "2011-11-03T12:09:55-05:00", "utc": "2011-11-03T17:09:55Z", "ms": 1320340194664.3223 }, "end": { "local": "2011-11-03T12:57:55-05:00", "utc": "2011-11-03T17:57:55Z", "ms": 1320343074664.3223 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-11-04", "window": { "start": { "local": "2011-11-04T12:09:55-05:00", "utc": "2011-11-04T17:09:55Z", "ms": 1320426595309.5283 }, "end": { "local": "2011-11-04T12:57:55-05:00", "utc": "2011-11-04T17:57:55Z", "ms": 1320429475309.5283 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 00:01 on Thu 3 Nov to 01:17 on Fri 4 Nov.", "fact": "2011-11-03T05:01:11Z → 2011-11-04T06:16:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:10–12:58 on the 3rd, 12:10–12:58 on the 4th.", "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 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 39200 s" }, { "step": "ruling", "text": "Durgā Navamī, Chicago, 2011: Thursday 3 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": "2011-11-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-03", "confidence": "determinate" } ], "quote": "In Chicago, Durgā Navamī 2011 falls on Thursday 3 November. Navamī runs from 00:01 on Thu 3 Nov to 01:17 on Fri 4 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-11-05", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7958, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-11-05T03:04:37-05:00", "utc": "2011-11-05T08:04:37Z", "ms": 1320480277443.0125 }, "end": { "local": "2011-11-06T04:16:28-06:00", "utc": "2011-11-06T10:16:28Z", "ms": 1320574588213.6042 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-11-05T03:04:37-05:00", "utc": "2011-11-05T08:04:37Z", "ms": 1320480277443.0125 }, "end": { "local": "2011-11-06T04:16:28-06:00", "utc": "2011-11-06T10:16:28Z", "ms": 1320574588213.6042 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-11-05", "window": { "start": { "local": "2011-11-05T07:27:53-05:00", "utc": "2011-11-05T12:27:53Z", "ms": 1320496072508.1099 }, "end": { "local": "2011-11-05T07:27:53-05:00", "utc": "2011-11-05T12:27:53Z", "ms": 1320496072508.1099 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-11-06", "window": { "start": { "local": "2011-11-06T06:29:06-06:00", "utc": "2011-11-06T12:29:06Z", "ms": 1320582546158.3801 }, "end": { "local": "2011-11-06T06:29:06-06:00", "utc": "2011-11-06T12:29:06Z", "ms": 1320582546158.3801 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:05 on Sat 5 Nov to 04:16 on Sun 6 Nov.", "fact": "2011-11-05T08:04:37Z → 2011-11-06T10:16:28Z" }, { "step": "kaala", "text": "Sunrise is at 07:28 on the 5th and 06:29 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 7958 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Chicago, 2011: Saturday 5 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": "2011-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-05", "confidence": "determinate" } ], "quote": "In Chicago, Prabodhinī Ekādaśī 2011 falls on Saturday 5 November. Ekādaśī runs from 03:05 on Sat 5 Nov to 04:16 on Sun 6 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-11-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-11-07", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26410, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-11-07T06:43:09-06:00", "utc": "2011-11-07T12:43:09Z", "ms": 1320669789469.9639 }, "end": { "local": "2011-11-08T09:16:29-06:00", "utc": "2011-11-08T15:16:29Z", "ms": 1320765388650.3254 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-11-07T06:43:09-06:00", "utc": "2011-11-07T12:43:09Z", "ms": 1320669789469.9639 }, "end": { "local": "2011-11-08T09:16:29-06:00", "utc": "2011-11-08T15:16:29Z", "ms": 1320765388650.3254 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-11-07", "window": { "start": { "local": "2011-11-07T16:37:44-06:00", "utc": "2011-11-07T22:37:44Z", "ms": 1320705464415.5176 }, "end": { "local": "2011-11-07T18:28:55-06:00", "utc": "2011-11-08T00:28:55Z", "ms": 1320712134976.336 } }, "covered_min": 111, "window_min": 111, "qualifies": true }, { "local_date": "2011-11-08", "window": { "start": { "local": "2011-11-08T16:36:39-06:00", "utc": "2011-11-08T22:36:39Z", "ms": 1320791798538.3347 }, "end": { "local": "2011-11-08T18:28:08-06:00", "utc": "2011-11-09T00:28:08Z", "ms": 1320798487717.9475 } }, "covered_min": 0, "window_min": 111, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:43 on Mon 7 Nov to 09:16 on Tue 8 Nov.", "fact": "2011-11-07T12:43:09Z → 2011-11-08T15:16:29Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:38–18:29 on the 7th, 16:37–18:28 on the 8th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 111 of 111 minutes on the 7th and 0 of 111 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26410 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2011: Monday 7 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-11-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-07", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2011 falls on Monday 7 November. Trayodaśī runs from 06:43 on Mon 7 Nov to 09:16 on Tue 8 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-11-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32086, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-11-09T11:49:25-06:00", "utc": "2011-11-09T17:49:25Z", "ms": 1320860964998.4453 }, "end": { "local": "2011-11-10T14:16:07-06:00", "utc": "2011-11-10T20:16:07Z", "ms": 1320956166949.9553 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-11-09T11:49:25-06:00", "utc": "2011-11-09T17:49:25Z", "ms": 1320860964998.4453 }, "end": { "local": "2011-11-10T14:16:07-06:00", "utc": "2011-11-10T20:16:07Z", "ms": 1320956166949.9553 } }, "kaala": "nishita", "days": [ { "local_date": "2011-11-09", "window": { "start": { "local": "2011-11-09T23:10:48-06:00", "utc": "2011-11-10T05:10:48Z", "ms": 1320901847733.0664 }, "end": { "local": "2011-11-09T23:58:48-06:00", "utc": "2011-11-10T05:58:48Z", "ms": 1320904727733.0664 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-11-10", "window": { "start": { "local": "2011-11-10T23:10:53-06:00", "utc": "2011-11-11T05:10:53Z", "ms": 1320988253337.4888 }, "end": { "local": "2011-11-10T23:58:53-06:00", "utc": "2011-11-11T05:58:53Z", "ms": 1320991133337.4888 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:49 on Wed 9 Nov to 14:16 on Thu 10 Nov.", "fact": "2011-11-09T17:49:25Z → 2011-11-10T20:16:07Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:11–23:59 on the 9th, 23:11–23:59 on the 10th.", "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 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32086 s" }, { "step": "ruling", "text": "Rāsayātrā, Chicago, 2011: Wednesday 9 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": "2011-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-09", "confidence": "determinate" } ], "quote": "In Chicago, Rāsayātrā 2011 falls on Wednesday 9 November. Pūrṇimā runs from 11:49 on Wed 9 Nov to 14:16 on Thu 10 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-10", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 526, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-11-09T11:49:25-06:00", "utc": "2011-11-09T17:49:25Z", "ms": 1320860964998.4453 }, "end": { "local": "2011-11-10T14:16:07-06:00", "utc": "2011-11-10T20:16:07Z", "ms": 1320956166949.9553 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2011-11-09T11:49:25-06:00", "utc": "2011-11-09T17:49:25Z", "ms": 1320860964998.4453 }, "end": { "local": "2011-11-10T14:16:07-06:00", "utc": "2011-11-10T20:16:07Z", "ms": 1320956166949.9553 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-11-09", "window": { "start": { "local": "2011-11-09T11:10:11-06:00", "utc": "2011-11-09T17:10:11Z", "ms": 1320858610858.032 }, "end": { "local": "2011-11-09T11:58:11-06:00", "utc": "2011-11-09T17:58:11Z", "ms": 1320861490858.032 } }, "covered_min": 9, "window_min": 48, "qualifies": true }, { "local_date": "2011-11-10", "window": { "start": { "local": "2011-11-10T11:10:16-06:00", "utc": "2011-11-10T17:10:16Z", "ms": 1320945016483.4312 }, "end": { "local": "2011-11-10T11:58:16-06:00", "utc": "2011-11-10T17:58:16Z", "ms": 1320947896483.4312 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:49 on Wed 9 Nov to 14:16 on Thu 10 Nov.", "fact": "2011-11-09T17:49:25Z → 2011-11-10T20:16:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:10–11:58 on the 9th, 11:10–11:58 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 9 of 48 minutes on the 9th and 48 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 526 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Chicago, 2011: Thursday 10 November.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "2011-11-10", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-10", "confidence": "boundary" } ], "quote": "In Chicago, Kārtikī Pūrṇimā 2011 falls on Thursday 10 November. Pūrṇimā runs from 11:49 on Wed 9 Nov to 14:16 on Thu 10 Nov and covers all of madhyāhna that midday. It also reaches the previous midday for 9 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/2011/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/2011/sankashta-chaturthi?on=2011-11-14", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5276, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-11-13T20:09:07-06:00", "utc": "2011-11-14T02:09:07Z", "ms": 1321236546621.2185 }, "end": { "local": "2011-11-14T21:21:33-06:00", "utc": "2011-11-15T03:21:33Z", "ms": 1321327292602.2815 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-11-13T20:09:07-06:00", "utc": "2011-11-14T02:09:07Z", "ms": 1321236546621.2185 }, "end": { "local": "2011-11-14T21:21:33-06:00", "utc": "2011-11-15T03:21:33Z", "ms": 1321327292602.2815 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-11-13", "window": { "start": { "local": "2011-11-13T18:41:11-06:00", "utc": "2011-11-14T00:41:11Z", "ms": 1321231270743.6274 }, "end": { "local": "2011-11-13T18:41:11-06:00", "utc": "2011-11-14T00:41:11Z", "ms": 1321231270743.6274 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-11-14", "window": { "start": { "local": "2011-11-14T19:38:46-06:00", "utc": "2011-11-15T01:38:46Z", "ms": 1321321125854.463 }, "end": { "local": "2011-11-14T19:38:46-06:00", "utc": "2011-11-15T01:38:46Z", "ms": 1321321125854.463 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:09 on Sun 13 Nov to 21:22 on Mon 14 Nov.", "fact": "2011-11-14T02:09:07Z → 2011-11-15T03:21:33Z" }, { "step": "kaala", "text": "Moonrise is at 18:41 on the 13th and 19:39 on the 14th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 13th and is on the 14th.", "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 5276 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2011: Monday 14 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": "2011-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-14", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2011 falls on Monday 14 November. Caturthī runs from 20:09 on Sun 13 Nov to 21:22 on Mon 14 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/sankashta-chaturthi?on=2011-11-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/ekadashi?on=2011-11-21", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24285, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-11-20T16:21:27-06:00", "utc": "2011-11-20T22:21:27Z", "ms": 1321827687413.7168 }, "end": { "local": "2011-11-21T13:32:08-06:00", "utc": "2011-11-21T19:32:08Z", "ms": 1321903927550.7683 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-11-20T16:21:27-06:00", "utc": "2011-11-20T22:21:27Z", "ms": 1321827687413.7168 }, "end": { "local": "2011-11-21T13:32:08-06:00", "utc": "2011-11-21T19:32:08Z", "ms": 1321903927550.7683 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-11-20", "window": { "start": { "local": "2011-11-20T06:46:11-06:00", "utc": "2011-11-20T12:46:11Z", "ms": 1321793170753.1274 }, "end": { "local": "2011-11-20T06:46:11-06:00", "utc": "2011-11-20T12:46:11Z", "ms": 1321793170753.1274 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2011-11-21", "window": { "start": { "local": "2011-11-21T06:47:22-06:00", "utc": "2011-11-21T12:47:22Z", "ms": 1321879642068.0479 }, "end": { "local": "2011-11-21T06:47:22-06:00", "utc": "2011-11-21T12:47:22Z", "ms": 1321879642068.0479 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:21 on Sun 20 Nov to 13:32 on Mon 21 Nov.", "fact": "2011-11-20T22:21:27Z → 2011-11-21T19:32:08Z" }, { "step": "kaala", "text": "Sunrise is at 06:46 on the 20th and 06:47 on the 21st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 20th and is on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24285 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Chicago, 2011: Monday 21 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": "2011-11-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-21", "confidence": "determinate" } ], "quote": "In Chicago, Utpannā Ekādaśī 2011 falls on Monday 21 November. Ekādaśī runs from 16:21 on Sun 20 Nov to 13:32 on Mon 21 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-11-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/pradosha-vrata?on=2011-11-22", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21776, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-11-22T10:21:33-06:00", "utc": "2011-11-22T16:21:33Z", "ms": 1321978893473.7122 }, "end": { "local": "2011-11-23T06:58:07-06:00", "utc": "2011-11-23T12:58:07Z", "ms": 1322053086832.3838 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-11-22T10:21:33-06:00", "utc": "2011-11-22T16:21:33Z", "ms": 1321978893473.7122 }, "end": { "local": "2011-11-23T06:58:07-06:00", "utc": "2011-11-23T12:58:07Z", "ms": 1322053086832.3838 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-11-22", "window": { "start": { "local": "2011-11-22T16:24:29-06:00", "utc": "2011-11-22T22:24:29Z", "ms": 1322000669008.9866 }, "end": { "local": "2011-11-22T18:19:51-06:00", "utc": "2011-11-23T00:19:51Z", "ms": 1322007590899.7854 } }, "covered_min": 115, "window_min": 115, "qualifies": true }, { "local_date": "2011-11-23", "window": { "start": { "local": "2011-11-23T16:23:52-06:00", "utc": "2011-11-23T22:23:52Z", "ms": 1322087032105.7725 }, "end": { "local": "2011-11-23T18:19:28-06:00", "utc": "2011-11-24T00:19:28Z", "ms": 1322093968209.8633 } }, "covered_min": 0, "window_min": 116, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:22 on Tue 22 Nov to 06:58 on Wed 23 Nov.", "fact": "2011-11-22T16:21:33Z → 2011-11-23T12:58:07Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:24–18:20 on the 22nd, 16:24–18:19 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 115 of 115 minutes on the 22nd and 0 of 116 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21776 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2011: Tuesday 22 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": "2011-11-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-22", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2011 falls on Tuesday 22 November. Trayodaśī runs from 10:22 on Tue 22 Nov to 06:58 on Wed 23 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-11-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/shivaratri?on=2011-11-23", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12575, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-11-23T06:58:07-06:00", "utc": "2011-11-23T12:58:07Z", "ms": 1322053086832.3838 }, "end": { "local": "2011-11-24T03:30:58-06:00", "utc": "2011-11-24T09:30:58Z", "ms": 1322127057514.5186 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-11-23T06:58:07-06:00", "utc": "2011-11-23T12:58:07Z", "ms": 1322053086832.3838 }, "end": { "local": "2011-11-24T03:30:58-06:00", "utc": "2011-11-24T09:30:58Z", "ms": 1322127057514.5186 } }, "kaala": "nishita", "days": [ { "local_date": "2011-11-22", "window": { "start": { "local": "2011-11-22T23:13:06-06:00", "utc": "2011-11-23T05:13:06Z", "ms": 1322025186099.4824 }, "end": { "local": "2011-11-23T00:01:06-06:00", "utc": "2011-11-23T06:01:06Z", "ms": 1322028066099.4824 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-11-23", "window": { "start": { "local": "2011-11-23T23:13:22-06:00", "utc": "2011-11-24T05:13:22Z", "ms": 1322111602496.113 }, "end": { "local": "2011-11-24T00:01:22-06:00", "utc": "2011-11-24T06:01:22Z", "ms": 1322114482496.113 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 06:58 on Wed 23 Nov to 03:31 on Thu 24 Nov.", "fact": "2011-11-23T12:58:07Z → 2011-11-24T09:30:58Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:13–00:01 on the 22nd, 23:13–00:01 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 12575 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2011: Wednesday 23 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": "2011-11-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-23", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2011 falls on Wednesday 23 November. Caturdaśī runs from 06:58 on Wed 23 Nov to 03:31 on Thu 24 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/shivaratri?on=2011-11-23", "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/2011/vinayaka-chaturthi?on=2011-11-28", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10019, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-11-27T16:15:56-06:00", "utc": "2011-11-27T22:15:56Z", "ms": 1322432155537.369 }, "end": { "local": "2011-11-28T14:49:22-06:00", "utc": "2011-11-28T20:49:22Z", "ms": 1322513361566.3706 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-11-27T16:15:56-06:00", "utc": "2011-11-27T22:15:56Z", "ms": 1322432155537.369 }, "end": { "local": "2011-11-28T14:49:22-06:00", "utc": "2011-11-28T20:49:22Z", "ms": 1322513361566.3706 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-11-27", "window": { "start": { "local": "2011-11-27T11:14:02-06:00", "utc": "2011-11-27T17:14:02Z", "ms": 1322414042179.1172 }, "end": { "local": "2011-11-27T12:02:02-06:00", "utc": "2011-11-27T18:02:02Z", "ms": 1322416922179.1172 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-11-28", "window": { "start": { "local": "2011-11-28T11:14:23-06:00", "utc": "2011-11-28T17:14:23Z", "ms": 1322500462647.7693 }, "end": { "local": "2011-11-28T12:02:23-06:00", "utc": "2011-11-28T18:02:23Z", "ms": 1322503342647.7693 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:16 on Sun 27 Nov to 14:49 on Mon 28 Nov.", "fact": "2011-11-27T22:15:56Z → 2011-11-28T20:49:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:14–12:02 on the 27th, 11:14–12:02 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 10019 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2011: Monday 28 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": "2011-11-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-28", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2011 falls on Monday 28 November. Caturthī runs from 16:16 on Sun 27 Nov to 14:49 on Mon 28 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/vinayaka-chaturthi?on=2011-11-28", "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/2011/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7551, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2011-11-28T14:49:22-06:00", "utc": "2011-11-28T20:49:22Z", "ms": 1322513361566.3706 }, "end": { "local": "2011-11-29T14:08:35-06:00", "utc": "2011-11-29T20:08:35Z", "ms": 1322597314785.813 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-11-28T14:49:22-06:00", "utc": "2011-11-28T20:49:22Z", "ms": 1322513361566.3706 }, "end": { "local": "2011-11-29T14:08:35-06:00", "utc": "2011-11-29T20:08:35Z", "ms": 1322597314785.813 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-11-28", "window": { "start": { "local": "2011-11-28T11:14:23-06:00", "utc": "2011-11-28T17:14:23Z", "ms": 1322500462647.7693 }, "end": { "local": "2011-11-28T12:02:23-06:00", "utc": "2011-11-28T18:02:23Z", "ms": 1322503342647.7693 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-11-29", "window": { "start": { "local": "2011-11-29T11:14:44-06:00", "utc": "2011-11-29T17:14:44Z", "ms": 1322586883808.2798 }, "end": { "local": "2011-11-29T12:02:44-06:00", "utc": "2011-11-29T18:02:44Z", "ms": 1322589763808.2798 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 14:49 on Mon 28 Nov to 14:09 on Tue 29 Nov.", "fact": "2011-11-28T20:49:22Z → 2011-11-29T20:08:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:14–12:02 on the 28th, 11:15–12:03 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7551 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Chicago, 2011: Tuesday 29 November.", "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": "2011-11-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-29", "confidence": "determinate" } ], "quote": "In Chicago, Nāga Pañcamī (Mārgaśīrṣa) 2011 falls on Tuesday 29 November. Pañcamī runs from 14:49 on Mon 28 Nov to 14:09 on Tue 29 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7551, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2011-11-29T14:08:35-06:00", "utc": "2011-11-29T20:08:35Z", "ms": 1322597314785.813 }, "end": { "local": "2011-11-30T14:15:45-06:00", "utc": "2011-11-30T20:15:45Z", "ms": 1322684145166.1348 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-11-29T14:08:35-06:00", "utc": "2011-11-29T20:08:35Z", "ms": 1322597314785.813 }, "end": { "local": "2011-11-30T14:15:45-06:00", "utc": "2011-11-30T20:15:45Z", "ms": 1322684145166.1348 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-11-29", "window": { "start": { "local": "2011-11-29T11:14:44-06:00", "utc": "2011-11-29T17:14:44Z", "ms": 1322586883808.2798 }, "end": { "local": "2011-11-29T12:02:44-06:00", "utc": "2011-11-29T18:02:44Z", "ms": 1322589763808.2798 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-11-30", "window": { "start": { "local": "2011-11-30T11:15:06-06:00", "utc": "2011-11-30T17:15:06Z", "ms": 1322673305639.4531 }, "end": { "local": "2011-11-30T12:03:06-06:00", "utc": "2011-11-30T18:03:06Z", "ms": 1322676185639.4531 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 14:09 on Tue 29 Nov to 14:16 on Wed 30 Nov.", "fact": "2011-11-29T20:08:35Z → 2011-11-30T20:15:45Z" }, { "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": "Ṣaṣṭhī 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: paraviddha → only-day · margin 7551 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Chicago, 2011: Wednesday 30 November.", "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": "2011-11-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-30", "confidence": "determinate" } ], "quote": "In Chicago, Campā Ṣaṣṭhī 2011 falls on Wednesday 30 November. Ṣaṣṭhī runs from 14:09 on Tue 29 Nov to 14:16 on Wed 30 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-11-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7551, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2011-11-29T14:08:35-06:00", "utc": "2011-11-29T20:08:35Z", "ms": 1322597314785.813 }, "end": { "local": "2011-11-30T14:15:45-06:00", "utc": "2011-11-30T20:15:45Z", "ms": 1322684145166.1348 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-11-29T14:08:35-06:00", "utc": "2011-11-29T20:08:35Z", "ms": 1322597314785.813 }, "end": { "local": "2011-11-30T14:15:45-06:00", "utc": "2011-11-30T20:15:45Z", "ms": 1322684145166.1348 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-11-29", "window": { "start": { "local": "2011-11-29T11:14:44-06:00", "utc": "2011-11-29T17:14:44Z", "ms": 1322586883808.2798 }, "end": { "local": "2011-11-29T12:02:44-06:00", "utc": "2011-11-29T18:02:44Z", "ms": 1322589763808.2798 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-11-30", "window": { "start": { "local": "2011-11-30T11:15:06-06:00", "utc": "2011-11-30T17:15:06Z", "ms": 1322673305639.4531 }, "end": { "local": "2011-11-30T12:03:06-06:00", "utc": "2011-11-30T18:03:06Z", "ms": 1322676185639.4531 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 14:09 on Tue 29 Nov to 14:16 on Wed 30 Nov.", "fact": "2011-11-29T20:08:35Z → 2011-11-30T20:15:45Z" }, { "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": "Ṣaṣṭhī 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: purvaviddha → only-day · margin 7551 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Chicago, 2011: Wednesday 30 November.", "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": "2011-11-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-11-30", "confidence": "determinate" } ], "quote": "In Chicago, Skanda Ṣaṣṭhī 2011 falls on Wednesday 30 November. Ṣaṣṭhī runs from 14:09 on Tue 29 Nov to 14:16 on Wed 30 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-12-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7960, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2011-11-30T14:15:45-06:00", "utc": "2011-11-30T20:15:45Z", "ms": 1322684145166.1348 }, "end": { "local": "2011-12-01T15:09:28-06:00", "utc": "2011-12-01T21:09:28Z", "ms": 1322773767522.6716 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-11-30T14:15:45-06:00", "utc": "2011-11-30T20:15:45Z", "ms": 1322684145166.1348 }, "end": { "local": "2011-12-01T15:09:28-06:00", "utc": "2011-12-01T21:09:28Z", "ms": 1322773767522.6716 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-11-30", "window": { "start": { "local": "2011-11-30T11:15:06-06:00", "utc": "2011-11-30T17:15:06Z", "ms": 1322673305639.4531 }, "end": { "local": "2011-11-30T12:03:06-06:00", "utc": "2011-11-30T18:03:06Z", "ms": 1322676185639.4531 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2011-12-01", "window": { "start": { "local": "2011-12-01T11:15:28-06:00", "utc": "2011-12-01T17:15:28Z", "ms": 1322759728120.0535 }, "end": { "local": "2011-12-01T12:03:28-06:00", "utc": "2011-12-01T18:03:28Z", "ms": 1322762608120.0535 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 14:16 on Wed 30 Nov to 15:09 on Thu 1 Dec.", "fact": "2011-11-30T20:15:45Z → 2011-12-01T21:09:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:15–12:03 on the 30th, 11:15–12:03 on the 1st.", "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 30th and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 7960 s" }, { "step": "ruling", "text": "Mitra Saptamī, Chicago, 2011: Thursday 1 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": "2011-12-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-12-01", "confidence": "determinate" } ], "quote": "In Chicago, Mitra Saptamī 2011 falls on Thursday 1 December. Saptamī runs from 14:16 on Wed 30 Nov to 15:09 on Thu 1 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/ekadashi?on=2011-12-05", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-12-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25569, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-12-04T21:20:13-06:00", "utc": "2011-12-05T03:20:13Z", "ms": 1323055212751.7207 }, "end": { "local": "2011-12-05T23:57:32-06:00", "utc": "2011-12-06T05:57:32Z", "ms": 1323151051898.8718 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-12-04T21:20:13-06:00", "utc": "2011-12-05T03:20:13Z", "ms": 1323055212751.7207 }, "end": { "local": "2011-12-05T23:57:32-06:00", "utc": "2011-12-06T05:57:32Z", "ms": 1323151051898.8718 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-12-05", "window": { "start": { "local": "2011-12-05T07:02:43-06:00", "utc": "2011-12-05T13:02:43Z", "ms": 1323090163130.4624 }, "end": { "local": "2011-12-05T07:02:43-06:00", "utc": "2011-12-05T13:02:43Z", "ms": 1323090163130.4624 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-12-06", "window": { "start": { "local": "2011-12-06T07:03:41-06:00", "utc": "2011-12-06T13:03:41Z", "ms": 1323176621041.428 }, "end": { "local": "2011-12-06T07:03:41-06:00", "utc": "2011-12-06T13:03:41Z", "ms": 1323176621041.428 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:20 on Sun 4 Dec to 23:58 on Mon 5 Dec.", "fact": "2011-12-05T03:20:13Z → 2011-12-06T05:57:32Z" }, { "step": "kaala", "text": "Sunrise is at 07:03 on the 5th and 07:04 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 25569 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Chicago, 2011: Monday 5 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-12-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-12-05", "confidence": "determinate" } ], "quote": "In Chicago, Mokṣadā Ekādaśī 2011 falls on Monday 5 December. Ekādaśī runs from 21:20 on Sun 4 Dec to 23:58 on Mon 5 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-12-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-12-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31545, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2011-12-05T23:57:32-06:00", "utc": "2011-12-06T05:57:32Z", "ms": 1323151051898.8718 }, "end": { "local": "2011-12-07T02:32:10-06:00", "utc": "2011-12-07T08:32:10Z", "ms": 1323246729989.9897 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-12-05T23:57:32-06:00", "utc": "2011-12-06T05:57:32Z", "ms": 1323151051898.8718 }, "end": { "local": "2011-12-07T02:32:10-06:00", "utc": "2011-12-07T08:32:10Z", "ms": 1323246729989.9897 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-12-06", "window": { "start": { "local": "2011-12-06T11:17:30-06:00", "utc": "2011-12-06T17:17:30Z", "ms": 1323191849502.0981 }, "end": { "local": "2011-12-06T12:05:30-06:00", "utc": "2011-12-06T18:05:30Z", "ms": 1323194729502.0981 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-12-07", "window": { "start": { "local": "2011-12-07T11:17:55-06:00", "utc": "2011-12-07T17:17:55Z", "ms": 1323278275415.3423 }, "end": { "local": "2011-12-07T12:05:55-06:00", "utc": "2011-12-07T18:05:55Z", "ms": 1323281155415.3423 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 23:58 on Mon 5 Dec to 02:32 on Wed 7 Dec.", "fact": "2011-12-06T05:57:32Z → 2011-12-07T08:32:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:17–12:05 on the 6th, 11:18–12:06 on the 7th.", "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 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31545 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Chicago, 2011: Tuesday 6 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": "2011-12-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-12-06", "confidence": "determinate" } ], "quote": "In Chicago, Akhaṇḍa Dvādaśī 2011 falls on Tuesday 6 December. Dvādaśī runs from 23:58 on Mon 5 Dec to 02:32 on Wed 7 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/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/2011/pradosha-vrata?on=2011-12-07", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-12-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29689, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-12-07T02:32:10-06:00", "utc": "2011-12-07T08:32:10Z", "ms": 1323246729989.9897 }, "end": { "local": "2011-12-08T04:54:30-06:00", "utc": "2011-12-08T10:54:30Z", "ms": 1323341669725.295 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-12-07T02:32:10-06:00", "utc": "2011-12-07T08:32:10Z", "ms": 1323246729989.9897 }, "end": { "local": "2011-12-08T04:54:30-06:00", "utc": "2011-12-08T10:54:30Z", "ms": 1323341669725.295 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-12-06", "window": { "start": { "local": "2011-12-06T16:19:18-06:00", "utc": "2011-12-06T22:19:18Z", "ms": 1323209957962.7683 }, "end": { "local": "2011-12-06T18:17:21-06:00", "utc": "2011-12-07T00:17:21Z", "ms": 1323217040580.917 } }, "covered_min": 0, "window_min": 118, "qualifies": false }, { "local_date": "2011-12-07", "window": { "start": { "local": "2011-12-07T16:19:13-06:00", "utc": "2011-12-07T22:19:13Z", "ms": 1323296353231.801 }, "end": { "local": "2011-12-07T18:17:24-06:00", "utc": "2011-12-08T00:17:24Z", "ms": 1323303443834.092 } }, "covered_min": 118, "window_min": 118, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:32 on Wed 7 Dec to 04:54 on Thu 8 Dec.", "fact": "2011-12-07T08:32:10Z → 2011-12-08T10:54:30Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:19–18:17 on the 6th, 16:19–18:17 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 29689 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2011: Wednesday 7 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-12-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-12-07", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2011 falls on Wednesday 7 December. Trayodaśī runs from 02:32 on Wed 7 Dec to 04:54 on Thu 8 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-12-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-12-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27770, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2011-12-09T06:57:26-06:00", "utc": "2011-12-09T12:57:26Z", "ms": 1323435445594.0315 }, "end": { "local": "2011-12-10T08:36:23-06:00", "utc": "2011-12-10T14:36:23Z", "ms": 1323527783262.7546 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-12-09T06:57:26-06:00", "utc": "2011-12-09T12:57:26Z", "ms": 1323435445594.0315 }, "end": { "local": "2011-12-10T08:36:23-06:00", "utc": "2011-12-10T14:36:23Z", "ms": 1323527783262.7546 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-12-09", "window": { "start": { "local": "2011-12-09T16:19:11-06:00", "utc": "2011-12-09T22:19:11Z", "ms": 1323469150936.7173 }, "end": { "local": "2011-12-09T18:17:36-06:00", "utc": "2011-12-10T00:17:36Z", "ms": 1323476255960.611 } }, "covered_min": 118, "window_min": 118, "qualifies": true }, { "local_date": "2011-12-10", "window": { "start": { "local": "2011-12-10T16:19:13-06:00", "utc": "2011-12-10T22:19:13Z", "ms": 1323555553377.7925 }, "end": { "local": "2011-12-10T18:17:45-06:00", "utc": "2011-12-11T00:17:45Z", "ms": 1323562664824.6626 } }, "covered_min": 0, "window_min": 119, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:57 on Fri 9 Dec to 08:36 on Sat 10 Dec.", "fact": "2011-12-09T12:57:26Z → 2011-12-10T14:36:23Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:19–18:18 on the 9th, 16:19–18:18 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 118 of 118 minutes on the 9th and 0 of 119 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27770 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Chicago, 2011: Friday 9 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": "2011-12-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-12-09", "confidence": "determinate" } ], "quote": "In Chicago, Dattātreyotpatti (Datta Jayanti) 2011 falls on Friday 9 December. Pūrṇimā runs from 06:57 on Fri 9 Dec to 08:36 on Sat 10 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/dattatreyotpatti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/sankashta-chaturthi?on=2011-12-13", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-12-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31601, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-12-13T10:51:34-06:00", "utc": "2011-12-13T16:51:34Z", "ms": 1323795093703.015 }, "end": { "local": "2011-12-14T10:42:04-06:00", "utc": "2011-12-14T16:42:04Z", "ms": 1323880924301.4976 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-12-13T10:51:34-06:00", "utc": "2011-12-13T16:51:34Z", "ms": 1323795093703.015 }, "end": { "local": "2011-12-14T10:42:04-06:00", "utc": "2011-12-14T16:42:04Z", "ms": 1323880924301.4976 } }, "kaala": "moonrise", "days": [ { "local_date": "2011-12-13", "window": { "start": { "local": "2011-12-13T19:38:14-06:00", "utc": "2011-12-14T01:38:14Z", "ms": 1323826694358.611 }, "end": { "local": "2011-12-13T19:38:14-06:00", "utc": "2011-12-14T01:38:14Z", "ms": 1323826694358.611 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-12-14", "window": { "start": { "local": "2011-12-14T20:44:35-06:00", "utc": "2011-12-15T02:44:35Z", "ms": 1323917075418.6821 }, "end": { "local": "2011-12-14T20:44:35-06:00", "utc": "2011-12-15T02:44:35Z", "ms": 1323917075418.6821 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:52 on Tue 13 Dec to 10:42 on Wed 14 Dec.", "fact": "2011-12-13T16:51:34Z → 2011-12-14T16:42:04Z" }, { "step": "kaala", "text": "Moonrise is at 19:38 on the 13th and 20:45 on the 14th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 13th and is not on the 14th.", "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 31601 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2011: Tuesday 13 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": "2011-12-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-12-13", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2011 falls on Tuesday 13 December. Caturthī runs from 10:52 on Tue 13 Dec to 10:42 on Wed 14 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/sankashta-chaturthi?on=2011-12-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2011/ekadashi?on=2011-12-20", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-12-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21429, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2011-12-20T01:17:18-06:00", "utc": "2011-12-20T07:17:18Z", "ms": 1324365437562.9685 }, "end": { "local": "2011-12-20T22:39:43-06:00", "utc": "2011-12-21T04:39:43Z", "ms": 1324442382775.8284 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-12-20T01:17:18-06:00", "utc": "2011-12-20T07:17:18Z", "ms": 1324365437562.9685 }, "end": { "local": "2011-12-20T22:39:43-06:00", "utc": "2011-12-21T04:39:43Z", "ms": 1324442382775.8284 } }, "kaala": "sunrise", "days": [ { "local_date": "2011-12-20", "window": { "start": { "local": "2011-12-20T07:14:26-06:00", "utc": "2011-12-20T13:14:26Z", "ms": 1324386866351.8772 }, "end": { "local": "2011-12-20T07:14:26-06:00", "utc": "2011-12-20T13:14:26Z", "ms": 1324386866351.8772 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2011-12-21", "window": { "start": { "local": "2011-12-21T07:14:59-06:00", "utc": "2011-12-21T13:14:59Z", "ms": 1324473298705.8867 }, "end": { "local": "2011-12-21T07:14:59-06:00", "utc": "2011-12-21T13:14:59Z", "ms": 1324473298705.8867 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:17 on Tue 20 Dec to 22:40 on Tue 20 Dec.", "fact": "2011-12-20T07:17:18Z → 2011-12-21T04:39:43Z" }, { "step": "kaala", "text": "Sunrise is at 07:14 on the 20th and 07:15 on the 21st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 20th and is not on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21429 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Chicago, 2011: Tuesday 20 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": "2011-12-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-12-20", "confidence": "determinate" } ], "quote": "In Chicago, Saphalā Ekādaśī 2011 falls on Tuesday 20 December. Ekādaśī runs from 01:17 on Tue 20 Dec to 22:40 on Tue 20 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2011/ekadashi?on=2011-12-20", "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/2011/pradosha-vrata?on=2011-12-22", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-12-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2822, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2011-12-21T19:55:06-06:00", "utc": "2011-12-22T01:55:06Z", "ms": 1324518906266.526 }, "end": { "local": "2011-12-22T17:09:49-06:00", "utc": "2011-12-22T23:09:49Z", "ms": 1324595388589.9756 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-12-21T19:55:06-06:00", "utc": "2011-12-22T01:55:06Z", "ms": 1324518906266.526 }, "end": { "local": "2011-12-22T17:09:49-06:00", "utc": "2011-12-22T23:09:49Z", "ms": 1324595388589.9756 } }, "kaala": "pradosha", "days": [ { "local_date": "2011-12-21", "window": { "start": { "local": "2011-12-21T16:22:16-06:00", "utc": "2011-12-21T22:22:16Z", "ms": 1324506136380.591 }, "end": { "local": "2011-12-21T18:21:22-06:00", "utc": "2011-12-22T00:21:22Z", "ms": 1324513282062.4683 } }, "covered_min": 0, "window_min": 119, "qualifies": false }, { "local_date": "2011-12-22", "window": { "start": { "local": "2011-12-22T16:22:47-06:00", "utc": "2011-12-22T22:22:47Z", "ms": 1324592566772.8843 }, "end": { "local": "2011-12-22T18:21:52-06:00", "utc": "2011-12-23T00:21:52Z", "ms": 1324599712160.3787 } }, "covered_min": 47, "window_min": 119, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:55 on Wed 21 Dec to 17:10 on Thu 22 Dec.", "fact": "2011-12-22T01:55:06Z → 2011-12-22T23:09:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:22–18:21 on the 21st, 16:23–18:22 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 119 minutes on the 21st and 47 of 119 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 2822 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2011: Thursday 22 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": "2011-12-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-12-22", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2011 falls on Thursday 22 December. Trayodaśī runs from 19:55 on Wed 21 Dec to 17:10 on Thu 22 Dec and covers 47 of 119 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2011/pradosha-vrata?on=2011-12-22", "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/2011/shivaratri?on=2011-12-22", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-12-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22533, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2011-12-22T17:09:49-06:00", "utc": "2011-12-22T23:09:49Z", "ms": 1324595388589.9756 }, "end": { "local": "2011-12-23T14:30:59-06:00", "utc": "2011-12-23T20:30:59Z", "ms": 1324672259309.9568 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-12-22T17:09:49-06:00", "utc": "2011-12-22T23:09:49Z", "ms": 1324595388589.9756 }, "end": { "local": "2011-12-23T14:30:59-06:00", "utc": "2011-12-23T20:30:59Z", "ms": 1324672259309.9568 } }, "kaala": "nishita", "days": [ { "local_date": "2011-12-22", "window": { "start": { "local": "2011-12-22T23:25:22-06:00", "utc": "2011-12-23T05:25:22Z", "ms": 1324617921975.9888 }, "end": { "local": "2011-12-23T00:13:22-06:00", "utc": "2011-12-23T06:13:22Z", "ms": 1324620801975.9888 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-12-23", "window": { "start": { "local": "2011-12-23T23:25:51-06:00", "utc": "2011-12-24T05:25:51Z", "ms": 1324704351274.1113 }, "end": { "local": "2011-12-24T00:13:51-06:00", "utc": "2011-12-24T06:13:51Z", "ms": 1324707231274.1113 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:10 on Thu 22 Dec to 14:31 on Fri 23 Dec.", "fact": "2011-12-22T23:09:49Z → 2011-12-23T20:30:59Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:25–00:13 on the 22nd, 23:26–00:14 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 22533 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2011: Thursday 22 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-12-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-12-22", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2011 falls on Thursday 22 December. Caturdaśī runs from 17:10 on Thu 22 Dec to 14:31 on Fri 23 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2011/shivaratri?on=2011-12-22", "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/2011/vinayaka-chaturthi?on=2011-12-27", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2011, "local_date": "2011-12-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13860, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2011-12-27T07:36:39-06:00", "utc": "2011-12-27T13:36:39Z", "ms": 1324992998992.3293 }, "end": { "local": "2011-12-28T07:23:52-06:00", "utc": "2011-12-28T13:23:52Z", "ms": 1325078632065.1506 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2011-12-27T07:36:39-06:00", "utc": "2011-12-27T13:36:39Z", "ms": 1324992998992.3293 }, "end": { "local": "2011-12-28T07:23:52-06:00", "utc": "2011-12-28T13:23:52Z", "ms": 1325078632065.1506 } }, "kaala": "madhyahna", "days": [ { "local_date": "2011-12-27", "window": { "start": { "local": "2011-12-27T11:27:39-06:00", "utc": "2011-12-27T17:27:39Z", "ms": 1325006859213.0044 }, "end": { "local": "2011-12-27T12:15:39-06:00", "utc": "2011-12-27T18:15:39Z", "ms": 1325009739213.0044 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2011-12-28", "window": { "start": { "local": "2011-12-28T11:28:09-06:00", "utc": "2011-12-28T17:28:09Z", "ms": 1325093289127.7183 }, "end": { "local": "2011-12-28T12:16:09-06:00", "utc": "2011-12-28T18:16:09Z", "ms": 1325096169127.7183 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:37 on Tue 27 Dec to 07:24 on Wed 28 Dec.", "fact": "2011-12-27T13:36:39Z → 2011-12-28T13:23:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:28–12:16 on the 27th, 11:28–12:16 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 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13860 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2011: Tuesday 27 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2011-12-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2011-12-27", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2011 falls on Tuesday 27 December. Caturthī runs from 07:37 on Tue 27 Dec to 07:24 on Wed 28 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2011/vinayaka-chaturthi?on=2011-12-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } } ], "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }