{ "id": "/chicago/festivals/2004", "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": 2004, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/chicago/festivals/2004/ekadashi?on=2004-01-02", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25871, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-01-01T21:22:30-06:00", "utc": "2004-01-02T03:22:30Z", "ms": 1073013750280.8002 }, "end": { "local": "2004-01-03T00:07:31-06:00", "utc": "2004-01-03T06:07:31Z", "ms": 1073110050720.0292 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-01-01T21:22:30-06:00", "utc": "2004-01-02T03:22:30Z", "ms": 1073013750280.8002 }, "end": { "local": "2004-01-03T00:07:31-06:00", "utc": "2004-01-03T06:07:31Z", "ms": 1073110050720.0292 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-01-02", "window": { "start": { "local": "2004-01-02T07:18:38-06:00", "utc": "2004-01-02T13:18:38Z", "ms": 1073049518029.0294 }, "end": { "local": "2004-01-02T07:18:38-06:00", "utc": "2004-01-02T13:18:38Z", "ms": 1073049518029.0294 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-01-03", "window": { "start": { "local": "2004-01-03T07:18:41-06:00", "utc": "2004-01-03T13:18:41Z", "ms": 1073135921288.7286 }, "end": { "local": "2004-01-03T07:18:41-06:00", "utc": "2004-01-03T13:18:41Z", "ms": 1073135921288.7286 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:23 on Thu 1 Jan to 00:08 on Sat 3 Jan.", "fact": "2004-01-02T03:22:30Z → 2004-01-03T06:07:31Z" }, { "step": "kaala", "text": "Sunrise is at 07:19 on the 2nd and 07:19 on the 3rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 2nd and is not on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25871 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Chicago, 2004: Friday 2 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": "2004-01-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-02", "confidence": "determinate" } ], "quote": "In Chicago, Putradā Ekādaśī 2004 falls on Friday 2 January. Ekādaśī runs from 21:23 on Thu 1 Jan to 00:08 on Sat 3 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-01-02", "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/2004/pradosha-vrata?on=2004-01-04", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30221, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-01-04T02:53:23-06:00", "utc": "2004-01-04T08:53:23Z", "ms": 1073206402901.0789 }, "end": { "local": "2004-01-05T05:28:52-06:00", "utc": "2004-01-05T11:28:52Z", "ms": 1073302131677.0594 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-01-04T02:53:23-06:00", "utc": "2004-01-04T08:53:23Z", "ms": 1073206402901.0789 }, "end": { "local": "2004-01-05T05:28:52-06:00", "utc": "2004-01-05T11:28:52Z", "ms": 1073302131677.0594 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-01-03", "window": { "start": { "local": "2004-01-03T16:31:24-06:00", "utc": "2004-01-03T22:31:24Z", "ms": 1073169083520.1465 }, "end": { "local": "2004-01-03T18:29:42-06:00", "utc": "2004-01-04T00:29:42Z", "ms": 1073176182008.8726 } }, "covered_min": 0, "window_min": 118, "qualifies": false }, { "local_date": "2004-01-04", "window": { "start": { "local": "2004-01-04T16:32:18-06:00", "utc": "2004-01-04T22:32:18Z", "ms": 1073255538237.1055 }, "end": { "local": "2004-01-04T18:30:29-06:00", "utc": "2004-01-05T00:30:29Z", "ms": 1073262629234.7646 } }, "covered_min": 118, "window_min": 118, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:53 on Sun 4 Jan to 05:29 on Mon 5 Jan.", "fact": "2004-01-04T08:53:23Z → 2004-01-05T11:28:52Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:31–18:30 on the 3rd, 16:32–18:30 on the 4th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 118 minutes on the 3rd and 118 of 118 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30221 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2004: Sunday 4 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": "2004-01-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-04", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2004 falls on Sunday 4 January. Trayodaśī runs from 02:53 on Sun 4 Jan to 05:29 on Mon 5 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-01-04", "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/2004/sankashta-chaturthi?on=2004-01-10", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24806, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-01-10T12:53:07-06:00", "utc": "2004-01-10T18:53:07Z", "ms": 1073760787367.7893 }, "end": { "local": "2004-01-11T13:08:26-06:00", "utc": "2004-01-11T19:08:26Z", "ms": 1073848105990.1179 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-01-10T12:53:07-06:00", "utc": "2004-01-10T18:53:07Z", "ms": 1073760787367.7893 }, "end": { "local": "2004-01-11T13:08:26-06:00", "utc": "2004-01-11T19:08:26Z", "ms": 1073848105990.1179 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-01-10", "window": { "start": { "local": "2004-01-10T19:46:33-06:00", "utc": "2004-01-11T01:46:33Z", "ms": 1073785592980.8757 }, "end": { "local": "2004-01-10T19:46:33-06:00", "utc": "2004-01-11T01:46:33Z", "ms": 1073785592980.8757 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-01-11", "window": { "start": { "local": "2004-01-11T20:54:24-06:00", "utc": "2004-01-12T02:54:24Z", "ms": 1073876064301.9578 }, "end": { "local": "2004-01-11T20:54:24-06:00", "utc": "2004-01-12T02:54:24Z", "ms": 1073876064301.9578 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:53 on Sat 10 Jan to 13:08 on Sun 11 Jan.", "fact": "2004-01-10T18:53:07Z → 2004-01-11T19:08:26Z" }, { "step": "kaala", "text": "Moonrise is at 19:47 on the 10th and 20:54 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 10th and is not on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24806 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2004: Saturday 10 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": "2004-01-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-10", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2004 falls on Saturday 10 January. Caturthī runs from 12:53 on Sat 10 Jan to 13:08 on Sun 11 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/sankashta-chaturthi?on=2004-01-10", "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/2004/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16194, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2004-01-14T12:12:46-06:00", "utc": "2004-01-14T18:12:46Z", "ms": 1074103966225.0189 }, "end": { "local": "2004-02-13T01:11:03-06:00", "utc": "2004-02-13T07:11:03Z", "ms": 1076656263005.8335 } }, "span": { "of": "transit", "start": { "local": "2004-01-14T12:12:46-06:00", "utc": "2004-01-14T18:12:46Z", "ms": 1074103966225.0189 }, "end": { "local": "2004-01-14T12:12:46-06:00", "utc": "2004-01-14T18:12:46Z", "ms": 1074103966225.0189 } }, "kaala": "sunset-day", "days": [ { "local_date": "2004-01-14", "window": { "start": { "local": "2004-01-13T16:41:33-06:00", "utc": "2004-01-13T22:41:33Z", "ms": 1074033693029.9991 }, "end": { "local": "2004-01-14T16:42:41-06:00", "utc": "2004-01-14T22:42:41Z", "ms": 1074120160615.161 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2004-01-15", "window": { "start": { "local": "2004-01-14T16:42:41-06:00", "utc": "2004-01-14T22:42:41Z", "ms": 1074120160615.161 }, "end": { "local": "2004-01-15T16:43:49-06:00", "utc": "2004-01-15T22:43:49Z", "ms": 1074206629189.8312 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2004-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 12:13 on Wed 14 Jan.", "fact": "2004-01-14T18:12:46Z · 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 16194 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Wednesday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Chicago, 2004: Tuesday 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": "2004-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2004-01-13", "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": "2004-01-13", "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, Bhogi 2004 falls on Tuesday 13 January. It is kept the day before Pongal, which falls on Wednesday 14 January. The Sun enters Makara at 12:13 on Wed 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16194, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2004-01-14T12:12:46-06:00", "utc": "2004-01-14T18:12:46Z", "ms": 1074103966225.0189 }, "end": { "local": "2004-02-13T01:11:03-06:00", "utc": "2004-02-13T07:11:03Z", "ms": 1076656263005.8335 } }, "span": { "of": "transit", "start": { "local": "2004-01-14T12:12:46-06:00", "utc": "2004-01-14T18:12:46Z", "ms": 1074103966225.0189 }, "end": { "local": "2004-01-14T12:12:46-06:00", "utc": "2004-01-14T18:12:46Z", "ms": 1074103966225.0189 } }, "kaala": "sunset-day", "days": [ { "local_date": "2004-01-14", "window": { "start": { "local": "2004-01-13T16:41:33-06:00", "utc": "2004-01-13T22:41:33Z", "ms": 1074033693029.9991 }, "end": { "local": "2004-01-14T16:42:41-06:00", "utc": "2004-01-14T22:42:41Z", "ms": 1074120160615.161 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2004-01-15", "window": { "start": { "local": "2004-01-14T16:42:41-06:00", "utc": "2004-01-14T22:42:41Z", "ms": 1074120160615.161 }, "end": { "local": "2004-01-15T16:43:49-06:00", "utc": "2004-01-15T22:43:49Z", "ms": 1074206629189.8312 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 12:13 on Wed 14 Jan.", "fact": "2004-01-14T18:12:46Z · 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 16194 s" }, { "step": "ruling", "text": "Pongal, Chicago, 2004: Wednesday 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": "2004-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2004-01-14", "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": "2004-01-14", "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, Pongal 2004 falls on Wednesday 14 January. The Sun enters Makara at 12:13 on Wed 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 42434, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2004-01-14T12:12:46-06:00", "utc": "2004-01-14T18:12:46Z", "ms": 1074103966225.0189 }, "end": { "local": "2004-02-13T01:11:03-06:00", "utc": "2004-02-13T07:11:03Z", "ms": 1076656263005.8335 } }, "span": { "of": "transit", "start": { "local": "2004-01-14T12:12:46-06:00", "utc": "2004-01-14T18:12:46Z", "ms": 1074103966225.0189 }, "end": { "local": "2004-01-14T12:12:46-06:00", "utc": "2004-01-14T18:12:46Z", "ms": 1074103966225.0189 } }, "kaala": "civil-day", "days": [ { "local_date": "2004-01-14", "window": { "start": { "local": "2004-01-14T00:00:00-06:00", "utc": "2004-01-14T06:00:00Z", "ms": 1074060000000 }, "end": { "local": "2004-01-15T00:00:00-06:00", "utc": "2004-01-15T06:00:00Z", "ms": 1074146400000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "2004-01-15", "window": { "start": { "local": "2004-01-15T00:00:00-06:00", "utc": "2004-01-15T06:00:00Z", "ms": 1074146400000 }, "end": { "local": "2004-01-16T00:00:00-06:00", "utc": "2004-01-16T06:00:00Z", "ms": 1074232800000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 12:13 on Wed 14 Jan.", "fact": "2004-01-14T18:12:46Z · 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 15th.", "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 42434 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Chicago, 2004: Wednesday 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": "2004-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2004-01-14", "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." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "2004-01-14", "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 2004 falls on Wednesday 14 January. The Sun enters Makara at 12:13 on Wed 14 Jan, and the rule counts the day from midnight.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16194, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2004-01-14T12:12:46-06:00", "utc": "2004-01-14T18:12:46Z", "ms": 1074103966225.0189 }, "end": { "local": "2004-02-13T01:11:03-06:00", "utc": "2004-02-13T07:11:03Z", "ms": 1076656263005.8335 } }, "span": { "of": "transit", "start": { "local": "2004-01-14T12:12:46-06:00", "utc": "2004-01-14T18:12:46Z", "ms": 1074103966225.0189 }, "end": { "local": "2004-01-14T12:12:46-06:00", "utc": "2004-01-14T18:12:46Z", "ms": 1074103966225.0189 } }, "kaala": "sunset-day", "days": [ { "local_date": "2004-01-14", "window": { "start": { "local": "2004-01-13T16:41:33-06:00", "utc": "2004-01-13T22:41:33Z", "ms": 1074033693029.9991 }, "end": { "local": "2004-01-14T16:42:41-06:00", "utc": "2004-01-14T22:42:41Z", "ms": 1074120160615.161 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2004-01-15", "window": { "start": { "local": "2004-01-14T16:42:41-06:00", "utc": "2004-01-14T22:42:41Z", "ms": 1074120160615.161 }, "end": { "local": "2004-01-15T16:43:49-06:00", "utc": "2004-01-15T22:43:49Z", "ms": 1074206629189.8312 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2004-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 12:13 on Wed 14 Jan.", "fact": "2004-01-14T18:12:46Z · 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 16194 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Wednesday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Chicago, 2004: Thursday 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": "2004-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2004-01-15", "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": "2004-01-15", "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 2004 falls on Thursday 15 January. It is kept the day after Pongal, which falls on Wednesday 14 January. The Sun enters Makara at 12:13 on Wed 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-01-17", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5246, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-01-17T05:47:56-06:00", "utc": "2004-01-17T11:47:56Z", "ms": 1074340075556.4989 }, "end": { "local": "2004-01-18T03:08:24-06:00", "utc": "2004-01-18T09:08:24Z", "ms": 1074416904205.611 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-01-17T05:47:56-06:00", "utc": "2004-01-17T11:47:56Z", "ms": 1074340075556.4989 }, "end": { "local": "2004-01-18T03:08:24-06:00", "utc": "2004-01-18T09:08:24Z", "ms": 1074416904205.611 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-01-17", "window": { "start": { "local": "2004-01-17T07:15:22-06:00", "utc": "2004-01-17T13:15:22Z", "ms": 1074345321685.0228 }, "end": { "local": "2004-01-17T07:15:22-06:00", "utc": "2004-01-17T13:15:22Z", "ms": 1074345321685.0228 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-01-18", "window": { "start": { "local": "2004-01-18T07:14:50-06:00", "utc": "2004-01-18T13:14:50Z", "ms": 1074431690405.3684 }, "end": { "local": "2004-01-18T07:14:50-06:00", "utc": "2004-01-18T13:14:50Z", "ms": 1074431690405.3684 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:48 on Sat 17 Jan to 03:08 on Sun 18 Jan.", "fact": "2004-01-17T11:47:56Z → 2004-01-18T09:08:24Z" }, { "step": "kaala", "text": "Sunrise is at 07:15 on the 17th and 07:15 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 17th and is not on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5246 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Chicago, 2004: Saturday 17 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": "2004-01-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-17", "confidence": "determinate" } ], "quote": "In Chicago, Ṣaṭtilā Ekādaśī 2004 falls on Saturday 17 January. Ekādaśī runs from 05:48 on Sat 17 Jan to 03:08 on Sun 18 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-01-17", "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/2004/pradosha-vrata?on=2004-01-19", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8620, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-01-19T00:12:36-06:00", "utc": "2004-01-19T06:12:36Z", "ms": 1074492756204.6688 }, "end": { "local": "2004-01-19T21:07:33-06:00", "utc": "2004-01-20T03:07:33Z", "ms": 1074568053215.8812 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-01-19T00:12:36-06:00", "utc": "2004-01-19T06:12:36Z", "ms": 1074492756204.6688 }, "end": { "local": "2004-01-19T21:07:33-06:00", "utc": "2004-01-20T03:07:33Z", "ms": 1074568053215.8812 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-01-18", "window": { "start": { "local": "2004-01-18T16:47:20-06:00", "utc": "2004-01-18T22:47:20Z", "ms": 1074466040282.3348 }, "end": { "local": "2004-01-18T18:42:56-06:00", "utc": "2004-01-19T00:42:56Z", "ms": 1074472975838.3754 } }, "covered_min": 0, "window_min": 116, "qualifies": false }, { "local_date": "2004-01-19", "window": { "start": { "local": "2004-01-19T16:48:32-06:00", "utc": "2004-01-19T22:48:32Z", "ms": 1074552512240.0547 }, "end": { "local": "2004-01-19T18:43:53-06:00", "utc": "2004-01-20T00:43:53Z", "ms": 1074559433454.496 } }, "covered_min": 115, "window_min": 115, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:13 on Mon 19 Jan to 21:08 on Mon 19 Jan.", "fact": "2004-01-19T06:12:36Z → 2004-01-20T03:07:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:47–18:43 on the 18th, 16:49–18:44 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 116 minutes on the 18th and 115 of 115 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8620 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2004: Monday 19 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": "2004-01-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-19", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2004 falls on Monday 19 January. Trayodaśī runs from 00:13 on Mon 19 Jan to 21:08 on Mon 19 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-01-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/shivaratri?on=2004-01-19", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8974, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-01-19T21:07:33-06:00", "utc": "2004-01-20T03:07:33Z", "ms": 1074568053215.8812 }, "end": { "local": "2004-01-20T18:01:47-06:00", "utc": "2004-01-21T00:01:47Z", "ms": 1074643306551.957 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-01-19T21:07:33-06:00", "utc": "2004-01-20T03:07:33Z", "ms": 1074568053215.8812 }, "end": { "local": "2004-01-20T18:01:47-06:00", "utc": "2004-01-21T00:01:47Z", "ms": 1074643306551.957 } }, "kaala": "nishita", "days": [ { "local_date": "2004-01-19", "window": { "start": { "local": "2004-01-19T23:37:07-06:00", "utc": "2004-01-20T05:37:07Z", "ms": 1074577026794.2095 }, "end": { "local": "2004-01-20T00:25:07-06:00", "utc": "2004-01-20T06:25:07Z", "ms": 1074579906794.2095 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-01-20", "window": { "start": { "local": "2004-01-20T23:37:24-06:00", "utc": "2004-01-21T05:37:24Z", "ms": 1074663444254.4182 }, "end": { "local": "2004-01-21T00:25:24-06:00", "utc": "2004-01-21T06:25:24Z", "ms": 1074666324254.4182 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:08 on Mon 19 Jan to 18:02 on Tue 20 Jan.", "fact": "2004-01-20T03:07:33Z → 2004-01-21T00:01:47Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:37–00:25 on the 19th, 23:37–00:25 on the 20th.", "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 19th and 0 of 48 on the 20th.", "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 8974 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2004: Monday 19 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": "2004-01-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-19", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2004 falls on Monday 19 January. Caturdaśī runs from 21:08 on Mon 19 Jan to 18:02 on Tue 20 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/shivaratri?on=2004-01-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29447, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-01-19T21:07:33-06:00", "utc": "2004-01-20T03:07:33Z", "ms": 1074568053215.8812 }, "end": { "local": "2004-01-20T18:01:47-06:00", "utc": "2004-01-21T00:01:47Z", "ms": 1074643306551.957 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-01-19T21:07:33-06:00", "utc": "2004-01-20T03:07:33Z", "ms": 1074568053215.8812 }, "end": { "local": "2004-01-20T18:01:47-06:00", "utc": "2004-01-21T00:01:47Z", "ms": 1074643306551.957 } }, "kaala": "arunodaya", "days": [ { "local_date": "2004-01-20", "window": { "start": { "local": "2004-01-20T05:18:20-06:00", "utc": "2004-01-20T11:18:20Z", "ms": 1074597500133.9231 }, "end": { "local": "2004-01-20T07:13:41-06:00", "utc": "2004-01-20T13:13:41Z", "ms": 1074604421348.3644 } }, "covered_min": 115, "window_min": 115, "qualifies": true }, { "local_date": "2004-01-21", "window": { "start": { "local": "2004-01-21T05:17:57-06:00", "utc": "2004-01-21T11:17:57Z", "ms": 1074683877118.4187 }, "end": { "local": "2004-01-21T07:13:04-06:00", "utc": "2004-01-21T13:13:04Z", "ms": 1074690783614.4188 } }, "covered_min": 0, "window_min": 115, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:08 on Mon 19 Jan to 18:02 on Tue 20 Jan.", "fact": "2004-01-20T03:07:33Z → 2004-01-21T00:01:47Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:18–07:14 on the 20th, 05:18–07:13 on the 21st.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 115 of 115 minutes on the 20th and 0 of 115 on the 21st.", "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 29447 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Chicago, 2004: Tuesday 20 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Yama tarpana (covering a period of 4 ghatikas before sunrise)" } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-01-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-20", "confidence": "determinate" } ], "quote": "In Chicago, Yama Tarpaṇa 2004 falls on Tuesday 20 January. Caturdaśī runs from 21:08 on Mon 19 Jan to 18:02 on Tue 20 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10169, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-01-24T08:49:21-06:00", "utc": "2004-01-24T14:49:21Z", "ms": 1074955761050.9529 }, "end": { "local": "2004-01-25T08:06:16-06:00", "utc": "2004-01-25T14:06:16Z", "ms": 1075039575860.7996 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-01-24T08:49:21-06:00", "utc": "2004-01-24T14:49:21Z", "ms": 1074955761050.9529 }, "end": { "local": "2004-01-25T08:06:16-06:00", "utc": "2004-01-25T14:06:16Z", "ms": 1075039575860.7996 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-01-24", "window": { "start": { "local": "2004-01-24T11:38:50-06:00", "utc": "2004-01-24T17:38:50Z", "ms": 1074965929584.6892 }, "end": { "local": "2004-01-24T12:26:50-06:00", "utc": "2004-01-24T18:26:50Z", "ms": 1074968809584.6892 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-01-25", "window": { "start": { "local": "2004-01-25T11:39:04-06:00", "utc": "2004-01-25T17:39:04Z", "ms": 1075052344214.5889 }, "end": { "local": "2004-01-25T12:27:04-06:00", "utc": "2004-01-25T18:27:04Z", "ms": 1075055224214.5889 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:49 on Sat 24 Jan to 08:06 on Sun 25 Jan.", "fact": "2004-01-24T14:49:21Z → 2004-01-25T14:06:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 24th, 11:39–12:27 on the 25th.", "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 24th and 0 of 48 on the 25th.", "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 10169 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Chicago, 2004: Saturday 24 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-01-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-24", "confidence": "determinate" } ], "quote": "In Chicago, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 2004 falls on Saturday 24 January. Caturthī runs from 08:49 on Sat 24 Jan to 08:06 on Sun 25 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29120, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-01-24T08:49:21-06:00", "utc": "2004-01-24T14:49:21Z", "ms": 1074955761050.9529 }, "end": { "local": "2004-01-25T08:06:16-06:00", "utc": "2004-01-25T14:06:16Z", "ms": 1075039575860.7996 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-01-24T08:49:21-06:00", "utc": "2004-01-24T14:49:21Z", "ms": 1074955761050.9529 }, "end": { "local": "2004-01-25T08:06:16-06:00", "utc": "2004-01-25T14:06:16Z", "ms": 1075039575860.7996 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-01-24", "window": { "start": { "local": "2004-01-24T16:54:41-06:00", "utc": "2004-01-24T22:54:41Z", "ms": 1074984881302.9574 }, "end": { "local": "2004-01-24T18:48:45-06:00", "utc": "2004-01-25T00:48:45Z", "ms": 1074991725376.3832 } }, "covered_min": 114, "window_min": 114, "qualifies": true }, { "local_date": "2004-01-25", "window": { "start": { "local": "2004-01-25T16:55:57-06:00", "utc": "2004-01-25T22:55:57Z", "ms": 1075071356575.5272 }, "end": { "local": "2004-01-25T18:49:44-06:00", "utc": "2004-01-26T00:49:44Z", "ms": 1075078184210.8298 } }, "covered_min": 0, "window_min": 114, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:49 on Sat 24 Jan to 08:06 on Sun 25 Jan.", "fact": "2004-01-24T14:49:21Z → 2004-01-25T14:06:16Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:55–18:49 on the 24th, 16:56–18:50 on the 25th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 114 of 114 minutes on the 24th and 0 of 114 on the 25th.", "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 29120 s" }, { "step": "ruling", "text": "Tila Caturthī, Chicago, 2004: Saturday 24 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "tila-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-01-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-24", "confidence": "determinate" } ], "quote": "In Chicago, Tila Caturthī 2004 falls on Saturday 24 January. Caturthī runs from 08:49 on Sat 24 Jan to 08:06 on Sun 25 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12316, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2004-01-25T08:06:16-06:00", "utc": "2004-01-25T14:06:16Z", "ms": 1075039575860.7996 }, "end": { "local": "2004-01-26T08:14:02-06:00", "utc": "2004-01-26T14:14:02Z", "ms": 1075126442227.3116 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-01-25T08:06:16-06:00", "utc": "2004-01-25T14:06:16Z", "ms": 1075039575860.7996 }, "end": { "local": "2004-01-26T08:14:02-06:00", "utc": "2004-01-26T14:14:02Z", "ms": 1075126442227.3116 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-01-25", "window": { "start": { "local": "2004-01-25T11:39:04-06:00", "utc": "2004-01-25T17:39:04Z", "ms": 1075052344214.5889 }, "end": { "local": "2004-01-25T12:27:04-06:00", "utc": "2004-01-25T18:27:04Z", "ms": 1075055224214.5889 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-01-26", "window": { "start": { "local": "2004-01-26T11:39:18-06:00", "utc": "2004-01-26T17:39:18Z", "ms": 1075138758026.8201 }, "end": { "local": "2004-01-26T12:27:18-06:00", "utc": "2004-01-26T18:27:18Z", "ms": 1075141638026.8201 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 08:06 on Sun 25 Jan to 08:14 on Mon 26 Jan.", "fact": "2004-01-25T14:06:16Z → 2004-01-26T14:14:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 25th, 11:39–12:27 on the 26th.", "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 25th and 0 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 12316 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Chicago, 2004: Sunday 25 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-01-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-25", "confidence": "determinate" } ], "quote": "In Chicago, Śrī Pañcamī 2004 falls on Sunday 25 January. Pañcamī runs from 08:06 on Sun 25 Jan to 08:14 on Mon 26 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12316, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2004-01-25T08:06:16-06:00", "utc": "2004-01-25T14:06:16Z", "ms": 1075039575860.7996 }, "end": { "local": "2004-01-26T08:14:02-06:00", "utc": "2004-01-26T14:14:02Z", "ms": 1075126442227.3116 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-01-25T08:06:16-06:00", "utc": "2004-01-25T14:06:16Z", "ms": 1075039575860.7996 }, "end": { "local": "2004-01-26T08:14:02-06:00", "utc": "2004-01-26T14:14:02Z", "ms": 1075126442227.3116 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-01-25", "window": { "start": { "local": "2004-01-25T11:39:04-06:00", "utc": "2004-01-25T17:39:04Z", "ms": 1075052344214.5889 }, "end": { "local": "2004-01-25T12:27:04-06:00", "utc": "2004-01-25T18:27:04Z", "ms": 1075055224214.5889 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-01-26", "window": { "start": { "local": "2004-01-26T11:39:18-06:00", "utc": "2004-01-26T17:39:18Z", "ms": 1075138758026.8201 }, "end": { "local": "2004-01-26T12:27:18-06:00", "utc": "2004-01-26T18:27:18Z", "ms": 1075141638026.8201 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 08:06 on Sun 25 Jan to 08:14 on Mon 26 Jan.", "fact": "2004-01-25T14:06:16Z → 2004-01-26T14:14:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 25th, 11:39–12:27 on the 26th.", "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 25th and 0 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: unstated → only-day · margin 12316 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Chicago, 2004: Sunday 25 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasanta-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-01-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-25", "confidence": "determinate" } ], "quote": "In Chicago, Vasanta Pañcamī 2004 falls on Sunday 25 January. Pañcamī runs from 08:06 on Sun 25 Jan to 08:14 on Mon 26 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7449, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2004-01-27T09:12:43-06:00", "utc": "2004-01-27T15:12:43Z", "ms": 1075216363169.8628 }, "end": { "local": "2004-01-28T10:57:03-06:00", "utc": "2004-01-28T16:57:03Z", "ms": 1075309023452.2399 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-01-27T09:12:43-06:00", "utc": "2004-01-27T15:12:43Z", "ms": 1075216363169.8628 }, "end": { "local": "2004-01-28T10:57:03-06:00", "utc": "2004-01-28T16:57:03Z", "ms": 1075309023452.2399 } }, "kaala": "arunodaya", "days": [ { "local_date": "2004-01-27", "window": { "start": { "local": "2004-01-27T05:15:03-06:00", "utc": "2004-01-27T11:15:03Z", "ms": 1075202102972.1506 }, "end": { "local": "2004-01-27T07:08:34-06:00", "utc": "2004-01-27T13:08:34Z", "ms": 1075208913858.121 } }, "covered_min": 0, "window_min": 114, "qualifies": false }, { "local_date": "2004-01-28", "window": { "start": { "local": "2004-01-28T05:14:28-06:00", "utc": "2004-01-28T11:14:28Z", "ms": 1075288468104.3557 }, "end": { "local": "2004-01-28T07:07:42-06:00", "utc": "2004-01-28T13:07:42Z", "ms": 1075295261940.5645 } }, "covered_min": 113, "window_min": 113, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 09:13 on Tue 27 Jan to 10:57 on Wed 28 Jan.", "fact": "2004-01-27T15:12:43Z → 2004-01-28T16:57:03Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:15–07:09 on the 27th, 05:14–07:08 on the 28th.", "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 114 minutes on the 27th and 113 of 113 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one dawn qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7449 s" }, { "step": "ruling", "text": "Ratha Saptamī, Chicago, 2004: Wednesday 28 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-01-28", "confidence": "determinate" } ], "quote": "In Chicago, Ratha Saptamī 2004 falls on Wednesday 28 January. Saptamī runs from 09:13 on Tue 27 Jan to 10:57 on Wed 28 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-02-01", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-02-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35360, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-01-31T18:40:29-06:00", "utc": "2004-02-01T00:40:29Z", "ms": 1075596028637.2307 }, "end": { "local": "2004-02-01T21:13:35-06:00", "utc": "2004-02-02T03:13:35Z", "ms": 1075691615013.4908 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-01-31T18:40:29-06:00", "utc": "2004-02-01T00:40:29Z", "ms": 1075596028637.2307 }, "end": { "local": "2004-02-01T21:13:35-06:00", "utc": "2004-02-02T03:13:35Z", "ms": 1075691615013.4908 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-02-01", "window": { "start": { "local": "2004-02-01T07:03:56-06:00", "utc": "2004-02-01T13:03:56Z", "ms": 1075640635627.9441 }, "end": { "local": "2004-02-01T07:03:56-06:00", "utc": "2004-02-01T13:03:56Z", "ms": 1075640635627.9441 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-02-02", "window": { "start": { "local": "2004-02-02T07:02:55-06:00", "utc": "2004-02-02T13:02:55Z", "ms": 1075726974574.7689 }, "end": { "local": "2004-02-02T07:02:55-06:00", "utc": "2004-02-02T13:02:55Z", "ms": 1075726974574.7689 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:40 on Sat 31 Jan to 21:14 on Sun 1 Feb.", "fact": "2004-02-01T00:40:29Z → 2004-02-02T03:13:35Z" }, { "step": "kaala", "text": "Sunrise is at 07:04 on the 1st and 07:03 on the 2nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 1st and is not on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35360 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Chicago, 2004: Sunday 1 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": "2004-02-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-02-01", "confidence": "determinate" } ], "quote": "In Chicago, Jayā Ekādaśī 2004 falls on Sunday 1 February. Ekādaśī runs from 18:40 on Sat 31 Jan to 21:14 on Sun 1 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-02-01", "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/2004/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-02-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31512, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2004-02-01T21:13:35-06:00", "utc": "2004-02-02T03:13:35Z", "ms": 1075691615013.4908 }, "end": { "local": "2004-02-02T23:23:56-06:00", "utc": "2004-02-03T05:23:56Z", "ms": 1075785835846.5728 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-02-01T21:13:35-06:00", "utc": "2004-02-02T03:13:35Z", "ms": 1075691615013.4908 }, "end": { "local": "2004-02-02T23:23:56-06:00", "utc": "2004-02-03T05:23:56Z", "ms": 1075785835846.5728 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-02-01", "window": { "start": { "local": "2004-02-01T11:40:23-06:00", "utc": "2004-02-01T17:40:23Z", "ms": 1075657223419.8718 }, "end": { "local": "2004-02-01T12:28:23-06:00", "utc": "2004-02-01T18:28:23Z", "ms": 1075660103419.8718 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-02-02", "window": { "start": { "local": "2004-02-02T11:40:31-06:00", "utc": "2004-02-02T17:40:31Z", "ms": 1075743631389.0886 }, "end": { "local": "2004-02-02T12:28:31-06:00", "utc": "2004-02-02T18:28:31Z", "ms": 1075746511389.0886 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 21:14 on Sun 1 Feb to 23:24 on Mon 2 Feb.", "fact": "2004-02-02T03:13:35Z → 2004-02-03T05:23:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 1st, 11:41–12:29 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31512 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Chicago, 2004: Monday 2 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhishma-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Bhisma dvadasi (purvaviddha), Amalaki dvadasi, Santana dvadasi, Varaha dvadasi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-02-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-02-02", "confidence": "determinate" } ], "quote": "In Chicago, Bhīṣma Dvādaśī 2004 falls on Monday 2 February. Dvādaśī runs from 21:14 on Sun 1 Feb to 23:24 on Mon 2 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/pradosha-vrata?on=2004-02-03", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15982, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-02-02T23:23:56-06:00", "utc": "2004-02-03T05:23:56Z", "ms": 1075785835846.5728 }, "end": { "local": "2004-02-04T01:04:15-06:00", "utc": "2004-02-04T07:04:15Z", "ms": 1075878254635.0853 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-02-02T23:23:56-06:00", "utc": "2004-02-03T05:23:56Z", "ms": 1075785835846.5728 }, "end": { "local": "2004-02-04T01:04:15-06:00", "utc": "2004-02-04T07:04:15Z", "ms": 1075878254635.0853 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-02-02", "window": { "start": { "local": "2004-02-02T17:06:08-06:00", "utc": "2004-02-02T23:06:08Z", "ms": 1075763168203.4084 }, "end": { "local": "2004-02-02T18:57:34-06:00", "utc": "2004-02-03T00:57:34Z", "ms": 1075769854017.3744 } }, "covered_min": 0, "window_min": 111, "qualifies": false }, { "local_date": "2004-02-03", "window": { "start": { "local": "2004-02-03T17:07:25-06:00", "utc": "2004-02-03T23:07:25Z", "ms": 1075849645243.2137 }, "end": { "local": "2004-02-03T18:58:32-06:00", "utc": "2004-02-04T00:58:32Z", "ms": 1075856312193.0754 } }, "covered_min": 111, "window_min": 111, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:24 on Mon 2 Feb to 01:04 on Wed 4 Feb.", "fact": "2004-02-03T05:23:56Z → 2004-02-04T07:04:15Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:06–18:58 on the 2nd, 17:07–18:59 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 111 minutes on the 2nd and 111 of 111 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15982 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2004: Tuesday 3 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": "2004-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-02-03", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2004 falls on Tuesday 3 February. Trayodaśī runs from 23:24 on Mon 2 Feb to 01:04 on Wed 4 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-02-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-02-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32041, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-02-05T02:11:40-06:00", "utc": "2004-02-05T08:11:40Z", "ms": 1075968700453.3477 }, "end": { "local": "2004-02-06T02:46:54-06:00", "utc": "2004-02-06T08:46:54Z", "ms": 1076057214278.3915 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2004-02-05T02:11:40-06:00", "utc": "2004-02-05T08:11:40Z", "ms": 1075968700453.3477 }, "end": { "local": "2004-02-06T02:46:54-06:00", "utc": "2004-02-06T08:46:54Z", "ms": 1076057214278.3915 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-02-05", "window": { "start": { "local": "2004-02-05T11:40:50-06:00", "utc": "2004-02-05T17:40:50Z", "ms": 1076002850321.7007 }, "end": { "local": "2004-02-05T12:28:50-06:00", "utc": "2004-02-05T18:28:50Z", "ms": 1076005730321.7007 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-02-06", "window": { "start": { "local": "2004-02-06T11:40:55-06:00", "utc": "2004-02-06T17:40:55Z", "ms": 1076089254994.763 }, "end": { "local": "2004-02-06T12:28:55-06:00", "utc": "2004-02-06T18:28:55Z", "ms": 1076092134994.763 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 02:12 on Thu 5 Feb to 02:47 on Fri 6 Feb.", "fact": "2004-02-05T08:11:40Z → 2004-02-06T08:46:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 5th, 11:41–12:29 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32041 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Chicago, 2004: Thursday 5 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": "2004-02-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-02-05", "confidence": "determinate" } ], "quote": "In Chicago, Māghī Pūrṇimā 2004 falls on Thursday 5 February. Pūrṇimā runs from 02:12 on Thu 5 Feb to 02:47 on Fri 6 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/sankashta-chaturthi?on=2004-02-09", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-02-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13918, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-02-09T01:53:27-06:00", "utc": "2004-02-09T07:53:27Z", "ms": 1076313206628.5939 }, "end": { "local": "2004-02-10T00:55:29-06:00", "utc": "2004-02-10T06:55:29Z", "ms": 1076396129259.8276 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2004-02-09T01:53:27-06:00", "utc": "2004-02-09T07:53:27Z", "ms": 1076313206628.5939 }, "end": { "local": "2004-02-10T00:55:29-06:00", "utc": "2004-02-10T06:55:29Z", "ms": 1076396129259.8276 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-02-08", "window": { "start": { "local": "2004-02-08T19:54:02-06:00", "utc": "2004-02-09T01:54:02Z", "ms": 1076291641863.8319 }, "end": { "local": "2004-02-08T19:54:02-06:00", "utc": "2004-02-09T01:54:02Z", "ms": 1076291641863.8319 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-02-09", "window": { "start": { "local": "2004-02-09T21:03:31-06:00", "utc": "2004-02-10T03:03:31Z", "ms": 1076382210985.6002 }, "end": { "local": "2004-02-09T21:03:31-06:00", "utc": "2004-02-10T03:03:31Z", "ms": 1076382210985.6002 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:53 on Mon 9 Feb to 00:55 on Tue 10 Feb.", "fact": "2004-02-09T07:53:27Z → 2004-02-10T06:55:29Z" }, { "step": "kaala", "text": "Moonrise is at 19:54 on the 8th and 21:04 on the 9th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 8th and is on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13918 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2004: Monday 9 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": "2004-02-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-02-09", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2004 falls on Monday 9 February. Caturthī runs from 01:53 on Mon 9 Feb to 00:55 on Tue 10 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/sankashta-chaturthi?on=2004-02-09", "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/2004/ekadashi?on=2004-02-16", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-02-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18713, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-02-15T14:20:19-06:00", "utc": "2004-02-15T20:20:19Z", "ms": 1076876418989.224 }, "end": { "local": "2004-02-16T11:57:51-06:00", "utc": "2004-02-16T17:57:51Z", "ms": 1076954270608.5264 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2004-02-15T14:20:19-06:00", "utc": "2004-02-15T20:20:19Z", "ms": 1076876418989.224 }, "end": { "local": "2004-02-16T11:57:51-06:00", "utc": "2004-02-16T17:57:51Z", "ms": 1076954270608.5264 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-02-15", "window": { "start": { "local": "2004-02-15T06:47:19-06:00", "utc": "2004-02-15T12:47:19Z", "ms": 1076849239205.3903 }, "end": { "local": "2004-02-15T06:47:19-06:00", "utc": "2004-02-15T12:47:19Z", "ms": 1076849239205.3903 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-02-16", "window": { "start": { "local": "2004-02-16T06:45:58-06:00", "utc": "2004-02-16T12:45:58Z", "ms": 1076935557703.3197 }, "end": { "local": "2004-02-16T06:45:58-06:00", "utc": "2004-02-16T12:45:58Z", "ms": 1076935557703.3197 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:20 on Sun 15 Feb to 11:58 on Mon 16 Feb.", "fact": "2004-02-15T20:20:19Z → 2004-02-16T17:57:51Z" }, { "step": "kaala", "text": "Sunrise is at 06:47 on the 15th and 06:46 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 15th and is on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18713 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Chicago, 2004: Monday 16 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": "2004-02-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-02-16", "confidence": "determinate" } ], "quote": "In Chicago, Vijayā Ekādaśī 2004 falls on Monday 16 February. Ekādaśī runs from 14:20 on Sun 15 Feb to 11:58 on Mon 16 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-02-16", "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/2004/pradosha-vrata?on=2004-02-17", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-02-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28313, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-02-17T09:33:23-06:00", "utc": "2004-02-17T15:33:23Z", "ms": 1077032002589.9095 }, "end": { "local": "2004-02-18T07:13:19-06:00", "utc": "2004-02-18T13:13:19Z", "ms": 1077109999273.4551 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2004-02-17T09:33:23-06:00", "utc": "2004-02-17T15:33:23Z", "ms": 1077032002589.9095 }, "end": { "local": "2004-02-18T07:13:19-06:00", "utc": "2004-02-18T13:13:19Z", "ms": 1077109999273.4551 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-02-17", "window": { "start": { "local": "2004-02-17T17:25:16-06:00", "utc": "2004-02-17T23:25:16Z", "ms": 1077060316030.9364 }, "end": { "local": "2004-02-17T19:11:39-06:00", "utc": "2004-02-18T01:11:39Z", "ms": 1077066699385.9233 } }, "covered_min": 106, "window_min": 106, "qualifies": true }, { "local_date": "2004-02-18", "window": { "start": { "local": "2004-02-18T17:26:31-06:00", "utc": "2004-02-18T23:26:31Z", "ms": 1077146791243.7543 }, "end": { "local": "2004-02-18T19:12:33-06:00", "utc": "2004-02-19T01:12:33Z", "ms": 1077153153244.959 } }, "covered_min": 0, "window_min": 106, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 09:33 on Tue 17 Feb to 07:13 on Wed 18 Feb.", "fact": "2004-02-17T15:33:23Z → 2004-02-18T13:13:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:25–19:12 on the 17th, 17:27–19:13 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 106 of 106 minutes on the 17th and 0 of 106 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28313 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2004: Tuesday 17 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": "2004-02-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-02-17", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2004 falls on Tuesday 17 February. Trayodaśī runs from 09:33 on Tue 17 Feb to 07:13 on Wed 18 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-02-17", "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/2004/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-02-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16629, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-02-18T07:13:19-06:00", "utc": "2004-02-18T13:13:19Z", "ms": 1077109999273.4551 }, "end": { "local": "2004-02-19T05:05:18-06:00", "utc": "2004-02-19T11:05:18Z", "ms": 1077188718210.9868 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2004-02-18T07:13:19-06:00", "utc": "2004-02-18T13:13:19Z", "ms": 1077109999273.4551 }, "end": { "local": "2004-02-19T05:05:18-06:00", "utc": "2004-02-19T11:05:18Z", "ms": 1077188718210.9868 } }, "kaala": "nishita", "days": [ { "local_date": "2004-02-17", "window": { "start": { "local": "2004-02-17T23:40:14-06:00", "utc": "2004-02-18T05:40:14Z", "ms": 1077082813612.1375 }, "end": { "local": "2004-02-18T00:28:14-06:00", "utc": "2004-02-18T06:28:14Z", "ms": 1077085693612.1375 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-02-18", "window": { "start": { "local": "2004-02-18T23:40:09-06:00", "utc": "2004-02-19T05:40:09Z", "ms": 1077169208748.2719 }, "end": { "local": "2004-02-19T00:28:09-06:00", "utc": "2004-02-19T06:28:09Z", "ms": 1077172088748.2719 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 07:13 on Wed 18 Feb to 05:05 on Thu 19 Feb.", "fact": "2004-02-18T13:13:19Z → 2004-02-19T11:05:18Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:40–00:28 on the 17th, 23:40–00:28 on the 18th.", "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 17th and 48 of 48 on the 18th.", "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 16629 s" }, { "step": "ruling", "text": "Mahāśivarātri, Chicago, 2004: Wednesday 18 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "maha-shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Mahasivaratri (nisithavyapini) — In some opinion it is to be observed on nisitha and in some opinion on pradosa. If occurs on two successive nisithas then according to Hemadri it is to be observed on the first day and according to Madhava, to be observed on the second day" } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "disputed", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-02-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-02-18", "confidence": "determinate" } ], "quote": "In Chicago, Mahāśivarātri 2004 falls on Wednesday 18 February. Caturdaśī runs from 07:13 on Wed 18 Feb to 05:05 on Thu 19 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/vinayaka-chaturthi?on=2004-02-23", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-02-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34709, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-02-23T01:16:43-06:00", "utc": "2004-02-23T07:16:43Z", "ms": 1077520602808.07 }, "end": { "local": "2004-02-24T02:01:43-06:00", "utc": "2004-02-24T08:01:43Z", "ms": 1077609702540.4286 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2004-02-23T01:16:43-06:00", "utc": "2004-02-23T07:16:43Z", "ms": 1077520602808.07 }, "end": { "local": "2004-02-24T02:01:43-06:00", "utc": "2004-02-24T08:01:43Z", "ms": 1077609702540.4286 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-02-23", "window": { "start": { "local": "2004-02-23T11:40:20-06:00", "utc": "2004-02-23T17:40:20Z", "ms": 1077558019601.5452 }, "end": { "local": "2004-02-23T12:28:20-06:00", "utc": "2004-02-23T18:28:20Z", "ms": 1077560899601.5452 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-02-24", "window": { "start": { "local": "2004-02-24T11:40:11-06:00", "utc": "2004-02-24T17:40:11Z", "ms": 1077644411340.6736 }, "end": { "local": "2004-02-24T12:28:11-06:00", "utc": "2004-02-24T18:28:11Z", "ms": 1077647291340.6736 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:17 on Mon 23 Feb to 02:02 on Tue 24 Feb.", "fact": "2004-02-23T07:16:43Z → 2004-02-24T08:01:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 23rd, 11:40–12:28 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 23rd and 0 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34709 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2004: Monday 23 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-02-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-02-23", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2004 falls on Monday 23 February. Caturthī runs from 01:17 on Mon 23 Feb to 02:02 on Tue 24 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/vinayaka-chaturthi?on=2004-02-23", "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/2004/ekadashi?on=2004-03-02", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32517, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-03-01T15:27:05-06:00", "utc": "2004-03-01T21:27:05Z", "ms": 1078176425110.4895 }, "end": { "local": "2004-03-02T17:05:18-06:00", "utc": "2004-03-02T23:05:18Z", "ms": 1078268718343.3646 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2004-03-01T15:27:05-06:00", "utc": "2004-03-01T21:27:05Z", "ms": 1078176425110.4895 }, "end": { "local": "2004-03-02T17:05:18-06:00", "utc": "2004-03-02T23:05:18Z", "ms": 1078268718343.3646 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-03-01", "window": { "start": { "local": "2004-03-01T06:25:08-06:00", "utc": "2004-03-01T12:25:08Z", "ms": 1078143908009.0881 }, "end": { "local": "2004-03-01T06:25:08-06:00", "utc": "2004-03-01T12:25:08Z", "ms": 1078143908009.0881 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-03-02", "window": { "start": { "local": "2004-03-02T06:23:32-06:00", "utc": "2004-03-02T12:23:32Z", "ms": 1078230212345.1318 }, "end": { "local": "2004-03-02T06:23:32-06:00", "utc": "2004-03-02T12:23:32Z", "ms": 1078230212345.1318 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:27 on Mon 1 Mar to 17:05 on Tue 2 Mar.", "fact": "2004-03-01T21:27:05Z → 2004-03-02T23:05:18Z" }, { "step": "kaala", "text": "Sunrise is at 06:25 on the 1st and 06:24 on the 2nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 1st and is on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32517 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Chicago, 2004: Tuesday 2 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": "2004-03-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-02", "confidence": "determinate" } ], "quote": "In Chicago, Āmalakī Ekādaśī 2004 falls on Tuesday 2 March. Ekādaśī runs from 15:27 on Mon 1 Mar to 17:05 on Tue 2 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-03-02", "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/2004/pradosha-vrata?on=2004-03-03", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-03", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1276, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-03-03T18:04:49-06:00", "utc": "2004-03-04T00:04:49Z", "ms": 1078358688650.2623 }, "end": { "local": "2004-03-04T18:24:10-06:00", "utc": "2004-03-05T00:24:10Z", "ms": 1078446250188.4441 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2004-03-03T18:04:49-06:00", "utc": "2004-03-04T00:04:49Z", "ms": 1078358688650.2623 }, "end": { "local": "2004-03-04T18:24:10-06:00", "utc": "2004-03-05T00:24:10Z", "ms": 1078446250188.4441 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-03-03", "window": { "start": { "local": "2004-03-03T17:43:33-06:00", "utc": "2004-03-03T23:43:33Z", "ms": 1078357413087.8339 }, "end": { "local": "2004-03-03T19:24:27-06:00", "utc": "2004-03-04T01:24:27Z", "ms": 1078363467216.0942 } }, "covered_min": 80, "window_min": 101, "qualifies": true }, { "local_date": "2004-03-04", "window": { "start": { "local": "2004-03-04T17:44:44-06:00", "utc": "2004-03-04T23:44:44Z", "ms": 1078443883732.8271 }, "end": { "local": "2004-03-04T19:25:15-06:00", "utc": "2004-03-05T01:25:15Z", "ms": 1078449915433.5586 } }, "covered_min": 39, "window_min": 101, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:05 on Wed 3 Mar to 18:24 on Thu 4 Mar.", "fact": "2004-03-04T00:04:49Z → 2004-03-05T00:24:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:44–19:24 on the 3rd, 17:45–19:25 on the 4th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 80 of 101 minutes on the 3rd and 39 of 101 on the 4th.", "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 1276 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2004: Wednesday 3 March.", "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": "2004-03-03", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-03", "confidence": "boundary" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2004 falls on Wednesday 3 March. Trayodaśī runs from 18:05 on Wed 3 Mar to 18:24 on Thu 4 Mar and covers 80 of 101 minutes of pradoṣa that evening. It also reaches the next evening for 39 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/2004/pradosha-vrata?on=2004-03-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1188, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-03-05T18:05:43-06:00", "utc": "2004-03-06T00:05:43Z", "ms": 1078531542537.389 }, "end": { "local": "2004-03-06T17:14:16-06:00", "utc": "2004-03-06T23:14:16Z", "ms": 1078614856451.0642 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2004-03-05T18:05:43-06:00", "utc": "2004-03-06T00:05:43Z", "ms": 1078531542537.389 }, "end": { "local": "2004-03-06T17:14:16-06:00", "utc": "2004-03-06T23:14:16Z", "ms": 1078614856451.0642 } }, "kaala": "sayahna", "days": [ { "local_date": "2004-03-05", "window": { "start": { "local": "2004-03-05T15:28:28-06:00", "utc": "2004-03-05T21:28:28Z", "ms": 1078522107566.1909 }, "end": { "local": "2004-03-05T17:45:54-06:00", "utc": "2004-03-05T23:45:54Z", "ms": 1078530354085.6603 } }, "covered_min": 0, "window_min": 137, "qualifies": false }, { "local_date": "2004-03-06", "window": { "start": { "local": "2004-03-06T15:29:04-06:00", "utc": "2004-03-06T21:29:04Z", "ms": 1078608543998.4148 }, "end": { "local": "2004-03-06T17:47:04-06:00", "utc": "2004-03-06T23:47:04Z", "ms": 1078616824157.0215 } }, "covered_min": 105, "window_min": 138, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:06 on Fri 5 Mar to 17:14 on Sat 6 Mar.", "fact": "2004-03-06T00:05:43Z → 2004-03-06T23:14:16Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:28–17:46 on the 5th, 15:29–17:47 on the 6th.", "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 137 minutes on the 5th and 105 of 138 on the 6th.", "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 1188 s" }, { "step": "ruling", "text": "Holikā Dahana, Chicago, 2004: Saturday 6 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": "2004-03-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-06", "confidence": "determinate" } ], "quote": "In Chicago, Holikā Dahana 2004 falls on Saturday 6 March. Pūrṇimā runs from 18:06 on Fri 5 Mar to 17:14 on Sat 6 Mar and covers 105 of 138 minutes of sāyāhna that late afternoon.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1188, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-03-05T18:05:43-06:00", "utc": "2004-03-06T00:05:43Z", "ms": 1078531542537.389 }, "end": { "local": "2004-03-06T17:14:16-06:00", "utc": "2004-03-06T23:14:16Z", "ms": 1078614856451.0642 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2004-03-05T18:05:43-06:00", "utc": "2004-03-06T00:05:43Z", "ms": 1078531542537.389 }, "end": { "local": "2004-03-06T17:14:16-06:00", "utc": "2004-03-06T23:14:16Z", "ms": 1078614856451.0642 } }, "kaala": "sayahna", "days": [ { "local_date": "2004-03-05", "window": { "start": { "local": "2004-03-05T15:28:28-06:00", "utc": "2004-03-05T21:28:28Z", "ms": 1078522107566.1909 }, "end": { "local": "2004-03-05T17:45:54-06:00", "utc": "2004-03-05T23:45:54Z", "ms": 1078530354085.6603 } }, "covered_min": 0, "window_min": 137, "qualifies": false }, { "local_date": "2004-03-06", "window": { "start": { "local": "2004-03-06T15:29:04-06:00", "utc": "2004-03-06T21:29:04Z", "ms": 1078608543998.4148 }, "end": { "local": "2004-03-06T17:47:04-06:00", "utc": "2004-03-06T23:47:04Z", "ms": 1078616824157.0215 } }, "covered_min": 105, "window_min": 138, "qualifies": true } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "2004-03-06", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:06 on Fri 5 Mar to 17:14 on Sat 6 Mar.", "fact": "2004-03-06T00:05:43Z → 2004-03-06T23:14:16Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:28–17:46 on the 5th, 15:29–17:47 on the 6th.", "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 137 minutes on the 5th and 105 of 138 on the 6th.", "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 1188 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Saturday 6 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Chicago, 2004: Sunday 7 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": "2004-03-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-07", "confidence": "determinate" } ], "quote": "In Chicago, Holī 2004 falls on Sunday 7 March. It is kept the day after Holikā Dahana, which falls on Saturday 6 March. Pūrṇimā runs from 18:06 on Fri 5 Mar to 17:14 on Sat 6 Mar and covers 105 of 138 minutes of sāyāhna on the 6th.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34837, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2004-03-06T17:14:16-06:00", "utc": "2004-03-06T23:14:16Z", "ms": 1078614856451.0642 }, "end": { "local": "2004-03-07T15:56:02-06:00", "utc": "2004-03-07T21:56:02Z", "ms": 1078696562168.0216 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-06T17:14:16-06:00", "utc": "2004-03-06T23:14:16Z", "ms": 1078614856451.0642 }, "end": { "local": "2004-03-07T15:56:02-06:00", "utc": "2004-03-07T21:56:02Z", "ms": 1078696562168.0216 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-03-06", "window": { "start": { "local": "2004-03-06T06:17:03-06:00", "utc": "2004-03-06T12:17:03Z", "ms": 1078575423363.988 }, "end": { "local": "2004-03-06T06:17:03-06:00", "utc": "2004-03-06T12:17:03Z", "ms": 1078575423363.988 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-03-07", "window": { "start": { "local": "2004-03-07T06:15:25-06:00", "utc": "2004-03-07T12:15:25Z", "ms": 1078661724711.2607 }, "end": { "local": "2004-03-07T06:15:25-06:00", "utc": "2004-03-07T12:15:25Z", "ms": 1078661724711.2607 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 17:14 on Sat 6 Mar to 15:56 on Sun 7 Mar.", "fact": "2004-03-06T23:14:16Z → 2004-03-07T21:56:02Z" }, { "step": "kaala", "text": "Sunrise is at 06:17 on the 6th and 06:15 on the 7th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā 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: purvaviddha → only-day · margin 34837 s" }, { "step": "ruling", "text": "Vasantotsava, Chicago, 2004: Sunday 7 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": "2004-03-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-07", "confidence": "determinate" } ], "quote": "In Chicago, Vasantotsava 2004 falls on Sunday 7 March. Pratipadā runs from 17:14 on Sat 6 Mar to 15:56 on Sun 7 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/sankashta-chaturthi?on=2004-03-09", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31849, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-03-09T12:24:50-06:00", "utc": "2004-03-09T18:24:50Z", "ms": 1078856689769.5262 }, "end": { "local": "2004-03-10T10:23:18-06:00", "utc": "2004-03-10T16:23:18Z", "ms": 1078935798026.0262 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-09T12:24:50-06:00", "utc": "2004-03-09T18:24:50Z", "ms": 1078856689769.5262 }, "end": { "local": "2004-03-10T10:23:18-06:00", "utc": "2004-03-10T16:23:18Z", "ms": 1078935798026.0262 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-03-09", "window": { "start": { "local": "2004-03-09T21:15:39-06:00", "utc": "2004-03-10T03:15:39Z", "ms": 1078888538811.5343 }, "end": { "local": "2004-03-09T21:15:39-06:00", "utc": "2004-03-10T03:15:39Z", "ms": 1078888538811.5343 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-03-10", "window": { "start": { "local": "2004-03-10T22:31:28-06:00", "utc": "2004-03-11T04:31:28Z", "ms": 1078979488299.4257 }, "end": { "local": "2004-03-10T22:31:28-06:00", "utc": "2004-03-11T04:31:28Z", "ms": 1078979488299.4257 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:25 on Tue 9 Mar to 10:23 on Wed 10 Mar.", "fact": "2004-03-09T18:24:50Z → 2004-03-10T16:23:18Z" }, { "step": "kaala", "text": "Moonrise is at 21:16 on the 9th and 22:31 on the 10th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 9th and is not on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31849 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2004: Tuesday 9 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-03-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-09", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2004 falls on Tuesday 9 March. Caturthī runs from 12:25 on Tue 9 Mar to 10:23 on Wed 10 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/sankashta-chaturthi?on=2004-03-09", "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/2004/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27193, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2004-03-13T04:03:03-06:00", "utc": "2004-03-13T10:03:03Z", "ms": 1079172182705.024 }, "end": { "local": "2004-03-14T01:59:18-06:00", "utc": "2004-03-14T07:59:18Z", "ms": 1079251157694.8066 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-13T04:03:03-06:00", "utc": "2004-03-13T10:03:03Z", "ms": 1079172182705.024 }, "end": { "local": "2004-03-14T01:59:18-06:00", "utc": "2004-03-14T07:59:18Z", "ms": 1079251157694.8066 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-03-13", "window": { "start": { "local": "2004-03-13T11:36:16-06:00", "utc": "2004-03-13T17:36:16Z", "ms": 1079199375728.072 }, "end": { "local": "2004-03-13T12:24:16-06:00", "utc": "2004-03-13T18:24:16Z", "ms": 1079202255728.072 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-03-14", "window": { "start": { "local": "2004-03-14T11:35:59-06:00", "utc": "2004-03-14T17:35:59Z", "ms": 1079285759161.4443 }, "end": { "local": "2004-03-14T12:23:59-06:00", "utc": "2004-03-14T18:23:59Z", "ms": 1079288639161.4443 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 04:03 on Sat 13 Mar to 01:59 on Sun 14 Mar.", "fact": "2004-03-13T10:03:03Z → 2004-03-14T07:59:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 13th, 11:36–12:24 on the 14th.", "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 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 27193 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Chicago, 2004: Saturday 13 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": "2004-03-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-13", "confidence": "determinate" } ], "quote": "In Chicago, Śītalāṣṭamī 2004 falls on Saturday 13 March. Aṣṭamī runs from 04:03 on Sat 13 Mar to 01:59 on Sun 14 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-03-16", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28334, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-03-15T22:08:04-06:00", "utc": "2004-03-16T04:08:04Z", "ms": 1079410084471.6052 }, "end": { "local": "2004-03-16T20:25:47-06:00", "utc": "2004-03-17T02:25:47Z", "ms": 1079490347456.0917 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-15T22:08:04-06:00", "utc": "2004-03-16T04:08:04Z", "ms": 1079410084471.6052 }, "end": { "local": "2004-03-16T20:25:47-06:00", "utc": "2004-03-17T02:25:47Z", "ms": 1079490347456.0917 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-03-16", "window": { "start": { "local": "2004-03-16T06:00:19-06:00", "utc": "2004-03-16T12:00:19Z", "ms": 1079438418574.4935 }, "end": { "local": "2004-03-16T06:00:19-06:00", "utc": "2004-03-16T12:00:19Z", "ms": 1079438418574.4935 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-03-17", "window": { "start": { "local": "2004-03-17T05:58:36-06:00", "utc": "2004-03-17T11:58:36Z", "ms": 1079524716453.6099 }, "end": { "local": "2004-03-17T05:58:36-06:00", "utc": "2004-03-17T11:58:36Z", "ms": 1079524716453.6099 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:08 on Mon 15 Mar to 20:26 on Tue 16 Mar.", "fact": "2004-03-16T04:08:04Z → 2004-03-17T02:25:47Z" }, { "step": "kaala", "text": "Sunrise is at 06:00 on the 16th and 05:59 on the 17th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 16th and is not on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28334 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Chicago, 2004: Tuesday 16 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": "2004-03-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-16", "confidence": "determinate" } ], "quote": "In Chicago, Pāpamocanī Ekādaśī 2004 falls on Tuesday 16 March. Ekādaśī runs from 22:08 on Mon 15 Mar to 20:26 on Tue 16 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-03-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/pradosha-vrata?on=2004-03-17", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 837, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-03-17T18:57:11-06:00", "utc": "2004-03-18T00:57:11Z", "ms": 1079571430841.1803 }, "end": { "local": "2004-03-18T17:46:50-06:00", "utc": "2004-03-18T23:46:50Z", "ms": 1079653610435.7192 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-17T18:57:11-06:00", "utc": "2004-03-18T00:57:11Z", "ms": 1079571430841.1803 }, "end": { "local": "2004-03-18T17:46:50-06:00", "utc": "2004-03-18T23:46:50Z", "ms": 1079653610435.7192 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-03-17", "window": { "start": { "local": "2004-03-17T17:59:40-06:00", "utc": "2004-03-17T23:59:40Z", "ms": 1079567979968.2289 }, "end": { "local": "2004-03-17T19:35:18-06:00", "utc": "2004-03-18T01:35:18Z", "ms": 1079573717860.0359 } }, "covered_min": 38, "window_min": 96, "qualifies": true }, { "local_date": "2004-03-18", "window": { "start": { "local": "2004-03-18T18:00:48-06:00", "utc": "2004-03-19T00:00:48Z", "ms": 1079654447583.661 }, "end": { "local": "2004-03-18T19:36:03-06:00", "utc": "2004-03-19T01:36:03Z", "ms": 1079660162800.864 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:57 on Wed 17 Mar to 17:47 on Thu 18 Mar.", "fact": "2004-03-18T00:57:11Z → 2004-03-18T23:46:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:00–19:35 on the 17th, 18:01–19:36 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 38 of 96 minutes on the 17th and 0 of 95 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 837 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2004: Wednesday 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": "2004-03-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-17", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2004 falls on Wednesday 17 March. Trayodaśī runs from 18:57 on Wed 17 Mar to 17:47 on Thu 18 Mar and covers 38 of 96 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-03-17", "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/2004/shivaratri?on=2004-03-18", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20829, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-03-18T17:46:50-06:00", "utc": "2004-03-18T23:46:50Z", "ms": 1079653610435.7192 }, "end": { "local": "2004-03-19T16:59:52-06:00", "utc": "2004-03-19T22:59:52Z", "ms": 1079737192121.2274 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-18T17:46:50-06:00", "utc": "2004-03-18T23:46:50Z", "ms": 1079653610435.7192 }, "end": { "local": "2004-03-19T16:59:52-06:00", "utc": "2004-03-19T22:59:52Z", "ms": 1079737192121.2274 } }, "kaala": "nishita", "days": [ { "local_date": "2004-03-18", "window": { "start": { "local": "2004-03-18T23:34:00-06:00", "utc": "2004-03-19T05:34:00Z", "ms": 1079674439648.1722 }, "end": { "local": "2004-03-19T00:22:00-06:00", "utc": "2004-03-19T06:22:00Z", "ms": 1079677319648.1722 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-03-19", "window": { "start": { "local": "2004-03-19T23:33:42-06:00", "utc": "2004-03-20T05:33:42Z", "ms": 1079760822097.9326 }, "end": { "local": "2004-03-20T00:21:42-06:00", "utc": "2004-03-20T06:21:42Z", "ms": 1079763702097.9326 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:47 on Thu 18 Mar to 17:00 on Fri 19 Mar.", "fact": "2004-03-18T23:46:50Z → 2004-03-19T22:59:52Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:34–00:22 on the 18th, 23:34–00:22 on the 19th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20829 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2004: Thursday 18 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-03-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-18", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2004 falls on Thursday 18 March. Caturdaśī runs from 17:47 on Thu 18 Mar to 17:00 on Fri 19 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/shivaratri?on=2004-03-18", "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/2004/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15545, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2004-03-20T16:41:21-06:00", "utc": "2004-03-20T22:41:21Z", "ms": 1079822481057.9146 }, "end": { "local": "2004-03-21T16:55:38-06:00", "utc": "2004-03-21T22:55:38Z", "ms": 1079909737958.1171 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-20T16:41:21-06:00", "utc": "2004-03-20T22:41:21Z", "ms": 1079822481057.9146 }, "end": { "local": "2004-03-21T16:55:38-06:00", "utc": "2004-03-21T22:55:38Z", "ms": 1079909737958.1171 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-03-20", "window": { "start": { "local": "2004-03-20T11:34:16-06:00", "utc": "2004-03-20T17:34:16Z", "ms": 1079804055755.3167 }, "end": { "local": "2004-03-20T12:22:16-06:00", "utc": "2004-03-20T18:22:16Z", "ms": 1079806935755.3167 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-03-21", "window": { "start": { "local": "2004-03-21T11:33:58-06:00", "utc": "2004-03-21T17:33:58Z", "ms": 1079890438014.5708 }, "end": { "local": "2004-03-21T12:21:58-06:00", "utc": "2004-03-21T18:21:58Z", "ms": 1079893318014.5708 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 16:41 on Sat 20 Mar to 16:56 on Sun 21 Mar.", "fact": "2004-03-20T22:41:21Z → 2004-03-21T22:55:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 20th, 11:34–12:22 on the 21st.", "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 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15545 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Chicago, 2004: Sunday 21 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha-caitra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-03-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-21", "confidence": "determinate" } ], "quote": "In Chicago, Navarātrārambha (Caitra) (Chaitra Navratri) 2004 falls on Sunday 21 March. Pratipadā runs from 16:41 on Sat 20 Mar to 16:56 on Sun 21 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19424, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2004-03-22T17:45:24-06:00", "utc": "2004-03-22T23:45:24Z", "ms": 1079999124233.8273 }, "end": { "local": "2004-03-23T19:10:41-06:00", "utc": "2004-03-24T01:10:41Z", "ms": 1080090641298.1957 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-22T17:45:24-06:00", "utc": "2004-03-22T23:45:24Z", "ms": 1079999124233.8273 }, "end": { "local": "2004-03-23T19:10:41-06:00", "utc": "2004-03-24T01:10:41Z", "ms": 1080090641298.1957 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-03-22", "window": { "start": { "local": "2004-03-22T11:33:40-06:00", "utc": "2004-03-22T17:33:40Z", "ms": 1079976820174.1248 }, "end": { "local": "2004-03-22T12:21:40-06:00", "utc": "2004-03-22T18:21:40Z", "ms": 1079979700174.1248 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-03-23", "window": { "start": { "local": "2004-03-23T11:33:22-06:00", "utc": "2004-03-23T17:33:22Z", "ms": 1080063202251.1906 }, "end": { "local": "2004-03-23T12:21:22-06:00", "utc": "2004-03-23T18:21:22Z", "ms": 1080066082251.1906 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 17:45 on Mon 22 Mar to 19:11 on Tue 23 Mar.", "fact": "2004-03-22T23:45:24Z → 2004-03-24T01:10:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 22nd, 11:33–12:21 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 22nd and 48 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19424 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Chicago, 2004: Tuesday 23 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gauri-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-03-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-23", "confidence": "determinate" } ], "quote": "In Chicago, Gaurī Tṛtīyā (Gangaur) 2004 falls on Tuesday 23 March. Tṛtīyā runs from 17:45 on Mon 22 Mar to 19:11 on Tue 23 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19424, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2004-03-22T17:45:24-06:00", "utc": "2004-03-22T23:45:24Z", "ms": 1079999124233.8273 }, "end": { "local": "2004-03-23T19:10:41-06:00", "utc": "2004-03-24T01:10:41Z", "ms": 1080090641298.1957 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-22T17:45:24-06:00", "utc": "2004-03-22T23:45:24Z", "ms": 1079999124233.8273 }, "end": { "local": "2004-03-23T19:10:41-06:00", "utc": "2004-03-24T01:10:41Z", "ms": 1080090641298.1957 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-03-22", "window": { "start": { "local": "2004-03-22T11:33:40-06:00", "utc": "2004-03-22T17:33:40Z", "ms": 1079976820174.1248 }, "end": { "local": "2004-03-22T12:21:40-06:00", "utc": "2004-03-22T18:21:40Z", "ms": 1079979700174.1248 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-03-23", "window": { "start": { "local": "2004-03-23T11:33:22-06:00", "utc": "2004-03-23T17:33:22Z", "ms": 1080063202251.1906 }, "end": { "local": "2004-03-23T12:21:22-06:00", "utc": "2004-03-23T18:21:22Z", "ms": 1080066082251.1906 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 17:45 on Mon 22 Mar to 19:11 on Tue 23 Mar.", "fact": "2004-03-22T23:45:24Z → 2004-03-24T01:10:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 22nd, 11:33–12:21 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 22nd and 48 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19424 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Chicago, 2004: Tuesday 23 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "saubhagya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-03-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-23", "confidence": "determinate" } ], "quote": "In Chicago, Saubhāgya Śayana Vrata 2004 falls on Tuesday 23 March. Tṛtīyā runs from 17:45 on Mon 22 Mar to 19:11 on Tue 23 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/vinayaka-chaturthi?on=2004-03-24", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24559, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-03-23T19:10:41-06:00", "utc": "2004-03-24T01:10:41Z", "ms": 1080090641298.1957 }, "end": { "local": "2004-03-24T21:07:55-06:00", "utc": "2004-03-25T03:07:55Z", "ms": 1080184075460.9939 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-23T19:10:41-06:00", "utc": "2004-03-24T01:10:41Z", "ms": 1080090641298.1957 }, "end": { "local": "2004-03-24T21:07:55-06:00", "utc": "2004-03-25T03:07:55Z", "ms": 1080184075460.9939 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-03-23", "window": { "start": { "local": "2004-03-23T11:33:22-06:00", "utc": "2004-03-23T17:33:22Z", "ms": 1080063202251.1906 }, "end": { "local": "2004-03-23T12:21:22-06:00", "utc": "2004-03-23T18:21:22Z", "ms": 1080066082251.1906 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-03-24", "window": { "start": { "local": "2004-03-24T11:33:04-06:00", "utc": "2004-03-24T17:33:04Z", "ms": 1080149584263.3416 }, "end": { "local": "2004-03-24T12:21:04-06:00", "utc": "2004-03-24T18:21:04Z", "ms": 1080152464263.3416 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:11 on Tue 23 Mar to 21:08 on Wed 24 Mar.", "fact": "2004-03-24T01:10:41Z → 2004-03-25T03:07:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 23rd, 11:33–12:21 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24559 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2004: Wednesday 24 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": "2004-03-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-24", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2004 falls on Wednesday 24 March. Caturthī runs from 19:11 on Tue 23 Mar to 21:08 on Wed 24 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/vinayaka-chaturthi?on=2004-03-24", "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/2004/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31611, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2004-03-24T21:07:55-06:00", "utc": "2004-03-25T03:07:55Z", "ms": 1080184075460.9939 }, "end": { "local": "2004-03-25T23:29:27-06:00", "utc": "2004-03-26T05:29:27Z", "ms": 1080278966950.1282 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-24T21:07:55-06:00", "utc": "2004-03-25T03:07:55Z", "ms": 1080184075460.9939 }, "end": { "local": "2004-03-25T23:29:27-06:00", "utc": "2004-03-26T05:29:27Z", "ms": 1080278966950.1282 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-03-24", "window": { "start": { "local": "2004-03-24T11:33:04-06:00", "utc": "2004-03-24T17:33:04Z", "ms": 1080149584263.3416 }, "end": { "local": "2004-03-24T12:21:04-06:00", "utc": "2004-03-24T18:21:04Z", "ms": 1080152464263.3416 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-03-25", "window": { "start": { "local": "2004-03-25T11:32:46-06:00", "utc": "2004-03-25T17:32:46Z", "ms": 1080235966228.5295 }, "end": { "local": "2004-03-25T12:20:46-06:00", "utc": "2004-03-25T18:20:46Z", "ms": 1080238846228.5295 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 21:08 on Wed 24 Mar to 23:29 on Thu 25 Mar.", "fact": "2004-03-25T03:07:55Z → 2004-03-26T05:29:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 24th, 11:33–12:21 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31611 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Chicago, 2004: Thursday 25 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "lakshmi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri pancami or Laksmi pancami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-25", "confidence": "determinate" } ], "quote": "In Chicago, Lakṣmī Pañcamī 2004 falls on Thursday 25 March. Pañcamī runs from 21:08 on Wed 24 Mar to 23:29 on Thu 25 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16697, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2004-03-28T04:36:37-06:00", "utc": "2004-03-28T10:36:37Z", "ms": 1080470197081.4264 }, "end": { "local": "2004-03-29T06:53:17-06:00", "utc": "2004-03-29T12:53:17Z", "ms": 1080564797308.0363 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-28T04:36:37-06:00", "utc": "2004-03-28T10:36:37Z", "ms": 1080470197081.4264 }, "end": { "local": "2004-03-29T06:53:17-06:00", "utc": "2004-03-29T12:53:17Z", "ms": 1080564797308.0363 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-03-28", "window": { "start": { "local": "2004-03-28T11:31:52-06:00", "utc": "2004-03-28T17:31:52Z", "ms": 1080495112027.0481 }, "end": { "local": "2004-03-28T12:19:52-06:00", "utc": "2004-03-28T18:19:52Z", "ms": 1080497992027.0481 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-03-29", "window": { "start": { "local": "2004-03-29T11:31:34-06:00", "utc": "2004-03-29T17:31:34Z", "ms": 1080581493990.6556 }, "end": { "local": "2004-03-29T12:19:34-06:00", "utc": "2004-03-29T18:19:34Z", "ms": 1080584373990.6556 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 04:37 on Sun 28 Mar to 06:53 on Mon 29 Mar.", "fact": "2004-03-28T10:36:37Z → 2004-03-29T12:53:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 28th, 11:32–12:20 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16697 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Chicago, 2004: Sunday 28 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhavani-utpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Annapurna puja (Beng.) (paraviddha), Bhavani-utpatti (paraviddha), Asokastami (Special when combined with naks. Punarvasu and Wednesday, after mid-day)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-03-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-28", "confidence": "determinate" } ], "quote": "In Chicago, Bhavānī Utpatti 2004 falls on Sunday 28 March. Aṣṭamī runs from 04:37 on Sun 28 Mar to 06:53 on Mon 29 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-03-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10238, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2004-03-29T06:53:17-06:00", "utc": "2004-03-29T12:53:17Z", "ms": 1080564797308.0363 }, "end": { "local": "2004-03-30T08:40:38-06:00", "utc": "2004-03-30T14:40:38Z", "ms": 1080657637573.6498 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-29T06:53:17-06:00", "utc": "2004-03-29T12:53:17Z", "ms": 1080564797308.0363 }, "end": { "local": "2004-03-30T08:40:38-06:00", "utc": "2004-03-30T14:40:38Z", "ms": 1080657637573.6498 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-03-29", "window": { "start": { "local": "2004-03-29T11:31:34-06:00", "utc": "2004-03-29T17:31:34Z", "ms": 1080581493990.6556 }, "end": { "local": "2004-03-29T12:19:34-06:00", "utc": "2004-03-29T18:19:34Z", "ms": 1080584373990.6556 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-03-30", "window": { "start": { "local": "2004-03-30T11:31:16-06:00", "utc": "2004-03-30T17:31:16Z", "ms": 1080667876001.9465 }, "end": { "local": "2004-03-30T12:19:16-06:00", "utc": "2004-03-30T18:19:16Z", "ms": 1080670756001.9465 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 06:53 on Mon 29 Mar to 08:41 on Tue 30 Mar.", "fact": "2004-03-29T12:53:17Z → 2004-03-30T14:40:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 29th, 11:31–12:19 on the 30th.", "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 29th and 0 of 48 on the 30th.", "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 10238 s" }, { "step": "ruling", "text": "Rāma Navamī, Chicago, 2004: Monday 29 March.", "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": "2004-03-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-03-29", "confidence": "determinate" } ], "quote": "In Chicago, Rāma Navamī 2004 falls on Monday 29 March. Navamī runs from 06:53 on Mon 29 Mar to 08:41 on Tue 30 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-04-01", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15261, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-03-31T09:49:02-06:00", "utc": "2004-03-31T15:49:02Z", "ms": 1080748141898.0712 }, "end": { "local": "2004-04-01T10:13:21-06:00", "utc": "2004-04-01T16:13:21Z", "ms": 1080836000938.9757 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-03-31T09:49:02-06:00", "utc": "2004-03-31T15:49:02Z", "ms": 1080748141898.0712 }, "end": { "local": "2004-04-01T10:13:21-06:00", "utc": "2004-04-01T16:13:21Z", "ms": 1080836000938.9757 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-03-31", "window": { "start": { "local": "2004-03-31T05:34:41-06:00", "utc": "2004-03-31T11:34:41Z", "ms": 1080732881369.4233 }, "end": { "local": "2004-03-31T05:34:41-06:00", "utc": "2004-03-31T11:34:41Z", "ms": 1080732881369.4233 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-04-01", "window": { "start": { "local": "2004-04-01T05:33:00-06:00", "utc": "2004-04-01T11:33:00Z", "ms": 1080819179660.281 }, "end": { "local": "2004-04-01T05:33:00-06:00", "utc": "2004-04-01T11:33:00Z", "ms": 1080819179660.281 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:49 on Wed 31 Mar to 10:13 on Thu 1 Apr.", "fact": "2004-03-31T15:49:02Z → 2004-04-01T16:13:21Z" }, { "step": "kaala", "text": "Sunrise is at 05:35 on the 31st and 05:33 on the 1st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 31st and is on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15261 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Chicago, 2004: Thursday 1 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": "2004-04-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-01", "confidence": "determinate" } ], "quote": "In Chicago, Kāmadā Ekādaśī 2004 falls on Thursday 1 April. Ekādaśī runs from 09:49 on Wed 31 Mar to 10:13 on Thu 1 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-04-01", "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/2004/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5854, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-04-02T09:52:48-06:00", "utc": "2004-04-02T15:52:48Z", "ms": 1080921168413.7319 }, "end": { "local": "2004-04-03T08:50:17-06:00", "utc": "2004-04-03T14:50:17Z", "ms": 1081003816513.3658 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-04-02T09:52:48-06:00", "utc": "2004-04-02T15:52:48Z", "ms": 1080921168413.7319 }, "end": { "local": "2004-04-03T08:50:17-06:00", "utc": "2004-04-03T14:50:17Z", "ms": 1081003816513.3658 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-04-02", "window": { "start": { "local": "2004-04-02T11:30:23-06:00", "utc": "2004-04-02T17:30:23Z", "ms": 1080927022523.2375 }, "end": { "local": "2004-04-02T12:18:23-06:00", "utc": "2004-04-02T18:18:23Z", "ms": 1080929902523.2375 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-04-03", "window": { "start": { "local": "2004-04-03T11:30:05-06:00", "utc": "2004-04-03T17:30:05Z", "ms": 1081013404928.9673 }, "end": { "local": "2004-04-03T12:18:05-06:00", "utc": "2004-04-03T18:18:05Z", "ms": 1081016284928.9673 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 09:53 on Fri 2 Apr to 08:50 on Sat 3 Apr.", "fact": "2004-04-02T15:52:48Z → 2004-04-03T14:50:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 on the 2nd, 11:30–12:18 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 5854 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Chicago, 2004: Friday 2 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": "2004-04-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-02", "confidence": "determinate" } ], "quote": "In Chicago, Anaṅga Trayodaśī 2004 falls on Friday 2 April. Trayodaśī runs from 09:53 on Fri 2 Apr to 08:50 on Sat 3 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/pradosha-vrata?on=2004-04-02", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30278, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-04-02T09:52:48-06:00", "utc": "2004-04-02T15:52:48Z", "ms": 1080921168413.7319 }, "end": { "local": "2004-04-03T08:50:17-06:00", "utc": "2004-04-03T14:50:17Z", "ms": 1081003816513.3658 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-04-02T09:52:48-06:00", "utc": "2004-04-02T15:52:48Z", "ms": 1080921168413.7319 }, "end": { "local": "2004-04-03T08:50:17-06:00", "utc": "2004-04-03T14:50:17Z", "ms": 1081003816513.3658 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-04-02", "window": { "start": { "local": "2004-04-02T18:17:27-06:00", "utc": "2004-04-03T00:17:27Z", "ms": 1080951446825.0476 }, "end": { "local": "2004-04-02T19:47:04-06:00", "utc": "2004-04-03T01:47:04Z", "ms": 1080956824193.0015 } }, "covered_min": 90, "window_min": 90, "qualifies": true }, { "local_date": "2004-04-03", "window": { "start": { "local": "2004-04-03T18:18:33-06:00", "utc": "2004-04-04T00:18:33Z", "ms": 1081037912773.2328 }, "end": { "local": "2004-04-03T19:47:48-06:00", "utc": "2004-04-04T01:47:48Z", "ms": 1081043267907.7615 } }, "covered_min": 0, "window_min": 89, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 09:53 on Fri 2 Apr to 08:50 on Sat 3 Apr.", "fact": "2004-04-02T15:52:48Z → 2004-04-03T14:50:17Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:17–19:47 on the 2nd, 18:19–19:48 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 90 of 90 minutes on the 2nd and 0 of 89 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30278 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2004: Friday 2 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": "2004-04-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-02", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2004 falls on Friday 2 April. Trayodaśī runs from 09:53 on Fri 2 Apr to 08:50 on Sat 3 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-04-02", "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/2004/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9588, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-04-03T08:50:17-06:00", "utc": "2004-04-03T14:50:17Z", "ms": 1081003816513.3658 }, "end": { "local": "2004-04-04T08:11:14-05:00", "utc": "2004-04-04T13:11:14Z", "ms": 1081084273990.966 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-04-03T08:50:17-06:00", "utc": "2004-04-03T14:50:17Z", "ms": 1081003816513.3658 }, "end": { "local": "2004-04-04T08:11:14-05:00", "utc": "2004-04-04T13:11:14Z", "ms": 1081084273990.966 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-04-03", "window": { "start": { "local": "2004-04-03T11:30:05-06:00", "utc": "2004-04-03T17:30:05Z", "ms": 1081013404928.9673 }, "end": { "local": "2004-04-03T12:18:05-06:00", "utc": "2004-04-03T18:18:05Z", "ms": 1081016284928.9673 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-04-04", "window": { "start": { "local": "2004-04-04T12:29:47-05:00", "utc": "2004-04-04T17:29:47Z", "ms": 1081099787486.822 }, "end": { "local": "2004-04-04T13:17:47-05:00", "utc": "2004-04-04T18:17:47Z", "ms": 1081102667486.822 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:50 on Sat 3 Apr to 08:11 on Sun 4 Apr.", "fact": "2004-04-03T14:50:17Z → 2004-04-04T13:11:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:30–12:18 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": "Caturdaśī 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 9588 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Chicago, 2004: Saturday 3 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": "2004-04-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-03", "confidence": "determinate" } ], "quote": "In Chicago, Viṣṇudamanaka Caturdaśī 2004 falls on Saturday 3 April. Caturdaśī runs from 08:50 on Sat 3 Apr to 08:11 on Sun 4 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15513, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-04-04T08:11:14-05:00", "utc": "2004-04-04T13:11:14Z", "ms": 1081084273990.966 }, "end": { "local": "2004-04-05T06:02:45-05:00", "utc": "2004-04-05T11:02:45Z", "ms": 1081162965196.5399 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2004-04-04T08:11:14-05:00", "utc": "2004-04-04T13:11:14Z", "ms": 1081084273990.966 }, "end": { "local": "2004-04-05T06:02:45-05:00", "utc": "2004-04-05T11:02:45Z", "ms": 1081162965196.5399 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-04-04", "window": { "start": { "local": "2004-04-04T12:29:47-05:00", "utc": "2004-04-04T17:29:47Z", "ms": 1081099787486.822 }, "end": { "local": "2004-04-04T13:17:47-05:00", "utc": "2004-04-04T18:17:47Z", "ms": 1081102667486.822 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-04-05", "window": { "start": { "local": "2004-04-05T12:29:30-05:00", "utc": "2004-04-05T17:29:30Z", "ms": 1081186170219.2037 }, "end": { "local": "2004-04-05T13:17:30-05:00", "utc": "2004-04-05T18:17:30Z", "ms": 1081189050219.2037 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 08:11 on Sun 4 Apr to 06:03 on Mon 5 Apr.", "fact": "2004-04-04T13:11:14Z → 2004-04-05T11:02:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 4th, 12:30–13:18 on the 5th.", "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 4th and 0 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 15513 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Chicago, 2004: Sunday 4 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": "2004-04-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-04", "confidence": "determinate" } ], "quote": "In Chicago, Caitrī Pūrṇimā 2004 falls on Sunday 4 April. Pūrṇimā runs from 08:11 on Sun 4 Apr to 06:03 on Mon 5 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/sankashta-chaturthi?on=2004-04-07", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2025, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-04-07T21:59:02-05:00", "utc": "2004-04-08T02:59:02Z", "ms": 1081393142248.4956 }, "end": { "local": "2004-04-08T19:10:06-05:00", "utc": "2004-04-09T00:10:06Z", "ms": 1081469405681.7521 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-04-07T21:59:02-05:00", "utc": "2004-04-08T02:59:02Z", "ms": 1081393142248.4956 }, "end": { "local": "2004-04-08T19:10:06-05:00", "utc": "2004-04-09T00:10:06Z", "ms": 1081469405681.7521 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-04-07", "window": { "start": { "local": "2004-04-07T22:32:47-05:00", "utc": "2004-04-08T03:32:47Z", "ms": 1081395166863.6959 }, "end": { "local": "2004-04-07T22:32:47-05:00", "utc": "2004-04-08T03:32:47Z", "ms": 1081395166863.6959 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-04-08", "window": { "start": { "local": "2004-04-08T23:52:22-05:00", "utc": "2004-04-09T04:52:22Z", "ms": 1081486342499.3689 }, "end": { "local": "2004-04-08T23:52:22-05:00", "utc": "2004-04-09T04:52:22Z", "ms": 1081486342499.3689 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:59 on Wed 7 Apr to 19:10 on Thu 8 Apr.", "fact": "2004-04-08T02:59:02Z → 2004-04-09T00:10:06Z" }, { "step": "kaala", "text": "Moonrise is at 22:33 on the 7th and 23:52 on the 8th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 7th and is not on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2025 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2004: Wednesday 7 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": "2004-04-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-07", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2004 falls on Wednesday 7 April. Caturthī runs from 21:59 on Wed 7 Apr to 19:10 on Thu 8 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/sankashta-chaturthi?on=2004-04-07", "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/2004/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4750, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "2004-04-13T07:32:19-05:00", "utc": "2004-04-13T12:32:19Z", "ms": 1081859539241.1885 }, "end": { "local": "2004-05-14T04:25:30-05:00", "utc": "2004-05-14T09:25:30Z", "ms": 1084526730015.0026 } }, "span": { "of": "transit", "start": { "local": "2004-04-13T07:32:19-05:00", "utc": "2004-04-13T12:32:19Z", "ms": 1081859539241.1885 }, "end": { "local": "2004-04-13T07:32:19-05:00", "utc": "2004-04-13T12:32:19Z", "ms": 1081859539241.1885 } }, "kaala": "day", "days": [ { "local_date": "2004-04-12", "window": { "start": { "local": "2004-04-12T06:14:46-05:00", "utc": "2004-04-12T11:14:46Z", "ms": 1081768485775.3678 }, "end": { "local": "2004-04-13T06:13:09-05:00", "utc": "2004-04-13T11:13:09Z", "ms": 1081854789438.2972 } }, "covered_min": 0, "window_min": 1438, "qualifies": false }, { "local_date": "2004-04-13", "window": { "start": { "local": "2004-04-13T06:13:09-05:00", "utc": "2004-04-13T11:13:09Z", "ms": 1081854789438.2972 }, "end": { "local": "2004-04-14T06:11:34-05:00", "utc": "2004-04-14T11:11:34Z", "ms": 1081941093758.3855 } }, "covered_min": 1, "window_min": 1438, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 07:32 on Tue 13 Apr.", "fact": "2004-04-13T12:32:19Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:15 on the 12th, and from 06:13 on the 13th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 13th, not the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunrise → only-day · margin 4750 s" }, { "step": "ruling", "text": "Vaiśākhī, Chicago, 2004: Tuesday 13 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "vaishakhi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Mesadi — Cadaka puja (Bengal), Bahag Bihu (Assam), Cheiraoba (Manipur), Visu (T. C. State), Vaisakhi (on the samkramana day commencing from sunrise)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "not_evaluated": "The other names in the row (Cadaka puja, Bahag Bihu, Cheiraoba, Visu) are regional observances and wait with the regional rows.", "rashi": "Meṣa", "day_from": "sunrise" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2004-04-13", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "2004-04-13", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Chicago, Vaiśākhī 2004 falls on Tuesday 13 April. The Sun enters Meṣa at 07:32 on Tue 13 Apr, and the rule counts the day from sunrise.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-04-15", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1355, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-04-14T07:13:57-05:00", "utc": "2004-04-14T12:13:57Z", "ms": 1081944837428.6091 }, "end": { "local": "2004-04-15T06:32:34-05:00", "utc": "2004-04-15T11:32:34Z", "ms": 1082028753893.4353 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-04-14T07:13:57-05:00", "utc": "2004-04-14T12:13:57Z", "ms": 1081944837428.6091 }, "end": { "local": "2004-04-15T06:32:34-05:00", "utc": "2004-04-15T11:32:34Z", "ms": 1082028753893.4353 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-04-14", "window": { "start": { "local": "2004-04-14T06:11:34-05:00", "utc": "2004-04-14T11:11:34Z", "ms": 1081941093758.3855 }, "end": { "local": "2004-04-14T06:11:34-05:00", "utc": "2004-04-14T11:11:34Z", "ms": 1081941093758.3855 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-04-15", "window": { "start": { "local": "2004-04-15T06:09:59-05:00", "utc": "2004-04-15T11:09:59Z", "ms": 1082027398766.5912 }, "end": { "local": "2004-04-15T06:09:59-05:00", "utc": "2004-04-15T11:09:59Z", "ms": 1082027398766.5912 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:14 on Wed 14 Apr to 06:33 on Thu 15 Apr.", "fact": "2004-04-14T12:13:57Z → 2004-04-15T11:32:34Z" }, { "step": "kaala", "text": "Sunrise is at 06:12 on the 14th and 06:10 on the 15th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 14th and is on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1355 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Chicago, 2004: Thursday 15 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": "2004-04-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-15", "confidence": "determinate" } ], "quote": "In Chicago, Varūthinī Ekādaśī 2004 falls on Thursday 15 April. Ekādaśī runs from 07:14 on Wed 14 Apr to 06:33 on Thu 15 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-04-15", "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/2004/pradosha-vrata?on=2004-04-16", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33675, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-04-16T06:17:53-05:00", "utc": "2004-04-16T11:17:53Z", "ms": 1082114272738.1708 }, "end": { "local": "2004-04-17T06:30:49-05:00", "utc": "2004-04-17T11:30:49Z", "ms": 1082201448563.443 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-04-16T06:17:53-05:00", "utc": "2004-04-16T11:17:53Z", "ms": 1082114272738.1708 }, "end": { "local": "2004-04-17T06:30:49-05:00", "utc": "2004-04-17T11:30:49Z", "ms": 1082201448563.443 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-04-15", "window": { "start": { "local": "2004-04-15T19:31:45-05:00", "utc": "2004-04-16T00:31:45Z", "ms": 1082075504697.7451 }, "end": { "local": "2004-04-15T20:56:38-05:00", "utc": "2004-04-16T01:56:38Z", "ms": 1082080598003.8389 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "2004-04-16", "window": { "start": { "local": "2004-04-16T19:32:51-05:00", "utc": "2004-04-17T00:32:51Z", "ms": 1082161970879.4929 }, "end": { "local": "2004-04-16T20:57:23-05:00", "utc": "2004-04-17T01:57:23Z", "ms": 1082167042891.4496 } }, "covered_min": 85, "window_min": 85, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:18 on Fri 16 Apr to 06:31 on Sat 17 Apr.", "fact": "2004-04-16T11:17:53Z → 2004-04-17T11:30:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:32–20:57 on the 15th, 19:33–20:57 on the 16th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 85 minutes on the 15th and 85 of 85 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 33675 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2004: Friday 16 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": "2004-04-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-16", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2004 falls on Friday 16 April. Trayodaśī runs from 06:18 on Fri 16 Apr to 06:31 on Sat 17 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-04-16", "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/2004/shivaratri?on=2004-04-17", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19018, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-04-17T06:30:49-05:00", "utc": "2004-04-17T11:30:49Z", "ms": 1082201448563.443 }, "end": { "local": "2004-04-18T07:11:56-05:00", "utc": "2004-04-18T12:11:56Z", "ms": 1082290315922.4846 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-04-17T06:30:49-05:00", "utc": "2004-04-17T11:30:49Z", "ms": 1082201448563.443 }, "end": { "local": "2004-04-18T07:11:56-05:00", "utc": "2004-04-18T12:11:56Z", "ms": 1082290315922.4846 } }, "kaala": "nishita", "days": [ { "local_date": "2004-04-16", "window": { "start": { "local": "2004-04-17T00:25:51-05:00", "utc": "2004-04-17T05:25:51Z", "ms": 1082179550924.3304 }, "end": { "local": "2004-04-17T01:13:51-05:00", "utc": "2004-04-17T06:13:51Z", "ms": 1082182430924.3304 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-04-17", "window": { "start": { "local": "2004-04-18T00:25:38-05:00", "utc": "2004-04-18T05:25:38Z", "ms": 1082265937651.1868 }, "end": { "local": "2004-04-18T01:13:38-05:00", "utc": "2004-04-18T06:13:38Z", "ms": 1082268817651.1868 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 06:31 on Sat 17 Apr to 07:12 on Sun 18 Apr.", "fact": "2004-04-17T11:30:49Z → 2004-04-18T12:11:56Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:26–01:14 on the 16th, 00:26–01:14 on the 17th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19018 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2004: Saturday 17 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": "2004-04-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-17", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2004 falls on Saturday 17 April. Caturdaśī runs from 06:31 on Sat 17 Apr to 07:12 on Sun 18 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/shivaratri?on=2004-04-17", "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/2004/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19313, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2004-04-21T11:57:57-05:00", "utc": "2004-04-21T16:57:57Z", "ms": 1082566676863.9208 }, "end": { "local": "2004-04-22T14:17:35-05:00", "utc": "2004-04-22T19:17:35Z", "ms": 1082661455173.0875 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-04-21T11:57:57-05:00", "utc": "2004-04-21T16:57:57Z", "ms": 1082566676863.9208 }, "end": { "local": "2004-04-22T14:17:35-05:00", "utc": "2004-04-22T19:17:35Z", "ms": 1082661455173.0875 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-04-21", "window": { "start": { "local": "2004-04-21T19:38:22-05:00", "utc": "2004-04-22T00:38:22Z", "ms": 1082594301868.7039 }, "end": { "local": "2004-04-21T21:01:09-05:00", "utc": "2004-04-22T02:01:09Z", "ms": 1082599269037.2596 } }, "covered_min": 83, "window_min": 83, "qualifies": true }, { "local_date": "2004-04-22", "window": { "start": { "local": "2004-04-22T19:39:28-05:00", "utc": "2004-04-23T00:39:28Z", "ms": 1082680768010.9995 }, "end": { "local": "2004-04-22T21:01:55-05:00", "utc": "2004-04-23T02:01:55Z", "ms": 1082685714574.231 } }, "covered_min": 0, "window_min": 82, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 11:58 on Wed 21 Apr to 14:18 on Thu 22 Apr.", "fact": "2004-04-21T16:57:57Z → 2004-04-22T19:17:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:38–21:01 on the 21st, 19:39–21:02 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 83 of 83 minutes on the 21st and 0 of 82 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19313 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Chicago, 2004: Wednesday 21 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-04-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-21", "confidence": "determinate" } ], "quote": "In Chicago, Paraśurāma Jayantī 2004 falls on Wednesday 21 April. Tṛtīyā runs from 11:58 on Wed 21 Apr to 14:18 on Thu 22 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5080, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2004-04-21T11:57:57-05:00", "utc": "2004-04-21T16:57:57Z", "ms": 1082566676863.9208 }, "end": { "local": "2004-04-22T14:17:35-05:00", "utc": "2004-04-22T19:17:35Z", "ms": 1082661455173.0875 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-04-21T11:57:57-05:00", "utc": "2004-04-21T16:57:57Z", "ms": 1082566676863.9208 }, "end": { "local": "2004-04-22T14:17:35-05:00", "utc": "2004-04-22T19:17:35Z", "ms": 1082661455173.0875 } }, "kaala": "purvahna", "days": [ { "local_date": "2004-04-21", "window": { "start": { "local": "2004-04-21T06:00:45-05:00", "utc": "2004-04-21T11:00:45Z", "ms": 1082545244961.3285 }, "end": { "local": "2004-04-21T10:33:17-05:00", "utc": "2004-04-21T15:33:17Z", "ms": 1082561597263.787 } }, "covered_min": 0, "window_min": 273, "qualifies": false }, { "local_date": "2004-04-22", "window": { "start": { "local": "2004-04-22T05:59:16-05:00", "utc": "2004-04-22T10:59:16Z", "ms": 1082631555632.872 }, "end": { "local": "2004-04-22T10:32:40-05:00", "utc": "2004-04-22T15:32:40Z", "ms": 1082647959758.9144 } }, "covered_min": 273, "window_min": 273, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 11:58 on Wed 21 Apr to 14:18 on Thu 22 Apr.", "fact": "2004-04-21T16:57:57Z → 2004-04-22T19:17:35Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:01–10:33 on the 21st, 05:59–10:33 on the 22nd.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pūrvāhṇa. It covers 0 of 273 minutes on the 21st and 273 of 273 on the 22nd.", "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 5080 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Chicago, 2004: Thursday 22 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "not_evaluated": "The row calls the day special with Rohiṇī nakṣatra and a Wednesday; neither is tested.", "kaala": "purvahna", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-04-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-22", "confidence": "determinate" } ], "quote": "In Chicago, Akṣaya Tṛtīyā 2004 falls on Thursday 22 April. Tṛtīyā runs from 11:58 on Wed 21 Apr to 14:18 on Thu 22 Apr and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/vinayaka-chaturthi?on=2004-04-23", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3853, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-04-22T14:17:35-05:00", "utc": "2004-04-22T19:17:35Z", "ms": 1082661455173.0875 }, "end": { "local": "2004-04-23T16:48:47-05:00", "utc": "2004-04-23T21:48:47Z", "ms": 1082756927441.8989 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-04-22T14:17:35-05:00", "utc": "2004-04-22T19:17:35Z", "ms": 1082661455173.0875 }, "end": { "local": "2004-04-23T16:48:47-05:00", "utc": "2004-04-23T21:48:47Z", "ms": 1082756927441.8989 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-04-22", "window": { "start": { "local": "2004-04-22T12:25:22-05:00", "utc": "2004-04-22T17:25:22Z", "ms": 1082654721821.9358 }, "end": { "local": "2004-04-22T13:13:22-05:00", "utc": "2004-04-22T18:13:22Z", "ms": 1082657601821.9358 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-04-23", "window": { "start": { "local": "2004-04-23T12:25:11-05:00", "utc": "2004-04-23T17:25:11Z", "ms": 1082741110670.9998 }, "end": { "local": "2004-04-23T13:13:11-05:00", "utc": "2004-04-23T18:13:11Z", "ms": 1082743990670.9998 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:18 on Thu 22 Apr to 16:49 on Fri 23 Apr.", "fact": "2004-04-22T19:17:35Z → 2004-04-23T21:48:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 22nd, 12:25–13:13 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 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 midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3853 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2004: Friday 23 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": "2004-04-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-23", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2004 falls on Friday 23 April. Caturthī runs from 14:18 on Thu 22 Apr to 16:49 on Fri 23 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/vinayaka-chaturthi?on=2004-04-23", "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/2004/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12937, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2004-04-23T16:48:47-05:00", "utc": "2004-04-23T21:48:47Z", "ms": 1082756927441.8989 }, "end": { "local": "2004-04-24T19:21:31-05:00", "utc": "2004-04-25T00:21:31Z", "ms": 1082852491371.0292 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-04-23T16:48:47-05:00", "utc": "2004-04-23T21:48:47Z", "ms": 1082756927441.8989 }, "end": { "local": "2004-04-24T19:21:31-05:00", "utc": "2004-04-25T00:21:31Z", "ms": 1082852491371.0292 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-04-23", "window": { "start": { "local": "2004-04-23T12:25:11-05:00", "utc": "2004-04-23T17:25:11Z", "ms": 1082741110670.9998 }, "end": { "local": "2004-04-23T13:13:11-05:00", "utc": "2004-04-23T18:13:11Z", "ms": 1082743990670.9998 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-04-24", "window": { "start": { "local": "2004-04-24T12:25:00-05:00", "utc": "2004-04-24T17:25:00Z", "ms": 1082827499971.3395 }, "end": { "local": "2004-04-24T13:13:00-05:00", "utc": "2004-04-24T18:13:00Z", "ms": 1082830379971.3395 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 16:49 on Fri 23 Apr to 19:22 on Sat 24 Apr.", "fact": "2004-04-23T21:48:47Z → 2004-04-25T00:21:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 23rd, 12:25–13:13 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12937 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Chicago, 2004: Saturday 24 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shankara-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sankara jayanti." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-04-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-24", "confidence": "determinate" } ], "quote": "In Chicago, Śaṅkara Jayantī 2004 falls on Saturday 24 April. Pañcamī runs from 16:49 on Fri 23 Apr to 19:22 on Sat 24 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30673, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2004-04-25T21:44:03-05:00", "utc": "2004-04-26T02:44:03Z", "ms": 1082947442667.5844 }, "end": { "local": "2004-04-26T23:44:14-05:00", "utc": "2004-04-27T04:44:14Z", "ms": 1083041054212.7664 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-04-25T21:44:03-05:00", "utc": "2004-04-26T02:44:03Z", "ms": 1082947442667.5844 }, "end": { "local": "2004-04-26T23:44:14-05:00", "utc": "2004-04-27T04:44:14Z", "ms": 1083041054212.7664 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-04-25", "window": { "start": { "local": "2004-04-25T12:24:50-05:00", "utc": "2004-04-25T17:24:50Z", "ms": 1082913889730.9131 }, "end": { "local": "2004-04-25T13:12:50-05:00", "utc": "2004-04-25T18:12:50Z", "ms": 1082916769730.9131 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-04-26", "window": { "start": { "local": "2004-04-26T12:24:40-05:00", "utc": "2004-04-26T17:24:40Z", "ms": 1083000279959.024 }, "end": { "local": "2004-04-26T13:12:40-05:00", "utc": "2004-04-26T18:12:40Z", "ms": 1083003159959.024 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 21:44 on Sun 25 Apr to 23:44 on Mon 26 Apr.", "fact": "2004-04-26T02:44:03Z → 2004-04-27T04:44:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:25–13:13 on the 25th, 12:25–13:13 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 25th and 48 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 30673 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Chicago, 2004: Monday 26 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gangotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-26", "confidence": "determinate" } ], "quote": "In Chicago, Gaṅgotpatti (Ganga Saptami) 2004 falls on Monday 26 April. Saptamī runs from 21:44 on Sun 25 Apr to 23:44 on Mon 26 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-04-30", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-04-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13909, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-04-30T01:56:08-05:00", "utc": "2004-04-30T06:56:08Z", "ms": 1083308168347.1486 }, "end": { "local": "2004-05-01T01:08:32-05:00", "utc": "2004-05-01T06:08:32Z", "ms": 1083391712175.7961 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-04-30T01:56:08-05:00", "utc": "2004-04-30T06:56:08Z", "ms": 1083308168347.1486 }, "end": { "local": "2004-05-01T01:08:32-05:00", "utc": "2004-05-01T06:08:32Z", "ms": 1083391712175.7961 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-04-30", "window": { "start": { "local": "2004-04-30T05:47:57-05:00", "utc": "2004-04-30T10:47:57Z", "ms": 1083322077185.3107 }, "end": { "local": "2004-04-30T05:47:57-05:00", "utc": "2004-04-30T10:47:57Z", "ms": 1083322077185.3107 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-05-01", "window": { "start": { "local": "2004-05-01T05:46:37-05:00", "utc": "2004-05-01T10:46:37Z", "ms": 1083408397388.6315 }, "end": { "local": "2004-05-01T05:46:37-05:00", "utc": "2004-05-01T10:46:37Z", "ms": 1083408397388.6315 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:56 on Fri 30 Apr to 01:09 on Sat 1 May.", "fact": "2004-04-30T06:56:08Z → 2004-05-01T06:08:32Z" }, { "step": "kaala", "text": "Sunrise is at 05:48 on the 30th and 05:47 on the 1st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 30th and is not on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 13909 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Chicago, 2004: Friday 30 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": "2004-04-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-04-30", "confidence": "determinate" } ], "quote": "In Chicago, Mohinī Ekādaśī 2004 falls on Friday 30 April. Ekādaśī runs from 01:56 on Fri 30 Apr to 01:09 on Sat 1 May and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-04-30", "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/2004/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37466, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2004-05-01T01:08:32-05:00", "utc": "2004-05-01T06:08:32Z", "ms": 1083391712175.7961 }, "end": { "local": "2004-05-01T23:36:24-05:00", "utc": "2004-05-02T04:36:24Z", "ms": 1083472584322.5112 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-01T01:08:32-05:00", "utc": "2004-05-01T06:08:32Z", "ms": 1083391712175.7961 }, "end": { "local": "2004-05-01T23:36:24-05:00", "utc": "2004-05-02T04:36:24Z", "ms": 1083472584322.5112 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-04-30", "window": { "start": { "local": "2004-04-30T12:24:06-05:00", "utc": "2004-04-30T17:24:06Z", "ms": 1083345845722.1826 }, "end": { "local": "2004-04-30T13:12:06-05:00", "utc": "2004-04-30T18:12:06Z", "ms": 1083348725722.1826 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-05-01", "window": { "start": { "local": "2004-05-01T12:23:58-05:00", "utc": "2004-05-01T17:23:58Z", "ms": 1083432238417.9889 }, "end": { "local": "2004-05-01T13:11:58-05:00", "utc": "2004-05-01T18:11:58Z", "ms": 1083435118417.9889 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 01:09 on Sat 1 May to 23:36 on Sat 1 May.", "fact": "2004-05-01T06:08:32Z → 2004-05-02T04:36:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 30th, 12:24–13:12 on the 1st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 37466 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Chicago, 2004: Saturday 1 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": "2004-05-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-01", "confidence": "determinate" } ], "quote": "In Chicago, Paraśurāma Dvādaśī 2004 falls on Saturday 1 May. Dvādaśī runs from 01:09 on Sat 1 May to 23:36 on Sat 1 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37466, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2004-05-01T01:08:32-05:00", "utc": "2004-05-01T06:08:32Z", "ms": 1083391712175.7961 }, "end": { "local": "2004-05-01T23:36:24-05:00", "utc": "2004-05-02T04:36:24Z", "ms": 1083472584322.5112 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-01T01:08:32-05:00", "utc": "2004-05-01T06:08:32Z", "ms": 1083391712175.7961 }, "end": { "local": "2004-05-01T23:36:24-05:00", "utc": "2004-05-02T04:36:24Z", "ms": 1083472584322.5112 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-04-30", "window": { "start": { "local": "2004-04-30T12:24:06-05:00", "utc": "2004-04-30T17:24:06Z", "ms": 1083345845722.1826 }, "end": { "local": "2004-04-30T13:12:06-05:00", "utc": "2004-04-30T18:12:06Z", "ms": 1083348725722.1826 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-05-01", "window": { "start": { "local": "2004-05-01T12:23:58-05:00", "utc": "2004-05-01T17:23:58Z", "ms": 1083432238417.9889 }, "end": { "local": "2004-05-01T13:11:58-05:00", "utc": "2004-05-01T18:11:58Z", "ms": 1083435118417.9889 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 01:09 on Sat 1 May to 23:36 on Sat 1 May.", "fact": "2004-05-01T06:08:32Z → 2004-05-02T04:36:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 30th, 12:24–13:12 on the 1st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 37466 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Chicago, 2004: Saturday 1 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": "2004-05-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-01", "confidence": "determinate" } ], "quote": "In Chicago, Rukmiṇī Dvādaśī 2004 falls on Saturday 1 May. Dvādaśī runs from 01:09 on Sat 1 May to 23:36 on Sat 1 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-02", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 922, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-05-02T21:24:55-05:00", "utc": "2004-05-03T02:24:55Z", "ms": 1083551095200.2753 }, "end": { "local": "2004-05-03T18:41:10-05:00", "utc": "2004-05-03T23:41:10Z", "ms": 1083627669950.0184 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-02T21:24:55-05:00", "utc": "2004-05-03T02:24:55Z", "ms": 1083551095200.2753 }, "end": { "local": "2004-05-03T18:41:10-05:00", "utc": "2004-05-03T23:41:10Z", "ms": 1083627669950.0184 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-05-02", "window": { "start": { "local": "2004-05-02T19:50:24-05:00", "utc": "2004-05-03T00:50:24Z", "ms": 1083545424451.1581 }, "end": { "local": "2004-05-02T21:09:33-05:00", "utc": "2004-05-03T02:09:33Z", "ms": 1083550173391.2539 } }, "covered_min": 0, "window_min": 79, "qualifies": false }, { "local_date": "2004-05-03", "window": { "start": { "local": "2004-05-03T19:51:29-05:00", "utc": "2004-05-04T00:51:29Z", "ms": 1083631889255.5514 }, "end": { "local": "2004-05-03T21:10:19-05:00", "utc": "2004-05-04T02:10:19Z", "ms": 1083636619418.8105 } }, "covered_min": 0, "window_min": 79, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:25 on Sun 2 May to 18:41 on Mon 3 May.", "fact": "2004-05-03T02:24:55Z → 2004-05-03T23:41:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:50–21:10 on the 2nd, 19:51–21:10 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 0 of 79 minutes on the 2nd and 0 of 79 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither evening qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 922 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Chicago, 2004: Sunday 2 May.", "fact": "confidence: boundary (absent-unstated)" } ], "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": "2004-05-02", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-02", "confidence": "determinate" } ], "quote": "In Chicago, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 2004 falls on Sunday 2 May. Caturdaśī runs from 21:25 on Sun 2 May to 18:41 on Mon 3 May, and reaches pradoṣa on neither day.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/pradosha-vrata?on=2004-05-02", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 922, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-05-01T23:36:24-05:00", "utc": "2004-05-02T04:36:24Z", "ms": 1083472584322.5112 }, "end": { "local": "2004-05-02T21:24:55-05:00", "utc": "2004-05-03T02:24:55Z", "ms": 1083551095200.2753 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-01T23:36:24-05:00", "utc": "2004-05-02T04:36:24Z", "ms": 1083472584322.5112 }, "end": { "local": "2004-05-02T21:24:55-05:00", "utc": "2004-05-03T02:24:55Z", "ms": 1083551095200.2753 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-05-01", "window": { "start": { "local": "2004-05-01T19:49:19-05:00", "utc": "2004-05-02T00:49:19Z", "ms": 1083458959447.3463 }, "end": { "local": "2004-05-01T21:08:47-05:00", "utc": "2004-05-02T02:08:47Z", "ms": 1083463727363.184 } }, "covered_min": 0, "window_min": 79, "qualifies": false }, { "local_date": "2004-05-02", "window": { "start": { "local": "2004-05-02T19:50:24-05:00", "utc": "2004-05-03T00:50:24Z", "ms": 1083545424451.1581 }, "end": { "local": "2004-05-02T21:09:33-05:00", "utc": "2004-05-03T02:09:33Z", "ms": 1083550173391.2539 } }, "covered_min": 79, "window_min": 79, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:36 on Sat 1 May to 21:25 on Sun 2 May.", "fact": "2004-05-02T04:36:24Z → 2004-05-03T02:24:55Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:49–21:09 on the 1st, 19:50–21:10 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 79 minutes on the 1st and 79 of 79 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 922 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2004: Sunday 2 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": "2004-05-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-02", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2004 falls on Sunday 2 May. Trayodaśī runs from 23:36 on Sat 1 May to 21:25 on Sun 2 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-05-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8507, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-05-03T18:41:10-05:00", "utc": "2004-05-03T23:41:10Z", "ms": 1083627669950.0184 }, "end": { "local": "2004-05-04T15:33:27-05:00", "utc": "2004-05-04T20:33:27Z", "ms": 1083702806612.8502 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-03T18:41:10-05:00", "utc": "2004-05-03T23:41:10Z", "ms": 1083627669950.0184 }, "end": { "local": "2004-05-04T15:33:27-05:00", "utc": "2004-05-04T20:33:27Z", "ms": 1083702806612.8502 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-05-03", "window": { "start": { "local": "2004-05-03T12:23:45-05:00", "utc": "2004-05-03T17:23:45Z", "ms": 1083605025378.7141 }, "end": { "local": "2004-05-03T13:11:45-05:00", "utc": "2004-05-03T18:11:45Z", "ms": 1083607905378.7141 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-05-04", "window": { "start": { "local": "2004-05-04T12:23:40-05:00", "utc": "2004-05-04T17:23:40Z", "ms": 1083691419662.8896 }, "end": { "local": "2004-05-04T13:11:40-05:00", "utc": "2004-05-04T18:11:40Z", "ms": 1083694299662.8896 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:41 on Mon 3 May to 15:33 on Tue 4 May.", "fact": "2004-05-03T23:41:10Z → 2004-05-04T20:33:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 3rd, 12:24–13:12 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 3rd and 48 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8507 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Chicago, 2004: Tuesday 4 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": "2004-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-04", "confidence": "determinate" } ], "quote": "In Chicago, Buddha Pūrṇimā 2004 falls on Tuesday 4 May. Pūrṇimā runs from 18:41 on Mon 3 May to 15:33 on Tue 4 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8507, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-05-03T18:41:10-05:00", "utc": "2004-05-03T23:41:10Z", "ms": 1083627669950.0184 }, "end": { "local": "2004-05-04T15:33:27-05:00", "utc": "2004-05-04T20:33:27Z", "ms": 1083702806612.8502 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-03T18:41:10-05:00", "utc": "2004-05-03T23:41:10Z", "ms": 1083627669950.0184 }, "end": { "local": "2004-05-04T15:33:27-05:00", "utc": "2004-05-04T20:33:27Z", "ms": 1083702806612.8502 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-05-03", "window": { "start": { "local": "2004-05-03T12:23:45-05:00", "utc": "2004-05-03T17:23:45Z", "ms": 1083605025378.7141 }, "end": { "local": "2004-05-03T13:11:45-05:00", "utc": "2004-05-03T18:11:45Z", "ms": 1083607905378.7141 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-05-04", "window": { "start": { "local": "2004-05-04T12:23:40-05:00", "utc": "2004-05-04T17:23:40Z", "ms": 1083691419662.8896 }, "end": { "local": "2004-05-04T13:11:40-05:00", "utc": "2004-05-04T18:11:40Z", "ms": 1083694299662.8896 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:41 on Mon 3 May to 15:33 on Tue 4 May.", "fact": "2004-05-03T23:41:10Z → 2004-05-04T20:33:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 3rd, 12:24–13:12 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 3rd and 48 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8507 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Chicago, 2004: Tuesday 4 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": "2004-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-04", "confidence": "determinate" } ], "quote": "In Chicago, Sampat Gaurī Vrata 2004 falls on Tuesday 4 May. Pūrṇimā runs from 18:41 on Mon 3 May to 15:33 on Tue 4 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/sankashta-chaturthi?on=2004-05-07", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7302, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-05-07T05:16:51-05:00", "utc": "2004-05-07T10:16:51Z", "ms": 1083925010712.7275 }, "end": { "local": "2004-05-08T02:03:27-05:00", "utc": "2004-05-08T07:03:27Z", "ms": 1083999806521.3322 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-07T05:16:51-05:00", "utc": "2004-05-07T10:16:51Z", "ms": 1083925010712.7275 }, "end": { "local": "2004-05-08T02:03:27-05:00", "utc": "2004-05-08T07:03:27Z", "ms": 1083999806521.3322 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-05-06", "window": { "start": { "local": "2004-05-06T22:49:07-05:00", "utc": "2004-05-07T03:49:07Z", "ms": 1083901746750.4023 }, "end": { "local": "2004-05-06T22:49:07-05:00", "utc": "2004-05-07T03:49:07Z", "ms": 1083901746750.4023 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-05-07", "window": { "start": { "local": "2004-05-08T00:01:45-05:00", "utc": "2004-05-08T05:01:45Z", "ms": 1083992504600.3435 }, "end": { "local": "2004-05-08T00:01:45-05:00", "utc": "2004-05-08T05:01:45Z", "ms": 1083992504600.3435 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:17 on Fri 7 May to 02:03 on Sat 8 May.", "fact": "2004-05-07T10:16:51Z → 2004-05-08T07:03:27Z" }, { "step": "kaala", "text": "Moonrise is at 22:49 on the 6th and 00:02 on the 7th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 6th and is on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7302 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2004: Friday 7 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-07", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2004 falls on Friday 7 May. Caturthī runs from 05:17 on Fri 7 May to 02:03 on Sat 8 May and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/sankashta-chaturthi?on=2004-05-07", "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/2004/ekadashi?on=2004-05-14", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40270, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-05-13T16:43:35-05:00", "utc": "2004-05-13T21:43:35Z", "ms": 1084484614733.133 }, "end": { "local": "2004-05-14T17:14:37-05:00", "utc": "2004-05-14T22:14:37Z", "ms": 1084572876590.7256 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-13T16:43:35-05:00", "utc": "2004-05-13T21:43:35Z", "ms": 1084484614733.133 }, "end": { "local": "2004-05-14T17:14:37-05:00", "utc": "2004-05-14T22:14:37Z", "ms": 1084572876590.7256 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-05-13", "window": { "start": { "local": "2004-05-13T05:32:25-05:00", "utc": "2004-05-13T10:32:25Z", "ms": 1084444345114.3964 }, "end": { "local": "2004-05-13T05:32:25-05:00", "utc": "2004-05-13T10:32:25Z", "ms": 1084444345114.3964 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-05-14", "window": { "start": { "local": "2004-05-14T05:31:24-05:00", "utc": "2004-05-14T10:31:24Z", "ms": 1084530683891.5999 }, "end": { "local": "2004-05-14T05:31:24-05:00", "utc": "2004-05-14T10:31:24Z", "ms": 1084530683891.5999 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:44 on Thu 13 May to 17:15 on Fri 14 May.", "fact": "2004-05-13T21:43:35Z → 2004-05-14T22:14:37Z" }, { "step": "kaala", "text": "Sunrise is at 05:32 on the 13th and 05:31 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 40270 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Chicago, 2004: Friday 14 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": "2004-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-14", "confidence": "determinate" } ], "quote": "In Chicago, Aparā Ekādaśī 2004 falls on Friday 14 May. Ekādaśī runs from 16:44 on Thu 13 May to 17:15 on Fri 14 May and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-05-14", "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/2004/pradosha-vrata?on=2004-05-15", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1034, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-05-15T18:17:27-05:00", "utc": "2004-05-15T23:17:27Z", "ms": 1084663047420.4402 }, "end": { "local": "2004-05-16T19:47:50-05:00", "utc": "2004-05-17T00:47:50Z", "ms": 1084754869863.705 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-15T18:17:27-05:00", "utc": "2004-05-15T23:17:27Z", "ms": 1084663047420.4402 }, "end": { "local": "2004-05-16T19:47:50-05:00", "utc": "2004-05-17T00:47:50Z", "ms": 1084754869863.705 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-05-15", "window": { "start": { "local": "2004-05-15T20:04:04-05:00", "utc": "2004-05-16T01:04:04Z", "ms": 1084669444139.4055 }, "end": { "local": "2004-05-15T21:19:27-05:00", "utc": "2004-05-16T02:19:27Z", "ms": 1084673967112.4655 } }, "covered_min": 75, "window_min": 75, "qualifies": true }, { "local_date": "2004-05-16", "window": { "start": { "local": "2004-05-16T20:05:04-05:00", "utc": "2004-05-17T01:05:04Z", "ms": 1084755904278.058 }, "end": { "local": "2004-05-16T21:20:12-05:00", "utc": "2004-05-17T02:20:12Z", "ms": 1084760411742.3246 } }, "covered_min": 0, "window_min": 75, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:17 on Sat 15 May to 19:48 on Sun 16 May.", "fact": "2004-05-15T23:17:27Z → 2004-05-17T00:47:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:04–21:19 on the 15th, 20:05–21:20 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 75 of 75 minutes on the 15th and 0 of 75 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 1034 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2004: Saturday 15 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": "2004-05-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-15", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2004 falls on Saturday 15 May. Trayodaśī runs from 18:17 on Sat 15 May to 19:48 on Sun 16 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-05-15", "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/2004/shivaratri?on=2004-05-16", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9711, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-05-16T19:47:50-05:00", "utc": "2004-05-17T00:47:50Z", "ms": 1084754869863.705 }, "end": { "local": "2004-05-17T21:40:59-05:00", "utc": "2004-05-18T02:40:59Z", "ms": 1084848059143.1625 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-16T19:47:50-05:00", "utc": "2004-05-17T00:47:50Z", "ms": 1084754869863.705 }, "end": { "local": "2004-05-17T21:40:59-05:00", "utc": "2004-05-18T02:40:59Z", "ms": 1084848059143.1625 } }, "kaala": "nishita", "days": [ { "local_date": "2004-05-16", "window": { "start": { "local": "2004-05-17T00:22:47-05:00", "utc": "2004-05-17T05:22:47Z", "ms": 1084771367269.0579 }, "end": { "local": "2004-05-17T01:10:47-05:00", "utc": "2004-05-17T06:10:47Z", "ms": 1084774247269.0579 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-05-17", "window": { "start": { "local": "2004-05-18T00:22:50-05:00", "utc": "2004-05-18T05:22:50Z", "ms": 1084857769818.3215 }, "end": { "local": "2004-05-18T01:10:50-05:00", "utc": "2004-05-18T06:10:50Z", "ms": 1084860649818.3215 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 19:48 on Sun 16 May to 21:41 on Mon 17 May.", "fact": "2004-05-17T00:47:50Z → 2004-05-18T02:40:59Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:23–01:11 on the 16th, 00:23–01:11 on the 17th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9711 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2004: Sunday 16 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": "2004-05-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-16", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2004 falls on Sunday 16 May. Caturdaśī runs from 19:48 on Sun 16 May to 21:41 on Mon 17 May and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/shivaratri?on=2004-05-16", "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/2004/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18440, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2004-05-21T04:45:44-05:00", "utc": "2004-05-21T09:45:44Z", "ms": 1085132744258.7557 }, "end": { "local": "2004-05-22T07:16:13-05:00", "utc": "2004-05-22T12:16:13Z", "ms": 1085228173198.6891 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-21T04:45:44-05:00", "utc": "2004-05-21T09:45:44Z", "ms": 1085132744258.7557 }, "end": { "local": "2004-05-22T07:16:13-05:00", "utc": "2004-05-22T12:16:13Z", "ms": 1085228173198.6891 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-05-21", "window": { "start": { "local": "2004-05-21T12:23:29-05:00", "utc": "2004-05-21T17:23:29Z", "ms": 1085160209143.2651 }, "end": { "local": "2004-05-21T13:11:29-05:00", "utc": "2004-05-21T18:11:29Z", "ms": 1085163089143.2651 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-05-22", "window": { "start": { "local": "2004-05-22T12:23:33-05:00", "utc": "2004-05-22T17:23:33Z", "ms": 1085246613460.3196 }, "end": { "local": "2004-05-22T13:11:33-05:00", "utc": "2004-05-22T18:11:33Z", "ms": 1085249493460.3196 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 04:46 on Fri 21 May to 07:16 on Sat 22 May.", "fact": "2004-05-21T09:45:44Z → 2004-05-22T12:16:13Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 21st, 12:24–13:12 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18440 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Chicago, 2004: Friday 21 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rambha-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Rambha trtiya (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-05-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-21", "confidence": "determinate" } ], "quote": "In Chicago, Rambhā Tṛtīyā 2004 falls on Friday 21 May. Tṛtīyā runs from 04:46 on Fri 21 May to 07:16 on Sat 22 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/vinayaka-chaturthi?on=2004-05-22", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9862, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-05-22T07:16:13-05:00", "utc": "2004-05-22T12:16:13Z", "ms": 1085228173198.6891 }, "end": { "local": "2004-05-23T09:39:16-05:00", "utc": "2004-05-23T14:39:16Z", "ms": 1085323156048.0769 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-22T07:16:13-05:00", "utc": "2004-05-22T12:16:13Z", "ms": 1085228173198.6891 }, "end": { "local": "2004-05-23T09:39:16-05:00", "utc": "2004-05-23T14:39:16Z", "ms": 1085323156048.0769 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-05-22", "window": { "start": { "local": "2004-05-22T12:23:33-05:00", "utc": "2004-05-22T17:23:33Z", "ms": 1085246613460.3196 }, "end": { "local": "2004-05-22T13:11:33-05:00", "utc": "2004-05-22T18:11:33Z", "ms": 1085249493460.3196 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-05-23", "window": { "start": { "local": "2004-05-23T12:23:38-05:00", "utc": "2004-05-23T17:23:38Z", "ms": 1085333018270.4927 }, "end": { "local": "2004-05-23T13:11:38-05:00", "utc": "2004-05-23T18:11:38Z", "ms": 1085335898270.4927 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:16 on Sat 22 May to 09:39 on Sun 23 May.", "fact": "2004-05-22T12:16:13Z → 2004-05-23T14:39:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 22nd, 12:24–13:12 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9862 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2004: Saturday 22 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": "2004-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-22", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2004 falls on Saturday 22 May. Caturthī runs from 07:16 on Sat 22 May to 09:39 on Sun 23 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/vinayaka-chaturthi?on=2004-05-22", "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/2004/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1001, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2004-05-24T11:46:20-05:00", "utc": "2004-05-24T16:46:20Z", "ms": 1085417180411.4386 }, "end": { "local": "2004-05-25T13:28:31-05:00", "utc": "2004-05-25T18:28:31Z", "ms": 1085509710583.4672 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-24T11:46:20-05:00", "utc": "2004-05-24T16:46:20Z", "ms": 1085417180411.4386 }, "end": { "local": "2004-05-25T13:28:31-05:00", "utc": "2004-05-25T18:28:31Z", "ms": 1085509710583.4672 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-05-24", "window": { "start": { "local": "2004-05-24T12:23:44-05:00", "utc": "2004-05-24T17:23:44Z", "ms": 1085419423561.1932 }, "end": { "local": "2004-05-24T13:11:44-05:00", "utc": "2004-05-24T18:11:44Z", "ms": 1085422303561.1932 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-05-25", "window": { "start": { "local": "2004-05-25T12:23:49-05:00", "utc": "2004-05-25T17:23:49Z", "ms": 1085505829319.4402 }, "end": { "local": "2004-05-25T13:11:49-05:00", "utc": "2004-05-25T18:11:49Z", "ms": 1085508709319.4402 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 11:46 on Mon 24 May to 13:29 on Tue 25 May.", "fact": "2004-05-24T16:46:20Z → 2004-05-25T18:28:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 24th, 12:24–13:12 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 1001 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Chicago, 2004: Monday 24 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi-jyaishtha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-05-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-24", "confidence": "determinate" } ], "quote": "In Chicago, Skanda Ṣaṣṭhī (Jyaiṣṭha) 2004 falls on Monday 24 May. Ṣaṣṭhī runs from 11:46 on Mon 24 May to 13:29 on Tue 25 May and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1001, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2004-05-24T11:46:20-05:00", "utc": "2004-05-24T16:46:20Z", "ms": 1085417180411.4386 }, "end": { "local": "2004-05-25T13:28:31-05:00", "utc": "2004-05-25T18:28:31Z", "ms": 1085509710583.4672 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-24T11:46:20-05:00", "utc": "2004-05-24T16:46:20Z", "ms": 1085417180411.4386 }, "end": { "local": "2004-05-25T13:28:31-05:00", "utc": "2004-05-25T18:28:31Z", "ms": 1085509710583.4672 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-05-24", "window": { "start": { "local": "2004-05-24T12:23:44-05:00", "utc": "2004-05-24T17:23:44Z", "ms": 1085419423561.1932 }, "end": { "local": "2004-05-24T13:11:44-05:00", "utc": "2004-05-24T18:11:44Z", "ms": 1085422303561.1932 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-05-25", "window": { "start": { "local": "2004-05-25T12:23:49-05:00", "utc": "2004-05-25T17:23:49Z", "ms": 1085505829319.4402 }, "end": { "local": "2004-05-25T13:11:49-05:00", "utc": "2004-05-25T18:11:49Z", "ms": 1085508709319.4402 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 11:46 on Mon 24 May to 13:29 on Tue 25 May.", "fact": "2004-05-24T16:46:20Z → 2004-05-25T18:28:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 24th, 12:24–13:12 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 1001 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Chicago, 2004: Tuesday 25 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aranya-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-05-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-25", "confidence": "determinate" } ], "quote": "In Chicago, Araṇya Gaurī Vrata 2004 falls on Tuesday 25 May. Ṣaṣṭhī runs from 11:46 on Mon 24 May to 13:29 on Tue 25 May and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-05-30", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24079, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-05-29T13:47:30-05:00", "utc": "2004-05-29T18:47:30Z", "ms": 1085856450138.8689 }, "end": { "local": "2004-05-30T12:00:25-05:00", "utc": "2004-05-30T17:00:25Z", "ms": 1085936425301.4324 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-29T13:47:30-05:00", "utc": "2004-05-29T18:47:30Z", "ms": 1085856450138.8689 }, "end": { "local": "2004-05-30T12:00:25-05:00", "utc": "2004-05-30T17:00:25Z", "ms": 1085936425301.4324 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-05-29", "window": { "start": { "local": "2004-05-29T05:19:38-05:00", "utc": "2004-05-29T10:19:38Z", "ms": 1085825977990.6302 }, "end": { "local": "2004-05-29T05:19:38-05:00", "utc": "2004-05-29T10:19:38Z", "ms": 1085825977990.6302 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-05-30", "window": { "start": { "local": "2004-05-30T05:19:06-05:00", "utc": "2004-05-30T10:19:06Z", "ms": 1085912346084.3214 }, "end": { "local": "2004-05-30T05:19:06-05:00", "utc": "2004-05-30T10:19:06Z", "ms": 1085912346084.3214 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 13:48 on Sat 29 May to 12:00 on Sun 30 May.", "fact": "2004-05-29T18:47:30Z → 2004-05-30T17:00:25Z" }, { "step": "kaala", "text": "Sunrise is at 05:20 on the 29th and 05:19 on the 30th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 29th and is on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24079 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Chicago, 2004: Sunday 30 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": "2004-05-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-30", "confidence": "determinate" } ], "quote": "In Chicago, Nirjalā Ekādaśī 2004 falls on Sunday 30 May. Ekādaśī runs from 13:48 on Sat 29 May to 12:00 on Sun 30 May and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-05-30", "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/2004/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1439, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2004-05-30T12:00:25-05:00", "utc": "2004-05-30T17:00:25Z", "ms": 1085936425301.4324 }, "end": { "local": "2004-05-31T09:32:50-05:00", "utc": "2004-05-31T14:32:50Z", "ms": 1086013969923.5846 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-30T12:00:25-05:00", "utc": "2004-05-30T17:00:25Z", "ms": 1085936425301.4324 }, "end": { "local": "2004-05-31T09:32:50-05:00", "utc": "2004-05-31T14:32:50Z", "ms": 1086013969923.5846 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-05-30", "window": { "start": { "local": "2004-05-30T12:24:25-05:00", "utc": "2004-05-30T17:24:25Z", "ms": 1085937864656.0879 }, "end": { "local": "2004-05-30T13:12:25-05:00", "utc": "2004-05-30T18:12:25Z", "ms": 1085940744656.0879 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-05-31", "window": { "start": { "local": "2004-05-31T12:24:33-05:00", "utc": "2004-05-31T17:24:33Z", "ms": 1086024272940.377 }, "end": { "local": "2004-05-31T13:12:33-05:00", "utc": "2004-05-31T18:12:33Z", "ms": 1086027152940.377 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 12:00 on Sun 30 May to 09:33 on Mon 31 May.", "fact": "2004-05-30T17:00:25Z → 2004-05-31T14:32:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:24–13:12 on the 30th, 12:25–13:13 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 30th and 0 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 1439 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Chicago, 2004: Sunday 30 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-rama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Sri Rama dvadasi (purvaviddha), Campaka dvadasi (Orissa) (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-05-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-30", "confidence": "determinate" } ], "quote": "In Chicago, Śrī Rāma Dvādaśī 2004 falls on Sunday 30 May. Dvādaśī runs from 12:00 on Sun 30 May to 09:33 on Mon 31 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/pradosha-vrata?on=2004-05-31", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-05-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32445, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-05-31T09:32:50-05:00", "utc": "2004-05-31T14:32:50Z", "ms": 1086013969923.5846 }, "end": { "local": "2004-06-01T06:31:12-05:00", "utc": "2004-06-01T11:31:12Z", "ms": 1086089472053.1819 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2004-05-31T09:32:50-05:00", "utc": "2004-05-31T14:32:50Z", "ms": 1086013969923.5846 }, "end": { "local": "2004-06-01T06:31:12-05:00", "utc": "2004-06-01T11:31:12Z", "ms": 1086089472053.1819 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-05-30", "window": { "start": { "local": "2004-05-30T20:17:43-05:00", "utc": "2004-05-31T01:17:43Z", "ms": 1085966263227.8545 }, "end": { "local": "2004-05-30T21:29:50-05:00", "utc": "2004-05-31T02:29:50Z", "ms": 1085970590287.578 } }, "covered_min": 0, "window_min": 72, "qualifies": false }, { "local_date": "2004-05-31", "window": { "start": { "local": "2004-05-31T20:18:30-05:00", "utc": "2004-06-01T01:18:30Z", "ms": 1086052709704.9727 }, "end": { "local": "2004-05-31T21:30:27-05:00", "utc": "2004-06-01T02:30:27Z", "ms": 1086057026848.184 } }, "covered_min": 72, "window_min": 72, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 09:33 on Mon 31 May to 06:31 on Tue 1 Jun.", "fact": "2004-05-31T14:32:50Z → 2004-06-01T11:31:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:18–21:30 on the 30th, 20:18–21:30 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 72 minutes on the 30th and 72 of 72 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 32445 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2004: Monday 31 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": "2004-05-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-05-31", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2004 falls on Monday 31 May. Trayodaśī runs from 09:33 on Mon 31 May to 06:31 on Tue 1 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-05-31", "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/2004/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-06-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6477, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-06-02T03:03:41-05:00", "utc": "2004-06-02T08:03:41Z", "ms": 1086163420637.6702 }, "end": { "local": "2004-06-02T23:19:35-05:00", "utc": "2004-06-03T04:19:35Z", "ms": 1086236374611.9591 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2004-06-02T03:03:41-05:00", "utc": "2004-06-02T08:03:41Z", "ms": 1086163420637.6702 }, "end": { "local": "2004-06-02T23:19:35-05:00", "utc": "2004-06-03T04:19:35Z", "ms": 1086236374611.9591 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-06-01", "window": { "start": { "local": "2004-06-01T20:19:15-05:00", "utc": "2004-06-02T01:19:15Z", "ms": 1086139154922.8748 }, "end": { "local": "2004-06-01T21:31:03-05:00", "utc": "2004-06-02T02:31:03Z", "ms": 1086143462587.485 } }, "covered_min": 0, "window_min": 72, "qualifies": false }, { "local_date": "2004-06-02", "window": { "start": { "local": "2004-06-02T20:19:59-05:00", "utc": "2004-06-03T01:19:59Z", "ms": 1086225598845.4105 }, "end": { "local": "2004-06-02T21:31:37-05:00", "utc": "2004-06-03T02:31:37Z", "ms": 1086229897475.8817 } }, "covered_min": 72, "window_min": 72, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 03:04 on Wed 2 Jun to 23:20 on Wed 2 Jun.", "fact": "2004-06-02T08:03:41Z → 2004-06-03T04:19:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:19–21:31 on the 1st, 20:20–21:32 on the 2nd.", "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 1st and 72 of 72 on the 2nd.", "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 6477 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Chicago, 2004: Wednesday 2 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": "2004-06-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-06-02", "confidence": "determinate" } ], "quote": "In Chicago, Vaṭa Sāvitrī Vrata 2004 falls on Wednesday 2 June. Pūrṇimā runs from 03:04 on Wed 2 Jun to 23:20 on Wed 2 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/sankashta-chaturthi?on=2004-06-05", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-06-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33546, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-06-05T12:09:31-05:00", "utc": "2004-06-05T17:09:31Z", "ms": 1086455371389.6495 }, "end": { "local": "2004-06-06T09:00:58-05:00", "utc": "2004-06-06T14:00:58Z", "ms": 1086530457549.5923 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-06-05T12:09:31-05:00", "utc": "2004-06-05T17:09:31Z", "ms": 1086455371389.6495 }, "end": { "local": "2004-06-06T09:00:58-05:00", "utc": "2004-06-06T14:00:58Z", "ms": 1086530457549.5923 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-06-04", "window": { "start": { "local": "2004-06-04T22:47:26-05:00", "utc": "2004-06-05T03:47:26Z", "ms": 1086407245573.717 }, "end": { "local": "2004-06-04T22:47:26-05:00", "utc": "2004-06-05T03:47:26Z", "ms": 1086407245573.717 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-06-05", "window": { "start": { "local": "2004-06-05T23:41:52-05:00", "utc": "2004-06-06T04:41:52Z", "ms": 1086496911872.6523 }, "end": { "local": "2004-06-05T23:41:52-05:00", "utc": "2004-06-06T04:41:52Z", "ms": 1086496911872.6523 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:10 on Sat 5 Jun to 09:01 on Sun 6 Jun.", "fact": "2004-06-05T17:09:31Z → 2004-06-06T14:00:58Z" }, { "step": "kaala", "text": "Moonrise is at 22:47 on the 4th and 23:42 on the 5th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 4th and is on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33546 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2004: Saturday 5 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": "2004-06-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-06-05", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2004 falls on Saturday 5 June. Caturthī runs from 12:10 on Sat 5 Jun to 09:01 on Sun 6 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/sankashta-chaturthi?on=2004-06-05", "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/2004/ekadashi?on=2004-06-13", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-06-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2827, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-06-12T04:23:55-05:00", "utc": "2004-06-12T09:23:55Z", "ms": 1087032234540.4553 }, "end": { "local": "2004-06-13T06:02:21-05:00", "utc": "2004-06-13T11:02:21Z", "ms": 1087124540950.391 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-06-12T04:23:55-05:00", "utc": "2004-06-12T09:23:55Z", "ms": 1087032234540.4553 }, "end": { "local": "2004-06-13T06:02:21-05:00", "utc": "2004-06-13T11:02:21Z", "ms": 1087124540950.391 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-06-12", "window": { "start": { "local": "2004-06-12T05:15:17-05:00", "utc": "2004-06-12T10:15:17Z", "ms": 1087035317299.2719 }, "end": { "local": "2004-06-12T05:15:17-05:00", "utc": "2004-06-12T10:15:17Z", "ms": 1087035317299.2719 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-06-13", "window": { "start": { "local": "2004-06-13T05:15:14-05:00", "utc": "2004-06-13T10:15:14Z", "ms": 1087121714229.746 }, "end": { "local": "2004-06-13T05:15:14-05:00", "utc": "2004-06-13T10:15:14Z", "ms": 1087121714229.746 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:24 on Sat 12 Jun to 06:02 on Sun 13 Jun.", "fact": "2004-06-12T09:23:55Z → 2004-06-13T11:02:21Z" }, { "step": "kaala", "text": "Sunrise is at 05:15 on the 12th and 05:15 on the 13th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 12th and is on the 13th.", "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 2827 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Chicago, 2004: Sunday 13 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": "2004-06-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-06-13", "confidence": "determinate" } ], "quote": "In Chicago, Yoginī Ekādaśī 2004 falls on Sunday 13 June. Ekādaśī runs from 04:24 on Sat 12 Jun to 06:02 on Sun 13 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-06-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/pradosha-vrata?on=2004-06-14", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-06-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36014, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-06-14T08:06:21-05:00", "utc": "2004-06-14T13:06:21Z", "ms": 1087218381227.603 }, "end": { "local": "2004-06-15T10:27:01-05:00", "utc": "2004-06-15T15:27:01Z", "ms": 1087313221061.7688 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-06-14T08:06:21-05:00", "utc": "2004-06-14T13:06:21Z", "ms": 1087218381227.603 }, "end": { "local": "2004-06-15T10:27:01-05:00", "utc": "2004-06-15T15:27:01Z", "ms": 1087313221061.7688 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-06-14", "window": { "start": { "local": "2004-06-14T20:26:51-05:00", "utc": "2004-06-15T01:26:51Z", "ms": 1087262811013.0457 }, "end": { "local": "2004-06-14T21:37:18-05:00", "utc": "2004-06-15T02:37:18Z", "ms": 1087267038112.2418 } }, "covered_min": 70, "window_min": 70, "qualifies": true }, { "local_date": "2004-06-15", "window": { "start": { "local": "2004-06-15T20:27:15-05:00", "utc": "2004-06-16T01:27:15Z", "ms": 1087349234589.2107 }, "end": { "local": "2004-06-15T21:37:39-05:00", "utc": "2004-06-16T02:37:39Z", "ms": 1087353458953.8683 } }, "covered_min": 0, "window_min": 70, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:06 on Mon 14 Jun to 10:27 on Tue 15 Jun.", "fact": "2004-06-14T13:06:21Z → 2004-06-15T15:27:01Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:27–21:37 on the 14th, 20:27–21:38 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 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. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36014 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2004: Monday 14 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": "2004-06-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-06-14", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2004 falls on Monday 14 June. Trayodaśī runs from 08:06 on Mon 14 Jun to 10:27 on Tue 15 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-06-14", "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/2004/shivaratri?on=2004-06-15", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-06-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33118, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-06-15T10:27:01-05:00", "utc": "2004-06-15T15:27:01Z", "ms": 1087313221061.7688 }, "end": { "local": "2004-06-16T12:56:09-05:00", "utc": "2004-06-16T17:56:09Z", "ms": 1087408569177.1553 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-06-15T10:27:01-05:00", "utc": "2004-06-15T15:27:01Z", "ms": 1087313221061.7688 }, "end": { "local": "2004-06-16T12:56:09-05:00", "utc": "2004-06-16T17:56:09Z", "ms": 1087408569177.1553 } }, "kaala": "nishita", "days": [ { "local_date": "2004-06-14", "window": { "start": { "local": "2004-06-15T00:27:03-05:00", "utc": "2004-06-15T05:27:03Z", "ms": 1087277222635.0311 }, "end": { "local": "2004-06-15T01:15:03-05:00", "utc": "2004-06-15T06:15:03Z", "ms": 1087280102635.0311 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-06-15", "window": { "start": { "local": "2004-06-16T00:27:16-05:00", "utc": "2004-06-16T05:27:16Z", "ms": 1087363635956.6765 }, "end": { "local": "2004-06-16T01:15:16-05:00", "utc": "2004-06-16T06:15:16Z", "ms": 1087366515956.6765 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:27 on Tue 15 Jun to 12:56 on Wed 16 Jun.", "fact": "2004-06-15T15:27:01Z → 2004-06-16T17:56:09Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:27–01:15 on the 14th, 00:27–01:15 on the 15th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33118 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2004: Tuesday 15 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": "2004-06-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-06-15", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2004 falls on Tuesday 15 June. Caturdaśī runs from 10:27 on Tue 15 Jun to 12:56 on Wed 16 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/shivaratri?on=2004-06-15", "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/2004/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-06-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16636, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2004-06-18T17:53:08-05:00", "utc": "2004-06-18T22:53:08Z", "ms": 1087599188278.6367 }, "end": { "local": "2004-06-19T20:10:11-05:00", "utc": "2004-06-20T01:10:11Z", "ms": 1087693810734.0426 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-06-18T17:53:08-05:00", "utc": "2004-06-18T22:53:08Z", "ms": 1087599188278.6367 }, "end": { "local": "2004-06-19T20:10:11-05:00", "utc": "2004-06-20T01:10:11Z", "ms": 1087693810734.0426 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-06-18", "window": { "start": { "local": "2004-06-18T12:27:52-05:00", "utc": "2004-06-18T17:27:52Z", "ms": 1087579671824.4583 }, "end": { "local": "2004-06-18T13:15:52-05:00", "utc": "2004-06-18T18:15:52Z", "ms": 1087582551824.4583 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-06-19", "window": { "start": { "local": "2004-06-19T12:28:04-05:00", "utc": "2004-06-19T17:28:04Z", "ms": 1087666084363.9492 }, "end": { "local": "2004-06-19T13:16:04-05:00", "utc": "2004-06-19T18:16:04Z", "ms": 1087668964363.9492 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 17:53 on Fri 18 Jun to 20:10 on Sat 19 Jun.", "fact": "2004-06-18T22:53:08Z → 2004-06-20T01:10:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 18th, 12:28–13:16 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16636 s" }, { "step": "ruling", "text": "Rathayātrā, Chicago, 2004: Saturday 19 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rathayatra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Rathayatra (paraviddha, special when combined with naksatra 'Pusya')" } ], "not_evaluated": "The row calls the day special with Puṣya nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-06-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-06-19", "confidence": "determinate" } ], "quote": "In Chicago, Rathayātrā 2004 falls on Saturday 19 June. Dvitīyā runs from 17:53 on Fri 18 Jun to 20:10 on Sat 19 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/vinayaka-chaturthi?on=2004-06-21", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-06-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32208, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-06-20T22:13:05-05:00", "utc": "2004-06-21T03:13:05Z", "ms": 1087787584802.9404 }, "end": { "local": "2004-06-21T23:56:44-05:00", "utc": "2004-06-22T04:56:44Z", "ms": 1087880204088.0494 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-06-20T22:13:05-05:00", "utc": "2004-06-21T03:13:05Z", "ms": 1087787584802.9404 }, "end": { "local": "2004-06-21T23:56:44-05:00", "utc": "2004-06-22T04:56:44Z", "ms": 1087880204088.0494 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-06-20", "window": { "start": { "local": "2004-06-20T12:28:17-05:00", "utc": "2004-06-20T17:28:17Z", "ms": 1087752496895.2 }, "end": { "local": "2004-06-20T13:16:17-05:00", "utc": "2004-06-20T18:16:17Z", "ms": 1087755376895.2 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-06-21", "window": { "start": { "local": "2004-06-21T12:28:29-05:00", "utc": "2004-06-21T17:28:29Z", "ms": 1087838909391.6708 }, "end": { "local": "2004-06-21T13:16:29-05:00", "utc": "2004-06-21T18:16:29Z", "ms": 1087841789391.6708 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:13 on Sun 20 Jun to 23:57 on Mon 21 Jun.", "fact": "2004-06-21T03:13:05Z → 2004-06-22T04:56:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 20th, 12:28–13:16 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32208 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2004: Monday 21 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": "2004-06-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-06-21", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2004 falls on Monday 21 June. Caturthī runs from 22:13 on Sun 20 Jun to 23:57 on Mon 21 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/vinayaka-chaturthi?on=2004-06-21", "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/2004/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-06-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38415, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2004-06-21T23:56:44-05:00", "utc": "2004-06-22T04:56:44Z", "ms": 1087880204088.0494 }, "end": { "local": "2004-06-23T01:15:36-05:00", "utc": "2004-06-23T06:15:36Z", "ms": 1087971336087.1124 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-06-21T23:56:44-05:00", "utc": "2004-06-22T04:56:44Z", "ms": 1087880204088.0494 }, "end": { "local": "2004-06-23T01:15:36-05:00", "utc": "2004-06-23T06:15:36Z", "ms": 1087971336087.1124 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-06-21", "window": { "start": { "local": "2004-06-21T12:28:29-05:00", "utc": "2004-06-21T17:28:29Z", "ms": 1087838909391.6708 }, "end": { "local": "2004-06-21T13:16:29-05:00", "utc": "2004-06-21T18:16:29Z", "ms": 1087841789391.6708 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-06-22", "window": { "start": { "local": "2004-06-22T12:28:42-05:00", "utc": "2004-06-22T17:28:42Z", "ms": 1087925321827.116 }, "end": { "local": "2004-06-22T13:16:42-05:00", "utc": "2004-06-22T18:16:42Z", "ms": 1087928201827.116 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 23:57 on Mon 21 Jun to 01:16 on Wed 23 Jun.", "fact": "2004-06-22T04:56:44Z → 2004-06-23T06:15:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 21st, 12:29–13:17 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38415 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Chicago, 2004: Tuesday 22 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Skanda pancami (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-06-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-06-22", "confidence": "determinate" } ], "quote": "In Chicago, Skanda Pañcamī 2004 falls on Tuesday 22 June. Pañcamī runs from 23:57 on Mon 21 Jun to 01:16 on Wed 23 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-06-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36770, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2004-06-24T02:03:57-05:00", "utc": "2004-06-24T07:03:57Z", "ms": 1088060637024.0225 }, "end": { "local": "2004-06-25T02:16:29-05:00", "utc": "2004-06-25T07:16:29Z", "ms": 1088147788614.6029 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-06-24T02:03:57-05:00", "utc": "2004-06-24T07:03:57Z", "ms": 1088060637024.0225 }, "end": { "local": "2004-06-25T02:16:29-05:00", "utc": "2004-06-25T07:16:29Z", "ms": 1088147788614.6029 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-06-24", "window": { "start": { "local": "2004-06-24T12:29:06-05:00", "utc": "2004-06-24T17:29:06Z", "ms": 1088098146412.3451 }, "end": { "local": "2004-06-24T13:17:06-05:00", "utc": "2004-06-24T18:17:06Z", "ms": 1088101026412.3451 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-06-25", "window": { "start": { "local": "2004-06-25T12:29:19-05:00", "utc": "2004-06-25T17:29:19Z", "ms": 1088184558512.516 }, "end": { "local": "2004-06-25T13:17:19-05:00", "utc": "2004-06-25T18:17:19Z", "ms": 1088187438512.516 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 02:04 on Thu 24 Jun to 02:16 on Fri 25 Jun.", "fact": "2004-06-24T07:03:57Z → 2004-06-25T07:16:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:29–13:17 on the 24th, 12:29–13:17 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 36770 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Chicago, 2004: Thursday 24 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vivasvat-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Vivasvat saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-06-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-06-24", "confidence": "determinate" } ], "quote": "In Chicago, Vivasvat Saptamī 2004 falls on Thursday 24 June. Saptamī runs from 02:04 on Thu 24 Jun to 02:16 on Fri 25 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-06-28", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-06-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23381, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-06-27T22:48:43-05:00", "utc": "2004-06-28T03:48:43Z", "ms": 1088394522619.4586 }, "end": { "local": "2004-06-28T20:19:01-05:00", "utc": "2004-06-29T01:19:01Z", "ms": 1088471940631.5636 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-06-27T22:48:43-05:00", "utc": "2004-06-28T03:48:43Z", "ms": 1088394522619.4586 }, "end": { "local": "2004-06-28T20:19:01-05:00", "utc": "2004-06-29T01:19:01Z", "ms": 1088471940631.5636 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-06-28", "window": { "start": { "local": "2004-06-28T05:18:24-05:00", "utc": "2004-06-28T10:18:24Z", "ms": 1088417904070.8826 }, "end": { "local": "2004-06-28T05:18:24-05:00", "utc": "2004-06-28T10:18:24Z", "ms": 1088417904070.8826 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-06-29", "window": { "start": { "local": "2004-06-29T05:18:51-05:00", "utc": "2004-06-29T10:18:51Z", "ms": 1088504331253.14 }, "end": { "local": "2004-06-29T05:18:51-05:00", "utc": "2004-06-29T10:18:51Z", "ms": 1088504331253.14 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:49 on Sun 27 Jun to 20:19 on Mon 28 Jun.", "fact": "2004-06-28T03:48:43Z → 2004-06-29T01:19:01Z" }, { "step": "kaala", "text": "Sunrise is at 05:18 on the 28th and 05:19 on the 29th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 28th and is not on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23381 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Chicago, 2004: Monday 28 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": "2004-06-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-06-28", "confidence": "determinate" } ], "quote": "In Chicago, Hariśayanī Ekādaśī 2004 falls on Monday 28 June. Ekādaśī runs from 22:49 on Sun 27 Jun to 20:19 on Mon 28 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-06-28", "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/2004/pradosha-vrata?on=2004-06-29", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-06-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11598, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-06-29T17:16:01-05:00", "utc": "2004-06-29T22:16:01Z", "ms": 1088547360581.2997 }, "end": { "local": "2004-06-30T13:47:08-05:00", "utc": "2004-06-30T18:47:08Z", "ms": 1088621227974.4841 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-06-29T17:16:01-05:00", "utc": "2004-06-29T22:16:01Z", "ms": 1088547360581.2997 }, "end": { "local": "2004-06-30T13:47:08-05:00", "utc": "2004-06-30T18:47:08Z", "ms": 1088621227974.4841 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-06-29", "window": { "start": { "local": "2004-06-29T20:29:19-05:00", "utc": "2004-06-30T01:29:19Z", "ms": 1088558958946.1283 }, "end": { "local": "2004-06-29T21:39:59-05:00", "utc": "2004-06-30T02:39:59Z", "ms": 1088563199095.8905 } }, "covered_min": 71, "window_min": 71, "qualifies": true }, { "local_date": "2004-06-30", "window": { "start": { "local": "2004-06-30T20:29:12-05:00", "utc": "2004-07-01T01:29:12Z", "ms": 1088645352316.3313 }, "end": { "local": "2004-06-30T21:39:57-05:00", "utc": "2004-07-01T02:39:57Z", "ms": 1088649597405.4154 } }, "covered_min": 0, "window_min": 71, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:16 on Tue 29 Jun to 13:47 on Wed 30 Jun.", "fact": "2004-06-29T22:16:01Z → 2004-06-30T18:47:08Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:29–21:40 on the 29th, 20:29–21:40 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 71 of 71 minutes on the 29th and 0 of 71 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 11598 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2004: Tuesday 29 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": "2004-06-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-06-29", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2004 falls on Tuesday 29 June. Trayodaśī runs from 17:16 on Tue 29 Jun to 13:47 on Wed 30 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-06-29", "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/2004/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-07-01", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 2912, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-07-01T10:01:23-05:00", "utc": "2004-07-01T15:01:23Z", "ms": 1088694083362.1036 }, "end": { "local": "2004-07-02T06:08:55-05:00", "utc": "2004-07-02T11:08:55Z", "ms": 1088766534639.6721 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-07-01T10:01:23-05:00", "utc": "2004-07-01T15:01:23Z", "ms": 1088694083362.1036 }, "end": { "local": "2004-07-02T06:08:55-05:00", "utc": "2004-07-02T11:08:55Z", "ms": 1088766534639.6721 } }, "kaala": "udaya-3", "days": [ { "local_date": "2004-07-01", "window": { "start": { "local": "2004-07-01T05:19:50-05:00", "utc": "2004-07-01T10:19:50Z", "ms": 1088677190484.4623 }, "end": { "local": "2004-07-01T08:21:41-05:00", "utc": "2004-07-01T13:21:41Z", "ms": 1088688101102.3384 } }, "covered_min": 0, "window_min": 182, "qualifies": false }, { "local_date": "2004-07-02", "window": { "start": { "local": "2004-07-02T05:20:22-05:00", "utc": "2004-07-02T10:20:22Z", "ms": 1088763622463.9635 }, "end": { "local": "2004-07-02T08:22:05-05:00", "utc": "2004-07-02T13:22:05Z", "ms": 1088774524515.6244 } }, "covered_min": 49, "window_min": 182, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:01 on Thu 1 Jul to 06:09 on Fri 2 Jul.", "fact": "2004-07-01T15:01:23Z → 2004-07-02T11:08:55Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:20–08:22 on the 1st, 05:20–08:22 on the 2nd.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must hold through the first three muhūrtas after sunrise. It covers 0 of 182 minutes on the 1st and 49 of 182 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither morning qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 2912 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Chicago, 2004: Thursday 1 July.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "vyasa-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "udaya-3", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-07-01", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-07-01", "confidence": "boundary" } ], "quote": "In Chicago, Vyāsa Pūjā 2004 falls on Thursday 1 July. Pūrṇimā runs from 10:01 on Thu 1 Jul to 06:09 on Fri 2 Jul, and reaches the first three muhūrtas after sunrise on neither day.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-07-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8944, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-07-01T10:01:23-05:00", "utc": "2004-07-01T15:01:23Z", "ms": 1088694083362.1036 }, "end": { "local": "2004-07-02T06:08:55-05:00", "utc": "2004-07-02T11:08:55Z", "ms": 1088766534639.6721 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-07-01T10:01:23-05:00", "utc": "2004-07-01T15:01:23Z", "ms": 1088694083362.1036 }, "end": { "local": "2004-07-02T06:08:55-05:00", "utc": "2004-07-02T11:08:55Z", "ms": 1088766534639.6721 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-07-01", "window": { "start": { "local": "2004-07-01T12:30:27-05:00", "utc": "2004-07-01T17:30:27Z", "ms": 1088703027029.1526 }, "end": { "local": "2004-07-01T13:18:27-05:00", "utc": "2004-07-01T18:18:27Z", "ms": 1088705907029.1526 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-07-02", "window": { "start": { "local": "2004-07-02T12:30:38-05:00", "utc": "2004-07-02T17:30:38Z", "ms": 1088789437593.1156 }, "end": { "local": "2004-07-02T13:18:38-05:00", "utc": "2004-07-02T18:18:38Z", "ms": 1088792317593.1156 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:01 on Thu 1 Jul to 06:09 on Fri 2 Jul.", "fact": "2004-07-01T15:01:23Z → 2004-07-02T11:08:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 1st, 12:31–13:19 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8944 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Chicago, 2004: Thursday 1 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": "2004-07-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-07-01", "confidence": "determinate" } ], "quote": "In Chicago, Guru Pūrṇimā 2004 falls on Thursday 1 July. Pūrṇimā runs from 10:01 on Thu 1 Jul to 06:09 on Fri 2 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-07-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26750, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-07-01T10:01:23-05:00", "utc": "2004-07-01T15:01:23Z", "ms": 1088694083362.1036 }, "end": { "local": "2004-07-02T06:08:55-05:00", "utc": "2004-07-02T11:08:55Z", "ms": 1088766534639.6721 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-07-01T10:01:23-05:00", "utc": "2004-07-01T15:01:23Z", "ms": 1088694083362.1036 }, "end": { "local": "2004-07-02T06:08:55-05:00", "utc": "2004-07-02T11:08:55Z", "ms": 1088766534639.6721 } }, "kaala": "sayahna", "days": [ { "local_date": "2004-07-01", "window": { "start": { "local": "2004-07-01T17:27:13-05:00", "utc": "2004-07-01T22:27:13Z", "ms": 1088720832955.9668 }, "end": { "local": "2004-07-01T20:29:04-05:00", "utc": "2004-07-02T01:29:04Z", "ms": 1088731743573.8429 } }, "covered_min": 182, "window_min": 182, "qualifies": true }, { "local_date": "2004-07-02", "window": { "start": { "local": "2004-07-02T17:27:11-05:00", "utc": "2004-07-02T22:27:11Z", "ms": 1088807230670.6068 }, "end": { "local": "2004-07-02T20:28:53-05:00", "utc": "2004-07-03T01:28:53Z", "ms": 1088818132722.2677 } }, "covered_min": 0, "window_min": 182, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:01 on Thu 1 Jul to 06:09 on Fri 2 Jul.", "fact": "2004-07-01T15:01:23Z → 2004-07-02T11:08:55Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 17:27–20:29 on the 1st, 17:27–20:29 on the 2nd.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 182 of 182 minutes on the 1st and 0 of 182 on the 2nd.", "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 26750 s" }, { "step": "ruling", "text": "Kokilā Vrata, Chicago, 2004: Thursday 1 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": "2004-07-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-07-01", "confidence": "determinate" } ], "quote": "In Chicago, Kokilā Vrata 2004 falls on Thursday 1 July. Pūrṇimā runs from 10:01 on Thu 1 Jul to 06:09 on Fri 2 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-07-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30541, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-07-01T10:01:23-05:00", "utc": "2004-07-01T15:01:23Z", "ms": 1088694083362.1036 }, "end": { "local": "2004-07-02T06:08:55-05:00", "utc": "2004-07-02T11:08:55Z", "ms": 1088766534639.6721 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2004-07-01T10:01:23-05:00", "utc": "2004-07-01T15:01:23Z", "ms": 1088694083362.1036 }, "end": { "local": "2004-07-02T06:08:55-05:00", "utc": "2004-07-02T11:08:55Z", "ms": 1088766534639.6721 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-06-30", "window": { "start": { "local": "2004-06-30T20:29:12-05:00", "utc": "2004-07-01T01:29:12Z", "ms": 1088645352316.3313 }, "end": { "local": "2004-06-30T21:39:57-05:00", "utc": "2004-07-01T02:39:57Z", "ms": 1088649597405.4154 } }, "covered_min": 0, "window_min": 71, "qualifies": false }, { "local_date": "2004-07-01", "window": { "start": { "local": "2004-07-01T20:29:04-05:00", "utc": "2004-07-02T01:29:04Z", "ms": 1088731743573.8429 }, "end": { "local": "2004-07-01T21:39:54-05:00", "utc": "2004-07-02T02:39:54Z", "ms": 1088735994092.5256 } }, "covered_min": 71, "window_min": 71, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:01 on Thu 1 Jul to 06:09 on Fri 2 Jul.", "fact": "2004-07-01T15:01:23Z → 2004-07-02T11:08:55Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:29–21:40 on the 30th, 20:29–21:40 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 0 of 71 minutes on the 30th and 71 of 71 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30541 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Chicago, 2004: Thursday 1 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": "2004-07-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-07-01", "confidence": "determinate" } ], "quote": "In Chicago, Śiva Śayanotsava 2004 falls on Thursday 1 July. Pūrṇimā runs from 10:01 on Thu 1 Jul to 06:09 on Fri 2 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-07-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1887, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2004-07-03T02:20:31-05:00", "utc": "2004-07-03T07:20:31Z", "ms": 1088839230688.6506 }, "end": { "local": "2004-07-03T22:47:15-05:00", "utc": "2004-07-04T03:47:15Z", "ms": 1088912834897.0269 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-07-03T02:20:31-05:00", "utc": "2004-07-03T07:20:31Z", "ms": 1088839230688.6506 }, "end": { "local": "2004-07-03T22:47:15-05:00", "utc": "2004-07-04T03:47:15Z", "ms": 1088912834897.0269 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-07-02", "window": { "start": { "local": "2004-07-02T21:27:09-05:00", "utc": "2004-07-03T02:27:09Z", "ms": 1088821628535.0972 }, "end": { "local": "2004-07-02T21:27:09-05:00", "utc": "2004-07-03T02:27:09Z", "ms": 1088821628535.0972 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-07-03", "window": { "start": { "local": "2004-07-03T22:15:48-05:00", "utc": "2004-07-04T03:15:48Z", "ms": 1088910947860.2025 }, "end": { "local": "2004-07-03T22:15:48-05:00", "utc": "2004-07-04T03:15:48Z", "ms": 1088910947860.2025 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 02:21 on Sat 3 Jul to 22:47 on Sat 3 Jul.", "fact": "2004-07-03T07:20:31Z → 2004-07-04T03:47:15Z" }, { "step": "kaala", "text": "Moonrise is at 21:27 on the 2nd and 22:16 on the 3rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 2nd and is on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1887 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Chicago, 2004: Saturday 3 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": "2004-07-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-07-03", "confidence": "determinate" } ], "quote": "In Chicago, Aśūnya Śayana Vrata (Āṣāḍha) 2004 falls on Saturday 3 July. Dvitīyā runs from 02:21 on Sat 3 Jul to 22:47 on Sat 3 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/sankashta-chaturthi?on=2004-07-04", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-07-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11592, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-07-04T19:39:55-05:00", "utc": "2004-07-05T00:39:55Z", "ms": 1088987995173.099 }, "end": { "local": "2004-07-05T17:08:27-05:00", "utc": "2004-07-05T22:08:27Z", "ms": 1089065306505.1351 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-07-04T19:39:55-05:00", "utc": "2004-07-05T00:39:55Z", "ms": 1088987995173.099 }, "end": { "local": "2004-07-05T17:08:27-05:00", "utc": "2004-07-05T22:08:27Z", "ms": 1089065306505.1351 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-07-04", "window": { "start": { "local": "2004-07-04T22:53:07-05:00", "utc": "2004-07-05T03:53:07Z", "ms": 1088999587303.1559 }, "end": { "local": "2004-07-04T22:53:07-05:00", "utc": "2004-07-05T03:53:07Z", "ms": 1088999587303.1559 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-07-05", "window": { "start": { "local": "2004-07-05T23:22:33-05:00", "utc": "2004-07-06T04:22:33Z", "ms": 1089087753190.2113 }, "end": { "local": "2004-07-05T23:22:33-05:00", "utc": "2004-07-06T04:22:33Z", "ms": 1089087753190.2113 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:40 on Sun 4 Jul to 17:08 on Mon 5 Jul.", "fact": "2004-07-05T00:39:55Z → 2004-07-05T22:08:27Z" }, { "step": "kaala", "text": "Moonrise is at 22:53 on the 4th and 23:23 on the 5th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 4th and is not on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11592 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2004: Sunday 4 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": "2004-07-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-07-04", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2004 falls on Sunday 4 July. Caturthī runs from 19:40 on Sun 4 Jul to 17:08 on Mon 5 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/sankashta-chaturthi?on=2004-07-04", "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/2004/ekadashi?on=2004-07-12", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-07-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31004, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-07-11T18:29:02-05:00", "utc": "2004-07-11T23:29:02Z", "ms": 1089588541629.332 }, "end": { "local": "2004-07-12T20:51:03-05:00", "utc": "2004-07-13T01:51:03Z", "ms": 1089683462937.9585 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-07-11T18:29:02-05:00", "utc": "2004-07-11T23:29:02Z", "ms": 1089588541629.332 }, "end": { "local": "2004-07-12T20:51:03-05:00", "utc": "2004-07-13T01:51:03Z", "ms": 1089683462937.9585 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-07-12", "window": { "start": { "local": "2004-07-12T05:27:00-05:00", "utc": "2004-07-12T10:27:00Z", "ms": 1089628020427.06 }, "end": { "local": "2004-07-12T05:27:00-05:00", "utc": "2004-07-12T10:27:00Z", "ms": 1089628020427.06 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-07-13", "window": { "start": { "local": "2004-07-13T05:27:47-05:00", "utc": "2004-07-13T10:27:47Z", "ms": 1089714467148.5339 }, "end": { "local": "2004-07-13T05:27:47-05:00", "utc": "2004-07-13T10:27:47Z", "ms": 1089714467148.5339 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:29 on Sun 11 Jul to 20:51 on Mon 12 Jul.", "fact": "2004-07-11T23:29:02Z → 2004-07-13T01:51:03Z" }, { "step": "kaala", "text": "Sunrise is at 05:27 on the 12th and 05:28 on the 13th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 12th and is not on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31004 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Chicago, 2004: Monday 12 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": "2004-07-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-07-12", "confidence": "determinate" } ], "quote": "In Chicago, Kāmikā Ekādaśī 2004 falls on Monday 12 July. Ekādaśī runs from 18:29 on Sun 11 Jul to 20:51 on Mon 12 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-07-12", "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/2004/pradosha-vrata?on=2004-07-14", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-07-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6333, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-07-13T23:22:40-05:00", "utc": "2004-07-14T04:22:40Z", "ms": 1089778960224.4274 }, "end": { "local": "2004-07-15T01:53:31-05:00", "utc": "2004-07-15T06:53:31Z", "ms": 1089874410899.4563 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-07-13T23:22:40-05:00", "utc": "2004-07-14T04:22:40Z", "ms": 1089778960224.4274 }, "end": { "local": "2004-07-15T01:53:31-05:00", "utc": "2004-07-15T06:53:31Z", "ms": 1089874410899.4563 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-07-13", "window": { "start": { "local": "2004-07-13T20:24:36-05:00", "utc": "2004-07-14T01:24:36Z", "ms": 1089768275782.6653 }, "end": { "local": "2004-07-13T21:37:08-05:00", "utc": "2004-07-14T02:37:08Z", "ms": 1089772627671.4789 } }, "covered_min": 0, "window_min": 73, "qualifies": false }, { "local_date": "2004-07-14", "window": { "start": { "local": "2004-07-14T20:24:00-05:00", "utc": "2004-07-15T01:24:00Z", "ms": 1089854640146.7177 }, "end": { "local": "2004-07-14T21:36:43-05:00", "utc": "2004-07-15T02:36:43Z", "ms": 1089859003297.8442 } }, "covered_min": 73, "window_min": 73, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:23 on Tue 13 Jul to 01:54 on Thu 15 Jul.", "fact": "2004-07-14T04:22:40Z → 2004-07-15T06:53:31Z" }, { "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": "Trayodaśī must be present during pradoṣa. It covers 0 of 73 minutes on the 13th and 73 of 73 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6333 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2004: Wednesday 14 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": "2004-07-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-07-14", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2004 falls on Wednesday 14 July. Trayodaśī runs from 23:23 on Tue 13 Jul to 01:54 on Thu 15 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-07-14", "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/2004/shivaratri?on=2004-07-15", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-07-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1969, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-07-15T01:53:31-05:00", "utc": "2004-07-15T06:53:31Z", "ms": 1089874410899.4563 }, "end": { "local": "2004-07-16T04:15:40-05:00", "utc": "2004-07-16T09:15:40Z", "ms": 1089969340083.2885 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-07-15T01:53:31-05:00", "utc": "2004-07-15T06:53:31Z", "ms": 1089874410899.4563 }, "end": { "local": "2004-07-16T04:15:40-05:00", "utc": "2004-07-16T09:15:40Z", "ms": 1089969340083.2885 } }, "kaala": "nishita", "days": [ { "local_date": "2004-07-14", "window": { "start": { "local": "2004-07-15T00:32:42-05:00", "utc": "2004-07-15T05:32:42Z", "ms": 1089869561963.4421 }, "end": { "local": "2004-07-15T01:20:42-05:00", "utc": "2004-07-15T06:20:42Z", "ms": 1089872441963.4421 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-07-15", "window": { "start": { "local": "2004-07-16T00:32:48-05:00", "utc": "2004-07-16T05:32:48Z", "ms": 1089955968056.8052 }, "end": { "local": "2004-07-16T01:20:48-05:00", "utc": "2004-07-16T06:20:48Z", "ms": 1089958848056.8052 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:54 on Thu 15 Jul to 04:16 on Fri 16 Jul.", "fact": "2004-07-15T06:53:31Z → 2004-07-16T09:15:40Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:33–01:21 on the 14th, 00:33–01:21 on the 15th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1969 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2004: Thursday 15 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": "2004-07-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-07-15", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2004 falls on Thursday 15 July. Caturdaśī runs from 01:54 on Thu 15 Jul to 04:16 on Fri 16 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/shivaratri?on=2004-07-15", "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/2004/vinayaka-chaturthi?on=2004-07-20", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-07-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3060, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-07-20T10:55:30-05:00", "utc": "2004-07-20T15:55:30Z", "ms": 1090338930439.0996 }, "end": { "local": "2004-07-21T11:41:46-05:00", "utc": "2004-07-21T16:41:46Z", "ms": 1090428105610.8503 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-07-20T10:55:30-05:00", "utc": "2004-07-20T15:55:30Z", "ms": 1090338930439.0996 }, "end": { "local": "2004-07-21T11:41:46-05:00", "utc": "2004-07-21T16:41:46Z", "ms": 1090428105610.8503 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-07-20", "window": { "start": { "local": "2004-07-20T12:32:43-05:00", "utc": "2004-07-20T17:32:43Z", "ms": 1090344763419.0768 }, "end": { "local": "2004-07-20T13:20:43-05:00", "utc": "2004-07-20T18:20:43Z", "ms": 1090347643419.0768 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-07-21", "window": { "start": { "local": "2004-07-21T12:32:46-05:00", "utc": "2004-07-21T17:32:46Z", "ms": 1090431165828.8351 }, "end": { "local": "2004-07-21T13:20:46-05:00", "utc": "2004-07-21T18:20:46Z", "ms": 1090434045828.8351 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:56 on Tue 20 Jul to 11:42 on Wed 21 Jul.", "fact": "2004-07-20T15:55:30Z → 2004-07-21T16:41:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:33–13:21 on the 20th, 12:33–13:21 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 20th and 0 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3060 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2004: Tuesday 20 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": "2004-07-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-07-20", "confidence": "boundary" } ], "quote": "In Chicago, Vināyaka Caturthī 2004 falls on Tuesday 20 July. Caturthī runs from 10:56 on Tue 20 Jul to 11:42 on Wed 21 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/vinayaka-chaturthi?on=2004-07-20", "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/2004/ekadashi?on=2004-07-27", "festival": "ekadashi", "name": "Śukla Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-07-27", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 89, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-07-27T05:41:42-05:00", "utc": "2004-07-27T10:41:42Z", "ms": 1090924901977.3296 }, "end": { "local": "2004-07-28T02:50:05-05:00", "utc": "2004-07-28T07:50:05Z", "ms": 1091001004794.1643 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-07-27T05:41:42-05:00", "utc": "2004-07-27T10:41:42Z", "ms": 1090924901977.3296 }, "end": { "local": "2004-07-28T02:50:05-05:00", "utc": "2004-07-28T07:50:05Z", "ms": 1091001004794.1643 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-07-27", "window": { "start": { "local": "2004-07-27T05:40:13-05:00", "utc": "2004-07-27T10:40:13Z", "ms": 1090924813201.7673 }, "end": { "local": "2004-07-27T05:40:13-05:00", "utc": "2004-07-27T10:40:13Z", "ms": 1090924813201.7673 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-07-28", "window": { "start": { "local": "2004-07-28T05:41:11-05:00", "utc": "2004-07-28T10:41:11Z", "ms": 1091011271287.9612 }, "end": { "local": "2004-07-28T05:41:11-05:00", "utc": "2004-07-28T10:41:11Z", "ms": 1091011271287.9612 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:42 on Tue 27 Jul to 02:50 on Wed 28 Jul.", "fact": "2004-07-27T10:41:42Z → 2004-07-28T07:50:05Z" }, { "step": "kaala", "text": "Sunrise is at 05:40 on the 27th and 05:41 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 not on the 28th.", "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 89 s < 300 s" }, { "step": "ruling", "text": "Śukla Ekādaśī, Chicago, 2004: Tuesday 27 July.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-07-27", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-07-27", "confidence": "boundary" } ], "quote": "In Chicago, Śukla Ekādaśī 2004 falls on Tuesday 27 July. Ekādaśī runs from 05:42 on Tue 27 Jul to 02:50 on Wed 28 Jul, and is current at sunrise on neither day. It is 1 min 29 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-07-27", "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/2004/pradosha-vrata?on=2004-07-28", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-07-28", "confidence": "boundary", "boundary_reasons": [ "margin", "absent-unstated" ], "boundary_margin_s": 233, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-07-28T23:36:00-05:00", "utc": "2004-07-29T04:36:00Z", "ms": 1091075759623.9358 }, "end": { "local": "2004-07-29T20:07:25-05:00", "utc": "2004-07-30T01:07:25Z", "ms": 1091149645218.6488 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-07-28T23:36:00-05:00", "utc": "2004-07-29T04:36:00Z", "ms": 1091075759623.9358 }, "end": { "local": "2004-07-29T20:07:25-05:00", "utc": "2004-07-30T01:07:25Z", "ms": 1091149645218.6488 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-07-28", "window": { "start": { "local": "2004-07-28T20:12:21-05:00", "utc": "2004-07-29T01:12:21Z", "ms": 1091063541021.3192 }, "end": { "local": "2004-07-28T21:28:20-05:00", "utc": "2004-07-29T02:28:20Z", "ms": 1091068099526.0812 } }, "covered_min": 0, "window_min": 76, "qualifies": false }, { "local_date": "2004-07-29", "window": { "start": { "local": "2004-07-29T20:11:18-05:00", "utc": "2004-07-30T01:11:18Z", "ms": 1091149877760.8931 }, "end": { "local": "2004-07-29T21:27:33-05:00", "utc": "2004-07-30T02:27:33Z", "ms": 1091154452556.6558 } }, "covered_min": 0, "window_min": 76, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:36 on Wed 28 Jul to 20:07 on Thu 29 Jul.", "fact": "2004-07-29T04:36:00Z → 2004-07-30T01:07:25Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 20:12–21:28 on the 28th, 20:11–21:28 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 76 minutes on the 28th and 0 of 76 on the 29th.", "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 233 s < 300 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2004: Wednesday 28 July.", "fact": "confidence: boundary (margin, 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": "2004-07-29", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-07-28", "confidence": "boundary" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2004 falls on Wednesday 28 July. Trayodaśī runs from 23:36 on Wed 28 Jul to 20:07 on Thu 29 Jul, and reaches pradoṣa on neither day. It is 3 min 53 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-07-28", "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/2004/sankashta-chaturthi?on=2004-08-03", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-08-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19230, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-08-03T04:56:21-05:00", "utc": "2004-08-03T09:56:21Z", "ms": 1091526980573.4355 }, "end": { "local": "2004-08-04T03:30:42-05:00", "utc": "2004-08-04T08:30:42Z", "ms": 1091608241749.3894 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-08-03T04:56:21-05:00", "utc": "2004-08-03T09:56:21Z", "ms": 1091526980573.4355 }, "end": { "local": "2004-08-04T03:30:42-05:00", "utc": "2004-08-04T08:30:42Z", "ms": 1091608241749.3894 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-08-02", "window": { "start": { "local": "2004-08-02T21:46:52-05:00", "utc": "2004-08-03T02:46:52Z", "ms": 1091501211967.1036 }, "end": { "local": "2004-08-02T21:46:52-05:00", "utc": "2004-08-03T02:46:52Z", "ms": 1091501211967.1036 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-08-03", "window": { "start": { "local": "2004-08-03T22:10:11-05:00", "utc": "2004-08-04T03:10:11Z", "ms": 1091589011394.1849 }, "end": { "local": "2004-08-03T22:10:11-05:00", "utc": "2004-08-04T03:10:11Z", "ms": 1091589011394.1849 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:56 on Tue 3 Aug to 03:31 on Wed 4 Aug.", "fact": "2004-08-03T09:56:21Z → 2004-08-04T08:30:42Z" }, { "step": "kaala", "text": "Moonrise is at 21:47 on the 2nd and 22:10 on the 3rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 2nd and is on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19230 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2004: Tuesday 3 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": "2004-08-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-08-03", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2004 falls on Tuesday 3 August. Caturthī runs from 04:56 on Tue 3 Aug to 03:31 on Wed 4 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/sankashta-chaturthi?on=2004-08-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/ekadashi?on=2004-08-11", "festival": "ekadashi", "name": "Kṛṣṇa Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17086, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-08-10T10:39:02-05:00", "utc": "2004-08-10T15:39:02Z", "ms": 1092152342431.7336 }, "end": { "local": "2004-08-11T13:08:56-05:00", "utc": "2004-08-11T18:08:56Z", "ms": 1092247736497.4922 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-08-10T10:39:02-05:00", "utc": "2004-08-10T15:39:02Z", "ms": 1092152342431.7336 }, "end": { "local": "2004-08-11T13:08:56-05:00", "utc": "2004-08-11T18:08:56Z", "ms": 1092247736497.4922 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-08-10", "window": { "start": { "local": "2004-08-10T05:54:17-05:00", "utc": "2004-08-10T10:54:17Z", "ms": 1092135256695.3491 }, "end": { "local": "2004-08-10T05:54:17-05:00", "utc": "2004-08-10T10:54:17Z", "ms": 1092135256695.3491 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-08-11", "window": { "start": { "local": "2004-08-11T05:55:19-05:00", "utc": "2004-08-11T10:55:19Z", "ms": 1092221718644.69 }, "end": { "local": "2004-08-11T05:55:19-05:00", "utc": "2004-08-11T10:55:19Z", "ms": 1092221718644.69 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:39 on Tue 10 Aug to 13:09 on Wed 11 Aug.", "fact": "2004-08-10T15:39:02Z → 2004-08-11T18:08:56Z" }, { "step": "kaala", "text": "Sunrise is at 05:54 on the 10th and 05:55 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 17086 s" }, { "step": "ruling", "text": "Kṛṣṇa Ekādaśī, Chicago, 2004: Wednesday 11 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": "2004-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-08-11", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Ekādaśī 2004 falls on Wednesday 11 August. Ekādaśī runs from 10:39 on Tue 10 Aug to 13:09 on Wed 11 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-08-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/pradosha-vrata?on=2004-08-12", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-08-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8505, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-08-12T15:28:57-05:00", "utc": "2004-08-12T20:28:57Z", "ms": 1092342536977.4808 }, "end": { "local": "2004-08-13T17:30:49-05:00", "utc": "2004-08-13T22:30:49Z", "ms": 1092436249106.897 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-08-12T15:28:57-05:00", "utc": "2004-08-12T20:28:57Z", "ms": 1092342536977.4808 }, "end": { "local": "2004-08-13T17:30:49-05:00", "utc": "2004-08-13T22:30:49Z", "ms": 1092436249106.897 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-08-12", "window": { "start": { "local": "2004-08-12T19:53:58-05:00", "utc": "2004-08-13T00:53:58Z", "ms": 1092358438114.7118 }, "end": { "local": "2004-08-12T21:14:25-05:00", "utc": "2004-08-13T02:14:25Z", "ms": 1092363265413.4016 } }, "covered_min": 80, "window_min": 80, "qualifies": true }, { "local_date": "2004-08-13", "window": { "start": { "local": "2004-08-13T19:52:34-05:00", "utc": "2004-08-14T00:52:34Z", "ms": 1092444754156.6975 }, "end": { "local": "2004-08-13T21:13:21-05:00", "utc": "2004-08-14T02:13:21Z", "ms": 1092449600946.0181 } }, "covered_min": 0, "window_min": 81, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:29 on Thu 12 Aug to 17:31 on Fri 13 Aug.", "fact": "2004-08-12T20:28:57Z → 2004-08-13T22:30:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:54–21:14 on the 12th, 19:53–21:13 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 80 of 80 minutes on the 12th and 0 of 81 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8505 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2004: Thursday 12 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": "2004-08-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-08-12", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2004 falls on Thursday 12 August. Trayodaśī runs from 15:29 on Thu 12 Aug to 17:31 on Fri 13 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-08-12", "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/2004/shivaratri?on=2004-08-13", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-08-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19292, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-08-13T17:30:49-05:00", "utc": "2004-08-13T22:30:49Z", "ms": 1092436249106.897 }, "end": { "local": "2004-08-14T19:09:46-05:00", "utc": "2004-08-15T00:09:46Z", "ms": 1092528585859.6755 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": true, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-08-13T17:30:49-05:00", "utc": "2004-08-13T22:30:49Z", "ms": 1092436249106.897 }, "end": { "local": "2004-08-14T19:09:46-05:00", "utc": "2004-08-15T00:09:46Z", "ms": 1092528585859.6755 } }, "kaala": "nishita", "days": [ { "local_date": "2004-08-13", "window": { "start": { "local": "2004-08-14T00:31:30-05:00", "utc": "2004-08-14T05:31:30Z", "ms": 1092461489616.6497 }, "end": { "local": "2004-08-14T01:19:30-05:00", "utc": "2004-08-14T06:19:30Z", "ms": 1092464369616.6497 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-08-14", "window": { "start": { "local": "2004-08-15T00:31:18-05:00", "utc": "2004-08-15T05:31:18Z", "ms": 1092547878212.4387 }, "end": { "local": "2004-08-15T01:19:18-05:00", "utc": "2004-08-15T06:19:18Z", "ms": 1092550758212.4387 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:31 on Fri 13 Aug to 19:10 on Sat 14 Aug.", "fact": "2004-08-13T22:30:49Z → 2004-08-15T00:09:46Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:31–01:19 on the 13th, 00:31–01:19 on the 14th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19292 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2004: Friday 13 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": "2004-08-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-08-13", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2004 falls on Friday 13 August. Caturdaśī runs from 17:31 on Fri 13 Aug to 19:10 on Sat 14 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/shivaratri?on=2004-08-13", "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/2004/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-08-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30035, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2004-08-17T21:38:45-05:00", "utc": "2004-08-18T02:38:45Z", "ms": 1092796724903.3402 }, "end": { "local": "2004-08-18T21:41:23-05:00", "utc": "2004-08-19T02:41:23Z", "ms": 1092883282715.5902 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-08-17T21:38:45-05:00", "utc": "2004-08-18T02:38:45Z", "ms": 1092796724903.3402 }, "end": { "local": "2004-08-18T21:41:23-05:00", "utc": "2004-08-19T02:41:23Z", "ms": 1092883282715.5902 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-08-17", "window": { "start": { "local": "2004-08-17T12:30:10-05:00", "utc": "2004-08-17T17:30:10Z", "ms": 1092763809683.447 }, "end": { "local": "2004-08-17T13:18:10-05:00", "utc": "2004-08-17T18:18:10Z", "ms": 1092766689683.447 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-08-18", "window": { "start": { "local": "2004-08-18T12:29:56-05:00", "utc": "2004-08-18T17:29:56Z", "ms": 1092850196208.8401 }, "end": { "local": "2004-08-18T13:17:56-05:00", "utc": "2004-08-18T18:17:56Z", "ms": 1092853076208.8401 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 21:39 on Tue 17 Aug to 21:41 on Wed 18 Aug.", "fact": "2004-08-18T02:38:45Z → 2004-08-19T02:41:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 17th, 12:30–13:18 on the 18th.", "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 17th and 48 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 30035 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Chicago, 2004: Wednesday 18 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": "2004-08-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-08-18", "confidence": "determinate" } ], "quote": "In Chicago, Madhusravā Tṛtīyā (Hariyali Teej) 2004 falls on Wednesday 18 August. Tṛtīyā runs from 21:39 on Tue 17 Aug to 21:41 on Wed 18 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/vinayaka-chaturthi?on=2004-08-19", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-08-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29036, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-08-18T21:41:23-05:00", "utc": "2004-08-19T02:41:23Z", "ms": 1092883282715.5902 }, "end": { "local": "2004-08-19T21:21:38-05:00", "utc": "2004-08-20T02:21:38Z", "ms": 1092968498204.9613 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-08-18T21:41:23-05:00", "utc": "2004-08-19T02:41:23Z", "ms": 1092883282715.5902 }, "end": { "local": "2004-08-19T21:21:38-05:00", "utc": "2004-08-20T02:21:38Z", "ms": 1092968498204.9613 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-08-18", "window": { "start": { "local": "2004-08-18T12:29:56-05:00", "utc": "2004-08-18T17:29:56Z", "ms": 1092850196208.8401 }, "end": { "local": "2004-08-18T13:17:56-05:00", "utc": "2004-08-18T18:17:56Z", "ms": 1092853076208.8401 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-08-19", "window": { "start": { "local": "2004-08-19T12:29:42-05:00", "utc": "2004-08-19T17:29:42Z", "ms": 1092936582241.5702 }, "end": { "local": "2004-08-19T13:17:42-05:00", "utc": "2004-08-19T18:17:42Z", "ms": 1092939462241.5702 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:41 on Wed 18 Aug to 21:22 on Thu 19 Aug.", "fact": "2004-08-19T02:41:23Z → 2004-08-20T02:21:38Z" }, { "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": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29036 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2004: Thursday 19 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": "2004-08-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-08-19", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2004 falls on Thursday 19 August. Caturthī runs from 21:41 on Wed 18 Aug to 21:22 on Thu 19 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/vinayaka-chaturthi?on=2004-08-19", "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/2004/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-08-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26515, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2004-08-19T21:21:38-05:00", "utc": "2004-08-20T02:21:38Z", "ms": 1092968498204.9613 }, "end": { "local": "2004-08-20T20:39:23-05:00", "utc": "2004-08-21T01:39:23Z", "ms": 1093052363130.4814 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-08-19T21:21:38-05:00", "utc": "2004-08-20T02:21:38Z", "ms": 1092968498204.9613 }, "end": { "local": "2004-08-20T20:39:23-05:00", "utc": "2004-08-21T01:39:23Z", "ms": 1093052363130.4814 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-08-19", "window": { "start": { "local": "2004-08-19T12:29:42-05:00", "utc": "2004-08-19T17:29:42Z", "ms": 1092936582241.5702 }, "end": { "local": "2004-08-19T13:17:42-05:00", "utc": "2004-08-19T18:17:42Z", "ms": 1092939462241.5702 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-08-20", "window": { "start": { "local": "2004-08-20T12:29:28-05:00", "utc": "2004-08-20T17:29:28Z", "ms": 1093022967790.4424 }, "end": { "local": "2004-08-20T13:17:28-05:00", "utc": "2004-08-20T18:17:28Z", "ms": 1093025847790.4424 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 21:22 on Thu 19 Aug to 20:39 on Fri 20 Aug.", "fact": "2004-08-20T02:21:38Z → 2004-08-21T01:39:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 19th, 12:29–13:17 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26515 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Chicago, 2004: Friday 20 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": "2004-08-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-08-20", "confidence": "determinate" } ], "quote": "In Chicago, Nāga Pañcamī 2004 falls on Friday 20 August. Pañcamī runs from 21:22 on Thu 19 Aug to 20:39 on Fri 20 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-08-26", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-08-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8732, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-08-25T11:24:36-05:00", "utc": "2004-08-25T16:24:36Z", "ms": 1093451075588.4006 }, "end": { "local": "2004-08-26T08:36:23-05:00", "utc": "2004-08-26T13:36:23Z", "ms": 1093527383295.639 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-08-25T11:24:36-05:00", "utc": "2004-08-25T16:24:36Z", "ms": 1093451075588.4006 }, "end": { "local": "2004-08-26T08:36:23-05:00", "utc": "2004-08-26T13:36:23Z", "ms": 1093527383295.639 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-08-25", "window": { "start": { "local": "2004-08-25T06:09:50-05:00", "utc": "2004-08-25T11:09:50Z", "ms": 1093432189733.2749 }, "end": { "local": "2004-08-25T06:09:50-05:00", "utc": "2004-08-25T11:09:50Z", "ms": 1093432189733.2749 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-08-26", "window": { "start": { "local": "2004-08-26T06:10:52-05:00", "utc": "2004-08-26T11:10:52Z", "ms": 1093518651710.5465 }, "end": { "local": "2004-08-26T06:10:52-05:00", "utc": "2004-08-26T11:10:52Z", "ms": 1093518651710.5465 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:25 on Wed 25 Aug to 08:36 on Thu 26 Aug.", "fact": "2004-08-25T16:24:36Z → 2004-08-26T13:36:23Z" }, { "step": "kaala", "text": "Sunrise is at 06:10 on the 25th and 06:11 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 8732 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Chicago, 2004: Thursday 26 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": "2004-08-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-08-26", "confidence": "determinate" } ], "quote": "In Chicago, Putradā Ekādaśī 2004 falls on Thursday 26 August. Ekādaśī runs from 11:25 on Wed 25 Aug to 08:36 on Thu 26 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-08-26", "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/2004/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-08-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13888, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2004-08-26T08:36:23-05:00", "utc": "2004-08-26T13:36:23Z", "ms": 1093527383295.639 }, "end": { "local": "2004-08-27T05:39:56-05:00", "utc": "2004-08-27T10:39:56Z", "ms": 1093603196434.706 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-08-26T08:36:23-05:00", "utc": "2004-08-26T13:36:23Z", "ms": 1093527383295.639 }, "end": { "local": "2004-08-27T05:39:56-05:00", "utc": "2004-08-27T10:39:56Z", "ms": 1093603196434.706 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-08-26", "window": { "start": { "local": "2004-08-26T12:27:52-05:00", "utc": "2004-08-26T17:27:52Z", "ms": 1093541271556.2874 }, "end": { "local": "2004-08-26T13:15:52-05:00", "utc": "2004-08-26T18:15:52Z", "ms": 1093544151556.2874 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-08-27", "window": { "start": { "local": "2004-08-27T12:27:34-05:00", "utc": "2004-08-27T17:27:34Z", "ms": 1093627654061.9642 }, "end": { "local": "2004-08-27T13:15:34-05:00", "utc": "2004-08-27T18:15:34Z", "ms": 1093630534061.9642 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 08:36 on Thu 26 Aug to 05:40 on Fri 27 Aug.", "fact": "2004-08-26T13:36:23Z → 2004-08-27T10:39:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:28–13:16 on the 26th, 12:28–13:16 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 26th and 0 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 13888 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Chicago, 2004: Thursday 26 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": "2004-08-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-08-26", "confidence": "determinate" } ], "quote": "In Chicago, Dāmodara Dvādaśī 2004 falls on Thursday 26 August. Dvādaśī runs from 08:36 on Thu 26 Aug to 05:40 on Fri 27 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/pradosha-vrata?on=2004-08-27", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20767, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-08-27T05:39:56-05:00", "utc": "2004-08-27T10:39:56Z", "ms": 1093603196434.706 }, "end": { "local": "2004-08-28T02:42:55-05:00", "utc": "2004-08-28T07:42:55Z", "ms": 1093678974699.247 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-08-27T05:39:56-05:00", "utc": "2004-08-27T10:39:56Z", "ms": 1093603196434.706 }, "end": { "local": "2004-08-28T02:42:55-05:00", "utc": "2004-08-28T07:42:55Z", "ms": 1093678974699.247 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-08-26", "window": { "start": { "local": "2004-08-26T19:32:51-05:00", "utc": "2004-08-27T00:32:51Z", "ms": 1093566771402.0283 }, "end": { "local": "2004-08-26T20:58:04-05:00", "utc": "2004-08-27T01:58:04Z", "ms": 1093571883698.2778 } }, "covered_min": 0, "window_min": 85, "qualifies": false }, { "local_date": "2004-08-27", "window": { "start": { "local": "2004-08-27T19:31:15-05:00", "utc": "2004-08-28T00:31:15Z", "ms": 1093653074500.0286 }, "end": { "local": "2004-08-27T20:56:48-05:00", "utc": "2004-08-28T01:56:48Z", "ms": 1093658207963.6083 } }, "covered_min": 86, "window_min": 86, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:40 on Fri 27 Aug to 02:43 on Sat 28 Aug.", "fact": "2004-08-27T10:39:56Z → 2004-08-28T07:42:55Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:33–20:58 on the 26th, 19:31–20:57 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 85 minutes on the 26th and 86 of 86 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20767 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2004: Friday 27 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": "2004-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-08-27", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2004 falls on Friday 27 August. Trayodaśī runs from 05:40 on Fri 27 Aug to 02:43 on Sat 28 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-08-27", "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/2004/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15685, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-08-28T23:53:58-05:00", "utc": "2004-08-29T04:53:58Z", "ms": 1093755237543.5614 }, "end": { "local": "2004-08-29T21:22:16-05:00", "utc": "2004-08-30T02:22:16Z", "ms": 1093832536001.435 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "2004-08-29T10:35:23-05:00", "utc": "2004-08-29T15:35:23Z", "ms": 1093793722534.1913 }, "end": { "local": "2004-08-29T21:22:16-05:00", "utc": "2004-08-30T02:22:16Z", "ms": 1093832536001.435 } }, "kaala": "day", "days": [ { "local_date": "2004-08-28", "window": { "start": { "local": "2004-08-28T06:12:55-05:00", "utc": "2004-08-28T11:12:55Z", "ms": 1093691575476.876 }, "end": { "local": "2004-08-29T06:13:57-05:00", "utc": "2004-08-29T11:13:57Z", "ms": 1093778037275.3995 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "2004-08-29", "window": { "start": { "local": "2004-08-29T06:13:57-05:00", "utc": "2004-08-29T11:13:57Z", "ms": 1093778037275.3995 }, "end": { "local": "2004-08-30T06:14:59-05:00", "utc": "2004-08-30T11:14:59Z", "ms": 1093864499027.24 } }, "covered_min": 647, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:54 on Sat 28 Aug to 21:22 on Sun 29 Aug. Its second half begins at 10:35 on Sun 29 Aug.", "fact": "2004-08-29T04:53:58Z → 2004-08-30T02:22:16Z · second half from 2004-08-29T15:35:23Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:13 on the 28th, and from 06:14 on the 29th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The second half of Pūrṇimā must be present during the day. It covers 0 of 1441 minutes on the 28th and 647 of 1441 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one day qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15685 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Chicago, 2004: Sunday 29 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "raksha-bandhana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "day", "priority": "unstated", "when_absent": "unstated", "half": "second" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-08-29", "confidence": "determinate" } ], "quote": "In Chicago, Rakṣā Bandhana (Rakhi) 2004 falls on Sunday 29 August. The second half of Pūrṇimā runs from 10:35 on Sun 29 Aug to 21:22 on Sun 29 Aug and lies within that day, sunrise to sunrise.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29238, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-08-28T23:53:58-05:00", "utc": "2004-08-29T04:53:58Z", "ms": 1093755237543.5614 }, "end": { "local": "2004-08-29T21:22:16-05:00", "utc": "2004-08-30T02:22:16Z", "ms": 1093832536001.435 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2004-08-28T23:53:58-05:00", "utc": "2004-08-29T04:53:58Z", "ms": 1093755237543.5614 }, "end": { "local": "2004-08-29T21:22:16-05:00", "utc": "2004-08-30T02:22:16Z", "ms": 1093832536001.435 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-08-28", "window": { "start": { "local": "2004-08-28T12:27:16-05:00", "utc": "2004-08-28T17:27:16Z", "ms": 1093714036197.5884 }, "end": { "local": "2004-08-28T13:15:16-05:00", "utc": "2004-08-28T18:15:16Z", "ms": 1093716916197.5884 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-08-29", "window": { "start": { "local": "2004-08-29T12:26:58-05:00", "utc": "2004-08-29T17:26:58Z", "ms": 1093800417982.8425 }, "end": { "local": "2004-08-29T13:14:58-05:00", "utc": "2004-08-29T18:14:58Z", "ms": 1093803297982.8425 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:54 on Sat 28 Aug to 21:22 on Sun 29 Aug.", "fact": "2004-08-29T04:53:58Z → 2004-08-30T02:22:16Z" }, { "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": "Pūrṇimā 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: unstated → only-day · margin 29238 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Chicago, 2004: Sunday 29 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-08-29", "confidence": "determinate" } ], "quote": "In Chicago, Ṛṣi Tarpaṇa 2004 falls on Sunday 29 August. Pūrṇimā runs from 23:54 on Sat 28 Aug to 21:22 on Sun 29 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-08-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3211, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2004-08-30T19:16:58-05:00", "utc": "2004-08-31T00:16:58Z", "ms": 1093911418465.0414 }, "end": { "local": "2004-08-31T17:46:28-05:00", "utc": "2004-08-31T22:46:28Z", "ms": 1093992388441.3832 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-08-30T19:16:58-05:00", "utc": "2004-08-31T00:16:58Z", "ms": 1093911418465.0414 }, "end": { "local": "2004-08-31T17:46:28-05:00", "utc": "2004-08-31T22:46:28Z", "ms": 1093992388441.3832 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-08-30", "window": { "start": { "local": "2004-08-30T20:10:30-05:00", "utc": "2004-08-31T01:10:30Z", "ms": 1093914629605.123 }, "end": { "local": "2004-08-30T20:10:30-05:00", "utc": "2004-08-31T01:10:30Z", "ms": 1093914629605.123 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-08-31", "window": { "start": { "local": "2004-08-31T20:32:46-05:00", "utc": "2004-09-01T01:32:46Z", "ms": 1094002366039.6871 }, "end": { "local": "2004-08-31T20:32:46-05:00", "utc": "2004-09-01T01:32:46Z", "ms": 1094002366039.6871 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 19:17 on Mon 30 Aug to 17:46 on Tue 31 Aug.", "fact": "2004-08-31T00:16:58Z → 2004-08-31T22:46:28Z" }, { "step": "kaala", "text": "Moonrise is at 20:10 on the 30th and 20:33 on the 31st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 30th and is not on the 31st.", "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 3211 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Chicago, 2004: Monday 30 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": "2004-08-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-08-30", "confidence": "determinate" } ], "quote": "In Chicago, Aśūnya Śayana Vrata 2004 falls on Monday 30 August. Dvitīyā runs from 19:17 on Mon 30 Aug to 17:46 on Tue 31 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13411, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2004-08-31T17:46:28-05:00", "utc": "2004-08-31T22:46:28Z", "ms": 1093992388441.3832 }, "end": { "local": "2004-09-01T16:57:33-05:00", "utc": "2004-09-01T21:57:33Z", "ms": 1094075852573.3812 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-08-31T17:46:28-05:00", "utc": "2004-08-31T22:46:28Z", "ms": 1093992388441.3832 }, "end": { "local": "2004-09-01T16:57:33-05:00", "utc": "2004-09-01T21:57:33Z", "ms": 1094075852573.3812 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-08-31", "window": { "start": { "local": "2004-08-31T12:26:21-05:00", "utc": "2004-08-31T17:26:21Z", "ms": 1093973180583.8948 }, "end": { "local": "2004-08-31T13:14:21-05:00", "utc": "2004-08-31T18:14:21Z", "ms": 1093976060583.8948 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-09-01", "window": { "start": { "local": "2004-09-01T12:26:01-05:00", "utc": "2004-09-01T17:26:01Z", "ms": 1094059561440.9944 }, "end": { "local": "2004-09-01T13:14:01-05:00", "utc": "2004-09-01T18:14:01Z", "ms": 1094062441440.9944 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 17:46 on Tue 31 Aug to 16:58 on Wed 1 Sep.", "fact": "2004-08-31T22:46:28Z → 2004-09-01T21:57:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:26–13:14 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": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 13411 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Chicago, 2004: Wednesday 1 September.", "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": "2004-09-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-01", "confidence": "determinate" } ], "quote": "In Chicago, Kajjalī Tṛtīyā (Kajari Teej) 2004 falls on Wednesday 1 September. Tṛtīyā runs from 17:46 on Tue 31 Aug to 16:58 on Wed 1 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 579, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-09-01T16:57:33-05:00", "utc": "2004-09-01T21:57:33Z", "ms": 1094075852573.3812 }, "end": { "local": "2004-09-02T16:54:20-05:00", "utc": "2004-09-02T21:54:20Z", "ms": 1094162060192.7072 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-01T16:57:33-05:00", "utc": "2004-09-01T21:57:33Z", "ms": 1094075852573.3812 }, "end": { "local": "2004-09-02T16:54:20-05:00", "utc": "2004-09-02T21:54:20Z", "ms": 1094162060192.7072 } }, "kaala": "sayahna", "days": [ { "local_date": "2004-09-01", "window": { "start": { "local": "2004-09-01T16:45:49-05:00", "utc": "2004-09-01T21:45:49Z", "ms": 1094075148849.5992 }, "end": { "local": "2004-09-01T19:23:00-05:00", "utc": "2004-09-02T00:23:00Z", "ms": 1094084580455.3358 } }, "covered_min": 145, "window_min": 157, "qualifies": true }, { "local_date": "2004-09-02", "window": { "start": { "local": "2004-09-02T16:44:41-05:00", "utc": "2004-09-02T21:44:41Z", "ms": 1094161480791.913 }, "end": { "local": "2004-09-02T19:21:20-05:00", "utc": "2004-09-03T00:21:20Z", "ms": 1094170879966.8132 } }, "covered_min": 10, "window_min": 157, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:58 on Wed 1 Sep to 16:54 on Thu 2 Sep.", "fact": "2004-09-01T21:57:33Z → 2004-09-02T21:54:20Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:46–19:23 on the 1st, 16:45–19:21 on the 2nd.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 145 of 157 minutes on the 1st and 10 of 157 on the 2nd.", "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 579 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Chicago, 2004: Wednesday 1 September.", "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": "2004-09-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-01", "confidence": "determinate" } ], "quote": "In Chicago, Bahulā Caturthī 2004 falls on Wednesday 1 September. Caturthī runs from 16:58 on Wed 1 Sep to 16:54 on Thu 2 Sep and covers 145 of 157 minutes of sāyāhna that late afternoon. It also reaches the next late afternoon for 10 minutes; by the rule the first late afternoon is taken.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/sankashta-chaturthi?on=2004-09-01", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14199, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-09-01T16:57:33-05:00", "utc": "2004-09-01T21:57:33Z", "ms": 1094075852573.3812 }, "end": { "local": "2004-09-02T16:54:20-05:00", "utc": "2004-09-02T21:54:20Z", "ms": 1094162060192.7072 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-01T16:57:33-05:00", "utc": "2004-09-01T21:57:33Z", "ms": 1094075852573.3812 }, "end": { "local": "2004-09-02T16:54:20-05:00", "utc": "2004-09-02T21:54:20Z", "ms": 1094162060192.7072 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-09-01", "window": { "start": { "local": "2004-09-01T20:54:11-05:00", "utc": "2004-09-02T01:54:11Z", "ms": 1094090051220.1538 }, "end": { "local": "2004-09-01T20:54:11-05:00", "utc": "2004-09-02T01:54:11Z", "ms": 1094090051220.1538 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-09-02", "window": { "start": { "local": "2004-09-02T21:16:08-05:00", "utc": "2004-09-03T02:16:08Z", "ms": 1094177768302.984 }, "end": { "local": "2004-09-02T21:16:08-05:00", "utc": "2004-09-03T02:16:08Z", "ms": 1094177768302.984 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:58 on Wed 1 Sep to 16:54 on Thu 2 Sep.", "fact": "2004-09-01T21:57:33Z → 2004-09-02T21:54:20Z" }, { "step": "kaala", "text": "Moonrise is at 20:54 on the 1st and 21:16 on the 2nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 1st and is not on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14199 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2004: Wednesday 1 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": "2004-09-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-01", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2004 falls on Wednesday 1 September. Caturthī runs from 16:58 on Wed 1 Sep to 16:54 on Thu 2 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/sankashta-chaturthi?on=2004-09-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15840, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2004-09-03T17:37:22-05:00", "utc": "2004-09-03T22:37:22Z", "ms": 1094251041960.3629 }, "end": { "local": "2004-09-04T19:02:44-05:00", "utc": "2004-09-05T00:02:44Z", "ms": 1094342563630.2329 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-03T17:37:22-05:00", "utc": "2004-09-03T22:37:22Z", "ms": 1094251041960.3629 }, "end": { "local": "2004-09-04T19:02:44-05:00", "utc": "2004-09-05T00:02:44Z", "ms": 1094342563630.2329 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-09-03", "window": { "start": { "local": "2004-09-03T12:25:22-05:00", "utc": "2004-09-03T17:25:22Z", "ms": 1094232322369.3342 }, "end": { "local": "2004-09-03T13:13:22-05:00", "utc": "2004-09-03T18:13:22Z", "ms": 1094235202369.3342 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-09-04", "window": { "start": { "local": "2004-09-04T12:25:02-05:00", "utc": "2004-09-04T17:25:02Z", "ms": 1094318702479.5566 }, "end": { "local": "2004-09-04T13:13:02-05:00", "utc": "2004-09-04T18:13:02Z", "ms": 1094321582479.5566 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 17:37 on Fri 3 Sep to 19:03 on Sat 4 Sep.", "fact": "2004-09-03T22:37:22Z → 2004-09-05T00:02:44Z" }, { "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": "Ṣaṣṭhī 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: paraviddha → only-day · margin 15840 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Chicago, 2004: Saturday 4 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "hala-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Hala sasthi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-04", "confidence": "determinate" } ], "quote": "In Chicago, Hala Ṣaṣṭhī 2004 falls on Saturday 4 September. Ṣaṣṭhī runs from 17:37 on Fri 3 Sep to 19:03 on Sat 4 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3725, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2004-09-05T21:01:57-05:00", "utc": "2004-09-06T02:01:57Z", "ms": 1094436117116.7688 }, "end": { "local": "2004-09-06T23:22:47-05:00", "utc": "2004-09-07T04:22:47Z", "ms": 1094530967441.4602 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-05T21:01:57-05:00", "utc": "2004-09-06T02:01:57Z", "ms": 1094436117116.7688 }, "end": { "local": "2004-09-06T23:22:47-05:00", "utc": "2004-09-07T04:22:47Z", "ms": 1094530967441.4602 } }, "kaala": "nishita", "days": [ { "local_date": "2004-09-05", "window": { "start": { "local": "2004-09-06T00:25:13-05:00", "utc": "2004-09-06T05:25:13Z", "ms": 1094448313210.3761 }, "end": { "local": "2004-09-06T01:13:13-05:00", "utc": "2004-09-06T06:13:13Z", "ms": 1094451193210.3761 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-09-06", "window": { "start": { "local": "2004-09-07T00:24:53-05:00", "utc": "2004-09-07T05:24:53Z", "ms": 1094534692925.4216 }, "end": { "local": "2004-09-07T01:12:53-05:00", "utc": "2004-09-07T06:12:53Z", "ms": 1094537572925.4216 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 21:02 on Sun 5 Sep to 23:23 on Mon 6 Sep.", "fact": "2004-09-06T02:01:57Z → 2004-09-07T04:22:47Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:25–01:13 on the 5th, 00:25–01:13 on the 6th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during niśītha. It covers 48 of 48 minutes on the 5th and 0 of 48 on the 6th.", "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 3725 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Chicago, 2004: Sunday 5 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "janmashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami." } ], "not_evaluated": "The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.", "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-09-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-05", "confidence": "determinate" } ], "quote": "In Chicago, Janmāṣṭamī 2004 falls on Sunday 5 September. Aṣṭamī runs from 21:02 on Sun 5 Sep to 23:23 on Mon 6 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20981, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "2004-09-04T19:02:44-05:00", "utc": "2004-09-05T00:02:44Z", "ms": 1094342563630.2329 }, "end": { "local": "2004-09-05T21:01:57-05:00", "utc": "2004-09-06T02:01:57Z", "ms": 1094436117116.7688 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-04T19:02:44-05:00", "utc": "2004-09-05T00:02:44Z", "ms": 1094342563630.2329 }, "end": { "local": "2004-09-05T21:01:57-05:00", "utc": "2004-09-06T02:01:57Z", "ms": 1094436117116.7688 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-09-04", "window": { "start": { "local": "2004-09-04T12:25:02-05:00", "utc": "2004-09-04T17:25:02Z", "ms": 1094318702479.5566 }, "end": { "local": "2004-09-04T13:13:02-05:00", "utc": "2004-09-04T18:13:02Z", "ms": 1094321582479.5566 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-09-05", "window": { "start": { "local": "2004-09-05T12:24:42-05:00", "utc": "2004-09-05T17:24:42Z", "ms": 1094405082379.0099 }, "end": { "local": "2004-09-05T13:12:42-05:00", "utc": "2004-09-05T18:12:42Z", "ms": 1094407962379.0099 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 19:03 on Sat 4 Sep to 21:02 on Sun 5 Sep.", "fact": "2004-09-05T00:02:44Z → 2004-09-06T02:01:57Z" }, { "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": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 20981 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Chicago, 2004: Sunday 5 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitala-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 7 Sitala saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-09-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-05", "confidence": "determinate" } ], "quote": "In Chicago, Śītalā Saptamī 2004 falls on Sunday 5 September. Saptamī runs from 19:03 on Sat 4 Sep to 21:02 on Sun 5 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-09-09", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 680, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-09-09T04:12:16-05:00", "utc": "2004-09-09T09:12:16Z", "ms": 1094721136443.2334 }, "end": { "local": "2004-09-10T06:14:57-05:00", "utc": "2004-09-10T11:14:57Z", "ms": 1094814897334.7201 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-09T04:12:16-05:00", "utc": "2004-09-09T09:12:16Z", "ms": 1094721136443.2334 }, "end": { "local": "2004-09-10T06:14:57-05:00", "utc": "2004-09-10T11:14:57Z", "ms": 1094814897334.7201 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-09-09", "window": { "start": { "local": "2004-09-09T06:25:16-05:00", "utc": "2004-09-09T11:25:16Z", "ms": 1094729115820.4535 }, "end": { "local": "2004-09-09T06:25:16-05:00", "utc": "2004-09-09T11:25:16Z", "ms": 1094729115820.4535 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-09-10", "window": { "start": { "local": "2004-09-10T06:26:18-05:00", "utc": "2004-09-10T11:26:18Z", "ms": 1094815577583.015 }, "end": { "local": "2004-09-10T06:26:18-05:00", "utc": "2004-09-10T11:26:18Z", "ms": 1094815577583.015 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:12 on Thu 9 Sep to 06:15 on Fri 10 Sep.", "fact": "2004-09-09T09:12:16Z → 2004-09-10T11:14:57Z" }, { "step": "kaala", "text": "Sunrise is at 06:25 on the 9th and 06:26 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 9th and is not on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 680 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Chicago, 2004: Thursday 9 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": "2004-09-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-09", "confidence": "determinate" } ], "quote": "In Chicago, Ajā Ekādaśī 2004 falls on Thursday 9 September. Ekādaśī runs from 04:12 on Thu 9 Sep to 06:15 on Fri 10 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-09-09", "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/2004/pradosha-vrata?on=2004-09-11", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36542, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-09-11T07:50:43-05:00", "utc": "2004-09-11T12:50:43Z", "ms": 1094907042729.2682 }, "end": { "local": "2004-09-12T08:55:11-05:00", "utc": "2004-09-12T13:55:11Z", "ms": 1094997310879.1123 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-11T07:50:43-05:00", "utc": "2004-09-11T12:50:43Z", "ms": 1094907042729.2682 }, "end": { "local": "2004-09-12T08:55:11-05:00", "utc": "2004-09-12T13:55:11Z", "ms": 1094997310879.1123 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-09-11", "window": { "start": { "local": "2004-09-11T19:05:57-05:00", "utc": "2004-09-12T00:05:57Z", "ms": 1094947557337.2781 }, "end": { "local": "2004-09-11T20:36:57-05:00", "utc": "2004-09-12T01:36:57Z", "ms": 1094953016523.2593 } }, "covered_min": 91, "window_min": 91, "qualifies": true }, { "local_date": "2004-09-12", "window": { "start": { "local": "2004-09-12T19:04:13-05:00", "utc": "2004-09-13T00:04:13Z", "ms": 1095033853339.5131 }, "end": { "local": "2004-09-12T20:35:35-05:00", "utc": "2004-09-13T01:35:35Z", "ms": 1095039334644.84 } }, "covered_min": 0, "window_min": 91, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:51 on Sat 11 Sep to 08:55 on Sun 12 Sep.", "fact": "2004-09-11T12:50:43Z → 2004-09-12T13:55:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:06–20:37 on the 11th, 19:04–20:36 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 91 of 91 minutes on the 11th and 0 of 91 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36542 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2004: Saturday 11 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": "2004-09-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-11", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2004 falls on Saturday 11 September. Trayodaśī runs from 07:51 on Sat 11 Sep to 08:55 on Sun 12 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-09-11", "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/2004/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34503, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-09-12T08:55:11-05:00", "utc": "2004-09-12T13:55:11Z", "ms": 1094997310879.1123 }, "end": { "local": "2004-09-13T09:27:26-05:00", "utc": "2004-09-13T14:27:26Z", "ms": 1095085645932.7986 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-12T08:55:11-05:00", "utc": "2004-09-12T13:55:11Z", "ms": 1094997310879.1123 }, "end": { "local": "2004-09-13T09:27:26-05:00", "utc": "2004-09-13T14:27:26Z", "ms": 1095085645932.7986 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-09-12", "window": { "start": { "local": "2004-09-12T19:04:13-05:00", "utc": "2004-09-13T00:04:13Z", "ms": 1095033853339.5131 }, "end": { "local": "2004-09-12T20:35:35-05:00", "utc": "2004-09-13T01:35:35Z", "ms": 1095039334644.84 } }, "covered_min": 91, "window_min": 91, "qualifies": true }, { "local_date": "2004-09-13", "window": { "start": { "local": "2004-09-13T19:02:29-05:00", "utc": "2004-09-14T00:02:29Z", "ms": 1095120149149.8972 }, "end": { "local": "2004-09-13T20:34:13-05:00", "utc": "2004-09-14T01:34:13Z", "ms": 1095125652607.5457 } }, "covered_min": 0, "window_min": 92, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:55 on Sun 12 Sep to 09:27 on Mon 13 Sep.", "fact": "2004-09-12T13:55:11Z → 2004-09-13T14:27:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:04–20:36 on the 12th, 19:02–20:34 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 91 of 91 minutes on the 12th and 0 of 92 on the 13th.", "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 34503 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Chicago, 2004: Sunday 12 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aghora-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Aghora caturdasi (pradosa vyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-12", "confidence": "determinate" } ], "quote": "In Chicago, Aghora Caturdaśī 2004 falls on Sunday 12 September. Caturdaśī runs from 08:55 on Sun 12 Sep to 09:27 on Mon 13 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/shivaratri?on=2004-09-12", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27842, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-09-12T08:55:11-05:00", "utc": "2004-09-12T13:55:11Z", "ms": 1094997310879.1123 }, "end": { "local": "2004-09-13T09:27:26-05:00", "utc": "2004-09-13T14:27:26Z", "ms": 1095085645932.7986 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-12T08:55:11-05:00", "utc": "2004-09-12T13:55:11Z", "ms": 1094997310879.1123 }, "end": { "local": "2004-09-13T09:27:26-05:00", "utc": "2004-09-13T14:27:26Z", "ms": 1095085645932.7986 } }, "kaala": "nishita", "days": [ { "local_date": "2004-09-11", "window": { "start": { "local": "2004-09-12T00:23:09-05:00", "utc": "2004-09-12T05:23:09Z", "ms": 1094966589284.7075 }, "end": { "local": "2004-09-12T01:11:09-05:00", "utc": "2004-09-12T06:11:09Z", "ms": 1094969469284.7075 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-09-12", "window": { "start": { "local": "2004-09-13T00:22:48-05:00", "utc": "2004-09-13T05:22:48Z", "ms": 1095052968234.4888 }, "end": { "local": "2004-09-13T01:10:48-05:00", "utc": "2004-09-13T06:10:48Z", "ms": 1095055848234.4888 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:55 on Sun 12 Sep to 09:27 on Mon 13 Sep.", "fact": "2004-09-12T13:55:11Z → 2004-09-13T14:27:26Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:23–01:11 on the 11th, 00:23–01:11 on the 12th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27842 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2004: Sunday 12 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": "2004-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-12", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2004 falls on Sunday 12 September. Caturdaśī runs from 08:55 on Sun 12 Sep to 09:27 on Mon 13 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/shivaratri?on=2004-09-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10352, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2004-09-14T09:29:03-05:00", "utc": "2004-09-14T14:29:03Z", "ms": 1095172142996.597 }, "end": { "local": "2004-09-15T09:03:07-05:00", "utc": "2004-09-15T14:03:07Z", "ms": 1095256987240.7566 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-14T09:29:03-05:00", "utc": "2004-09-14T14:29:03Z", "ms": 1095172142996.597 }, "end": { "local": "2004-09-15T09:03:07-05:00", "utc": "2004-09-15T14:03:07Z", "ms": 1095256987240.7566 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-09-14", "window": { "start": { "local": "2004-09-14T12:21:35-05:00", "utc": "2004-09-14T17:21:35Z", "ms": 1095182494939.1434 }, "end": { "local": "2004-09-14T13:09:35-05:00", "utc": "2004-09-14T18:09:35Z", "ms": 1095185374939.1434 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-09-15", "window": { "start": { "local": "2004-09-15T12:21:14-05:00", "utc": "2004-09-15T17:21:14Z", "ms": 1095268873700.4138 }, "end": { "local": "2004-09-15T13:09:14-05:00", "utc": "2004-09-15T18:09:14Z", "ms": 1095271753700.4138 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 09:29 on Tue 14 Sep to 09:03 on Wed 15 Sep.", "fact": "2004-09-14T14:29:03Z → 2004-09-15T14:03:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:22–13:10 on the 14th, 12:21–13:09 on the 15th.", "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 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 10352 s" }, { "step": "ruling", "text": "Rudra Vrata, Chicago, 2004: Tuesday 14 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rudra-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Rudra vrata (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-09-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-14", "confidence": "determinate" } ], "quote": "In Chicago, Rudra Vrata 2004 falls on Tuesday 14 September. Pratipadā runs from 09:29 on Tue 14 Sep to 09:03 on Wed 15 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14852, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2004-09-16T08:13:21-05:00", "utc": "2004-09-16T13:13:21Z", "ms": 1095340400515.9678 }, "end": { "local": "2004-09-17T07:03:22-05:00", "utc": "2004-09-17T12:03:22Z", "ms": 1095422602061.2795 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-16T08:13:21-05:00", "utc": "2004-09-16T13:13:21Z", "ms": 1095340400515.9678 }, "end": { "local": "2004-09-17T07:03:22-05:00", "utc": "2004-09-17T12:03:22Z", "ms": 1095422602061.2795 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-09-16", "window": { "start": { "local": "2004-09-16T12:20:52-05:00", "utc": "2004-09-16T17:20:52Z", "ms": 1095355252439.8983 }, "end": { "local": "2004-09-16T13:08:52-05:00", "utc": "2004-09-16T18:08:52Z", "ms": 1095358132439.8983 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-09-17", "window": { "start": { "local": "2004-09-17T12:20:31-05:00", "utc": "2004-09-17T17:20:31Z", "ms": 1095441631173.1871 }, "end": { "local": "2004-09-17T13:08:31-05:00", "utc": "2004-09-17T18:08:31Z", "ms": 1095444511173.1871 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 08:13 on Thu 16 Sep to 07:03 on Fri 17 Sep.", "fact": "2004-09-16T13:13:21Z → 2004-09-17T12:03:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:21–13:09 on the 16th, 12:21–13:09 on the 17th.", "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 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 14852 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Chicago, 2004: Thursday 16 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "haritalika-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Haritalika vrata (paraviddha), Gauri vrata (Orissa), Gauri (Mysore)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-09-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-16", "confidence": "determinate" } ], "quote": "In Chicago, Haritālikā Vrata (Hartalika Teej) 2004 falls on Thursday 16 September. Tṛtīyā runs from 08:13 on Thu 16 Sep to 07:03 on Fri 17 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19029, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-09-17T07:03:22-05:00", "utc": "2004-09-17T12:03:22Z", "ms": 1095422602061.2795 }, "end": { "local": "2004-09-18T05:36:25-05:00", "utc": "2004-09-18T10:36:25Z", "ms": 1095503785338.8931 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-17T07:03:22-05:00", "utc": "2004-09-17T12:03:22Z", "ms": 1095422602061.2795 }, "end": { "local": "2004-09-18T05:36:25-05:00", "utc": "2004-09-18T10:36:25Z", "ms": 1095503785338.8931 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-09-17", "window": { "start": { "local": "2004-09-17T12:20:31-05:00", "utc": "2004-09-17T17:20:31Z", "ms": 1095441631173.1871 }, "end": { "local": "2004-09-17T13:08:31-05:00", "utc": "2004-09-17T18:08:31Z", "ms": 1095444511173.1871 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-09-18", "window": { "start": { "local": "2004-09-18T12:20:10-05:00", "utc": "2004-09-18T17:20:10Z", "ms": 1095528009917.7372 }, "end": { "local": "2004-09-18T13:08:10-05:00", "utc": "2004-09-18T18:08:10Z", "ms": 1095530889917.7372 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:03 on Fri 17 Sep to 05:36 on Sat 18 Sep.", "fact": "2004-09-17T12:03:22Z → 2004-09-18T10:36:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:21–13:09 on the 17th, 12:20–13:08 on the 18th.", "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 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 19029 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Chicago, 2004: Friday 17 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Varada caturthi (purvaviddha, madhyahnavyapini), Samvatsari parva (Jain-caturthi paksa), Saubhagya caturthi (Bengal), Ganesa caturthi (madhyahna vyapini and purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-09-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-17", "confidence": "determinate" } ], "quote": "In Chicago, Gaṇeśa Caturthī 2004 falls on Friday 17 September. Caturthī runs from 07:03 on Fri 17 Sep to 05:36 on Sat 18 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24225, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2004-09-18T05:36:25-05:00", "utc": "2004-09-18T10:36:25Z", "ms": 1095503785338.8931 }, "end": { "local": "2004-09-19T03:55:10-05:00", "utc": "2004-09-19T08:55:10Z", "ms": 1095584110469.2812 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-18T05:36:25-05:00", "utc": "2004-09-18T10:36:25Z", "ms": 1095503785338.8931 }, "end": { "local": "2004-09-19T03:55:10-05:00", "utc": "2004-09-19T08:55:10Z", "ms": 1095584110469.2812 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-09-18", "window": { "start": { "local": "2004-09-18T12:20:10-05:00", "utc": "2004-09-18T17:20:10Z", "ms": 1095528009917.7372 }, "end": { "local": "2004-09-18T13:08:10-05:00", "utc": "2004-09-18T18:08:10Z", "ms": 1095530889917.7372 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-09-19", "window": { "start": { "local": "2004-09-19T12:19:49-05:00", "utc": "2004-09-19T17:19:49Z", "ms": 1095614388690.5659 }, "end": { "local": "2004-09-19T13:07:49-05:00", "utc": "2004-09-19T18:07:49Z", "ms": 1095617268690.5659 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:36 on Sat 18 Sep to 03:55 on Sun 19 Sep.", "fact": "2004-09-18T10:36:25Z → 2004-09-19T08:55:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 18th, 12:20–13:08 on the 19th.", "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 18th and 0 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: disputed → only-day · margin 24225 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Chicago, 2004: Saturday 18 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": "2004-09-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-18", "confidence": "determinate" } ], "quote": "In Chicago, Ṛṣi Pañcamī 2004 falls on Saturday 18 September. Pañcamī runs from 05:36 on Sat 18 Sep to 03:55 on Sun 19 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30278, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2004-09-19T03:55:10-05:00", "utc": "2004-09-19T08:55:10Z", "ms": 1095584110469.2812 }, "end": { "local": "2004-09-20T02:01:50-05:00", "utc": "2004-09-20T07:01:50Z", "ms": 1095663710082.8033 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-19T03:55:10-05:00", "utc": "2004-09-19T08:55:10Z", "ms": 1095584110469.2812 }, "end": { "local": "2004-09-20T02:01:50-05:00", "utc": "2004-09-20T07:01:50Z", "ms": 1095663710082.8033 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-09-19", "window": { "start": { "local": "2004-09-19T12:19:49-05:00", "utc": "2004-09-19T17:19:49Z", "ms": 1095614388690.5659 }, "end": { "local": "2004-09-19T13:07:49-05:00", "utc": "2004-09-19T18:07:49Z", "ms": 1095617268690.5659 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-09-20", "window": { "start": { "local": "2004-09-20T12:19:28-05:00", "utc": "2004-09-20T17:19:28Z", "ms": 1095700767509.6757 }, "end": { "local": "2004-09-20T13:07:28-05:00", "utc": "2004-09-20T18:07:28Z", "ms": 1095703647509.6757 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 03:55 on Sun 19 Sep to 02:02 on Mon 20 Sep.", "fact": "2004-09-19T08:55:10Z → 2004-09-20T07:01:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 19th, 12:19–13:07 on the 20th.", "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 19th and 0 of 48 on the 20th.", "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 30278 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Chicago, 2004: Sunday 19 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": "2004-09-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-19", "confidence": "determinate" } ], "quote": "In Chicago, Sūrya Ṣaṣṭhī (Bhādrapada) 2004 falls on Sunday 19 September. Ṣaṣṭhī runs from 03:55 on Sun 19 Sep to 02:02 on Mon 20 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37057, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2004-09-20T02:01:50-05:00", "utc": "2004-09-20T07:01:50Z", "ms": 1095663710082.8033 }, "end": { "local": "2004-09-20T23:58:25-05:00", "utc": "2004-09-21T04:58:25Z", "ms": 1095742704979.1779 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-20T02:01:50-05:00", "utc": "2004-09-20T07:01:50Z", "ms": 1095663710082.8033 }, "end": { "local": "2004-09-20T23:58:25-05:00", "utc": "2004-09-21T04:58:25Z", "ms": 1095742704979.1779 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-09-20", "window": { "start": { "local": "2004-09-20T12:19:28-05:00", "utc": "2004-09-20T17:19:28Z", "ms": 1095700767509.6757 }, "end": { "local": "2004-09-20T13:07:28-05:00", "utc": "2004-09-20T18:07:28Z", "ms": 1095703647509.6757 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-09-21", "window": { "start": { "local": "2004-09-21T12:19:06-05:00", "utc": "2004-09-21T17:19:06Z", "ms": 1095787146393.9421 }, "end": { "local": "2004-09-21T13:07:06-05:00", "utc": "2004-09-21T18:07:06Z", "ms": 1095790026393.9421 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 02:02 on Mon 20 Sep to 23:58 on Mon 20 Sep.", "fact": "2004-09-20T07:01:50Z → 2004-09-21T04:58:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:19–13:07 on the 20th, 12:19–13:07 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "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 37057 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Chicago, 2004: Monday 20 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": "2004-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-20", "confidence": "determinate" } ], "quote": "In Chicago, Muktābharaṇa Vrata 2004 falls on Monday 20 September. Saptamī runs from 02:02 on Mon 20 Sep to 23:58 on Mon 20 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31198, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2004-09-20T23:58:25-05:00", "utc": "2004-09-21T04:58:25Z", "ms": 1095742704979.1779 }, "end": { "local": "2004-09-21T21:47:05-05:00", "utc": "2004-09-22T02:47:05Z", "ms": 1095821224834.5157 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-20T23:58:25-05:00", "utc": "2004-09-21T04:58:25Z", "ms": 1095742704979.1779 }, "end": { "local": "2004-09-21T21:47:05-05:00", "utc": "2004-09-22T02:47:05Z", "ms": 1095821224834.5157 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-09-20", "window": { "start": { "local": "2004-09-20T12:19:28-05:00", "utc": "2004-09-20T17:19:28Z", "ms": 1095700767509.6757 }, "end": { "local": "2004-09-20T13:07:28-05:00", "utc": "2004-09-20T18:07:28Z", "ms": 1095703647509.6757 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-09-21", "window": { "start": { "local": "2004-09-21T12:19:06-05:00", "utc": "2004-09-21T17:19:06Z", "ms": 1095787146393.9421 }, "end": { "local": "2004-09-21T13:07:06-05:00", "utc": "2004-09-21T18:07:06Z", "ms": 1095790026393.9421 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 23:58 on Mon 20 Sep to 21:47 on Tue 21 Sep.", "fact": "2004-09-21T04:58:25Z → 2004-09-22T02:47:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:19–13:07 on the 20th, 12:19–13:07 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31198 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Chicago, 2004: Tuesday 21 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": "2004-09-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-21", "confidence": "determinate" } ], "quote": "In Chicago, Rādhāṣṭamī 2004 falls on Tuesday 21 September. Aṣṭamī runs from 23:58 on Mon 20 Sep to 21:47 on Tue 21 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-09-24", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29712, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-09-23T17:12:01-05:00", "utc": "2004-09-23T22:12:01Z", "ms": 1095977521355.1074 }, "end": { "local": "2004-09-24T14:56:01-05:00", "utc": "2004-09-24T19:56:01Z", "ms": 1096055760806.793 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-23T17:12:01-05:00", "utc": "2004-09-23T22:12:01Z", "ms": 1095977521355.1074 }, "end": { "local": "2004-09-24T14:56:01-05:00", "utc": "2004-09-24T19:56:01Z", "ms": 1096055760806.793 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-09-23", "window": { "start": { "local": "2004-09-23T06:39:46-05:00", "utc": "2004-09-23T11:39:46Z", "ms": 1095939586066.2722 }, "end": { "local": "2004-09-23T06:39:46-05:00", "utc": "2004-09-23T11:39:46Z", "ms": 1095939586066.2722 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-09-24", "window": { "start": { "local": "2004-09-24T06:40:49-05:00", "utc": "2004-09-24T11:40:49Z", "ms": 1096026048911.4614 }, "end": { "local": "2004-09-24T06:40:49-05:00", "utc": "2004-09-24T11:40:49Z", "ms": 1096026048911.4614 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:12 on Thu 23 Sep to 14:56 on Fri 24 Sep.", "fact": "2004-09-23T22:12:01Z → 2004-09-24T19:56:01Z" }, { "step": "kaala", "text": "Sunrise is at 06:40 on the 23rd and 06:41 on the 24th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 23rd and is 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 29712 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Chicago, 2004: Friday 24 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": "2004-09-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-24", "confidence": "determinate" } ], "quote": "In Chicago, Parivartanī Ekādaśī 2004 falls on Friday 24 September. Ekādaśī runs from 17:12 on Thu 23 Sep to 14:56 on Fri 24 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-09-24", "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/2004/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1084, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2004-09-24T14:56:01-05:00", "utc": "2004-09-24T19:56:01Z", "ms": 1096055760806.793 }, "end": { "local": "2004-09-25T12:47:39-05:00", "utc": "2004-09-25T17:47:39Z", "ms": 1096134458582.4086 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-24T14:56:01-05:00", "utc": "2004-09-24T19:56:01Z", "ms": 1096055760806.793 }, "end": { "local": "2004-09-25T12:47:39-05:00", "utc": "2004-09-25T17:47:39Z", "ms": 1096134458582.4086 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-09-24", "window": { "start": { "local": "2004-09-24T12:18:04-05:00", "utc": "2004-09-24T17:18:04Z", "ms": 1096046283641.2319 }, "end": { "local": "2004-09-24T13:06:04-05:00", "utc": "2004-09-24T18:06:04Z", "ms": 1096049163641.2319 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-09-25", "window": { "start": { "local": "2004-09-25T12:17:43-05:00", "utc": "2004-09-25T17:17:43Z", "ms": 1096132662994.6613 }, "end": { "local": "2004-09-25T13:05:43-05:00", "utc": "2004-09-25T18:05:43Z", "ms": 1096135542994.6613 } }, "covered_min": 30, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 14:56 on Fri 24 Sep to 12:48 on Sat 25 Sep.", "fact": "2004-09-24T19:56:01Z → 2004-09-25T17:47:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:18–13:06 on the 24th, 12:18–13:06 on the 25th.", "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 24th and 30 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1084 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Chicago, 2004: Saturday 25 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": "2004-09-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-25", "confidence": "determinate" } ], "quote": "In Chicago, Vāmana Jayantī 2004 falls on Saturday 25 September. Dvādaśī runs from 14:56 on Fri 24 Sep to 12:48 on Sat 25 Sep and covers 30 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/pradosha-vrata?on=2004-09-25", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21236, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-09-25T12:47:39-05:00", "utc": "2004-09-25T17:47:39Z", "ms": 1096134458582.4086 }, "end": { "local": "2004-09-26T10:52:50-05:00", "utc": "2004-09-26T15:52:50Z", "ms": 1096213969924.9722 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-25T12:47:39-05:00", "utc": "2004-09-25T17:47:39Z", "ms": 1096134458582.4086 }, "end": { "local": "2004-09-26T10:52:50-05:00", "utc": "2004-09-26T15:52:50Z", "ms": 1096213969924.9722 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-09-25", "window": { "start": { "local": "2004-09-25T18:41:34-05:00", "utc": "2004-09-25T23:41:34Z", "ms": 1096155694090.2845 }, "end": { "local": "2004-09-25T20:17:45-05:00", "utc": "2004-09-26T01:17:45Z", "ms": 1096161464884.158 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "2004-09-26", "window": { "start": { "local": "2004-09-26T18:39:50-05:00", "utc": "2004-09-26T23:39:50Z", "ms": 1096241990000.1038 }, "end": { "local": "2004-09-26T20:16:23-05:00", "utc": "2004-09-27T01:16:23Z", "ms": 1096247783115.2638 } }, "covered_min": 0, "window_min": 97, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:48 on Sat 25 Sep to 10:53 on Sun 26 Sep.", "fact": "2004-09-25T17:47:39Z → 2004-09-26T15:52:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:42–20:18 on the 25th, 18:40–20:16 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 96 of 96 minutes on the 25th and 0 of 97 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 21236 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2004: Saturday 25 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": "2004-09-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-25", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2004 falls on Saturday 25 September. Trayodaśī runs from 12:48 on Sat 25 Sep to 10:53 on Sun 26 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-09-25", "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/2004/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-09-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 668, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-09-26T10:52:50-05:00", "utc": "2004-09-26T15:52:50Z", "ms": 1096213969924.9722 }, "end": { "local": "2004-09-27T09:17:56-05:00", "utc": "2004-09-27T14:17:56Z", "ms": 1096294675982.0908 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2004-09-26T10:52:50-05:00", "utc": "2004-09-26T15:52:50Z", "ms": 1096213969924.9722 }, "end": { "local": "2004-09-27T09:17:56-05:00", "utc": "2004-09-27T14:17:56Z", "ms": 1096294675982.0908 } }, "kaala": "udaya-3", "days": [ { "local_date": "2004-09-26", "window": { "start": { "local": "2004-09-26T06:42:55-05:00", "utc": "2004-09-26T11:42:55Z", "ms": 1096198975044.3351 }, "end": { "local": "2004-09-26T09:06:18-05:00", "utc": "2004-09-26T14:06:18Z", "ms": 1096207578035.4888 } }, "covered_min": 0, "window_min": 143, "qualifies": false }, { "local_date": "2004-09-27", "window": { "start": { "local": "2004-09-27T06:43:58-05:00", "utc": "2004-09-27T11:43:58Z", "ms": 1096285438363.8036 }, "end": { "local": "2004-09-27T09:06:48-05:00", "utc": "2004-09-27T14:06:48Z", "ms": 1096294007917.4946 } }, "covered_min": 143, "window_min": 143, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:53 on Sun 26 Sep to 09:18 on Mon 27 Sep.", "fact": "2004-09-26T15:52:50Z → 2004-09-27T14:17:56Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:43–09:06 on the 26th, 06:44–09:07 on the 27th.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must hold through the first three muhūrtas after sunrise. It covers 0 of 143 minutes on the 26th and 143 of 143 on the 27th.", "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 668 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Chicago, 2004: Monday 27 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": "2004-09-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-09-27", "confidence": "determinate" } ], "quote": "In Chicago, Ananta Caturdaśī 2004 falls on Monday 27 September. Caturdaśī runs from 10:53 on Sun 26 Sep to 09:18 on Mon 27 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/sankashta-chaturthi?on=2004-10-01", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40146, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-10-01T08:10:53-05:00", "utc": "2004-10-01T13:10:53Z", "ms": 1096636252787.529 }, "end": { "local": "2004-10-02T09:27:08-05:00", "utc": "2004-10-02T14:27:08Z", "ms": 1096727227761.4763 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-01T08:10:53-05:00", "utc": "2004-10-01T13:10:53Z", "ms": 1096636252787.529 }, "end": { "local": "2004-10-02T09:27:08-05:00", "utc": "2004-10-02T14:27:08Z", "ms": 1096727227761.4763 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-10-01", "window": { "start": { "local": "2004-10-01T20:06:10-05:00", "utc": "2004-10-02T01:06:10Z", "ms": 1096679169752.9158 }, "end": { "local": "2004-10-01T20:06:10-05:00", "utc": "2004-10-02T01:06:10Z", "ms": 1096679169752.9158 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-10-02", "window": { "start": { "local": "2004-10-02T20:36:13-05:00", "utc": "2004-10-03T01:36:13Z", "ms": 1096767373300.828 }, "end": { "local": "2004-10-02T20:36:13-05:00", "utc": "2004-10-03T01:36:13Z", "ms": 1096767373300.828 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:11 on Fri 1 Oct to 09:27 on Sat 2 Oct.", "fact": "2004-10-01T13:10:53Z → 2004-10-02T14:27:08Z" }, { "step": "kaala", "text": "Moonrise is at 20:06 on the 1st and 20:36 on the 2nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 1st and is not on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 40146 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2004: Friday 1 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": "2004-10-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-01", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2004 falls on Friday 1 October. Caturthī runs from 08:11 on Fri 1 Oct to 09:27 on Sat 2 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/sankashta-chaturthi?on=2004-10-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30270, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2004-10-03T11:16:36-05:00", "utc": "2004-10-03T16:16:36Z", "ms": 1096820196465.6383 }, "end": { "local": "2004-10-04T13:30:48-05:00", "utc": "2004-10-04T18:30:48Z", "ms": 1096914647680.346 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-03T11:16:36-05:00", "utc": "2004-10-03T16:16:36Z", "ms": 1096820196465.6383 }, "end": { "local": "2004-10-04T13:30:48-05:00", "utc": "2004-10-04T18:30:48Z", "ms": 1096914647680.346 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-10-03", "window": { "start": { "local": "2004-10-03T21:12:10-05:00", "utc": "2004-10-04T02:12:10Z", "ms": 1096855930289.6196 }, "end": { "local": "2004-10-03T21:12:10-05:00", "utc": "2004-10-04T02:12:10Z", "ms": 1096855930289.6196 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-10-04", "window": { "start": { "local": "2004-10-04T21:55:17-05:00", "utc": "2004-10-05T02:55:17Z", "ms": 1096944917203.5748 }, "end": { "local": "2004-10-04T21:55:17-05:00", "utc": "2004-10-05T02:55:17Z", "ms": 1096944917203.5748 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 11:17 on Sun 3 Oct to 13:31 on Mon 4 Oct.", "fact": "2004-10-03T16:16:36Z → 2004-10-04T18:30:48Z" }, { "step": "kaala", "text": "Moonrise is at 21:12 on the 3rd and 21:55 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is on the 3rd and is not on the 4th.", "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 30270 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Chicago, 2004: Sunday 3 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chandra-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Candra sasthi (Sasthi current at moon-rise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-10-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-03", "confidence": "determinate" } ], "quote": "In Chicago, Candra Ṣaṣṭhī 2004 falls on Sunday 3 October. Ṣaṣṭhī runs from 11:17 on Sun 3 Oct to 13:31 on Mon 4 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-05", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 64, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2004-10-05T15:57:49-05:00", "utc": "2004-10-05T20:57:49Z", "ms": 1097009868638.5076 }, "end": { "local": "2004-10-06T18:23:50-05:00", "utc": "2004-10-06T23:23:50Z", "ms": 1097105030247.316 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-05T15:57:49-05:00", "utc": "2004-10-05T20:57:49Z", "ms": 1097009868638.5076 }, "end": { "local": "2004-10-06T18:23:50-05:00", "utc": "2004-10-06T23:23:50Z", "ms": 1097105030247.316 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-10-05", "window": { "start": { "local": "2004-10-05T18:24:27-05:00", "utc": "2004-10-05T23:24:27Z", "ms": 1097018667012.7434 }, "end": { "local": "2004-10-05T20:04:21-05:00", "utc": "2004-10-06T01:04:21Z", "ms": 1097024660567.6533 } }, "covered_min": 100, "window_min": 100, "qualifies": true }, { "local_date": "2004-10-06", "window": { "start": { "local": "2004-10-06T18:22:47-05:00", "utc": "2004-10-06T23:22:47Z", "ms": 1097104966579.4441 }, "end": { "local": "2004-10-06T20:03:02-05:00", "utc": "2004-10-07T01:03:02Z", "ms": 1097110982308.1289 } }, "covered_min": 1, "window_min": 100, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 15:58 on Tue 5 Oct to 18:24 on Wed 6 Oct.", "fact": "2004-10-05T20:57:49Z → 2004-10-06T23:23:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:24–20:04 on the 5th, 18:23–20:03 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 100 of 100 minutes on the 5th and 1 of 100 on the 6th.", "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 64 s < 300 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Chicago, 2004: Tuesday 5 October.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "jitashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-10-05", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-05", "confidence": "boundary" } ], "quote": "In Chicago, Jitāṣṭamī (Jitiya) 2004 falls on Tuesday 5 October. Aṣṭamī runs from 15:58 on Tue 5 Oct to 18:24 on Wed 6 Oct and covers all of pradoṣa that evening. It also reaches the next evening for 1 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 1 min 04 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19180, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2004-10-05T15:57:49-05:00", "utc": "2004-10-05T20:57:49Z", "ms": 1097009868638.5076 }, "end": { "local": "2004-10-06T18:23:50-05:00", "utc": "2004-10-06T23:23:50Z", "ms": 1097105030247.316 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-05T15:57:49-05:00", "utc": "2004-10-05T20:57:49Z", "ms": 1097009868638.5076 }, "end": { "local": "2004-10-06T18:23:50-05:00", "utc": "2004-10-06T23:23:50Z", "ms": 1097105030247.316 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-10-05", "window": { "start": { "local": "2004-10-05T22:46:00-05:00", "utc": "2004-10-06T03:46:00Z", "ms": 1097034360343.047 }, "end": { "local": "2004-10-05T22:46:00-05:00", "utc": "2004-10-06T03:46:00Z", "ms": 1097034360343.047 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-10-06", "window": { "start": { "local": "2004-10-06T23:43:31-05:00", "utc": "2004-10-07T04:43:31Z", "ms": 1097124210596.3628 }, "end": { "local": "2004-10-06T23:43:31-05:00", "utc": "2004-10-07T04:43:31Z", "ms": 1097124210596.3628 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 15:58 on Tue 5 Oct to 18:24 on Wed 6 Oct.", "fact": "2004-10-05T20:57:49Z → 2004-10-06T23:23:50Z" }, { "step": "kaala", "text": "Moonrise is at 22:46 on the 5th and 23:44 on the 6th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19180 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Chicago, 2004: Tuesday 5 October.", "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": "2004-10-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-05", "confidence": "determinate" } ], "quote": "In Chicago, Mahālakṣmī Vrata Samāpana 2004 falls on Tuesday 5 October. Aṣṭamī runs from 15:58 on Tue 5 Oct to 18:24 on Wed 6 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-10-09", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26892, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-10-08T22:19:53-05:00", "utc": "2004-10-09T03:19:53Z", "ms": 1097291992712.2081 }, "end": { "local": "2004-10-09T23:29:53-05:00", "utc": "2004-10-10T04:29:53Z", "ms": 1097382592533.269 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-08T22:19:53-05:00", "utc": "2004-10-09T03:19:53Z", "ms": 1097291992712.2081 }, "end": { "local": "2004-10-09T23:29:53-05:00", "utc": "2004-10-10T04:29:53Z", "ms": 1097382592533.269 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-10-09", "window": { "start": { "local": "2004-10-09T06:56:57-05:00", "utc": "2004-10-09T11:56:57Z", "ms": 1097323017223.8754 }, "end": { "local": "2004-10-09T06:56:57-05:00", "utc": "2004-10-09T11:56:57Z", "ms": 1097323017223.8754 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-10-10", "window": { "start": { "local": "2004-10-10T06:58:04-05:00", "utc": "2004-10-10T11:58:04Z", "ms": 1097409484042.8071 }, "end": { "local": "2004-10-10T06:58:04-05:00", "utc": "2004-10-10T11:58:04Z", "ms": 1097409484042.8071 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:20 on Fri 8 Oct to 23:30 on Sat 9 Oct.", "fact": "2004-10-09T03:19:53Z → 2004-10-10T04:29:53Z" }, { "step": "kaala", "text": "Sunrise is at 06:57 on the 9th and 06:58 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 9th and is not on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26892 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Chicago, 2004: Saturday 9 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": "2004-10-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-09", "confidence": "determinate" } ], "quote": "In Chicago, Indirā Ekādaśī 2004 falls on Saturday 9 October. Ekādaśī runs from 22:20 on Fri 8 Oct to 23:30 on Sat 9 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-10-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/pradosha-vrata?on=2004-10-11", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14131, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-10-11T00:00:49-05:00", "utc": "2004-10-11T05:00:49Z", "ms": 1097470848856.4012 }, "end": { "local": "2004-10-11T23:52:10-05:00", "utc": "2004-10-12T04:52:10Z", "ms": 1097556730343.3353 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-11T00:00:49-05:00", "utc": "2004-10-11T05:00:49Z", "ms": 1097470848856.4012 }, "end": { "local": "2004-10-11T23:52:10-05:00", "utc": "2004-10-12T04:52:10Z", "ms": 1097556730343.3353 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-10-10", "window": { "start": { "local": "2004-10-10T18:16:11-05:00", "utc": "2004-10-10T23:16:11Z", "ms": 1097450170582.2576 }, "end": { "local": "2004-10-10T19:57:55-05:00", "utc": "2004-10-11T00:57:55Z", "ms": 1097456274662.6844 } }, "covered_min": 0, "window_min": 102, "qualifies": false }, { "local_date": "2004-10-11", "window": { "start": { "local": "2004-10-11T18:14:33-05:00", "utc": "2004-10-11T23:14:33Z", "ms": 1097536473176.8611 }, "end": { "local": "2004-10-11T19:56:39-05:00", "utc": "2004-10-12T00:56:39Z", "ms": 1097542599240.3715 } }, "covered_min": 102, "window_min": 102, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:01 on Mon 11 Oct to 23:52 on Mon 11 Oct.", "fact": "2004-10-11T05:00:49Z → 2004-10-12T04:52:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:16–19:58 on the 10th, 18:15–19:57 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 0 of 102 minutes on the 10th and 102 of 102 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 14131 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2004: Monday 11 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": "2004-10-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-11", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2004 falls on Monday 11 October. Trayodaśī runs from 00:01 on Mon 11 Oct to 23:52 on Mon 11 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-10-11", "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/2004/shivaratri?on=2004-10-11", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1276, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-10-11T23:52:10-05:00", "utc": "2004-10-12T04:52:10Z", "ms": 1097556730343.3353 }, "end": { "local": "2004-10-12T23:06:27-05:00", "utc": "2004-10-13T04:06:27Z", "ms": 1097640387007.7507 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-11T23:52:10-05:00", "utc": "2004-10-12T04:52:10Z", "ms": 1097556730343.3353 }, "end": { "local": "2004-10-12T23:06:27-05:00", "utc": "2004-10-13T04:06:27Z", "ms": 1097640387007.7507 } }, "kaala": "nishita", "days": [ { "local_date": "2004-10-11", "window": { "start": { "local": "2004-10-12T00:13:26-05:00", "utc": "2004-10-12T05:13:26Z", "ms": 1097558005915.0249 }, "end": { "local": "2004-10-12T01:01:26-05:00", "utc": "2004-10-12T06:01:26Z", "ms": 1097560885915.0249 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-10-12", "window": { "start": { "local": "2004-10-13T00:13:11-05:00", "utc": "2004-10-13T05:13:11Z", "ms": 1097644391459.1239 }, "end": { "local": "2004-10-13T01:01:11-05:00", "utc": "2004-10-13T06:01:11Z", "ms": 1097647271459.1239 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:52 on Mon 11 Oct to 23:06 on Tue 12 Oct.", "fact": "2004-10-12T04:52:10Z → 2004-10-13T04:06:27Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:13–01:01 on the 11th, 00:13–01:01 on the 12th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1276 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2004: Monday 11 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": "2004-10-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-11", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2004 falls on Monday 11 October. Caturdaśī runs from 23:52 on Mon 11 Oct to 23:06 on Tue 12 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/shivaratri?on=2004-10-11", "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/2004/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21054, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2004-10-12T23:06:27-05:00", "utc": "2004-10-13T04:06:27Z", "ms": 1097640387007.7507 }, "end": { "local": "2004-10-13T21:48:16-05:00", "utc": "2004-10-14T02:48:16Z", "ms": 1097722095693.5065 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-12T23:06:27-05:00", "utc": "2004-10-13T04:06:27Z", "ms": 1097640387007.7507 }, "end": { "local": "2004-10-13T21:48:16-05:00", "utc": "2004-10-14T02:48:16Z", "ms": 1097722095693.5065 } }, "kaala": "aparahna", "days": [ { "local_date": "2004-10-12", "window": { "start": { "local": "2004-10-12T13:43:53-05:00", "utc": "2004-10-12T18:43:53Z", "ms": 1097606633344.7037 }, "end": { "local": "2004-10-12T15:58:25-05:00", "utc": "2004-10-12T20:58:25Z", "ms": 1097614704908.542 } }, "covered_min": 0, "window_min": 135, "qualifies": false }, { "local_date": "2004-10-13", "window": { "start": { "local": "2004-10-13T13:43:23-05:00", "utc": "2004-10-13T18:43:23Z", "ms": 1097693002878.3484 }, "end": { "local": "2004-10-13T15:57:22-05:00", "utc": "2004-10-13T20:57:22Z", "ms": 1097701041689.1754 } }, "covered_min": 134, "window_min": 134, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 23:06 on Tue 12 Oct to 21:48 on Wed 13 Oct.", "fact": "2004-10-13T04:06:27Z → 2004-10-14T02:48:16Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:44–15:58 on the 12th, 13:43–15:57 on the 13th.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 0 of 135 minutes on the 12th and 134 of 134 on the 13th.", "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 21054 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Chicago, 2004: Wednesday 13 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalaya-amavasya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Mahalaya amavasya (aparahnavyapini)" } ], "not_evaluated": "The note on p. 106 gives the first day in a decreasing tithimāna and the second in an increasing one, when amāvāsyā covers the whole of aparāhṇa on both days; tithimāna is not computed.", "kaala": "aparahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-10-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-13", "confidence": "determinate" } ], "quote": "In Chicago, Mahālaya Amāvāsyā 2004 falls on Wednesday 13 October. Amāvasyā runs from 23:06 on Tue 12 Oct to 21:48 on Wed 13 Oct and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25399, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2004-10-13T21:48:16-05:00", "utc": "2004-10-14T02:48:16Z", "ms": 1097722095693.5065 }, "end": { "local": "2004-10-14T20:03:29-05:00", "utc": "2004-10-15T01:03:29Z", "ms": 1097802208757.1262 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-13T21:48:16-05:00", "utc": "2004-10-14T02:48:16Z", "ms": 1097722095693.5065 }, "end": { "local": "2004-10-14T20:03:29-05:00", "utc": "2004-10-15T01:03:29Z", "ms": 1097802208757.1262 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-10-13", "window": { "start": { "local": "2004-10-13T12:12:23-05:00", "utc": "2004-10-13T17:12:23Z", "ms": 1097687543472.9349 }, "end": { "local": "2004-10-13T13:00:23-05:00", "utc": "2004-10-13T18:00:23Z", "ms": 1097690423472.9349 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-10-14", "window": { "start": { "local": "2004-10-14T12:12:10-05:00", "utc": "2004-10-14T17:12:10Z", "ms": 1097773929926.2817 }, "end": { "local": "2004-10-14T13:00:10-05:00", "utc": "2004-10-14T18:00:10Z", "ms": 1097776809926.2817 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 21:48 on Wed 13 Oct to 20:03 on Thu 14 Oct.", "fact": "2004-10-14T02:48:16Z → 2004-10-15T01:03:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:12–13:00 on the 13th, 12:12–13:00 on the 14th.", "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 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25399 s" }, { "step": "ruling", "text": "Navarātrārambha, Chicago, 2004: Thursday 14 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-10-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-14", "confidence": "determinate" } ], "quote": "In Chicago, Navarātrārambha (Navratri) 2004 falls on Thursday 14 October. Pratipadā runs from 21:48 on Wed 13 Oct to 20:03 on Thu 14 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/vinayaka-chaturthi?on=2004-10-17", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 856, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-10-16T15:39:55-05:00", "utc": "2004-10-16T20:39:55Z", "ms": 1097959195365.2294 }, "end": { "local": "2004-10-17T13:13:48-05:00", "utc": "2004-10-17T18:13:48Z", "ms": 1098036828343.041 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-16T15:39:55-05:00", "utc": "2004-10-16T20:39:55Z", "ms": 1097959195365.2294 }, "end": { "local": "2004-10-17T13:13:48-05:00", "utc": "2004-10-17T18:13:48Z", "ms": 1098036828343.041 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-10-16", "window": { "start": { "local": "2004-10-16T12:11:45-05:00", "utc": "2004-10-16T17:11:45Z", "ms": 1097946704517.8649 }, "end": { "local": "2004-10-16T12:59:45-05:00", "utc": "2004-10-16T17:59:45Z", "ms": 1097949584517.8649 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-10-17", "window": { "start": { "local": "2004-10-17T12:11:33-05:00", "utc": "2004-10-17T17:11:33Z", "ms": 1098033092682.8376 }, "end": { "local": "2004-10-17T12:59:33-05:00", "utc": "2004-10-17T17:59:33Z", "ms": 1098035972682.8376 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:40 on Sat 16 Oct to 13:14 on Sun 17 Oct.", "fact": "2004-10-16T20:39:55Z → 2004-10-17T18:13:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:12–13:00 on the 16th, 12:12–13:00 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 856 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2004: Sunday 17 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": "2004-10-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-17", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2004 falls on Sunday 17 October. Caturthī runs from 15:40 on Sat 16 Oct to 13:14 on Sun 17 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/vinayaka-chaturthi?on=2004-10-17", "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/2004/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-19", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 1743, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2004-10-19T08:20:58-05:00", "utc": "2004-10-19T13:20:58Z", "ms": 1098192057672.0372 }, "end": { "local": "2004-10-20T06:03:30-05:00", "utc": "2004-10-20T11:03:30Z", "ms": 1098270209560.0378 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-19T08:20:58-05:00", "utc": "2004-10-19T13:20:58Z", "ms": 1098192057672.0372 }, "end": { "local": "2004-10-20T06:03:30-05:00", "utc": "2004-10-20T11:03:30Z", "ms": 1098270209560.0378 } }, "kaala": "udaya-1", "days": [ { "local_date": "2004-10-19", "window": { "start": { "local": "2004-10-19T07:08:20-05:00", "utc": "2004-10-19T12:08:20Z", "ms": 1098187699848.4099 }, "end": { "local": "2004-10-19T07:51:55-05:00", "utc": "2004-10-19T12:51:55Z", "ms": 1098190314644.4205 } }, "covered_min": 0, "window_min": 44, "qualifies": false }, { "local_date": "2004-10-20", "window": { "start": { "local": "2004-10-20T07:09:30-05:00", "utc": "2004-10-20T12:09:30Z", "ms": 1098274169807.773 }, "end": { "local": "2004-10-20T07:52:54-05:00", "utc": "2004-10-20T12:52:54Z", "ms": 1098276773942.3933 } }, "covered_min": 0, "window_min": 43, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 08:21 on Tue 19 Oct to 06:03 on Wed 20 Oct.", "fact": "2004-10-19T13:20:58Z → 2004-10-20T11:03:30Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 07:08–07:52 on the 19th, 07:09–07:53 on the 20th.", "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 44 minutes on the 19th and 0 of 43 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither morning qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 1743 s" }, { "step": "ruling", "text": "Durgā Saptamī, Chicago, 2004: Tuesday 19 October.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "durga-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Durga saptami (paraviddha) — covering one muhurta from sunrise" } ], "kaala": "udaya-1", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-10-19", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-19", "confidence": "boundary" } ], "quote": "In Chicago, Durgā Saptamī 2004 falls on Tuesday 19 October. Saptamī runs from 08:21 on Tue 19 Oct to 06:03 on Wed 20 Oct, and reaches the first muhūrta after sunrise on neither day.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22051, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2004-10-20T06:03:30-05:00", "utc": "2004-10-20T11:03:30Z", "ms": 1098270209560.0378 }, "end": { "local": "2004-10-21T03:57:03-05:00", "utc": "2004-10-21T08:57:03Z", "ms": 1098349022794.7854 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-20T06:03:30-05:00", "utc": "2004-10-20T11:03:30Z", "ms": 1098270209560.0378 }, "end": { "local": "2004-10-21T03:57:03-05:00", "utc": "2004-10-21T08:57:03Z", "ms": 1098349022794.7854 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-10-20", "window": { "start": { "local": "2004-10-20T12:11:01-05:00", "utc": "2004-10-20T17:11:01Z", "ms": 1098292260817.4258 }, "end": { "local": "2004-10-20T12:59:01-05:00", "utc": "2004-10-20T17:59:01Z", "ms": 1098295140817.4258 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-10-21", "window": { "start": { "local": "2004-10-21T12:10:51-05:00", "utc": "2004-10-21T17:10:51Z", "ms": 1098378651457.03 }, "end": { "local": "2004-10-21T12:58:51-05:00", "utc": "2004-10-21T17:58:51Z", "ms": 1098381531457.03 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 06:03 on Wed 20 Oct to 03:57 on Thu 21 Oct.", "fact": "2004-10-20T11:03:30Z → 2004-10-21T08:57:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:11–12:59 on the 20th, 12:11–12:59 on the 21st.", "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 20th and 0 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22051 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Chicago, 2004: Wednesday 20 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": "2004-10-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-20", "confidence": "determinate" } ], "quote": "In Chicago, Mahāṣṭamī (Durga Ashtami) 2004 falls on Wednesday 20 October. Aṣṭamī runs from 06:03 on Wed 20 Oct to 03:57 on Thu 21 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29629, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2004-10-21T03:57:03-05:00", "utc": "2004-10-21T08:57:03Z", "ms": 1098349022794.7854 }, "end": { "local": "2004-10-22T02:04:42-05:00", "utc": "2004-10-22T07:04:42Z", "ms": 1098428682221.0996 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-21T03:57:03-05:00", "utc": "2004-10-21T08:57:03Z", "ms": 1098349022794.7854 }, "end": { "local": "2004-10-22T02:04:42-05:00", "utc": "2004-10-22T07:04:42Z", "ms": 1098428682221.0996 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-10-21", "window": { "start": { "local": "2004-10-21T12:10:51-05:00", "utc": "2004-10-21T17:10:51Z", "ms": 1098378651457.03 }, "end": { "local": "2004-10-21T12:58:51-05:00", "utc": "2004-10-21T17:58:51Z", "ms": 1098381531457.03 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-10-22", "window": { "start": { "local": "2004-10-22T12:10:43-05:00", "utc": "2004-10-22T17:10:43Z", "ms": 1098465042753.0847 }, "end": { "local": "2004-10-22T12:58:43-05:00", "utc": "2004-10-22T17:58:43Z", "ms": 1098467922753.0847 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 03:57 on Thu 21 Oct to 02:05 on Fri 22 Oct.", "fact": "2004-10-21T08:57:03Z → 2004-10-22T07:04:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:11–12:59 on the 21st, 12:11–12:59 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 29629 s" }, { "step": "ruling", "text": "Mahānavamī, Chicago, 2004: Thursday 21 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": "2004-10-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-21", "confidence": "determinate" } ], "quote": "In Chicago, Mahānavamī 2004 falls on Thursday 21 October. Navamī runs from 03:57 on Thu 21 Oct to 02:05 on Fri 22 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18231, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "2004-10-22T02:04:42-05:00", "utc": "2004-10-22T07:04:42Z", "ms": 1098428682221.0996 }, "end": { "local": "2004-10-23T00:29:09-05:00", "utc": "2004-10-23T05:29:09Z", "ms": 1098509349323.6959 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-22T02:04:42-05:00", "utc": "2004-10-22T07:04:42Z", "ms": 1098428682221.0996 }, "end": { "local": "2004-10-23T00:29:09-05:00", "utc": "2004-10-23T05:29:09Z", "ms": 1098509349323.6959 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-10-22", "window": { "start": { "local": "2004-10-22T12:10:43-05:00", "utc": "2004-10-22T17:10:43Z", "ms": 1098465042753.0847 }, "end": { "local": "2004-10-22T12:58:43-05:00", "utc": "2004-10-22T17:58:43Z", "ms": 1098467922753.0847 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-10-23", "window": { "start": { "local": "2004-10-23T12:10:35-05:00", "utc": "2004-10-23T17:10:35Z", "ms": 1098551434721.9316 }, "end": { "local": "2004-10-23T12:58:35-05:00", "utc": "2004-10-23T17:58:35Z", "ms": 1098554314721.9316 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 02:05 on Fri 22 Oct to 00:29 on Sat 23 Oct.", "fact": "2004-10-22T07:04:42Z → 2004-10-23T05:29:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:11–12:59 on the 22nd, 12:11–12:59 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Daśamī touches Śravaṇa in the day time on neither day, so the rest of the rule applies. Daśamī must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 0 of 48 on the 23rd.", "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 18231 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Chicago, 2004: Friday 22 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vijaya-dashami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 10 Vijaya dasami (In Bengal it is observed as paraviddha, covering one muhurta from sunrise. In other places, if it touches Sravana naksatra in the day time it is observed on that day), Sarasvati visarjana (to be observed in naksatra Sravana), Dasahara." } ], "not_evaluated": "The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day", "conjunction": { "nakshatra": "Śravaṇa", "kaala": "daytime" } }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-10-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-22", "confidence": "determinate" } ], "quote": "In Chicago, Vijayā Daśamī (Dussehra) 2004 falls on Friday 22 October. Daśamī touches Śravaṇa in the day time on neither day, so madhyāhna decides. Daśamī runs from 02:05 on Fri 22 Oct to 00:29 on Sat 23 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-10-23", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24232, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-10-23T00:29:09-05:00", "utc": "2004-10-23T05:29:09Z", "ms": 1098509349323.6959 }, "end": { "local": "2004-10-23T23:12:52-05:00", "utc": "2004-10-24T04:12:52Z", "ms": 1098591172428.1974 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-23T00:29:09-05:00", "utc": "2004-10-23T05:29:09Z", "ms": 1098509349323.6959 }, "end": { "local": "2004-10-23T23:12:52-05:00", "utc": "2004-10-24T04:12:52Z", "ms": 1098591172428.1974 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-10-23", "window": { "start": { "local": "2004-10-23T07:13:01-05:00", "utc": "2004-10-23T12:13:01Z", "ms": 1098533581391.8071 }, "end": { "local": "2004-10-23T07:13:01-05:00", "utc": "2004-10-23T12:13:01Z", "ms": 1098533581391.8071 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-10-24", "window": { "start": { "local": "2004-10-24T07:14:12-05:00", "utc": "2004-10-24T12:14:12Z", "ms": 1098620052474.7526 }, "end": { "local": "2004-10-24T07:14:12-05:00", "utc": "2004-10-24T12:14:12Z", "ms": 1098620052474.7526 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:29 on Sat 23 Oct to 23:13 on Sat 23 Oct.", "fact": "2004-10-23T05:29:09Z → 2004-10-24T04:12:52Z" }, { "step": "kaala", "text": "Sunrise is at 07:13 on the 23rd and 07:14 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 24232 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Chicago, 2004: Saturday 23 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": "2004-10-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-23", "confidence": "determinate" } ], "quote": "In Chicago, Pāśāṅkuśā Ekādaśī 2004 falls on Saturday 23 October. Ekādaśī runs from 00:29 on Sat 23 Oct to 23:13 on Sat 23 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-10-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/pradosha-vrata?on=2004-10-25", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7636, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-10-24T22:18:15-05:00", "utc": "2004-10-25T03:18:15Z", "ms": 1098674295072.6667 }, "end": { "local": "2004-10-25T21:47:40-05:00", "utc": "2004-10-26T02:47:40Z", "ms": 1098758859571.9989 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2004-10-24T22:18:15-05:00", "utc": "2004-10-25T03:18:15Z", "ms": 1098674295072.6667 }, "end": { "local": "2004-10-25T21:47:40-05:00", "utc": "2004-10-26T02:47:40Z", "ms": 1098758859571.9989 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-10-24", "window": { "start": { "local": "2004-10-24T17:54:42-05:00", "utc": "2004-10-24T22:54:42Z", "ms": 1098658482285.8516 }, "end": { "local": "2004-10-24T19:41:28-05:00", "utc": "2004-10-25T00:41:28Z", "ms": 1098664887824.957 } }, "covered_min": 0, "window_min": 107, "qualifies": false }, { "local_date": "2004-10-25", "window": { "start": { "local": "2004-10-25T17:53:18-05:00", "utc": "2004-10-25T22:53:18Z", "ms": 1098744797661.0654 }, "end": { "local": "2004-10-25T19:40:24-05:00", "utc": "2004-10-26T00:40:24Z", "ms": 1098751224033.0684 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:18 on Sun 24 Oct to 21:48 on Mon 25 Oct.", "fact": "2004-10-25T03:18:15Z → 2004-10-26T02:47:40Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:55–19:41 on the 24th, 17:53–19:40 on the 25th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 107 minutes on the 24th and 107 of 107 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 7636 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2004: Monday 25 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": "2004-10-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-25", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2004 falls on Monday 25 October. Trayodaśī runs from 22:18 on Sun 24 Oct to 21:48 on Mon 25 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-10-25", "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/2004/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25525, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-10-31T01:13:57-06:00", "utc": "2004-10-31T07:13:57Z", "ms": 1099206836759.6311 }, "end": { "local": "2004-11-01T03:26:38-06:00", "utc": "2004-11-01T09:26:38Z", "ms": 1099301197823.931 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-10-31T01:13:57-06:00", "utc": "2004-10-31T07:13:57Z", "ms": 1099206836759.6311 }, "end": { "local": "2004-11-01T03:26:38-06:00", "utc": "2004-11-01T09:26:38Z", "ms": 1099301197823.931 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-10-30", "window": { "start": { "local": "2004-10-30T19:08:32-05:00", "utc": "2004-10-31T00:08:32Z", "ms": 1099181311534.7078 }, "end": { "local": "2004-10-30T19:08:32-05:00", "utc": "2004-10-31T00:08:32Z", "ms": 1099181311534.7078 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-10-31", "window": { "start": { "local": "2004-10-31T18:48:48-06:00", "utc": "2004-11-01T00:48:48Z", "ms": 1099270128313.4486 }, "end": { "local": "2004-10-31T18:48:48-06:00", "utc": "2004-11-01T00:48:48Z", "ms": 1099270128313.4486 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:14 on Sun 31 Oct to 03:27 on Mon 1 Nov.", "fact": "2004-10-31T07:13:57Z → 2004-11-01T09:26:38Z" }, { "step": "kaala", "text": "Moonrise is at 19:09 on the 30th and 18:49 on the 31st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 30th and is on the 31st.", "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 25525 s" }, { "step": "ruling", "text": "Karaka Caturthī, Chicago, 2004: Sunday 31 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": "2004-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-31", "confidence": "determinate" } ], "quote": "In Chicago, Karaka Caturthī (Karwa Chauth) 2004 falls on Sunday 31 October. Caturthī runs from 01:14 on Sun 31 Oct to 03:27 on Mon 1 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/sankashta-chaturthi?on=2004-10-31", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25525, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-10-31T01:13:57-06:00", "utc": "2004-10-31T07:13:57Z", "ms": 1099206836759.6311 }, "end": { "local": "2004-11-01T03:26:38-06:00", "utc": "2004-11-01T09:26:38Z", "ms": 1099301197823.931 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-10-31T01:13:57-06:00", "utc": "2004-10-31T07:13:57Z", "ms": 1099206836759.6311 }, "end": { "local": "2004-11-01T03:26:38-06:00", "utc": "2004-11-01T09:26:38Z", "ms": 1099301197823.931 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-10-30", "window": { "start": { "local": "2004-10-30T19:08:32-05:00", "utc": "2004-10-31T00:08:32Z", "ms": 1099181311534.7078 }, "end": { "local": "2004-10-30T19:08:32-05:00", "utc": "2004-10-31T00:08:32Z", "ms": 1099181311534.7078 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-10-31", "window": { "start": { "local": "2004-10-31T18:48:48-06:00", "utc": "2004-11-01T00:48:48Z", "ms": 1099270128313.4486 }, "end": { "local": "2004-10-31T18:48:48-06:00", "utc": "2004-11-01T00:48:48Z", "ms": 1099270128313.4486 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:14 on Sun 31 Oct to 03:27 on Mon 1 Nov.", "fact": "2004-10-31T07:13:57Z → 2004-11-01T09:26:38Z" }, { "step": "kaala", "text": "Moonrise is at 19:09 on the 30th and 18:49 on the 31st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 30th and is on the 31st.", "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 25525 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2004: Sunday 31 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": "2004-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-10-31", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2004 falls on Sunday 31 October. Caturthī runs from 01:14 on Sun 31 Oct to 03:27 on Mon 1 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/sankashta-chaturthi?on=2004-10-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38948, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2004-11-04T10:48:56-06:00", "utc": "2004-11-04T16:48:56Z", "ms": 1099586936231.4438 }, "end": { "local": "2004-11-05T12:51:06-06:00", "utc": "2004-11-05T18:51:06Z", "ms": 1099680666413.0557 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-04T10:48:56-06:00", "utc": "2004-11-04T16:48:56Z", "ms": 1099586936231.4438 }, "end": { "local": "2004-11-05T12:51:06-06:00", "utc": "2004-11-05T18:51:06Z", "ms": 1099680666413.0557 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-11-04", "window": { "start": { "local": "2004-11-04T22:35:13-06:00", "utc": "2004-11-05T04:35:13Z", "ms": 1099629313113.4934 }, "end": { "local": "2004-11-04T22:35:13-06:00", "utc": "2004-11-05T04:35:13Z", "ms": 1099629313113.4934 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-11-05", "window": { "start": { "local": "2004-11-05T23:40:14-06:00", "utc": "2004-11-06T05:40:14Z", "ms": 1099719613975.0242 }, "end": { "local": "2004-11-05T23:40:14-06:00", "utc": "2004-11-06T05:40:14Z", "ms": 1099719613975.0242 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 10:49 on Thu 4 Nov to 12:51 on Fri 5 Nov.", "fact": "2004-11-04T16:48:56Z → 2004-11-05T18:51:06Z" }, { "step": "kaala", "text": "Moonrise is at 22:35 on the 4th and 23:40 on the 5th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 4th and is not on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38948 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Chicago, 2004: Thursday 4 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ahoyi-ashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Ahoyi astami (Gujerat) (current at moonrise), Karastami (Maharashtra). If occurs on two successive days, it is to be observed on the second day." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-04", "confidence": "determinate" } ], "quote": "In Chicago, Ahoyī Aṣṭamī 2004 falls on Thursday 4 November. Aṣṭamī runs from 10:49 on Thu 4 Nov to 12:51 on Fri 5 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-11-08", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31102, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-11-07T15:09:34-06:00", "utc": "2004-11-07T21:09:34Z", "ms": 1099861774248.9128 }, "end": { "local": "2004-11-08T15:12:55-06:00", "utc": "2004-11-08T21:12:55Z", "ms": 1099948374763.5415 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-07T15:09:34-06:00", "utc": "2004-11-07T21:09:34Z", "ms": 1099861774248.9128 }, "end": { "local": "2004-11-08T15:12:55-06:00", "utc": "2004-11-08T21:12:55Z", "ms": 1099948374763.5415 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-11-07", "window": { "start": { "local": "2004-11-07T06:31:12-06:00", "utc": "2004-11-07T12:31:12Z", "ms": 1099830672263.2756 }, "end": { "local": "2004-11-07T06:31:12-06:00", "utc": "2004-11-07T12:31:12Z", "ms": 1099830672263.2756 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-11-08", "window": { "start": { "local": "2004-11-08T06:32:26-06:00", "utc": "2004-11-08T12:32:26Z", "ms": 1099917146245.6191 }, "end": { "local": "2004-11-08T06:32:26-06:00", "utc": "2004-11-08T12:32:26Z", "ms": 1099917146245.6191 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:10 on Sun 7 Nov to 15:13 on Mon 8 Nov.", "fact": "2004-11-07T21:09:34Z → 2004-11-08T21:12:55Z" }, { "step": "kaala", "text": "Sunrise is at 06:31 on the 7th and 06:32 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 7th and is on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31102 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Chicago, 2004: Monday 8 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": "2004-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-08", "confidence": "determinate" } ], "quote": "In Chicago, Ramā Ekādaśī 2004 falls on Monday 8 November. Ekādaśī runs from 15:10 on Sun 7 Nov to 15:13 on Mon 8 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-11-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4979, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2004-11-08T15:12:55-06:00", "utc": "2004-11-08T21:12:55Z", "ms": 1099948374763.5415 }, "end": { "local": "2004-11-09T14:30:12-06:00", "utc": "2004-11-09T20:30:12Z", "ms": 1100032212349.8003 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-08T15:12:55-06:00", "utc": "2004-11-08T21:12:55Z", "ms": 1099948374763.5415 }, "end": { "local": "2004-11-09T14:30:12-06:00", "utc": "2004-11-09T20:30:12Z", "ms": 1100032212349.8003 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-11-08", "window": { "start": { "local": "2004-11-08T16:35:54-06:00", "utc": "2004-11-08T22:35:54Z", "ms": 1099953354147.515 }, "end": { "local": "2004-11-08T18:27:36-06:00", "utc": "2004-11-09T00:27:36Z", "ms": 1099960056294.1882 } }, "covered_min": 112, "window_min": 112, "qualifies": true }, { "local_date": "2004-11-09", "window": { "start": { "local": "2004-11-09T16:34:51-06:00", "utc": "2004-11-09T22:34:51Z", "ms": 1100039691235.7366 }, "end": { "local": "2004-11-09T18:26:52-06:00", "utc": "2004-11-10T00:26:52Z", "ms": 1100046411635.5166 } }, "covered_min": 0, "window_min": 112, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 15:13 on Mon 8 Nov to 14:30 on Tue 9 Nov.", "fact": "2004-11-08T21:12:55Z → 2004-11-09T20:30:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:36–18:28 on the 8th, 16:35–18:27 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 112 of 112 minutes on the 8th and 0 of 112 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 4979 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Chicago, 2004: Monday 8 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-08", "confidence": "determinate" } ], "quote": "In Chicago, Govatsa Dvādaśī (Vasu Baras) 2004 falls on Monday 8 November. Dvādaśī runs from 15:13 on Mon 8 Nov to 14:30 on Tue 9 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7479, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-11-09T14:30:12-06:00", "utc": "2004-11-09T20:30:12Z", "ms": 1100032212349.8003 }, "end": { "local": "2004-11-10T13:04:19-06:00", "utc": "2004-11-10T19:04:19Z", "ms": 1100113459258.103 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-09T14:30:12-06:00", "utc": "2004-11-09T20:30:12Z", "ms": 1100032212349.8003 }, "end": { "local": "2004-11-10T13:04:19-06:00", "utc": "2004-11-10T19:04:19Z", "ms": 1100113459258.103 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-11-09", "window": { "start": { "local": "2004-11-09T16:34:51-06:00", "utc": "2004-11-09T22:34:51Z", "ms": 1100039691235.7366 }, "end": { "local": "2004-11-09T18:26:52-06:00", "utc": "2004-11-10T00:26:52Z", "ms": 1100046411635.5166 } }, "covered_min": 112, "window_min": 112, "qualifies": true }, { "local_date": "2004-11-10", "window": { "start": { "local": "2004-11-10T16:33:50-06:00", "utc": "2004-11-10T22:33:50Z", "ms": 1100126030073.2944 }, "end": { "local": "2004-11-10T18:26:08-06:00", "utc": "2004-11-11T00:26:08Z", "ms": 1100132768485.853 } }, "covered_min": 0, "window_min": 112, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:30 on Tue 9 Nov to 13:04 on Wed 10 Nov.", "fact": "2004-11-09T20:30:12Z → 2004-11-10T19:04:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:35–18:27 on the 9th, 16:34–18:26 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 112 of 112 minutes on the 9th and 0 of 112 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 7479 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Chicago, 2004: Tuesday 9 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dipadana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 13 Yama dipadana (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-09", "confidence": "determinate" } ], "quote": "In Chicago, Yama Dīpadāna 2004 falls on Tuesday 9 November. Trayodaśī runs from 14:30 on Tue 9 Nov to 13:04 on Wed 10 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/pradosha-vrata?on=2004-11-09", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7479, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-11-09T14:30:12-06:00", "utc": "2004-11-09T20:30:12Z", "ms": 1100032212349.8003 }, "end": { "local": "2004-11-10T13:04:19-06:00", "utc": "2004-11-10T19:04:19Z", "ms": 1100113459258.103 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-09T14:30:12-06:00", "utc": "2004-11-09T20:30:12Z", "ms": 1100032212349.8003 }, "end": { "local": "2004-11-10T13:04:19-06:00", "utc": "2004-11-10T19:04:19Z", "ms": 1100113459258.103 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-11-09", "window": { "start": { "local": "2004-11-09T16:34:51-06:00", "utc": "2004-11-09T22:34:51Z", "ms": 1100039691235.7366 }, "end": { "local": "2004-11-09T18:26:52-06:00", "utc": "2004-11-10T00:26:52Z", "ms": 1100046411635.5166 } }, "covered_min": 112, "window_min": 112, "qualifies": true }, { "local_date": "2004-11-10", "window": { "start": { "local": "2004-11-10T16:33:50-06:00", "utc": "2004-11-10T22:33:50Z", "ms": 1100126030073.2944 }, "end": { "local": "2004-11-10T18:26:08-06:00", "utc": "2004-11-11T00:26:08Z", "ms": 1100132768485.853 } }, "covered_min": 0, "window_min": 112, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:30 on Tue 9 Nov to 13:04 on Wed 10 Nov.", "fact": "2004-11-09T20:30:12Z → 2004-11-10T19:04:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:35–18:27 on the 9th, 16:34–18:26 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 112 of 112 minutes on the 9th and 0 of 112 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7479 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2004: Tuesday 9 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": "2004-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-09", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2004 falls on Tuesday 9 November. Trayodaśī runs from 14:30 on Tue 9 Nov to 13:04 on Wed 10 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-11-09", "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/2004/shivaratri?on=2004-11-10", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36400, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-11-10T13:04:19-06:00", "utc": "2004-11-10T19:04:19Z", "ms": 1100113459258.103 }, "end": { "local": "2004-11-11T11:00:50-06:00", "utc": "2004-11-11T17:00:50Z", "ms": 1100192449783.7637 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-10T13:04:19-06:00", "utc": "2004-11-10T19:04:19Z", "ms": 1100113459258.103 }, "end": { "local": "2004-11-11T11:00:50-06:00", "utc": "2004-11-11T17:00:50Z", "ms": 1100192449783.7637 } }, "kaala": "nishita", "days": [ { "local_date": "2004-11-10", "window": { "start": { "local": "2004-11-10T23:10:59-06:00", "utc": "2004-11-11T05:10:59Z", "ms": 1100149859120.3887 }, "end": { "local": "2004-11-10T23:58:59-06:00", "utc": "2004-11-11T05:58:59Z", "ms": 1100152739120.3887 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-11-11", "window": { "start": { "local": "2004-11-11T23:11:06-06:00", "utc": "2004-11-12T05:11:06Z", "ms": 1100236266350.7778 }, "end": { "local": "2004-11-11T23:59:06-06:00", "utc": "2004-11-12T05:59:06Z", "ms": 1100239146350.7778 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:04 on Wed 10 Nov to 11:01 on Thu 11 Nov.", "fact": "2004-11-10T19:04:19Z → 2004-11-11T17:00:50Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:11–23:59 on the 10th, 23:11–23:59 on the 11th.", "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 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36400 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2004: Wednesday 10 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": "2004-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-10", "confidence": "determinate" } ], "quote": "In Chicago, Śivarātri 2004 falls on Wednesday 10 November. Caturdaśī runs from 13:04 on Wed 10 Nov to 11:01 on Thu 11 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/shivaratri?on=2004-11-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15882, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-11-10T13:04:19-06:00", "utc": "2004-11-10T19:04:19Z", "ms": 1100113459258.103 }, "end": { "local": "2004-11-11T11:00:50-06:00", "utc": "2004-11-11T17:00:50Z", "ms": 1100192449783.7637 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-10T13:04:19-06:00", "utc": "2004-11-10T19:04:19Z", "ms": 1100113459258.103 }, "end": { "local": "2004-11-11T11:00:50-06:00", "utc": "2004-11-11T17:00:50Z", "ms": 1100192449783.7637 } }, "kaala": "arunodaya", "days": [ { "local_date": "2004-11-10", "window": { "start": { "local": "2004-11-10T04:42:54-06:00", "utc": "2004-11-10T10:42:54Z", "ms": 1100083373834.3074 }, "end": { "local": "2004-11-10T06:34:54-06:00", "utc": "2004-11-10T12:34:54Z", "ms": 1100090094234.0874 } }, "covered_min": 0, "window_min": 112, "qualifies": false }, { "local_date": "2004-11-11", "window": { "start": { "local": "2004-11-11T04:43:50-06:00", "utc": "2004-11-11T10:43:50Z", "ms": 1100169829754.9246 }, "end": { "local": "2004-11-11T06:36:08-06:00", "utc": "2004-11-11T12:36:08Z", "ms": 1100176568167.4832 } }, "covered_min": 112, "window_min": 112, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:04 on Wed 10 Nov to 11:01 on Thu 11 Nov.", "fact": "2004-11-10T19:04:19Z → 2004-11-11T17:00:50Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:43–06:35 on the 10th, 04:44–06:36 on the 11th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 0 of 112 minutes on the 10th and 112 of 112 on the 11th.", "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 15882 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Chicago, 2004: Thursday 11 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naraka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Naraka caturdasi (covering a period of 4 ghatikas before sunrise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "arunodaya", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-11", "confidence": "determinate" } ], "quote": "In Chicago, Naraka Caturdaśī (Choti Diwali) 2004 falls on Thursday 11 November. Caturdaśī runs from 13:04 on Wed 10 Nov to 11:01 on Thu 11 Nov and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19921, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2004-11-11T11:00:50-06:00", "utc": "2004-11-11T17:00:50Z", "ms": 1100192449783.7637 }, "end": { "local": "2004-11-12T08:27:11-06:00", "utc": "2004-11-12T14:27:11Z", "ms": 1100269630819.647 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-11T11:00:50-06:00", "utc": "2004-11-11T17:00:50Z", "ms": 1100192449783.7637 }, "end": { "local": "2004-11-12T08:27:11-06:00", "utc": "2004-11-12T14:27:11Z", "ms": 1100269630819.647 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-11-11", "window": { "start": { "local": "2004-11-11T16:32:51-06:00", "utc": "2004-11-11T22:32:51Z", "ms": 1100212370694.2236 }, "end": { "local": "2004-11-11T18:25:27-06:00", "utc": "2004-11-12T00:25:27Z", "ms": 1100219126869.3047 } }, "covered_min": 113, "window_min": 113, "qualifies": true }, { "local_date": "2004-11-12", "window": { "start": { "local": "2004-11-12T16:31:53-06:00", "utc": "2004-11-12T22:31:53Z", "ms": 1100298713131.2583 }, "end": { "local": "2004-11-12T18:24:47-06:00", "utc": "2004-11-13T00:24:47Z", "ms": 1100305486808.4973 } }, "covered_min": 0, "window_min": 113, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 11:01 on Thu 11 Nov to 08:27 on Fri 12 Nov.", "fact": "2004-11-11T17:00:50Z → 2004-11-12T14:27:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:33–18:25 on the 11th, 16:32–18:25 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 113 of 113 minutes on the 11th and 0 of 113 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19921 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Chicago, 2004: Thursday 11 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "diwali-lakshmi-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-11", "confidence": "determinate" } ], "quote": "In Chicago, Lakṣmī Pūjā (Diwali) 2004 falls on Thursday 11 November. Amāvasyā runs from 11:01 on Thu 11 Nov to 08:27 on Fri 12 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30484, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2004-11-11T11:00:50-06:00", "utc": "2004-11-11T17:00:50Z", "ms": 1100192449783.7637 }, "end": { "local": "2004-11-12T08:27:11-06:00", "utc": "2004-11-12T14:27:11Z", "ms": 1100269630819.647 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-11T11:00:50-06:00", "utc": "2004-11-11T17:00:50Z", "ms": 1100192449783.7637 }, "end": { "local": "2004-11-12T08:27:11-06:00", "utc": "2004-11-12T14:27:11Z", "ms": 1100269630819.647 } }, "kaala": "nishita", "days": [ { "local_date": "2004-11-10", "window": { "start": { "local": "2004-11-10T23:10:59-06:00", "utc": "2004-11-11T05:10:59Z", "ms": 1100149859120.3887 }, "end": { "local": "2004-11-10T23:58:59-06:00", "utc": "2004-11-11T05:58:59Z", "ms": 1100152739120.3887 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-11-11", "window": { "start": { "local": "2004-11-11T23:11:06-06:00", "utc": "2004-11-12T05:11:06Z", "ms": 1100236266350.7778 }, "end": { "local": "2004-11-11T23:59:06-06:00", "utc": "2004-11-12T05:59:06Z", "ms": 1100239146350.7778 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 11:01 on Thu 11 Nov to 08:27 on Fri 12 Nov.", "fact": "2004-11-11T17:00:50Z → 2004-11-12T14:27:11Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:11–23:59 on the 10th, 23:11–23:59 on the 11th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 0 of 48 minutes on the 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30484 s" }, { "step": "ruling", "text": "Kālī Pūjā, Chicago, 2004: Thursday 11 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-11", "confidence": "determinate" } ], "quote": "In Chicago, Kālī Pūjā 2004 falls on Thursday 11 November. Amāvasyā runs from 11:01 on Thu 11 Nov to 08:27 on Fri 12 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9807, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2004-11-12T08:27:11-06:00", "utc": "2004-11-12T14:27:11Z", "ms": 1100269630819.647 }, "end": { "local": "2004-11-13T05:31:58-06:00", "utc": "2004-11-13T11:31:58Z", "ms": 1100345517898.908 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-12T08:27:11-06:00", "utc": "2004-11-12T14:27:11Z", "ms": 1100269630819.647 }, "end": { "local": "2004-11-13T05:31:58-06:00", "utc": "2004-11-13T11:31:58Z", "ms": 1100345517898.908 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-11-12", "window": { "start": { "local": "2004-11-12T11:10:38-06:00", "utc": "2004-11-12T17:10:38Z", "ms": 1100279437569.2954 }, "end": { "local": "2004-11-12T11:58:38-06:00", "utc": "2004-11-12T17:58:38Z", "ms": 1100282317569.2954 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-11-13", "window": { "start": { "local": "2004-11-13T11:10:47-06:00", "utc": "2004-11-13T17:10:47Z", "ms": 1100365846563.336 }, "end": { "local": "2004-11-13T11:58:47-06:00", "utc": "2004-11-13T17:58:47Z", "ms": 1100368726563.336 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 08:27 on Fri 12 Nov to 05:32 on Sat 13 Nov.", "fact": "2004-11-12T14:27:11Z → 2004-11-13T11:31:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:11–11:59 on the 12th, 11:11–11:59 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 9807 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Chicago, 2004: Friday 12 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govardhana-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-12", "confidence": "determinate" } ], "quote": "In Chicago, Govardhana Pūjā 2004 falls on Friday 12 November. Pratipadā runs from 08:27 on Fri 12 Nov to 05:32 on Sat 13 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29082, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2004-11-12T08:27:11-06:00", "utc": "2004-11-12T14:27:11Z", "ms": 1100269630819.647 }, "end": { "local": "2004-11-13T05:31:58-06:00", "utc": "2004-11-13T11:31:58Z", "ms": 1100345517898.908 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-12T08:27:11-06:00", "utc": "2004-11-12T14:27:11Z", "ms": 1100269630819.647 }, "end": { "local": "2004-11-13T05:31:58-06:00", "utc": "2004-11-13T11:31:58Z", "ms": 1100345517898.908 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-11-12", "window": { "start": { "local": "2004-11-12T16:31:53-06:00", "utc": "2004-11-12T22:31:53Z", "ms": 1100298713131.2583 }, "end": { "local": "2004-11-12T18:24:47-06:00", "utc": "2004-11-13T00:24:47Z", "ms": 1100305486808.4973 } }, "covered_min": 113, "window_min": 113, "qualifies": true }, { "local_date": "2004-11-13", "window": { "start": { "local": "2004-11-13T16:30:57-06:00", "utc": "2004-11-13T22:30:57Z", "ms": 1100385057416.12 }, "end": { "local": "2004-11-13T18:24:08-06:00", "utc": "2004-11-14T00:24:08Z", "ms": 1100391848324.8582 } }, "covered_min": 0, "window_min": 113, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 08:27 on Fri 12 Nov to 05:32 on Sat 13 Nov.", "fact": "2004-11-12T14:27:11Z → 2004-11-13T11:31:58Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:32–18:25 on the 12th, 16:31–18:24 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 113 of 113 minutes on the 12th and 0 of 113 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29082 s" }, { "step": "ruling", "text": "Bali Pūjā, Chicago, 2004: Friday 12 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-12", "confidence": "determinate" } ], "quote": "In Chicago, Bali Pūjā 2004 falls on Friday 12 November. Pratipadā runs from 08:27 on Fri 12 Nov to 05:32 on Sat 13 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3998, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2004-11-12T08:27:11-06:00", "utc": "2004-11-12T14:27:11Z", "ms": 1100269630819.647 }, "end": { "local": "2004-11-13T05:31:58-06:00", "utc": "2004-11-13T11:31:58Z", "ms": 1100345517898.908 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-12T08:27:11-06:00", "utc": "2004-11-12T14:27:11Z", "ms": 1100269630819.647 }, "end": { "local": "2004-11-13T05:31:58-06:00", "utc": "2004-11-13T11:31:58Z", "ms": 1100345517898.908 } }, "kaala": "purvahna", "days": [ { "local_date": "2004-11-12", "window": { "start": { "local": "2004-11-12T06:37:22-06:00", "utc": "2004-11-12T12:37:22Z", "ms": 1100263042007.3323 }, "end": { "local": "2004-11-12T09:55:32-06:00", "utc": "2004-11-12T15:55:32Z", "ms": 1100274932381.9744 } }, "covered_min": 88, "window_min": 198, "qualifies": true }, { "local_date": "2004-11-13", "window": { "start": { "local": "2004-11-13T06:38:36-06:00", "utc": "2004-11-13T12:38:36Z", "ms": 1100349515710.5518 }, "end": { "local": "2004-11-13T09:56:03-06:00", "utc": "2004-11-13T15:56:03Z", "ms": 1100361362945.7412 } }, "covered_min": 0, "window_min": 197, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 08:27 on Fri 12 Nov to 05:32 on Sat 13 Nov.", "fact": "2004-11-12T14:27:11Z → 2004-11-13T11:31:58Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:37–09:56 on the 12th, 06:39–09:56 on the 13th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 88 of 198 minutes on the 12th and 0 of 197 on the 13th.", "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 3998 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Chicago, 2004: Friday 12 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dyuta-pratipad", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-12", "confidence": "determinate" } ], "quote": "In Chicago, Dyūta Pratipad 2004 falls on Friday 12 November. Pratipadā runs from 08:27 on Fri 12 Nov to 05:32 on Sat 13 Nov and covers 88 of 198 minutes of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20329, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2004-11-13T05:31:58-06:00", "utc": "2004-11-13T11:31:58Z", "ms": 1100345517898.908 }, "end": { "local": "2004-11-14T02:24:19-06:00", "utc": "2004-11-14T08:24:19Z", "ms": 1100420659286.3745 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-13T05:31:58-06:00", "utc": "2004-11-13T11:31:58Z", "ms": 1100345517898.908 }, "end": { "local": "2004-11-14T02:24:19-06:00", "utc": "2004-11-14T08:24:19Z", "ms": 1100420659286.3745 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-11-13", "window": { "start": { "local": "2004-11-13T11:10:47-06:00", "utc": "2004-11-13T17:10:47Z", "ms": 1100365846563.336 }, "end": { "local": "2004-11-13T11:58:47-06:00", "utc": "2004-11-13T17:58:47Z", "ms": 1100368726563.336 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-11-14", "window": { "start": { "local": "2004-11-14T11:10:56-06:00", "utc": "2004-11-14T17:10:56Z", "ms": 1100452256405.8364 }, "end": { "local": "2004-11-14T11:58:56-06:00", "utc": "2004-11-14T17:58:56Z", "ms": 1100455136405.8364 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 05:32 on Sat 13 Nov to 02:24 on Sun 14 Nov.", "fact": "2004-11-13T11:31:58Z → 2004-11-14T08:24:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:11–11:59 on the 13th, 11:11–11:59 on the 14th.", "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 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 20329 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Chicago, 2004: Saturday 13 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dvitiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Bhratrdvitiya, Yamadvitiya (madhyahna, purvaviddha), Masyadhara (Dwat) puja (Bihar)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-11-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-13", "confidence": "determinate" } ], "quote": "In Chicago, Yama Dvitīyā (Bhai Dooj) 2004 falls on Saturday 13 November. Dvitīyā runs from 05:32 on Sat 13 Nov to 02:24 on Sun 14 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29345, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-11-14T23:13:27-06:00", "utc": "2004-11-15T05:13:27Z", "ms": 1100495606964.2185 }, "end": { "local": "2004-11-15T20:08:12-06:00", "utc": "2004-11-16T02:08:12Z", "ms": 1100570891882.6216 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-14T23:13:27-06:00", "utc": "2004-11-15T05:13:27Z", "ms": 1100495606964.2185 }, "end": { "local": "2004-11-15T20:08:12-06:00", "utc": "2004-11-16T02:08:12Z", "ms": 1100570891882.6216 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-11-14", "window": { "start": { "local": "2004-11-14T11:10:56-06:00", "utc": "2004-11-14T17:10:56Z", "ms": 1100452256405.8364 }, "end": { "local": "2004-11-14T11:58:56-06:00", "utc": "2004-11-14T17:58:56Z", "ms": 1100455136405.8364 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-11-15", "window": { "start": { "local": "2004-11-15T11:11:07-06:00", "utc": "2004-11-15T17:11:07Z", "ms": 1100538667088.7197 }, "end": { "local": "2004-11-15T11:59:07-06:00", "utc": "2004-11-15T17:59:07Z", "ms": 1100541547088.7197 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:13 on Sun 14 Nov to 20:08 on Mon 15 Nov.", "fact": "2004-11-15T05:13:27Z → 2004-11-16T02:08:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:11–11:59 on the 14th, 11:11–11:59 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29345 s" }, { "step": "ruling", "text": "Nāga Caturthī, Chicago, 2004: Monday 15 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Naga caturthi (paraviddha and madhyahnavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-15", "confidence": "determinate" } ], "quote": "In Chicago, Nāga Caturthī 2004 falls on Monday 15 November. Caturthī runs from 23:13 on Sun 14 Nov to 20:08 on Mon 15 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/vinayaka-chaturthi?on=2004-11-15", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29345, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-11-14T23:13:27-06:00", "utc": "2004-11-15T05:13:27Z", "ms": 1100495606964.2185 }, "end": { "local": "2004-11-15T20:08:12-06:00", "utc": "2004-11-16T02:08:12Z", "ms": 1100570891882.6216 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-14T23:13:27-06:00", "utc": "2004-11-15T05:13:27Z", "ms": 1100495606964.2185 }, "end": { "local": "2004-11-15T20:08:12-06:00", "utc": "2004-11-16T02:08:12Z", "ms": 1100570891882.6216 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-11-14", "window": { "start": { "local": "2004-11-14T11:10:56-06:00", "utc": "2004-11-14T17:10:56Z", "ms": 1100452256405.8364 }, "end": { "local": "2004-11-14T11:58:56-06:00", "utc": "2004-11-14T17:58:56Z", "ms": 1100455136405.8364 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-11-15", "window": { "start": { "local": "2004-11-15T11:11:07-06:00", "utc": "2004-11-15T17:11:07Z", "ms": 1100538667088.7197 }, "end": { "local": "2004-11-15T11:59:07-06:00", "utc": "2004-11-15T17:59:07Z", "ms": 1100541547088.7197 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:13 on Sun 14 Nov to 20:08 on Mon 15 Nov.", "fact": "2004-11-15T05:13:27Z → 2004-11-16T02:08:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:11–11:59 on the 14th, 11:11–11:59 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29345 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2004: Monday 15 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": "2004-11-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-15", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2004 falls on Monday 15 November. Caturthī runs from 23:13 on Sun 14 Nov to 20:08 on Mon 15 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/vinayaka-chaturthi?on=2004-11-15", "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/2004/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9984, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2004-11-16T17:16:41-06:00", "utc": "2004-11-16T23:16:41Z", "ms": 1100647001018.8655 }, "end": { "local": "2004-11-17T14:45:55-06:00", "utc": "2004-11-17T20:45:55Z", "ms": 1100724355077.9219 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-16T17:16:41-06:00", "utc": "2004-11-16T23:16:41Z", "ms": 1100647001018.8655 }, "end": { "local": "2004-11-17T14:45:55-06:00", "utc": "2004-11-17T20:45:55Z", "ms": 1100724355077.9219 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-11-16", "window": { "start": { "local": "2004-11-16T11:11:19-06:00", "utc": "2004-11-16T17:11:19Z", "ms": 1100625078603.502 }, "end": { "local": "2004-11-16T11:59:19-06:00", "utc": "2004-11-16T17:59:19Z", "ms": 1100627958603.502 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-11-17", "window": { "start": { "local": "2004-11-17T11:11:31-06:00", "utc": "2004-11-17T17:11:31Z", "ms": 1100711490941.7083 }, "end": { "local": "2004-11-17T11:59:31-06:00", "utc": "2004-11-17T17:59:31Z", "ms": 1100714370941.7083 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 17:17 on Tue 16 Nov to 14:46 on Wed 17 Nov.", "fact": "2004-11-16T23:16:41Z → 2004-11-17T20:45:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:11–11:59 on the 16th, 11:12–12:00 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9984 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Chicago, 2004: Wednesday 17 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Nadi sasthi, Skanda sasthi (Madras), Surya sasthi, Chhat (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-11-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-17", "confidence": "determinate" } ], "quote": "In Chicago, Sūrya Ṣaṣṭhī (Chhath) 2004 falls on Wednesday 17 November. Ṣaṣṭhī runs from 17:17 on Tue 16 Nov to 14:46 on Wed 17 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-19", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 289, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2004-11-18T12:41:28-06:00", "utc": "2004-11-18T18:41:28Z", "ms": 1100803287666.6543 }, "end": { "local": "2004-11-19T11:07:09-06:00", "utc": "2004-11-19T17:07:09Z", "ms": 1100884028946.5422 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-18T12:41:28-06:00", "utc": "2004-11-18T18:41:28Z", "ms": 1100803287666.6543 }, "end": { "local": "2004-11-19T11:07:09-06:00", "utc": "2004-11-19T17:07:09Z", "ms": 1100884028946.5422 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-11-18", "window": { "start": { "local": "2004-11-18T11:11:44-06:00", "utc": "2004-11-18T17:11:44Z", "ms": 1100797904095.0825 }, "end": { "local": "2004-11-18T11:59:44-06:00", "utc": "2004-11-18T17:59:44Z", "ms": 1100800784095.0825 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-11-19", "window": { "start": { "local": "2004-11-19T11:11:58-06:00", "utc": "2004-11-19T17:11:58Z", "ms": 1100884318055.5957 }, "end": { "local": "2004-11-19T11:59:58-06:00", "utc": "2004-11-19T17:59:58Z", "ms": 1100887198055.5957 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 12:41 on Thu 18 Nov to 11:07 on Fri 19 Nov.", "fact": "2004-11-18T18:41:28Z → 2004-11-19T17:07:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:12–12:00 on the 18th, 11:12–12:00 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: unstated → second-day · margin 289 s < 300 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Chicago, 2004: Friday 19 November.", "fact": "confidence: boundary (margin)" } ], "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": "2004-11-19", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-19", "confidence": "determinate" } ], "quote": "In Chicago, Gopāṣṭamī 2004 falls on Friday 19 November. Aṣṭamī runs from 12:41 on Thu 18 Nov to 11:07 on Fri 19 Nov, and reaches madhyāhna on neither day. It is 4 min 49 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-19", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 289, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2004-11-19T11:07:09-06:00", "utc": "2004-11-19T17:07:09Z", "ms": 1100884028946.5422 }, "end": { "local": "2004-11-20T10:04:58-06:00", "utc": "2004-11-20T16:04:58Z", "ms": 1100966698215.9167 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-19T11:07:09-06:00", "utc": "2004-11-19T17:07:09Z", "ms": 1100884028946.5422 }, "end": { "local": "2004-11-20T10:04:58-06:00", "utc": "2004-11-20T16:04:58Z", "ms": 1100966698215.9167 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-11-19", "window": { "start": { "local": "2004-11-19T11:11:58-06:00", "utc": "2004-11-19T17:11:58Z", "ms": 1100884318055.5957 }, "end": { "local": "2004-11-19T11:59:58-06:00", "utc": "2004-11-19T17:59:58Z", "ms": 1100887198055.5957 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-11-20", "window": { "start": { "local": "2004-11-20T11:12:13-06:00", "utc": "2004-11-20T17:12:13Z", "ms": 1100970732815.315 }, "end": { "local": "2004-11-20T12:00:13-06:00", "utc": "2004-11-20T18:00:13Z", "ms": 1100973612815.315 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 11:07 on Fri 19 Nov to 10:05 on Sat 20 Nov.", "fact": "2004-11-19T17:07:09Z → 2004-11-20T16:04:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:12–12:00 on the 19th, 11:12–12:00 on the 20th.", "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 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 289 s < 300 s" }, { "step": "ruling", "text": "Durgā Navamī, Chicago, 2004: Friday 19 November.", "fact": "confidence: boundary (margin)" } ], "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": "2004-11-19", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-19", "confidence": "determinate" } ], "quote": "In Chicago, Durgā Navamī 2004 falls on Friday 19 November. Navamī runs from 11:07 on Fri 19 Nov to 10:05 on Sat 20 Nov and covers all of madhyāhna that midday. It is 4 min 49 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 308, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2004-11-19T11:07:09-06:00", "utc": "2004-11-19T17:07:09Z", "ms": 1100884028946.5422 }, "end": { "local": "2004-11-20T10:04:58-06:00", "utc": "2004-11-20T16:04:58Z", "ms": 1100966698215.9167 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-19T11:07:09-06:00", "utc": "2004-11-19T17:07:09Z", "ms": 1100884028946.5422 }, "end": { "local": "2004-11-20T10:04:58-06:00", "utc": "2004-11-20T16:04:58Z", "ms": 1100966698215.9167 } }, "kaala": "purvahna", "days": [ { "local_date": "2004-11-19", "window": { "start": { "local": "2004-11-19T06:45:52-06:00", "utc": "2004-11-19T12:45:52Z", "ms": 1100868352423.4495 }, "end": { "local": "2004-11-19T09:59:16-06:00", "utc": "2004-11-19T15:59:16Z", "ms": 1100879956178.2136 } }, "covered_min": 0, "window_min": 193, "qualifies": false }, { "local_date": "2004-11-20", "window": { "start": { "local": "2004-11-20T06:47:04-06:00", "utc": "2004-11-20T12:47:04Z", "ms": 1100954823841.1746 }, "end": { "local": "2004-11-20T09:59:50-06:00", "utc": "2004-11-20T15:59:50Z", "ms": 1100966389823.9348 } }, "covered_min": 193, "window_min": 193, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 11:07 on Fri 19 Nov to 10:05 on Sat 20 Nov.", "fact": "2004-11-19T17:07:09Z → 2004-11-20T16:04:58Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:46–09:59 on the 19th, 06:47–10:00 on the 20th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 0 of 193 minutes on the 19th and 193 of 193 on the 20th.", "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 308 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Chicago, 2004: Saturday 20 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": "2004-11-20", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-20", "confidence": "determinate" } ], "quote": "In Chicago, Akṣaya Navamī (Amla Navami) 2004 falls on Saturday 20 November. Navamī runs from 11:07 on Fri 19 Nov to 10:05 on Sat 20 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-11-22", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10015, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-11-21T09:35:09-06:00", "utc": "2004-11-21T15:35:09Z", "ms": 1101051309457.8228 }, "end": { "local": "2004-11-22T09:36:31-06:00", "utc": "2004-11-22T15:36:31Z", "ms": 1101137790937.6685 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-21T09:35:09-06:00", "utc": "2004-11-21T15:35:09Z", "ms": 1101051309457.8228 }, "end": { "local": "2004-11-22T09:36:31-06:00", "utc": "2004-11-22T15:36:31Z", "ms": 1101137790937.6685 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-11-21", "window": { "start": { "local": "2004-11-21T06:48:15-06:00", "utc": "2004-11-21T12:48:15Z", "ms": 1101041294741.5796 }, "end": { "local": "2004-11-21T06:48:15-06:00", "utc": "2004-11-21T12:48:15Z", "ms": 1101041294741.5796 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-11-22", "window": { "start": { "local": "2004-11-22T06:49:25-06:00", "utc": "2004-11-22T12:49:25Z", "ms": 1101127765077.966 }, "end": { "local": "2004-11-22T06:49:25-06:00", "utc": "2004-11-22T12:49:25Z", "ms": 1101127765077.966 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:35 on Sun 21 Nov to 09:37 on Mon 22 Nov.", "fact": "2004-11-21T15:35:09Z → 2004-11-22T15:36:31Z" }, { "step": "kaala", "text": "Sunrise is at 06:48 on the 21st and 06:49 on the 22nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 21st and is on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10015 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Chicago, 2004: Monday 22 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": "2004-11-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-22", "confidence": "determinate" } ], "quote": "In Chicago, Prabodhinī Ekādaśī 2004 falls on Monday 22 November. Ekādaśī runs from 09:35 on Sun 21 Nov to 09:37 on Mon 22 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-11-22", "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/2004/pradosha-vrata?on=2004-11-23", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19145, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-11-23T10:06:55-06:00", "utc": "2004-11-23T16:06:55Z", "ms": 1101226015110.3345 }, "end": { "local": "2004-11-24T11:03:51-06:00", "utc": "2004-11-24T17:03:51Z", "ms": 1101315830532.8364 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-23T10:06:55-06:00", "utc": "2004-11-23T16:06:55Z", "ms": 1101226015110.3345 }, "end": { "local": "2004-11-24T11:03:51-06:00", "utc": "2004-11-24T17:03:51Z", "ms": 1101315830532.8364 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-11-23", "window": { "start": { "local": "2004-11-23T16:23:29-06:00", "utc": "2004-11-23T22:23:29Z", "ms": 1101248608811.4084 }, "end": { "local": "2004-11-23T18:19:15-06:00", "utc": "2004-11-24T00:19:15Z", "ms": 1101255554819.2954 } }, "covered_min": 116, "window_min": 116, "qualifies": true }, { "local_date": "2004-11-24", "window": { "start": { "local": "2004-11-24T16:22:55-06:00", "utc": "2004-11-24T22:22:55Z", "ms": 1101334975487.8967 }, "end": { "local": "2004-11-24T18:18:55-06:00", "utc": "2004-11-25T00:18:55Z", "ms": 1101341935053.6763 } }, "covered_min": 0, "window_min": 116, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:07 on Tue 23 Nov to 11:04 on Wed 24 Nov.", "fact": "2004-11-23T16:06:55Z → 2004-11-24T17:03:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:23–18:19 on the 23rd, 16:23–18:19 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 116 of 116 minutes on the 23rd and 0 of 116 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 19145 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2004: Tuesday 23 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": "2004-11-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-23", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2004 falls on Tuesday 23 November. Trayodaśī runs from 10:07 on Tue 23 Nov to 11:04 on Wed 24 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-11-23", "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/2004/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32835, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-11-25T12:24:46-06:00", "utc": "2004-11-25T18:24:46Z", "ms": 1101407085588.5254 }, "end": { "local": "2004-11-26T14:07:16-06:00", "utc": "2004-11-26T20:07:16Z", "ms": 1101499635651.1597 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-25T12:24:46-06:00", "utc": "2004-11-25T18:24:46Z", "ms": 1101407085588.5254 }, "end": { "local": "2004-11-26T14:07:16-06:00", "utc": "2004-11-26T20:07:16Z", "ms": 1101499635651.1597 } }, "kaala": "nishita", "days": [ { "local_date": "2004-11-25", "window": { "start": { "local": "2004-11-25T23:14:12-06:00", "utc": "2004-11-26T05:14:12Z", "ms": 1101446052107.3765 }, "end": { "local": "2004-11-26T00:02:12-06:00", "utc": "2004-11-26T06:02:12Z", "ms": 1101448932107.3765 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-11-26", "window": { "start": { "local": "2004-11-26T23:14:31-06:00", "utc": "2004-11-27T05:14:31Z", "ms": 1101532471072.3433 }, "end": { "local": "2004-11-27T00:02:31-06:00", "utc": "2004-11-27T06:02:31Z", "ms": 1101535351072.3433 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:25 on Thu 25 Nov to 14:07 on Fri 26 Nov.", "fact": "2004-11-25T18:24:46Z → 2004-11-26T20:07:16Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:14–00:02 on the 25th, 23:15–00:03 on the 26th.", "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 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: paraviddha → only-day · margin 32835 s" }, { "step": "ruling", "text": "Rāsayātrā, Chicago, 2004: Thursday 25 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": "2004-11-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-25", "confidence": "determinate" } ], "quote": "In Chicago, Rāsayātrā 2004 falls on Thursday 25 November. Pūrṇimā runs from 12:25 on Thu 25 Nov to 14:07 on Fri 26 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1387, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-11-25T12:24:46-06:00", "utc": "2004-11-25T18:24:46Z", "ms": 1101407085588.5254 }, "end": { "local": "2004-11-26T14:07:16-06:00", "utc": "2004-11-26T20:07:16Z", "ms": 1101499635651.1597 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2004-11-25T12:24:46-06:00", "utc": "2004-11-25T18:24:46Z", "ms": 1101407085588.5254 }, "end": { "local": "2004-11-26T14:07:16-06:00", "utc": "2004-11-26T20:07:16Z", "ms": 1101499635651.1597 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-11-25", "window": { "start": { "local": "2004-11-25T11:13:38-06:00", "utc": "2004-11-25T17:13:38Z", "ms": 1101402818304.8013 }, "end": { "local": "2004-11-25T12:01:38-06:00", "utc": "2004-11-25T18:01:38Z", "ms": 1101405698304.8013 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-11-26", "window": { "start": { "local": "2004-11-26T11:13:58-06:00", "utc": "2004-11-26T17:13:58Z", "ms": 1101489237672.6226 }, "end": { "local": "2004-11-26T12:01:58-06:00", "utc": "2004-11-26T18:01:58Z", "ms": 1101492117672.6226 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:25 on Thu 25 Nov to 14:07 on Fri 26 Nov.", "fact": "2004-11-25T18:24:46Z → 2004-11-26T20:07:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:14–12:02 on the 25th, 11:14–12:02 on the 26th.", "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 25th and 48 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1387 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Chicago, 2004: Friday 26 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kartiki-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rasayatra, (nisithavyapini, i.e. covering a period from 24 minutes before to 24 minutes after midnight. If occurs on two days or does not occur on any day, it is to be observed on the second day), Puskar Fair. Ratha yatra (Jain), Tripurotsava (evening), Kedara vrata (Orissa), Kartiki purnima." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-11-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-26", "confidence": "boundary" } ], "quote": "In Chicago, Kārtikī Pūrṇimā 2004 falls on Friday 26 November. Pūrṇimā runs from 12:25 on Thu 25 Nov to 14:07 on Fri 26 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/sankashta-chaturthi?on=2004-11-30", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-11-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9152, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-11-29T20:55:22-06:00", "utc": "2004-11-30T02:55:22Z", "ms": 1101783322368.1035 }, "end": { "local": "2004-11-30T23:29:34-06:00", "utc": "2004-12-01T05:29:34Z", "ms": 1101878973864.802 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-11-29T20:55:22-06:00", "utc": "2004-11-30T02:55:22Z", "ms": 1101783322368.1035 }, "end": { "local": "2004-11-30T23:29:34-06:00", "utc": "2004-12-01T05:29:34Z", "ms": 1101878973864.802 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-11-29", "window": { "start": { "local": "2004-11-29T18:22:50-06:00", "utc": "2004-11-30T00:22:50Z", "ms": 1101774170351.4275 }, "end": { "local": "2004-11-29T18:22:50-06:00", "utc": "2004-11-30T00:22:50Z", "ms": 1101774170351.4275 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-11-30", "window": { "start": { "local": "2004-11-30T19:21:16-06:00", "utc": "2004-12-01T01:21:16Z", "ms": 1101864075665.6414 }, "end": { "local": "2004-11-30T19:21:16-06:00", "utc": "2004-12-01T01:21:16Z", "ms": 1101864075665.6414 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:55 on Mon 29 Nov to 23:30 on Tue 30 Nov.", "fact": "2004-11-30T02:55:22Z → 2004-12-01T05:29:34Z" }, { "step": "kaala", "text": "Moonrise is at 18:23 on the 29th and 19:21 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 29th and is on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9152 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2004: Tuesday 30 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": "2004-11-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-11-30", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2004 falls on Tuesday 30 November. Caturthī runs from 20:55 on Mon 29 Nov to 23:30 on Tue 30 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/sankashta-chaturthi?on=2004-11-30", "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/2004/ekadashi?on=2004-12-07", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-12-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1846, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-12-07T07:41:51-06:00", "utc": "2004-12-07T13:41:51Z", "ms": 1102426910821.251 }, "end": { "local": "2004-12-08T06:35:27-06:00", "utc": "2004-12-08T12:35:27Z", "ms": 1102509327137.1824 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-12-07T07:41:51-06:00", "utc": "2004-12-07T13:41:51Z", "ms": 1102426910821.251 }, "end": { "local": "2004-12-08T06:35:27-06:00", "utc": "2004-12-08T12:35:27Z", "ms": 1102509327137.1824 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-12-07", "window": { "start": { "local": "2004-12-07T07:05:19-06:00", "utc": "2004-12-07T13:05:19Z", "ms": 1102424718514.5413 }, "end": { "local": "2004-12-07T07:05:19-06:00", "utc": "2004-12-07T13:05:19Z", "ms": 1102424718514.5413 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2004-12-08", "window": { "start": { "local": "2004-12-08T07:06:13-06:00", "utc": "2004-12-08T13:06:13Z", "ms": 1102511172853.303 }, "end": { "local": "2004-12-08T07:06:13-06:00", "utc": "2004-12-08T13:06:13Z", "ms": 1102511172853.303 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:42 on Tue 7 Dec to 06:35 on Wed 8 Dec.", "fact": "2004-12-07T13:41:51Z → 2004-12-08T12:35:27Z" }, { "step": "kaala", "text": "Sunrise is at 07:05 on the 7th and 07:06 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 7th and is not on the 8th.", "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 1846 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Chicago, 2004: Tuesday 7 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": "2004-12-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-12-07", "confidence": "determinate" } ], "quote": "In Chicago, Utpannā Ekādaśī 2004 falls on Tuesday 7 December. Ekādaśī runs from 07:42 on Tue 7 Dec to 06:35 on Wed 8 Dec, and is current at sunrise on neither day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-12-07", "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/2004/pradosha-vrata?on=2004-12-09", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-12-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28170, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-12-09T04:41:56-06:00", "utc": "2004-12-09T10:41:56Z", "ms": 1102588915625.0205 }, "end": { "local": "2004-12-10T02:07:13-06:00", "utc": "2004-12-10T08:07:13Z", "ms": 1102666032710.6003 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-12-09T04:41:56-06:00", "utc": "2004-12-09T10:41:56Z", "ms": 1102588915625.0205 }, "end": { "local": "2004-12-10T02:07:13-06:00", "utc": "2004-12-10T08:07:13Z", "ms": 1102666032710.6003 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-12-08", "window": { "start": { "local": "2004-12-08T16:19:11-06:00", "utc": "2004-12-08T22:19:11Z", "ms": 1102544351272.6028 }, "end": { "local": "2004-12-08T18:17:35-06:00", "utc": "2004-12-09T00:17:35Z", "ms": 1102551454531.5884 } }, "covered_min": 0, "window_min": 118, "qualifies": false }, { "local_date": "2004-12-09", "window": { "start": { "local": "2004-12-09T16:19:13-06:00", "utc": "2004-12-09T22:19:13Z", "ms": 1102630753165.354 }, "end": { "local": "2004-12-09T18:17:43-06:00", "utc": "2004-12-10T00:17:43Z", "ms": 1102637863015.378 } }, "covered_min": 118, "window_min": 118, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:42 on Thu 9 Dec to 02:07 on Fri 10 Dec.", "fact": "2004-12-09T10:41:56Z → 2004-12-10T08:07:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:19–18:18 on the 8th, 16:19–18:18 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 118 minutes on the 8th and 118 of 118 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 28170 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Chicago, 2004: Thursday 9 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": "2004-12-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-12-09", "confidence": "determinate" } ], "quote": "In Chicago, Kṛṣṇa Pradoṣa Vrata 2004 falls on Thursday 9 December. Trayodaśī runs from 04:42 on Thu 9 Dec to 02:07 on Fri 10 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-12-09", "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/2004/shivaratri?on=2004-12-09", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-12-09", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 1225, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2004-12-10T02:07:13-06:00", "utc": "2004-12-10T08:07:13Z", "ms": 1102666032710.6003 }, "end": { "local": "2004-12-10T22:59:37-06:00", "utc": "2004-12-11T04:59:37Z", "ms": 1102741176798.1514 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-12-10T02:07:13-06:00", "utc": "2004-12-10T08:07:13Z", "ms": 1102666032710.6003 }, "end": { "local": "2004-12-10T22:59:37-06:00", "utc": "2004-12-11T04:59:37Z", "ms": 1102741176798.1514 } }, "kaala": "nishita", "days": [ { "local_date": "2004-12-09", "window": { "start": { "local": "2004-12-09T23:19:35-06:00", "utc": "2004-12-10T05:19:35Z", "ms": 1102655975102.9438 }, "end": { "local": "2004-12-10T00:07:35-06:00", "utc": "2004-12-10T06:07:35Z", "ms": 1102658855102.9438 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-12-10", "window": { "start": { "local": "2004-12-10T23:20:02-06:00", "utc": "2004-12-11T05:20:02Z", "ms": 1102742402119.2495 }, "end": { "local": "2004-12-11T00:08:02-06:00", "utc": "2004-12-11T06:08:02Z", "ms": 1102745282119.2495 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:07 on Fri 10 Dec to 23:00 on Fri 10 Dec.", "fact": "2004-12-10T08:07:13Z → 2004-12-11T04:59:37Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:20–00:08 on the 9th, 23:20–00:08 on the 10th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither night qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 1225 s" }, { "step": "ruling", "text": "Śivarātri, Chicago, 2004: Thursday 9 December.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-12-09", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-12-09", "confidence": "boundary" } ], "quote": "In Chicago, Śivarātri 2004 falls on Thursday 9 December. Caturdaśī runs from 02:07 on Fri 10 Dec to 23:00 on Fri 10 Dec, and reaches niśītha on neither day.", "cite": "https://ahargana.org/chicago/festivals/2004/shivaratri?on=2004-12-09", "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/2004/vinayaka-chaturthi?on=2004-12-14", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-12-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10352, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-12-14T08:29:00-06:00", "utc": "2004-12-14T14:29:00Z", "ms": 1103034539977.5896 }, "end": { "local": "2004-12-15T05:16:02-06:00", "utc": "2004-12-15T11:16:02Z", "ms": 1103109361818.8533 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-12-14T08:29:00-06:00", "utc": "2004-12-14T14:29:00Z", "ms": 1103034539977.5896 }, "end": { "local": "2004-12-15T05:16:02-06:00", "utc": "2004-12-15T11:16:02Z", "ms": 1103109361818.8533 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-12-14", "window": { "start": { "local": "2004-12-14T11:21:32-06:00", "utc": "2004-12-14T17:21:32Z", "ms": 1103044892155.0444 }, "end": { "local": "2004-12-14T12:09:32-06:00", "utc": "2004-12-14T18:09:32Z", "ms": 1103047772155.0444 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-12-15", "window": { "start": { "local": "2004-12-15T11:22:02-06:00", "utc": "2004-12-15T17:22:02Z", "ms": 1103131321601.686 }, "end": { "local": "2004-12-15T12:10:02-06:00", "utc": "2004-12-15T18:10:02Z", "ms": 1103134201601.686 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:29 on Tue 14 Dec to 05:16 on Wed 15 Dec.", "fact": "2004-12-14T14:29:00Z → 2004-12-15T11:16:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 14th, 11:22–12:10 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10352 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Chicago, 2004: Tuesday 14 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": "2004-12-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-12-14", "confidence": "determinate" } ], "quote": "In Chicago, Vināyaka Caturthī 2004 falls on Tuesday 14 December. Caturthī runs from 08:29 on Tue 14 Dec to 05:16 on Wed 15 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/vinayaka-chaturthi?on=2004-12-14", "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/2004/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-12-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21960, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2004-12-15T05:16:02-06:00", "utc": "2004-12-15T11:16:02Z", "ms": 1103109361818.8533 }, "end": { "local": "2004-12-16T02:33:00-06:00", "utc": "2004-12-16T08:33:00Z", "ms": 1103185979600.2993 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-12-15T05:16:02-06:00", "utc": "2004-12-15T11:16:02Z", "ms": 1103109361818.8533 }, "end": { "local": "2004-12-16T02:33:00-06:00", "utc": "2004-12-16T08:33:00Z", "ms": 1103185979600.2993 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-12-15", "window": { "start": { "local": "2004-12-15T11:22:02-06:00", "utc": "2004-12-15T17:22:02Z", "ms": 1103131321601.686 }, "end": { "local": "2004-12-15T12:10:02-06:00", "utc": "2004-12-15T18:10:02Z", "ms": 1103134201601.686 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-12-16", "window": { "start": { "local": "2004-12-16T11:22:31-06:00", "utc": "2004-12-16T17:22:31Z", "ms": 1103217751261.6418 }, "end": { "local": "2004-12-16T12:10:31-06:00", "utc": "2004-12-16T18:10:31Z", "ms": 1103220631261.6418 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:16 on Wed 15 Dec to 02:33 on Thu 16 Dec.", "fact": "2004-12-15T11:16:02Z → 2004-12-16T08:33:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 15th, 11:23–12:11 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21960 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Chicago, 2004: Wednesday 15 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami-margashirsha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (2nd) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-12-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-12-15", "confidence": "determinate" } ], "quote": "In Chicago, Nāga Pañcamī (Mārgaśīrṣa) 2004 falls on Wednesday 15 December. Pañcamī runs from 05:16 on Wed 15 Dec to 02:33 on Thu 16 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-12-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31772, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2004-12-16T02:33:00-06:00", "utc": "2004-12-16T08:33:00Z", "ms": 1103185979600.2993 }, "end": { "local": "2004-12-17T00:27:25-06:00", "utc": "2004-12-17T06:27:25Z", "ms": 1103264845198.116 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-12-16T02:33:00-06:00", "utc": "2004-12-16T08:33:00Z", "ms": 1103185979600.2993 }, "end": { "local": "2004-12-17T00:27:25-06:00", "utc": "2004-12-17T06:27:25Z", "ms": 1103264845198.116 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-12-16", "window": { "start": { "local": "2004-12-16T11:22:31-06:00", "utc": "2004-12-16T17:22:31Z", "ms": 1103217751261.6418 }, "end": { "local": "2004-12-16T12:10:31-06:00", "utc": "2004-12-16T18:10:31Z", "ms": 1103220631261.6418 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-12-17", "window": { "start": { "local": "2004-12-17T11:23:01-06:00", "utc": "2004-12-17T17:23:01Z", "ms": 1103304181098.9727 }, "end": { "local": "2004-12-17T12:11:01-06:00", "utc": "2004-12-17T18:11:01Z", "ms": 1103307061098.9727 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:33 on Thu 16 Dec to 00:27 on Fri 17 Dec.", "fact": "2004-12-16T08:33:00Z → 2004-12-17T06:27:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 16th, 11:23–12:11 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31772 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Chicago, 2004: Thursday 16 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "champa-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "not_evaluated": "The row calls the day special with Śatabhiṣaj nakṣatra, Vyatīpāta yoga and a Sunday; none is tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-12-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-12-16", "confidence": "determinate" } ], "quote": "In Chicago, Campā Ṣaṣṭhī 2004 falls on Thursday 16 December. Ṣaṣṭhī runs from 02:33 on Thu 16 Dec to 00:27 on Fri 17 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-12-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31772, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2004-12-16T02:33:00-06:00", "utc": "2004-12-16T08:33:00Z", "ms": 1103185979600.2993 }, "end": { "local": "2004-12-17T00:27:25-06:00", "utc": "2004-12-17T06:27:25Z", "ms": 1103264845198.116 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-12-16T02:33:00-06:00", "utc": "2004-12-16T08:33:00Z", "ms": 1103185979600.2993 }, "end": { "local": "2004-12-17T00:27:25-06:00", "utc": "2004-12-17T06:27:25Z", "ms": 1103264845198.116 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-12-16", "window": { "start": { "local": "2004-12-16T11:22:31-06:00", "utc": "2004-12-16T17:22:31Z", "ms": 1103217751261.6418 }, "end": { "local": "2004-12-16T12:10:31-06:00", "utc": "2004-12-16T18:10:31Z", "ms": 1103220631261.6418 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-12-17", "window": { "start": { "local": "2004-12-17T11:23:01-06:00", "utc": "2004-12-17T17:23:01Z", "ms": 1103304181098.9727 }, "end": { "local": "2004-12-17T12:11:01-06:00", "utc": "2004-12-17T18:11:01Z", "ms": 1103307061098.9727 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:33 on Thu 16 Dec to 00:27 on Fri 17 Dec.", "fact": "2004-12-16T08:33:00Z → 2004-12-17T06:27:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 16th, 11:23–12:11 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31772 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Chicago, 2004: Thursday 16 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2004-12-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-12-16", "confidence": "determinate" } ], "quote": "In Chicago, Skanda Ṣaṣṭhī 2004 falls on Thursday 16 December. Ṣaṣṭhī runs from 02:33 on Thu 16 Dec to 00:27 on Fri 17 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-12-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39203, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2004-12-17T00:27:25-06:00", "utc": "2004-12-17T06:27:25Z", "ms": 1103264845198.116 }, "end": { "local": "2004-12-17T23:04:24-06:00", "utc": "2004-12-18T05:04:24Z", "ms": 1103346263754.8525 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-12-17T00:27:25-06:00", "utc": "2004-12-17T06:27:25Z", "ms": 1103264845198.116 }, "end": { "local": "2004-12-17T23:04:24-06:00", "utc": "2004-12-18T05:04:24Z", "ms": 1103346263754.8525 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-12-16", "window": { "start": { "local": "2004-12-16T11:22:31-06:00", "utc": "2004-12-16T17:22:31Z", "ms": 1103217751261.6418 }, "end": { "local": "2004-12-16T12:10:31-06:00", "utc": "2004-12-16T18:10:31Z", "ms": 1103220631261.6418 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2004-12-17", "window": { "start": { "local": "2004-12-17T11:23:01-06:00", "utc": "2004-12-17T17:23:01Z", "ms": 1103304181098.9727 }, "end": { "local": "2004-12-17T12:11:01-06:00", "utc": "2004-12-17T18:11:01Z", "ms": 1103307061098.9727 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 00:27 on Fri 17 Dec to 23:04 on Fri 17 Dec.", "fact": "2004-12-17T06:27:25Z → 2004-12-18T05:04:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 16th, 11:23–12:11 on the 17th.", "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 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 39203 s" }, { "step": "ruling", "text": "Mitra Saptamī, Chicago, 2004: Friday 17 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": "2004-12-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-12-17", "confidence": "determinate" } ], "quote": "In Chicago, Mitra Saptamī 2004 falls on Friday 17 December. Saptamī runs from 00:27 on Fri 17 Dec to 23:04 on Fri 17 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/ekadashi?on=2004-12-21", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-12-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24105, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2004-12-20T23:15:57-06:00", "utc": "2004-12-21T05:15:57Z", "ms": 1103606157438.6 }, "end": { "local": "2004-12-22T00:34:08-06:00", "utc": "2004-12-22T06:34:08Z", "ms": 1103697247695.875 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-12-20T23:15:57-06:00", "utc": "2004-12-21T05:15:57Z", "ms": 1103606157438.6 }, "end": { "local": "2004-12-22T00:34:08-06:00", "utc": "2004-12-22T06:34:08Z", "ms": 1103697247695.875 } }, "kaala": "sunrise", "days": [ { "local_date": "2004-12-21", "window": { "start": { "local": "2004-12-21T07:15:24-06:00", "utc": "2004-12-21T13:15:24Z", "ms": 1103634923982.821 }, "end": { "local": "2004-12-21T07:15:24-06:00", "utc": "2004-12-21T13:15:24Z", "ms": 1103634923982.821 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-12-22", "window": { "start": { "local": "2004-12-22T07:15:53-06:00", "utc": "2004-12-22T13:15:53Z", "ms": 1103721352662.711 }, "end": { "local": "2004-12-22T07:15:53-06:00", "utc": "2004-12-22T13:15:53Z", "ms": 1103721352662.711 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:16 on Mon 20 Dec to 00:34 on Wed 22 Dec.", "fact": "2004-12-21T05:15:57Z → 2004-12-22T06:34:08Z" }, { "step": "kaala", "text": "Sunrise is at 07:15 on the 21st and 07:16 on the 22nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 21st and is not on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24105 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Chicago, 2004: Tuesday 21 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": "2004-12-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-12-21", "confidence": "determinate" } ], "quote": "In Chicago, Mokṣadā Ekādaśī 2004 falls on Tuesday 21 December. Ekādaśī runs from 23:16 on Mon 20 Dec to 00:34 on Wed 22 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/ekadashi?on=2004-12-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/chicago/festivals/2004/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-12-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32843, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2004-12-22T00:34:08-06:00", "utc": "2004-12-22T06:34:08Z", "ms": 1103697247695.875 }, "end": { "local": "2004-12-23T02:18:39-06:00", "utc": "2004-12-23T08:18:39Z", "ms": 1103789918909.036 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-12-22T00:34:08-06:00", "utc": "2004-12-22T06:34:08Z", "ms": 1103697247695.875 }, "end": { "local": "2004-12-23T02:18:39-06:00", "utc": "2004-12-23T08:18:39Z", "ms": 1103789918909.036 } }, "kaala": "madhyahna", "days": [ { "local_date": "2004-12-22", "window": { "start": { "local": "2004-12-22T11:25:32-06:00", "utc": "2004-12-22T17:25:32Z", "ms": 1103736331757.7593 }, "end": { "local": "2004-12-22T12:13:32-06:00", "utc": "2004-12-22T18:13:32Z", "ms": 1103739211757.7593 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2004-12-23", "window": { "start": { "local": "2004-12-23T11:26:02-06:00", "utc": "2004-12-23T17:26:02Z", "ms": 1103822761955.7793 }, "end": { "local": "2004-12-23T12:14:02-06:00", "utc": "2004-12-23T18:14:02Z", "ms": 1103825641955.7793 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 00:34 on Wed 22 Dec to 02:19 on Thu 23 Dec.", "fact": "2004-12-22T06:34:08Z → 2004-12-23T08:18:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 22nd, 11:26–12:14 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32843 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Chicago, 2004: Wednesday 22 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": "2004-12-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-12-22", "confidence": "determinate" } ], "quote": "In Chicago, Akhaṇḍa Dvādaśī 2004 falls on Wednesday 22 December. Dvādaśī runs from 00:34 on Wed 22 Dec to 02:19 on Thu 23 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/pradosha-vrata?on=2004-12-23", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-12-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28583, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2004-12-23T02:18:39-06:00", "utc": "2004-12-23T08:18:39Z", "ms": 1103789918909.036 }, "end": { "local": "2004-12-24T04:22:37-06:00", "utc": "2004-12-24T10:22:37Z", "ms": 1103883757157.0208 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-12-23T02:18:39-06:00", "utc": "2004-12-23T08:18:39Z", "ms": 1103789918909.036 }, "end": { "local": "2004-12-24T04:22:37-06:00", "utc": "2004-12-24T10:22:37Z", "ms": 1103883757157.0208 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-12-22", "window": { "start": { "local": "2004-12-22T16:23:11-06:00", "utc": "2004-12-22T22:23:11Z", "ms": 1103754190852.8076 }, "end": { "local": "2004-12-22T18:22:16-06:00", "utc": "2004-12-23T00:22:16Z", "ms": 1103761335964.4595 } }, "covered_min": 0, "window_min": 119, "qualifies": false }, { "local_date": "2004-12-23", "window": { "start": { "local": "2004-12-23T16:23:45-06:00", "utc": "2004-12-23T22:23:45Z", "ms": 1103840624721.3616 }, "end": { "local": "2004-12-23T18:22:49-06:00", "utc": "2004-12-24T00:22:49Z", "ms": 1103847768563.6018 } }, "covered_min": 119, "window_min": 119, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:19 on Thu 23 Dec to 04:23 on Fri 24 Dec.", "fact": "2004-12-23T08:18:39Z → 2004-12-24T10:22:37Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:23–18:22 on the 22nd, 16:24–18:23 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 119 minutes on the 22nd and 119 of 119 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 28583 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Chicago, 2004: Thursday 23 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": "2004-12-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-12-23", "confidence": "determinate" } ], "quote": "In Chicago, Śukla Pradoṣa Vrata 2004 falls on Thursday 23 December. Trayodaśī runs from 02:19 on Thu 23 Dec to 04:23 on Fri 24 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/pradosha-vrata?on=2004-12-23", "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/2004/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-12-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26359, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2004-12-25T06:40:06-06:00", "utc": "2004-12-25T12:40:06Z", "ms": 1103978406177.2812 }, "end": { "local": "2004-12-26T09:06:20-06:00", "utc": "2004-12-26T15:06:20Z", "ms": 1104073580095.381 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-12-25T06:40:06-06:00", "utc": "2004-12-25T12:40:06Z", "ms": 1103978406177.2812 }, "end": { "local": "2004-12-26T09:06:20-06:00", "utc": "2004-12-26T15:06:20Z", "ms": 1104073580095.381 } }, "kaala": "pradosha", "days": [ { "local_date": "2004-12-25", "window": { "start": { "local": "2004-12-25T16:24:59-06:00", "utc": "2004-12-25T22:24:59Z", "ms": 1104013498648.749 }, "end": { "local": "2004-12-25T18:23:58-06:00", "utc": "2004-12-26T00:23:58Z", "ms": 1104020638242.031 } }, "covered_min": 119, "window_min": 119, "qualifies": true }, { "local_date": "2004-12-26", "window": { "start": { "local": "2004-12-26T16:25:39-06:00", "utc": "2004-12-26T22:25:39Z", "ms": 1104099938631.5798 }, "end": { "local": "2004-12-26T18:24:35-06:00", "utc": "2004-12-27T00:24:35Z", "ms": 1104107075249.69 } }, "covered_min": 0, "window_min": 119, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:40 on Sat 25 Dec to 09:06 on Sun 26 Dec.", "fact": "2004-12-25T12:40:06Z → 2004-12-26T15:06:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:25–18:24 on the 25th, 16:26–18:25 on the 26th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 119 of 119 minutes on the 25th and 0 of 119 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 26359 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Chicago, 2004: Saturday 25 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": "2004-12-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-12-25", "confidence": "determinate" } ], "quote": "In Chicago, Dattātreyotpatti (Datta Jayanti) 2004 falls on Saturday 25 December. Pūrṇimā runs from 06:40 on Sat 25 Dec to 09:06 on Sun 26 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/chicago/festivals/2004/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/2004/sankashta-chaturthi?on=2004-12-29", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "4887398", "year": 2004, "local_date": "2004-12-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5141, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2004-12-29T16:37:40-06:00", "utc": "2004-12-29T22:37:40Z", "ms": 1104359860238.5745 }, "end": { "local": "2004-12-30T18:56:14-06:00", "utc": "2004-12-31T00:56:14Z", "ms": 1104454573538.583 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2004-12-29T16:37:40-06:00", "utc": "2004-12-29T22:37:40Z", "ms": 1104359860238.5745 }, "end": { "local": "2004-12-30T18:56:14-06:00", "utc": "2004-12-31T00:56:14Z", "ms": 1104454573538.583 } }, "kaala": "moonrise", "days": [ { "local_date": "2004-12-29", "window": { "start": { "local": "2004-12-29T19:18:14-06:00", "utc": "2004-12-30T01:18:14Z", "ms": 1104369494310.3037 }, "end": { "local": "2004-12-29T19:18:14-06:00", "utc": "2004-12-30T01:18:14Z", "ms": 1104369494310.3037 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2004-12-30", "window": { "start": { "local": "2004-12-30T20:21:55-06:00", "utc": "2004-12-31T02:21:55Z", "ms": 1104459714959.0386 }, "end": { "local": "2004-12-30T20:21:55-06:00", "utc": "2004-12-31T02:21:55Z", "ms": 1104459714959.0386 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:38 on Wed 29 Dec to 18:56 on Thu 30 Dec.", "fact": "2004-12-29T22:37:40Z → 2004-12-31T00:56:14Z" }, { "step": "kaala", "text": "Moonrise is at 19:18 on the 29th and 20:22 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 29th and is not on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5141 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Chicago, 2004: Wednesday 29 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": "2004-12-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2004-12-29", "confidence": "determinate" } ], "quote": "In Chicago, Saṅkaṣṭa Caturthī 2004 falls on Wednesday 29 December. Caturthī runs from 16:38 on Wed 29 Dec to 18:56 on Thu 30 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/chicago/festivals/2004/sankashta-chaturthi?on=2004-12-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } } ], "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }