{ "id": "/medan/festivals/1998", "place": { "id": "1214520", "slug": "medan", "name": "Medan", "region": "North Sumatra, Indonesia", "country": "ID", "lat": 3.58333, "lon": 98.66667, "elevation_m": 26, "tz": "Asia/Jakarta" }, "year": 1998, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/medan/festivals/1998/vinayaka-chaturthi?on=1998-01-02", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13234, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-01-01T18:40:08+07:00", "utc": "1998-01-01T11:40:08Z", "ms": 883654808055.4141 }, "end": { "local": "1998-01-02T16:33:46+07:00", "utc": "1998-01-02T09:33:46Z", "ms": 883733625708.3112 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-01-01T18:40:08+07:00", "utc": "1998-01-01T11:40:08Z", "ms": 883654808055.4141 }, "end": { "local": "1998-01-02T16:33:46+07:00", "utc": "1998-01-02T09:33:46Z", "ms": 883733625708.3112 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-01-01", "window": { "start": { "local": "1998-01-01T12:04:44+07:00", "utc": "1998-01-01T05:04:44Z", "ms": 883631083741.2795 }, "end": { "local": "1998-01-01T12:52:44+07:00", "utc": "1998-01-01T05:52:44Z", "ms": 883633963741.2795 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-01-02", "window": { "start": { "local": "1998-01-02T12:05:12+07:00", "utc": "1998-01-02T05:05:12Z", "ms": 883717512083.4061 }, "end": { "local": "1998-01-02T12:53:12+07:00", "utc": "1998-01-02T05:53:12Z", "ms": 883720392083.4061 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:40 on Thu 1 Jan to 16:34 on Fri 2 Jan.", "fact": "1998-01-01T11:40:08Z → 1998-01-02T09:33:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:05–12:53 on the 1st, 12:05–12:53 on the 2nd.", "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 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13234 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Medan, 1998: Friday 2 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-01-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-02", "confidence": "determinate" } ], "quote": "In Medan, Vināyaka Caturthī 1998 falls on Friday 2 January. Caturthī runs from 18:40 on Thu 1 Jan to 16:34 on Fri 2 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/vinayaka-chaturthi?on=1998-01-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ekadashi?on=1998-01-08", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6287, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-01-08T04:49:30+07:00", "utc": "1998-01-07T21:49:30Z", "ms": 884209770012.2968 }, "end": { "local": "1998-01-09T03:19:06+07:00", "utc": "1998-01-08T20:19:06Z", "ms": 884290745666.4689 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-01-08T04:49:30+07:00", "utc": "1998-01-07T21:49:30Z", "ms": 884209770012.2968 }, "end": { "local": "1998-01-09T03:19:06+07:00", "utc": "1998-01-08T20:19:06Z", "ms": 884290745666.4689 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-01-08", "window": { "start": { "local": "1998-01-08T06:34:17+07:00", "utc": "1998-01-07T23:34:17Z", "ms": 884216056790.1486 }, "end": { "local": "1998-01-08T06:34:17+07:00", "utc": "1998-01-07T23:34:17Z", "ms": 884216056790.1486 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-01-09", "window": { "start": { "local": "1998-01-09T06:34:40+07:00", "utc": "1998-01-08T23:34:40Z", "ms": 884302479908.6154 }, "end": { "local": "1998-01-09T06:34:40+07:00", "utc": "1998-01-08T23:34:40Z", "ms": 884302479908.6154 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:50 on Thu 8 Jan to 03:19 on Fri 9 Jan.", "fact": "1998-01-07T21:49:30Z → 1998-01-08T20:19:06Z" }, { "step": "kaala", "text": "Sunrise is at 06:34 on the 8th and 06:35 on the 9th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 8th and is not on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6287 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Medan, 1998: Thursday 8 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": "1998-01-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-08", "confidence": "determinate" } ], "quote": "In Medan, Putradā Ekādaśī 1998 falls on Thursday 8 January. Ekādaśī runs from 04:50 on Thu 8 Jan to 03:19 on Fri 9 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-01-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-01-10", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17870, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-01-10T02:02:49+07:00", "utc": "1998-01-09T19:02:49Z", "ms": 884372569300.5115 }, "end": { "local": "1998-01-11T01:04:54+07:00", "utc": "1998-01-10T18:04:54Z", "ms": 884455493726.7694 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-01-10T02:02:49+07:00", "utc": "1998-01-09T19:02:49Z", "ms": 884372569300.5115 }, "end": { "local": "1998-01-11T01:04:54+07:00", "utc": "1998-01-10T18:04:54Z", "ms": 884455493726.7694 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-01-09", "window": { "start": { "local": "1998-01-09T18:29:57+07:00", "utc": "1998-01-09T11:29:57Z", "ms": 884345397414.1654 }, "end": { "local": "1998-01-09T20:06:38+07:00", "utc": "1998-01-09T13:06:38Z", "ms": 884351198074.5406 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "1998-01-10", "window": { "start": { "local": "1998-01-10T18:30:24+07:00", "utc": "1998-01-10T11:30:24Z", "ms": 884431824228.3932 }, "end": { "local": "1998-01-10T20:07:04+07:00", "utc": "1998-01-10T13:07:04Z", "ms": 884437624217.437 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:03 on Sat 10 Jan to 01:05 on Sun 11 Jan.", "fact": "1998-01-09T19:02:49Z → 1998-01-10T18:04:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:30–20:07 on the 9th, 18:30–20:07 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 0 of 97 minutes on the 9th and 97 of 97 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 17870 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Medan, 1998: Saturday 10 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": "1998-01-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-10", "confidence": "determinate" } ], "quote": "In Medan, Śukla Pradoṣa Vrata 1998 falls on Saturday 10 January. Trayodaśī runs from 02:03 on Sat 10 Jan to 01:05 on Sun 11 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-01-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22519, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1998-01-14T12:16:48+07:00", "utc": "1998-01-14T05:16:48Z", "ms": 884755007700.2345 }, "end": { "local": "1998-02-13T01:14:49+07:00", "utc": "1998-02-12T18:14:49Z", "ms": 887307289013.9515 } }, "span": { "of": "transit", "start": { "local": "1998-01-14T12:16:48+07:00", "utc": "1998-01-14T05:16:48Z", "ms": 884755007700.2345 }, "end": { "local": "1998-01-14T12:16:48+07:00", "utc": "1998-01-14T05:16:48Z", "ms": 884755007700.2345 } }, "kaala": "sunset-day", "days": [ { "local_date": "1998-01-14", "window": { "start": { "local": "1998-01-13T18:31:42+07:00", "utc": "1998-01-13T11:31:42Z", "ms": 884691101791.5847 }, "end": { "local": "1998-01-14T18:32:07+07:00", "utc": "1998-01-14T11:32:07Z", "ms": 884777526621.4899 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1998-01-15", "window": { "start": { "local": "1998-01-14T18:32:07+07:00", "utc": "1998-01-14T11:32:07Z", "ms": 884777526621.4899 }, "end": { "local": "1998-01-15T18:32:31+07:00", "utc": "1998-01-15T11:32:31Z", "ms": 884863950908.8541 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1998-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 12:17 on Wed 14 Jan.", "fact": "1998-01-14T05:16:48Z · 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 18:32, and the day of the 15th ends at 18:33.", "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 22519 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, Medan, 1998: 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": "1998-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1998-01-13", "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": "1998-01-13", "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 Medan, Bhogi 1998 falls on Tuesday 13 January. It is kept the day before Pongal, which falls on Wednesday 14 January. The Sun enters Makara at 12:17 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/medan/festivals/1998/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": "/medan/festivals/1998/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22519, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1998-01-14T12:16:48+07:00", "utc": "1998-01-14T05:16:48Z", "ms": 884755007700.2345 }, "end": { "local": "1998-02-13T01:14:49+07:00", "utc": "1998-02-12T18:14:49Z", "ms": 887307289013.9515 } }, "span": { "of": "transit", "start": { "local": "1998-01-14T12:16:48+07:00", "utc": "1998-01-14T05:16:48Z", "ms": 884755007700.2345 }, "end": { "local": "1998-01-14T12:16:48+07:00", "utc": "1998-01-14T05:16:48Z", "ms": 884755007700.2345 } }, "kaala": "sunset-day", "days": [ { "local_date": "1998-01-14", "window": { "start": { "local": "1998-01-13T18:31:42+07:00", "utc": "1998-01-13T11:31:42Z", "ms": 884691101791.5847 }, "end": { "local": "1998-01-14T18:32:07+07:00", "utc": "1998-01-14T11:32:07Z", "ms": 884777526621.4899 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1998-01-15", "window": { "start": { "local": "1998-01-14T18:32:07+07:00", "utc": "1998-01-14T11:32:07Z", "ms": 884777526621.4899 }, "end": { "local": "1998-01-15T18:32:31+07:00", "utc": "1998-01-15T11:32:31Z", "ms": 884863950908.8541 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 12:17 on Wed 14 Jan.", "fact": "1998-01-14T05:16:48Z · 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 18:32, and the day of the 15th ends at 18:33.", "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 22519 s" }, { "step": "ruling", "text": "Pongal, Medan, 1998: 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": "1998-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1998-01-14", "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": "1998-01-14", "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 Medan, Pongal 1998 falls on Wednesday 14 January. The Sun enters Makara at 12:17 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/medan/festivals/1998/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": "/medan/festivals/1998/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 42192, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1998-01-14T12:16:48+07:00", "utc": "1998-01-14T05:16:48Z", "ms": 884755007700.2345 }, "end": { "local": "1998-02-13T01:14:49+07:00", "utc": "1998-02-12T18:14:49Z", "ms": 887307289013.9515 } }, "span": { "of": "transit", "start": { "local": "1998-01-14T12:16:48+07:00", "utc": "1998-01-14T05:16:48Z", "ms": 884755007700.2345 }, "end": { "local": "1998-01-14T12:16:48+07:00", "utc": "1998-01-14T05:16:48Z", "ms": 884755007700.2345 } }, "kaala": "civil-day", "days": [ { "local_date": "1998-01-14", "window": { "start": { "local": "1998-01-14T00:00:00+07:00", "utc": "1998-01-13T17:00:00Z", "ms": 884710800000 }, "end": { "local": "1998-01-15T00:00:00+07:00", "utc": "1998-01-14T17:00:00Z", "ms": 884797200000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1998-01-15", "window": { "start": { "local": "1998-01-15T00:00:00+07:00", "utc": "1998-01-14T17:00:00Z", "ms": 884797200000 }, "end": { "local": "1998-01-16T00:00:00+07:00", "utc": "1998-01-15T17:00:00Z", "ms": 884883600000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 12:17 on Wed 14 Jan.", "fact": "1998-01-14T05:16:48Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Medan.", "fact": "civil-day: midnight-to-midnight · Asia/Jakarta" }, { "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 42192 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Medan, 1998: 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": "1998-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1998-01-14", "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": "1998-01-14", "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 Medan, Makara Saṅkrānti 1998 falls on Wednesday 14 January. The Sun enters Makara at 12:17 on Wed 14 Jan, and the rule counts the day from midnight.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22519, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1998-01-14T12:16:48+07:00", "utc": "1998-01-14T05:16:48Z", "ms": 884755007700.2345 }, "end": { "local": "1998-02-13T01:14:49+07:00", "utc": "1998-02-12T18:14:49Z", "ms": 887307289013.9515 } }, "span": { "of": "transit", "start": { "local": "1998-01-14T12:16:48+07:00", "utc": "1998-01-14T05:16:48Z", "ms": 884755007700.2345 }, "end": { "local": "1998-01-14T12:16:48+07:00", "utc": "1998-01-14T05:16:48Z", "ms": 884755007700.2345 } }, "kaala": "sunset-day", "days": [ { "local_date": "1998-01-14", "window": { "start": { "local": "1998-01-13T18:31:42+07:00", "utc": "1998-01-13T11:31:42Z", "ms": 884691101791.5847 }, "end": { "local": "1998-01-14T18:32:07+07:00", "utc": "1998-01-14T11:32:07Z", "ms": 884777526621.4899 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "1998-01-15", "window": { "start": { "local": "1998-01-14T18:32:07+07:00", "utc": "1998-01-14T11:32:07Z", "ms": 884777526621.4899 }, "end": { "local": "1998-01-15T18:32:31+07:00", "utc": "1998-01-15T11:32:31Z", "ms": 884863950908.8541 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1998-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 12:17 on Wed 14 Jan.", "fact": "1998-01-14T05:16:48Z · 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 18:32, and the day of the 15th ends at 18:33.", "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 22519 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, Medan, 1998: 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": "1998-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1998-01-15", "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": "1998-01-15", "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 Medan, Mattu Pongal 1998 falls on Thursday 15 January. It is kept the day after Pongal, which falls on Wednesday 14 January. The Sun enters Makara at 12:17 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/medan/festivals/1998/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": "/medan/festivals/1998/sankashta-chaturthi?on=1998-01-16", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24201, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-01-16T03:27:37+07:00", "utc": "1998-01-15T20:27:37Z", "ms": 884896057474.9648 }, "end": { "local": "1998-01-17T05:35:34+07:00", "utc": "1998-01-16T22:35:34Z", "ms": 884990133576.6034 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-01-16T03:27:37+07:00", "utc": "1998-01-15T20:27:37Z", "ms": 884896057474.9648 }, "end": { "local": "1998-01-17T05:35:34+07:00", "utc": "1998-01-16T22:35:34Z", "ms": 884990133576.6034 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-01-15", "window": { "start": { "local": "1998-01-15T20:44:17+07:00", "utc": "1998-01-15T13:44:17Z", "ms": 884871856761.9233 }, "end": { "local": "1998-01-15T20:44:17+07:00", "utc": "1998-01-15T13:44:17Z", "ms": 884871856761.9233 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-01-16", "window": { "start": { "local": "1998-01-16T21:29:51+07:00", "utc": "1998-01-16T14:29:51Z", "ms": 884960991410.2725 }, "end": { "local": "1998-01-16T21:29:51+07:00", "utc": "1998-01-16T14:29:51Z", "ms": 884960991410.2725 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:28 on Fri 16 Jan to 05:36 on Sat 17 Jan.", "fact": "1998-01-15T20:27:37Z → 1998-01-16T22:35:34Z" }, { "step": "kaala", "text": "Moonrise is at 20:44 on the 15th and 21:30 on the 16th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 15th and is on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24201 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Medan, 1998: Friday 16 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": "1998-01-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-16", "confidence": "determinate" } ], "quote": "In Medan, Saṅkaṣṭa Caturthī 1998 falls on Friday 16 January. Caturthī runs from 03:28 on Fri 16 Jan to 05:36 on Sat 17 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/sankashta-chaturthi?on=1998-01-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ekadashi?on=1998-01-24", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 42372, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-01-23T18:36:11+07:00", "utc": "1998-01-23T11:36:11Z", "ms": 885555371121.6476 }, "end": { "local": "1998-01-24T18:52:57+07:00", "utc": "1998-01-24T11:52:57Z", "ms": 885642777132.4196 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-01-23T18:36:11+07:00", "utc": "1998-01-23T11:36:11Z", "ms": 885555371121.6476 }, "end": { "local": "1998-01-24T18:52:57+07:00", "utc": "1998-01-24T11:52:57Z", "ms": 885642777132.4196 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-01-24", "window": { "start": { "local": "1998-01-24T06:38:59+07:00", "utc": "1998-01-23T23:38:59Z", "ms": 885598738677.0367 }, "end": { "local": "1998-01-24T06:38:59+07:00", "utc": "1998-01-23T23:38:59Z", "ms": 885598738677.0367 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-01-25", "window": { "start": { "local": "1998-01-25T06:39:09+07:00", "utc": "1998-01-24T23:39:09Z", "ms": 885685149481.8086 }, "end": { "local": "1998-01-25T06:39:09+07:00", "utc": "1998-01-24T23:39:09Z", "ms": 885685149481.8086 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:36 on Fri 23 Jan to 18:53 on Sat 24 Jan.", "fact": "1998-01-23T11:36:11Z → 1998-01-24T11:52:57Z" }, { "step": "kaala", "text": "Sunrise is at 06:39 on the 24th and 06:39 on the 25th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 24th and is not on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 42372 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Medan, 1998: Saturday 24 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": "1998-01-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-24", "confidence": "determinate" } ], "quote": "In Medan, Ṣaṭtilā Ekādaśī 1998 falls on Saturday 24 January. Ekādaśī runs from 18:36 on Fri 23 Jan to 18:53 on Sat 24 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-01-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-01-25", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 796, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-01-25T18:22:45+07:00", "utc": "1998-01-25T11:22:45Z", "ms": 885727364850.8756 }, "end": { "local": "1998-01-26T17:09:25+07:00", "utc": "1998-01-26T10:09:25Z", "ms": 885809364677.783 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-01-25T18:22:45+07:00", "utc": "1998-01-25T11:22:45Z", "ms": 885727364850.8756 }, "end": { "local": "1998-01-26T17:09:25+07:00", "utc": "1998-01-26T10:09:25Z", "ms": 885809364677.783 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-01-25", "window": { "start": { "local": "1998-01-25T18:36:00+07:00", "utc": "1998-01-25T11:36:00Z", "ms": 885728160445.9886 }, "end": { "local": "1998-01-25T20:12:27+07:00", "utc": "1998-01-25T13:12:27Z", "ms": 885733946976.455 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1998-01-26", "window": { "start": { "local": "1998-01-26T18:36:18+07:00", "utc": "1998-01-26T11:36:18Z", "ms": 885814577755.8903 }, "end": { "local": "1998-01-26T20:12:43+07:00", "utc": "1998-01-26T13:12:43Z", "ms": 885820363188.0312 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:23 on Sun 25 Jan to 17:09 on Mon 26 Jan.", "fact": "1998-01-25T11:22:45Z → 1998-01-26T10:09:25Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:36–20:12 on the 25th, 18:36–20:13 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 96 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 796 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Medan, 1998: Sunday 25 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": "1998-01-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-25", "confidence": "determinate" } ], "quote": "In Medan, Kṛṣṇa Pradoṣa Vrata 1998 falls on Sunday 25 January. Trayodaśī runs from 18:23 on Sun 25 Jan to 17:09 on Mon 26 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-01-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/shivaratri?on=1998-01-26", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25468, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-01-26T17:09:25+07:00", "utc": "1998-01-26T10:09:25Z", "ms": 885809364677.783 }, "end": { "local": "1998-01-27T15:19:26+07:00", "utc": "1998-01-27T08:19:26Z", "ms": 885889165919.7421 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-01-26T17:09:25+07:00", "utc": "1998-01-26T10:09:25Z", "ms": 885809364677.783 }, "end": { "local": "1998-01-27T15:19:26+07:00", "utc": "1998-01-27T08:19:26Z", "ms": 885889165919.7421 } }, "kaala": "nishita", "days": [ { "local_date": "1998-01-26", "window": { "start": { "local": "1998-01-27T00:13:53+07:00", "utc": "1998-01-26T17:13:53Z", "ms": 885834833126.4187 }, "end": { "local": "1998-01-27T01:01:53+07:00", "utc": "1998-01-26T18:01:53Z", "ms": 885837713126.4187 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-01-27", "window": { "start": { "local": "1998-01-28T00:14:06+07:00", "utc": "1998-01-27T17:14:06Z", "ms": 885921245521.7263 }, "end": { "local": "1998-01-28T01:02:06+07:00", "utc": "1998-01-27T18:02:06Z", "ms": 885924125521.7263 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:09 on Mon 26 Jan to 15:19 on Tue 27 Jan.", "fact": "1998-01-26T10:09:25Z → 1998-01-27T08:19:26Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:14–01:02 on the 26th, 00:14–01:02 on the 27th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 26th and 0 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25468 s" }, { "step": "ruling", "text": "Śivarātri, Medan, 1998: Monday 26 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": "1998-01-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-26", "confidence": "determinate" } ], "quote": "In Medan, Śivarātri 1998 falls on Monday 26 January. Caturdaśī runs from 17:09 on Mon 26 Jan to 15:19 on Tue 27 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/shivaratri?on=1998-01-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31197, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-01-26T17:09:25+07:00", "utc": "1998-01-26T10:09:25Z", "ms": 885809364677.783 }, "end": { "local": "1998-01-27T15:19:26+07:00", "utc": "1998-01-27T08:19:26Z", "ms": 885889165919.7421 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-01-26T17:09:25+07:00", "utc": "1998-01-26T10:09:25Z", "ms": 885809364677.783 }, "end": { "local": "1998-01-27T15:19:26+07:00", "utc": "1998-01-27T08:19:26Z", "ms": 885889165919.7421 } }, "kaala": "arunodaya", "days": [ { "local_date": "1998-01-26", "window": { "start": { "local": "1998-01-26T05:02:53+07:00", "utc": "1998-01-25T22:02:53Z", "ms": 885765772894.0198 }, "end": { "local": "1998-01-26T06:39:19+07:00", "utc": "1998-01-25T23:39:19Z", "ms": 885771559424.4861 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "1998-01-27", "window": { "start": { "local": "1998-01-27T05:03:03+07:00", "utc": "1998-01-26T22:03:03Z", "ms": 885852183064.8063 }, "end": { "local": "1998-01-27T06:39:28+07:00", "utc": "1998-01-26T23:39:28Z", "ms": 885857968496.9473 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:09 on Mon 26 Jan to 15:19 on Tue 27 Jan.", "fact": "1998-01-26T10:09:25Z → 1998-01-27T08:19:26Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:03–06:39 on the 26th, 05:03–06:39 on the 27th.", "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 96 minutes on the 26th and 96 of 96 on the 27th.", "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 31197 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Medan, 1998: Tuesday 27 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": "1998-01-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-27", "confidence": "determinate" } ], "quote": "In Medan, Yama Tarpaṇa 1998 falls on Tuesday 27 January. Caturdaśī runs from 17:09 on Mon 26 Jan to 15:19 on Tue 27 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27309, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-01-31T04:39:36+07:00", "utc": "1998-01-30T21:39:36Z", "ms": 886196375689.5344 }, "end": { "local": "1998-02-01T01:50:52+07:00", "utc": "1998-01-31T18:50:52Z", "ms": 886272652199.3063 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-01-31T04:39:36+07:00", "utc": "1998-01-30T21:39:36Z", "ms": 886196375689.5344 }, "end": { "local": "1998-02-01T01:50:52+07:00", "utc": "1998-01-31T18:50:52Z", "ms": 886272652199.3063 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-01-31", "window": { "start": { "local": "1998-01-31T12:14:45+07:00", "utc": "1998-01-31T05:14:45Z", "ms": 886223684652.7412 }, "end": { "local": "1998-01-31T13:02:45+07:00", "utc": "1998-01-31T06:02:45Z", "ms": 886226564652.7412 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-02-01", "window": { "start": { "local": "1998-02-01T12:14:53+07:00", "utc": "1998-02-01T05:14:53Z", "ms": 886310093393.26 }, "end": { "local": "1998-02-01T13:02:53+07:00", "utc": "1998-02-01T06:02:53Z", "ms": 886312973393.26 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:40 on Sat 31 Jan to 01:51 on Sun 1 Feb.", "fact": "1998-01-30T21:39:36Z → 1998-01-31T18:50:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:15–13:03 on the 31st, 12:15–13:03 on the 1st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 31st and 0 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 27309 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Medan, 1998: Saturday 31 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": "1998-01-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-31", "confidence": "determinate" } ], "quote": "In Medan, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1998 falls on Saturday 31 January. Caturthī runs from 04:40 on Sat 31 Jan to 01:51 on Sun 1 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-01-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20219, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-01-31T04:39:36+07:00", "utc": "1998-01-30T21:39:36Z", "ms": 886196375689.5344 }, "end": { "local": "1998-02-01T01:50:52+07:00", "utc": "1998-01-31T18:50:52Z", "ms": 886272652199.3063 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-01-31T04:39:36+07:00", "utc": "1998-01-30T21:39:36Z", "ms": 886196375689.5344 }, "end": { "local": "1998-02-01T01:50:52+07:00", "utc": "1998-01-31T18:50:52Z", "ms": 886272652199.3063 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-01-30", "window": { "start": { "local": "1998-01-30T18:37:20+07:00", "utc": "1998-01-30T11:37:20Z", "ms": 886160239743.2394 }, "end": { "local": "1998-01-30T20:13:41+07:00", "utc": "1998-01-30T13:13:41Z", "ms": 886166020568.4478 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "1998-01-31", "window": { "start": { "local": "1998-01-31T18:37:33+07:00", "utc": "1998-01-31T11:37:33Z", "ms": 886246653373.1805 }, "end": { "local": "1998-01-31T20:13:53+07:00", "utc": "1998-01-31T13:13:53Z", "ms": 886252432996.3157 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:40 on Sat 31 Jan to 01:51 on Sun 1 Feb.", "fact": "1998-01-30T21:39:36Z → 1998-01-31T18:50:52Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:37–20:14 on the 30th, 18:38–20:14 on the 31st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 0 of 96 minutes on the 30th and 96 of 96 on the 31st.", "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 20219 s" }, { "step": "ruling", "text": "Tila Caturthī, Medan, 1998: Saturday 31 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": "1998-01-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-01-31", "confidence": "determinate" } ], "quote": "In Medan, Tila Caturthī 1998 falls on Saturday 31 January. Caturthī runs from 04:40 on Sat 31 Jan to 01:51 on Sun 1 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-02-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36584, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1998-02-01T01:50:52+07:00", "utc": "1998-01-31T18:50:52Z", "ms": 886272652199.3063 }, "end": { "local": "1998-02-01T23:12:37+07:00", "utc": "1998-02-01T16:12:37Z", "ms": 886349557379.0338 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-02-01T01:50:52+07:00", "utc": "1998-01-31T18:50:52Z", "ms": 886272652199.3063 }, "end": { "local": "1998-02-01T23:12:37+07:00", "utc": "1998-02-01T16:12:37Z", "ms": 886349557379.0338 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-01-31", "window": { "start": { "local": "1998-01-31T12:14:45+07:00", "utc": "1998-01-31T05:14:45Z", "ms": 886223684652.7412 }, "end": { "local": "1998-01-31T13:02:45+07:00", "utc": "1998-01-31T06:02:45Z", "ms": 886226564652.7412 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-02-01", "window": { "start": { "local": "1998-02-01T12:14:53+07:00", "utc": "1998-02-01T05:14:53Z", "ms": 886310093393.26 }, "end": { "local": "1998-02-01T13:02:53+07:00", "utc": "1998-02-01T06:02:53Z", "ms": 886312973393.26 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 01:51 on Sun 1 Feb to 23:13 on Sun 1 Feb.", "fact": "1998-01-31T18:50:52Z → 1998-02-01T16:12:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:15–13:03 on the 31st, 12:15–13:03 on the 1st.", "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 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 36584 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Medan, 1998: Sunday 1 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-02-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-02-01", "confidence": "determinate" } ], "quote": "In Medan, Śrī Pañcamī 1998 falls on Sunday 1 February. Pañcamī runs from 01:51 on Sun 1 Feb to 23:13 on Sun 1 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-02-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36584, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1998-02-01T01:50:52+07:00", "utc": "1998-01-31T18:50:52Z", "ms": 886272652199.3063 }, "end": { "local": "1998-02-01T23:12:37+07:00", "utc": "1998-02-01T16:12:37Z", "ms": 886349557379.0338 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-02-01T01:50:52+07:00", "utc": "1998-01-31T18:50:52Z", "ms": 886272652199.3063 }, "end": { "local": "1998-02-01T23:12:37+07:00", "utc": "1998-02-01T16:12:37Z", "ms": 886349557379.0338 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-01-31", "window": { "start": { "local": "1998-01-31T12:14:45+07:00", "utc": "1998-01-31T05:14:45Z", "ms": 886223684652.7412 }, "end": { "local": "1998-01-31T13:02:45+07:00", "utc": "1998-01-31T06:02:45Z", "ms": 886226564652.7412 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-02-01", "window": { "start": { "local": "1998-02-01T12:14:53+07:00", "utc": "1998-02-01T05:14:53Z", "ms": 886310093393.26 }, "end": { "local": "1998-02-01T13:02:53+07:00", "utc": "1998-02-01T06:02:53Z", "ms": 886312973393.26 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 01:51 on Sun 1 Feb to 23:13 on Sun 1 Feb.", "fact": "1998-01-31T18:50:52Z → 1998-02-01T16:12:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:15–13:03 on the 31st, 12:15–13:03 on the 1st.", "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 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36584 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Medan, 1998: Sunday 1 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasanta-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-02-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-02-01", "confidence": "determinate" } ], "quote": "In Medan, Vasanta Pañcamī 1998 falls on Sunday 1 February. Pañcamī runs from 01:51 on Sun 1 Feb to 23:13 on Sun 1 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29632, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1998-02-02T20:49:58+07:00", "utc": "1998-02-02T13:49:58Z", "ms": 886427397572.9373 }, "end": { "local": "1998-02-03T18:46:47+07:00", "utc": "1998-02-03T11:46:47Z", "ms": 886506407292.5029 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-02-02T20:49:58+07:00", "utc": "1998-02-02T13:49:58Z", "ms": 886427397572.9373 }, "end": { "local": "1998-02-03T18:46:47+07:00", "utc": "1998-02-03T11:46:47Z", "ms": 886506407292.5029 } }, "kaala": "arunodaya", "days": [ { "local_date": "1998-02-03", "window": { "start": { "local": "1998-02-03T05:03:50+07:00", "utc": "1998-02-02T22:03:50Z", "ms": 886457029899.1978 }, "end": { "local": "1998-02-03T06:40:07+07:00", "utc": "1998-02-02T23:40:07Z", "ms": 886462807062.3984 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1998-02-04", "window": { "start": { "local": "1998-02-04T05:03:53+07:00", "utc": "1998-02-03T22:03:53Z", "ms": 886543433059.5416 }, "end": { "local": "1998-02-04T06:40:09+07:00", "utc": "1998-02-03T23:40:09Z", "ms": 886549208966.203 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 20:50 on Mon 2 Feb to 18:47 on Tue 3 Feb.", "fact": "1998-02-02T13:49:58Z → 1998-02-03T11:46:47Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:04–06:40 on the 3rd, 05:04–06:40 on the 4th.", "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 96 of 96 minutes on the 3rd and 0 of 96 on the 4th.", "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 29632 s" }, { "step": "ruling", "text": "Ratha Saptamī, Medan, 1998: Tuesday 3 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-02-03", "confidence": "determinate" } ], "quote": "In Medan, Ratha Saptamī 1998 falls on Tuesday 3 February. Saptamī runs from 20:50 on Mon 2 Feb to 18:47 on Tue 3 Feb and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-02-07", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-02-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28338, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-02-06T14:57:45+07:00", "utc": "1998-02-06T07:57:45Z", "ms": 886751864570.0386 }, "end": { "local": "1998-02-07T14:32:27+07:00", "utc": "1998-02-07T07:32:27Z", "ms": 886836747140.0042 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-02-06T14:57:45+07:00", "utc": "1998-02-06T07:57:45Z", "ms": 886751864570.0386 }, "end": { "local": "1998-02-07T14:32:27+07:00", "utc": "1998-02-07T07:32:27Z", "ms": 886836747140.0042 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-02-06", "window": { "start": { "local": "1998-02-06T06:40:10+07:00", "utc": "1998-02-05T23:40:10Z", "ms": 886722010088.7755 }, "end": { "local": "1998-02-06T06:40:10+07:00", "utc": "1998-02-05T23:40:10Z", "ms": 886722010088.7755 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-02-07", "window": { "start": { "local": "1998-02-07T06:40:09+07:00", "utc": "1998-02-06T23:40:09Z", "ms": 886808409322.3993 }, "end": { "local": "1998-02-07T06:40:09+07:00", "utc": "1998-02-06T23:40:09Z", "ms": 886808409322.3993 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:58 on Fri 6 Feb to 14:32 on Sat 7 Feb.", "fact": "1998-02-06T07:57:45Z → 1998-02-07T07:32:27Z" }, { "step": "kaala", "text": "Sunrise is at 06:40 on the 6th and 06:40 on the 7th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 6th and is on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28338 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Medan, 1998: Saturday 7 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": "1998-02-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-02-07", "confidence": "determinate" } ], "quote": "In Medan, Jayā Ekādaśī 1998 falls on Saturday 7 February. Ekādaśī runs from 14:58 on Fri 6 Feb to 14:32 on Sat 7 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-02-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-02-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5339, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1998-02-07T14:32:27+07:00", "utc": "1998-02-07T07:32:27Z", "ms": 886836747140.0042 }, "end": { "local": "1998-02-08T14:33:54+07:00", "utc": "1998-02-08T07:33:54Z", "ms": 886923234322.569 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-02-07T14:32:27+07:00", "utc": "1998-02-07T07:32:27Z", "ms": 886836747140.0042 }, "end": { "local": "1998-02-08T14:33:54+07:00", "utc": "1998-02-08T07:33:54Z", "ms": 886923234322.569 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-02-07", "window": { "start": { "local": "1998-02-07T12:15:28+07:00", "utc": "1998-02-07T05:15:28Z", "ms": 886828528309.0159 }, "end": { "local": "1998-02-07T13:03:28+07:00", "utc": "1998-02-07T06:03:28Z", "ms": 886831408309.0159 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-02-08", "window": { "start": { "local": "1998-02-08T12:15:31+07:00", "utc": "1998-02-08T05:15:31Z", "ms": 886914931244.1505 }, "end": { "local": "1998-02-08T13:03:31+07:00", "utc": "1998-02-08T06:03:31Z", "ms": 886917811244.1505 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 14:32 on Sat 7 Feb to 14:34 on Sun 8 Feb.", "fact": "1998-02-07T07:32:27Z → 1998-02-08T07:33:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:15–13:03 on the 7th, 12:16–13:04 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 5339 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Medan, 1998: Sunday 8 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": "1998-02-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-02-08", "confidence": "determinate" } ], "quote": "In Medan, Bhīṣma Dvādaśī 1998 falls on Sunday 8 February. Dvādaśī runs from 14:32 on Sat 7 Feb to 14:34 on Sun 8 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/pradosha-vrata?on=1998-02-08", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-02-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12984, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-02-08T14:33:54+07:00", "utc": "1998-02-08T07:33:54Z", "ms": 886923234322.569 }, "end": { "local": "1998-02-09T15:02:38+07:00", "utc": "1998-02-09T08:02:38Z", "ms": 887011357861.7456 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-02-08T14:33:54+07:00", "utc": "1998-02-08T07:33:54Z", "ms": 886923234322.569 }, "end": { "local": "1998-02-09T15:02:38+07:00", "utc": "1998-02-09T08:02:38Z", "ms": 887011357861.7456 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-02-08", "window": { "start": { "local": "1998-02-08T18:38:55+07:00", "utc": "1998-02-08T11:38:55Z", "ms": 886937934804.8564 }, "end": { "local": "1998-02-08T20:15:04+07:00", "utc": "1998-02-08T13:15:04Z", "ms": 886943704188.6046 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1998-02-09", "window": { "start": { "local": "1998-02-09T18:39:02+07:00", "utc": "1998-02-09T11:39:02Z", "ms": 887024341569.088 }, "end": { "local": "1998-02-09T20:15:10+07:00", "utc": "1998-02-09T13:15:10Z", "ms": 887030109604.2961 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:34 on Sun 8 Feb to 15:03 on Mon 9 Feb.", "fact": "1998-02-08T07:33:54Z → 1998-02-09T08:02:38Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:39–20:15 on the 8th, 18:39–20:15 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 96 of 96 minutes on the 8th and 0 of 96 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 12984 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Medan, 1998: Sunday 8 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": "1998-02-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-02-08", "confidence": "determinate" } ], "quote": "In Medan, Śukla Pradoṣa Vrata 1998 falls on Sunday 8 February. Trayodaśī runs from 14:34 on Sun 8 Feb to 15:03 on Mon 9 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-02-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-02-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10522, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-02-10T15:58:57+07:00", "utc": "1998-02-10T08:58:57Z", "ms": 887101137080.0165 }, "end": { "local": "1998-02-11T17:22:39+07:00", "utc": "1998-02-11T10:22:39Z", "ms": 887192558553.2616 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1998-02-10T15:58:57+07:00", "utc": "1998-02-10T08:58:57Z", "ms": 887101137080.0165 }, "end": { "local": "1998-02-11T17:22:39+07:00", "utc": "1998-02-11T10:22:39Z", "ms": 887192558553.2616 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-02-10", "window": { "start": { "local": "1998-02-10T12:15:35+07:00", "utc": "1998-02-10T05:15:35Z", "ms": 887087734715.3563 }, "end": { "local": "1998-02-10T13:03:35+07:00", "utc": "1998-02-10T06:03:35Z", "ms": 887090614715.3563 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-02-11", "window": { "start": { "local": "1998-02-11T12:15:35+07:00", "utc": "1998-02-11T05:15:35Z", "ms": 887174135273.7112 }, "end": { "local": "1998-02-11T13:03:35+07:00", "utc": "1998-02-11T06:03:35Z", "ms": 887177015273.7112 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:59 on Tue 10 Feb to 17:23 on Wed 11 Feb.", "fact": "1998-02-10T08:58:57Z → 1998-02-11T10:22:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:16–13:04 on the 10th, 12:16–13:04 on the 11th.", "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 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10522 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Medan, 1998: Wednesday 11 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": "1998-02-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-02-11", "confidence": "determinate" } ], "quote": "In Medan, Māghī Pūrṇimā 1998 falls on Wednesday 11 February. Pūrṇimā runs from 15:59 on Tue 10 Feb to 17:23 on Wed 11 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/sankashta-chaturthi?on=1998-02-15", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-02-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10960, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-02-14T23:55:34+07:00", "utc": "1998-02-14T16:55:34Z", "ms": 887475333865.5272 }, "end": { "local": "1998-02-16T02:35:30+07:00", "utc": "1998-02-15T19:35:30Z", "ms": 887571330109.1733 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1998-02-14T23:55:34+07:00", "utc": "1998-02-14T16:55:34Z", "ms": 887475333865.5272 }, "end": { "local": "1998-02-16T02:35:30+07:00", "utc": "1998-02-15T19:35:30Z", "ms": 887571330109.1733 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-02-14", "window": { "start": { "local": "1998-02-14T20:52:54+07:00", "utc": "1998-02-14T13:52:54Z", "ms": 887464373647.6173 }, "end": { "local": "1998-02-14T20:52:54+07:00", "utc": "1998-02-14T13:52:54Z", "ms": 887464373647.6173 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-02-15", "window": { "start": { "local": "1998-02-15T21:36:06+07:00", "utc": "1998-02-15T14:36:06Z", "ms": 887553365764.3855 }, "end": { "local": "1998-02-15T21:36:06+07:00", "utc": "1998-02-15T14:36:06Z", "ms": 887553365764.3855 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:56 on Sat 14 Feb to 02:36 on Mon 16 Feb.", "fact": "1998-02-14T16:55:34Z → 1998-02-15T19:35:30Z" }, { "step": "kaala", "text": "Moonrise is at 20:53 on the 14th and 21:36 on the 15th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 14th and is on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10960 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Medan, 1998: Sunday 15 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": "1998-02-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-02-15", "confidence": "determinate" } ], "quote": "In Medan, Saṅkaṣṭa Caturthī 1998 falls on Sunday 15 February. Caturthī runs from 23:56 on Sat 14 Feb to 02:36 on Mon 16 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/sankashta-chaturthi?on=1998-02-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ekadashi?on=1998-02-23", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-02-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14261, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-02-22T11:33:19+07:00", "utc": "1998-02-22T04:33:19Z", "ms": 888121999022.517 }, "end": { "local": "1998-02-23T10:35:49+07:00", "utc": "1998-02-23T03:35:49Z", "ms": 888204948780.8923 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1998-02-22T11:33:19+07:00", "utc": "1998-02-22T04:33:19Z", "ms": 888121999022.517 }, "end": { "local": "1998-02-23T10:35:49+07:00", "utc": "1998-02-23T03:35:49Z", "ms": 888204948780.8923 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-02-22", "window": { "start": { "local": "1998-02-22T06:38:21+07:00", "utc": "1998-02-21T23:38:21Z", "ms": 888104300655.1112 }, "end": { "local": "1998-02-22T06:38:21+07:00", "utc": "1998-02-21T23:38:21Z", "ms": 888104300655.1112 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-02-23", "window": { "start": { "local": "1998-02-23T06:38:08+07:00", "utc": "1998-02-22T23:38:08Z", "ms": 888190687615.7144 }, "end": { "local": "1998-02-23T06:38:08+07:00", "utc": "1998-02-22T23:38:08Z", "ms": 888190687615.7144 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:33 on Sun 22 Feb to 10:36 on Mon 23 Feb.", "fact": "1998-02-22T04:33:19Z → 1998-02-23T03:35:49Z" }, { "step": "kaala", "text": "Sunrise is at 06:38 on the 22nd and 06:38 on the 23rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 22nd and is on the 23rd.", "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 14261 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Medan, 1998: Monday 23 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": "1998-02-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-02-23", "confidence": "determinate" } ], "quote": "In Medan, Vijayā Ekādaśī 1998 falls on Monday 23 February. Ekādaśī runs from 11:33 on Sun 22 Feb to 10:36 on Mon 23 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-02-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-02-24", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-02-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35156, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-02-24T08:53:26+07:00", "utc": "1998-02-24T01:53:26Z", "ms": 888285205559.0162 }, "end": { "local": "1998-02-25T06:32:13+07:00", "utc": "1998-02-24T23:32:13Z", "ms": 888363133335.2892 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1998-02-24T08:53:26+07:00", "utc": "1998-02-24T01:53:26Z", "ms": 888285205559.0162 }, "end": { "local": "1998-02-25T06:32:13+07:00", "utc": "1998-02-24T23:32:13Z", "ms": 888363133335.2892 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-02-24", "window": { "start": { "local": "1998-02-24T18:39:21+07:00", "utc": "1998-02-24T11:39:21Z", "ms": 888320361309.7406 }, "end": { "local": "1998-02-24T20:15:08+07:00", "utc": "1998-02-24T13:15:08Z", "ms": 888326107754.4751 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1998-02-25", "window": { "start": { "local": "1998-02-25T18:39:18+07:00", "utc": "1998-02-25T11:39:18Z", "ms": 888406757749.0406 }, "end": { "local": "1998-02-25T20:15:03+07:00", "utc": "1998-02-25T13:15:03Z", "ms": 888412502681.5016 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:53 on Tue 24 Feb to 06:32 on Wed 25 Feb.", "fact": "1998-02-24T01:53:26Z → 1998-02-24T23:32:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:39–20:15 on the 24th, 18:39–20:15 on the 25th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 96 of 96 minutes on the 24th and 0 of 96 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35156 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Medan, 1998: Tuesday 24 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": "1998-02-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-02-24", "confidence": "determinate" } ], "quote": "In Medan, Kṛṣṇa Pradoṣa Vrata 1998 falls on Tuesday 24 February. Trayodaśī runs from 08:53 on Tue 24 Feb to 06:32 on Wed 25 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-02-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-02-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9463, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-02-25T06:32:13+07:00", "utc": "1998-02-24T23:32:13Z", "ms": 888363133335.2892 }, "end": { "local": "1998-02-26T03:40:04+07:00", "utc": "1998-02-25T20:40:04Z", "ms": 888439204261.8188 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1998-02-25T06:32:13+07:00", "utc": "1998-02-24T23:32:13Z", "ms": 888363133335.2892 }, "end": { "local": "1998-02-26T03:40:04+07:00", "utc": "1998-02-25T20:40:04Z", "ms": 888439204261.8188 } }, "kaala": "nishita", "days": [ { "local_date": "1998-02-24", "window": { "start": { "local": "1998-02-25T00:14:30+07:00", "utc": "1998-02-24T17:14:30Z", "ms": 888340470477.4951 }, "end": { "local": "1998-02-25T01:02:30+07:00", "utc": "1998-02-24T18:02:30Z", "ms": 888343350477.4951 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-02-25", "window": { "start": { "local": "1998-02-26T00:14:21+07:00", "utc": "1998-02-25T17:14:21Z", "ms": 888426861245.7693 }, "end": { "local": "1998-02-26T01:02:21+07:00", "utc": "1998-02-25T18:02:21Z", "ms": 888429741245.7693 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 06:32 on Wed 25 Feb to 03:40 on Thu 26 Feb.", "fact": "1998-02-24T23:32:13Z → 1998-02-25T20:40:04Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:15–01:03 on the 24th, 00:14–01:02 on the 25th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 9463 s" }, { "step": "ruling", "text": "Mahāśivarātri, Medan, 1998: Wednesday 25 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": "1998-02-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-02-25", "confidence": "determinate" } ], "quote": "In Medan, Mahāśivarātri 1998 falls on Wednesday 25 February. Caturdaśī runs from 06:32 on Wed 25 Feb to 03:40 on Thu 26 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/vinayaka-chaturthi?on=1998-03-02", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3871, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-03-01T14:06:18+07:00", "utc": "1998-03-01T07:06:18Z", "ms": 888735977927.5566 }, "end": { "local": "1998-03-02T10:58:08+07:00", "utc": "1998-03-02T03:58:08Z", "ms": 888811088161.5114 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1998-03-01T14:06:18+07:00", "utc": "1998-03-01T07:06:18Z", "ms": 888735977927.5566 }, "end": { "local": "1998-03-02T10:58:08+07:00", "utc": "1998-03-02T03:58:08Z", "ms": 888811088161.5114 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-03-01", "window": { "start": { "local": "1998-03-01T12:13:47+07:00", "utc": "1998-03-01T05:13:47Z", "ms": 888729227367.7834 }, "end": { "local": "1998-03-01T13:01:47+07:00", "utc": "1998-03-01T06:01:47Z", "ms": 888732107367.7834 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-03-02", "window": { "start": { "local": "1998-03-02T12:13:36+07:00", "utc": "1998-03-02T05:13:36Z", "ms": 888815615693.1965 }, "end": { "local": "1998-03-02T13:01:36+07:00", "utc": "1998-03-02T06:01:36Z", "ms": 888818495693.1965 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 14:06 on Sun 1 Mar to 10:58 on Mon 2 Mar.", "fact": "1998-03-01T07:06:18Z → 1998-03-02T03:58:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:14–13:02 on the 1st, 12:14–13:02 on the 2nd.", "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 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: unstated → second-day · margin 3871 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Medan, 1998: Monday 2 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": "1998-03-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-02", "confidence": "determinate" } ], "quote": "In Medan, Vināyaka Caturthī 1998 falls on Monday 2 March. Caturthī runs from 14:06 on Sun 1 Mar to 10:58 on Mon 2 Mar, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/medan/festivals/1998/vinayaka-chaturthi?on=1998-03-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ekadashi?on=1998-03-08", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9530, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-03-08T03:05:28+07:00", "utc": "1998-03-07T20:05:28Z", "ms": 889301127887.6189 }, "end": { "local": "1998-03-09T03:55:15+07:00", "utc": "1998-03-08T20:55:15Z", "ms": 889390514642.5881 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1998-03-08T03:05:28+07:00", "utc": "1998-03-07T20:05:28Z", "ms": 889301127887.6189 }, "end": { "local": "1998-03-09T03:55:15+07:00", "utc": "1998-03-08T20:55:15Z", "ms": 889390514642.5881 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-03-08", "window": { "start": { "local": "1998-03-08T06:34:26+07:00", "utc": "1998-03-07T23:34:26Z", "ms": 889313665511.1455 }, "end": { "local": "1998-03-08T06:34:26+07:00", "utc": "1998-03-07T23:34:26Z", "ms": 889313665511.1455 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-03-09", "window": { "start": { "local": "1998-03-09T06:34:05+07:00", "utc": "1998-03-08T23:34:05Z", "ms": 889400044958.9281 }, "end": { "local": "1998-03-09T06:34:05+07:00", "utc": "1998-03-08T23:34:05Z", "ms": 889400044958.9281 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:05 on Sun 8 Mar to 03:55 on Mon 9 Mar.", "fact": "1998-03-07T20:05:28Z → 1998-03-08T20:55:15Z" }, { "step": "kaala", "text": "Sunrise is at 06:34 on the 8th and 06:34 on the 9th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 8th and is not on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9530 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Medan, 1998: Sunday 8 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": "1998-03-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-08", "confidence": "determinate" } ], "quote": "In Medan, Āmalakī Ekādaśī 1998 falls on Sunday 8 March. Ekādaśī runs from 03:05 on Sun 8 Mar to 03:55 on Mon 9 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-03-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-03-10", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32563, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-03-10T05:16:06+07:00", "utc": "1998-03-09T22:16:06Z", "ms": 889481766263.41 }, "end": { "local": "1998-03-11T07:03:06+07:00", "utc": "1998-03-11T00:03:06Z", "ms": 889574585766.9034 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1998-03-10T05:16:06+07:00", "utc": "1998-03-09T22:16:06Z", "ms": 889481766263.41 }, "end": { "local": "1998-03-11T07:03:06+07:00", "utc": "1998-03-11T00:03:06Z", "ms": 889574585766.9034 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-03-09", "window": { "start": { "local": "1998-03-09T18:37:56+07:00", "utc": "1998-03-09T11:37:56Z", "ms": 889443476488.9866 }, "end": { "local": "1998-03-09T20:13:23+07:00", "utc": "1998-03-09T13:13:23Z", "ms": 889449202825.6643 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "1998-03-10", "window": { "start": { "local": "1998-03-10T18:37:47+07:00", "utc": "1998-03-10T11:37:47Z", "ms": 889529866992.6003 }, "end": { "local": "1998-03-10T20:13:12+07:00", "utc": "1998-03-10T13:13:12Z", "ms": 889535591753.6184 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:16 on Tue 10 Mar to 07:03 on Wed 11 Mar.", "fact": "1998-03-09T22:16:06Z → 1998-03-11T00:03:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:38–20:13 on the 9th, 18:38–20:13 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 0 of 95 minutes on the 9th and 95 of 95 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 32563 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Medan, 1998: Tuesday 10 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": "1998-03-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-10", "confidence": "determinate" } ], "quote": "In Medan, Śukla Pradoṣa Vrata 1998 falls on Tuesday 10 March. Trayodaśī runs from 05:16 on Tue 10 Mar to 07:03 on Wed 11 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-03-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16692, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-03-12T09:10:55+07:00", "utc": "1998-03-12T02:10:55Z", "ms": 889668655295.15 }, "end": { "local": "1998-03-13T11:34:09+07:00", "utc": "1998-03-13T04:34:09Z", "ms": 889763649216.9136 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1998-03-12T09:10:55+07:00", "utc": "1998-03-12T02:10:55Z", "ms": 889668655295.15 }, "end": { "local": "1998-03-13T11:34:09+07:00", "utc": "1998-03-13T04:34:09Z", "ms": 889763649216.9136 } }, "kaala": "sayahna", "days": [ { "local_date": "1998-03-12", "window": { "start": { "local": "1998-03-12T16:12:34+07:00", "utc": "1998-03-12T09:12:34Z", "ms": 889693953843.0603 }, "end": { "local": "1998-03-12T18:37:27+07:00", "utc": "1998-03-12T11:37:27Z", "ms": 889702647043.472 } }, "covered_min": 145, "window_min": 145, "qualifies": true }, { "local_date": "1998-03-13", "window": { "start": { "local": "1998-03-13T16:12:21+07:00", "utc": "1998-03-13T09:12:21Z", "ms": 889780341120.6935 }, "end": { "local": "1998-03-13T18:37:17+07:00", "utc": "1998-03-13T11:37:17Z", "ms": 889789036635.4183 } }, "covered_min": 0, "window_min": 145, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:11 on Thu 12 Mar to 11:34 on Fri 13 Mar.", "fact": "1998-03-12T02:10:55Z → 1998-03-13T04:34:09Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:13–18:37 on the 12th, 16:12–18:37 on the 13th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 145 of 145 minutes on the 12th and 0 of 145 on the 13th.", "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 16692 s" }, { "step": "ruling", "text": "Holikā Dahana, Medan, 1998: Thursday 12 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": "1998-03-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-12", "confidence": "determinate" } ], "quote": "In Medan, Holikā Dahana 1998 falls on Thursday 12 March. Pūrṇimā runs from 09:11 on Thu 12 Mar to 11:34 on Fri 13 Mar and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16692, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-03-12T09:10:55+07:00", "utc": "1998-03-12T02:10:55Z", "ms": 889668655295.15 }, "end": { "local": "1998-03-13T11:34:09+07:00", "utc": "1998-03-13T04:34:09Z", "ms": 889763649216.9136 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1998-03-12T09:10:55+07:00", "utc": "1998-03-12T02:10:55Z", "ms": 889668655295.15 }, "end": { "local": "1998-03-13T11:34:09+07:00", "utc": "1998-03-13T04:34:09Z", "ms": 889763649216.9136 } }, "kaala": "sayahna", "days": [ { "local_date": "1998-03-12", "window": { "start": { "local": "1998-03-12T16:12:34+07:00", "utc": "1998-03-12T09:12:34Z", "ms": 889693953843.0603 }, "end": { "local": "1998-03-12T18:37:27+07:00", "utc": "1998-03-12T11:37:27Z", "ms": 889702647043.472 } }, "covered_min": 145, "window_min": 145, "qualifies": true }, { "local_date": "1998-03-13", "window": { "start": { "local": "1998-03-13T16:12:21+07:00", "utc": "1998-03-13T09:12:21Z", "ms": 889780341120.6935 }, "end": { "local": "1998-03-13T18:37:17+07:00", "utc": "1998-03-13T11:37:17Z", "ms": 889789036635.4183 } }, "covered_min": 0, "window_min": 145, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "1998-03-12", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:11 on Thu 12 Mar to 11:34 on Fri 13 Mar.", "fact": "1998-03-12T02:10:55Z → 1998-03-13T04:34:09Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:13–18:37 on the 12th, 16:12–18:37 on the 13th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 145 of 145 minutes on the 12th and 0 of 145 on the 13th.", "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 16692 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Thursday 12 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Medan, 1998: Friday 13 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": "1998-03-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-13", "confidence": "determinate" } ], "quote": "In Medan, Holī 1998 falls on Friday 13 March. It is kept the day after Holikā Dahana, which falls on Thursday 12 March. Pūrṇimā runs from 09:11 on Thu 12 Mar to 11:34 on Fri 13 Mar and covers all of sāyāhna on the 12th.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18090, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1998-03-13T11:34:09+07:00", "utc": "1998-03-13T04:34:09Z", "ms": 889763649216.9136 }, "end": { "local": "1998-03-14T14:07:11+07:00", "utc": "1998-03-14T07:07:11Z", "ms": 889859231205.4902 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-03-13T11:34:09+07:00", "utc": "1998-03-13T04:34:09Z", "ms": 889763649216.9136 }, "end": { "local": "1998-03-14T14:07:11+07:00", "utc": "1998-03-14T07:07:11Z", "ms": 889859231205.4902 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-03-13", "window": { "start": { "local": "1998-03-13T06:32:39+07:00", "utc": "1998-03-12T23:32:39Z", "ms": 889745559061.7938 }, "end": { "local": "1998-03-13T06:32:39+07:00", "utc": "1998-03-12T23:32:39Z", "ms": 889745559061.7938 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-03-14", "window": { "start": { "local": "1998-03-14T06:32:17+07:00", "utc": "1998-03-13T23:32:17Z", "ms": 889831936785.6807 }, "end": { "local": "1998-03-14T06:32:17+07:00", "utc": "1998-03-13T23:32:17Z", "ms": 889831936785.6807 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 11:34 on Fri 13 Mar to 14:07 on Sat 14 Mar.", "fact": "1998-03-13T04:34:09Z → 1998-03-14T07:07:11Z" }, { "step": "kaala", "text": "Sunrise is at 06:33 on the 13th and 06:32 on the 14th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā 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: purvaviddha → only-day · margin 18090 s" }, { "step": "ruling", "text": "Vasantotsava, Medan, 1998: Saturday 14 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": "1998-03-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-14", "confidence": "determinate" } ], "quote": "In Medan, Vasantotsava 1998 falls on Saturday 14 March. Pratipadā runs from 11:34 on Fri 13 Mar to 14:07 on Sat 14 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/sankashta-chaturthi?on=1998-03-16", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-16", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 256, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-03-16T19:17:47+07:00", "utc": "1998-03-16T12:17:47Z", "ms": 890050667246.3726 }, "end": { "local": "1998-03-17T21:40:56+07:00", "utc": "1998-03-17T14:40:56Z", "ms": 890145656141.3313 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-03-16T19:17:47+07:00", "utc": "1998-03-16T12:17:47Z", "ms": 890050667246.3726 }, "end": { "local": "1998-03-17T21:40:56+07:00", "utc": "1998-03-17T14:40:56Z", "ms": 890145656141.3313 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-03-16", "window": { "start": { "local": "1998-03-16T21:00:24+07:00", "utc": "1998-03-16T14:00:24Z", "ms": 890056823620.9553 }, "end": { "local": "1998-03-16T21:00:24+07:00", "utc": "1998-03-16T14:00:24Z", "ms": 890056823620.9553 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-03-17", "window": { "start": { "local": "1998-03-17T21:45:12+07:00", "utc": "1998-03-17T14:45:12Z", "ms": 890145912407.6458 }, "end": { "local": "1998-03-17T21:45:12+07:00", "utc": "1998-03-17T14:45:12Z", "ms": 890145912407.6458 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:18 on Mon 16 Mar to 21:41 on Tue 17 Mar.", "fact": "1998-03-16T12:17:47Z → 1998-03-17T14:40:56Z" }, { "step": "kaala", "text": "Moonrise is at 21:00 on the 16th and 21:45 on the 17th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 16th and is not on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 256 s < 300 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Medan, 1998: Monday 16 March.", "fact": "confidence: boundary (margin)" } ], "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": "1998-03-16", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-16", "confidence": "determinate" } ], "quote": "In Medan, Saṅkaṣṭa Caturthī 1998 falls on Monday 16 March. Caturthī runs from 19:18 on Mon 16 Mar to 21:41 on Tue 17 Mar and is current at moonrise that day. It is 4 min 16 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/medan/festivals/1998/sankashta-chaturthi?on=1998-03-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33972, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1998-03-21T02:22:40+07:00", "utc": "1998-03-20T19:22:40Z", "ms": 890421760028.5237 }, "end": { "local": "1998-03-22T02:42:10+07:00", "utc": "1998-03-21T19:42:10Z", "ms": 890509330420.6799 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-03-21T02:22:40+07:00", "utc": "1998-03-20T19:22:40Z", "ms": 890421760028.5237 }, "end": { "local": "1998-03-22T02:42:10+07:00", "utc": "1998-03-21T19:42:10Z", "ms": 890509330420.6799 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-03-21", "window": { "start": { "local": "1998-03-21T12:08:40+07:00", "utc": "1998-03-21T05:08:40Z", "ms": 890456920246.0066 }, "end": { "local": "1998-03-21T12:56:40+07:00", "utc": "1998-03-21T05:56:40Z", "ms": 890459800246.0066 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-03-22", "window": { "start": { "local": "1998-03-22T12:08:22+07:00", "utc": "1998-03-22T05:08:22Z", "ms": 890543302379.1045 }, "end": { "local": "1998-03-22T12:56:22+07:00", "utc": "1998-03-22T05:56:22Z", "ms": 890546182379.1045 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 02:23 on Sat 21 Mar to 02:42 on Sun 22 Mar.", "fact": "1998-03-20T19:22:40Z → 1998-03-21T19:42:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 21st, 12:08–12:56 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 33972 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Medan, 1998: Saturday 21 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": "1998-03-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-21", "confidence": "determinate" } ], "quote": "In Medan, Śītalāṣṭamī 1998 falls on Saturday 21 March. Aṣṭamī runs from 02:23 on Sat 21 Mar to 02:42 on Sun 22 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-03-24", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19420, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-03-24T01:04:43+07:00", "utc": "1998-03-23T18:04:43Z", "ms": 890676283185.0618 }, "end": { "local": "1998-03-24T23:09:13+07:00", "utc": "1998-03-24T16:09:13Z", "ms": 890755753326.3497 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-03-24T01:04:43+07:00", "utc": "1998-03-23T18:04:43Z", "ms": 890676283185.0618 }, "end": { "local": "1998-03-24T23:09:13+07:00", "utc": "1998-03-24T16:09:13Z", "ms": 890755753326.3497 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-03-24", "window": { "start": { "local": "1998-03-24T06:28:23+07:00", "utc": "1998-03-23T23:28:23Z", "ms": 890695702977.3905 }, "end": { "local": "1998-03-24T06:28:23+07:00", "utc": "1998-03-23T23:28:23Z", "ms": 890695702977.3905 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-03-25", "window": { "start": { "local": "1998-03-25T06:27:59+07:00", "utc": "1998-03-24T23:27:59Z", "ms": 890782078993.8531 }, "end": { "local": "1998-03-25T06:27:59+07:00", "utc": "1998-03-24T23:27:59Z", "ms": 890782078993.8531 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:05 on Tue 24 Mar to 23:09 on Tue 24 Mar.", "fact": "1998-03-23T18:04:43Z → 1998-03-24T16:09:13Z" }, { "step": "kaala", "text": "Sunrise is at 06:28 on the 24th and 06:28 on the 25th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 24th and is not on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19420 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Medan, 1998: Tuesday 24 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": "1998-03-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-24", "confidence": "determinate" } ], "quote": "In Medan, Pāpamocanī Ekādaśī 1998 falls on Tuesday 24 March. Ekādaśī runs from 01:05 on Tue 24 Mar to 23:09 on Tue 24 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-03-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-03-25", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-25", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 1486, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-03-25T20:34:44+07:00", "utc": "1998-03-25T13:34:44Z", "ms": 890832884346.017 }, "end": { "local": "1998-03-26T17:28:10+07:00", "utc": "1998-03-26T10:28:10Z", "ms": 890908089848.0469 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-03-25T20:34:44+07:00", "utc": "1998-03-25T13:34:44Z", "ms": 890832884346.017 }, "end": { "local": "1998-03-26T17:28:10+07:00", "utc": "1998-03-26T10:28:10Z", "ms": 890908089848.0469 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-03-25", "window": { "start": { "local": "1998-03-25T18:34:58+07:00", "utc": "1998-03-25T11:34:58Z", "ms": 890825697802.4243 }, "end": { "local": "1998-03-25T20:09:59+07:00", "utc": "1998-03-25T13:09:59Z", "ms": 890831398759.9482 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "1998-03-26", "window": { "start": { "local": "1998-03-26T18:34:46+07:00", "utc": "1998-03-26T11:34:46Z", "ms": 890912085695.3427 }, "end": { "local": "1998-03-26T20:09:45+07:00", "utc": "1998-03-26T13:09:45Z", "ms": 890917785064.6201 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:35 on Wed 25 Mar to 17:28 on Thu 26 Mar.", "fact": "1998-03-25T13:34:44Z → 1998-03-26T10:28:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:35–20:10 on the 25th, 18:35–20:10 on the 26th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 95 minutes on the 25th and 0 of 95 on the 26th.", "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 1486 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Medan, 1998: Wednesday 25 March.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-03-25", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-25", "confidence": "determinate" } ], "quote": "In Medan, Kṛṣṇa Pradoṣa Vrata 1998 falls on Wednesday 25 March. Trayodaśī runs from 20:35 on Wed 25 Mar to 17:28 on Thu 26 Mar, and reaches pradoṣa on neither day.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-03-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/shivaratri?on=1998-03-26", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23928, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-03-26T17:28:10+07:00", "utc": "1998-03-26T10:28:10Z", "ms": 890908089848.0469 }, "end": { "local": "1998-03-27T13:57:57+07:00", "utc": "1998-03-27T06:57:57Z", "ms": 890981877010.109 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-03-26T17:28:10+07:00", "utc": "1998-03-26T10:28:10Z", "ms": 890908089848.0469 }, "end": { "local": "1998-03-27T13:57:57+07:00", "utc": "1998-03-27T06:57:57Z", "ms": 890981877010.109 } }, "kaala": "nishita", "days": [ { "local_date": "1998-03-26", "window": { "start": { "local": "1998-03-27T00:06:58+07:00", "utc": "1998-03-26T17:06:58Z", "ms": 890932018330.1333 }, "end": { "local": "1998-03-27T00:54:58+07:00", "utc": "1998-03-26T17:54:58Z", "ms": 890934898330.1333 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-03-27", "window": { "start": { "local": "1998-03-28T00:06:40+07:00", "utc": "1998-03-27T17:06:40Z", "ms": 891018400270.893 }, "end": { "local": "1998-03-28T00:54:40+07:00", "utc": "1998-03-27T17:54:40Z", "ms": 891021280270.893 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:28 on Thu 26 Mar to 13:58 on Fri 27 Mar.", "fact": "1998-03-26T10:28:10Z → 1998-03-27T06:57:57Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:07–00:55 on the 26th, 00:07–00:55 on the 27th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 26th and 0 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23928 s" }, { "step": "ruling", "text": "Śivarātri, Medan, 1998: Thursday 26 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": "1998-03-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-26", "confidence": "determinate" } ], "quote": "In Medan, Śivarātri 1998 falls on Thursday 26 March. Caturdaśī runs from 17:28 on Thu 26 Mar to 13:58 on Fri 27 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/shivaratri?on=1998-03-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6777, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1998-03-28T10:13:37+07:00", "utc": "1998-03-28T03:13:37Z", "ms": 891054817358.233 }, "end": { "local": "1998-03-29T06:25:22+07:00", "utc": "1998-03-28T23:25:22Z", "ms": 891127521877.926 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-03-28T10:13:37+07:00", "utc": "1998-03-28T03:13:37Z", "ms": 891054817358.233 }, "end": { "local": "1998-03-29T06:25:22+07:00", "utc": "1998-03-28T23:25:22Z", "ms": 891127521877.926 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-03-28", "window": { "start": { "local": "1998-03-28T12:06:34+07:00", "utc": "1998-03-28T05:06:34Z", "ms": 891061594224.3147 }, "end": { "local": "1998-03-28T12:54:34+07:00", "utc": "1998-03-28T05:54:34Z", "ms": 891064474224.3147 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-03-29", "window": { "start": { "local": "1998-03-29T12:06:16+07:00", "utc": "1998-03-29T05:06:16Z", "ms": 891147976197.2517 }, "end": { "local": "1998-03-29T12:54:16+07:00", "utc": "1998-03-29T05:54:16Z", "ms": 891150856197.2517 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 10:14 on Sat 28 Mar to 06:25 on Sun 29 Mar.", "fact": "1998-03-28T03:13:37Z → 1998-03-28T23:25:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 28th, 12:06–12:54 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 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 6777 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Medan, 1998: Saturday 28 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": "1998-03-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-28", "confidence": "determinate" } ], "quote": "In Medan, Navarātrārambha (Caitra) (Chaitra Navratri) 1998 falls on Saturday 28 March. Pratipadā runs from 10:14 on Sat 28 Mar to 06:25 on Sun 29 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33739, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1998-03-30T02:43:39+07:00", "utc": "1998-03-29T19:43:39Z", "ms": 891200618976.4374 }, "end": { "local": "1998-03-30T23:18:52+07:00", "utc": "1998-03-30T16:18:52Z", "ms": 891274732176.4891 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-03-30T02:43:39+07:00", "utc": "1998-03-29T19:43:39Z", "ms": 891200618976.4374 }, "end": { "local": "1998-03-30T23:18:52+07:00", "utc": "1998-03-30T16:18:52Z", "ms": 891274732176.4891 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-03-30", "window": { "start": { "local": "1998-03-30T12:05:58+07:00", "utc": "1998-03-30T05:05:58Z", "ms": 891234358209.8262 }, "end": { "local": "1998-03-30T12:53:58+07:00", "utc": "1998-03-30T05:53:58Z", "ms": 891237238209.8262 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-03-31", "window": { "start": { "local": "1998-03-31T12:05:40+07:00", "utc": "1998-03-31T05:05:40Z", "ms": 891320740276.8801 }, "end": { "local": "1998-03-31T12:53:40+07:00", "utc": "1998-03-31T05:53:40Z", "ms": 891323620276.8801 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 02:44 on Mon 30 Mar to 23:19 on Mon 30 Mar.", "fact": "1998-03-29T19:43:39Z → 1998-03-30T16:18:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:06–12:54 on the 30th, 12:06–12:54 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 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: unstated → only-day · margin 33739 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Medan, 1998: Monday 30 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": "1998-03-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-30", "confidence": "determinate" } ], "quote": "In Medan, Gaurī Tṛtīyā (Gangaur) 1998 falls on Monday 30 March. Tṛtīyā runs from 02:44 on Mon 30 Mar to 23:19 on Mon 30 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33739, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1998-03-30T02:43:39+07:00", "utc": "1998-03-29T19:43:39Z", "ms": 891200618976.4374 }, "end": { "local": "1998-03-30T23:18:52+07:00", "utc": "1998-03-30T16:18:52Z", "ms": 891274732176.4891 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-03-30T02:43:39+07:00", "utc": "1998-03-29T19:43:39Z", "ms": 891200618976.4374 }, "end": { "local": "1998-03-30T23:18:52+07:00", "utc": "1998-03-30T16:18:52Z", "ms": 891274732176.4891 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-03-30", "window": { "start": { "local": "1998-03-30T12:05:58+07:00", "utc": "1998-03-30T05:05:58Z", "ms": 891234358209.8262 }, "end": { "local": "1998-03-30T12:53:58+07:00", "utc": "1998-03-30T05:53:58Z", "ms": 891237238209.8262 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-03-31", "window": { "start": { "local": "1998-03-31T12:05:40+07:00", "utc": "1998-03-31T05:05:40Z", "ms": 891320740276.8801 }, "end": { "local": "1998-03-31T12:53:40+07:00", "utc": "1998-03-31T05:53:40Z", "ms": 891323620276.8801 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 02:44 on Mon 30 Mar to 23:19 on Mon 30 Mar.", "fact": "1998-03-29T19:43:39Z → 1998-03-30T16:18:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:06–12:54 on the 30th, 12:06–12:54 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 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: paraviddha → only-day · margin 33739 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Medan, 1998: Monday 30 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": "1998-03-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-30", "confidence": "determinate" } ], "quote": "In Medan, Saubhāgya Śayana Vrata 1998 falls on Monday 30 March. Tṛtīyā runs from 02:44 on Mon 30 Mar to 23:19 on Mon 30 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/vinayaka-chaturthi?on=1998-03-31", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26834, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-03-30T23:18:52+07:00", "utc": "1998-03-30T16:18:52Z", "ms": 891274732176.4891 }, "end": { "local": "1998-03-31T20:20:54+07:00", "utc": "1998-03-31T13:20:54Z", "ms": 891350453887.716 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-03-30T23:18:52+07:00", "utc": "1998-03-30T16:18:52Z", "ms": 891274732176.4891 }, "end": { "local": "1998-03-31T20:20:54+07:00", "utc": "1998-03-31T13:20:54Z", "ms": 891350453887.716 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-03-30", "window": { "start": { "local": "1998-03-30T12:05:58+07:00", "utc": "1998-03-30T05:05:58Z", "ms": 891234358209.8262 }, "end": { "local": "1998-03-30T12:53:58+07:00", "utc": "1998-03-30T05:53:58Z", "ms": 891237238209.8262 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-03-31", "window": { "start": { "local": "1998-03-31T12:05:40+07:00", "utc": "1998-03-31T05:05:40Z", "ms": 891320740276.8801 }, "end": { "local": "1998-03-31T12:53:40+07:00", "utc": "1998-03-31T05:53:40Z", "ms": 891323620276.8801 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 23:19 on Mon 30 Mar to 20:21 on Tue 31 Mar.", "fact": "1998-03-30T16:18:52Z → 1998-03-31T13:20:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:06–12:54 on the 30th, 12:06–12:54 on the 31st.", "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 30th and 48 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26834 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Medan, 1998: Tuesday 31 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": "1998-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-03-31", "confidence": "determinate" } ], "quote": "In Medan, Vināyaka Caturthī 1998 falls on Tuesday 31 March. Caturthī runs from 23:19 on Mon 30 Mar to 20:21 on Tue 31 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/vinayaka-chaturthi?on=1998-03-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18310, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1998-03-31T20:20:54+07:00", "utc": "1998-03-31T13:20:54Z", "ms": 891350453887.716 }, "end": { "local": "1998-04-01T17:58:32+07:00", "utc": "1998-04-01T10:58:32Z", "ms": 891428312253.3185 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-03-31T20:20:54+07:00", "utc": "1998-03-31T13:20:54Z", "ms": 891350453887.716 }, "end": { "local": "1998-04-01T17:58:32+07:00", "utc": "1998-04-01T10:58:32Z", "ms": 891428312253.3185 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-03-31", "window": { "start": { "local": "1998-03-31T12:05:40+07:00", "utc": "1998-03-31T05:05:40Z", "ms": 891320740276.8801 }, "end": { "local": "1998-03-31T12:53:40+07:00", "utc": "1998-03-31T05:53:40Z", "ms": 891323620276.8801 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-04-01", "window": { "start": { "local": "1998-04-01T12:05:22+07:00", "utc": "1998-04-01T05:05:22Z", "ms": 891407122414.0554 }, "end": { "local": "1998-04-01T12:53:22+07:00", "utc": "1998-04-01T05:53:22Z", "ms": 891410002414.0554 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 20:21 on Tue 31 Mar to 17:59 on Wed 1 Apr.", "fact": "1998-03-31T13:20:54Z → 1998-04-01T10:58:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:06–12:54 on the 31st, 12:05–12:53 on the 1st.", "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 31st 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 18310 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Medan, 1998: Wednesday 1 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "lakshmi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri pancami or Laksmi pancami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-04-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-01", "confidence": "determinate" } ], "quote": "In Medan, Lakṣmī Pañcamī 1998 falls on Wednesday 1 April. Pañcamī runs from 20:21 on Tue 31 Mar to 17:59 on Wed 1 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8995, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1998-04-03T15:26:21+07:00", "utc": "1998-04-03T08:26:21Z", "ms": 891591980615.9865 }, "end": { "local": "1998-04-04T15:22:25+07:00", "utc": "1998-04-04T08:22:25Z", "ms": 891678144832.636 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-04-03T15:26:21+07:00", "utc": "1998-04-03T08:26:21Z", "ms": 891591980615.9865 }, "end": { "local": "1998-04-04T15:22:25+07:00", "utc": "1998-04-04T08:22:25Z", "ms": 891678144832.636 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-04-03", "window": { "start": { "local": "1998-04-03T12:04:47+07:00", "utc": "1998-04-03T05:04:47Z", "ms": 891579886966.469 }, "end": { "local": "1998-04-03T12:52:47+07:00", "utc": "1998-04-03T05:52:47Z", "ms": 891582766966.469 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-04-04", "window": { "start": { "local": "1998-04-04T12:04:29+07:00", "utc": "1998-04-04T05:04:29Z", "ms": 891666269418.0977 }, "end": { "local": "1998-04-04T12:52:29+07:00", "utc": "1998-04-04T05:52:29Z", "ms": 891669149418.0977 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 15:26 on Fri 3 Apr to 15:22 on Sat 4 Apr.", "fact": "1998-04-03T08:26:21Z → 1998-04-04T08:22:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:05–12:53 on the 3rd, 12:04–12:52 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 3rd and 48 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8995 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Medan, 1998: Saturday 4 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhavani-utpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Annapurna puja (Beng.) (paraviddha), Bhavani-utpatti (paraviddha), Asokastami (Special when combined with naks. Punarvasu and Wednesday, after mid-day)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-04-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-04", "confidence": "determinate" } ], "quote": "In Medan, Bhavānī Utpatti 1998 falls on Saturday 4 April. Aṣṭamī runs from 15:26 on Fri 3 Apr to 15:22 on Sat 4 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8995, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1998-04-04T15:22:25+07:00", "utc": "1998-04-04T08:22:25Z", "ms": 891678144832.636 }, "end": { "local": "1998-04-05T16:04:51+07:00", "utc": "1998-04-05T09:04:51Z", "ms": 891767090936.9031 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-04-04T15:22:25+07:00", "utc": "1998-04-04T08:22:25Z", "ms": 891678144832.636 }, "end": { "local": "1998-04-05T16:04:51+07:00", "utc": "1998-04-05T09:04:51Z", "ms": 891767090936.9031 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-04-04", "window": { "start": { "local": "1998-04-04T12:04:29+07:00", "utc": "1998-04-04T05:04:29Z", "ms": 891666269418.0977 }, "end": { "local": "1998-04-04T12:52:29+07:00", "utc": "1998-04-04T05:52:29Z", "ms": 891669149418.0977 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-04-05", "window": { "start": { "local": "1998-04-05T12:04:12+07:00", "utc": "1998-04-05T05:04:12Z", "ms": 891752652012.0974 }, "end": { "local": "1998-04-05T12:52:12+07:00", "utc": "1998-04-05T05:52:12Z", "ms": 891755532012.0974 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 15:22 on Sat 4 Apr to 16:05 on Sun 5 Apr.", "fact": "1998-04-04T08:22:25Z → 1998-04-05T09:04:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 4th, 12:04–12:52 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8995 s" }, { "step": "ruling", "text": "Rāma Navamī, Medan, 1998: Sunday 5 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rama-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Ramanavami (madhyahnavyapini, special with Punarvasu naks.), Rama jayanti." } ], "not_evaluated": "The row calls the day special when it falls with Punarvasu nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-05", "confidence": "determinate" } ], "quote": "In Medan, Rāma Navamī 1998 falls on Sunday 5 April. Navamī runs from 15:22 on Sat 4 Apr to 16:05 on Sun 5 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-04-07", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39524, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-04-06T17:28:02+07:00", "utc": "1998-04-06T10:28:02Z", "ms": 891858482474.2167 }, "end": { "local": "1998-04-07T19:23:45+07:00", "utc": "1998-04-07T12:23:45Z", "ms": 891951824586.7106 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-04-06T17:28:02+07:00", "utc": "1998-04-06T10:28:02Z", "ms": 891858482474.2167 }, "end": { "local": "1998-04-07T19:23:45+07:00", "utc": "1998-04-07T12:23:45Z", "ms": 891951824586.7106 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-04-07", "window": { "start": { "local": "1998-04-07T06:22:51+07:00", "utc": "1998-04-06T23:22:51Z", "ms": 891904970891.1193 }, "end": { "local": "1998-04-07T06:22:51+07:00", "utc": "1998-04-06T23:22:51Z", "ms": 891904970891.1193 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-04-08", "window": { "start": { "local": "1998-04-08T06:22:28+07:00", "utc": "1998-04-07T23:22:28Z", "ms": 891991348103.1396 }, "end": { "local": "1998-04-08T06:22:28+07:00", "utc": "1998-04-07T23:22:28Z", "ms": 891991348103.1396 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:28 on Mon 6 Apr to 19:24 on Tue 7 Apr.", "fact": "1998-04-06T10:28:02Z → 1998-04-07T12:23:45Z" }, { "step": "kaala", "text": "Sunrise is at 06:23 on the 7th and 06:22 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 7th and is not on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 39524 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Medan, 1998: Tuesday 7 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": "1998-04-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-07", "confidence": "determinate" } ], "quote": "In Medan, Kāmadā Ekādaśī 1998 falls on Tuesday 7 April. Ekādaśī runs from 17:28 on Mon 6 Apr to 19:24 on Tue 7 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-04-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31857, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-04-08T21:42:18+07:00", "utc": "1998-04-08T14:42:18Z", "ms": 892046538073.9238 }, "end": { "local": "1998-04-10T00:14:00+07:00", "utc": "1998-04-09T17:14:00Z", "ms": 892142040067.6918 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-04-08T21:42:18+07:00", "utc": "1998-04-08T14:42:18Z", "ms": 892046538073.9238 }, "end": { "local": "1998-04-10T00:14:00+07:00", "utc": "1998-04-09T17:14:00Z", "ms": 892142040067.6918 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-04-08", "window": { "start": { "local": "1998-04-08T12:03:21+07:00", "utc": "1998-04-08T05:03:21Z", "ms": 892011800846.607 }, "end": { "local": "1998-04-08T12:51:21+07:00", "utc": "1998-04-08T05:51:21Z", "ms": 892014680846.607 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-04-09", "window": { "start": { "local": "1998-04-09T12:03:04+07:00", "utc": "1998-04-09T05:03:04Z", "ms": 892098184209.3693 }, "end": { "local": "1998-04-09T12:51:04+07:00", "utc": "1998-04-09T05:51:04Z", "ms": 892101064209.3693 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:42 on Wed 8 Apr to 00:14 on Fri 10 Apr.", "fact": "1998-04-08T14:42:18Z → 1998-04-09T17:14:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 8th, 12:03–12:51 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 8th and 48 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 31857 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Medan, 1998: Thursday 9 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": "1998-04-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-09", "confidence": "determinate" } ], "quote": "In Medan, Anaṅga Trayodaśī 1998 falls on Thursday 9 April. Trayodaśī runs from 21:42 on Wed 8 Apr to 00:14 on Fri 10 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/pradosha-vrata?on=1998-04-09", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5726, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-04-08T21:42:18+07:00", "utc": "1998-04-08T14:42:18Z", "ms": 892046538073.9238 }, "end": { "local": "1998-04-10T00:14:00+07:00", "utc": "1998-04-09T17:14:00Z", "ms": 892142040067.6918 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-04-08T21:42:18+07:00", "utc": "1998-04-08T14:42:18Z", "ms": 892046538073.9238 }, "end": { "local": "1998-04-10T00:14:00+07:00", "utc": "1998-04-09T17:14:00Z", "ms": 892142040067.6918 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-04-08", "window": { "start": { "local": "1998-04-08T18:32:14+07:00", "utc": "1998-04-08T11:32:14Z", "ms": 892035133590.0745 }, "end": { "local": "1998-04-08T20:06:53+07:00", "utc": "1998-04-08T13:06:53Z", "ms": 892040812517.6176 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "1998-04-09", "window": { "start": { "local": "1998-04-09T18:32:03+07:00", "utc": "1998-04-09T11:32:03Z", "ms": 892121522872.0905 }, "end": { "local": "1998-04-09T20:06:40+07:00", "utc": "1998-04-09T13:06:40Z", "ms": 892127200254.8833 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:42 on Wed 8 Apr to 00:14 on Fri 10 Apr.", "fact": "1998-04-08T14:42:18Z → 1998-04-09T17:14:00Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:32–20:07 on the 8th, 18:32–20:07 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 95 minutes on the 8th and 95 of 95 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 5726 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Medan, 1998: Thursday 9 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": "1998-04-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-09", "confidence": "determinate" } ], "quote": "In Medan, Śukla Pradoṣa Vrata 1998 falls on Thursday 9 April. Trayodaśī runs from 21:42 on Wed 8 Apr to 00:14 on Fri 10 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-04-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33144, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-04-10T00:14:00+07:00", "utc": "1998-04-09T17:14:00Z", "ms": 892142040067.6918 }, "end": { "local": "1998-04-11T02:50:07+07:00", "utc": "1998-04-10T19:50:07Z", "ms": 892237807461.4747 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-04-10T00:14:00+07:00", "utc": "1998-04-09T17:14:00Z", "ms": 892142040067.6918 }, "end": { "local": "1998-04-11T02:50:07+07:00", "utc": "1998-04-10T19:50:07Z", "ms": 892237807461.4747 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-04-10", "window": { "start": { "local": "1998-04-10T12:02:48+07:00", "utc": "1998-04-10T05:02:48Z", "ms": 892184567814.7675 }, "end": { "local": "1998-04-10T12:50:48+07:00", "utc": "1998-04-10T05:50:48Z", "ms": 892187447814.7675 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-04-11", "window": { "start": { "local": "1998-04-11T12:02:32+07:00", "utc": "1998-04-11T05:02:32Z", "ms": 892270951682.9056 }, "end": { "local": "1998-04-11T12:50:32+07:00", "utc": "1998-04-11T05:50:32Z", "ms": 892273831682.9056 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 00:14 on Fri 10 Apr to 02:50 on Sat 11 Apr.", "fact": "1998-04-09T17:14:00Z → 1998-04-10T19:50:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 10th, 12:03–12:51 on the 11th.", "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 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33144 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Medan, 1998: Friday 10 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": "1998-04-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-10", "confidence": "determinate" } ], "quote": "In Medan, Viṣṇudamanaka Caturdaśī 1998 falls on Friday 10 April. Caturdaśī runs from 00:14 on Fri 10 Apr to 02:50 on Sat 11 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23928, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-04-11T02:50:07+07:00", "utc": "1998-04-10T19:50:07Z", "ms": 892237807461.4747 }, "end": { "local": "1998-04-12T05:23:28+07:00", "utc": "1998-04-11T22:23:28Z", "ms": 892333408016.9788 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1998-04-11T02:50:07+07:00", "utc": "1998-04-10T19:50:07Z", "ms": 892237807461.4747 }, "end": { "local": "1998-04-12T05:23:28+07:00", "utc": "1998-04-11T22:23:28Z", "ms": 892333408016.9788 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-04-11", "window": { "start": { "local": "1998-04-11T12:02:32+07:00", "utc": "1998-04-11T05:02:32Z", "ms": 892270951682.9056 }, "end": { "local": "1998-04-11T12:50:32+07:00", "utc": "1998-04-11T05:50:32Z", "ms": 892273831682.9056 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-04-12", "window": { "start": { "local": "1998-04-12T12:02:16+07:00", "utc": "1998-04-12T05:02:16Z", "ms": 892357335833.7131 }, "end": { "local": "1998-04-12T12:50:16+07:00", "utc": "1998-04-12T05:50:16Z", "ms": 892360215833.7131 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 02:50 on Sat 11 Apr to 05:23 on Sun 12 Apr.", "fact": "1998-04-10T19:50:07Z → 1998-04-11T22:23:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 11th, 12:02–12:50 on the 12th.", "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 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23928 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Medan, 1998: Saturday 11 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": "1998-04-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-11", "confidence": "determinate" } ], "quote": "In Medan, Caitrī Pūrṇimā 1998 falls on Saturday 11 April. Pūrṇimā runs from 02:50 on Sat 11 Apr to 05:23 on Sun 12 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 793, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "1998-04-14T06:33:30+07:00", "utc": "1998-04-13T23:33:30Z", "ms": 892510409679.8329 }, "end": { "local": "1998-05-15T03:24:52+07:00", "utc": "1998-05-14T20:24:52Z", "ms": 895177492416.1575 } }, "span": { "of": "transit", "start": { "local": "1998-04-14T06:33:30+07:00", "utc": "1998-04-13T23:33:30Z", "ms": 892510409679.8329 }, "end": { "local": "1998-04-14T06:33:30+07:00", "utc": "1998-04-13T23:33:30Z", "ms": 892510409679.8329 } }, "kaala": "day", "days": [ { "local_date": "1998-04-13", "window": { "start": { "local": "1998-04-13T06:20:38+07:00", "utc": "1998-04-12T23:20:38Z", "ms": 892423238062.0494 }, "end": { "local": "1998-04-14T06:20:17+07:00", "utc": "1998-04-13T23:20:17Z", "ms": 892509616981.5457 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1998-04-14", "window": { "start": { "local": "1998-04-14T06:20:17+07:00", "utc": "1998-04-13T23:20:17Z", "ms": 892509616981.5457 }, "end": { "local": "1998-04-15T06:19:56+07:00", "utc": "1998-04-14T23:19:56Z", "ms": 892595996258.455 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 06:33 on Tue 14 Apr.", "fact": "1998-04-13T23:33:30Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:21 on the 13th, and from 06:20 on the 14th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 14th, not the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunrise → only-day · margin 793 s" }, { "step": "ruling", "text": "Vaiśākhī, Medan, 1998: Tuesday 14 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": "1998-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1998-04-14", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "1998-04-14", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Medan, Vaiśākhī 1998 falls on Tuesday 14 April. The Sun enters Meṣa at 06:33 on Tue 14 Apr, and the rule counts the day from sunrise.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/sankashta-chaturthi?on=1998-04-15", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31140, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-04-15T11:54:03+07:00", "utc": "1998-04-15T04:54:03Z", "ms": 892616043295.6448 }, "end": { "local": "1998-04-16T13:26:25+07:00", "utc": "1998-04-16T06:26:25Z", "ms": 892707984738.5857 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-04-15T11:54:03+07:00", "utc": "1998-04-15T04:54:03Z", "ms": 892616043295.6448 }, "end": { "local": "1998-04-16T13:26:25+07:00", "utc": "1998-04-16T06:26:25Z", "ms": 892707984738.5857 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-04-15", "window": { "start": { "local": "1998-04-15T21:16:20+07:00", "utc": "1998-04-15T14:16:20Z", "ms": 892649779923.5526 }, "end": { "local": "1998-04-15T21:16:20+07:00", "utc": "1998-04-15T14:16:20Z", "ms": 892649779923.5526 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-04-16", "window": { "start": { "local": "1998-04-16T22:05:24+07:00", "utc": "1998-04-16T15:05:24Z", "ms": 892739124390.8019 }, "end": { "local": "1998-04-16T22:05:24+07:00", "utc": "1998-04-16T15:05:24Z", "ms": 892739124390.8019 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:54 on Wed 15 Apr to 13:26 on Thu 16 Apr.", "fact": "1998-04-15T04:54:03Z → 1998-04-16T06:26:25Z" }, { "step": "kaala", "text": "Moonrise is at 21:16 on the 15th and 22:05 on the 16th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 15th and is not on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31140 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Medan, 1998: Wednesday 15 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": "1998-04-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-15", "confidence": "determinate" } ], "quote": "In Medan, Saṅkaṣṭa Caturthī 1998 falls on Wednesday 15 April. Caturthī runs from 11:54 on Wed 15 Apr to 13:26 on Thu 16 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/sankashta-chaturthi?on=1998-04-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ekadashi?on=1998-04-23", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8479, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-04-22T11:12:12+07:00", "utc": "1998-04-22T04:12:12Z", "ms": 893218332091.2235 }, "end": { "local": "1998-04-23T08:38:45+07:00", "utc": "1998-04-23T01:38:45Z", "ms": 893295524740.2178 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-04-22T11:12:12+07:00", "utc": "1998-04-22T04:12:12Z", "ms": 893218332091.2235 }, "end": { "local": "1998-04-23T08:38:45+07:00", "utc": "1998-04-23T01:38:45Z", "ms": 893295524740.2178 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-04-22", "window": { "start": { "local": "1998-04-22T06:17:43+07:00", "utc": "1998-04-21T23:17:43Z", "ms": 893200662790.7329 }, "end": { "local": "1998-04-22T06:17:43+07:00", "utc": "1998-04-21T23:17:43Z", "ms": 893200662790.7329 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-04-23", "window": { "start": { "local": "1998-04-23T06:17:26+07:00", "utc": "1998-04-22T23:17:26Z", "ms": 893287045581.9506 }, "end": { "local": "1998-04-23T06:17:26+07:00", "utc": "1998-04-22T23:17:26Z", "ms": 893287045581.9506 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:12 on Wed 22 Apr to 08:39 on Thu 23 Apr.", "fact": "1998-04-22T04:12:12Z → 1998-04-23T01:38:45Z" }, { "step": "kaala", "text": "Sunrise is at 06:18 on the 22nd and 06:17 on the 23rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 22nd and is on the 23rd.", "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 8479 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Medan, 1998: Thursday 23 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": "1998-04-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-23", "confidence": "determinate" } ], "quote": "In Medan, Varūthinī Ekādaśī 1998 falls on Thursday 23 April. Ekādaśī runs from 11:12 on Wed 22 Apr to 08:39 on Thu 23 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-04-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-04-24", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21818, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-04-24T05:34:51+07:00", "utc": "1998-04-23T22:34:51Z", "ms": 893370891305.8745 }, "end": { "local": "1998-04-25T02:07:53+07:00", "utc": "1998-04-24T19:07:53Z", "ms": 893444873019.3925 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-04-24T05:34:51+07:00", "utc": "1998-04-23T22:34:51Z", "ms": 893370891305.8745 }, "end": { "local": "1998-04-25T02:07:53+07:00", "utc": "1998-04-24T19:07:53Z", "ms": 893444873019.3925 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-04-23", "window": { "start": { "local": "1998-04-23T18:30:05+07:00", "utc": "1998-04-23T11:30:05Z", "ms": 893331005236.5787 }, "end": { "local": "1998-04-23T20:04:22+07:00", "utc": "1998-04-23T13:04:22Z", "ms": 893336661722.2755 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1998-04-24", "window": { "start": { "local": "1998-04-24T18:30:00+07:00", "utc": "1998-04-24T11:30:00Z", "ms": 893417399756.0333 }, "end": { "local": "1998-04-24T20:04:15+07:00", "utc": "1998-04-24T13:04:15Z", "ms": 893423054814.2699 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:35 on Fri 24 Apr to 02:08 on Sat 25 Apr.", "fact": "1998-04-23T22:34:51Z → 1998-04-24T19:07:53Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:30–20:04 on the 23rd, 18:30–20:04 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 94 minutes on the 23rd and 94 of 94 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21818 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Medan, 1998: Friday 24 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": "1998-04-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-24", "confidence": "determinate" } ], "quote": "In Medan, Kṛṣṇa Pradoṣa Vrata 1998 falls on Friday 24 April. Trayodaśī runs from 05:35 on Fri 24 Apr to 02:08 on Sat 25 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-04-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/shivaratri?on=1998-04-24", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-24", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 4827, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-04-25T02:07:53+07:00", "utc": "1998-04-24T19:07:53Z", "ms": 893444873019.3925 }, "end": { "local": "1998-04-25T22:26:43+07:00", "utc": "1998-04-25T15:26:43Z", "ms": 893518003188.5973 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-04-25T02:07:53+07:00", "utc": "1998-04-24T19:07:53Z", "ms": 893444873019.3925 }, "end": { "local": "1998-04-25T22:26:43+07:00", "utc": "1998-04-25T15:26:43Z", "ms": 893518003188.5973 } }, "kaala": "nishita", "days": [ { "local_date": "1998-04-24", "window": { "start": { "local": "1998-04-24T23:59:26+07:00", "utc": "1998-04-24T16:59:26Z", "ms": 893437166224.4204 }, "end": { "local": "1998-04-25T00:47:26+07:00", "utc": "1998-04-24T17:47:26Z", "ms": 893440046224.4204 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-04-25", "window": { "start": { "local": "1998-04-25T23:59:16+07:00", "utc": "1998-04-25T16:59:16Z", "ms": 893523555875.9973 }, "end": { "local": "1998-04-26T00:47:16+07:00", "utc": "1998-04-25T17:47:16Z", "ms": 893526435875.9973 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:08 on Sat 25 Apr to 22:27 on Sat 25 Apr.", "fact": "1998-04-24T19:07:53Z → 1998-04-25T15:26:43Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:59–00:47 on the 24th, 23:59–00:47 on the 25th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 24th and 0 of 48 on the 25th.", "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 4827 s" }, { "step": "ruling", "text": "Śivarātri, Medan, 1998: Friday 24 April.", "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": "1998-04-24", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-24", "confidence": "boundary" } ], "quote": "In Medan, Śivarātri 1998 falls on Friday 24 April. Caturdaśī runs from 02:08 on Sat 25 Apr to 22:27 on Sat 25 Apr, and reaches niśītha on neither day.", "cite": "https://ahargana.org/medan/festivals/1998/shivaratri?on=1998-04-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24513, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1998-04-28T11:41:09+07:00", "utc": "1998-04-28T04:41:09Z", "ms": 893738469430.5802 }, "end": { "local": "1998-04-29T08:47:56+07:00", "utc": "1998-04-29T01:47:56Z", "ms": 893814476133.0571 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-04-28T11:41:09+07:00", "utc": "1998-04-28T04:41:09Z", "ms": 893738469430.5802 }, "end": { "local": "1998-04-29T08:47:56+07:00", "utc": "1998-04-29T01:47:56Z", "ms": 893814476133.0571 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-04-28", "window": { "start": { "local": "1998-04-28T18:29:42+07:00", "utc": "1998-04-28T11:29:42Z", "ms": 893762982326.141 }, "end": { "local": "1998-04-28T20:03:52+07:00", "utc": "1998-04-28T13:03:52Z", "ms": 893768631783.9392 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1998-04-29", "window": { "start": { "local": "1998-04-29T18:29:39+07:00", "utc": "1998-04-29T11:29:39Z", "ms": 893849379106.0859 }, "end": { "local": "1998-04-29T20:03:47+07:00", "utc": "1998-04-29T13:03:47Z", "ms": 893855027193.4974 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 11:41 on Tue 28 Apr to 08:48 on Wed 29 Apr.", "fact": "1998-04-28T04:41:09Z → 1998-04-29T01:47:56Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:30–20:04 on the 28th, 18:30–20:04 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 94 of 94 minutes on the 28th and 0 of 94 on the 29th.", "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 24513 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Medan, 1998: Tuesday 28 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": "1998-04-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-28", "confidence": "determinate" } ], "quote": "In Medan, Paraśurāma Jayantī 1998 falls on Tuesday 28 April. Tṛtīyā runs from 11:41 on Tue 28 Apr to 08:48 on Wed 29 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4830, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1998-04-28T11:41:09+07:00", "utc": "1998-04-28T04:41:09Z", "ms": 893738469430.5802 }, "end": { "local": "1998-04-29T08:47:56+07:00", "utc": "1998-04-29T01:47:56Z", "ms": 893814476133.0571 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-04-28T11:41:09+07:00", "utc": "1998-04-28T04:41:09Z", "ms": 893738469430.5802 }, "end": { "local": "1998-04-29T08:47:56+07:00", "utc": "1998-04-29T01:47:56Z", "ms": 893814476133.0571 } }, "kaala": "purvahna", "days": [ { "local_date": "1998-04-28", "window": { "start": { "local": "1998-04-28T06:16:07+07:00", "utc": "1998-04-27T23:16:07Z", "ms": 893718967308.0398 }, "end": { "local": "1998-04-28T10:20:39+07:00", "utc": "1998-04-28T03:20:39Z", "ms": 893733638980.7402 } }, "covered_min": 0, "window_min": 245, "qualifies": false }, { "local_date": "1998-04-29", "window": { "start": { "local": "1998-04-29T06:15:53+07:00", "utc": "1998-04-28T23:15:53Z", "ms": 893805353259.6279 }, "end": { "local": "1998-04-29T10:20:29+07:00", "utc": "1998-04-29T03:20:29Z", "ms": 893820028541.7806 } }, "covered_min": 152, "window_min": 245, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 11:41 on Tue 28 Apr to 08:48 on Wed 29 Apr.", "fact": "1998-04-28T04:41:09Z → 1998-04-29T01:47:56Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:16–10:21 on the 28th, 06:16–10:20 on the 29th.", "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 245 minutes on the 28th and 152 of 245 on the 29th.", "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 4830 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Medan, 1998: Wednesday 29 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": "1998-04-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-29", "confidence": "determinate" } ], "quote": "In Medan, Akṣaya Tṛtīyā 1998 falls on Wednesday 29 April. Tṛtīyā runs from 11:41 on Tue 28 Apr to 08:48 on Wed 29 Apr and covers 152 of 245 minutes of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/vinayaka-chaturthi?on=1998-04-29", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11450, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-04-29T08:47:56+07:00", "utc": "1998-04-29T01:47:56Z", "ms": 893814476133.0571 }, "end": { "local": "1998-04-30T06:32:36+07:00", "utc": "1998-04-29T23:32:36Z", "ms": 893892756031.4309 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-04-29T08:47:56+07:00", "utc": "1998-04-29T01:47:56Z", "ms": 893814476133.0571 }, "end": { "local": "1998-04-30T06:32:36+07:00", "utc": "1998-04-29T23:32:36Z", "ms": 893892756031.4309 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-04-29", "window": { "start": { "local": "1998-04-29T11:58:46+07:00", "utc": "1998-04-29T04:58:46Z", "ms": 893825926182.8569 }, "end": { "local": "1998-04-29T12:46:46+07:00", "utc": "1998-04-29T05:46:46Z", "ms": 893828806182.8569 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-04-30", "window": { "start": { "local": "1998-04-30T11:58:38+07:00", "utc": "1998-04-30T04:58:38Z", "ms": 893912318053.8989 }, "end": { "local": "1998-04-30T12:46:38+07:00", "utc": "1998-04-30T05:46:38Z", "ms": 893915198053.8989 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:48 on Wed 29 Apr to 06:33 on Thu 30 Apr.", "fact": "1998-04-29T01:47:56Z → 1998-04-29T23:32:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 29th, 11:59–12:47 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11450 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Medan, 1998: Wednesday 29 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": "1998-04-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-29", "confidence": "determinate" } ], "quote": "In Medan, Vināyaka Caturthī 1998 falls on Wednesday 29 April. Caturthī runs from 08:48 on Wed 29 Apr to 06:33 on Thu 30 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/vinayaka-chaturthi?on=1998-04-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-04-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19562, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1998-04-30T06:32:36+07:00", "utc": "1998-04-29T23:32:36Z", "ms": 893892756031.4309 }, "end": { "local": "1998-05-01T05:03:05+07:00", "utc": "1998-04-30T22:03:05Z", "ms": 893973784936.6774 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-04-30T06:32:36+07:00", "utc": "1998-04-29T23:32:36Z", "ms": 893892756031.4309 }, "end": { "local": "1998-05-01T05:03:05+07:00", "utc": "1998-04-30T22:03:05Z", "ms": 893973784936.6774 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-04-30", "window": { "start": { "local": "1998-04-30T11:58:38+07:00", "utc": "1998-04-30T04:58:38Z", "ms": 893912318053.8989 }, "end": { "local": "1998-04-30T12:46:38+07:00", "utc": "1998-04-30T05:46:38Z", "ms": 893915198053.8989 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-05-01", "window": { "start": { "local": "1998-05-01T11:58:30+07:00", "utc": "1998-05-01T04:58:30Z", "ms": 893998710435.303 }, "end": { "local": "1998-05-01T12:46:30+07:00", "utc": "1998-05-01T05:46:30Z", "ms": 894001590435.303 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 06:33 on Thu 30 Apr to 05:03 on Fri 1 May.", "fact": "1998-04-29T23:32:36Z → 1998-04-30T22:03:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 30th, 11:59–12:47 on the 1st.", "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 30th and 0 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19562 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Medan, 1998: Thursday 30 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": "1998-04-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-04-30", "confidence": "determinate" } ], "quote": "In Medan, Śaṅkara Jayantī 1998 falls on Thursday 30 April. Pañcamī runs from 06:33 on Thu 30 Apr to 05:03 on Fri 1 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26410, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1998-05-02T04:24:29+07:00", "utc": "1998-05-01T21:24:29Z", "ms": 894057869483.2699 }, "end": { "local": "1998-05-03T04:38:07+07:00", "utc": "1998-05-02T21:38:07Z", "ms": 894145087161.2711 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-02T04:24:29+07:00", "utc": "1998-05-01T21:24:29Z", "ms": 894057869483.2699 }, "end": { "local": "1998-05-03T04:38:07+07:00", "utc": "1998-05-02T21:38:07Z", "ms": 894145087161.2711 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-05-02", "window": { "start": { "local": "1998-05-02T11:58:23+07:00", "utc": "1998-05-02T04:58:23Z", "ms": 894085103332.6578 }, "end": { "local": "1998-05-02T12:46:23+07:00", "utc": "1998-05-02T05:46:23Z", "ms": 894087983332.6578 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-05-03", "window": { "start": { "local": "1998-05-03T11:58:17+07:00", "utc": "1998-05-03T04:58:17Z", "ms": 894171496752.2197 }, "end": { "local": "1998-05-03T12:46:17+07:00", "utc": "1998-05-03T05:46:17Z", "ms": 894174376752.2197 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 04:24 on Sat 2 May to 04:38 on Sun 3 May.", "fact": "1998-05-01T21:24:29Z → 1998-05-02T21:38:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 2nd, 11:58–12:46 on the 3rd.", "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 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 26410 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Medan, 1998: Saturday 2 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gangotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-05-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-02", "confidence": "determinate" } ], "quote": "In Medan, Gaṅgotpatti (Ganga Saptami) 1998 falls on Saturday 2 May. Saptamī runs from 04:24 on Sat 2 May to 04:38 on Sun 3 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-05-07", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12264, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-05-06T09:38:55+07:00", "utc": "1998-05-06T02:38:55Z", "ms": 894422334566.3336 }, "end": { "local": "1998-05-07T12:10:17+07:00", "utc": "1998-05-07T05:10:17Z", "ms": 894517816949.0629 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-06T09:38:55+07:00", "utc": "1998-05-06T02:38:55Z", "ms": 894422334566.3336 }, "end": { "local": "1998-05-07T12:10:17+07:00", "utc": "1998-05-07T05:10:17Z", "ms": 894517816949.0629 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-05-06", "window": { "start": { "local": "1998-05-06T06:14:31+07:00", "utc": "1998-05-05T23:14:31Z", "ms": 894410070756.693 }, "end": { "local": "1998-05-06T06:14:31+07:00", "utc": "1998-05-05T23:14:31Z", "ms": 894410070756.693 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-05-07", "window": { "start": { "local": "1998-05-07T06:14:21+07:00", "utc": "1998-05-06T23:14:21Z", "ms": 894496461329.3693 }, "end": { "local": "1998-05-07T06:14:21+07:00", "utc": "1998-05-06T23:14:21Z", "ms": 894496461329.3693 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:39 on Wed 6 May to 12:10 on Thu 7 May.", "fact": "1998-05-06T02:38:55Z → 1998-05-07T05:10:17Z" }, { "step": "kaala", "text": "Sunrise is at 06:15 on the 6th and 06:14 on the 7th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 6th and is on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 12264 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Medan, 1998: Thursday 7 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": "1998-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-07", "confidence": "determinate" } ], "quote": "In Medan, Mohinī Ekādaśī 1998 falls on Thursday 7 May. Ekādaśī runs from 09:39 on Wed 6 May to 12:10 on Thu 7 May and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-05-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 741, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1998-05-07T12:10:17+07:00", "utc": "1998-05-07T05:10:17Z", "ms": 894517816949.0629 }, "end": { "local": "1998-05-08T14:46:14+07:00", "utc": "1998-05-08T07:46:14Z", "ms": 894613573611.0115 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-07T12:10:17+07:00", "utc": "1998-05-07T05:10:17Z", "ms": 894517816949.0629 }, "end": { "local": "1998-05-08T14:46:14+07:00", "utc": "1998-05-08T07:46:14Z", "ms": 894613573611.0115 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-05-07", "window": { "start": { "local": "1998-05-07T11:57:56+07:00", "utc": "1998-05-07T04:57:56Z", "ms": 894517075778.2195 }, "end": { "local": "1998-05-07T12:45:56+07:00", "utc": "1998-05-07T05:45:56Z", "ms": 894519955778.2195 } }, "covered_min": 36, "window_min": 48, "qualifies": true }, { "local_date": "1998-05-08", "window": { "start": { "local": "1998-05-08T11:57:52+07:00", "utc": "1998-05-08T04:57:52Z", "ms": 894603471901.8623 }, "end": { "local": "1998-05-08T12:45:52+07:00", "utc": "1998-05-08T05:45:52Z", "ms": 894606351901.8623 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 12:10 on Thu 7 May to 14:46 on Fri 8 May.", "fact": "1998-05-07T05:10:17Z → 1998-05-08T07:46:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 7th, 11:58–12:46 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 36 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 741 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Medan, 1998: Thursday 7 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": "1998-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-07", "confidence": "determinate" } ], "quote": "In Medan, Paraśurāma Dvādaśī 1998 falls on Thursday 7 May. Dvādaśī runs from 12:10 on Thu 7 May to 14:46 on Fri 8 May and covers 36 of 48 minutes 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/medan/festivals/1998/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": "/medan/festivals/1998/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 741, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1998-05-07T12:10:17+07:00", "utc": "1998-05-07T05:10:17Z", "ms": 894517816949.0629 }, "end": { "local": "1998-05-08T14:46:14+07:00", "utc": "1998-05-08T07:46:14Z", "ms": 894613573611.0115 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-07T12:10:17+07:00", "utc": "1998-05-07T05:10:17Z", "ms": 894517816949.0629 }, "end": { "local": "1998-05-08T14:46:14+07:00", "utc": "1998-05-08T07:46:14Z", "ms": 894613573611.0115 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-05-07", "window": { "start": { "local": "1998-05-07T11:57:56+07:00", "utc": "1998-05-07T04:57:56Z", "ms": 894517075778.2195 }, "end": { "local": "1998-05-07T12:45:56+07:00", "utc": "1998-05-07T05:45:56Z", "ms": 894519955778.2195 } }, "covered_min": 36, "window_min": 48, "qualifies": true }, { "local_date": "1998-05-08", "window": { "start": { "local": "1998-05-08T11:57:52+07:00", "utc": "1998-05-08T04:57:52Z", "ms": 894603471901.8623 }, "end": { "local": "1998-05-08T12:45:52+07:00", "utc": "1998-05-08T05:45:52Z", "ms": 894606351901.8623 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 12:10 on Thu 7 May to 14:46 on Fri 8 May.", "fact": "1998-05-07T05:10:17Z → 1998-05-08T07:46:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 7th, 11:58–12:46 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 36 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 741 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Medan, 1998: Thursday 7 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": "1998-05-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-07", "confidence": "determinate" } ], "quote": "In Medan, Rukmiṇī Dvādaśī 1998 falls on Thursday 7 May. Dvādaśī runs from 12:10 on Thu 7 May to 14:46 on Fri 8 May and covers 36 of 48 minutes 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/medan/festivals/1998/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": "/medan/festivals/1998/pradosha-vrata?on=1998-05-08", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4408, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-05-08T14:46:14+07:00", "utc": "1998-05-08T07:46:14Z", "ms": 894613573611.0115 }, "end": { "local": "1998-05-09T17:16:05+07:00", "utc": "1998-05-09T10:16:05Z", "ms": 894708964981.4753 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-08T14:46:14+07:00", "utc": "1998-05-08T07:46:14Z", "ms": 894613573611.0115 }, "end": { "local": "1998-05-09T17:16:05+07:00", "utc": "1998-05-09T10:16:05Z", "ms": 894708964981.4753 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-05-08", "window": { "start": { "local": "1998-05-08T18:29:31+07:00", "utc": "1998-05-08T11:29:31Z", "ms": 894626971287.7834 }, "end": { "local": "1998-05-08T20:03:28+07:00", "utc": "1998-05-08T13:03:28Z", "ms": 894632607692.5898 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1998-05-09", "window": { "start": { "local": "1998-05-09T18:29:33+07:00", "utc": "1998-05-09T11:29:33Z", "ms": 894713372842.992 }, "end": { "local": "1998-05-09T20:03:28+07:00", "utc": "1998-05-09T13:03:28Z", "ms": 894719008031.9341 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:46 on Fri 8 May to 17:16 on Sat 9 May.", "fact": "1998-05-08T07:46:14Z → 1998-05-09T10:16:05Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:30–20:03 on the 8th, 18:30–20:03 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 94 of 94 minutes on the 8th and 0 of 94 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 4408 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Medan, 1998: Friday 8 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": "1998-05-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-08", "confidence": "determinate" } ], "quote": "In Medan, Śukla Pradoṣa Vrata 1998 falls on Friday 8 May. Trayodaśī runs from 14:46 on Fri 8 May to 17:16 on Sat 9 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-05-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1884, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-05-09T17:16:05+07:00", "utc": "1998-05-09T10:16:05Z", "ms": 894708964981.4753 }, "end": { "local": "1998-05-10T19:32:05+07:00", "utc": "1998-05-10T12:32:05Z", "ms": 894803524613.9907 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-09T17:16:05+07:00", "utc": "1998-05-09T10:16:05Z", "ms": 894708964981.4753 }, "end": { "local": "1998-05-10T19:32:05+07:00", "utc": "1998-05-10T12:32:05Z", "ms": 894803524613.9907 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-05-09", "window": { "start": { "local": "1998-05-09T18:29:33+07:00", "utc": "1998-05-09T11:29:33Z", "ms": 894713372842.992 }, "end": { "local": "1998-05-09T20:03:28+07:00", "utc": "1998-05-09T13:03:28Z", "ms": 894719008031.9341 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1998-05-10", "window": { "start": { "local": "1998-05-10T18:29:35+07:00", "utc": "1998-05-10T11:29:35Z", "ms": 894799774895.2708 }, "end": { "local": "1998-05-10T20:03:29+07:00", "utc": "1998-05-10T13:03:29Z", "ms": 894805408886.7256 } }, "covered_min": 62, "window_min": 94, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 17:16 on Sat 9 May to 19:32 on Sun 10 May.", "fact": "1998-05-09T10:16:05Z → 1998-05-10T12:32:05Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:30–20:03 on the 9th, 18:30–20:03 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 9th and 62 of 94 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both evenings qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 1884 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Medan, 1998: Sunday 10 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "nrisimha-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Nrsimha caturdasi (pradosa vyapini — if it occurs on two successive days, the second day is to be observed, special when combined with naksatra 'Svati', yoga 'Siddhi' and 'Saturday')." } ], "not_evaluated": "The row calls the day special with Svātī nakṣatra, Siddhi yoga and a Saturday; none is tested.", "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-05-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-10", "confidence": "determinate" } ], "quote": "In Medan, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 1998 falls on Sunday 10 May. Caturdaśī runs from 17:16 on Sat 9 May to 19:32 on Sun 10 May and covers 62 of 94 minutes of pradoṣa that evening. It also reaches the previous evening for 94 minutes; by the rule the second evening is taken.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24379, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-05-10T19:32:05+07:00", "utc": "1998-05-10T12:32:05Z", "ms": 894803524613.9907 }, "end": { "local": "1998-05-11T21:29:21+07:00", "utc": "1998-05-11T14:29:21Z", "ms": 894896960874.5787 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-10T19:32:05+07:00", "utc": "1998-05-10T12:32:05Z", "ms": 894803524613.9907 }, "end": { "local": "1998-05-11T21:29:21+07:00", "utc": "1998-05-11T14:29:21Z", "ms": 894896960874.5787 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-05-10", "window": { "start": { "local": "1998-05-10T11:57:46+07:00", "utc": "1998-05-10T04:57:46Z", "ms": 894776265827.6642 }, "end": { "local": "1998-05-10T12:45:46+07:00", "utc": "1998-05-10T05:45:46Z", "ms": 894779145827.6642 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-05-11", "window": { "start": { "local": "1998-05-11T11:57:44+07:00", "utc": "1998-05-11T04:57:44Z", "ms": 894862663639.0398 }, "end": { "local": "1998-05-11T12:45:44+07:00", "utc": "1998-05-11T05:45:44Z", "ms": 894865543639.0398 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 19:32 on Sun 10 May to 21:29 on Mon 11 May.", "fact": "1998-05-10T12:32:05Z → 1998-05-11T14:29:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 10th, 11:58–12:46 on the 11th.", "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 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24379 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Medan, 1998: Monday 11 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": "1998-05-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-11", "confidence": "determinate" } ], "quote": "In Medan, Buddha Pūrṇimā 1998 falls on Monday 11 May. Pūrṇimā runs from 19:32 on Sun 10 May to 21:29 on Mon 11 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24379, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-05-10T19:32:05+07:00", "utc": "1998-05-10T12:32:05Z", "ms": 894803524613.9907 }, "end": { "local": "1998-05-11T21:29:21+07:00", "utc": "1998-05-11T14:29:21Z", "ms": 894896960874.5787 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-10T19:32:05+07:00", "utc": "1998-05-10T12:32:05Z", "ms": 894803524613.9907 }, "end": { "local": "1998-05-11T21:29:21+07:00", "utc": "1998-05-11T14:29:21Z", "ms": 894896960874.5787 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-05-10", "window": { "start": { "local": "1998-05-10T11:57:46+07:00", "utc": "1998-05-10T04:57:46Z", "ms": 894776265827.6642 }, "end": { "local": "1998-05-10T12:45:46+07:00", "utc": "1998-05-10T05:45:46Z", "ms": 894779145827.6642 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-05-11", "window": { "start": { "local": "1998-05-11T11:57:44+07:00", "utc": "1998-05-11T04:57:44Z", "ms": 894862663639.0398 }, "end": { "local": "1998-05-11T12:45:44+07:00", "utc": "1998-05-11T05:45:44Z", "ms": 894865543639.0398 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 19:32 on Sun 10 May to 21:29 on Mon 11 May.", "fact": "1998-05-10T12:32:05Z → 1998-05-11T14:29:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 10th, 11:58–12:46 on the 11th.", "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 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24379 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Medan, 1998: Monday 11 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": "1998-05-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-11", "confidence": "determinate" } ], "quote": "In Medan, Sampat Gaurī Vrata 1998 falls on Monday 11 May. Pūrṇimā runs from 19:32 on Sun 10 May to 21:29 on Mon 11 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/sankashta-chaturthi?on=1998-05-15", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13867, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-05-15T01:09:16+07:00", "utc": "1998-05-14T18:09:16Z", "ms": 895169355686.686 }, "end": { "local": "1998-05-16T01:35:37+07:00", "utc": "1998-05-15T18:35:37Z", "ms": 895257336707.7429 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-15T01:09:16+07:00", "utc": "1998-05-14T18:09:16Z", "ms": 895169355686.686 }, "end": { "local": "1998-05-16T01:35:37+07:00", "utc": "1998-05-15T18:35:37Z", "ms": 895257336707.7429 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-05-14", "window": { "start": { "local": "1998-05-14T20:52:58+07:00", "utc": "1998-05-14T13:52:58Z", "ms": 895153977929.368 }, "end": { "local": "1998-05-14T20:52:58+07:00", "utc": "1998-05-14T13:52:58Z", "ms": 895153977929.368 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-05-15", "window": { "start": { "local": "1998-05-15T21:44:29+07:00", "utc": "1998-05-15T14:44:29Z", "ms": 895243469280.763 }, "end": { "local": "1998-05-15T21:44:29+07:00", "utc": "1998-05-15T14:44:29Z", "ms": 895243469280.763 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:09 on Fri 15 May to 01:36 on Sat 16 May.", "fact": "1998-05-14T18:09:16Z → 1998-05-15T18:35:37Z" }, { "step": "kaala", "text": "Moonrise is at 20:53 on the 14th and 21:44 on the 15th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 14th and is on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13867 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Medan, 1998: Friday 15 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": "1998-05-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-15", "confidence": "determinate" } ], "quote": "In Medan, Saṅkaṣṭa Caturthī 1998 falls on Friday 15 May. Caturthī runs from 01:09 on Fri 15 May to 01:36 on Sat 16 May and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/sankashta-chaturthi?on=1998-05-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ekadashi?on=1998-05-22", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33847, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-05-21T18:27:04+07:00", "utc": "1998-05-21T11:27:04Z", "ms": 895750024427.4685 }, "end": { "local": "1998-05-22T15:37:24+07:00", "utc": "1998-05-22T08:37:24Z", "ms": 895826244036.4429 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-21T18:27:04+07:00", "utc": "1998-05-21T11:27:04Z", "ms": 895750024427.4685 }, "end": { "local": "1998-05-22T15:37:24+07:00", "utc": "1998-05-22T08:37:24Z", "ms": 895826244036.4429 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-05-21", "window": { "start": { "local": "1998-05-21T06:13:16+07:00", "utc": "1998-05-20T23:13:16Z", "ms": 895705996412.6044 }, "end": { "local": "1998-05-21T06:13:16+07:00", "utc": "1998-05-20T23:13:16Z", "ms": 895705996412.6044 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-05-22", "window": { "start": { "local": "1998-05-22T06:13:17+07:00", "utc": "1998-05-21T23:13:17Z", "ms": 895792396679.6606 }, "end": { "local": "1998-05-22T06:13:17+07:00", "utc": "1998-05-21T23:13:17Z", "ms": 895792396679.6606 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:27 on Thu 21 May to 15:37 on Fri 22 May.", "fact": "1998-05-21T11:27:04Z → 1998-05-22T08:37:24Z" }, { "step": "kaala", "text": "Sunrise is at 06:13 on the 21st and 06:13 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 33847 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Medan, 1998: Friday 22 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": "1998-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-22", "confidence": "determinate" } ], "quote": "In Medan, Aparā Ekādaśī 1998 falls on Friday 22 May. Ekādaśī runs from 18:27 on Thu 21 May to 15:37 on Fri 22 May and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-05-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-05-23", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21716, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-05-23T12:28:51+07:00", "utc": "1998-05-23T05:28:51Z", "ms": 895901330827.1864 }, "end": { "local": "1998-05-24T09:09:00+07:00", "utc": "1998-05-24T02:09:00Z", "ms": 895975739599.6908 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-23T12:28:51+07:00", "utc": "1998-05-23T05:28:51Z", "ms": 895901330827.1864 }, "end": { "local": "1998-05-24T09:09:00+07:00", "utc": "1998-05-24T02:09:00Z", "ms": 895975739599.6908 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-05-23", "window": { "start": { "local": "1998-05-23T18:30:47+07:00", "utc": "1998-05-23T11:30:47Z", "ms": 895923046669.8224 }, "end": { "local": "1998-05-23T20:04:27+07:00", "utc": "1998-05-23T13:04:27Z", "ms": 895928666997.4427 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1998-05-24", "window": { "start": { "local": "1998-05-24T18:30:55+07:00", "utc": "1998-05-24T11:30:55Z", "ms": 896009455485.1395 }, "end": { "local": "1998-05-24T20:04:35+07:00", "utc": "1998-05-24T13:04:35Z", "ms": 896015074925.1218 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:29 on Sat 23 May to 09:09 on Sun 24 May.", "fact": "1998-05-23T05:28:51Z → 1998-05-24T02:09:00Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:31–20:04 on the 23rd, 18:31–20:05 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 23rd and 0 of 94 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21716 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Medan, 1998: Saturday 23 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": "1998-05-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-23", "confidence": "determinate" } ], "quote": "In Medan, Kṛṣṇa Pradoṣa Vrata 1998 falls on Saturday 23 May. Trayodaśī runs from 12:29 on Sat 23 May to 09:09 on Sun 24 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-05-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/shivaratri?on=1998-05-24", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18040, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-05-24T09:09:00+07:00", "utc": "1998-05-24T02:09:00Z", "ms": 895975739599.6908 }, "end": { "local": "1998-05-25T05:46:49+07:00", "utc": "1998-05-24T22:46:49Z", "ms": 896050008646.9736 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-24T09:09:00+07:00", "utc": "1998-05-24T02:09:00Z", "ms": 895975739599.6908 }, "end": { "local": "1998-05-25T05:46:49+07:00", "utc": "1998-05-24T22:46:49Z", "ms": 896050008646.9736 } }, "kaala": "nishita", "days": [ { "local_date": "1998-05-23", "window": { "start": { "local": "1998-05-23T23:58:03+07:00", "utc": "1998-05-23T16:58:03Z", "ms": 895942682898.3987 }, "end": { "local": "1998-05-24T00:46:03+07:00", "utc": "1998-05-23T17:46:03Z", "ms": 895945562898.3987 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-05-24", "window": { "start": { "local": "1998-05-24T23:58:08+07:00", "utc": "1998-05-24T16:58:08Z", "ms": 896029088385.073 }, "end": { "local": "1998-05-25T00:46:08+07:00", "utc": "1998-05-24T17:46:08Z", "ms": 896031968385.073 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:09 on Sun 24 May to 05:47 on Mon 25 May.", "fact": "1998-05-24T02:09:00Z → 1998-05-24T22:46:49Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:58–00:46 on the 23rd, 23:58–00:46 on the 24th.", "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 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 night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18040 s" }, { "step": "ruling", "text": "Śivarātri, Medan, 1998: Sunday 24 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": "1998-05-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-24", "confidence": "determinate" } ], "quote": "In Medan, Śivarātri 1998 falls on Sunday 24 May. Caturdaśī runs from 09:09 on Sun 24 May to 05:47 on Mon 25 May and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/shivaratri?on=1998-05-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23402, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1998-05-27T21:07:18+07:00", "utc": "1998-05-27T14:07:18Z", "ms": 896278038307.5594 }, "end": { "local": "1998-05-28T19:16:35+07:00", "utc": "1998-05-28T12:16:35Z", "ms": 896357795191.0797 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-27T21:07:18+07:00", "utc": "1998-05-27T14:07:18Z", "ms": 896278038307.5594 }, "end": { "local": "1998-05-28T19:16:35+07:00", "utc": "1998-05-28T12:16:35Z", "ms": 896357795191.0797 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-05-27", "window": { "start": { "local": "1998-05-27T11:58:26+07:00", "utc": "1998-05-27T04:58:26Z", "ms": 896245105866.7777 }, "end": { "local": "1998-05-27T12:46:26+07:00", "utc": "1998-05-27T05:46:26Z", "ms": 896247985866.7777 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-05-28", "window": { "start": { "local": "1998-05-28T11:58:33+07:00", "utc": "1998-05-28T04:58:33Z", "ms": 896331513006.6758 }, "end": { "local": "1998-05-28T12:46:33+07:00", "utc": "1998-05-28T05:46:33Z", "ms": 896334393006.6758 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 21:07 on Wed 27 May to 19:17 on Thu 28 May.", "fact": "1998-05-27T14:07:18Z → 1998-05-28T12:16:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 27th, 11:59–12:47 on the 28th.", "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 27th and 48 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 23402 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Medan, 1998: Thursday 28 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": "1998-05-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-28", "confidence": "determinate" } ], "quote": "In Medan, Rambhā Tṛtīyā 1998 falls on Thursday 28 May. Tṛtīyā runs from 21:07 on Wed 27 May to 19:17 on Thu 28 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/vinayaka-chaturthi?on=1998-05-29", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19461, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-05-28T19:16:35+07:00", "utc": "1998-05-28T12:16:35Z", "ms": 896357795191.0797 }, "end": { "local": "1998-05-29T18:11:01+07:00", "utc": "1998-05-29T11:11:01Z", "ms": 896440261355.5195 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-28T19:16:35+07:00", "utc": "1998-05-28T12:16:35Z", "ms": 896357795191.0797 }, "end": { "local": "1998-05-29T18:11:01+07:00", "utc": "1998-05-29T11:11:01Z", "ms": 896440261355.5195 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-05-28", "window": { "start": { "local": "1998-05-28T11:58:33+07:00", "utc": "1998-05-28T04:58:33Z", "ms": 896331513006.6758 }, "end": { "local": "1998-05-28T12:46:33+07:00", "utc": "1998-05-28T05:46:33Z", "ms": 896334393006.6758 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-05-29", "window": { "start": { "local": "1998-05-29T11:58:41+07:00", "utc": "1998-05-29T04:58:41Z", "ms": 896417920594.0094 }, "end": { "local": "1998-05-29T12:46:41+07:00", "utc": "1998-05-29T05:46:41Z", "ms": 896420800594.0094 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:17 on Thu 28 May to 18:11 on Fri 29 May.", "fact": "1998-05-28T12:16:35Z → 1998-05-29T11:11:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 28th, 11:59–12:47 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19461 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Medan, 1998: Friday 29 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": "1998-05-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-29", "confidence": "determinate" } ], "quote": "In Medan, Vināyaka Caturthī 1998 falls on Friday 29 May. Caturthī runs from 19:17 on Thu 28 May to 18:11 on Fri 29 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/vinayaka-chaturthi?on=1998-05-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18504, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1998-05-30T17:55:12+07:00", "utc": "1998-05-30T10:55:12Z", "ms": 896525712349.1454 }, "end": { "local": "1998-05-31T18:29:41+07:00", "utc": "1998-05-31T11:29:41Z", "ms": 896614180839.0237 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-30T17:55:12+07:00", "utc": "1998-05-30T10:55:12Z", "ms": 896525712349.1454 }, "end": { "local": "1998-05-31T18:29:41+07:00", "utc": "1998-05-31T11:29:41Z", "ms": 896614180839.0237 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-05-30", "window": { "start": { "local": "1998-05-30T11:58:49+07:00", "utc": "1998-05-30T04:58:49Z", "ms": 896504328611.6736 }, "end": { "local": "1998-05-30T12:46:49+07:00", "utc": "1998-05-30T05:46:49Z", "ms": 896507208611.6736 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-05-31", "window": { "start": { "local": "1998-05-31T11:58:57+07:00", "utc": "1998-05-31T04:58:57Z", "ms": 896590737042.9207 }, "end": { "local": "1998-05-31T12:46:57+07:00", "utc": "1998-05-31T05:46:57Z", "ms": 896593617042.9207 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 17:55 on Sat 30 May to 18:30 on Sun 31 May.", "fact": "1998-05-30T10:55:12Z → 1998-05-31T11:29:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 30th, 11:59–12:47 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 30th and 48 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18504 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Medan, 1998: Sunday 31 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": "1998-05-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-31", "confidence": "determinate" } ], "quote": "In Medan, Araṇya Gaurī Vrata 1998 falls on Sunday 31 May. Ṣaṣṭhī runs from 17:55 on Sat 30 May to 18:30 on Sun 31 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-05-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18504, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1998-05-30T17:55:12+07:00", "utc": "1998-05-30T10:55:12Z", "ms": 896525712349.1454 }, "end": { "local": "1998-05-31T18:29:41+07:00", "utc": "1998-05-31T11:29:41Z", "ms": 896614180839.0237 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1998-05-30T17:55:12+07:00", "utc": "1998-05-30T10:55:12Z", "ms": 896525712349.1454 }, "end": { "local": "1998-05-31T18:29:41+07:00", "utc": "1998-05-31T11:29:41Z", "ms": 896614180839.0237 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-05-30", "window": { "start": { "local": "1998-05-30T11:58:49+07:00", "utc": "1998-05-30T04:58:49Z", "ms": 896504328611.6736 }, "end": { "local": "1998-05-30T12:46:49+07:00", "utc": "1998-05-30T05:46:49Z", "ms": 896507208611.6736 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-05-31", "window": { "start": { "local": "1998-05-31T11:58:57+07:00", "utc": "1998-05-31T04:58:57Z", "ms": 896590737042.9207 }, "end": { "local": "1998-05-31T12:46:57+07:00", "utc": "1998-05-31T05:46:57Z", "ms": 896593617042.9207 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 17:55 on Sat 30 May to 18:30 on Sun 31 May.", "fact": "1998-05-30T10:55:12Z → 1998-05-31T11:29:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 30th, 11:59–12:47 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 30th and 48 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18504 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Medan, 1998: Sunday 31 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": "1998-05-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-05-31", "confidence": "determinate" } ], "quote": "In Medan, Skanda Ṣaṣṭhī (Jyaiṣṭha) 1998 falls on Sunday 31 May. Ṣaṣṭhī runs from 17:55 on Sat 30 May to 18:30 on Sun 31 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-06-05", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-06-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4054, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-06-05T02:40:16+07:00", "utc": "1998-06-04T19:40:16Z", "ms": 896989215833.6578 }, "end": { "local": "1998-06-06T05:06:56+07:00", "utc": "1998-06-05T22:06:56Z", "ms": 897084416471.476 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1998-06-05T02:40:16+07:00", "utc": "1998-06-04T19:40:16Z", "ms": 896989215833.6578 }, "end": { "local": "1998-06-06T05:06:56+07:00", "utc": "1998-06-05T22:06:56Z", "ms": 897084416471.476 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-06-05", "window": { "start": { "local": "1998-06-05T06:14:22+07:00", "utc": "1998-06-04T23:14:22Z", "ms": 897002061635.8949 }, "end": { "local": "1998-06-05T06:14:22+07:00", "utc": "1998-06-04T23:14:22Z", "ms": 897002061635.8949 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-06-06", "window": { "start": { "local": "1998-06-06T06:14:30+07:00", "utc": "1998-06-05T23:14:30Z", "ms": 897088470062.899 }, "end": { "local": "1998-06-06T06:14:30+07:00", "utc": "1998-06-05T23:14:30Z", "ms": 897088470062.899 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:40 on Fri 5 Jun to 05:07 on Sat 6 Jun.", "fact": "1998-06-04T19:40:16Z → 1998-06-05T22:06:56Z" }, { "step": "kaala", "text": "Sunrise is at 06:14 on the 5th and 06:15 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 4054 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Medan, 1998: Friday 5 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": "1998-06-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-06-05", "confidence": "determinate" } ], "quote": "In Medan, Nirjalā Ekādaśī 1998 falls on Friday 5 June. Ekādaśī runs from 02:40 on Fri 5 Jun to 05:07 on Sat 6 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-06-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-06-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16932, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1998-06-06T05:06:56+07:00", "utc": "1998-06-05T22:06:56Z", "ms": 897084416471.476 }, "end": { "local": "1998-06-07T07:17:54+07:00", "utc": "1998-06-07T00:17:54Z", "ms": 897178673770.5739 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1998-06-06T05:06:56+07:00", "utc": "1998-06-05T22:06:56Z", "ms": 897084416471.476 }, "end": { "local": "1998-06-07T07:17:54+07:00", "utc": "1998-06-07T00:17:54Z", "ms": 897178673770.5739 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-06-06", "window": { "start": { "local": "1998-06-06T11:59:55+07:00", "utc": "1998-06-06T04:59:55Z", "ms": 897109195390.4814 }, "end": { "local": "1998-06-06T12:47:55+07:00", "utc": "1998-06-06T05:47:55Z", "ms": 897112075390.4814 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-06-07", "window": { "start": { "local": "1998-06-07T12:00:06+07:00", "utc": "1998-06-07T05:00:06Z", "ms": 897195606254.7476 }, "end": { "local": "1998-06-07T12:48:06+07:00", "utc": "1998-06-07T05:48:06Z", "ms": 897198486254.7476 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 05:07 on Sat 6 Jun to 07:18 on Sun 7 Jun.", "fact": "1998-06-05T22:06:56Z → 1998-06-07T00:17:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 6th, 12:00–12:48 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 16932 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Medan, 1998: Saturday 6 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-rama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Sri Rama dvadasi (purvaviddha), Campaka dvadasi (Orissa) (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-06-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-06-06", "confidence": "determinate" } ], "quote": "In Medan, Śrī Rāma Dvādaśī 1998 falls on Saturday 6 June. Dvādaśī runs from 05:07 on Sat 6 Jun to 07:18 on Sun 7 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/pradosha-vrata?on=1998-06-07", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-06-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34096, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-06-07T07:17:54+07:00", "utc": "1998-06-07T00:17:54Z", "ms": 897178673770.5739 }, "end": { "local": "1998-06-08T09:05:31+07:00", "utc": "1998-06-08T02:05:31Z", "ms": 897271530698.9602 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1998-06-07T07:17:54+07:00", "utc": "1998-06-07T00:17:54Z", "ms": 897178673770.5739 }, "end": { "local": "1998-06-08T09:05:31+07:00", "utc": "1998-06-08T02:05:31Z", "ms": 897271530698.9602 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-06-07", "window": { "start": { "local": "1998-06-07T18:33:34+07:00", "utc": "1998-06-07T11:33:34Z", "ms": 897219213594.4442 }, "end": { "local": "1998-06-07T20:07:04+07:00", "utc": "1998-06-07T13:07:04Z", "ms": 897224823538.7487 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "1998-06-08", "window": { "start": { "local": "1998-06-08T18:33:47+07:00", "utc": "1998-06-08T11:33:47Z", "ms": 897305626622.924 }, "end": { "local": "1998-06-08T20:07:16+07:00", "utc": "1998-06-08T13:07:16Z", "ms": 897311236117.4822 } }, "covered_min": 0, "window_min": 93, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:18 on Sun 7 Jun to 09:06 on Mon 8 Jun.", "fact": "1998-06-07T00:17:54Z → 1998-06-08T02:05:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:34–20:07 on the 7th, 18:34–20:07 on the 8th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 93 of 93 minutes on the 7th and 0 of 93 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34096 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Medan, 1998: Sunday 7 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": "1998-06-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-06-07", "confidence": "determinate" } ], "quote": "In Medan, Śukla Pradoṣa Vrata 1998 falls on Sunday 7 June. Trayodaśī runs from 07:18 on Sun 7 Jun to 09:06 on Mon 8 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-06-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-06-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26156, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-06-09T10:25:55+07:00", "utc": "1998-06-09T03:25:55Z", "ms": 897362754896.7693 }, "end": { "local": "1998-06-10T11:18:17+07:00", "utc": "1998-06-10T04:18:17Z", "ms": 897452297092.6625 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1998-06-09T10:25:55+07:00", "utc": "1998-06-09T03:25:55Z", "ms": 897362754896.7693 }, "end": { "local": "1998-06-10T11:18:17+07:00", "utc": "1998-06-10T04:18:17Z", "ms": 897452297092.6625 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-06-09", "window": { "start": { "local": "1998-06-09T18:34:00+07:00", "utc": "1998-06-09T11:34:00Z", "ms": 897392039785.1495 }, "end": { "local": "1998-06-09T20:07:29+07:00", "utc": "1998-06-09T13:07:29Z", "ms": 897397648862.4878 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "1998-06-10", "window": { "start": { "local": "1998-06-10T18:34:13+07:00", "utc": "1998-06-10T11:34:13Z", "ms": 897478453062.7256 }, "end": { "local": "1998-06-10T20:07:42+07:00", "utc": "1998-06-10T13:07:42Z", "ms": 897484061755.657 } }, "covered_min": 0, "window_min": 93, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:26 on Tue 9 Jun to 11:18 on Wed 10 Jun.", "fact": "1998-06-09T03:25:55Z → 1998-06-10T04:18:17Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:34–20:07 on the 9th, 18:34–20:08 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 93 of 93 minutes on the 9th and 0 of 93 on the 10th.", "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 26156 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Medan, 1998: Tuesday 9 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": "1998-06-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-06-09", "confidence": "determinate" } ], "quote": "In Medan, Vaṭa Sāvitrī Vrata 1998 falls on Tuesday 9 June. Pūrṇimā runs from 10:26 on Tue 9 Jun to 11:18 on Wed 10 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/sankashta-chaturthi?on=1998-06-13", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-06-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36161, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-06-13T11:22:56+07:00", "utc": "1998-06-13T04:22:56Z", "ms": 897711775571.6204 }, "end": { "local": "1998-06-14T10:40:26+07:00", "utc": "1998-06-14T03:40:26Z", "ms": 897795626474.4084 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-06-13T11:22:56+07:00", "utc": "1998-06-13T04:22:56Z", "ms": 897711775571.6204 }, "end": { "local": "1998-06-14T10:40:26+07:00", "utc": "1998-06-14T03:40:26Z", "ms": 897795626474.4084 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-06-13", "window": { "start": { "local": "1998-06-13T21:25:36+07:00", "utc": "1998-06-13T14:25:36Z", "ms": 897747936111.0978 }, "end": { "local": "1998-06-13T21:25:36+07:00", "utc": "1998-06-13T14:25:36Z", "ms": 897747936111.0978 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-06-14", "window": { "start": { "local": "1998-06-14T22:17:36+07:00", "utc": "1998-06-14T15:17:36Z", "ms": 897837456316.6733 }, "end": { "local": "1998-06-14T22:17:36+07:00", "utc": "1998-06-14T15:17:36Z", "ms": 897837456316.6733 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:23 on Sat 13 Jun to 10:40 on Sun 14 Jun.", "fact": "1998-06-13T04:22:56Z → 1998-06-14T03:40:26Z" }, { "step": "kaala", "text": "Moonrise is at 21:26 on the 13th and 22:18 on the 14th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 13th and is not on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36161 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Medan, 1998: Saturday 13 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": "1998-06-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-06-13", "confidence": "determinate" } ], "quote": "In Medan, Saṅkaṣṭa Caturthī 1998 falls on Saturday 13 June. Caturthī runs from 11:23 on Sat 13 Jun to 10:40 on Sun 14 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/sankashta-chaturthi?on=1998-06-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ekadashi?on=1998-06-20", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-06-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23353, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-06-19T23:47:52+07:00", "utc": "1998-06-19T16:47:52Z", "ms": 898274872350.8702 }, "end": { "local": "1998-06-20T21:06:13+07:00", "utc": "1998-06-20T14:06:13Z", "ms": 898351573005.1389 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-06-19T23:47:52+07:00", "utc": "1998-06-19T16:47:52Z", "ms": 898274872350.8702 }, "end": { "local": "1998-06-20T21:06:13+07:00", "utc": "1998-06-20T14:06:13Z", "ms": 898351573005.1389 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-06-20", "window": { "start": { "local": "1998-06-20T06:17:05+07:00", "utc": "1998-06-19T23:17:05Z", "ms": 898298225151.8911 }, "end": { "local": "1998-06-20T06:17:05+07:00", "utc": "1998-06-19T23:17:05Z", "ms": 898298225151.8911 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-06-21", "window": { "start": { "local": "1998-06-21T06:17:18+07:00", "utc": "1998-06-20T23:17:18Z", "ms": 898384638137.5201 }, "end": { "local": "1998-06-21T06:17:18+07:00", "utc": "1998-06-20T23:17:18Z", "ms": 898384638137.5201 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:48 on Fri 19 Jun to 21:06 on Sat 20 Jun.", "fact": "1998-06-19T16:47:52Z → 1998-06-20T14:06:13Z" }, { "step": "kaala", "text": "Sunrise is at 06:17 on the 20th and 06:17 on the 21st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 20th and is not on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23353 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Medan, 1998: Saturday 20 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": "1998-06-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-06-20", "confidence": "determinate" } ], "quote": "In Medan, Yoginī Ekādaśī 1998 falls on Saturday 20 June. Ekādaśī runs from 23:48 on Fri 19 Jun to 21:06 on Sat 20 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-06-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-06-21", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-06-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 998, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-06-21T18:20:03+07:00", "utc": "1998-06-21T11:20:03Z", "ms": 898428003339.8876 }, "end": { "local": "1998-06-22T15:36:31+07:00", "utc": "1998-06-22T08:36:31Z", "ms": 898504590754.1385 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-06-21T18:20:03+07:00", "utc": "1998-06-21T11:20:03Z", "ms": 898428003339.8876 }, "end": { "local": "1998-06-22T15:36:31+07:00", "utc": "1998-06-22T08:36:31Z", "ms": 898504590754.1385 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-06-21", "window": { "start": { "local": "1998-06-21T18:36:41+07:00", "utc": "1998-06-21T11:36:41Z", "ms": 898429001136.4185 }, "end": { "local": "1998-06-21T20:10:08+07:00", "utc": "1998-06-21T13:10:08Z", "ms": 898434607819.0371 } }, "covered_min": 93, "window_min": 93, "qualifies": true }, { "local_date": "1998-06-22", "window": { "start": { "local": "1998-06-22T18:36:54+07:00", "utc": "1998-06-22T11:36:54Z", "ms": 898515414205.1077 }, "end": { "local": "1998-06-22T20:10:21+07:00", "utc": "1998-06-22T13:10:21Z", "ms": 898521020908.3102 } }, "covered_min": 0, "window_min": 93, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:20 on Sun 21 Jun to 15:37 on Mon 22 Jun.", "fact": "1998-06-21T11:20:03Z → 1998-06-22T08:36:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:37–20:10 on the 21st, 18:37–20:10 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 93 of 93 minutes on the 21st and 0 of 93 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 998 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Medan, 1998: Sunday 21 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": "1998-06-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-06-21", "confidence": "determinate" } ], "quote": "In Medan, Kṛṣṇa Pradoṣa Vrata 1998 falls on Sunday 21 June. Trayodaśī runs from 18:20 on Sun 21 Jun to 15:37 on Mon 22 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-06-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/shivaratri?on=1998-06-22", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-06-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30409, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-06-22T15:36:31+07:00", "utc": "1998-06-22T08:36:31Z", "ms": 898504590754.1385 }, "end": { "local": "1998-06-23T13:03:42+07:00", "utc": "1998-06-23T06:03:42Z", "ms": 898581822435.3057 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-06-22T15:36:31+07:00", "utc": "1998-06-22T08:36:31Z", "ms": 898504590754.1385 }, "end": { "local": "1998-06-23T13:03:42+07:00", "utc": "1998-06-23T06:03:42Z", "ms": 898581822435.3057 } }, "kaala": "nishita", "days": [ { "local_date": "1998-06-22", "window": { "start": { "local": "1998-06-23T00:03:19+07:00", "utc": "1998-06-22T17:03:19Z", "ms": 898534999342.1173 }, "end": { "local": "1998-06-23T00:51:19+07:00", "utc": "1998-06-22T17:51:19Z", "ms": 898537879342.1173 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-06-23", "window": { "start": { "local": "1998-06-24T00:03:32+07:00", "utc": "1998-06-23T17:03:32Z", "ms": 898621412436.8994 }, "end": { "local": "1998-06-24T00:51:32+07:00", "utc": "1998-06-23T17:51:32Z", "ms": 898624292436.8994 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 15:37 on Mon 22 Jun to 13:04 on Tue 23 Jun.", "fact": "1998-06-22T08:36:31Z → 1998-06-23T06:03:42Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:03–00:51 on the 22nd, 00:04–00:52 on the 23rd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30409 s" }, { "step": "ruling", "text": "Śivarātri, Medan, 1998: Monday 22 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": "1998-06-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-06-22", "confidence": "determinate" } ], "quote": "In Medan, Śivarātri 1998 falls on Monday 22 June. Caturdaśī runs from 15:37 on Mon 22 Jun to 13:04 on Tue 23 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/shivaratri?on=1998-06-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-06-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10743, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1998-06-25T09:04:49+07:00", "utc": "1998-06-25T02:04:49Z", "ms": 898740289092.3187 }, "end": { "local": "1998-06-26T07:55:02+07:00", "utc": "1998-06-26T00:55:02Z", "ms": 898822502059.5181 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-06-25T09:04:49+07:00", "utc": "1998-06-25T02:04:49Z", "ms": 898740289092.3187 }, "end": { "local": "1998-06-26T07:55:02+07:00", "utc": "1998-06-26T00:55:02Z", "ms": 898822502059.5181 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-06-25", "window": { "start": { "local": "1998-06-25T12:03:52+07:00", "utc": "1998-06-25T05:03:52Z", "ms": 898751031676.1707 }, "end": { "local": "1998-06-25T12:51:52+07:00", "utc": "1998-06-25T05:51:52Z", "ms": 898753911676.1707 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-06-26", "window": { "start": { "local": "1998-06-26T12:04:04+07:00", "utc": "1998-06-26T05:04:04Z", "ms": 898837444450.0645 }, "end": { "local": "1998-06-26T12:52:04+07:00", "utc": "1998-06-26T05:52:04Z", "ms": 898840324450.0645 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 09:05 on Thu 25 Jun to 07:55 on Fri 26 Jun.", "fact": "1998-06-25T02:04:49Z → 1998-06-26T00:55:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 25th, 12:04–12:52 on the 26th.", "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 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10743 s" }, { "step": "ruling", "text": "Rathayātrā, Medan, 1998: Thursday 25 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": "1998-06-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-06-25", "confidence": "determinate" } ], "quote": "In Medan, Rathayātrā 1998 falls on Thursday 25 June. Dvitīyā runs from 09:05 on Thu 25 Jun to 07:55 on Fri 26 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/vinayaka-chaturthi?on=1998-06-27", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-06-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15659, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-06-27T07:26:53+07:00", "utc": "1998-06-27T00:26:53Z", "ms": 898907213461.2906 }, "end": { "local": "1998-06-28T07:43:31+07:00", "utc": "1998-06-28T00:43:31Z", "ms": 898994610508.5426 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-06-27T07:26:53+07:00", "utc": "1998-06-27T00:26:53Z", "ms": 898907213461.2906 }, "end": { "local": "1998-06-28T07:43:31+07:00", "utc": "1998-06-28T00:43:31Z", "ms": 898994610508.5426 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-06-27", "window": { "start": { "local": "1998-06-27T12:04:17+07:00", "utc": "1998-06-27T05:04:17Z", "ms": 898923857073.2853 }, "end": { "local": "1998-06-27T12:52:17+07:00", "utc": "1998-06-27T05:52:17Z", "ms": 898926737073.2853 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-06-28", "window": { "start": { "local": "1998-06-28T12:04:30+07:00", "utc": "1998-06-28T05:04:30Z", "ms": 899010269519.3447 }, "end": { "local": "1998-06-28T12:52:30+07:00", "utc": "1998-06-28T05:52:30Z", "ms": 899013149519.3447 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:27 on Sat 27 Jun to 07:44 on Sun 28 Jun.", "fact": "1998-06-27T00:26:53Z → 1998-06-28T00:43:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 27th, 12:04–12:52 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15659 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Medan, 1998: Saturday 27 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": "1998-06-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-06-27", "confidence": "determinate" } ], "quote": "In Medan, Vināyaka Caturthī 1998 falls on Saturday 27 June. Caturthī runs from 07:27 on Sat 27 Jun to 07:44 on Sun 28 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/vinayaka-chaturthi?on=1998-06-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-06-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12033, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1998-06-28T07:43:31+07:00", "utc": "1998-06-28T00:43:31Z", "ms": 898994610508.5426 }, "end": { "local": "1998-06-29T08:44:09+07:00", "utc": "1998-06-29T01:44:09Z", "ms": 899084648550.8962 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-06-28T07:43:31+07:00", "utc": "1998-06-28T00:43:31Z", "ms": 898994610508.5426 }, "end": { "local": "1998-06-29T08:44:09+07:00", "utc": "1998-06-29T01:44:09Z", "ms": 899084648550.8962 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-06-28", "window": { "start": { "local": "1998-06-28T12:04:30+07:00", "utc": "1998-06-28T05:04:30Z", "ms": 899010269519.3447 }, "end": { "local": "1998-06-28T12:52:30+07:00", "utc": "1998-06-28T05:52:30Z", "ms": 899013149519.3447 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-06-29", "window": { "start": { "local": "1998-06-29T12:04:42+07:00", "utc": "1998-06-29T05:04:42Z", "ms": 899096681762.9331 }, "end": { "local": "1998-06-29T12:52:42+07:00", "utc": "1998-06-29T05:52:42Z", "ms": 899099561762.9331 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 07:44 on Sun 28 Jun to 08:44 on Mon 29 Jun.", "fact": "1998-06-28T00:43:31Z → 1998-06-29T01:44:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 28th, 12:05–12:53 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 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 12033 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Medan, 1998: Sunday 28 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": "1998-06-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-06-28", "confidence": "determinate" } ], "quote": "In Medan, Skanda Pañcamī 1998 falls on Sunday 28 June. Pañcamī runs from 07:44 on Sun 28 Jun to 08:44 on Mon 29 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-06-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1279, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1998-06-30T10:23:30+07:00", "utc": "1998-06-30T03:23:30Z", "ms": 899177009911.6683 }, "end": { "local": "1998-07-01T12:31:46+07:00", "utc": "1998-07-01T05:31:46Z", "ms": 899271106434.5746 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-06-30T10:23:30+07:00", "utc": "1998-06-30T03:23:30Z", "ms": 899177009911.6683 }, "end": { "local": "1998-07-01T12:31:46+07:00", "utc": "1998-07-01T05:31:46Z", "ms": 899271106434.5746 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-06-30", "window": { "start": { "local": "1998-06-30T12:04:54+07:00", "utc": "1998-06-30T05:04:54Z", "ms": 899183093779.8896 }, "end": { "local": "1998-06-30T12:52:54+07:00", "utc": "1998-06-30T05:52:54Z", "ms": 899185973779.8896 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-07-01", "window": { "start": { "local": "1998-07-01T12:05:06+07:00", "utc": "1998-07-01T05:05:06Z", "ms": 899269505547.0295 }, "end": { "local": "1998-07-01T12:53:06+07:00", "utc": "1998-07-01T05:53:06Z", "ms": 899272385547.0295 } }, "covered_min": 27, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Saptamī runs from 10:23 on Tue 30 Jun to 12:32 on Wed 1 Jul.", "fact": "1998-06-30T03:23:30Z → 1998-07-01T05:31:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:05–12:53 on the 30th, 12:05–12:53 on the 1st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 30th and 27 of 48 on the 1st.", "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 1279 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Medan, 1998: Tuesday 30 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": "1998-06-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-06-30", "confidence": "determinate" } ], "quote": "In Medan, Vivasvat Saptamī 1998 falls on Tuesday 30 June. Saptamī runs from 10:23 on Tue 30 Jun to 12:32 on Wed 1 Jul and covers all of madhyāhna that midday. It also reaches the next midday for 27 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-07-05", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32449, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-07-04T19:32:13+07:00", "utc": "1998-07-04T12:32:13Z", "ms": 899555533066.187 }, "end": { "local": "1998-07-05T21:19:44+07:00", "utc": "1998-07-05T14:19:44Z", "ms": 899648384417.1957 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-07-04T19:32:13+07:00", "utc": "1998-07-04T12:32:13Z", "ms": 899555533066.187 }, "end": { "local": "1998-07-05T21:19:44+07:00", "utc": "1998-07-05T14:19:44Z", "ms": 899648384417.1957 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-07-05", "window": { "start": { "local": "1998-07-05T06:20:21+07:00", "utc": "1998-07-04T23:20:21Z", "ms": 899594421163.1096 }, "end": { "local": "1998-07-05T06:20:21+07:00", "utc": "1998-07-04T23:20:21Z", "ms": 899594421163.1096 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-07-06", "window": { "start": { "local": "1998-07-06T06:20:33+07:00", "utc": "1998-07-05T23:20:33Z", "ms": 899680833302.1501 }, "end": { "local": "1998-07-06T06:20:33+07:00", "utc": "1998-07-05T23:20:33Z", "ms": 899680833302.1501 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:32 on Sat 4 Jul to 21:20 on Sun 5 Jul.", "fact": "1998-07-04T12:32:13Z → 1998-07-05T14:19:44Z" }, { "step": "kaala", "text": "Sunrise is at 06:20 on the 5th and 06:21 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32449 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Medan, 1998: Sunday 5 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": "1998-07-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-05", "confidence": "determinate" } ], "quote": "In Medan, Hariśayanī Ekādaśī 1998 falls on Sunday 5 July. Ekādaśī runs from 19:32 on Sat 4 Jul to 21:20 on Sun 5 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-07-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-07-07", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8576, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-07-06T22:35:53+07:00", "utc": "1998-07-06T15:35:53Z", "ms": 899739353127.7487 }, "end": { "local": "1998-07-07T23:17:32+07:00", "utc": "1998-07-07T16:17:32Z", "ms": 899828251548.3394 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-07-06T22:35:53+07:00", "utc": "1998-07-06T15:35:53Z", "ms": 899739353127.7487 }, "end": { "local": "1998-07-07T23:17:32+07:00", "utc": "1998-07-07T16:17:32Z", "ms": 899828251548.3394 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-07-06", "window": { "start": { "local": "1998-07-06T18:39:26+07:00", "utc": "1998-07-06T11:39:26Z", "ms": 899725166493.6248 }, "end": { "local": "1998-07-06T20:12:57+07:00", "utc": "1998-07-06T13:12:57Z", "ms": 899730776987.9143 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1998-07-07", "window": { "start": { "local": "1998-07-07T18:39:34+07:00", "utc": "1998-07-07T11:39:34Z", "ms": 899811574275.1714 }, "end": { "local": "1998-07-07T20:13:05+07:00", "utc": "1998-07-07T13:13:05Z", "ms": 899817185284.0082 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:36 on Mon 6 Jul to 23:18 on Tue 7 Jul.", "fact": "1998-07-06T15:35:53Z → 1998-07-07T16:17:32Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:39–20:13 on the 6th, 18:40–20:13 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 94 minutes on the 6th and 94 of 94 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8576 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Medan, 1998: Tuesday 7 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": "1998-07-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-07", "confidence": "determinate" } ], "quote": "In Medan, Śukla Pradoṣa Vrata 1998 falls on Tuesday 7 July. Trayodaśī runs from 22:36 on Mon 6 Jul to 23:18 on Tue 7 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-07-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24971, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-07-08T23:24:57+07:00", "utc": "1998-07-08T16:24:57Z", "ms": 899915097174.597 }, "end": { "local": "1998-07-09T23:00:53+07:00", "utc": "1998-07-09T16:00:53Z", "ms": 900000053002.9071 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-07-08T23:24:57+07:00", "utc": "1998-07-08T16:24:57Z", "ms": 899915097174.597 }, "end": { "local": "1998-07-09T23:00:53+07:00", "utc": "1998-07-09T16:00:53Z", "ms": 900000053002.9071 } }, "kaala": "udaya-3", "days": [ { "local_date": "1998-07-09", "window": { "start": { "local": "1998-07-09T06:21:08+07:00", "utc": "1998-07-08T23:21:08Z", "ms": 899940068207.581 }, "end": { "local": "1998-07-09T08:48:52+07:00", "utc": "1998-07-09T01:48:52Z", "ms": 899948932226.5175 } }, "covered_min": 148, "window_min": 148, "qualifies": true }, { "local_date": "1998-07-10", "window": { "start": { "local": "1998-07-10T06:21:19+07:00", "utc": "1998-07-09T23:21:19Z", "ms": 900026479283.7406 }, "end": { "local": "1998-07-10T08:49:02+07:00", "utc": "1998-07-10T01:49:02Z", "ms": 900035342331.6469 } }, "covered_min": 0, "window_min": 148, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:25 on Wed 8 Jul to 23:01 on Thu 9 Jul.", "fact": "1998-07-08T16:24:57Z → 1998-07-09T16:00:53Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:21–08:49 on the 9th, 06:21–08:49 on the 10th.", "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 148 of 148 minutes on the 9th and 0 of 148 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24971 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Medan, 1998: Thursday 9 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vyasa-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "udaya-3", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-07-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-09", "confidence": "determinate" } ], "quote": "In Medan, Vyāsa Pūjā 1998 falls on Thursday 9 July. Pūrṇimā runs from 23:25 on Wed 8 Jul to 23:01 on Thu 9 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36385, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-07-08T23:24:57+07:00", "utc": "1998-07-08T16:24:57Z", "ms": 899915097174.597 }, "end": { "local": "1998-07-09T23:00:53+07:00", "utc": "1998-07-09T16:00:53Z", "ms": 900000053002.9071 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-07-08T23:24:57+07:00", "utc": "1998-07-08T16:24:57Z", "ms": 899915097174.597 }, "end": { "local": "1998-07-09T23:00:53+07:00", "utc": "1998-07-09T16:00:53Z", "ms": 900000053002.9071 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-07-08", "window": { "start": { "local": "1998-07-08T12:06:19+07:00", "utc": "1998-07-08T05:06:19Z", "ms": 899874379195.2217 }, "end": { "local": "1998-07-08T12:54:19+07:00", "utc": "1998-07-08T05:54:19Z", "ms": 899877259195.2217 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-07-09", "window": { "start": { "local": "1998-07-09T12:06:28+07:00", "utc": "1998-07-09T05:06:28Z", "ms": 899960788254.9221 }, "end": { "local": "1998-07-09T12:54:28+07:00", "utc": "1998-07-09T05:54:28Z", "ms": 899963668254.9221 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:25 on Wed 8 Jul to 23:01 on Thu 9 Jul.", "fact": "1998-07-08T16:24:57Z → 1998-07-09T16:00:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:06–12:54 on the 8th, 12:06–12:54 on the 9th.", "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 8th and 48 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 36385 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Medan, 1998: Thursday 9 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": "1998-07-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-09", "confidence": "determinate" } ], "quote": "In Medan, Guru Pūrṇimā 1998 falls on Thursday 9 July. Pūrṇimā runs from 23:25 on Wed 8 Jul to 23:01 on Thu 9 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15665, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-07-08T23:24:57+07:00", "utc": "1998-07-08T16:24:57Z", "ms": 899915097174.597 }, "end": { "local": "1998-07-09T23:00:53+07:00", "utc": "1998-07-09T16:00:53Z", "ms": 900000053002.9071 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-07-08T23:24:57+07:00", "utc": "1998-07-08T16:24:57Z", "ms": 899915097174.597 }, "end": { "local": "1998-07-09T23:00:53+07:00", "utc": "1998-07-09T16:00:53Z", "ms": 900000053002.9071 } }, "kaala": "sayahna", "days": [ { "local_date": "1998-07-08", "window": { "start": { "local": "1998-07-08T16:11:57+07:00", "utc": "1998-07-08T09:11:57Z", "ms": 899889116607.4863 }, "end": { "local": "1998-07-08T18:39:42+07:00", "utc": "1998-07-08T11:39:42Z", "ms": 899897981548.9961 } }, "covered_min": 0, "window_min": 148, "qualifies": false }, { "local_date": "1998-07-09", "window": { "start": { "local": "1998-07-09T16:12:04+07:00", "utc": "1998-07-09T09:12:04Z", "ms": 899975524283.3269 }, "end": { "local": "1998-07-09T18:39:48+07:00", "utc": "1998-07-09T11:39:48Z", "ms": 899984388302.2633 } }, "covered_min": 148, "window_min": 148, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:25 on Wed 8 Jul to 23:01 on Thu 9 Jul.", "fact": "1998-07-08T16:24:57Z → 1998-07-09T16:00:53Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:12–18:40 on the 8th, 16:12–18:40 on the 9th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 0 of 148 minutes on the 8th and 148 of 148 on the 9th.", "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 15665 s" }, { "step": "ruling", "text": "Kokilā Vrata, Medan, 1998: Thursday 9 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": "1998-07-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-09", "confidence": "determinate" } ], "quote": "In Medan, Kokilā Vrata 1998 falls on Thursday 9 July. Pūrṇimā runs from 23:25 on Wed 8 Jul to 23:01 on Thu 9 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10053, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-07-08T23:24:57+07:00", "utc": "1998-07-08T16:24:57Z", "ms": 899915097174.597 }, "end": { "local": "1998-07-09T23:00:53+07:00", "utc": "1998-07-09T16:00:53Z", "ms": 900000053002.9071 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1998-07-08T23:24:57+07:00", "utc": "1998-07-08T16:24:57Z", "ms": 899915097174.597 }, "end": { "local": "1998-07-09T23:00:53+07:00", "utc": "1998-07-09T16:00:53Z", "ms": 900000053002.9071 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-07-08", "window": { "start": { "local": "1998-07-08T18:39:42+07:00", "utc": "1998-07-08T11:39:42Z", "ms": 899897981548.9961 }, "end": { "local": "1998-07-08T20:13:13+07:00", "utc": "1998-07-08T13:13:13Z", "ms": 899903593103.4741 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1998-07-09", "window": { "start": { "local": "1998-07-09T18:39:48+07:00", "utc": "1998-07-09T11:39:48Z", "ms": 899984388302.2633 }, "end": { "local": "1998-07-09T20:13:20+07:00", "utc": "1998-07-09T13:13:20Z", "ms": 899990000433.127 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:25 on Wed 8 Jul to 23:01 on Thu 9 Jul.", "fact": "1998-07-08T16:24:57Z → 1998-07-09T16:00:53Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:40–20:13 on the 8th, 18:40–20:13 on the 9th.", "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 94 minutes on the 8th and 94 of 94 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10053 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Medan, 1998: Thursday 9 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": "1998-07-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-09", "confidence": "determinate" } ], "quote": "In Medan, Śiva Śayanotsava 1998 falls on Thursday 9 July. Pūrṇimā runs from 23:25 on Wed 8 Jul to 23:01 on Thu 9 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2552, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1998-07-10T22:09:26+07:00", "utc": "1998-07-10T15:09:26Z", "ms": 900083365620.8406 }, "end": { "local": "1998-07-11T20:55:13+07:00", "utc": "1998-07-11T13:55:13Z", "ms": 900165312581.7507 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1998-07-10T22:09:26+07:00", "utc": "1998-07-10T15:09:26Z", "ms": 900083365620.8406 }, "end": { "local": "1998-07-11T20:55:13+07:00", "utc": "1998-07-11T13:55:13Z", "ms": 900165312581.7507 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-07-10", "window": { "start": { "local": "1998-07-10T19:19:12+07:00", "utc": "1998-07-10T12:19:12Z", "ms": 900073152141.3876 }, "end": { "local": "1998-07-10T19:19:12+07:00", "utc": "1998-07-10T12:19:12Z", "ms": 900073152141.3876 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-07-11", "window": { "start": { "local": "1998-07-11T20:12:41+07:00", "utc": "1998-07-11T13:12:41Z", "ms": 900162760863.3572 }, "end": { "local": "1998-07-11T20:12:41+07:00", "utc": "1998-07-11T13:12:41Z", "ms": 900162760863.3572 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 22:09 on Fri 10 Jul to 20:55 on Sat 11 Jul.", "fact": "1998-07-10T15:09:26Z → 1998-07-11T13:55:13Z" }, { "step": "kaala", "text": "Moonrise is at 19:19 on the 10th and 20:13 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 10th and is on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2552 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Medan, 1998: Saturday 11 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": "1998-07-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-11", "confidence": "determinate" } ], "quote": "In Medan, Aśūnya Śayana Vrata (Āṣāḍha) 1998 falls on Saturday 11 July. Dvitīyā runs from 22:09 on Fri 10 Jul to 20:55 on Sat 11 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/sankashta-chaturthi?on=1998-07-12", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6150, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-07-12T19:22:44+07:00", "utc": "1998-07-12T12:22:44Z", "ms": 900246163985.6633 }, "end": { "local": "1998-07-13T17:35:59+07:00", "utc": "1998-07-13T10:35:59Z", "ms": 900326159302.1669 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1998-07-12T19:22:44+07:00", "utc": "1998-07-12T12:22:44Z", "ms": 900246163985.6633 }, "end": { "local": "1998-07-13T17:35:59+07:00", "utc": "1998-07-13T10:35:59Z", "ms": 900326159302.1669 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-07-12", "window": { "start": { "local": "1998-07-12T21:05:14+07:00", "utc": "1998-07-12T14:05:14Z", "ms": 900252313738.8383 }, "end": { "local": "1998-07-12T21:05:14+07:00", "utc": "1998-07-12T14:05:14Z", "ms": 900252313738.8383 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-07-13", "window": { "start": { "local": "1998-07-13T21:56:40+07:00", "utc": "1998-07-13T14:56:40Z", "ms": 900341799827.574 }, "end": { "local": "1998-07-13T21:56:40+07:00", "utc": "1998-07-13T14:56:40Z", "ms": 900341799827.574 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:23 on Sun 12 Jul to 17:36 on Mon 13 Jul.", "fact": "1998-07-12T12:22:44Z → 1998-07-13T10:35:59Z" }, { "step": "kaala", "text": "Moonrise is at 21:05 on the 12th and 21:57 on the 13th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 12th and is not on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6150 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Medan, 1998: Sunday 12 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": "1998-07-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-12", "confidence": "determinate" } ], "quote": "In Medan, Saṅkaṣṭa Caturthī 1998 falls on Sunday 12 July. Caturthī runs from 19:23 on Sun 12 Jul to 17:36 on Mon 13 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/sankashta-chaturthi?on=1998-07-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ekadashi?on=1998-07-19", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6417, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-07-19T04:35:47+07:00", "utc": "1998-07-18T21:35:47Z", "ms": 900797746883.3086 }, "end": { "local": "1998-07-20T02:28:20+07:00", "utc": "1998-07-19T19:28:20Z", "ms": 900876499640.0547 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1998-07-19T04:35:47+07:00", "utc": "1998-07-18T21:35:47Z", "ms": 900797746883.3086 }, "end": { "local": "1998-07-20T02:28:20+07:00", "utc": "1998-07-19T19:28:20Z", "ms": 900876499640.0547 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-07-19", "window": { "start": { "local": "1998-07-19T06:22:44+07:00", "utc": "1998-07-18T23:22:44Z", "ms": 900804163698.6208 }, "end": { "local": "1998-07-19T06:22:44+07:00", "utc": "1998-07-18T23:22:44Z", "ms": 900804163698.6208 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-07-20", "window": { "start": { "local": "1998-07-20T06:22:51+07:00", "utc": "1998-07-19T23:22:51Z", "ms": 900890571138.8542 }, "end": { "local": "1998-07-20T06:22:51+07:00", "utc": "1998-07-19T23:22:51Z", "ms": 900890571138.8542 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:36 on Sun 19 Jul to 02:28 on Mon 20 Jul.", "fact": "1998-07-18T21:35:47Z → 1998-07-19T19:28:20Z" }, { "step": "kaala", "text": "Sunrise is at 06:23 on the 19th and 06:23 on the 20th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 19th and is not on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6417 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Medan, 1998: Sunday 19 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": "1998-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-19", "confidence": "determinate" } ], "quote": "In Medan, Kāmikā Ekādaśī 1998 falls on Sunday 19 July. Ekādaśī runs from 04:36 on Sun 19 Jul to 02:28 on Mon 20 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-07-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-07-21", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9464, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-07-21T00:31:53+07:00", "utc": "1998-07-20T17:31:53Z", "ms": 900955913101.7059 }, "end": { "local": "1998-07-21T22:51:50+07:00", "utc": "1998-07-21T15:51:50Z", "ms": 901036310307.6506 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1998-07-21T00:31:53+07:00", "utc": "1998-07-20T17:31:53Z", "ms": 900955913101.7059 }, "end": { "local": "1998-07-21T22:51:50+07:00", "utc": "1998-07-21T15:51:50Z", "ms": 901036310307.6506 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-07-20", "window": { "start": { "local": "1998-07-20T18:40:25+07:00", "utc": "1998-07-20T11:40:25Z", "ms": 900934825319.9008 }, "end": { "local": "1998-07-20T20:14:06+07:00", "utc": "1998-07-20T13:14:06Z", "ms": 900940445695.7612 } }, "covered_min": 0, "window_min": 94, "qualifies": false }, { "local_date": "1998-07-21", "window": { "start": { "local": "1998-07-21T18:40:25+07:00", "utc": "1998-07-21T11:40:25Z", "ms": 901021225046.3944 }, "end": { "local": "1998-07-21T20:14:06+07:00", "utc": "1998-07-21T13:14:06Z", "ms": 901026846331.3237 } }, "covered_min": 94, "window_min": 94, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:32 on Tue 21 Jul to 22:52 on Tue 21 Jul.", "fact": "1998-07-20T17:31:53Z → 1998-07-21T15:51:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:40–20:14 on the 20th, 18:40–20:14 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 94 minutes on the 20th and 94 of 94 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9464 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Medan, 1998: Tuesday 21 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": "1998-07-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-21", "confidence": "determinate" } ], "quote": "In Medan, Kṛṣṇa Pradoṣa Vrata 1998 falls on Tuesday 21 July. Trayodaśī runs from 00:32 on Tue 21 Jul to 22:52 on Tue 21 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-07-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/shivaratri?on=1998-07-21", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4555, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-07-21T22:51:50+07:00", "utc": "1998-07-21T15:51:50Z", "ms": 901036310307.6506 }, "end": { "local": "1998-07-22T21:33:56+07:00", "utc": "1998-07-22T14:33:56Z", "ms": 901118035605.3933 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1998-07-21T22:51:50+07:00", "utc": "1998-07-21T15:51:50Z", "ms": 901036310307.6506 }, "end": { "local": "1998-07-22T21:33:56+07:00", "utc": "1998-07-22T14:33:56Z", "ms": 901118035605.3933 } }, "kaala": "nishita", "days": [ { "local_date": "1998-07-21", "window": { "start": { "local": "1998-07-22T00:07:45+07:00", "utc": "1998-07-21T17:07:45Z", "ms": 901040864864.8795 }, "end": { "local": "1998-07-22T00:55:45+07:00", "utc": "1998-07-21T17:55:45Z", "ms": 901043744864.8795 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-07-22", "window": { "start": { "local": "1998-07-23T00:07:47+07:00", "utc": "1998-07-22T17:07:47Z", "ms": 901127267439.5024 }, "end": { "local": "1998-07-23T00:55:47+07:00", "utc": "1998-07-22T17:55:47Z", "ms": 901130147439.5024 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:52 on Tue 21 Jul to 21:34 on Wed 22 Jul.", "fact": "1998-07-21T15:51:50Z → 1998-07-22T14:33:56Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:08–00:56 on the 21st, 00:08–00:56 on the 22nd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4555 s" }, { "step": "ruling", "text": "Śivarātri, Medan, 1998: Tuesday 21 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": "1998-07-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-21", "confidence": "determinate" } ], "quote": "In Medan, Śivarātri 1998 falls on Tuesday 21 July. Caturdaśī runs from 22:52 on Tue 21 Jul to 21:34 on Wed 22 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/shivaratri?on=1998-07-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28146, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1998-07-25T20:44:56+07:00", "utc": "1998-07-25T13:44:56Z", "ms": 901374295590.2223 }, "end": { "local": "1998-07-26T21:40:37+07:00", "utc": "1998-07-26T14:40:37Z", "ms": 901464037179.2224 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1998-07-25T20:44:56+07:00", "utc": "1998-07-25T13:44:56Z", "ms": 901374295590.2223 }, "end": { "local": "1998-07-26T21:40:37+07:00", "utc": "1998-07-26T14:40:37Z", "ms": 901464037179.2224 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-07-25", "window": { "start": { "local": "1998-07-25T12:07:49+07:00", "utc": "1998-07-25T05:07:49Z", "ms": 901343269389.7043 }, "end": { "local": "1998-07-25T12:55:49+07:00", "utc": "1998-07-25T05:55:49Z", "ms": 901346149389.7043 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-07-26", "window": { "start": { "local": "1998-07-26T12:07:50+07:00", "utc": "1998-07-26T05:07:50Z", "ms": 901429669869.0698 }, "end": { "local": "1998-07-26T12:55:50+07:00", "utc": "1998-07-26T05:55:50Z", "ms": 901432549869.0698 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 20:45 on Sat 25 Jul to 21:41 on Sun 26 Jul.", "fact": "1998-07-25T13:44:56Z → 1998-07-26T14:40:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 25th, 12:08–12:56 on the 26th.", "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 25th and 48 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28146 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Medan, 1998: Sunday 26 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "madhusrava-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Madhusrava (Gujerat) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-07-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-26", "confidence": "determinate" } ], "quote": "In Medan, Madhusravā Tṛtīyā (Hariyali Teej) 1998 falls on Sunday 26 July. Tṛtīyā runs from 20:45 on Sat 25 Jul to 21:41 on Sun 26 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/vinayaka-chaturthi?on=1998-07-27", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31487, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-07-26T21:40:37+07:00", "utc": "1998-07-26T14:40:37Z", "ms": 901464037179.2224 }, "end": { "local": "1998-07-27T23:11:11+07:00", "utc": "1998-07-27T16:11:11Z", "ms": 901555871460.0541 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1998-07-26T21:40:37+07:00", "utc": "1998-07-26T14:40:37Z", "ms": 901464037179.2224 }, "end": { "local": "1998-07-27T23:11:11+07:00", "utc": "1998-07-27T16:11:11Z", "ms": 901555871460.0541 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-07-26", "window": { "start": { "local": "1998-07-26T12:07:50+07:00", "utc": "1998-07-26T05:07:50Z", "ms": 901429669869.0698 }, "end": { "local": "1998-07-26T12:55:50+07:00", "utc": "1998-07-26T05:55:50Z", "ms": 901432549869.0698 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-07-27", "window": { "start": { "local": "1998-07-27T12:07:50+07:00", "utc": "1998-07-27T05:07:50Z", "ms": 901516069742.4036 }, "end": { "local": "1998-07-27T12:55:50+07:00", "utc": "1998-07-27T05:55:50Z", "ms": 901518949742.4036 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:41 on Sun 26 Jul to 23:11 on Mon 27 Jul.", "fact": "1998-07-26T14:40:37Z → 1998-07-27T16:11:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 26th, 12:08–12:56 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 26th and 48 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31487 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Medan, 1998: Monday 27 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": "1998-07-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-27", "confidence": "determinate" } ], "quote": "In Medan, Vināyaka Caturthī 1998 falls on Monday 27 July. Caturthī runs from 21:41 on Sun 26 Jul to 23:11 on Mon 27 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/vinayaka-chaturthi?on=1998-07-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-07-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36922, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1998-07-27T23:11:11+07:00", "utc": "1998-07-27T16:11:11Z", "ms": 901555871460.0541 }, "end": { "local": "1998-07-29T01:10:40+07:00", "utc": "1998-07-28T18:10:40Z", "ms": 901649439552.504 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1998-07-27T23:11:11+07:00", "utc": "1998-07-27T16:11:11Z", "ms": 901555871460.0541 }, "end": { "local": "1998-07-29T01:10:40+07:00", "utc": "1998-07-28T18:10:40Z", "ms": 901649439552.504 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-07-27", "window": { "start": { "local": "1998-07-27T12:07:50+07:00", "utc": "1998-07-27T05:07:50Z", "ms": 901516069742.4036 }, "end": { "local": "1998-07-27T12:55:50+07:00", "utc": "1998-07-27T05:55:50Z", "ms": 901518949742.4036 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-07-28", "window": { "start": { "local": "1998-07-28T12:07:49+07:00", "utc": "1998-07-28T05:07:49Z", "ms": 901602469003.1797 }, "end": { "local": "1998-07-28T12:55:49+07:00", "utc": "1998-07-28T05:55:49Z", "ms": 901605349003.1797 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 23:11 on Mon 27 Jul to 01:11 on Wed 29 Jul.", "fact": "1998-07-27T16:11:11Z → 1998-07-28T18:10:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 27th, 12:08–12:56 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 27th and 48 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 36922 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Medan, 1998: Tuesday 28 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-07-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-07-28", "confidence": "determinate" } ], "quote": "In Medan, Nāga Pañcamī 1998 falls on Tuesday 28 July. Pañcamī runs from 23:11 on Mon 27 Jul to 01:11 on Wed 29 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-08-04", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18726, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-08-03T11:35:50+07:00", "utc": "1998-08-03T04:35:50Z", "ms": 902118949771.5315 }, "end": { "local": "1998-08-04T12:24:06+07:00", "utc": "1998-08-04T05:24:06Z", "ms": 902208246161.2026 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1998-08-03T11:35:50+07:00", "utc": "1998-08-03T04:35:50Z", "ms": 902118949771.5315 }, "end": { "local": "1998-08-04T12:24:06+07:00", "utc": "1998-08-04T05:24:06Z", "ms": 902208246161.2026 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-08-03", "window": { "start": { "local": "1998-08-03T06:23:43+07:00", "utc": "1998-08-02T23:23:43Z", "ms": 902100223343.6782 }, "end": { "local": "1998-08-03T06:23:43+07:00", "utc": "1998-08-02T23:23:43Z", "ms": 902100223343.6782 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-08-04", "window": { "start": { "local": "1998-08-04T06:23:43+07:00", "utc": "1998-08-03T23:23:43Z", "ms": 902186623029.072 }, "end": { "local": "1998-08-04T06:23:43+07:00", "utc": "1998-08-03T23:23:43Z", "ms": 902186623029.072 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:36 on Mon 3 Aug to 12:24 on Tue 4 Aug.", "fact": "1998-08-03T04:35:50Z → 1998-08-04T05:24:06Z" }, { "step": "kaala", "text": "Sunrise is at 06:24 on the 3rd and 06:24 on the 4th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 3rd and is on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18726 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Medan, 1998: Tuesday 4 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": "1998-08-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-04", "confidence": "determinate" } ], "quote": "In Medan, Putradā Ekādaśī 1998 falls on Tuesday 4 August. Ekādaśī runs from 11:36 on Mon 3 Aug to 12:24 on Tue 4 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-08-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1000, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1998-08-04T12:24:06+07:00", "utc": "1998-08-04T05:24:06Z", "ms": 902208246161.2026 }, "end": { "local": "1998-08-05T12:31:36+07:00", "utc": "1998-08-05T05:31:36Z", "ms": 902295095703.7246 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1998-08-04T12:24:06+07:00", "utc": "1998-08-04T05:24:06Z", "ms": 902208246161.2026 }, "end": { "local": "1998-08-05T12:31:36+07:00", "utc": "1998-08-05T05:31:36Z", "ms": 902295095703.7246 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-08-04", "window": { "start": { "local": "1998-08-04T12:07:26+07:00", "utc": "1998-08-04T05:07:26Z", "ms": 902207246420.1309 }, "end": { "local": "1998-08-04T12:55:26+07:00", "utc": "1998-08-04T05:55:26Z", "ms": 902210126420.1309 } }, "covered_min": 31, "window_min": 48, "qualifies": true }, { "local_date": "1998-08-05", "window": { "start": { "local": "1998-08-05T12:07:21+07:00", "utc": "1998-08-05T05:07:21Z", "ms": 902293640709.7238 }, "end": { "local": "1998-08-05T12:55:21+07:00", "utc": "1998-08-05T05:55:21Z", "ms": 902296520709.7238 } }, "covered_min": 24, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 12:24 on Tue 4 Aug to 12:32 on Wed 5 Aug.", "fact": "1998-08-04T05:24:06Z → 1998-08-05T05:31:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 4th, 12:07–12:55 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 31 of 48 minutes on the 4th and 24 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 1000 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Medan, 1998: Tuesday 4 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": "1998-08-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-04", "confidence": "determinate" } ], "quote": "In Medan, Dāmodara Dvādaśī 1998 falls on Tuesday 4 August. Dvādaśī runs from 12:24 on Tue 4 Aug to 12:32 on Wed 5 Aug and covers 31 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 24 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/pradosha-vrata?on=1998-08-05", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22044, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-08-05T12:31:36+07:00", "utc": "1998-08-05T05:31:36Z", "ms": 902295095703.7246 }, "end": { "local": "1998-08-06T11:59:03+07:00", "utc": "1998-08-06T04:59:03Z", "ms": 902379542513.5416 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1998-08-05T12:31:36+07:00", "utc": "1998-08-05T05:31:36Z", "ms": 902295095703.7246 }, "end": { "local": "1998-08-06T11:59:03+07:00", "utc": "1998-08-06T04:59:03Z", "ms": 902379542513.5416 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-08-05", "window": { "start": { "local": "1998-08-05T18:38:59+07:00", "utc": "1998-08-05T11:38:59Z", "ms": 902317139258.272 }, "end": { "local": "1998-08-05T20:12:57+07:00", "utc": "1998-08-05T13:12:57Z", "ms": 902322776789.5879 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1998-08-06", "window": { "start": { "local": "1998-08-06T18:38:48+07:00", "utc": "1998-08-06T11:38:48Z", "ms": 902403528034.5931 }, "end": { "local": "1998-08-06T20:12:47+07:00", "utc": "1998-08-06T13:12:47Z", "ms": 902409166800.6008 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:32 on Wed 5 Aug to 11:59 on Thu 6 Aug.", "fact": "1998-08-05T05:31:36Z → 1998-08-06T04:59:03Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:39–20:13 on the 5th, 18:39–20:13 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 5th and 0 of 94 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22044 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Medan, 1998: Wednesday 5 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": "1998-08-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-05", "confidence": "determinate" } ], "quote": "In Medan, Śukla Pradoṣa Vrata 1998 falls on Wednesday 5 August. Trayodaśī runs from 12:32 on Wed 5 Aug to 11:59 on Thu 6 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-08-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-07", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 9961, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-08-07T10:49:56+07:00", "utc": "1998-08-07T03:49:56Z", "ms": 902461796199.5092 }, "end": { "local": "1998-08-08T09:09:37+07:00", "utc": "1998-08-08T02:09:37Z", "ms": 902542177431.7793 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "1998-08-07T22:03:18+07:00", "utc": "1998-08-07T15:03:18Z", "ms": 902502197887.5859 }, "end": { "local": "1998-08-08T09:09:37+07:00", "utc": "1998-08-08T02:09:37Z", "ms": 902542177431.7793 } }, "kaala": "day", "days": [ { "local_date": "1998-08-07", "window": { "start": { "local": "1998-08-07T06:23:39+07:00", "utc": "1998-08-06T23:23:39Z", "ms": 902445818779.6504 }, "end": { "local": "1998-08-08T06:23:36+07:00", "utc": "1998-08-07T23:23:36Z", "ms": 902532216276.6365 } }, "covered_min": 500, "window_min": 1440, "qualifies": true }, { "local_date": "1998-08-08", "window": { "start": { "local": "1998-08-08T06:23:36+07:00", "utc": "1998-08-07T23:23:36Z", "ms": 902532216276.6365 }, "end": { "local": "1998-08-09T06:23:33+07:00", "utc": "1998-08-08T23:23:33Z", "ms": 902618613241.5303 } }, "covered_min": 166, "window_min": 1440, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:50 on Fri 7 Aug to 09:10 on Sat 8 Aug. Its second half begins at 22:03 on Fri 7 Aug.", "fact": "1998-08-07T03:49:56Z → 1998-08-08T02:09:37Z · second half from 1998-08-07T15:03:18Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:24 on the 7th, and from 06:24 on the 8th.", "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 500 of 1440 minutes on the 7th and 166 of 1440 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both days qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 9961 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Medan, 1998: Friday 7 August.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "raksha-bandhana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "day", "priority": "unstated", "when_absent": "unstated", "half": "second" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-07", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-07", "confidence": "boundary" } ], "quote": "In Medan, Rakṣā Bandhana (Rakhi) 1998 falls on Friday 7 August. The second half of Pūrṇimā runs from 22:03 on Fri 7 Aug to 09:10 on Sat 8 Aug and falls on two days: 500 minutes of it on the 7th, 166 on the 8th; the rule does not say which to take, and the day that holds more of it is ruled: treat the date as contested.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4631, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-08-07T10:49:56+07:00", "utc": "1998-08-07T03:49:56Z", "ms": 902461796199.5092 }, "end": { "local": "1998-08-08T09:09:37+07:00", "utc": "1998-08-08T02:09:37Z", "ms": 902542177431.7793 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1998-08-07T10:49:56+07:00", "utc": "1998-08-07T03:49:56Z", "ms": 902461796199.5092 }, "end": { "local": "1998-08-08T09:09:37+07:00", "utc": "1998-08-08T02:09:37Z", "ms": 902542177431.7793 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-08-07", "window": { "start": { "local": "1998-08-07T12:07:07+07:00", "utc": "1998-08-07T05:07:07Z", "ms": 902466427464.6182 }, "end": { "local": "1998-08-07T12:55:07+07:00", "utc": "1998-08-07T05:55:07Z", "ms": 902469307464.6182 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-08-08", "window": { "start": { "local": "1998-08-08T12:07:00+07:00", "utc": "1998-08-08T05:07:00Z", "ms": 902552819945.3008 }, "end": { "local": "1998-08-08T12:55:00+07:00", "utc": "1998-08-08T05:55:00Z", "ms": 902555699945.3008 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:50 on Fri 7 Aug to 09:10 on Sat 8 Aug.", "fact": "1998-08-07T03:49:56Z → 1998-08-08T02:09:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 7th, 12:07–12:55 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4631 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Medan, 1998: Friday 7 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": "1998-08-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-07", "confidence": "determinate" } ], "quote": "In Medan, Ṛṣi Tarpaṇa 1998 falls on Friday 7 August. Pūrṇimā runs from 10:50 on Fri 7 Aug to 09:10 on Sat 8 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31913, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1998-08-09T07:04:29+07:00", "utc": "1998-08-09T00:04:29Z", "ms": 902621069374.4061 }, "end": { "local": "1998-08-10T04:41:20+07:00", "utc": "1998-08-09T21:41:20Z", "ms": 902698879512.7487 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-09T07:04:29+07:00", "utc": "1998-08-09T00:04:29Z", "ms": 902621069374.4061 }, "end": { "local": "1998-08-10T04:41:20+07:00", "utc": "1998-08-09T21:41:20Z", "ms": 902698879512.7487 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-08-08", "window": { "start": { "local": "1998-08-08T18:56:09+07:00", "utc": "1998-08-08T11:56:09Z", "ms": 902577368760.3317 }, "end": { "local": "1998-08-08T18:56:09+07:00", "utc": "1998-08-08T11:56:09Z", "ms": 902577368760.3317 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-08-09", "window": { "start": { "local": "1998-08-09T19:49:27+07:00", "utc": "1998-08-09T12:49:27Z", "ms": 902666966626.3253 }, "end": { "local": "1998-08-09T19:49:27+07:00", "utc": "1998-08-09T12:49:27Z", "ms": 902666966626.3253 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 07:04 on Sun 9 Aug to 04:41 on Mon 10 Aug.", "fact": "1998-08-09T00:04:29Z → 1998-08-09T21:41:20Z" }, { "step": "kaala", "text": "Moonrise is at 18:56 on the 8th and 19:49 on the 9th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā 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. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31913 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Medan, 1998: Sunday 9 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": "1998-08-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-09", "confidence": "determinate" } ], "quote": "In Medan, Aśūnya Śayana Vrata 1998 falls on Sunday 9 August. Dvitīyā runs from 07:04 on Sun 9 Aug to 04:41 on Mon 10 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26724, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1998-08-10T04:41:20+07:00", "utc": "1998-08-09T21:41:20Z", "ms": 902698879512.7487 }, "end": { "local": "1998-08-11T02:06:52+07:00", "utc": "1998-08-10T19:06:52Z", "ms": 902776012055.4017 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-10T04:41:20+07:00", "utc": "1998-08-09T21:41:20Z", "ms": 902698879512.7487 }, "end": { "local": "1998-08-11T02:06:52+07:00", "utc": "1998-08-10T19:06:52Z", "ms": 902776012055.4017 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-08-10", "window": { "start": { "local": "1998-08-10T12:06:43+07:00", "utc": "1998-08-10T05:06:43Z", "ms": 902725603160.8417 }, "end": { "local": "1998-08-10T12:54:43+07:00", "utc": "1998-08-10T05:54:43Z", "ms": 902728483160.8417 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-08-11", "window": { "start": { "local": "1998-08-11T12:06:34+07:00", "utc": "1998-08-11T05:06:34Z", "ms": 902811993917.3241 }, "end": { "local": "1998-08-11T12:54:34+07:00", "utc": "1998-08-11T05:54:34Z", "ms": 902814873917.3241 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 04:41 on Mon 10 Aug to 02:07 on Tue 11 Aug.", "fact": "1998-08-09T21:41:20Z → 1998-08-10T19:06:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 10th, 12:07–12:55 on the 11th.", "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 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26724 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Medan, 1998: Monday 10 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kajjali-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 3 Kajjali trtiya, (paraviddha), Angaveta trtiya (Orissa)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-10", "confidence": "determinate" } ], "quote": "In Medan, Kajjalī Tṛtīyā (Kajari Teej) 1998 falls on Monday 10 August. Tṛtīyā runs from 04:41 on Mon 10 Aug to 02:07 on Tue 11 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17387, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-08-11T02:06:52+07:00", "utc": "1998-08-10T19:06:52Z", "ms": 902776012055.4017 }, "end": { "local": "1998-08-11T23:27:29+07:00", "utc": "1998-08-11T16:27:29Z", "ms": 902852849177.3243 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-11T02:06:52+07:00", "utc": "1998-08-10T19:06:52Z", "ms": 902776012055.4017 }, "end": { "local": "1998-08-11T23:27:29+07:00", "utc": "1998-08-11T16:27:29Z", "ms": 902852849177.3243 } }, "kaala": "sayahna", "days": [ { "local_date": "1998-08-10", "window": { "start": { "local": "1998-08-10T16:11:03+07:00", "utc": "1998-08-10T09:11:03Z", "ms": 902740263247.6844 }, "end": { "local": "1998-08-10T18:37:57+07:00", "utc": "1998-08-10T11:37:57Z", "ms": 902749076638.913 } }, "covered_min": 0, "window_min": 147, "qualifies": false }, { "local_date": "1998-08-11", "window": { "start": { "local": "1998-08-11T16:10:51+07:00", "utc": "1998-08-11T09:10:51Z", "ms": 902826650902.0104 }, "end": { "local": "1998-08-11T18:37:42+07:00", "utc": "1998-08-11T11:37:42Z", "ms": 902835462225.1345 } }, "covered_min": 147, "window_min": 147, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:07 on Tue 11 Aug to 23:27 on Tue 11 Aug.", "fact": "1998-08-10T19:06:52Z → 1998-08-11T16:27:29Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:11–18:38 on the 10th, 16:11–18:38 on the 11th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 0 of 147 minutes on the 10th and 147 of 147 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 17387 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Medan, 1998: Tuesday 11 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bahula-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 4 Bahula caturthi (Madhyadesa) (Sayahnavyapini: if occurs on two successive days, it is to be observed on the 1st day)." } ], "kaala": "sayahna", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-11", "confidence": "determinate" } ], "quote": "In Medan, Bahulā Caturthī 1998 falls on Tuesday 11 August. Caturthī runs from 02:07 on Tue 11 Aug to 23:27 on Tue 11 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/sankashta-chaturthi?on=1998-08-11", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6843, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-08-11T02:06:52+07:00", "utc": "1998-08-10T19:06:52Z", "ms": 902776012055.4017 }, "end": { "local": "1998-08-11T23:27:29+07:00", "utc": "1998-08-11T16:27:29Z", "ms": 902852849177.3243 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-11T02:06:52+07:00", "utc": "1998-08-10T19:06:52Z", "ms": 902776012055.4017 }, "end": { "local": "1998-08-11T23:27:29+07:00", "utc": "1998-08-11T16:27:29Z", "ms": 902852849177.3243 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-08-10", "window": { "start": { "local": "1998-08-10T20:41:47+07:00", "utc": "1998-08-10T13:41:47Z", "ms": 902756507387.0612 }, "end": { "local": "1998-08-10T20:41:47+07:00", "utc": "1998-08-10T13:41:47Z", "ms": 902756507387.0612 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-08-11", "window": { "start": { "local": "1998-08-11T21:33:26+07:00", "utc": "1998-08-11T14:33:26Z", "ms": 902846005721.9111 }, "end": { "local": "1998-08-11T21:33:26+07:00", "utc": "1998-08-11T14:33:26Z", "ms": 902846005721.9111 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:07 on Tue 11 Aug to 23:27 on Tue 11 Aug.", "fact": "1998-08-10T19:06:52Z → 1998-08-11T16:27:29Z" }, { "step": "kaala", "text": "Moonrise is at 20:42 on the 10th and 21:33 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 10th and is on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6843 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Medan, 1998: Tuesday 11 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": "1998-08-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-11", "confidence": "determinate" } ], "quote": "In Medan, Saṅkaṣṭa Caturthī 1998 falls on Tuesday 11 August. Caturthī runs from 02:07 on Tue 11 Aug to 23:27 on Tue 11 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/sankashta-chaturthi?on=1998-08-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19336, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1998-08-12T20:48:59+07:00", "utc": "1998-08-12T13:48:59Z", "ms": 902929739081.4445 }, "end": { "local": "1998-08-13T18:16:29+07:00", "utc": "1998-08-13T11:16:29Z", "ms": 903006989345.1746 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-12T20:48:59+07:00", "utc": "1998-08-12T13:48:59Z", "ms": 902929739081.4445 }, "end": { "local": "1998-08-13T18:16:29+07:00", "utc": "1998-08-13T11:16:29Z", "ms": 903006989345.1746 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-08-12", "window": { "start": { "local": "1998-08-12T12:06:24+07:00", "utc": "1998-08-12T05:06:24Z", "ms": 902898384121.2544 }, "end": { "local": "1998-08-12T12:54:24+07:00", "utc": "1998-08-12T05:54:24Z", "ms": 902901264121.2544 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-08-13", "window": { "start": { "local": "1998-08-13T12:06:14+07:00", "utc": "1998-08-13T05:06:14Z", "ms": 902984773783.6968 }, "end": { "local": "1998-08-13T12:54:14+07:00", "utc": "1998-08-13T05:54:14Z", "ms": 902987653783.6968 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 20:49 on Wed 12 Aug to 18:16 on Thu 13 Aug.", "fact": "1998-08-12T13:48:59Z → 1998-08-13T11:16:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:06–12:54 on the 12th, 12:06–12:54 on the 13th.", "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 12th and 48 of 48 on the 13th.", "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 19336 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Medan, 1998: Thursday 13 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "hala-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Hala sasthi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-13", "confidence": "determinate" } ], "quote": "In Medan, Hala Ṣaṣṭhī 1998 falls on Thursday 13 August. Ṣaṣṭhī runs from 20:49 on Wed 12 Aug to 18:16 on Thu 13 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29495, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1998-08-14T15:54:25+07:00", "utc": "1998-08-14T08:54:25Z", "ms": 903084864669.2206 }, "end": { "local": "1998-08-15T13:46:29+07:00", "utc": "1998-08-15T06:46:29Z", "ms": 903163588564.4476 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-14T15:54:25+07:00", "utc": "1998-08-14T08:54:25Z", "ms": 903084864669.2206 }, "end": { "local": "1998-08-15T13:46:29+07:00", "utc": "1998-08-15T06:46:29Z", "ms": 903163588564.4476 } }, "kaala": "nishita", "days": [ { "local_date": "1998-08-14", "window": { "start": { "local": "1998-08-15T00:06:00+07:00", "utc": "1998-08-14T17:06:00Z", "ms": 903114359895.5311 }, "end": { "local": "1998-08-15T00:54:00+07:00", "utc": "1998-08-14T17:54:00Z", "ms": 903117239895.5311 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-08-15", "window": { "start": { "local": "1998-08-16T00:05:48+07:00", "utc": "1998-08-15T17:05:48Z", "ms": 903200748270.5166 }, "end": { "local": "1998-08-16T00:53:48+07:00", "utc": "1998-08-15T17:53:48Z", "ms": 903203628270.5166 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 15:54 on Fri 14 Aug to 13:46 on Sat 15 Aug.", "fact": "1998-08-14T08:54:25Z → 1998-08-15T06:46:29Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:06–00:54 on the 14th, 00:06–00:54 on the 15th.", "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 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 night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29495 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Medan, 1998: Friday 14 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "janmashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami." } ], "not_evaluated": "The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.", "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-14", "confidence": "determinate" } ], "quote": "In Medan, Janmāṣṭamī 1998 falls on Friday 14 August. Aṣṭamī runs from 15:54 on Fri 14 Aug to 13:46 on Sat 15 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10822, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "1998-08-13T18:16:29+07:00", "utc": "1998-08-13T11:16:29Z", "ms": 903006989345.1746 }, "end": { "local": "1998-08-14T15:54:25+07:00", "utc": "1998-08-14T08:54:25Z", "ms": 903084864669.2206 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-13T18:16:29+07:00", "utc": "1998-08-13T11:16:29Z", "ms": 903006989345.1746 }, "end": { "local": "1998-08-14T15:54:25+07:00", "utc": "1998-08-14T08:54:25Z", "ms": 903084864669.2206 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-08-13", "window": { "start": { "local": "1998-08-13T12:06:14+07:00", "utc": "1998-08-13T05:06:14Z", "ms": 902984773783.6968 }, "end": { "local": "1998-08-13T12:54:14+07:00", "utc": "1998-08-13T05:54:14Z", "ms": 902987653783.6968 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-08-14", "window": { "start": { "local": "1998-08-14T12:06:03+07:00", "utc": "1998-08-14T05:06:03Z", "ms": 903071162915.2153 }, "end": { "local": "1998-08-14T12:54:03+07:00", "utc": "1998-08-14T05:54:03Z", "ms": 903074042915.2153 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 18:16 on Thu 13 Aug to 15:54 on Fri 14 Aug.", "fact": "1998-08-13T11:16:29Z → 1998-08-14T08:54:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:06–12:54 on the 13th, 12:06–12:54 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 10822 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Medan, 1998: Friday 14 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitala-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 7 Sitala saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-14", "confidence": "determinate" } ], "quote": "In Medan, Śītalā Saptamī 1998 falls on Friday 14 August. Saptamī runs from 18:16 on Thu 13 Aug to 15:54 on Fri 14 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-08-18", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10429, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-08-17T10:25:03+07:00", "utc": "1998-08-17T03:25:03Z", "ms": 903324303475.7808 }, "end": { "local": "1998-08-18T09:16:32+07:00", "utc": "1998-08-18T02:16:32Z", "ms": 903406592488.6454 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-17T10:25:03+07:00", "utc": "1998-08-17T03:25:03Z", "ms": 903324303475.7808 }, "end": { "local": "1998-08-18T09:16:32+07:00", "utc": "1998-08-18T02:16:32Z", "ms": 903406592488.6454 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-08-17", "window": { "start": { "local": "1998-08-17T06:22:51+07:00", "utc": "1998-08-16T23:22:51Z", "ms": 903309770872.1615 }, "end": { "local": "1998-08-17T06:22:51+07:00", "utc": "1998-08-16T23:22:51Z", "ms": 903309770872.1615 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-08-18", "window": { "start": { "local": "1998-08-18T06:22:43+07:00", "utc": "1998-08-17T23:22:43Z", "ms": 903396163439.9991 }, "end": { "local": "1998-08-18T06:22:43+07:00", "utc": "1998-08-17T23:22:43Z", "ms": 903396163439.9991 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:25 on Mon 17 Aug to 09:17 on Tue 18 Aug.", "fact": "1998-08-17T03:25:03Z → 1998-08-18T02:16:32Z" }, { "step": "kaala", "text": "Sunrise is at 06:23 on the 17th and 06:23 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 17th and is on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10429 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Medan, 1998: Tuesday 18 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": "1998-08-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-18", "confidence": "determinate" } ], "quote": "In Medan, Ajā Ekādaśī 1998 falls on Tuesday 18 August. Ekādaśī runs from 10:25 on Mon 17 Aug to 09:17 on Tue 18 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-08-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-08-19", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36185, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-08-19T08:32:21+07:00", "utc": "1998-08-19T01:32:21Z", "ms": 903490341066.1388 }, "end": { "local": "1998-08-20T08:14:23+07:00", "utc": "1998-08-20T01:14:23Z", "ms": 903575663305.8121 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-19T08:32:21+07:00", "utc": "1998-08-19T01:32:21Z", "ms": 903490341066.1388 }, "end": { "local": "1998-08-20T08:14:23+07:00", "utc": "1998-08-20T01:14:23Z", "ms": 903575663305.8121 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-08-19", "window": { "start": { "local": "1998-08-19T18:35:26+07:00", "utc": "1998-08-19T11:35:26Z", "ms": 903526526310.786 }, "end": { "local": "1998-08-19T20:09:42+07:00", "utc": "1998-08-19T13:09:42Z", "ms": 903532182432.9932 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1998-08-20", "window": { "start": { "local": "1998-08-20T18:35:07+07:00", "utc": "1998-08-20T11:35:07Z", "ms": 903612906907.901 }, "end": { "local": "1998-08-20T20:09:24+07:00", "utc": "1998-08-20T13:09:24Z", "ms": 903618564448.0908 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:32 on Wed 19 Aug to 08:14 on Thu 20 Aug.", "fact": "1998-08-19T01:32:21Z → 1998-08-20T01:14:23Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:35–20:10 on the 19th, 18:35–20:09 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 19th and 0 of 94 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36185 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Medan, 1998: Wednesday 19 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": "1998-08-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-19", "confidence": "determinate" } ], "quote": "In Medan, Kṛṣṇa Pradoṣa Vrata 1998 falls on Wednesday 19 August. Trayodaśī runs from 08:32 on Wed 19 Aug to 08:14 on Thu 20 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-08-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36631, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-08-20T08:14:23+07:00", "utc": "1998-08-20T01:14:23Z", "ms": 903575663305.8121 }, "end": { "local": "1998-08-21T08:24:16+07:00", "utc": "1998-08-21T01:24:16Z", "ms": 903662656415.5594 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-20T08:14:23+07:00", "utc": "1998-08-20T01:14:23Z", "ms": 903575663305.8121 }, "end": { "local": "1998-08-21T08:24:16+07:00", "utc": "1998-08-21T01:24:16Z", "ms": 903662656415.5594 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-08-20", "window": { "start": { "local": "1998-08-20T18:35:07+07:00", "utc": "1998-08-20T11:35:07Z", "ms": 903612906907.901 }, "end": { "local": "1998-08-20T20:09:24+07:00", "utc": "1998-08-20T13:09:24Z", "ms": 903618564448.0908 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1998-08-21", "window": { "start": { "local": "1998-08-21T18:34:47+07:00", "utc": "1998-08-21T11:34:47Z", "ms": 903699287001.8105 }, "end": { "local": "1998-08-21T20:09:06+07:00", "utc": "1998-08-21T13:09:06Z", "ms": 903704945969.4438 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:14 on Thu 20 Aug to 08:24 on Fri 21 Aug.", "fact": "1998-08-20T01:14:23Z → 1998-08-21T01:24:16Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:35–20:09 on the 20th, 18:35–20:09 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 20th and 0 of 94 on the 21st.", "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 36631 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Medan, 1998: Thursday 20 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aghora-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Aghora caturdasi (pradosa vyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-20", "confidence": "determinate" } ], "quote": "In Medan, Aghora Caturdaśī 1998 falls on Thursday 20 August. Caturdaśī runs from 08:14 on Thu 20 Aug to 08:24 on Fri 21 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/shivaratri?on=1998-08-20", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26487, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-08-20T08:14:23+07:00", "utc": "1998-08-20T01:14:23Z", "ms": 903575663305.8121 }, "end": { "local": "1998-08-21T08:24:16+07:00", "utc": "1998-08-21T01:24:16Z", "ms": 903662656415.5594 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-20T08:14:23+07:00", "utc": "1998-08-20T01:14:23Z", "ms": 903575663305.8121 }, "end": { "local": "1998-08-21T08:24:16+07:00", "utc": "1998-08-21T01:24:16Z", "ms": 903662656415.5594 } }, "kaala": "nishita", "days": [ { "local_date": "1998-08-19", "window": { "start": { "local": "1998-08-20T00:04:57+07:00", "utc": "1998-08-19T17:04:57Z", "ms": 903546296769.0627 }, "end": { "local": "1998-08-20T00:52:57+07:00", "utc": "1998-08-19T17:52:57Z", "ms": 903549176769.0627 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-08-20", "window": { "start": { "local": "1998-08-21T00:04:43+07:00", "utc": "1998-08-20T17:04:43Z", "ms": 903632682683.613 }, "end": { "local": "1998-08-21T00:52:43+07:00", "utc": "1998-08-20T17:52:43Z", "ms": 903635562683.613 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:14 on Thu 20 Aug to 08:24 on Fri 21 Aug.", "fact": "1998-08-20T01:14:23Z → 1998-08-21T01:24:16Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:05–00:53 on the 19th, 00:05–00:53 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 0 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26487 s" }, { "step": "ruling", "text": "Śivarātri, Medan, 1998: Thursday 20 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": "1998-08-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-20", "confidence": "determinate" } ], "quote": "In Medan, Śivarātri 1998 falls on Thursday 20 August. Caturdaśī runs from 08:14 on Thu 20 Aug to 08:24 on Fri 21 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/shivaratri?on=1998-08-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6783, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1998-08-22T09:03:06+07:00", "utc": "1998-08-22T02:03:06Z", "ms": 903751385747.2126 }, "end": { "local": "1998-08-23T10:11:00+07:00", "utc": "1998-08-23T03:11:00Z", "ms": 903841859698.3074 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-22T09:03:06+07:00", "utc": "1998-08-22T02:03:06Z", "ms": 903751385747.2126 }, "end": { "local": "1998-08-23T10:11:00+07:00", "utc": "1998-08-23T03:11:00Z", "ms": 903841859698.3074 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-08-22", "window": { "start": { "local": "1998-08-22T12:04:18+07:00", "utc": "1998-08-22T05:04:18Z", "ms": 903762257930.9548 }, "end": { "local": "1998-08-22T12:52:18+07:00", "utc": "1998-08-22T05:52:18Z", "ms": 903765137930.9548 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-08-23", "window": { "start": { "local": "1998-08-23T12:04:03+07:00", "utc": "1998-08-23T05:04:03Z", "ms": 903848642677.9319 }, "end": { "local": "1998-08-23T12:52:03+07:00", "utc": "1998-08-23T05:52:03Z", "ms": 903851522677.9319 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 09:03 on Sat 22 Aug to 10:11 on Sun 23 Aug.", "fact": "1998-08-22T02:03:06Z → 1998-08-23T03:11:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 22nd, 12:04–12:52 on the 23rd.", "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 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 6783 s" }, { "step": "ruling", "text": "Rudra Vrata, Medan, 1998: Saturday 22 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rudra-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Rudra vrata (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-22", "confidence": "determinate" } ], "quote": "In Medan, Rudra Vrata 1998 falls on Saturday 22 August. Pratipadā runs from 09:03 on Sat 22 Aug to 10:11 on Sun 23 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1031, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1998-08-24T11:46:36+07:00", "utc": "1998-08-24T04:46:36Z", "ms": 903933996324.4452 }, "end": { "local": "1998-08-25T13:46:27+07:00", "utc": "1998-08-25T06:46:27Z", "ms": 904027587205.8511 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-24T11:46:36+07:00", "utc": "1998-08-24T04:46:36Z", "ms": 903933996324.4452 }, "end": { "local": "1998-08-25T13:46:27+07:00", "utc": "1998-08-25T06:46:27Z", "ms": 904027587205.8511 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-08-24", "window": { "start": { "local": "1998-08-24T12:03:47+07:00", "utc": "1998-08-24T05:03:47Z", "ms": 903935026981.3818 }, "end": { "local": "1998-08-24T12:51:47+07:00", "utc": "1998-08-24T05:51:47Z", "ms": 903937906981.3818 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-08-25", "window": { "start": { "local": "1998-08-25T12:03:31+07:00", "utc": "1998-08-25T05:03:31Z", "ms": 904021410851.9988 }, "end": { "local": "1998-08-25T12:51:31+07:00", "utc": "1998-08-25T05:51:31Z", "ms": 904024290851.9988 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 11:47 on Mon 24 Aug to 13:46 on Tue 25 Aug.", "fact": "1998-08-24T04:46:36Z → 1998-08-25T06:46:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 24th, 12:04–12:52 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 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. 103" }, { "step": "tie_break", "text": "Both middays qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 1031 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Medan, 1998: Tuesday 25 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "haritalika-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Haritalika vrata (paraviddha), Gauri vrata (Orissa), Gauri (Mysore)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-25", "confidence": "determinate" } ], "quote": "In Medan, Haritālikā Vrata (Hartalika Teej) 1998 falls on Tuesday 25 August. Tṛtīyā runs from 11:47 on Mon 24 Aug to 13:46 on Tue 25 Aug 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/medan/festivals/1998/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": "/medan/festivals/1998/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3296, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-08-25T13:46:27+07:00", "utc": "1998-08-25T06:46:27Z", "ms": 904027587205.8511 }, "end": { "local": "1998-08-26T16:04:29+07:00", "utc": "1998-08-26T09:04:29Z", "ms": 904122268689.9591 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-25T13:46:27+07:00", "utc": "1998-08-25T06:46:27Z", "ms": 904027587205.8511 }, "end": { "local": "1998-08-26T16:04:29+07:00", "utc": "1998-08-26T09:04:29Z", "ms": 904122268689.9591 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-08-25", "window": { "start": { "local": "1998-08-25T12:03:31+07:00", "utc": "1998-08-25T05:03:31Z", "ms": 904021410851.9988 }, "end": { "local": "1998-08-25T12:51:31+07:00", "utc": "1998-08-25T05:51:31Z", "ms": 904024290851.9988 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-08-26", "window": { "start": { "local": "1998-08-26T12:03:14+07:00", "utc": "1998-08-26T05:03:14Z", "ms": 904107794301.3198 }, "end": { "local": "1998-08-26T12:51:14+07:00", "utc": "1998-08-26T05:51:14Z", "ms": 904110674301.3198 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:46 on Tue 25 Aug to 16:04 on Wed 26 Aug.", "fact": "1998-08-25T06:46:27Z → 1998-08-26T09:04:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 25th, 12:03–12:51 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 25th and 48 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 3296 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Medan, 1998: Wednesday 26 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Varada caturthi (purvaviddha, madhyahnavyapini), Samvatsari parva (Jain-caturthi paksa), Saubhagya caturthi (Bengal), Ganesa caturthi (madhyahna vyapini and purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-26", "confidence": "determinate" } ], "quote": "In Medan, Gaṇeśa Caturthī 1998 falls on Wednesday 26 August. Caturthī runs from 13:46 on Tue 25 Aug to 16:04 on Wed 26 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11594, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1998-08-26T16:04:29+07:00", "utc": "1998-08-26T09:04:29Z", "ms": 904122268689.9591 }, "end": { "local": "1998-08-27T18:31:54+07:00", "utc": "1998-08-27T11:31:54Z", "ms": 904217514241.6619 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-26T16:04:29+07:00", "utc": "1998-08-26T09:04:29Z", "ms": 904122268689.9591 }, "end": { "local": "1998-08-27T18:31:54+07:00", "utc": "1998-08-27T11:31:54Z", "ms": 904217514241.6619 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-08-26", "window": { "start": { "local": "1998-08-26T12:03:14+07:00", "utc": "1998-08-26T05:03:14Z", "ms": 904107794301.3198 }, "end": { "local": "1998-08-26T12:51:14+07:00", "utc": "1998-08-26T05:51:14Z", "ms": 904110674301.3198 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-08-27", "window": { "start": { "local": "1998-08-27T12:02:57+07:00", "utc": "1998-08-27T05:02:57Z", "ms": 904194177341.7255 }, "end": { "local": "1998-08-27T12:50:57+07:00", "utc": "1998-08-27T05:50:57Z", "ms": 904197057341.7255 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 16:04 on Wed 26 Aug to 18:32 on Thu 27 Aug.", "fact": "1998-08-26T09:04:29Z → 1998-08-27T11:31:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 26th, 12:03–12:51 on the 27th.", "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 26th and 48 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: disputed → only-day · margin 11594 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Medan, 1998: Thursday 27 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Rsi pancami (madhyahnavyapini) — If occurs on two successive days, it is to be observed according to Madhava on the 1st day and according to Hemadri and Divodasa on the 2nd day" } ], "kaala": "madhyahna", "priority": "disputed", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-27", "confidence": "determinate" } ], "quote": "In Medan, Ṛṣi Pañcamī 1998 falls on Thursday 27 August. Pañcamī runs from 16:04 on Wed 26 Aug to 18:32 on Thu 27 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20457, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1998-08-27T18:31:54+07:00", "utc": "1998-08-27T11:31:54Z", "ms": 904217514241.6619 }, "end": { "local": "1998-08-28T20:57:41+07:00", "utc": "1998-08-28T13:57:41Z", "ms": 904312660775.2029 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-27T18:31:54+07:00", "utc": "1998-08-27T11:31:54Z", "ms": 904217514241.6619 }, "end": { "local": "1998-08-28T20:57:41+07:00", "utc": "1998-08-28T13:57:41Z", "ms": 904312660775.2029 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-08-27", "window": { "start": { "local": "1998-08-27T12:02:57+07:00", "utc": "1998-08-27T05:02:57Z", "ms": 904194177341.7255 }, "end": { "local": "1998-08-27T12:50:57+07:00", "utc": "1998-08-27T05:50:57Z", "ms": 904197057341.7255 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-08-28", "window": { "start": { "local": "1998-08-28T12:02:40+07:00", "utc": "1998-08-28T05:02:40Z", "ms": 904280559986.4207 }, "end": { "local": "1998-08-28T12:50:40+07:00", "utc": "1998-08-28T05:50:40Z", "ms": 904283439986.4207 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 18:32 on Thu 27 Aug to 20:58 on Fri 28 Aug.", "fact": "1998-08-27T11:31:54Z → 1998-08-28T13:57:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 27th, 12:03–12:51 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 27th and 48 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20457 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Medan, 1998: Friday 28 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi-bhadrapada", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Surya sasthi (paraviddha), Lolarka sasthi" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-28", "confidence": "determinate" } ], "quote": "In Medan, Sūrya Ṣaṣṭhī (Bhādrapada) 1998 falls on Friday 28 August. Ṣaṣṭhī runs from 18:32 on Thu 27 Aug to 20:58 on Fri 28 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29221, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1998-08-28T20:57:41+07:00", "utc": "1998-08-28T13:57:41Z", "ms": 904312660775.2029 }, "end": { "local": "1998-08-29T23:09:33+07:00", "utc": "1998-08-29T16:09:33Z", "ms": 904406973350.7223 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-28T20:57:41+07:00", "utc": "1998-08-28T13:57:41Z", "ms": 904312660775.2029 }, "end": { "local": "1998-08-29T23:09:33+07:00", "utc": "1998-08-29T16:09:33Z", "ms": 904406973350.7223 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-08-28", "window": { "start": { "local": "1998-08-28T12:02:40+07:00", "utc": "1998-08-28T05:02:40Z", "ms": 904280559986.4207 }, "end": { "local": "1998-08-28T12:50:40+07:00", "utc": "1998-08-28T05:50:40Z", "ms": 904283439986.4207 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-08-29", "window": { "start": { "local": "1998-08-29T12:02:22+07:00", "utc": "1998-08-29T05:02:22Z", "ms": 904366942249.4136 }, "end": { "local": "1998-08-29T12:50:22+07:00", "utc": "1998-08-29T05:50:22Z", "ms": 904369822249.4136 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 20:58 on Fri 28 Aug to 23:10 on Sat 29 Aug.", "fact": "1998-08-28T13:57:41Z → 1998-08-29T16:09:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 28th, 12:02–12:50 on the 29th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 29221 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Medan, 1998: Saturday 29 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "muktabharana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Muktabharana vrata (purvaviddha), Lalita saptami (Bengal & Orissa)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-29", "confidence": "determinate" } ], "quote": "In Medan, Muktābharaṇa Vrata 1998 falls on Saturday 29 August. Saptamī runs from 20:58 on Fri 28 Aug to 23:10 on Sat 29 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-08-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37151, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1998-08-29T23:09:33+07:00", "utc": "1998-08-29T16:09:33Z", "ms": 904406973350.7223 }, "end": { "local": "1998-08-31T00:55:38+07:00", "utc": "1998-08-30T17:55:38Z", "ms": 904499737713.7936 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-08-29T23:09:33+07:00", "utc": "1998-08-29T16:09:33Z", "ms": 904406973350.7223 }, "end": { "local": "1998-08-31T00:55:38+07:00", "utc": "1998-08-30T17:55:38Z", "ms": 904499737713.7936 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-08-29", "window": { "start": { "local": "1998-08-29T12:02:22+07:00", "utc": "1998-08-29T05:02:22Z", "ms": 904366942249.4136 }, "end": { "local": "1998-08-29T12:50:22+07:00", "utc": "1998-08-29T05:50:22Z", "ms": 904369822249.4136 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-08-30", "window": { "start": { "local": "1998-08-30T12:02:04+07:00", "utc": "1998-08-30T05:02:04Z", "ms": 904453324145.5046 }, "end": { "local": "1998-08-30T12:50:04+07:00", "utc": "1998-08-30T05:50:04Z", "ms": 904456204145.5046 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 23:10 on Sat 29 Aug to 00:56 on Mon 31 Aug.", "fact": "1998-08-29T16:09:33Z → 1998-08-30T17:55:38Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:02–12:50 on the 29th, 12:02–12:50 on the 30th.", "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 29th and 48 of 48 on the 30th.", "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 37151 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Medan, 1998: Sunday 30 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "radhashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Durvastami (purvaviddha — S 8 of saura Bhadra except Bengal), Mahalaksmi vratarambha, Radhastami (madhyahna vyapini)" } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-08-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-08-30", "confidence": "determinate" } ], "quote": "In Medan, Rādhāṣṭamī 1998 falls on Sunday 30 August. Aṣṭamī runs from 23:10 on Sat 29 Aug to 00:56 on Mon 31 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-09-02", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13580, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-09-02T02:33:43+07:00", "utc": "1998-09-01T19:33:43Z", "ms": 904678422593.658 }, "end": { "local": "1998-09-03T02:15:52+07:00", "utc": "1998-09-02T19:15:52Z", "ms": 904763752105.2482 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-09-02T02:33:43+07:00", "utc": "1998-09-01T19:33:43Z", "ms": 904678422593.658 }, "end": { "local": "1998-09-03T02:15:52+07:00", "utc": "1998-09-02T19:15:52Z", "ms": 904763752105.2482 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-09-02", "window": { "start": { "local": "1998-09-02T06:20:02+07:00", "utc": "1998-09-01T23:20:02Z", "ms": 904692002221.174 }, "end": { "local": "1998-09-02T06:20:02+07:00", "utc": "1998-09-01T23:20:02Z", "ms": 904692002221.174 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-09-03", "window": { "start": { "local": "1998-09-03T06:19:49+07:00", "utc": "1998-09-02T23:19:49Z", "ms": 904778388646.1959 }, "end": { "local": "1998-09-03T06:19:49+07:00", "utc": "1998-09-02T23:19:49Z", "ms": 904778388646.1959 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:34 on Wed 2 Sep to 02:16 on Thu 3 Sep.", "fact": "1998-09-01T19:33:43Z → 1998-09-02T19:15:52Z" }, { "step": "kaala", "text": "Sunrise is at 06:20 on the 2nd and 06:20 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 13580 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Medan, 1998: Wednesday 2 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": "1998-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-02", "confidence": "determinate" } ], "quote": "In Medan, Parivartanī Ekādaśī 1998 falls on Wednesday 2 September. Ekādaśī runs from 02:34 on Wed 2 Sep to 02:16 on Thu 3 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-09-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35096, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1998-09-03T02:15:52+07:00", "utc": "1998-09-02T19:15:52Z", "ms": 904763752105.2482 }, "end": { "local": "1998-09-04T01:12:59+07:00", "utc": "1998-09-03T18:12:59Z", "ms": 904846378993.0933 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-09-03T02:15:52+07:00", "utc": "1998-09-02T19:15:52Z", "ms": 904763752105.2482 }, "end": { "local": "1998-09-04T01:12:59+07:00", "utc": "1998-09-03T18:12:59Z", "ms": 904846378993.0933 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-09-03", "window": { "start": { "local": "1998-09-03T12:00:48+07:00", "utc": "1998-09-03T05:00:48Z", "ms": 904798848387.1038 }, "end": { "local": "1998-09-03T12:48:48+07:00", "utc": "1998-09-03T05:48:48Z", "ms": 904801728387.1038 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-09-04", "window": { "start": { "local": "1998-09-04T12:00:29+07:00", "utc": "1998-09-04T05:00:29Z", "ms": 904885228701.3743 }, "end": { "local": "1998-09-04T12:48:29+07:00", "utc": "1998-09-04T05:48:29Z", "ms": 904888108701.3743 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 02:16 on Thu 3 Sep to 01:13 on Fri 4 Sep.", "fact": "1998-09-02T19:15:52Z → 1998-09-03T18:12:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:01–12:49 on the 3rd, 12:00–12:48 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35096 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Medan, 1998: Thursday 3 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": "1998-09-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-03", "confidence": "determinate" } ], "quote": "In Medan, Vāmana Jayantī 1998 falls on Thursday 3 September. Dvādaśī runs from 02:16 on Thu 3 Sep to 01:13 on Fri 4 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/pradosha-vrata?on=1998-09-04", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12279, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-09-04T01:12:59+07:00", "utc": "1998-09-03T18:12:59Z", "ms": 904846378993.0933 }, "end": { "local": "1998-09-04T23:28:42+07:00", "utc": "1998-09-04T16:28:42Z", "ms": 904926521651.3947 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-09-04T01:12:59+07:00", "utc": "1998-09-03T18:12:59Z", "ms": 904846378993.0933 }, "end": { "local": "1998-09-04T23:28:42+07:00", "utc": "1998-09-04T16:28:42Z", "ms": 904926521651.3947 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-09-03", "window": { "start": { "local": "1998-09-03T18:29:48+07:00", "utc": "1998-09-03T11:29:48Z", "ms": 904822188128.0115 }, "end": { "local": "1998-09-03T20:04:26+07:00", "utc": "1998-09-03T13:04:26Z", "ms": 904827866351.0503 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "1998-09-04", "window": { "start": { "local": "1998-09-04T18:29:23+07:00", "utc": "1998-09-04T11:29:23Z", "ms": 904908562601.946 }, "end": { "local": "1998-09-04T20:04:02+07:00", "utc": "1998-09-04T13:04:02Z", "ms": 904914242348.9197 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:13 on Fri 4 Sep to 23:29 on Fri 4 Sep.", "fact": "1998-09-03T18:12:59Z → 1998-09-04T16:28:42Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:30–20:04 on the 3rd, 18:29–20:04 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 95 minutes on the 3rd and 95 of 95 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 12279 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Medan, 1998: Friday 4 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": "1998-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-04", "confidence": "determinate" } ], "quote": "In Medan, Śukla Pradoṣa Vrata 1998 falls on Friday 4 September. Trayodaśī runs from 01:13 on Fri 4 Sep to 23:29 on Fri 4 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-09-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24639, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-09-04T23:28:42+07:00", "utc": "1998-09-04T16:28:42Z", "ms": 904926521651.3947 }, "end": { "local": "1998-09-05T21:08:58+07:00", "utc": "1998-09-05T14:08:58Z", "ms": 905004538158.4009 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1998-09-04T23:28:42+07:00", "utc": "1998-09-04T16:28:42Z", "ms": 904926521651.3947 }, "end": { "local": "1998-09-05T21:08:58+07:00", "utc": "1998-09-05T14:08:58Z", "ms": 905004538158.4009 } }, "kaala": "udaya-3", "days": [ { "local_date": "1998-09-05", "window": { "start": { "local": "1998-09-05T06:19:21+07:00", "utc": "1998-09-04T23:19:21Z", "ms": 904951160704.2484 }, "end": { "local": "1998-09-05T08:45:16+07:00", "utc": "1998-09-05T01:45:16Z", "ms": 904959915925.255 } }, "covered_min": 146, "window_min": 146, "qualifies": true }, { "local_date": "1998-09-06", "window": { "start": { "local": "1998-09-06T06:19:06+07:00", "utc": "1998-09-05T23:19:06Z", "ms": 905037546377.0164 }, "end": { "local": "1998-09-06T08:44:59+07:00", "utc": "1998-09-06T01:44:59Z", "ms": 905046299256.2513 } }, "covered_min": 0, "window_min": 146, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:29 on Fri 4 Sep to 21:09 on Sat 5 Sep.", "fact": "1998-09-04T16:28:42Z → 1998-09-05T14:08:58Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:19–08:45 on the 5th, 06:19–08:45 on the 6th.", "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 146 of 146 minutes on the 5th and 0 of 146 on the 6th.", "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 24639 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Medan, 1998: Saturday 5 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": "1998-09-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-05", "confidence": "determinate" } ], "quote": "In Medan, Ananta Caturdaśī 1998 falls on Saturday 5 September. Caturdaśī runs from 23:29 on Fri 4 Sep to 21:09 on Sat 5 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/sankashta-chaturthi?on=1998-09-09", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29814, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-09-09T08:38:06+07:00", "utc": "1998-09-09T01:38:06Z", "ms": 905305086150.8016 }, "end": { "local": "1998-09-10T05:26:27+07:00", "utc": "1998-09-09T22:26:27Z", "ms": 905379986945.2509 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-09-09T08:38:06+07:00", "utc": "1998-09-09T01:38:06Z", "ms": 905305086150.8016 }, "end": { "local": "1998-09-10T05:26:27+07:00", "utc": "1998-09-09T22:26:27Z", "ms": 905379986945.2509 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-09-08", "window": { "start": { "local": "1998-09-08T20:16:09+07:00", "utc": "1998-09-08T13:16:09Z", "ms": 905260569110.9756 }, "end": { "local": "1998-09-08T20:16:09+07:00", "utc": "1998-09-08T13:16:09Z", "ms": 905260569110.9756 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-09-09", "window": { "start": { "local": "1998-09-09T21:09:33+07:00", "utc": "1998-09-09T14:09:33Z", "ms": 905350173293.605 }, "end": { "local": "1998-09-09T21:09:33+07:00", "utc": "1998-09-09T14:09:33Z", "ms": 905350173293.605 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:38 on Wed 9 Sep to 05:26 on Thu 10 Sep.", "fact": "1998-09-09T01:38:06Z → 1998-09-09T22:26:27Z" }, { "step": "kaala", "text": "Moonrise is at 20:16 on the 8th and 21:10 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 29814 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Medan, 1998: Wednesday 9 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": "1998-09-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-09", "confidence": "determinate" } ], "quote": "In Medan, Saṅkaṣṭa Caturthī 1998 falls on Wednesday 9 September. Caturthī runs from 08:38 on Wed 9 Sep to 05:26 on Thu 10 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/sankashta-chaturthi?on=1998-09-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3454, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1998-09-11T02:30:00+07:00", "utc": "1998-09-10T19:30:00Z", "ms": 905455800209.9305 }, "end": { "local": "1998-09-11T23:55:45+07:00", "utc": "1998-09-11T16:55:45Z", "ms": 905532945478.216 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-09-11T02:30:00+07:00", "utc": "1998-09-10T19:30:00Z", "ms": 905455800209.9305 }, "end": { "local": "1998-09-11T23:55:45+07:00", "utc": "1998-09-11T16:55:45Z", "ms": 905532945478.216 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-09-10", "window": { "start": { "local": "1998-09-10T22:03:31+07:00", "utc": "1998-09-10T15:03:31Z", "ms": 905439810997.9858 }, "end": { "local": "1998-09-10T22:03:31+07:00", "utc": "1998-09-10T15:03:31Z", "ms": 905439810997.9858 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-09-11", "window": { "start": { "local": "1998-09-11T22:58:11+07:00", "utc": "1998-09-11T15:58:11Z", "ms": 905529491046.556 }, "end": { "local": "1998-09-11T22:58:11+07:00", "utc": "1998-09-11T15:58:11Z", "ms": 905529491046.556 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:30 on Fri 11 Sep to 23:56 on Fri 11 Sep.", "fact": "1998-09-10T19:30:00Z → 1998-09-11T16:55:45Z" }, { "step": "kaala", "text": "Moonrise is at 22:04 on the 10th and 22:58 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is not on the 10th and is on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 3454 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Medan, 1998: Friday 11 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chandra-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Candra sasthi (Sasthi current at moon-rise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-09-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-11", "confidence": "determinate" } ], "quote": "In Medan, Candra Ṣaṣṭhī 1998 falls on Friday 11 September. Ṣaṣṭhī runs from 02:30 on Fri 11 Sep to 23:56 on Fri 11 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7442, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1998-09-12T21:49:21+07:00", "utc": "1998-09-12T14:49:21Z", "ms": 905611761456.3137 }, "end": { "local": "1998-09-13T20:14:48+07:00", "utc": "1998-09-13T13:14:48Z", "ms": 905692488433.1366 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-09-12T21:49:21+07:00", "utc": "1998-09-12T14:49:21Z", "ms": 905611761456.3137 }, "end": { "local": "1998-09-13T20:14:48+07:00", "utc": "1998-09-13T13:14:48Z", "ms": 905692488433.1366 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-09-12", "window": { "start": { "local": "1998-09-12T23:53:24+07:00", "utc": "1998-09-12T16:53:24Z", "ms": 905619203882.562 }, "end": { "local": "1998-09-12T23:53:24+07:00", "utc": "1998-09-12T16:53:24Z", "ms": 905619203882.562 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-09-13", "window": { "start": { "local": "1998-09-14T00:48:41+07:00", "utc": "1998-09-13T17:48:41Z", "ms": 905708920658.2804 }, "end": { "local": "1998-09-14T00:48:41+07:00", "utc": "1998-09-13T17:48:41Z", "ms": 905708920658.2804 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 21:49 on Sat 12 Sep to 20:15 on Sun 13 Sep.", "fact": "1998-09-12T14:49:21Z → 1998-09-13T13:14:48Z" }, { "step": "kaala", "text": "Moonrise is at 23:53 on the 12th and 00:49 on the 13th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 12th and is not on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7442 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Medan, 1998: Saturday 12 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalakshmi-vrata-samapana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-12", "confidence": "determinate" } ], "quote": "In Medan, Mahālakṣmī Vrata Samāpana 1998 falls on Saturday 12 September. Aṣṭamī runs from 21:49 on Sat 12 Sep to 20:15 on Sun 13 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 871, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1998-09-12T21:49:21+07:00", "utc": "1998-09-12T14:49:21Z", "ms": 905611761456.3137 }, "end": { "local": "1998-09-13T20:14:48+07:00", "utc": "1998-09-13T13:14:48Z", "ms": 905692488433.1366 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-09-12T21:49:21+07:00", "utc": "1998-09-12T14:49:21Z", "ms": 905611761456.3137 }, "end": { "local": "1998-09-13T20:14:48+07:00", "utc": "1998-09-13T13:14:48Z", "ms": 905692488433.1366 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-09-12", "window": { "start": { "local": "1998-09-12T18:25:51+07:00", "utc": "1998-09-12T11:25:51Z", "ms": 905599550793.9288 }, "end": { "local": "1998-09-12T20:00:43+07:00", "utc": "1998-09-12T13:00:43Z", "ms": 905605242884.5857 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "1998-09-13", "window": { "start": { "local": "1998-09-13T18:25:24+07:00", "utc": "1998-09-13T11:25:24Z", "ms": 905685923720.2529 }, "end": { "local": "1998-09-13T20:00:17+07:00", "utc": "1998-09-13T13:00:17Z", "ms": 905691617368.6403 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 21:49 on Sat 12 Sep to 20:15 on Sun 13 Sep.", "fact": "1998-09-12T14:49:21Z → 1998-09-13T13:14:48Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:26–20:01 on the 12th, 18:25–20:00 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 0 of 95 minutes on the 12th and 95 of 95 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 871 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Medan, 1998: Sunday 13 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "jitashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-13", "confidence": "determinate" } ], "quote": "In Medan, Jitāṣṭamī (Jitiya) 1998 falls on Sunday 13 September. Aṣṭamī runs from 21:49 on Sat 12 Sep to 20:15 on Sun 13 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-09-16", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40858, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-09-15T18:48:13+07:00", "utc": "1998-09-15T11:48:13Z", "ms": 905860092538.6788 }, "end": { "local": "1998-09-16T18:55:22+07:00", "utc": "1998-09-16T11:55:22Z", "ms": 905946921697.5164 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-09-15T18:48:13+07:00", "utc": "1998-09-15T11:48:13Z", "ms": 905860092538.6788 }, "end": { "local": "1998-09-16T18:55:22+07:00", "utc": "1998-09-16T11:55:22Z", "ms": 905946921697.5164 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-09-16", "window": { "start": { "local": "1998-09-16T06:16:35+07:00", "utc": "1998-09-15T23:16:35Z", "ms": 905901395186.4231 }, "end": { "local": "1998-09-16T06:16:35+07:00", "utc": "1998-09-15T23:16:35Z", "ms": 905901395186.4231 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-09-17", "window": { "start": { "local": "1998-09-17T06:16:20+07:00", "utc": "1998-09-16T23:16:20Z", "ms": 905987779713.726 }, "end": { "local": "1998-09-17T06:16:20+07:00", "utc": "1998-09-16T23:16:20Z", "ms": 905987779713.726 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:48 on Tue 15 Sep to 18:55 on Wed 16 Sep.", "fact": "1998-09-15T11:48:13Z → 1998-09-16T11:55:22Z" }, { "step": "kaala", "text": "Sunrise is at 06:17 on the 16th and 06:16 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 40858 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Medan, 1998: Wednesday 16 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": "1998-09-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-16", "confidence": "determinate" } ], "quote": "In Medan, Indirā Ekādaśī 1998 falls on Wednesday 16 September. Ekādaśī runs from 18:48 on Tue 15 Sep to 18:55 on Wed 16 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-09-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-09-18", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-18", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1510, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-09-17T19:33:25+07:00", "utc": "1998-09-17T12:33:25Z", "ms": 906035604706.5844 }, "end": { "local": "1998-09-18T20:39:20+07:00", "utc": "1998-09-18T13:39:20Z", "ms": 906125960430.0046 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-09-17T19:33:25+07:00", "utc": "1998-09-17T12:33:25Z", "ms": 906035604706.5844 }, "end": { "local": "1998-09-18T20:39:20+07:00", "utc": "1998-09-18T13:39:20Z", "ms": 906125960430.0046 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-09-17", "window": { "start": { "local": "1998-09-17T18:23:35+07:00", "utc": "1998-09-17T11:23:35Z", "ms": 906031415008.6139 }, "end": { "local": "1998-09-17T19:58:35+07:00", "utc": "1998-09-17T12:58:35Z", "ms": 906037114906.9855 } }, "covered_min": 25, "window_min": 95, "qualifies": true }, { "local_date": "1998-09-18", "window": { "start": { "local": "1998-09-18T18:23:08+07:00", "utc": "1998-09-18T11:23:08Z", "ms": 906117787819.0242 }, "end": { "local": "1998-09-18T19:58:09+07:00", "utc": "1998-09-18T12:58:09Z", "ms": 906123489283.2072 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:33 on Thu 17 Sep to 20:39 on Fri 18 Sep.", "fact": "1998-09-17T12:33:25Z → 1998-09-18T13:39:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:24–19:59 on the 17th, 18:23–19:58 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 25 of 95 minutes on the 17th and 95 of 95 on the 18th.", "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 1510 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Medan, 1998: Friday 18 September.", "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": "1998-09-18", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-18", "confidence": "boundary" } ], "quote": "In Medan, Kṛṣṇa Pradoṣa Vrata 1998 falls on Friday 18 September. Trayodaśī runs from 19:33 on Thu 17 Sep to 20:39 on Fri 18 Sep and covers all of pradoṣa that evening. It also reaches the previous evening for 25 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/medan/festivals/1998/pradosha-vrata?on=1998-09-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/shivaratri?on=1998-09-18", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6316, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-09-18T20:39:20+07:00", "utc": "1998-09-18T13:39:20Z", "ms": 906125960430.0046 }, "end": { "local": "1998-09-19T22:09:51+07:00", "utc": "1998-09-19T15:09:51Z", "ms": 906217790534.9814 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-09-18T20:39:20+07:00", "utc": "1998-09-18T13:39:20Z", "ms": 906125960430.0046 }, "end": { "local": "1998-09-19T22:09:51+07:00", "utc": "1998-09-19T15:09:51Z", "ms": 906217790534.9814 } }, "kaala": "nishita", "days": [ { "local_date": "1998-09-18", "window": { "start": { "local": "1998-09-18T23:55:28+07:00", "utc": "1998-09-18T16:55:28Z", "ms": 906137728309.7102 }, "end": { "local": "1998-09-19T00:43:28+07:00", "utc": "1998-09-18T17:43:28Z", "ms": 906140608309.7102 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-09-19", "window": { "start": { "local": "1998-09-19T23:55:07+07:00", "utc": "1998-09-19T16:55:07Z", "ms": 906224107026.1755 }, "end": { "local": "1998-09-20T00:43:07+07:00", "utc": "1998-09-19T17:43:07Z", "ms": 906226987026.1755 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 20:39 on Fri 18 Sep to 22:10 on Sat 19 Sep.", "fact": "1998-09-18T13:39:20Z → 1998-09-19T15:09:51Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:55–00:43 on the 18th, 23:55–00:43 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 6316 s" }, { "step": "ruling", "text": "Śivarātri, Medan, 1998: Friday 18 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": "1998-09-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-18", "confidence": "determinate" } ], "quote": "In Medan, Śivarātri 1998 falls on Friday 18 September. Caturdaśī runs from 20:39 on Fri 18 Sep to 22:10 on Sat 19 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/shivaratri?on=1998-09-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22352, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1998-09-19T22:09:51+07:00", "utc": "1998-09-19T15:09:51Z", "ms": 906217790534.9814 }, "end": { "local": "1998-09-21T00:01:29+07:00", "utc": "1998-09-20T17:01:29Z", "ms": 906310889303.4702 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-09-19T22:09:51+07:00", "utc": "1998-09-19T15:09:51Z", "ms": 906217790534.9814 }, "end": { "local": "1998-09-21T00:01:29+07:00", "utc": "1998-09-20T17:01:29Z", "ms": 906310889303.4702 } }, "kaala": "aparahna", "days": [ { "local_date": "1998-09-19", "window": { "start": { "local": "1998-09-19T13:31:56+07:00", "utc": "1998-09-19T06:31:56Z", "ms": 906186715916.6001 }, "end": { "local": "1998-09-19T15:57:18+07:00", "utc": "1998-09-19T08:57:18Z", "ms": 906195438288.668 } }, "covered_min": 0, "window_min": 145, "qualifies": false }, { "local_date": "1998-09-20", "window": { "start": { "local": "1998-09-20T13:31:33+07:00", "utc": "1998-09-20T06:31:33Z", "ms": 906273093487.5996 }, "end": { "local": "1998-09-20T15:56:54+07:00", "utc": "1998-09-20T08:56:54Z", "ms": 906281813519.5944 } }, "covered_min": 145, "window_min": 145, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 22:10 on Sat 19 Sep to 00:01 on Mon 21 Sep.", "fact": "1998-09-19T15:09:51Z → 1998-09-20T17:01:29Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:32–15:57 on the 19th, 13:32–15:57 on the 20th.", "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 145 minutes on the 19th and 145 of 145 on the 20th.", "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 22352 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Medan, 1998: Sunday 20 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalaya-amavasya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Mahalaya amavasya (aparahnavyapini)" } ], "not_evaluated": "The note on p. 106 gives the first day in a decreasing tithimāna and the second in an increasing one, when amāvāsyā covers the whole of aparāhṇa on both days; tithimāna is not computed.", "kaala": "aparahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-20", "confidence": "determinate" } ], "quote": "In Medan, Mahālaya Amāvāsyā 1998 falls on Sunday 20 September. Amāvasyā runs from 22:10 on Sat 19 Sep to 00:01 on Mon 21 Sep and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35015, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1998-09-21T00:01:29+07:00", "utc": "1998-09-20T17:01:29Z", "ms": 906310889303.4702 }, "end": { "local": "1998-09-22T02:10:36+07:00", "utc": "1998-09-21T19:10:36Z", "ms": 906405035900.9004 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-09-21T00:01:29+07:00", "utc": "1998-09-20T17:01:29Z", "ms": 906310889303.4702 }, "end": { "local": "1998-09-22T02:10:36+07:00", "utc": "1998-09-21T19:10:36Z", "ms": 906405035900.9004 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-09-21", "window": { "start": { "local": "1998-09-21T11:54:32+07:00", "utc": "1998-09-21T04:54:32Z", "ms": 906353672272.7687 }, "end": { "local": "1998-09-21T12:42:32+07:00", "utc": "1998-09-21T05:42:32Z", "ms": 906356552272.7687 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-09-22", "window": { "start": { "local": "1998-09-22T11:54:11+07:00", "utc": "1998-09-22T04:54:11Z", "ms": 906440051151.1742 }, "end": { "local": "1998-09-22T12:42:11+07:00", "utc": "1998-09-22T05:42:11Z", "ms": 906442931151.1742 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 00:01 on Mon 21 Sep to 02:11 on Tue 22 Sep.", "fact": "1998-09-20T17:01:29Z → 1998-09-21T19:10:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 21st, 11:54–12:42 on the 22nd.", "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 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: paraviddha → only-day · margin 35015 s" }, { "step": "ruling", "text": "Navarātrārambha, Medan, 1998: Monday 21 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-09-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-21", "confidence": "determinate" } ], "quote": "In Medan, Navarātrārambha (Navratri) 1998 falls on Monday 21 September. Pratipadā runs from 00:01 on Mon 21 Sep to 02:11 on Tue 22 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/vinayaka-chaturthi?on=1998-09-24", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8389, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-09-24T07:02:47+07:00", "utc": "1998-09-24T00:02:47Z", "ms": 906595366607.3861 }, "end": { "local": "1998-09-25T09:33:19+07:00", "utc": "1998-09-25T02:33:19Z", "ms": 906690799451.4006 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-09-24T07:02:47+07:00", "utc": "1998-09-24T00:02:47Z", "ms": 906595366607.3861 }, "end": { "local": "1998-09-25T09:33:19+07:00", "utc": "1998-09-25T02:33:19Z", "ms": 906690799451.4006 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-09-24", "window": { "start": { "local": "1998-09-24T11:53:29+07:00", "utc": "1998-09-24T04:53:29Z", "ms": 906612809209.3157 }, "end": { "local": "1998-09-24T12:41:29+07:00", "utc": "1998-09-24T05:41:29Z", "ms": 906615689209.3157 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-09-25", "window": { "start": { "local": "1998-09-25T11:53:08+07:00", "utc": "1998-09-25T04:53:08Z", "ms": 906699188424.5725 }, "end": { "local": "1998-09-25T12:41:08+07:00", "utc": "1998-09-25T05:41:08Z", "ms": 906702068424.5725 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:03 on Thu 24 Sep to 09:33 on Fri 25 Sep.", "fact": "1998-09-24T00:02:47Z → 1998-09-25T02:33:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 24th, 11:53–12:41 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8389 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Medan, 1998: Thursday 24 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-09-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-24", "confidence": "determinate" } ], "quote": "In Medan, Vināyaka Caturthī 1998 falls on Thursday 24 September. Caturthī runs from 07:03 on Thu 24 Sep to 09:33 on Fri 25 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/vinayaka-chaturthi?on=1998-09-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25082, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1998-09-27T14:00:11+07:00", "utc": "1998-09-27T07:00:11Z", "ms": 906879611023.8284 }, "end": { "local": "1998-09-28T15:36:19+07:00", "utc": "1998-09-28T08:36:19Z", "ms": 906971779334.2498 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-09-27T14:00:11+07:00", "utc": "1998-09-27T07:00:11Z", "ms": 906879611023.8284 }, "end": { "local": "1998-09-28T15:36:19+07:00", "utc": "1998-09-28T08:36:19Z", "ms": 906971779334.2498 } }, "kaala": "udaya-1", "days": [ { "local_date": "1998-09-27", "window": { "start": { "local": "1998-09-27T06:13:48+07:00", "utc": "1998-09-26T23:13:48Z", "ms": 906851627939.2744 }, "end": { "local": "1998-09-27T07:02:09+07:00", "utc": "1998-09-27T00:02:09Z", "ms": 906854529189.8575 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-09-28", "window": { "start": { "local": "1998-09-28T06:13:33+07:00", "utc": "1998-09-27T23:13:33Z", "ms": 906938013421.9823 }, "end": { "local": "1998-09-28T07:01:54+07:00", "utc": "1998-09-28T00:01:54Z", "ms": 906940913903.7152 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 14:00 on Sun 27 Sep to 15:36 on Mon 28 Sep.", "fact": "1998-09-27T07:00:11Z → 1998-09-28T08:36:19Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 06:14–07:02 on the 27th, 06:14–07:02 on the 28th.", "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 48 minutes on the 27th and 48 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25082 s" }, { "step": "ruling", "text": "Durgā Saptamī, Medan, 1998: Monday 28 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Durga saptami (paraviddha) — covering one muhurta from sunrise" } ], "kaala": "udaya-1", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-28", "confidence": "determinate" } ], "quote": "In Medan, Durgā Saptamī 1998 falls on Monday 28 September. Saptamī runs from 14:00 on Sun 27 Sep to 15:36 on Mon 28 Sep and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10572, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1998-09-28T15:36:19+07:00", "utc": "1998-09-28T08:36:19Z", "ms": 906971779334.2498 }, "end": { "local": "1998-09-29T16:35:01+07:00", "utc": "1998-09-29T09:35:01Z", "ms": 907061701353.1208 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-09-28T15:36:19+07:00", "utc": "1998-09-28T08:36:19Z", "ms": 906971779334.2498 }, "end": { "local": "1998-09-29T16:35:01+07:00", "utc": "1998-09-29T09:35:01Z", "ms": 907061701353.1208 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-09-28", "window": { "start": { "local": "1998-09-28T11:52:07+07:00", "utc": "1998-09-28T04:52:07Z", "ms": 906958327034.9792 }, "end": { "local": "1998-09-28T12:40:07+07:00", "utc": "1998-09-28T05:40:07Z", "ms": 906961207034.9792 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-09-29", "window": { "start": { "local": "1998-09-29T11:51:47+07:00", "utc": "1998-09-29T04:51:47Z", "ms": 907044706956.5052 }, "end": { "local": "1998-09-29T12:39:47+07:00", "utc": "1998-09-29T05:39:47Z", "ms": 907047586956.5052 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 15:36 on Mon 28 Sep to 16:35 on Tue 29 Sep.", "fact": "1998-09-28T08:36:19Z → 1998-09-29T09:35:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 28th, 11:52–12:40 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 0 of 48 minutes on the 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10572 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Medan, 1998: Tuesday 29 September.", "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": "1998-09-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-29", "confidence": "determinate" } ], "quote": "In Medan, Mahāṣṭamī (Durga Ashtami) 1998 falls on Tuesday 29 September. Aṣṭamī runs from 15:36 on Mon 28 Sep to 16:35 on Tue 29 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-09-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14114, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1998-09-29T16:35:01+07:00", "utc": "1998-09-29T09:35:01Z", "ms": 907061701353.1208 }, "end": { "local": "1998-09-30T16:49:27+07:00", "utc": "1998-09-30T09:49:27Z", "ms": 907148966792.8064 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-09-29T16:35:01+07:00", "utc": "1998-09-29T09:35:01Z", "ms": 907061701353.1208 }, "end": { "local": "1998-09-30T16:49:27+07:00", "utc": "1998-09-30T09:49:27Z", "ms": 907148966792.8064 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-09-29", "window": { "start": { "local": "1998-09-29T11:51:47+07:00", "utc": "1998-09-29T04:51:47Z", "ms": 907044706956.5052 }, "end": { "local": "1998-09-29T12:39:47+07:00", "utc": "1998-09-29T05:39:47Z", "ms": 907047586956.5052 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-09-30", "window": { "start": { "local": "1998-09-30T11:51:27+07:00", "utc": "1998-09-30T04:51:27Z", "ms": 907131087103.0754 }, "end": { "local": "1998-09-30T12:39:27+07:00", "utc": "1998-09-30T05:39:27Z", "ms": 907133967103.0754 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 16:35 on Tue 29 Sep to 16:49 on Wed 30 Sep.", "fact": "1998-09-29T09:35:01Z → 1998-09-30T09:49:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 29th, 11:51–12:39 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 0 of 48 minutes on the 29th and 48 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 14114 s" }, { "step": "ruling", "text": "Mahānavamī, Medan, 1998: Wednesday 30 September.", "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": "1998-09-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-09-30", "confidence": "determinate" } ], "quote": "In Medan, Mahānavamī 1998 falls on Wednesday 30 September. Navamī runs from 16:35 on Tue 29 Sep to 16:49 on Wed 30 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7285, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "1998-09-30T16:49:27+07:00", "utc": "1998-09-30T09:49:27Z", "ms": 907148966792.8064 }, "end": { "local": "1998-10-01T16:15:59+07:00", "utc": "1998-10-01T09:15:59Z", "ms": 907233358899.0333 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "conjunction", "start": { "local": "1998-10-01T08:49:24+07:00", "utc": "1998-10-01T01:49:24Z", "ms": 907206564159.7087 }, "end": { "local": "1998-10-01T16:15:59+07:00", "utc": "1998-10-01T09:15:59Z", "ms": 907233358899.0333 }, "nakshatra": { "type": "nakshatra", "index": 21, "key": "shravana", "name": "Śravaṇa", "start": { "local": "1998-10-01T08:49:24+07:00", "utc": "1998-10-01T01:49:24Z", "ms": 907206564159.7087 }, "end": { "local": "1998-10-02T08:24:29+07:00", "utc": "1998-10-02T01:24:29Z", "ms": 907291469163.1571 } } }, "kaala": "daytime", "days": [ { "local_date": "1998-10-01", "window": { "start": { "local": "1998-10-01T06:12:51+07:00", "utc": "1998-09-30T23:12:51Z", "ms": 907197171086.3337 }, "end": { "local": "1998-10-01T18:17:24+07:00", "utc": "1998-10-01T11:17:24Z", "ms": 907240643904.1962 } }, "covered_min": 447, "window_min": 725, "qualifies": true }, { "local_date": "1998-10-02", "window": { "start": { "local": "1998-10-02T06:12:37+07:00", "utc": "1998-10-01T23:12:37Z", "ms": 907283557444.9857 }, "end": { "local": "1998-10-02T18:16:59+07:00", "utc": "1998-10-02T11:16:59Z", "ms": 907327018864.1119 } }, "covered_min": 0, "window_min": 724, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 16:49 on Wed 30 Sep to 16:16 on Thu 1 Oct, and Śravaṇa from 08:49 on Thu 1 Oct to 08:24 on Fri 2 Oct. They are together from 08:49 on Thu 1 Oct to 16:16 on Thu 1 Oct.", "fact": "1998-10-01T01:49:24Z → 1998-10-01T09:15:59Z" }, { "step": "kaala", "text": "The day time is sunrise to sunset: 06:13–18:17 on the 1st, 06:13–18:17 on the 2nd.", "fact": "daytime: sunrise-to-sunset · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Where Daśamī touches Śravaṇa in the day time, that day is taken. Together they cover 447 of 725 minutes on the 1st and 0 of 724 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one day qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7285 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Medan, 1998: Thursday 1 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": "1998-10-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-01", "confidence": "determinate" } ], "quote": "In Medan, Vijayā Daśamī (Dussehra) 1998 falls on Thursday 1 October. Daśamī runs from 16:49 on Wed 30 Sep to 16:16 on Thu 1 Oct and is with Śravaṇa in the day time that day, for 447 minutes.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-10-02", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31316, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-10-01T16:15:59+07:00", "utc": "1998-10-01T09:15:59Z", "ms": 907233358899.0333 }, "end": { "local": "1998-10-02T14:54:33+07:00", "utc": "1998-10-02T07:54:33Z", "ms": 907314873466.7008 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-10-01T16:15:59+07:00", "utc": "1998-10-01T09:15:59Z", "ms": 907233358899.0333 }, "end": { "local": "1998-10-02T14:54:33+07:00", "utc": "1998-10-02T07:54:33Z", "ms": 907314873466.7008 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-10-01", "window": { "start": { "local": "1998-10-01T06:12:51+07:00", "utc": "1998-09-30T23:12:51Z", "ms": 907197171086.3337 }, "end": { "local": "1998-10-01T06:12:51+07:00", "utc": "1998-09-30T23:12:51Z", "ms": 907197171086.3337 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-10-02", "window": { "start": { "local": "1998-10-02T06:12:37+07:00", "utc": "1998-10-01T23:12:37Z", "ms": 907283557444.9857 }, "end": { "local": "1998-10-02T06:12:37+07:00", "utc": "1998-10-01T23:12:37Z", "ms": 907283557444.9857 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:16 on Thu 1 Oct to 14:55 on Fri 2 Oct.", "fact": "1998-10-01T09:15:59Z → 1998-10-02T07:54:33Z" }, { "step": "kaala", "text": "Sunrise is at 06:13 on the 1st and 06:13 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 31316 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Medan, 1998: Friday 2 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": "1998-10-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-02", "confidence": "determinate" } ], "quote": "In Medan, Pāśāṅkuśā Ekādaśī 1998 falls on Friday 2 October. Ekādaśī runs from 16:16 on Thu 1 Oct to 14:55 on Fri 2 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-10-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-10-03", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19688, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-10-03T12:48:26+07:00", "utc": "1998-10-03T05:48:26Z", "ms": 907393705932.3783 }, "end": { "local": "1998-10-04T10:03:38+07:00", "utc": "1998-10-04T03:03:38Z", "ms": 907470218017.2872 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1998-10-03T12:48:26+07:00", "utc": "1998-10-03T05:48:26Z", "ms": 907393705932.3783 }, "end": { "local": "1998-10-04T10:03:38+07:00", "utc": "1998-10-04T03:03:38Z", "ms": 907470218017.2872 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-10-03", "window": { "start": { "local": "1998-10-03T18:16:34+07:00", "utc": "1998-10-03T11:16:34Z", "ms": 907413394132.5314 }, "end": { "local": "1998-10-03T19:51:59+07:00", "utc": "1998-10-03T12:51:59Z", "ms": 907419119047.1721 } }, "covered_min": 95, "window_min": 95, "qualifies": true }, { "local_date": "1998-10-04", "window": { "start": { "local": "1998-10-04T18:16:10+07:00", "utc": "1998-10-04T11:16:10Z", "ms": 907499769733.7911 }, "end": { "local": "1998-10-04T19:51:36+07:00", "utc": "1998-10-04T12:51:36Z", "ms": 907505496199.443 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:48 on Sat 3 Oct to 10:04 on Sun 4 Oct.", "fact": "1998-10-03T05:48:26Z → 1998-10-04T03:03:38Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:17–19:52 on the 3rd, 18:16–19:52 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 95 of 95 minutes on the 3rd and 0 of 95 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 19688 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Medan, 1998: Saturday 3 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": "1998-10-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-03", "confidence": "determinate" } ], "quote": "In Medan, Śukla Pradoṣa Vrata 1998 falls on Saturday 3 October. Trayodaśī runs from 12:48 on Sat 3 Oct to 10:04 on Sun 4 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-10-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17068, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-10-08T16:02:29+07:00", "utc": "1998-10-08T09:02:29Z", "ms": 907837348843.8062 }, "end": { "local": "1998-10-09T12:47:58+07:00", "utc": "1998-10-09T05:47:58Z", "ms": 907912077507.6199 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-08T16:02:29+07:00", "utc": "1998-10-08T09:02:29Z", "ms": 907837348843.8062 }, "end": { "local": "1998-10-09T12:47:58+07:00", "utc": "1998-10-09T05:47:58Z", "ms": 907912077507.6199 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-10-08", "window": { "start": { "local": "1998-10-08T20:46:57+07:00", "utc": "1998-10-08T13:46:57Z", "ms": 907854416714.8544 }, "end": { "local": "1998-10-08T20:46:57+07:00", "utc": "1998-10-08T13:46:57Z", "ms": 907854416714.8544 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-10-09", "window": { "start": { "local": "1998-10-09T21:44:10+07:00", "utc": "1998-10-09T14:44:10Z", "ms": 907944250162.8584 }, "end": { "local": "1998-10-09T21:44:10+07:00", "utc": "1998-10-09T14:44:10Z", "ms": 907944250162.8584 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:02 on Thu 8 Oct to 12:48 on Fri 9 Oct.", "fact": "1998-10-08T09:02:29Z → 1998-10-09T05:47:58Z" }, { "step": "kaala", "text": "Moonrise is at 20:47 on the 8th and 21:44 on the 9th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 8th and is not on the 9th.", "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 17068 s" }, { "step": "ruling", "text": "Karaka Caturthī, Medan, 1998: Thursday 8 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": "1998-10-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-08", "confidence": "determinate" } ], "quote": "In Medan, Karaka Caturthī (Karwa Chauth) 1998 falls on Thursday 8 October. Caturthī runs from 16:02 on Thu 8 Oct to 12:48 on Fri 9 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/sankashta-chaturthi?on=1998-10-08", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17068, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-10-08T16:02:29+07:00", "utc": "1998-10-08T09:02:29Z", "ms": 907837348843.8062 }, "end": { "local": "1998-10-09T12:47:58+07:00", "utc": "1998-10-09T05:47:58Z", "ms": 907912077507.6199 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-08T16:02:29+07:00", "utc": "1998-10-08T09:02:29Z", "ms": 907837348843.8062 }, "end": { "local": "1998-10-09T12:47:58+07:00", "utc": "1998-10-09T05:47:58Z", "ms": 907912077507.6199 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-10-08", "window": { "start": { "local": "1998-10-08T20:46:57+07:00", "utc": "1998-10-08T13:46:57Z", "ms": 907854416714.8544 }, "end": { "local": "1998-10-08T20:46:57+07:00", "utc": "1998-10-08T13:46:57Z", "ms": 907854416714.8544 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-10-09", "window": { "start": { "local": "1998-10-09T21:44:10+07:00", "utc": "1998-10-09T14:44:10Z", "ms": 907944250162.8584 }, "end": { "local": "1998-10-09T21:44:10+07:00", "utc": "1998-10-09T14:44:10Z", "ms": 907944250162.8584 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:02 on Thu 8 Oct to 12:48 on Fri 9 Oct.", "fact": "1998-10-08T09:02:29Z → 1998-10-09T05:47:58Z" }, { "step": "kaala", "text": "Moonrise is at 20:47 on the 8th and 21:44 on the 9th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 8th and is not 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 17068 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Medan, 1998: Thursday 8 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": "1998-10-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-08", "confidence": "determinate" } ], "quote": "In Medan, Saṅkaṣṭa Caturthī 1998 falls on Thursday 8 October. Caturthī runs from 16:02 on Thu 8 Oct to 12:48 on Fri 9 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/sankashta-chaturthi?on=1998-10-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19516, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1998-10-12T06:35:09+07:00", "utc": "1998-10-11T23:35:09Z", "ms": 908148908840.5765 }, "end": { "local": "1998-10-13T05:58:04+07:00", "utc": "1998-10-12T22:58:04Z", "ms": 908233083949.2777 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-12T06:35:09+07:00", "utc": "1998-10-11T23:35:09Z", "ms": 908148908840.5765 }, "end": { "local": "1998-10-13T05:58:04+07:00", "utc": "1998-10-12T22:58:04Z", "ms": 908233083949.2777 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-10-11", "window": { "start": { "local": "1998-10-11T23:37:59+07:00", "utc": "1998-10-11T16:37:59Z", "ms": 908123879120.981 }, "end": { "local": "1998-10-11T23:37:59+07:00", "utc": "1998-10-11T16:37:59Z", "ms": 908123879120.981 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-10-12", "window": { "start": { "local": "1998-10-13T00:32:48+07:00", "utc": "1998-10-12T17:32:48Z", "ms": 908213567644.0729 }, "end": { "local": "1998-10-13T00:32:48+07:00", "utc": "1998-10-12T17:32:48Z", "ms": 908213567644.0729 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 06:35 on Mon 12 Oct to 05:58 on Tue 13 Oct.", "fact": "1998-10-11T23:35:09Z → 1998-10-12T22:58:04Z" }, { "step": "kaala", "text": "Moonrise is at 23:38 on the 11th and 00:33 on the 12th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 11th and is on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19516 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Medan, 1998: Monday 12 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ahoyi-ashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Ahoyi astami (Gujerat) (current at moonrise), Karastami (Maharashtra). If occurs on two successive days, it is to be observed on the second day." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-10-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-12", "confidence": "determinate" } ], "quote": "In Medan, Ahoyī Aṣṭamī 1998 falls on Monday 12 October. Aṣṭamī runs from 06:35 on Mon 12 Oct to 05:58 on Tue 13 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-10-16", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2648, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-10-15T06:54:21+07:00", "utc": "1998-10-14T23:54:21Z", "ms": 908409260807.8652 }, "end": { "local": "1998-10-16T08:17:32+07:00", "utc": "1998-10-16T01:17:32Z", "ms": 908500651943.6857 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-15T06:54:21+07:00", "utc": "1998-10-14T23:54:21Z", "ms": 908409260807.8652 }, "end": { "local": "1998-10-16T08:17:32+07:00", "utc": "1998-10-16T01:17:32Z", "ms": 908500651943.6857 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-10-15", "window": { "start": { "local": "1998-10-15T06:10:13+07:00", "utc": "1998-10-14T23:10:13Z", "ms": 908406612960.2758 }, "end": { "local": "1998-10-15T06:10:13+07:00", "utc": "1998-10-14T23:10:13Z", "ms": 908406612960.2758 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-10-16", "window": { "start": { "local": "1998-10-16T06:10:05+07:00", "utc": "1998-10-15T23:10:05Z", "ms": 908493005115.4955 }, "end": { "local": "1998-10-16T06:10:05+07:00", "utc": "1998-10-15T23:10:05Z", "ms": 908493005115.4955 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:54 on Thu 15 Oct to 08:18 on Fri 16 Oct.", "fact": "1998-10-14T23:54:21Z → 1998-10-16T01:17:32Z" }, { "step": "kaala", "text": "Sunrise is at 06:10 on the 15th and 06:10 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 2648 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Medan, 1998: Friday 16 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": "1998-10-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-16", "confidence": "determinate" } ], "quote": "In Medan, Ramā Ekādaśī 1998 falls on Friday 16 October. Ekādaśī runs from 06:54 on Thu 15 Oct to 08:18 on Fri 16 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-10-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29026, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1998-10-16T08:17:32+07:00", "utc": "1998-10-16T01:17:32Z", "ms": 908500651943.6857 }, "end": { "local": "1998-10-17T10:07:48+07:00", "utc": "1998-10-17T03:07:48Z", "ms": 908593668418.8948 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-16T08:17:32+07:00", "utc": "1998-10-16T01:17:32Z", "ms": 908500651943.6857 }, "end": { "local": "1998-10-17T10:07:48+07:00", "utc": "1998-10-17T03:07:48Z", "ms": 908593668418.8948 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-10-16", "window": { "start": { "local": "1998-10-16T18:11:52+07:00", "utc": "1998-10-16T11:11:52Z", "ms": 908536311873.8108 }, "end": { "local": "1998-10-16T19:47:37+07:00", "utc": "1998-10-16T12:47:37Z", "ms": 908542056667.1738 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1998-10-17", "window": { "start": { "local": "1998-10-17T18:11:34+07:00", "utc": "1998-10-17T11:11:34Z", "ms": 908622693948.8988 }, "end": { "local": "1998-10-17T19:47:20+07:00", "utc": "1998-10-17T12:47:20Z", "ms": 908628440235.6492 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 08:18 on Fri 16 Oct to 10:08 on Sat 17 Oct.", "fact": "1998-10-16T01:17:32Z → 1998-10-17T03:07:48Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:12–19:48 on the 16th, 18:12–19:47 on the 17th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 96 of 96 minutes on the 16th and 0 of 96 on the 17th.", "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 29026 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Medan, 1998: Friday 16 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-10-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-16", "confidence": "determinate" } ], "quote": "In Medan, Govatsa Dvādaśī (Vasu Baras) 1998 falls on Friday 16 October. Dvādaśī runs from 08:18 on Fri 16 Oct to 10:08 on Sat 17 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21223, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-10-17T10:07:48+07:00", "utc": "1998-10-17T03:07:48Z", "ms": 908593668418.8948 }, "end": { "local": "1998-10-18T12:17:34+07:00", "utc": "1998-10-18T05:17:34Z", "ms": 908687853829.1849 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-17T10:07:48+07:00", "utc": "1998-10-17T03:07:48Z", "ms": 908593668418.8948 }, "end": { "local": "1998-10-18T12:17:34+07:00", "utc": "1998-10-18T05:17:34Z", "ms": 908687853829.1849 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-10-17", "window": { "start": { "local": "1998-10-17T18:11:34+07:00", "utc": "1998-10-17T11:11:34Z", "ms": 908622693948.8988 }, "end": { "local": "1998-10-17T19:47:20+07:00", "utc": "1998-10-17T12:47:20Z", "ms": 908628440235.6492 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1998-10-18", "window": { "start": { "local": "1998-10-18T18:11:17+07:00", "utc": "1998-10-18T11:11:17Z", "ms": 908709076655.7184 }, "end": { "local": "1998-10-18T19:47:04+07:00", "utc": "1998-10-18T12:47:04Z", "ms": 908714824428.9563 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:08 on Sat 17 Oct to 12:18 on Sun 18 Oct.", "fact": "1998-10-17T03:07:48Z → 1998-10-18T05:17:34Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:12–19:47 on the 17th, 18:11–19:47 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 96 of 96 minutes on the 17th and 0 of 96 on the 18th.", "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 21223 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Medan, 1998: Saturday 17 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dipadana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 13 Yama dipadana (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-10-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-17", "confidence": "determinate" } ], "quote": "In Medan, Yama Dīpadāna 1998 falls on Saturday 17 October. Trayodaśī runs from 10:08 on Sat 17 Oct to 12:18 on Sun 18 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/pradosha-vrata?on=1998-10-17", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21223, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-10-17T10:07:48+07:00", "utc": "1998-10-17T03:07:48Z", "ms": 908593668418.8948 }, "end": { "local": "1998-10-18T12:17:34+07:00", "utc": "1998-10-18T05:17:34Z", "ms": 908687853829.1849 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-17T10:07:48+07:00", "utc": "1998-10-17T03:07:48Z", "ms": 908593668418.8948 }, "end": { "local": "1998-10-18T12:17:34+07:00", "utc": "1998-10-18T05:17:34Z", "ms": 908687853829.1849 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-10-17", "window": { "start": { "local": "1998-10-17T18:11:34+07:00", "utc": "1998-10-17T11:11:34Z", "ms": 908622693948.8988 }, "end": { "local": "1998-10-17T19:47:20+07:00", "utc": "1998-10-17T12:47:20Z", "ms": 908628440235.6492 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1998-10-18", "window": { "start": { "local": "1998-10-18T18:11:17+07:00", "utc": "1998-10-18T11:11:17Z", "ms": 908709076655.7184 }, "end": { "local": "1998-10-18T19:47:04+07:00", "utc": "1998-10-18T12:47:04Z", "ms": 908714824428.9563 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:08 on Sat 17 Oct to 12:18 on Sun 18 Oct.", "fact": "1998-10-17T03:07:48Z → 1998-10-18T05:17:34Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:12–19:47 on the 17th, 18:11–19:47 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 96 of 96 minutes on the 17th and 0 of 96 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 21223 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Medan, 1998: Saturday 17 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": "1998-10-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-17", "confidence": "determinate" } ], "quote": "In Medan, Kṛṣṇa Pradoṣa Vrata 1998 falls on Saturday 17 October. Trayodaśī runs from 10:08 on Sat 17 Oct to 12:18 on Sun 18 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-10-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/shivaratri?on=1998-10-18", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32781, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-10-18T12:17:34+07:00", "utc": "1998-10-18T05:17:34Z", "ms": 908687853829.1849 }, "end": { "local": "1998-10-19T14:39:59+07:00", "utc": "1998-10-19T07:39:59Z", "ms": 908782799075.0334 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-18T12:17:34+07:00", "utc": "1998-10-18T05:17:34Z", "ms": 908687853829.1849 }, "end": { "local": "1998-10-19T14:39:59+07:00", "utc": "1998-10-19T07:39:59Z", "ms": 908782799075.0334 } }, "kaala": "nishita", "days": [ { "local_date": "1998-10-18", "window": { "start": { "local": "1998-10-18T23:46:31+07:00", "utc": "1998-10-18T16:46:31Z", "ms": 908729190805.3604 }, "end": { "local": "1998-10-19T00:34:31+07:00", "utc": "1998-10-18T17:34:31Z", "ms": 908732070805.3604 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-10-19", "window": { "start": { "local": "1998-10-19T23:46:20+07:00", "utc": "1998-10-19T16:46:20Z", "ms": 908815579706.2217 }, "end": { "local": "1998-10-20T00:34:20+07:00", "utc": "1998-10-19T17:34:20Z", "ms": 908818459706.2217 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:18 on Sun 18 Oct to 14:40 on Mon 19 Oct.", "fact": "1998-10-18T05:17:34Z → 1998-10-19T07:39:59Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:47–00:35 on the 18th, 23:46–00:34 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 32781 s" }, { "step": "ruling", "text": "Śivarātri, Medan, 1998: Sunday 18 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": "1998-10-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-18", "confidence": "determinate" } ], "quote": "In Medan, Śivarātri 1998 falls on Sunday 18 October. Caturdaśī runs from 12:18 on Sun 18 Oct to 14:40 on Mon 19 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/shivaratri?on=1998-10-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22063, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-10-18T12:17:34+07:00", "utc": "1998-10-18T05:17:34Z", "ms": 908687853829.1849 }, "end": { "local": "1998-10-19T14:39:59+07:00", "utc": "1998-10-19T07:39:59Z", "ms": 908782799075.0334 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-18T12:17:34+07:00", "utc": "1998-10-18T05:17:34Z", "ms": 908687853829.1849 }, "end": { "local": "1998-10-19T14:39:59+07:00", "utc": "1998-10-19T07:39:59Z", "ms": 908782799075.0334 } }, "kaala": "arunodaya", "days": [ { "local_date": "1998-10-18", "window": { "start": { "local": "1998-10-18T04:34:05+07:00", "utc": "1998-10-17T21:34:05Z", "ms": 908660044812.7758 }, "end": { "local": "1998-10-18T06:09:51+07:00", "utc": "1998-10-17T23:09:51Z", "ms": 908665791099.5261 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "1998-10-19", "window": { "start": { "local": "1998-10-19T04:33:57+07:00", "utc": "1998-10-18T21:33:57Z", "ms": 908746437181.7644 }, "end": { "local": "1998-10-19T06:09:45+07:00", "utc": "1998-10-18T23:09:45Z", "ms": 908752184955.0023 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:18 on Sun 18 Oct to 14:40 on Mon 19 Oct.", "fact": "1998-10-18T05:17:34Z → 1998-10-19T07:39:59Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:34–06:10 on the 18th, 04:34–06:10 on the 19th.", "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 96 minutes on the 18th and 96 of 96 on the 19th.", "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 22063 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Medan, 1998: Monday 19 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naraka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Naraka caturdasi (covering a period of 4 ghatikas before sunrise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "arunodaya", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-19", "confidence": "determinate" } ], "quote": "In Medan, Naraka Caturdaśī (Choti Diwali) 1998 falls on Monday 19 October. Caturdaśī runs from 12:18 on Sun 18 Oct to 14:40 on Mon 19 Oct and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3681, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1998-10-19T14:39:59+07:00", "utc": "1998-10-19T07:39:59Z", "ms": 908782799075.0334 }, "end": { "local": "1998-10-20T17:09:23+07:00", "utc": "1998-10-20T10:09:23Z", "ms": 908878163206.5729 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-19T14:39:59+07:00", "utc": "1998-10-19T07:39:59Z", "ms": 908782799075.0334 }, "end": { "local": "1998-10-20T17:09:23+07:00", "utc": "1998-10-20T10:09:23Z", "ms": 908878163206.5729 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-10-19", "window": { "start": { "local": "1998-10-19T18:11:00+07:00", "utc": "1998-10-19T11:11:00Z", "ms": 908795460009.5128 }, "end": { "local": "1998-10-19T19:46:49+07:00", "utc": "1998-10-19T12:46:49Z", "ms": 908801209261.9685 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1998-10-20", "window": { "start": { "local": "1998-10-20T18:10:44+07:00", "utc": "1998-10-20T11:10:44Z", "ms": 908881844025.049 }, "end": { "local": "1998-10-20T19:46:35+07:00", "utc": "1998-10-20T12:46:35Z", "ms": 908887594749.0779 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 14:40 on Mon 19 Oct to 17:09 on Tue 20 Oct.", "fact": "1998-10-19T07:39:59Z → 1998-10-20T10:09:23Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:11–19:47 on the 19th, 18:11–19:47 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 96 of 96 minutes on the 19th and 0 of 96 on the 20th.", "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 3681 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Medan, 1998: Monday 19 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "diwali-lakshmi-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-19", "confidence": "determinate" } ], "quote": "In Medan, Lakṣmī Pūjā (Diwali) 1998 falls on Monday 19 October. Amāvasyā runs from 14:40 on Mon 19 Oct to 17:09 on Tue 20 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23806, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1998-10-19T14:39:59+07:00", "utc": "1998-10-19T07:39:59Z", "ms": 908782799075.0334 }, "end": { "local": "1998-10-20T17:09:23+07:00", "utc": "1998-10-20T10:09:23Z", "ms": 908878163206.5729 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-19T14:39:59+07:00", "utc": "1998-10-19T07:39:59Z", "ms": 908782799075.0334 }, "end": { "local": "1998-10-20T17:09:23+07:00", "utc": "1998-10-20T10:09:23Z", "ms": 908878163206.5729 } }, "kaala": "nishita", "days": [ { "local_date": "1998-10-19", "window": { "start": { "local": "1998-10-19T23:46:20+07:00", "utc": "1998-10-19T16:46:20Z", "ms": 908815579706.2217 }, "end": { "local": "1998-10-20T00:34:20+07:00", "utc": "1998-10-19T17:34:20Z", "ms": 908818459706.2217 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-10-20", "window": { "start": { "local": "1998-10-20T23:46:09+07:00", "utc": "1998-10-20T16:46:09Z", "ms": 908901969240.1575 }, "end": { "local": "1998-10-21T00:34:09+07:00", "utc": "1998-10-20T17:34:09Z", "ms": 908904849240.1575 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 14:40 on Mon 19 Oct to 17:09 on Tue 20 Oct.", "fact": "1998-10-19T07:39:59Z → 1998-10-20T10:09:23Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:46–00:34 on the 19th, 23:46–00:34 on the 20th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 48 of 48 minutes on the 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 night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23806 s" }, { "step": "ruling", "text": "Kālī Pūjā, Medan, 1998: Monday 19 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-19", "confidence": "determinate" } ], "quote": "In Medan, Kālī Pūjā 1998 falls on Monday 19 October. Amāvasyā runs from 14:40 on Mon 19 Oct to 17:09 on Tue 20 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-20", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 320, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1998-10-20T17:09:23+07:00", "utc": "1998-10-20T10:09:23Z", "ms": 908878163206.5729 }, "end": { "local": "1998-10-21T19:41:01+07:00", "utc": "1998-10-21T12:41:01Z", "ms": 908973660959.931 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-20T17:09:23+07:00", "utc": "1998-10-20T10:09:23Z", "ms": 908878163206.5729 }, "end": { "local": "1998-10-21T19:41:01+07:00", "utc": "1998-10-21T12:41:01Z", "ms": 908973660959.931 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-10-20", "window": { "start": { "local": "1998-10-20T18:10:44+07:00", "utc": "1998-10-20T11:10:44Z", "ms": 908881844025.049 }, "end": { "local": "1998-10-20T19:46:35+07:00", "utc": "1998-10-20T12:46:35Z", "ms": 908887594749.0779 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1998-10-21", "window": { "start": { "local": "1998-10-21T18:10:29+07:00", "utc": "1998-10-21T11:10:29Z", "ms": 908968228716.667 }, "end": { "local": "1998-10-21T19:46:21+07:00", "utc": "1998-10-21T12:46:21Z", "ms": 908973980904.2443 } }, "covered_min": 91, "window_min": 96, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 17:09 on Tue 20 Oct to 19:41 on Wed 21 Oct.", "fact": "1998-10-20T10:09:23Z → 1998-10-21T12:41:01Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:11–19:47 on the 20th, 18:10–19:46 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 96 of 96 minutes on the 20th and 91 of 96 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 320 s" }, { "step": "ruling", "text": "Bali Pūjā, Medan, 1998: Tuesday 20 October.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "1998-10-20", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-20", "confidence": "boundary" } ], "quote": "In Medan, Bali Pūjā 1998 falls on Tuesday 20 October. Pratipadā runs from 17:09 on Tue 20 Oct to 19:41 on Wed 21 Oct and covers all of pradoṣa that evening. It also reaches the next evening for 91 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/medan/festivals/1998/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": "/medan/festivals/1998/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16511, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1998-10-20T17:09:23+07:00", "utc": "1998-10-20T10:09:23Z", "ms": 908878163206.5729 }, "end": { "local": "1998-10-21T19:41:01+07:00", "utc": "1998-10-21T12:41:01Z", "ms": 908973660959.931 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-20T17:09:23+07:00", "utc": "1998-10-20T10:09:23Z", "ms": 908878163206.5729 }, "end": { "local": "1998-10-21T19:41:01+07:00", "utc": "1998-10-21T12:41:01Z", "ms": 908973660959.931 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-10-20", "window": { "start": { "local": "1998-10-20T11:46:12+07:00", "utc": "1998-10-20T04:46:12Z", "ms": 908858771713.9897 }, "end": { "local": "1998-10-20T12:34:12+07:00", "utc": "1998-10-20T05:34:12Z", "ms": 908861651713.9897 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-10-21", "window": { "start": { "local": "1998-10-21T11:46:02+07:00", "utc": "1998-10-21T04:46:02Z", "ms": 908945161585.9666 }, "end": { "local": "1998-10-21T12:34:02+07:00", "utc": "1998-10-21T05:34:02Z", "ms": 908948041585.9666 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 17:09 on Tue 20 Oct to 19:41 on Wed 21 Oct.", "fact": "1998-10-20T10:09:23Z → 1998-10-21T12:41:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 20th, 11:46–12:34 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 16511 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Medan, 1998: Wednesday 21 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govardhana-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-10-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-21", "confidence": "determinate" } ], "quote": "In Medan, Govardhana Pūjā 1998 falls on Wednesday 21 October. Pratipadā runs from 17:09 on Tue 20 Oct to 19:41 on Wed 21 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25162, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1998-10-20T17:09:23+07:00", "utc": "1998-10-20T10:09:23Z", "ms": 908878163206.5729 }, "end": { "local": "1998-10-21T19:41:01+07:00", "utc": "1998-10-21T12:41:01Z", "ms": 908973660959.931 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-20T17:09:23+07:00", "utc": "1998-10-20T10:09:23Z", "ms": 908878163206.5729 }, "end": { "local": "1998-10-21T19:41:01+07:00", "utc": "1998-10-21T12:41:01Z", "ms": 908973660959.931 } }, "kaala": "purvahna", "days": [ { "local_date": "1998-10-20", "window": { "start": { "local": "1998-10-20T06:09:39+07:00", "utc": "1998-10-19T23:09:39Z", "ms": 908838579402.9305 }, "end": { "local": "1998-10-20T10:10:01+07:00", "utc": "1998-10-20T03:10:01Z", "ms": 908853000943.6367 } }, "covered_min": 0, "window_min": 240, "qualifies": false }, { "local_date": "1998-10-21", "window": { "start": { "local": "1998-10-21T06:09:34+07:00", "utc": "1998-10-20T23:09:34Z", "ms": 908924974455.266 }, "end": { "local": "1998-10-21T10:09:53+07:00", "utc": "1998-10-21T03:09:53Z", "ms": 908939392542.3997 } }, "covered_min": 240, "window_min": 240, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 17:09 on Tue 20 Oct to 19:41 on Wed 21 Oct.", "fact": "1998-10-20T10:09:23Z → 1998-10-21T12:41:01Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:10–10:10 on the 20th, 06:10–10:10 on the 21st.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 0 of 240 minutes on the 20th and 240 of 240 on the 21st.", "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 25162 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Medan, 1998: Wednesday 21 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dyuta-pratipad", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-10-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-21", "confidence": "determinate" } ], "quote": "In Medan, Dyūta Pratipad 1998 falls on Wednesday 21 October. Pratipadā runs from 17:09 on Tue 20 Oct to 19:41 on Wed 21 Oct and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25619, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1998-10-21T19:41:01+07:00", "utc": "1998-10-21T12:41:01Z", "ms": 908973660959.931 }, "end": { "local": "1998-10-22T22:10:26+07:00", "utc": "1998-10-22T15:10:26Z", "ms": 909069026272.2826 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-21T19:41:01+07:00", "utc": "1998-10-21T12:41:01Z", "ms": 908973660959.931 }, "end": { "local": "1998-10-22T22:10:26+07:00", "utc": "1998-10-22T15:10:26Z", "ms": 909069026272.2826 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-10-21", "window": { "start": { "local": "1998-10-21T11:46:02+07:00", "utc": "1998-10-21T04:46:02Z", "ms": 908945161585.9666 }, "end": { "local": "1998-10-21T12:34:02+07:00", "utc": "1998-10-21T05:34:02Z", "ms": 908948041585.9666 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-10-22", "window": { "start": { "local": "1998-10-22T11:45:52+07:00", "utc": "1998-10-22T04:45:52Z", "ms": 909031552110.9125 }, "end": { "local": "1998-10-22T12:33:52+07:00", "utc": "1998-10-22T05:33:52Z", "ms": 909034432110.9125 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 19:41 on Wed 21 Oct to 22:10 on Thu 22 Oct.", "fact": "1998-10-21T12:41:01Z → 1998-10-22T15:10:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 21st, 11:46–12:34 on the 22nd.", "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 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25619 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Medan, 1998: Thursday 22 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dvitiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Bhratrdvitiya, Yamadvitiya (madhyahna, purvaviddha), Masyadhara (Dwat) puja (Bihar)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-10-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-22", "confidence": "determinate" } ], "quote": "In Medan, Yama Dvitīyā (Bhai Dooj) 1998 falls on Thursday 22 October. Dvitīyā runs from 19:41 on Wed 21 Oct to 22:10 on Thu 22 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32596, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-10-24T00:32:47+07:00", "utc": "1998-10-23T17:32:47Z", "ms": 909163967412.0046 }, "end": { "local": "1998-10-25T02:42:11+07:00", "utc": "1998-10-24T19:42:11Z", "ms": 909258131364.5919 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-24T00:32:47+07:00", "utc": "1998-10-23T17:32:47Z", "ms": 909163967412.0046 }, "end": { "local": "1998-10-25T02:42:11+07:00", "utc": "1998-10-24T19:42:11Z", "ms": 909258131364.5919 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-10-24", "window": { "start": { "local": "1998-10-24T11:45:35+07:00", "utc": "1998-10-24T04:45:35Z", "ms": 909204335168.7437 }, "end": { "local": "1998-10-24T12:33:35+07:00", "utc": "1998-10-24T05:33:35Z", "ms": 909207215168.7437 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-10-25", "window": { "start": { "local": "1998-10-25T11:45:28+07:00", "utc": "1998-10-25T04:45:28Z", "ms": 909290727725.3528 }, "end": { "local": "1998-10-25T12:33:28+07:00", "utc": "1998-10-25T05:33:28Z", "ms": 909293607725.3528 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:33 on Sat 24 Oct to 02:42 on Sun 25 Oct.", "fact": "1998-10-23T17:32:47Z → 1998-10-24T19:42:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 24th, 11:45–12:33 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32596 s" }, { "step": "ruling", "text": "Nāga Caturthī, Medan, 1998: Saturday 24 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Naga caturthi (paraviddha and madhyahnavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-24", "confidence": "determinate" } ], "quote": "In Medan, Nāga Caturthī 1998 falls on Saturday 24 October. Caturthī runs from 00:33 on Sat 24 Oct to 02:42 on Sun 25 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/vinayaka-chaturthi?on=1998-10-24", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32596, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-10-24T00:32:47+07:00", "utc": "1998-10-23T17:32:47Z", "ms": 909163967412.0046 }, "end": { "local": "1998-10-25T02:42:11+07:00", "utc": "1998-10-24T19:42:11Z", "ms": 909258131364.5919 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-24T00:32:47+07:00", "utc": "1998-10-23T17:32:47Z", "ms": 909163967412.0046 }, "end": { "local": "1998-10-25T02:42:11+07:00", "utc": "1998-10-24T19:42:11Z", "ms": 909258131364.5919 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-10-24", "window": { "start": { "local": "1998-10-24T11:45:35+07:00", "utc": "1998-10-24T04:45:35Z", "ms": 909204335168.7437 }, "end": { "local": "1998-10-24T12:33:35+07:00", "utc": "1998-10-24T05:33:35Z", "ms": 909207215168.7437 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-10-25", "window": { "start": { "local": "1998-10-25T11:45:28+07:00", "utc": "1998-10-25T04:45:28Z", "ms": 909290727725.3528 }, "end": { "local": "1998-10-25T12:33:28+07:00", "utc": "1998-10-25T05:33:28Z", "ms": 909293607725.3528 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:33 on Sat 24 Oct to 02:42 on Sun 25 Oct.", "fact": "1998-10-23T17:32:47Z → 1998-10-24T19:42:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 24th, 11:45–12:33 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32596 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Medan, 1998: Saturday 24 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": "1998-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-24", "confidence": "determinate" } ], "quote": "In Medan, Vināyaka Caturthī 1998 falls on Saturday 24 October. Caturthī runs from 00:33 on Sat 24 Oct to 02:42 on Sun 25 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/vinayaka-chaturthi?on=1998-10-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21135, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1998-10-26T04:31:33+07:00", "utc": "1998-10-25T21:31:33Z", "ms": 909351093215.4329 }, "end": { "local": "1998-10-27T05:53:00+07:00", "utc": "1998-10-26T22:53:00Z", "ms": 909442379706.3696 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-26T04:31:33+07:00", "utc": "1998-10-25T21:31:33Z", "ms": 909351093215.4329 }, "end": { "local": "1998-10-27T05:53:00+07:00", "utc": "1998-10-26T22:53:00Z", "ms": 909442379706.3696 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-10-26", "window": { "start": { "local": "1998-10-26T11:45:21+07:00", "utc": "1998-10-26T04:45:21Z", "ms": 909377120982.4414 }, "end": { "local": "1998-10-26T12:33:21+07:00", "utc": "1998-10-26T05:33:21Z", "ms": 909380000982.4414 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-10-27", "window": { "start": { "local": "1998-10-27T11:45:15+07:00", "utc": "1998-10-27T04:45:15Z", "ms": 909463514951.2625 }, "end": { "local": "1998-10-27T12:33:15+07:00", "utc": "1998-10-27T05:33:15Z", "ms": 909466394951.2625 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 04:32 on Mon 26 Oct to 05:53 on Tue 27 Oct.", "fact": "1998-10-25T21:31:33Z → 1998-10-26T22:53:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 26th, 11:45–12:33 on the 27th.", "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 26th and 0 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21135 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Medan, 1998: Monday 26 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Nadi sasthi, Skanda sasthi (Madras), Surya sasthi, Chhat (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-10-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-26", "confidence": "determinate" } ], "quote": "In Medan, Sūrya Ṣaṣṭhī (Chhath) 1998 falls on Monday 26 October. Ṣaṣṭhī runs from 04:32 on Mon 26 Oct to 05:53 on Tue 27 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18163, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1998-10-28T06:38:45+07:00", "utc": "1998-10-27T23:38:45Z", "ms": 909531524753.5771 }, "end": { "local": "1998-10-29T06:42:22+07:00", "utc": "1998-10-28T23:42:22Z", "ms": 909618141928.9229 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-28T06:38:45+07:00", "utc": "1998-10-27T23:38:45Z", "ms": 909531524753.5771 }, "end": { "local": "1998-10-29T06:42:22+07:00", "utc": "1998-10-28T23:42:22Z", "ms": 909618141928.9229 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-10-28", "window": { "start": { "local": "1998-10-28T11:45:10+07:00", "utc": "1998-10-28T04:45:10Z", "ms": 909549909642.945 }, "end": { "local": "1998-10-28T12:33:10+07:00", "utc": "1998-10-28T05:33:10Z", "ms": 909552789642.945 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-10-29", "window": { "start": { "local": "1998-10-29T11:45:05+07:00", "utc": "1998-10-29T04:45:05Z", "ms": 909636305068.6033 }, "end": { "local": "1998-10-29T12:33:05+07:00", "utc": "1998-10-29T05:33:05Z", "ms": 909639185068.6033 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 06:39 on Wed 28 Oct to 06:42 on Thu 29 Oct.", "fact": "1998-10-27T23:38:45Z → 1998-10-28T23:42:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 28th, 11:45–12:33 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18163 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Medan, 1998: Wednesday 28 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gopashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Gopastami, Gosthastami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-10-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-28", "confidence": "determinate" } ], "quote": "In Medan, Gopāṣṭamī 1998 falls on Wednesday 28 October. Aṣṭamī runs from 06:39 on Wed 28 Oct to 06:42 on Thu 29 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 567, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1998-10-29T06:42:22+07:00", "utc": "1998-10-28T23:42:22Z", "ms": 909618141928.9229 }, "end": { "local": "1998-10-30T05:59:52+07:00", "utc": "1998-10-29T22:59:52Z", "ms": 909701991534.609 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-29T06:42:22+07:00", "utc": "1998-10-28T23:42:22Z", "ms": 909618141928.9229 }, "end": { "local": "1998-10-30T05:59:52+07:00", "utc": "1998-10-29T22:59:52Z", "ms": 909701991534.609 } }, "kaala": "purvahna", "days": [ { "local_date": "1998-10-29", "window": { "start": { "local": "1998-10-29T06:09:18+07:00", "utc": "1998-10-28T23:09:18Z", "ms": 909616157932.9468 }, "end": { "local": "1998-10-29T10:09:09+07:00", "utc": "1998-10-29T03:09:09Z", "ms": 909630549356.7178 } }, "covered_min": 207, "window_min": 240, "qualifies": true }, { "local_date": "1998-10-30", "window": { "start": { "local": "1998-10-30T06:09:19+07:00", "utc": "1998-10-29T23:09:19Z", "ms": 909702558900.5643 }, "end": { "local": "1998-10-30T10:09:07+07:00", "utc": "1998-10-30T03:09:07Z", "ms": 909716947126.514 } }, "covered_min": 0, "window_min": 240, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 06:42 on Thu 29 Oct to 06:00 on Fri 30 Oct.", "fact": "1998-10-28T23:42:22Z → 1998-10-29T22:59:52Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:09–10:09 on the 29th, 06:09–10:09 on the 30th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 207 of 240 minutes on the 29th and 0 of 240 on the 30th.", "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 567 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Medan, 1998: Thursday 29 October.", "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": "1998-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-29", "confidence": "determinate" } ], "quote": "In Medan, Akṣaya Navamī (Amla Navami) 1998 falls on Thursday 29 October. Navamī runs from 06:42 on Thu 29 Oct to 06:00 on Fri 30 Oct and covers 207 of 240 minutes of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18163, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1998-10-29T06:42:22+07:00", "utc": "1998-10-28T23:42:22Z", "ms": 909618141928.9229 }, "end": { "local": "1998-10-30T05:59:52+07:00", "utc": "1998-10-29T22:59:52Z", "ms": 909701991534.609 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-29T06:42:22+07:00", "utc": "1998-10-28T23:42:22Z", "ms": 909618141928.9229 }, "end": { "local": "1998-10-30T05:59:52+07:00", "utc": "1998-10-29T22:59:52Z", "ms": 909701991534.609 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-10-29", "window": { "start": { "local": "1998-10-29T11:45:05+07:00", "utc": "1998-10-29T04:45:05Z", "ms": 909636305068.6033 }, "end": { "local": "1998-10-29T12:33:05+07:00", "utc": "1998-10-29T05:33:05Z", "ms": 909639185068.6033 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-10-30", "window": { "start": { "local": "1998-10-30T11:45:01+07:00", "utc": "1998-10-30T04:45:01Z", "ms": 909722701239.4889 }, "end": { "local": "1998-10-30T12:33:01+07:00", "utc": "1998-10-30T05:33:01Z", "ms": 909725581239.4889 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 06:42 on Thu 29 Oct to 06:00 on Fri 30 Oct.", "fact": "1998-10-28T23:42:22Z → 1998-10-29T22:59:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 29th, 11:45–12:33 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18163 s" }, { "step": "ruling", "text": "Durgā Navamī, Medan, 1998: Thursday 29 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-29", "confidence": "determinate" } ], "quote": "In Medan, Durgā Navamī 1998 falls on Thursday 29 October. Navamī runs from 06:42 on Thu 29 Oct to 06:00 on Fri 30 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-10-31", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5938, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-10-31T04:30:23+07:00", "utc": "1998-10-30T21:30:23Z", "ms": 909783022955.9021 }, "end": { "local": "1998-11-01T02:16:25+07:00", "utc": "1998-10-31T19:16:25Z", "ms": 909861384517.9103 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-10-31T04:30:23+07:00", "utc": "1998-10-30T21:30:23Z", "ms": 909783022955.9021 }, "end": { "local": "1998-11-01T02:16:25+07:00", "utc": "1998-10-31T19:16:25Z", "ms": 909861384517.9103 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-10-31", "window": { "start": { "local": "1998-10-31T06:09:21+07:00", "utc": "1998-10-30T23:09:21Z", "ms": 909788960574.6245 }, "end": { "local": "1998-10-31T06:09:21+07:00", "utc": "1998-10-30T23:09:21Z", "ms": 909788960574.6245 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-11-01", "window": { "start": { "local": "1998-11-01T06:09:23+07:00", "utc": "1998-10-31T23:09:23Z", "ms": 909875362965.459 }, "end": { "local": "1998-11-01T06:09:23+07:00", "utc": "1998-10-31T23:09:23Z", "ms": 909875362965.459 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:30 on Sat 31 Oct to 02:16 on Sun 1 Nov.", "fact": "1998-10-30T21:30:23Z → 1998-10-31T19:16:25Z" }, { "step": "kaala", "text": "Sunrise is at 06:09 on the 31st and 06:09 on the 1st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 31st 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 5938 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Medan, 1998: Saturday 31 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": "1998-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-10-31", "confidence": "determinate" } ], "quote": "In Medan, Prabodhinī Ekādaśī 1998 falls on Saturday 31 October. Ekādaśī runs from 04:30 on Sat 31 Oct to 02:16 on Sun 1 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-10-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-11-02", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 891, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-11-01T23:23:26+07:00", "utc": "1998-11-01T16:23:26Z", "ms": 909937405563.1315 }, "end": { "local": "1998-11-02T19:59:22+07:00", "utc": "1998-11-02T12:59:22Z", "ms": 910011562319.3094 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-11-01T23:23:26+07:00", "utc": "1998-11-01T16:23:26Z", "ms": 909937405563.1315 }, "end": { "local": "1998-11-02T19:59:22+07:00", "utc": "1998-11-02T12:59:22Z", "ms": 910011562319.3094 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-11-01", "window": { "start": { "local": "1998-11-01T18:08:29+07:00", "utc": "1998-11-01T11:08:29Z", "ms": 909918508762.078 }, "end": { "local": "1998-11-01T19:44:36+07:00", "utc": "1998-11-01T12:44:36Z", "ms": 909924276405.0155 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "1998-11-02", "window": { "start": { "local": "1998-11-02T18:08:23+07:00", "utc": "1998-11-02T11:08:23Z", "ms": 910004902599.8796 }, "end": { "local": "1998-11-02T19:44:32+07:00", "utc": "1998-11-02T12:44:32Z", "ms": 910010671578.8268 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:23 on Sun 1 Nov to 19:59 on Mon 2 Nov.", "fact": "1998-11-01T16:23:26Z → 1998-11-02T12:59:22Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:08–19:45 on the 1st, 18:08–19:45 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 96 minutes on the 1st and 96 of 96 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 891 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Medan, 1998: Monday 2 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": "1998-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-02", "confidence": "determinate" } ], "quote": "In Medan, Śukla Pradoṣa Vrata 1998 falls on Monday 2 November. Trayodaśī runs from 23:23 on Sun 1 Nov to 19:59 on Mon 2 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-11-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27057, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-11-03T16:13:59+07:00", "utc": "1998-11-03T09:13:59Z", "ms": 910084439028.0663 }, "end": { "local": "1998-11-04T12:18:12+07:00", "utc": "1998-11-04T05:18:12Z", "ms": 910156691519.1667 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-11-03T16:13:59+07:00", "utc": "1998-11-03T09:13:59Z", "ms": 910084439028.0663 }, "end": { "local": "1998-11-04T12:18:12+07:00", "utc": "1998-11-04T05:18:12Z", "ms": 910156691519.1667 } }, "kaala": "nishita", "days": [ { "local_date": "1998-11-03", "window": { "start": { "local": "1998-11-03T23:44:56+07:00", "utc": "1998-11-03T16:44:56Z", "ms": 910111495919.423 }, "end": { "local": "1998-11-04T00:32:56+07:00", "utc": "1998-11-03T17:32:56Z", "ms": 910114375919.423 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-11-04", "window": { "start": { "local": "1998-11-04T23:44:56+07:00", "utc": "1998-11-04T16:44:56Z", "ms": 910197896381.8713 }, "end": { "local": "1998-11-05T00:32:56+07:00", "utc": "1998-11-04T17:32:56Z", "ms": 910200776381.8713 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:14 on Tue 3 Nov to 12:18 on Wed 4 Nov.", "fact": "1998-11-03T09:13:59Z → 1998-11-04T05:18:12Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:45–00:33 on the 3rd, 23:45–00:33 on the 4th.", "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 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27057 s" }, { "step": "ruling", "text": "Rāsayātrā, Medan, 1998: Tuesday 3 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": "1998-11-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-03", "confidence": "determinate" } ], "quote": "In Medan, Rāsayātrā 1998 falls on Tuesday 3 November. Pūrṇimā runs from 16:14 on Tue 3 Nov to 12:18 on Wed 4 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 882, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-11-03T16:13:59+07:00", "utc": "1998-11-03T09:13:59Z", "ms": 910084439028.0663 }, "end": { "local": "1998-11-04T12:18:12+07:00", "utc": "1998-11-04T05:18:12Z", "ms": 910156691519.1667 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1998-11-03T16:13:59+07:00", "utc": "1998-11-03T09:13:59Z", "ms": 910084439028.0663 }, "end": { "local": "1998-11-04T12:18:12+07:00", "utc": "1998-11-04T05:18:12Z", "ms": 910156691519.1667 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-11-03", "window": { "start": { "local": "1998-11-03T11:44:54+07:00", "utc": "1998-11-03T04:44:54Z", "ms": 910068293614.9587 }, "end": { "local": "1998-11-03T12:32:54+07:00", "utc": "1998-11-03T05:32:54Z", "ms": 910071173614.9587 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-11-04", "window": { "start": { "local": "1998-11-04T11:44:54+07:00", "utc": "1998-11-04T04:44:54Z", "ms": 910154693696.0521 }, "end": { "local": "1998-11-04T12:32:54+07:00", "utc": "1998-11-04T05:32:54Z", "ms": 910157573696.0521 } }, "covered_min": 33, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:14 on Tue 3 Nov to 12:18 on Wed 4 Nov.", "fact": "1998-11-03T09:13:59Z → 1998-11-04T05:18:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 3rd, 11:45–12:33 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 33 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 882 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Medan, 1998: Wednesday 4 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": "1998-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-04", "confidence": "determinate" } ], "quote": "In Medan, Kārtikī Pūrṇimā 1998 falls on Wednesday 4 November. Pūrṇimā runs from 16:14 on Tue 3 Nov to 12:18 on Wed 4 Nov and covers 33 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/sankashta-chaturthi?on=1998-11-07", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4601, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-11-07T01:24:40+07:00", "utc": "1998-11-06T18:24:40Z", "ms": 910376680043.7949 }, "end": { "local": "1998-11-07T22:42:14+07:00", "utc": "1998-11-07T15:42:14Z", "ms": 910453334466.3201 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-11-07T01:24:40+07:00", "utc": "1998-11-06T18:24:40Z", "ms": 910376680043.7949 }, "end": { "local": "1998-11-07T22:42:14+07:00", "utc": "1998-11-07T15:42:14Z", "ms": 910453334466.3201 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-11-06", "window": { "start": { "local": "1998-11-06T20:26:13+07:00", "utc": "1998-11-06T13:26:13Z", "ms": 910358773392.6344 }, "end": { "local": "1998-11-06T20:26:13+07:00", "utc": "1998-11-06T13:26:13Z", "ms": 910358773392.6344 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-11-07", "window": { "start": { "local": "1998-11-07T21:25:33+07:00", "utc": "1998-11-07T14:25:33Z", "ms": 910448733264.6001 }, "end": { "local": "1998-11-07T21:25:33+07:00", "utc": "1998-11-07T14:25:33Z", "ms": 910448733264.6001 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:25 on Sat 7 Nov to 22:42 on Sat 7 Nov.", "fact": "1998-11-06T18:24:40Z → 1998-11-07T15:42:14Z" }, { "step": "kaala", "text": "Moonrise is at 20:26 on the 6th and 21:26 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 4601 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Medan, 1998: Saturday 7 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": "1998-11-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-07", "confidence": "determinate" } ], "quote": "In Medan, Saṅkaṣṭa Caturthī 1998 falls on Saturday 7 November. Caturthī runs from 01:25 on Sat 7 Nov to 22:42 on Sat 7 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/sankashta-chaturthi?on=1998-11-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ekadashi?on=1998-11-14", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17365, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-11-13T23:03:20+07:00", "utc": "1998-11-13T16:03:20Z", "ms": 910973000127.2115 }, "end": { "local": "1998-11-15T01:21:52+07:00", "utc": "1998-11-14T18:21:52Z", "ms": 911067712281.0818 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-11-13T23:03:20+07:00", "utc": "1998-11-13T16:03:20Z", "ms": 910973000127.2115 }, "end": { "local": "1998-11-15T01:21:52+07:00", "utc": "1998-11-14T18:21:52Z", "ms": 911067712281.0818 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-11-14", "window": { "start": { "local": "1998-11-14T06:11:04+07:00", "utc": "1998-11-13T23:11:04Z", "ms": 910998663799.4689 }, "end": { "local": "1998-11-14T06:11:04+07:00", "utc": "1998-11-13T23:11:04Z", "ms": 910998663799.4689 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-11-15", "window": { "start": { "local": "1998-11-15T06:11:17+07:00", "utc": "1998-11-14T23:11:17Z", "ms": 911085077098.9489 }, "end": { "local": "1998-11-15T06:11:17+07:00", "utc": "1998-11-14T23:11:17Z", "ms": 911085077098.9489 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:03 on Fri 13 Nov to 01:22 on Sun 15 Nov.", "fact": "1998-11-13T16:03:20Z → 1998-11-14T18:21:52Z" }, { "step": "kaala", "text": "Sunrise is at 06:11 on the 14th and 06:11 on the 15th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 14th and is not on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17365 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Medan, 1998: Saturday 14 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": "1998-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-14", "confidence": "determinate" } ], "quote": "In Medan, Utpannā Ekādaśī 1998 falls on Saturday 14 November. Ekādaśī runs from 23:03 on Fri 13 Nov to 01:22 on Sun 15 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-11-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-11-16", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29344, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-11-16T03:53:53+07:00", "utc": "1998-11-15T20:53:53Z", "ms": 911163233077.5511 }, "end": { "local": "1998-11-17T06:29:49+07:00", "utc": "1998-11-16T23:29:49Z", "ms": 911258989470.1885 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-11-16T03:53:53+07:00", "utc": "1998-11-15T20:53:53Z", "ms": 911163233077.5511 }, "end": { "local": "1998-11-17T06:29:49+07:00", "utc": "1998-11-16T23:29:49Z", "ms": 911258989470.1885 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-11-15", "window": { "start": { "local": "1998-11-15T18:08:24+07:00", "utc": "1998-11-15T11:08:24Z", "ms": 911128104082.7452 }, "end": { "local": "1998-11-15T19:44:49+07:00", "utc": "1998-11-15T12:44:49Z", "ms": 911133889029.2711 } }, "covered_min": 0, "window_min": 96, "qualifies": false }, { "local_date": "1998-11-16", "window": { "start": { "local": "1998-11-16T18:08:31+07:00", "utc": "1998-11-16T11:08:31Z", "ms": 911214510694.6534 }, "end": { "local": "1998-11-16T19:44:57+07:00", "utc": "1998-11-16T12:44:57Z", "ms": 911220296740.6559 } }, "covered_min": 96, "window_min": 96, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:54 on Mon 16 Nov to 06:30 on Tue 17 Nov.", "fact": "1998-11-15T20:53:53Z → 1998-11-16T23:29:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:08–19:45 on the 15th, 18:09–19:45 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 96 minutes on the 15th and 96 of 96 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 29344 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Medan, 1998: Monday 16 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": "1998-11-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-16", "confidence": "determinate" } ], "quote": "In Medan, Kṛṣṇa Pradoṣa Vrata 1998 falls on Monday 16 November. Trayodaśī runs from 03:54 on Mon 16 Nov to 06:30 on Tue 17 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-11-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/shivaratri?on=1998-11-17", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21341, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-11-17T06:29:49+07:00", "utc": "1998-11-16T23:29:49Z", "ms": 911258989470.1885 }, "end": { "local": "1998-11-18T09:02:26+07:00", "utc": "1998-11-18T02:02:26Z", "ms": 911354546480.7443 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-11-17T06:29:49+07:00", "utc": "1998-11-16T23:29:49Z", "ms": 911258989470.1885 }, "end": { "local": "1998-11-18T09:02:26+07:00", "utc": "1998-11-18T02:02:26Z", "ms": 911354546480.7443 } }, "kaala": "nishita", "days": [ { "local_date": "1998-11-16", "window": { "start": { "local": "1998-11-16T23:46:08+07:00", "utc": "1998-11-16T16:46:08Z", "ms": 911234768367.1626 }, "end": { "local": "1998-11-17T00:34:08+07:00", "utc": "1998-11-16T17:34:08Z", "ms": 911237648367.1626 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-11-17", "window": { "start": { "local": "1998-11-17T23:46:20+07:00", "utc": "1998-11-17T16:46:20Z", "ms": 911321179948.66 }, "end": { "local": "1998-11-18T00:34:20+07:00", "utc": "1998-11-17T17:34:20Z", "ms": 911324059948.66 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 06:30 on Tue 17 Nov to 09:02 on Wed 18 Nov.", "fact": "1998-11-16T23:29:49Z → 1998-11-18T02:02:26Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:46–00:34 on the 16th, 23:46–00:34 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 21341 s" }, { "step": "ruling", "text": "Śivarātri, Medan, 1998: Tuesday 17 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": "1998-11-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-17", "confidence": "determinate" } ], "quote": "In Medan, Śivarātri 1998 falls on Tuesday 17 November. Caturdaśī runs from 06:30 on Tue 17 Nov to 09:02 on Wed 18 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/shivaratri?on=1998-11-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/vinayaka-chaturthi?on=1998-11-23", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17006, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-11-22T17:18:47+07:00", "utc": "1998-11-22T10:18:47Z", "ms": 911729926732.1896 }, "end": { "local": "1998-11-23T18:38:46+07:00", "utc": "1998-11-23T11:38:46Z", "ms": 911821126019.9854 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-11-22T17:18:47+07:00", "utc": "1998-11-22T10:18:47Z", "ms": 911729926732.1896 }, "end": { "local": "1998-11-23T18:38:46+07:00", "utc": "1998-11-23T11:38:46Z", "ms": 911821126019.9854 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-11-22", "window": { "start": { "local": "1998-11-22T11:47:21+07:00", "utc": "1998-11-22T04:47:21Z", "ms": 911710040581.5643 }, "end": { "local": "1998-11-22T12:35:21+07:00", "utc": "1998-11-22T05:35:21Z", "ms": 911712920581.5643 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-11-23", "window": { "start": { "local": "1998-11-23T11:47:37+07:00", "utc": "1998-11-23T04:47:37Z", "ms": 911796456679.8915 }, "end": { "local": "1998-11-23T12:35:37+07:00", "utc": "1998-11-23T05:35:37Z", "ms": 911799336679.8915 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:19 on Sun 22 Nov to 18:39 on Mon 23 Nov.", "fact": "1998-11-22T10:18:47Z → 1998-11-23T11:38:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 22nd, 11:48–12:36 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 17006 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Medan, 1998: Monday 23 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": "1998-11-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-23", "confidence": "determinate" } ], "quote": "In Medan, Vināyaka Caturthī 1998 falls on Monday 23 November. Caturthī runs from 17:19 on Sun 22 Nov to 18:39 on Mon 23 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/vinayaka-chaturthi?on=1998-11-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21789, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1998-11-23T18:38:46+07:00", "utc": "1998-11-23T11:38:46Z", "ms": 911821126019.9854 }, "end": { "local": "1998-11-24T19:32:59+07:00", "utc": "1998-11-24T12:32:59Z", "ms": 911910778502.6863 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-11-23T18:38:46+07:00", "utc": "1998-11-23T11:38:46Z", "ms": 911821126019.9854 }, "end": { "local": "1998-11-24T19:32:59+07:00", "utc": "1998-11-24T12:32:59Z", "ms": 911910778502.6863 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-11-23", "window": { "start": { "local": "1998-11-23T11:47:37+07:00", "utc": "1998-11-23T04:47:37Z", "ms": 911796456679.8915 }, "end": { "local": "1998-11-23T12:35:37+07:00", "utc": "1998-11-23T05:35:37Z", "ms": 911799336679.8915 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-11-24", "window": { "start": { "local": "1998-11-24T11:47:54+07:00", "utc": "1998-11-24T04:47:54Z", "ms": 911882873549.1709 }, "end": { "local": "1998-11-24T12:35:54+07:00", "utc": "1998-11-24T05:35:54Z", "ms": 911885753549.1709 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 18:39 on Mon 23 Nov to 19:33 on Tue 24 Nov.", "fact": "1998-11-23T11:38:46Z → 1998-11-24T12:32:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 23rd, 11:48–12:36 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21789 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Medan, 1998: Tuesday 24 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami-margashirsha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (2nd) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-11-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-24", "confidence": "determinate" } ], "quote": "In Medan, Nāga Pañcamī (Mārgaśīrṣa) 1998 falls on Tuesday 24 November. Pañcamī runs from 18:39 on Mon 23 Nov to 19:33 on Tue 24 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25025, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1998-11-24T19:32:59+07:00", "utc": "1998-11-24T12:32:59Z", "ms": 911910778502.6863 }, "end": { "local": "1998-11-25T19:56:10+07:00", "utc": "1998-11-25T12:56:10Z", "ms": 911998570473.8883 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-11-24T19:32:59+07:00", "utc": "1998-11-24T12:32:59Z", "ms": 911910778502.6863 }, "end": { "local": "1998-11-25T19:56:10+07:00", "utc": "1998-11-25T12:56:10Z", "ms": 911998570473.8883 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-11-24", "window": { "start": { "local": "1998-11-24T11:47:54+07:00", "utc": "1998-11-24T04:47:54Z", "ms": 911882873549.1709 }, "end": { "local": "1998-11-24T12:35:54+07:00", "utc": "1998-11-24T05:35:54Z", "ms": 911885753549.1709 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-11-25", "window": { "start": { "local": "1998-11-25T11:48:11+07:00", "utc": "1998-11-25T04:48:11Z", "ms": 911969291173.805 }, "end": { "local": "1998-11-25T12:36:11+07:00", "utc": "1998-11-25T05:36:11Z", "ms": 911972171173.805 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 19:33 on Tue 24 Nov to 19:56 on Wed 25 Nov.", "fact": "1998-11-24T12:32:59Z → 1998-11-25T12:56:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 24th, 11:48–12:36 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25025 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Medan, 1998: Wednesday 25 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "champa-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "not_evaluated": "The row calls the day special with Śatabhiṣaj nakṣatra, Vyatīpāta yoga and a Sunday; none is tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-11-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-25", "confidence": "determinate" } ], "quote": "In Medan, Campā Ṣaṣṭhī 1998 falls on Wednesday 25 November. Ṣaṣṭhī runs from 19:33 on Tue 24 Nov to 19:56 on Wed 25 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25025, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1998-11-24T19:32:59+07:00", "utc": "1998-11-24T12:32:59Z", "ms": 911910778502.6863 }, "end": { "local": "1998-11-25T19:56:10+07:00", "utc": "1998-11-25T12:56:10Z", "ms": 911998570473.8883 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-11-24T19:32:59+07:00", "utc": "1998-11-24T12:32:59Z", "ms": 911910778502.6863 }, "end": { "local": "1998-11-25T19:56:10+07:00", "utc": "1998-11-25T12:56:10Z", "ms": 911998570473.8883 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-11-24", "window": { "start": { "local": "1998-11-24T11:47:54+07:00", "utc": "1998-11-24T04:47:54Z", "ms": 911882873549.1709 }, "end": { "local": "1998-11-24T12:35:54+07:00", "utc": "1998-11-24T05:35:54Z", "ms": 911885753549.1709 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-11-25", "window": { "start": { "local": "1998-11-25T11:48:11+07:00", "utc": "1998-11-25T04:48:11Z", "ms": 911969291173.805 }, "end": { "local": "1998-11-25T12:36:11+07:00", "utc": "1998-11-25T05:36:11Z", "ms": 911972171173.805 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 19:33 on Tue 24 Nov to 19:56 on Wed 25 Nov.", "fact": "1998-11-24T12:32:59Z → 1998-11-25T12:56:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 24th, 11:48–12:36 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25025 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Medan, 1998: Wednesday 25 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-11-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-25", "confidence": "determinate" } ], "quote": "In Medan, Skanda Ṣaṣṭhī 1998 falls on Wednesday 25 November. Ṣaṣṭhī runs from 19:33 on Tue 24 Nov to 19:56 on Wed 25 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25621, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1998-11-25T19:56:10+07:00", "utc": "1998-11-25T12:56:10Z", "ms": 911998570473.8883 }, "end": { "local": "1998-11-26T19:43:31+07:00", "utc": "1998-11-26T12:43:31Z", "ms": 912084210826.9707 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-11-25T19:56:10+07:00", "utc": "1998-11-25T12:56:10Z", "ms": 911998570473.8883 }, "end": { "local": "1998-11-26T19:43:31+07:00", "utc": "1998-11-26T12:43:31Z", "ms": 912084210826.9707 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-11-25", "window": { "start": { "local": "1998-11-25T11:48:11+07:00", "utc": "1998-11-25T04:48:11Z", "ms": 911969291173.805 }, "end": { "local": "1998-11-25T12:36:11+07:00", "utc": "1998-11-25T05:36:11Z", "ms": 911972171173.805 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-11-26", "window": { "start": { "local": "1998-11-26T11:48:30+07:00", "utc": "1998-11-26T04:48:30Z", "ms": 912055709537.5435 }, "end": { "local": "1998-11-26T12:36:30+07:00", "utc": "1998-11-26T05:36:30Z", "ms": 912058589537.5435 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 19:56 on Wed 25 Nov to 19:44 on Thu 26 Nov.", "fact": "1998-11-25T12:56:10Z → 1998-11-26T12:43:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 25th, 11:48–12:36 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25621 s" }, { "step": "ruling", "text": "Mitra Saptamī, Medan, 1998: Thursday 26 November.", "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": "1998-11-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-26", "confidence": "determinate" } ], "quote": "In Medan, Mitra Saptamī 1998 falls on Thursday 26 November. Saptamī runs from 19:56 on Wed 25 Nov to 19:44 on Thu 26 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/ekadashi?on=1998-11-30", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21971, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-11-29T15:07:55+07:00", "utc": "1998-11-29T08:07:55Z", "ms": 912326874573.9204 }, "end": { "local": "1998-11-30T12:22:15+07:00", "utc": "1998-11-30T05:22:15Z", "ms": 912403335078.9733 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-11-29T15:07:55+07:00", "utc": "1998-11-29T08:07:55Z", "ms": 912326874573.9204 }, "end": { "local": "1998-11-30T12:22:15+07:00", "utc": "1998-11-30T05:22:15Z", "ms": 912403335078.9733 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-11-29", "window": { "start": { "local": "1998-11-29T06:15:40+07:00", "utc": "1998-11-28T23:15:40Z", "ms": 912294940144.4221 }, "end": { "local": "1998-11-29T06:15:40+07:00", "utc": "1998-11-28T23:15:40Z", "ms": 912294940144.4221 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1998-11-30", "window": { "start": { "local": "1998-11-30T06:16:04+07:00", "utc": "1998-11-29T23:16:04Z", "ms": 912381363805.1511 }, "end": { "local": "1998-11-30T06:16:04+07:00", "utc": "1998-11-29T23:16:04Z", "ms": 912381363805.1511 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:08 on Sun 29 Nov to 12:22 on Mon 30 Nov.", "fact": "1998-11-29T08:07:55Z → 1998-11-30T05:22:15Z" }, { "step": "kaala", "text": "Sunrise is at 06:16 on the 29th and 06:16 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 21971 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Medan, 1998: Monday 30 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": "1998-11-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-30", "confidence": "determinate" } ], "quote": "In Medan, Mokṣadā Ekādaśī 1998 falls on Monday 30 November. Ekādaśī runs from 15:08 on Sun 29 Nov to 12:22 on Mon 30 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-11-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-11-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 935, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1998-11-30T12:22:15+07:00", "utc": "1998-11-30T05:22:15Z", "ms": 912403335078.9733 }, "end": { "local": "1998-12-01T09:09:03+07:00", "utc": "1998-12-01T02:09:03Z", "ms": 912478143410.2207 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-11-30T12:22:15+07:00", "utc": "1998-11-30T05:22:15Z", "ms": 912403335078.9733 }, "end": { "local": "1998-12-01T09:09:03+07:00", "utc": "1998-12-01T02:09:03Z", "ms": 912478143410.2207 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-11-30", "window": { "start": { "local": "1998-11-30T11:49:50+07:00", "utc": "1998-11-30T04:49:50Z", "ms": 912401390046.6187 }, "end": { "local": "1998-11-30T12:37:50+07:00", "utc": "1998-11-30T05:37:50Z", "ms": 912404270046.6187 } }, "covered_min": 16, "window_min": 48, "qualifies": true }, { "local_date": "1998-12-01", "window": { "start": { "local": "1998-12-01T11:50:12+07:00", "utc": "1998-12-01T04:50:12Z", "ms": 912487811852.986 }, "end": { "local": "1998-12-01T12:38:12+07:00", "utc": "1998-12-01T05:38:12Z", "ms": 912490691852.986 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 12:22 on Mon 30 Nov to 09:09 on Tue 1 Dec.", "fact": "1998-11-30T05:22:15Z → 1998-12-01T02:09:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 30th, 11:50–12:38 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 16 of 48 minutes on the 30th and 0 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 935 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Medan, 1998: Monday 30 November.", "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": "1998-11-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-11-30", "confidence": "determinate" } ], "quote": "In Medan, Akhaṇḍa Dvādaśī 1998 falls on Monday 30 November. Dvādaśī runs from 12:22 on Mon 30 Nov to 09:09 on Tue 1 Dec and covers 16 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/pradosha-vrata?on=1998-12-01", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-12-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32572, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-12-01T09:09:03+07:00", "utc": "1998-12-01T02:09:03Z", "ms": 912478143410.2207 }, "end": { "local": "1998-12-02T05:37:10+07:00", "utc": "1998-12-01T22:37:10Z", "ms": 912551830216.0927 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-12-01T09:09:03+07:00", "utc": "1998-12-01T02:09:03Z", "ms": 912478143410.2207 }, "end": { "local": "1998-12-02T05:37:10+07:00", "utc": "1998-12-01T22:37:10Z", "ms": 912551830216.0927 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-12-01", "window": { "start": { "local": "1998-12-01T18:11:56+07:00", "utc": "1998-12-01T11:11:56Z", "ms": 912510715686.654 }, "end": { "local": "1998-12-01T19:48:35+07:00", "utc": "1998-12-01T12:48:35Z", "ms": 912516515297.5454 } }, "covered_min": 97, "window_min": 97, "qualifies": true }, { "local_date": "1998-12-02", "window": { "start": { "local": "1998-12-02T18:12:16+07:00", "utc": "1998-12-02T11:12:16Z", "ms": 912597135826.8013 }, "end": { "local": "1998-12-02T19:48:56+07:00", "utc": "1998-12-02T12:48:56Z", "ms": 912602936121.177 } }, "covered_min": 0, "window_min": 97, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 09:09 on Tue 1 Dec to 05:37 on Wed 2 Dec.", "fact": "1998-12-01T02:09:03Z → 1998-12-01T22:37:10Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:12–19:49 on the 1st, 18:12–19:49 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 97 of 97 minutes on the 1st and 0 of 97 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 32572 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Medan, 1998: Tuesday 1 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": "1998-12-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-12-01", "confidence": "determinate" } ], "quote": "In Medan, Śukla Pradoṣa Vrata 1998 falls on Tuesday 1 December. Trayodaśī runs from 09:09 on Tue 1 Dec to 05:37 on Wed 2 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-12-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-12-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8992, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1998-12-03T01:56:50+07:00", "utc": "1998-12-02T18:56:50Z", "ms": 912625010137.0607 }, "end": { "local": "1998-12-03T22:19:09+07:00", "utc": "1998-12-03T15:19:09Z", "ms": 912698349423.976 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-12-03T01:56:50+07:00", "utc": "1998-12-02T18:56:50Z", "ms": 912625010137.0607 }, "end": { "local": "1998-12-03T22:19:09+07:00", "utc": "1998-12-03T15:19:09Z", "ms": 912698349423.976 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-12-02", "window": { "start": { "local": "1998-12-02T18:12:16+07:00", "utc": "1998-12-02T11:12:16Z", "ms": 912597135826.8013 }, "end": { "local": "1998-12-02T19:48:56+07:00", "utc": "1998-12-02T12:48:56Z", "ms": 912602936121.177 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "1998-12-03", "window": { "start": { "local": "1998-12-03T18:12:37+07:00", "utc": "1998-12-03T11:12:37Z", "ms": 912683556693.836 }, "end": { "local": "1998-12-03T19:49:18+07:00", "utc": "1998-12-03T12:49:18Z", "ms": 912689357641.2924 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:57 on Thu 3 Dec to 22:19 on Thu 3 Dec.", "fact": "1998-12-02T18:56:50Z → 1998-12-03T15:19:09Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:12–19:49 on the 2nd, 18:13–19:49 on the 3rd.", "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 97 minutes on the 2nd and 97 of 97 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8992 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Medan, 1998: Thursday 3 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": "1998-12-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-12-03", "confidence": "determinate" } ], "quote": "In Medan, Dattātreyotpatti (Datta Jayanti) 1998 falls on Thursday 3 December. Pūrṇimā runs from 01:57 on Thu 3 Dec to 22:19 on Thu 3 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/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": "/medan/festivals/1998/sankashta-chaturthi?on=1998-12-06", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-12-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26999, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-12-06T13:34:48+07:00", "utc": "1998-12-06T06:34:48Z", "ms": 912926087519.9325 }, "end": { "local": "1998-12-07T11:56:37+07:00", "utc": "1998-12-07T04:56:37Z", "ms": 913006597223.2458 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-12-06T13:34:48+07:00", "utc": "1998-12-06T06:34:48Z", "ms": 912926087519.9325 }, "end": { "local": "1998-12-07T11:56:37+07:00", "utc": "1998-12-07T04:56:37Z", "ms": 913006597223.2458 } }, "kaala": "moonrise", "days": [ { "local_date": "1998-12-06", "window": { "start": { "local": "1998-12-06T21:04:47+07:00", "utc": "1998-12-06T14:04:47Z", "ms": 912953086754.3323 }, "end": { "local": "1998-12-06T21:04:47+07:00", "utc": "1998-12-06T14:04:47Z", "ms": 912953086754.3323 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-12-07", "window": { "start": { "local": "1998-12-07T22:00:34+07:00", "utc": "1998-12-07T15:00:34Z", "ms": 913042833704.3263 }, "end": { "local": "1998-12-07T22:00:34+07:00", "utc": "1998-12-07T15:00:34Z", "ms": 913042833704.3263 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:35 on Sun 6 Dec to 11:57 on Mon 7 Dec.", "fact": "1998-12-06T06:34:48Z → 1998-12-07T04:56:37Z" }, { "step": "kaala", "text": "Moonrise is at 21:05 on the 6th and 22:01 on the 7th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 6th and is not 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 26999 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Medan, 1998: Sunday 6 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": "1998-12-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-12-06", "confidence": "determinate" } ], "quote": "In Medan, Saṅkaṣṭa Caturthī 1998 falls on Sunday 6 December. Caturthī runs from 13:35 on Sun 6 Dec to 11:57 on Mon 7 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/sankashta-chaturthi?on=1998-12-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ekadashi?on=1998-12-14", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-12-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33264, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-12-13T18:30:42+07:00", "utc": "1998-12-13T11:30:42Z", "ms": 913548641731.5673 }, "end": { "local": "1998-12-14T21:08:29+07:00", "utc": "1998-12-14T14:08:29Z", "ms": 913644509107.5968 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-12-13T18:30:42+07:00", "utc": "1998-12-13T11:30:42Z", "ms": 913548641731.5673 }, "end": { "local": "1998-12-14T21:08:29+07:00", "utc": "1998-12-14T14:08:29Z", "ms": 913644509107.5968 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-12-14", "window": { "start": { "local": "1998-12-14T06:22:24+07:00", "utc": "1998-12-13T23:22:24Z", "ms": 913591343835.9772 }, "end": { "local": "1998-12-14T06:22:24+07:00", "utc": "1998-12-13T23:22:24Z", "ms": 913591343835.9772 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-12-15", "window": { "start": { "local": "1998-12-15T06:22:53+07:00", "utc": "1998-12-14T23:22:53Z", "ms": 913677773455.606 }, "end": { "local": "1998-12-15T06:22:53+07:00", "utc": "1998-12-14T23:22:53Z", "ms": 913677773455.606 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:31 on Sun 13 Dec to 21:08 on Mon 14 Dec.", "fact": "1998-12-13T11:30:42Z → 1998-12-14T14:08:29Z" }, { "step": "kaala", "text": "Sunrise is at 06:22 on the 14th and 06:23 on the 15th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 14th and is not on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33264 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Medan, 1998: Monday 14 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": "1998-12-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-12-14", "confidence": "determinate" } ], "quote": "In Medan, Saphalā Ekādaśī 1998 falls on Monday 14 December. Ekādaśī runs from 18:31 on Sun 13 Dec to 21:08 on Mon 14 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-12-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-12-16", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-12-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13622, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-12-15T23:41:25+07:00", "utc": "1998-12-15T16:41:25Z", "ms": 913740084621.0309 }, "end": { "local": "1998-12-17T02:01:04+07:00", "utc": "1998-12-16T19:01:04Z", "ms": 913834864399.0548 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-12-15T23:41:25+07:00", "utc": "1998-12-15T16:41:25Z", "ms": 913740084621.0309 }, "end": { "local": "1998-12-17T02:01:04+07:00", "utc": "1998-12-16T19:01:04Z", "ms": 913834864399.0548 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-12-15", "window": { "start": { "local": "1998-12-15T18:17:36+07:00", "utc": "1998-12-15T11:17:36Z", "ms": 913720656476.0977 }, "end": { "local": "1998-12-15T19:54:23+07:00", "utc": "1998-12-15T12:54:23Z", "ms": 913726462711.0284 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "1998-12-16", "window": { "start": { "local": "1998-12-16T18:18:05+07:00", "utc": "1998-12-16T11:18:05Z", "ms": 913807084770.1566 }, "end": { "local": "1998-12-16T19:54:51+07:00", "utc": "1998-12-16T12:54:51Z", "ms": 913812891220.4418 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:41 on Tue 15 Dec to 02:01 on Thu 17 Dec.", "fact": "1998-12-15T16:41:25Z → 1998-12-16T19:01:04Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:18–19:54 on the 15th, 18:18–19:55 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 97 minutes on the 15th and 97 of 97 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13622 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Medan, 1998: Wednesday 16 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": "1998-12-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-12-16", "confidence": "determinate" } ], "quote": "In Medan, Kṛṣṇa Pradoṣa Vrata 1998 falls on Wednesday 16 December. Trayodaśī runs from 23:41 on Tue 15 Dec to 02:01 on Thu 17 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-12-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/shivaratri?on=1998-12-17", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-12-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4565, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1998-12-17T02:01:04+07:00", "utc": "1998-12-16T19:01:04Z", "ms": 913834864399.0548 }, "end": { "local": "1998-12-18T04:02:15+07:00", "utc": "1998-12-17T21:02:15Z", "ms": 913928535190.6168 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-12-17T02:01:04+07:00", "utc": "1998-12-16T19:01:04Z", "ms": 913834864399.0548 }, "end": { "local": "1998-12-18T04:02:15+07:00", "utc": "1998-12-17T21:02:15Z", "ms": 913928535190.6168 } }, "kaala": "nishita", "days": [ { "local_date": "1998-12-16", "window": { "start": { "local": "1998-12-16T23:56:59+07:00", "utc": "1998-12-16T16:56:59Z", "ms": 913827418958.7258 }, "end": { "local": "1998-12-17T00:44:59+07:00", "utc": "1998-12-16T17:44:59Z", "ms": 913830298958.7258 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1998-12-17", "window": { "start": { "local": "1998-12-17T23:57:28+07:00", "utc": "1998-12-17T16:57:28Z", "ms": 913913848285.6633 }, "end": { "local": "1998-12-18T00:45:28+07:00", "utc": "1998-12-17T17:45:28Z", "ms": 913916728285.6633 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:01 on Thu 17 Dec to 04:02 on Fri 18 Dec.", "fact": "1998-12-16T19:01:04Z → 1998-12-17T21:02:15Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:57–00:45 on the 16th, 23:57–00:45 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 4565 s" }, { "step": "ruling", "text": "Śivarātri, Medan, 1998: Thursday 17 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1998-12-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-12-17", "confidence": "determinate" } ], "quote": "In Medan, Śivarātri 1998 falls on Thursday 17 December. Caturdaśī runs from 02:01 on Thu 17 Dec to 04:02 on Fri 18 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/medan/festivals/1998/shivaratri?on=1998-12-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/vinayaka-chaturthi?on=1998-12-22", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-12-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12054, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1998-12-22T08:29:35+07:00", "utc": "1998-12-22T01:29:35Z", "ms": 914290174516.5593 }, "end": { "local": "1998-12-23T08:39:18+07:00", "utc": "1998-12-23T01:39:18Z", "ms": 914377157980.4801 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-12-22T08:29:35+07:00", "utc": "1998-12-22T01:29:35Z", "ms": 914290174516.5593 }, "end": { "local": "1998-12-23T08:39:18+07:00", "utc": "1998-12-23T01:39:18Z", "ms": 914377157980.4801 } }, "kaala": "madhyahna", "days": [ { "local_date": "1998-12-22", "window": { "start": { "local": "1998-12-22T11:59:42+07:00", "utc": "1998-12-22T04:59:42Z", "ms": 914302782052.3489 }, "end": { "local": "1998-12-22T12:47:42+07:00", "utc": "1998-12-22T05:47:42Z", "ms": 914305662052.3489 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1998-12-23", "window": { "start": { "local": "1998-12-23T12:00:12+07:00", "utc": "1998-12-23T05:00:12Z", "ms": 914389212010.398 }, "end": { "local": "1998-12-23T12:48:12+07:00", "utc": "1998-12-23T05:48:12Z", "ms": 914392092010.398 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:30 on Tue 22 Dec to 08:39 on Wed 23 Dec.", "fact": "1998-12-22T01:29:35Z → 1998-12-23T01:39:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 22nd, 12:00–12:48 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 12054 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Medan, 1998: Tuesday 22 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": "1998-12-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-12-22", "confidence": "determinate" } ], "quote": "In Medan, Vināyaka Caturthī 1998 falls on Tuesday 22 December. Caturthī runs from 08:30 on Tue 22 Dec to 08:39 on Wed 23 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/medan/festivals/1998/vinayaka-chaturthi?on=1998-12-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/ekadashi?on=1998-12-29", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-12-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22277, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1998-12-29T00:18:32+07:00", "utc": "1998-12-28T17:18:32Z", "ms": 914865511600.976 }, "end": { "local": "1998-12-29T21:30:45+07:00", "utc": "1998-12-29T14:30:45Z", "ms": 914941845028.0925 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-12-29T00:18:32+07:00", "utc": "1998-12-28T17:18:32Z", "ms": 914865511600.976 }, "end": { "local": "1998-12-29T21:30:45+07:00", "utc": "1998-12-29T14:30:45Z", "ms": 914941845028.0925 } }, "kaala": "sunrise", "days": [ { "local_date": "1998-12-29", "window": { "start": { "local": "1998-12-29T06:29:48+07:00", "utc": "1998-12-28T23:29:48Z", "ms": 914887788220.0841 }, "end": { "local": "1998-12-29T06:29:48+07:00", "utc": "1998-12-28T23:29:48Z", "ms": 914887788220.0841 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1998-12-30", "window": { "start": { "local": "1998-12-30T06:30:16+07:00", "utc": "1998-12-29T23:30:16Z", "ms": 914974216377.266 }, "end": { "local": "1998-12-30T06:30:16+07:00", "utc": "1998-12-29T23:30:16Z", "ms": 914974216377.266 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:19 on Tue 29 Dec to 21:31 on Tue 29 Dec.", "fact": "1998-12-28T17:18:32Z → 1998-12-29T14:30:45Z" }, { "step": "kaala", "text": "Sunrise is at 06:30 on the 29th and 06:30 on the 30th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 29th and is not on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22277 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Medan, 1998: Tuesday 29 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": "1998-12-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-12-29", "confidence": "determinate" } ], "quote": "In Medan, Putradā Ekādaśī 1998 falls on Tuesday 29 December. Ekādaśī runs from 00:19 on Tue 29 Dec to 21:31 on Tue 29 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/medan/festivals/1998/ekadashi?on=1998-12-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/medan/festivals/1998/pradosha-vrata?on=1998-12-30", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1214520", "year": 1998, "local_date": "1998-12-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 377, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1998-12-30T18:31:18+07:00", "utc": "1998-12-30T11:31:18Z", "ms": 915017478410.9031 }, "end": { "local": "1998-12-31T15:28:26+07:00", "utc": "1998-12-31T08:28:26Z", "ms": 915092906091.6268 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1998-12-30T18:31:18+07:00", "utc": "1998-12-30T11:31:18Z", "ms": 915017478410.9031 }, "end": { "local": "1998-12-31T15:28:26+07:00", "utc": "1998-12-31T08:28:26Z", "ms": 915092906091.6268 } }, "kaala": "pradosha", "days": [ { "local_date": "1998-12-30", "window": { "start": { "local": "1998-12-30T18:25:02+07:00", "utc": "1998-12-30T11:25:02Z", "ms": 915017101872.4766 }, "end": { "local": "1998-12-30T20:01:48+07:00", "utc": "1998-12-30T13:01:48Z", "ms": 915022907511.009 } }, "covered_min": 90, "window_min": 97, "qualifies": true }, { "local_date": "1998-12-31", "window": { "start": { "local": "1998-12-31T18:25:32+07:00", "utc": "1998-12-31T11:25:32Z", "ms": 915103531719.1781 }, "end": { "local": "1998-12-31T20:02:17+07:00", "utc": "1998-12-31T13:02:17Z", "ms": 915109337029.3889 } }, "covered_min": 0, "window_min": 97, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:31 on Wed 30 Dec to 15:28 on Thu 31 Dec.", "fact": "1998-12-30T11:31:18Z → 1998-12-31T08:28:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:25–20:02 on the 30th, 18:26–20:02 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 90 of 97 minutes on the 30th and 0 of 97 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 377 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Medan, 1998: Wednesday 30 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": "1998-12-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1998-12-30", "confidence": "determinate" } ], "quote": "In Medan, Śukla Pradoṣa Vrata 1998 falls on Wednesday 30 December. Trayodaśī runs from 18:31 on Wed 30 Dec to 15:28 on Thu 31 Dec and covers 90 of 97 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/medan/festivals/1998/pradosha-vrata?on=1998-12-30", "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" } }