{ "id": "/budapest/festivals/1900", "place": { "id": "3054643", "slug": "budapest", "name": "Budapest", "region": "Hungary", "country": "HU", "lat": 47.49835, "lon": 19.04045, "elevation_m": 104, "tz": "Europe/Budapest" }, "year": 1900, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/budapest/festivals/1900/vinayaka-chaturthi?on=1900-01-04", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-01-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19661, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-01-04T05:57:18+01:00", "utc": "1900-01-04T04:57:18Z", "ms": -2208711761934.0454 }, "end": { "local": "1900-01-05T02:55:46+01:00", "utc": "1900-01-05T01:55:46Z", "ms": -2208636253612.5674 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-01-04T05:57:18+01:00", "utc": "1900-01-04T04:57:18Z", "ms": -2208711761934.0454 }, "end": { "local": "1900-01-05T02:55:46+01:00", "utc": "1900-01-05T01:55:46Z", "ms": -2208636253612.5674 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-01-04", "window": { "start": { "local": "1900-01-04T11:24:59+01:00", "utc": "1900-01-04T10:24:59Z", "ms": -2208692100628.927 }, "end": { "local": "1900-01-04T12:12:59+01:00", "utc": "1900-01-04T11:12:59Z", "ms": -2208689220628.927 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-01-05", "window": { "start": { "local": "1900-01-05T11:25:27+01:00", "utc": "1900-01-05T10:25:27Z", "ms": -2208605672957.7 }, "end": { "local": "1900-01-05T12:13:27+01:00", "utc": "1900-01-05T11:13:27Z", "ms": -2208602792957.7 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:57 on Thu 4 Jan to 02:56 on Fri 5 Jan.", "fact": "1900-01-04T04:57:18Z → 1900-01-05T01:55:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 4th, 11:25–12:13 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 4th and 0 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19661 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Budapest, 1900: Thursday 4 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": "1900-01-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-01-04", "confidence": "determinate" } ], "quote": "In Budapest, Vināyaka Caturthī 1900 falls on Thursday 4 January. Caturthī runs from 05:57 on Thu 4 Jan to 02:56 on Fri 5 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/vinayaka-chaturthi?on=1900-01-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/ekadashi?on=1900-01-11", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-01-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31141, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-01-10T16:14:26+01:00", "utc": "1900-01-10T15:14:26Z", "ms": -2208156333865.367 }, "end": { "local": "1900-01-11T16:09:13+01:00", "utc": "1900-01-11T15:09:13Z", "ms": -2208070247338.9404 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-01-10T16:14:26+01:00", "utc": "1900-01-10T15:14:26Z", "ms": -2208156333865.367 }, "end": { "local": "1900-01-11T16:09:13+01:00", "utc": "1900-01-11T15:09:13Z", "ms": -2208070247338.9404 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-01-10", "window": { "start": { "local": "1900-01-10T07:30:38+01:00", "utc": "1900-01-10T06:30:38Z", "ms": -2208187762160.5894 }, "end": { "local": "1900-01-10T07:30:38+01:00", "utc": "1900-01-10T06:30:38Z", "ms": -2208187762160.5894 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-01-11", "window": { "start": { "local": "1900-01-11T07:30:12+01:00", "utc": "1900-01-11T06:30:12Z", "ms": -2208101387994.856 }, "end": { "local": "1900-01-11T07:30:12+01:00", "utc": "1900-01-11T06:30:12Z", "ms": -2208101387994.856 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:14 on Wed 10 Jan to 16:09 on Thu 11 Jan.", "fact": "1900-01-10T15:14:26Z → 1900-01-11T15:09:13Z" }, { "step": "kaala", "text": "Sunrise is at 07:31 on the 10th and 07:30 on the 11th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 10th and is on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31141 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Budapest, 1900: Thursday 11 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": "1900-01-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-01-11", "confidence": "determinate" } ], "quote": "In Budapest, Putradā Ekādaśī 1900 falls on Thursday 11 January. Ekādaśī runs from 16:14 on Wed 10 Jan to 16:09 on Thu 11 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-01-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-01-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38344, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1900-01-13T02:54:13+01:00", "utc": "1900-01-13T01:54:13Z", "ms": -2207945147030.8813 }, "end": { "local": "1900-02-11T15:52:53+01:00", "utc": "1900-02-11T14:52:53Z", "ms": -2205392827451.3896 } }, "span": { "of": "transit", "start": { "local": "1900-01-13T02:54:13+01:00", "utc": "1900-01-13T01:54:13Z", "ms": -2207945147030.8813 }, "end": { "local": "1900-01-13T02:54:13+01:00", "utc": "1900-01-13T01:54:13Z", "ms": -2207945147030.8813 } }, "kaala": "sunset-day", "days": [ { "local_date": "1900-01-12", "window": { "start": { "local": "1900-01-11T16:13:53+01:00", "utc": "1900-01-11T15:13:53Z", "ms": -2208069967188.8643 }, "end": { "local": "1900-01-12T16:15:09+01:00", "utc": "1900-01-12T15:15:09Z", "ms": -2207983490832.53 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1900-01-13", "window": { "start": { "local": "1900-01-12T16:15:09+01:00", "utc": "1900-01-12T15:15:09Z", "ms": -2207983490832.53 }, "end": { "local": "1900-01-13T16:16:27+01:00", "utc": "1900-01-13T15:16:27Z", "ms": -2207897013012.4556 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1900-01-13", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 02:54 on Sat 13 Jan.", "fact": "1900-01-13T01:54:13Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 12th ends at 16:15, and the day of the 13th ends at 16:16.", "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 12th and 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 sunset → only-day · margin 38344 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Saturday 13 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Budapest, 1900: Friday 12 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": "1900-01-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-01-12", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1900-01-12", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1900-01-11", "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 Budapest, Bhogi 1900 falls on Friday 12 January. It is kept the day before Pongal, which falls on Saturday 13 January. The Sun enters Makara at 02:54 on Sat 13 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 12th and the 13th. Counted from sunrise, as in Orissa, it is 11 January.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/pradosha-vrata?on=1900-01-12", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-01-12", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1008, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-01-12T16:31:58+01:00", "utc": "1900-01-12T15:31:58Z", "ms": -2207982482406.793 }, "end": { "local": "1900-01-13T17:20:34+01:00", "utc": "1900-01-13T16:20:34Z", "ms": -2207893165946.083 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-01-12T16:31:58+01:00", "utc": "1900-01-12T15:31:58Z", "ms": -2207982482406.793 }, "end": { "local": "1900-01-13T17:20:34+01:00", "utc": "1900-01-13T16:20:34Z", "ms": -2207893165946.083 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-01-12", "window": { "start": { "local": "1900-01-12T16:15:09+01:00", "utc": "1900-01-12T15:15:09Z", "ms": -2207983490832.53 }, "end": { "local": "1900-01-12T18:17:02+01:00", "utc": "1900-01-12T17:17:02Z", "ms": -2207976178441.0815 } }, "covered_min": 105, "window_min": 122, "qualifies": true }, { "local_date": "1900-01-13", "window": { "start": { "local": "1900-01-13T16:16:27+01:00", "utc": "1900-01-13T15:16:27Z", "ms": -2207897013012.4556 }, "end": { "local": "1900-01-13T18:18:04+01:00", "utc": "1900-01-13T17:18:04Z", "ms": -2207889715531.1255 } }, "covered_min": 64, "window_min": 122, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 16:32 on Fri 12 Jan to 17:21 on Sat 13 Jan.", "fact": "1900-01-12T15:31:58Z → 1900-01-13T16:20:34Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:15–18:17 on the 12th, 16:16–18:18 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 105 of 122 minutes on the 12th and 64 of 122 on the 13th.", "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 1008 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Budapest, 1900: Friday 12 January.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-01-12", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-01-12", "confidence": "boundary" } ], "quote": "In Budapest, Śukla Pradoṣa Vrata 1900 falls on Friday 12 January. Trayodaśī runs from 16:32 on Fri 12 Jan to 17:21 on Sat 13 Jan and covers 105 of 122 minutes of pradoṣa that evening. It also reaches the next evening for 64 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/budapest/festivals/1900/pradosha-vrata?on=1900-01-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38344, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1900-01-13T02:54:13+01:00", "utc": "1900-01-13T01:54:13Z", "ms": -2207945147030.8813 }, "end": { "local": "1900-02-11T15:52:53+01:00", "utc": "1900-02-11T14:52:53Z", "ms": -2205392827451.3896 } }, "span": { "of": "transit", "start": { "local": "1900-01-13T02:54:13+01:00", "utc": "1900-01-13T01:54:13Z", "ms": -2207945147030.8813 }, "end": { "local": "1900-01-13T02:54:13+01:00", "utc": "1900-01-13T01:54:13Z", "ms": -2207945147030.8813 } }, "kaala": "sunset-day", "days": [ { "local_date": "1900-01-12", "window": { "start": { "local": "1900-01-11T16:13:53+01:00", "utc": "1900-01-11T15:13:53Z", "ms": -2208069967188.8643 }, "end": { "local": "1900-01-12T16:15:09+01:00", "utc": "1900-01-12T15:15:09Z", "ms": -2207983490832.53 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1900-01-13", "window": { "start": { "local": "1900-01-12T16:15:09+01:00", "utc": "1900-01-12T15:15:09Z", "ms": -2207983490832.53 }, "end": { "local": "1900-01-13T16:16:27+01:00", "utc": "1900-01-13T15:16:27Z", "ms": -2207897013012.4556 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 02:54 on Sat 13 Jan.", "fact": "1900-01-13T01:54:13Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 12th ends at 16:15, and the day of the 13th ends at 16:16.", "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 12th and 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 sunset → only-day · margin 38344 s" }, { "step": "ruling", "text": "Pongal, Budapest, 1900: Saturday 13 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": "1900-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1900-01-13", "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": "1900-01-12", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Budapest, Pongal 1900 falls on Saturday 13 January. The Sun enters Makara at 02:54 on Sat 13 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 12th and the 13th. Counted from sunrise, as in Orissa, it is 12 January.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10453, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1900-01-13T02:54:13+01:00", "utc": "1900-01-13T01:54:13Z", "ms": -2207945147030.8813 }, "end": { "local": "1900-02-11T15:52:53+01:00", "utc": "1900-02-11T14:52:53Z", "ms": -2205392827451.3896 } }, "span": { "of": "transit", "start": { "local": "1900-01-13T02:54:13+01:00", "utc": "1900-01-13T01:54:13Z", "ms": -2207945147030.8813 }, "end": { "local": "1900-01-13T02:54:13+01:00", "utc": "1900-01-13T01:54:13Z", "ms": -2207945147030.8813 } }, "kaala": "civil-day", "days": [ { "local_date": "1900-01-12", "window": { "start": { "local": "1900-01-12T00:00:00+01:00", "utc": "1900-01-11T23:00:00Z", "ms": -2208042000000 }, "end": { "local": "1900-01-13T00:00:00+01:00", "utc": "1900-01-12T23:00:00Z", "ms": -2207955600000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1900-01-13", "window": { "start": { "local": "1900-01-13T00:00:00+01:00", "utc": "1900-01-12T23:00:00Z", "ms": -2207955600000 }, "end": { "local": "1900-01-14T00:00:00+01:00", "utc": "1900-01-13T23:00:00Z", "ms": -2207869200000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 02:54 on Sat 13 Jan.", "fact": "1900-01-13T01:54:13Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Budapest.", "fact": "civil-day: midnight-to-midnight · Europe/Budapest" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from midnight. The transit falls on the 13th, not the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from midnight → only-day · margin 10453 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Budapest, 1900: Saturday 13 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "makara-sankranti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "rashi": "Makara", "day_from": "midnight" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1900-01-12", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "1900-01-13", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Budapest, Makara Saṅkrānti 1900 falls on Saturday 13 January. The Sun enters Makara at 02:54 on Sat 13 Jan, and the rule counts the day from midnight. Counted from sunrise, as in Orissa, it is 12 January.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38344, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1900-01-13T02:54:13+01:00", "utc": "1900-01-13T01:54:13Z", "ms": -2207945147030.8813 }, "end": { "local": "1900-02-11T15:52:53+01:00", "utc": "1900-02-11T14:52:53Z", "ms": -2205392827451.3896 } }, "span": { "of": "transit", "start": { "local": "1900-01-13T02:54:13+01:00", "utc": "1900-01-13T01:54:13Z", "ms": -2207945147030.8813 }, "end": { "local": "1900-01-13T02:54:13+01:00", "utc": "1900-01-13T01:54:13Z", "ms": -2207945147030.8813 } }, "kaala": "sunset-day", "days": [ { "local_date": "1900-01-12", "window": { "start": { "local": "1900-01-11T16:13:53+01:00", "utc": "1900-01-11T15:13:53Z", "ms": -2208069967188.8643 }, "end": { "local": "1900-01-12T16:15:09+01:00", "utc": "1900-01-12T15:15:09Z", "ms": -2207983490832.53 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1900-01-13", "window": { "start": { "local": "1900-01-12T16:15:09+01:00", "utc": "1900-01-12T15:15:09Z", "ms": -2207983490832.53 }, "end": { "local": "1900-01-13T16:16:27+01:00", "utc": "1900-01-13T15:16:27Z", "ms": -2207897013012.4556 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1900-01-13", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 02:54 on Sat 13 Jan.", "fact": "1900-01-13T01:54:13Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 12th ends at 16:15, and the day of the 13th ends at 16:16.", "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 12th and 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 sunset → only-day · margin 38344 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Saturday 13 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Budapest, 1900: Sunday 14 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": "1900-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1900-01-14", "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": "1900-01-13", "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 Budapest, Mattu Pongal 1900 falls on Sunday 14 January. It is kept the day after Pongal, which falls on Saturday 13 January. The Sun enters Makara at 02:54 on Sat 13 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 12th and the 13th. Counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/sankashta-chaturthi?on=1900-01-19", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-01-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25682, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-01-19T02:39:56+01:00", "utc": "1900-01-19T01:39:56Z", "ms": -2207427603652.2983 }, "end": { "local": "1900-01-20T05:13:21+01:00", "utc": "1900-01-20T04:13:21Z", "ms": -2207331998754.548 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-01-19T02:39:56+01:00", "utc": "1900-01-19T01:39:56Z", "ms": -2207427603652.2983 }, "end": { "local": "1900-01-20T05:13:21+01:00", "utc": "1900-01-20T04:13:21Z", "ms": -2207331998754.548 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-01-18", "window": { "start": { "local": "1900-01-18T19:31:54+01:00", "utc": "1900-01-18T18:31:54Z", "ms": -2207453286101.6714 }, "end": { "local": "1900-01-18T19:31:54+01:00", "utc": "1900-01-18T18:31:54Z", "ms": -2207453286101.6714 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-01-19", "window": { "start": { "local": "1900-01-19T20:34:23+01:00", "utc": "1900-01-19T19:34:23Z", "ms": -2207363136783.6943 }, "end": { "local": "1900-01-19T20:34:23+01:00", "utc": "1900-01-19T19:34:23Z", "ms": -2207363136783.6943 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:40 on Fri 19 Jan to 05:13 on Sat 20 Jan.", "fact": "1900-01-19T01:39:56Z → 1900-01-20T04:13:21Z" }, { "step": "kaala", "text": "Moonrise is at 19:32 on the 18th and 20:34 on the 19th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 18th and is on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25682 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Budapest, 1900: Friday 19 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": "1900-01-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-01-19", "confidence": "determinate" } ], "quote": "In Budapest, Saṅkaṣṭa Caturthī 1900 falls on Friday 19 January. Caturthī runs from 02:40 on Fri 19 Jan to 05:13 on Sat 20 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/sankashta-chaturthi?on=1900-01-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/ekadashi?on=1900-01-27", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-01-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20877, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-01-26T14:03:28+01:00", "utc": "1900-01-26T13:03:28Z", "ms": -2206781791568.367 }, "end": { "local": "1900-01-27T13:05:25+01:00", "utc": "1900-01-27T12:05:25Z", "ms": -2206698874868.3076 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-01-26T14:03:28+01:00", "utc": "1900-01-26T13:03:28Z", "ms": -2206781791568.367 }, "end": { "local": "1900-01-27T13:05:25+01:00", "utc": "1900-01-27T12:05:25Z", "ms": -2206698874868.3076 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-01-26", "window": { "start": { "local": "1900-01-26T07:18:33+01:00", "utc": "1900-01-26T06:18:33Z", "ms": -2206806086524.3765 }, "end": { "local": "1900-01-26T07:18:33+01:00", "utc": "1900-01-26T06:18:33Z", "ms": -2206806086524.3765 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-01-27", "window": { "start": { "local": "1900-01-27T07:17:28+01:00", "utc": "1900-01-27T06:17:28Z", "ms": -2206719752044.9224 }, "end": { "local": "1900-01-27T07:17:28+01:00", "utc": "1900-01-27T06:17:28Z", "ms": -2206719752044.9224 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:03 on Fri 26 Jan to 13:05 on Sat 27 Jan.", "fact": "1900-01-26T13:03:28Z → 1900-01-27T12:05:25Z" }, { "step": "kaala", "text": "Sunrise is at 07:19 on the 26th and 07:17 on the 27th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 26th and is on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20877 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Budapest, 1900: Saturday 27 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": "1900-01-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-01-27", "confidence": "determinate" } ], "quote": "In Budapest, Ṣaṭtilā Ekādaśī 1900 falls on Saturday 27 January. Ekādaśī runs from 14:03 on Fri 26 Jan to 13:05 on Sat 27 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-01-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-01-28", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19120, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-01-28T11:19:26+01:00", "utc": "1900-01-28T10:19:26Z", "ms": -2206618833694.982 }, "end": { "local": "1900-01-29T08:51:15+01:00", "utc": "1900-01-29T07:51:15Z", "ms": -2206541325253.5986 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-01-28T11:19:26+01:00", "utc": "1900-01-28T10:19:26Z", "ms": -2206618833694.982 }, "end": { "local": "1900-01-29T08:51:15+01:00", "utc": "1900-01-29T07:51:15Z", "ms": -2206541325253.5986 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-01-28", "window": { "start": { "local": "1900-01-28T16:38:06+01:00", "utc": "1900-01-28T15:38:06Z", "ms": -2206599714177.567 }, "end": { "local": "1900-01-28T18:35:02+01:00", "utc": "1900-01-28T17:35:02Z", "ms": -2206592697542.6704 } }, "covered_min": 117, "window_min": 117, "qualifies": true }, { "local_date": "1900-01-29", "window": { "start": { "local": "1900-01-29T16:39:38+01:00", "utc": "1900-01-29T15:39:38Z", "ms": -2206513221642.3887 }, "end": { "local": "1900-01-29T18:36:13+01:00", "utc": "1900-01-29T17:36:13Z", "ms": -2206506226913.852 } }, "covered_min": 0, "window_min": 117, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:19 on Sun 28 Jan to 08:51 on Mon 29 Jan.", "fact": "1900-01-28T10:19:26Z → 1900-01-29T07:51:15Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:38–18:35 on the 28th, 16:40–18:36 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 117 of 117 minutes on the 28th and 0 of 117 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19120 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Budapest, 1900: Sunday 28 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": "1900-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-01-28", "confidence": "determinate" } ], "quote": "In Budapest, Kṛṣṇa Pradoṣa Vrata 1900 falls on Sunday 28 January. Trayodaśī runs from 11:19 on Sun 28 Jan to 08:51 on Mon 29 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-01-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/shivaratri?on=1900-01-29", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-01-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19693, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-01-29T08:51:15+01:00", "utc": "1900-01-29T07:51:15Z", "ms": -2206541325253.5986 }, "end": { "local": "1900-01-30T05:49:02+01:00", "utc": "1900-01-30T04:49:02Z", "ms": -2206465858139.2197 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-01-29T08:51:15+01:00", "utc": "1900-01-29T07:51:15Z", "ms": -2206541325253.5986 }, "end": { "local": "1900-01-30T05:49:02+01:00", "utc": "1900-01-30T04:49:02Z", "ms": -2206465858139.2197 } }, "kaala": "nishita", "days": [ { "local_date": "1900-01-28", "window": { "start": { "local": "1900-01-28T23:32:38+01:00", "utc": "1900-01-28T22:32:38Z", "ms": -2206574841796.706 }, "end": { "local": "1900-01-29T00:20:38+01:00", "utc": "1900-01-28T23:20:38Z", "ms": -2206571961796.706 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-01-29", "window": { "start": { "local": "1900-01-29T23:32:49+01:00", "utc": "1900-01-29T22:32:49Z", "ms": -2206488431410.377 }, "end": { "local": "1900-01-30T00:20:49+01:00", "utc": "1900-01-29T23:20:49Z", "ms": -2206485551410.377 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:51 on Mon 29 Jan to 05:49 on Tue 30 Jan.", "fact": "1900-01-29T07:51:15Z → 1900-01-30T04:49:02Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:33–00:21 on the 28th, 23:33–00:21 on the 29th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19693 s" }, { "step": "ruling", "text": "Śivarātri, Budapest, 1900: Monday 29 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": "1900-01-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-01-29", "confidence": "determinate" } ], "quote": "In Budapest, Śivarātri 1900 falls on Monday 29 January. Caturdaśī runs from 08:51 on Mon 29 Jan to 05:49 on Tue 30 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/budapest/festivals/1900/shivaratri?on=1900-01-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-01-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1898, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-01-29T08:51:15+01:00", "utc": "1900-01-29T07:51:15Z", "ms": -2206541325253.5986 }, "end": { "local": "1900-01-30T05:49:02+01:00", "utc": "1900-01-30T04:49:02Z", "ms": -2206465858139.2197 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-01-29T08:51:15+01:00", "utc": "1900-01-29T07:51:15Z", "ms": -2206541325253.5986 }, "end": { "local": "1900-01-30T05:49:02+01:00", "utc": "1900-01-30T04:49:02Z", "ms": -2206465858139.2197 } }, "kaala": "arunodaya", "days": [ { "local_date": "1900-01-29", "window": { "start": { "local": "1900-01-29T05:18:14+01:00", "utc": "1900-01-29T04:18:14Z", "ms": -2206554106050.741 }, "end": { "local": "1900-01-29T07:15:11+01:00", "utc": "1900-01-29T06:15:11Z", "ms": -2206547089415.8447 } }, "covered_min": 0, "window_min": 117, "qualifies": false }, { "local_date": "1900-01-30", "window": { "start": { "local": "1900-01-30T05:17:24+01:00", "utc": "1900-01-30T04:17:24Z", "ms": -2206467755906.9014 }, "end": { "local": "1900-01-30T07:13:59+01:00", "utc": "1900-01-30T06:13:59Z", "ms": -2206460761178.3647 } }, "covered_min": 32, "window_min": 117, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:51 on Mon 29 Jan to 05:49 on Tue 30 Jan.", "fact": "1900-01-29T07:51:15Z → 1900-01-30T04:49:02Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:18–07:15 on the 29th, 05:17–07:14 on the 30th.", "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 117 minutes on the 29th and 32 of 117 on the 30th.", "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 1898 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Budapest, 1900: Tuesday 30 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": "1900-01-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-01-30", "confidence": "determinate" } ], "quote": "In Budapest, Yama Tarpaṇa 1900 falls on Tuesday 30 January. Caturdaśī runs from 08:51 on Mon 29 Jan to 05:49 on Tue 30 Jan and covers 32 of 117 minutes of aruṇodaya that dawn.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-02-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4684, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-02-02T15:27:48+01:00", "utc": "1900-02-02T14:27:48Z", "ms": -2206171931615.26 }, "end": { "local": "1900-02-03T12:13:58+01:00", "utc": "1900-02-03T11:13:58Z", "ms": -2206097162391.444 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-02-02T15:27:48+01:00", "utc": "1900-02-02T14:27:48Z", "ms": -2206171931615.26 }, "end": { "local": "1900-02-03T12:13:58+01:00", "utc": "1900-02-03T11:13:58Z", "ms": -2206097162391.444 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-02-02", "window": { "start": { "local": "1900-02-02T16:45:52+01:00", "utc": "1900-02-02T15:45:52Z", "ms": -2206167248032.833 }, "end": { "local": "1900-02-02T18:40:56+01:00", "utc": "1900-02-02T17:40:56Z", "ms": -2206160343995.523 } }, "covered_min": 115, "window_min": 115, "qualifies": true }, { "local_date": "1900-02-03", "window": { "start": { "local": "1900-02-03T16:47:26+01:00", "utc": "1900-02-03T15:47:26Z", "ms": -2206080754030.458 }, "end": { "local": "1900-02-03T18:42:07+01:00", "utc": "1900-02-03T17:42:07Z", "ms": -2206073873368.7646 } }, "covered_min": 0, "window_min": 115, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:28 on Fri 2 Feb to 12:14 on Sat 3 Feb.", "fact": "1900-02-02T14:27:48Z → 1900-02-03T11:13:58Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:46–18:41 on the 2nd, 16:47–18:42 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 115 of 115 minutes on the 2nd and 0 of 115 on the 3rd.", "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 4684 s" }, { "step": "ruling", "text": "Tila Caturthī, Budapest, 1900: Friday 2 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "tila-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-02-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-02-02", "confidence": "determinate" } ], "quote": "In Budapest, Tila Caturthī 1900 falls on Friday 2 February. Caturthī runs from 15:28 on Fri 2 Feb to 12:14 on Sat 3 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 491, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1900-02-03T12:13:58+01:00", "utc": "1900-02-03T11:13:58Z", "ms": -2206097162391.444 }, "end": { "local": "1900-02-04T09:28:37+01:00", "utc": "1900-02-04T08:28:37Z", "ms": -2206020682545.6426 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-02-03T12:13:58+01:00", "utc": "1900-02-03T11:13:58Z", "ms": -2206097162391.444 }, "end": { "local": "1900-02-04T09:28:37+01:00", "utc": "1900-02-04T08:28:37Z", "ms": -2206020682545.6426 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-02-03", "window": { "start": { "local": "1900-02-03T11:34:09+01:00", "utc": "1900-02-03T10:34:09Z", "ms": -2206099550891.732 }, "end": { "local": "1900-02-03T12:22:09+01:00", "utc": "1900-02-03T11:22:09Z", "ms": -2206096670891.732 } }, "covered_min": 8, "window_min": 48, "qualifies": true }, { "local_date": "1900-02-04", "window": { "start": { "local": "1900-02-04T11:34:16+01:00", "utc": "1900-02-04T10:34:16Z", "ms": -2206013144476.1226 }, "end": { "local": "1900-02-04T12:22:16+01:00", "utc": "1900-02-04T11:22:16Z", "ms": -2206010264476.1226 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 12:14 on Sat 3 Feb to 09:29 on Sun 4 Feb.", "fact": "1900-02-03T11:13:58Z → 1900-02-04T08:28:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 3rd, 11:34–12:22 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 8 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "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 491 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Budapest, 1900: Saturday 3 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": "1900-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-02-03", "confidence": "determinate" } ], "quote": "In Budapest, Śrī Pañcamī 1900 falls on Saturday 3 February. Pañcamī runs from 12:14 on Sat 3 Feb to 09:29 on Sun 4 Feb and covers 8 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 491, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1900-02-03T12:13:58+01:00", "utc": "1900-02-03T11:13:58Z", "ms": -2206097162391.444 }, "end": { "local": "1900-02-04T09:28:37+01:00", "utc": "1900-02-04T08:28:37Z", "ms": -2206020682545.6426 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-02-03T12:13:58+01:00", "utc": "1900-02-03T11:13:58Z", "ms": -2206097162391.444 }, "end": { "local": "1900-02-04T09:28:37+01:00", "utc": "1900-02-04T08:28:37Z", "ms": -2206020682545.6426 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-02-03", "window": { "start": { "local": "1900-02-03T11:34:09+01:00", "utc": "1900-02-03T10:34:09Z", "ms": -2206099550891.732 }, "end": { "local": "1900-02-03T12:22:09+01:00", "utc": "1900-02-03T11:22:09Z", "ms": -2206096670891.732 } }, "covered_min": 8, "window_min": 48, "qualifies": true }, { "local_date": "1900-02-04", "window": { "start": { "local": "1900-02-04T11:34:16+01:00", "utc": "1900-02-04T10:34:16Z", "ms": -2206013144476.1226 }, "end": { "local": "1900-02-04T12:22:16+01:00", "utc": "1900-02-04T11:22:16Z", "ms": -2206010264476.1226 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 12:14 on Sat 3 Feb to 09:29 on Sun 4 Feb.", "fact": "1900-02-03T11:13:58Z → 1900-02-04T08:28:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 3rd, 11:34–12:22 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 8 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "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 491 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Budapest, 1900: Saturday 3 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": "1900-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-02-03", "confidence": "determinate" } ], "quote": "In Budapest, Vasanta Pañcamī 1900 falls on Saturday 3 February. Pañcamī runs from 12:14 on Sat 3 Feb to 09:29 on Sun 4 Feb and covers 8 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 491, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-02-02T15:27:48+01:00", "utc": "1900-02-02T14:27:48Z", "ms": -2206171931615.26 }, "end": { "local": "1900-02-03T12:13:58+01:00", "utc": "1900-02-03T11:13:58Z", "ms": -2206097162391.444 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-02-02T15:27:48+01:00", "utc": "1900-02-02T14:27:48Z", "ms": -2206171931615.26 }, "end": { "local": "1900-02-03T12:13:58+01:00", "utc": "1900-02-03T11:13:58Z", "ms": -2206097162391.444 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-02-02", "window": { "start": { "local": "1900-02-02T11:34:02+01:00", "utc": "1900-02-02T10:34:02Z", "ms": -2206185958148.522 }, "end": { "local": "1900-02-02T12:22:02+01:00", "utc": "1900-02-02T11:22:02Z", "ms": -2206183078148.522 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-02-03", "window": { "start": { "local": "1900-02-03T11:34:09+01:00", "utc": "1900-02-03T10:34:09Z", "ms": -2206099550891.732 }, "end": { "local": "1900-02-03T12:22:09+01:00", "utc": "1900-02-03T11:22:09Z", "ms": -2206096670891.732 } }, "covered_min": 40, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:28 on Fri 2 Feb to 12:14 on Sat 3 Feb.", "fact": "1900-02-02T14:27:48Z → 1900-02-03T11:13:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 2nd, 11:34–12:22 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 2nd and 40 of 48 on the 3rd.", "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 491 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Budapest, 1900: Saturday 3 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-02-03", "confidence": "determinate" } ], "quote": "In Budapest, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1900 falls on Saturday 3 February. Caturthī runs from 15:28 on Fri 2 Feb to 12:14 on Sat 3 Feb and covers 40 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-02-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 788, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1900-02-05T07:19:16+01:00", "utc": "1900-02-05T06:19:16Z", "ms": -2205942044310.961 }, "end": { "local": "1900-02-06T05:50:56+01:00", "utc": "1900-02-06T04:50:56Z", "ms": -2205860943811.717 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-02-05T07:19:16+01:00", "utc": "1900-02-05T06:19:16Z", "ms": -2205942044310.961 }, "end": { "local": "1900-02-06T05:50:56+01:00", "utc": "1900-02-06T04:50:56Z", "ms": -2205860943811.717 } }, "kaala": "arunodaya", "days": [ { "local_date": "1900-02-05", "window": { "start": { "local": "1900-02-05T05:11:51+01:00", "utc": "1900-02-05T04:11:51Z", "ms": -2205949689193.81 }, "end": { "local": "1900-02-05T07:06:08+01:00", "utc": "1900-02-05T06:06:08Z", "ms": -2205942832164.475 } }, "covered_min": 0, "window_min": 114, "qualifies": false }, { "local_date": "1900-02-06", "window": { "start": { "local": "1900-02-06T05:10:50+01:00", "utc": "1900-02-06T04:10:50Z", "ms": -2205863350150.0693 }, "end": { "local": "1900-02-06T07:04:43+01:00", "utc": "1900-02-06T06:04:43Z", "ms": -2205856516998.1924 } }, "covered_min": 40, "window_min": 114, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 07:19 on Mon 5 Feb to 05:51 on Tue 6 Feb.", "fact": "1900-02-05T06:19:16Z → 1900-02-06T04:50:56Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:12–07:06 on the 5th, 05:11–07:05 on the 6th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during aruṇodaya. It covers 0 of 114 minutes on the 5th and 40 of 114 on the 6th.", "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 788 s" }, { "step": "ruling", "text": "Ratha Saptamī, Budapest, 1900: Tuesday 6 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": "1900-02-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-02-06", "confidence": "determinate" } ], "quote": "In Budapest, Ratha Saptamī 1900 falls on Tuesday 6 February. Saptamī runs from 07:19 on Mon 5 Feb to 05:51 on Tue 6 Feb and covers 40 of 114 minutes of aruṇodaya that dawn.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-02-09", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-02-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 655, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-02-09T05:38:56+01:00", "utc": "1900-02-09T04:38:56Z", "ms": -2205602464078.5776 }, "end": { "local": "1900-02-10T06:47:52+01:00", "utc": "1900-02-10T05:47:52Z", "ms": -2205511928139.8687 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-02-09T05:38:56+01:00", "utc": "1900-02-09T04:38:56Z", "ms": -2205602464078.5776 }, "end": { "local": "1900-02-10T06:47:52+01:00", "utc": "1900-02-10T05:47:52Z", "ms": -2205511928139.8687 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-02-09", "window": { "start": { "local": "1900-02-09T07:00:19+01:00", "utc": "1900-02-09T06:00:19Z", "ms": -2205597581464.537 }, "end": { "local": "1900-02-09T07:00:19+01:00", "utc": "1900-02-09T06:00:19Z", "ms": -2205597581464.537 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-02-10", "window": { "start": { "local": "1900-02-10T06:58:47+01:00", "utc": "1900-02-10T05:58:47Z", "ms": -2205511272789.0864 }, "end": { "local": "1900-02-10T06:58:47+01:00", "utc": "1900-02-10T05:58:47Z", "ms": -2205511272789.0864 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:39 on Fri 9 Feb to 06:48 on Sat 10 Feb.", "fact": "1900-02-09T04:38:56Z → 1900-02-10T05:47:52Z" }, { "step": "kaala", "text": "Sunrise is at 07:00 on the 9th and 06:59 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 9th and is not on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 655 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Budapest, 1900: Friday 9 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": "1900-02-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-02-09", "confidence": "determinate" } ], "quote": "In Budapest, Jayā Ekādaśī 1900 falls on Friday 9 February. Ekādaśī runs from 05:39 on Fri 9 Feb to 06:48 on Sat 10 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-02-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-02-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11478, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1900-02-10T06:47:52+01:00", "utc": "1900-02-10T05:47:52Z", "ms": -2205511928139.8687 }, "end": { "local": "1900-02-11T08:23:19+01:00", "utc": "1900-02-11T07:23:19Z", "ms": -2205419800536.597 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-02-10T06:47:52+01:00", "utc": "1900-02-10T05:47:52Z", "ms": -2205511928139.8687 }, "end": { "local": "1900-02-11T08:23:19+01:00", "utc": "1900-02-11T07:23:19Z", "ms": -2205419800536.597 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-02-10", "window": { "start": { "local": "1900-02-10T11:34:37+01:00", "utc": "1900-02-10T10:34:37Z", "ms": -2205494723461.254 }, "end": { "local": "1900-02-10T12:22:37+01:00", "utc": "1900-02-10T11:22:37Z", "ms": -2205491843461.254 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-02-11", "window": { "start": { "local": "1900-02-11T11:34:37+01:00", "utc": "1900-02-11T10:34:37Z", "ms": -2205408322804.3535 }, "end": { "local": "1900-02-11T12:22:37+01:00", "utc": "1900-02-11T11:22:37Z", "ms": -2205405442804.3535 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 06:48 on Sat 10 Feb to 08:23 on Sun 11 Feb.", "fact": "1900-02-10T05:47:52Z → 1900-02-11T07:23:19Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:35–12:23 on the 10th, 11:35–12:23 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 11478 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Budapest, 1900: Saturday 10 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": "1900-02-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-02-10", "confidence": "determinate" } ], "quote": "In Budapest, Bhīṣma Dvādaśī 1900 falls on Saturday 10 February. Dvādaśī runs from 06:48 on Sat 10 Feb to 08:23 on Sun 11 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/pradosha-vrata?on=1900-02-11", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-02-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24155, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-02-11T08:23:19+01:00", "utc": "1900-02-11T07:23:19Z", "ms": -2205419800536.597 }, "end": { "local": "1900-02-12T10:18:59+01:00", "utc": "1900-02-12T09:18:59Z", "ms": -2205326461002.5225 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-02-11T08:23:19+01:00", "utc": "1900-02-11T07:23:19Z", "ms": -2205419800536.597 }, "end": { "local": "1900-02-12T10:18:59+01:00", "utc": "1900-02-12T09:18:59Z", "ms": -2205326461002.5225 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-02-11", "window": { "start": { "local": "1900-02-11T17:00:00+01:00", "utc": "1900-02-11T16:00:00Z", "ms": -2205388799986.392 }, "end": { "local": "1900-02-11T18:51:25+01:00", "utc": "1900-02-11T17:51:25Z", "ms": -2205382114644.0977 } }, "covered_min": 111, "window_min": 111, "qualifies": true }, { "local_date": "1900-02-12", "window": { "start": { "local": "1900-02-12T17:01:34+01:00", "utc": "1900-02-12T16:01:34Z", "ms": -2205302305946.962 }, "end": { "local": "1900-02-12T18:52:34+01:00", "utc": "1900-02-12T17:52:34Z", "ms": -2205295645905.3774 } }, "covered_min": 0, "window_min": 111, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:23 on Sun 11 Feb to 10:19 on Mon 12 Feb.", "fact": "1900-02-11T07:23:19Z → 1900-02-12T09:18:59Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:00–18:51 on the 11th, 17:02–18:53 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 111 of 111 minutes on the 11th and 0 of 111 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24155 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Budapest, 1900: Sunday 11 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": "1900-02-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-02-11", "confidence": "determinate" } ], "quote": "In Budapest, Śukla Pradoṣa Vrata 1900 falls on Sunday 11 February. Trayodaśī runs from 08:23 on Sun 11 Feb to 10:19 on Mon 12 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-02-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-02-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 408, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-02-13T12:29:25+01:00", "utc": "1900-02-13T11:29:25Z", "ms": -2205232235485.8965 }, "end": { "local": "1900-02-14T14:50:14+01:00", "utc": "1900-02-14T13:50:14Z", "ms": -2205137386266.0654 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1900-02-13T12:29:25+01:00", "utc": "1900-02-13T11:29:25Z", "ms": -2205232235485.8965 }, "end": { "local": "1900-02-14T14:50:14+01:00", "utc": "1900-02-14T13:50:14Z", "ms": -2205137386266.0654 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-02-13", "window": { "start": { "local": "1900-02-13T11:34:36+01:00", "utc": "1900-02-13T10:34:36Z", "ms": -2205235523834.7793 }, "end": { "local": "1900-02-13T12:22:36+01:00", "utc": "1900-02-13T11:22:36Z", "ms": -2205232643834.7793 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-02-14", "window": { "start": { "local": "1900-02-14T11:34:35+01:00", "utc": "1900-02-14T10:34:35Z", "ms": -2205149125496.0195 }, "end": { "local": "1900-02-14T12:22:35+01:00", "utc": "1900-02-14T11:22:35Z", "ms": -2205146245496.0195 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 12:29 on Tue 13 Feb to 14:50 on Wed 14 Feb.", "fact": "1900-02-13T11:29:25Z → 1900-02-14T13:50:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:35–12:23 on the 13th, 11:35–12:23 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 408 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Budapest, 1900: Wednesday 14 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": "1900-02-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-02-14", "confidence": "determinate" } ], "quote": "In Budapest, Māghī Pūrṇimā 1900 falls on Wednesday 14 February. Pūrṇimā runs from 12:29 on Tue 13 Feb to 14:50 on Wed 14 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/sankashta-chaturthi?on=1900-02-18", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-02-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6439, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-02-17T22:17:03+01:00", "utc": "1900-02-17T21:17:03Z", "ms": -2204851377306.9653 }, "end": { "local": "1900-02-19T00:37:53+01:00", "utc": "1900-02-18T23:37:53Z", "ms": -2204756527321.2456 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1900-02-17T22:17:03+01:00", "utc": "1900-02-17T21:17:03Z", "ms": -2204851377306.9653 }, "end": { "local": "1900-02-19T00:37:53+01:00", "utc": "1900-02-18T23:37:53Z", "ms": -2204756527321.2456 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-02-17", "window": { "start": { "local": "1900-02-17T20:29:44+01:00", "utc": "1900-02-17T19:29:44Z", "ms": -2204857815877.108 }, "end": { "local": "1900-02-17T20:29:44+01:00", "utc": "1900-02-17T19:29:44Z", "ms": -2204857815877.108 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-02-18", "window": { "start": { "local": "1900-02-18T21:32:53+01:00", "utc": "1900-02-18T20:32:53Z", "ms": -2204767626876.154 }, "end": { "local": "1900-02-18T21:32:53+01:00", "utc": "1900-02-18T20:32:53Z", "ms": -2204767626876.154 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:17 on Sat 17 Feb to 00:38 on Mon 19 Feb.", "fact": "1900-02-17T21:17:03Z → 1900-02-18T23:37:53Z" }, { "step": "kaala", "text": "Moonrise is at 20:30 on the 17th and 21:33 on the 18th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 17th and is on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6439 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Budapest, 1900: Sunday 18 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": "1900-02-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-02-18", "confidence": "determinate" } ], "quote": "In Budapest, Saṅkaṣṭa Caturthī 1900 falls on Sunday 18 February. Caturthī runs from 22:17 on Sat 17 Feb to 00:38 on Mon 19 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/sankashta-chaturthi?on=1900-02-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/ekadashi?on=1900-02-25", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-02-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8680, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-02-25T04:08:41+01:00", "utc": "1900-02-25T03:08:41Z", "ms": -2204225478873.759 }, "end": { "local": "1900-02-26T02:05:58+01:00", "utc": "1900-02-26T01:05:58Z", "ms": -2204146442474.872 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1900-02-25T04:08:41+01:00", "utc": "1900-02-25T03:08:41Z", "ms": -2204225478873.759 }, "end": { "local": "1900-02-26T02:05:58+01:00", "utc": "1900-02-26T01:05:58Z", "ms": -2204146442474.872 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-02-25", "window": { "start": { "local": "1900-02-25T06:33:21+01:00", "utc": "1900-02-25T05:33:21Z", "ms": -2204216799258.506 }, "end": { "local": "1900-02-25T06:33:21+01:00", "utc": "1900-02-25T05:33:21Z", "ms": -2204216799258.506 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-02-26", "window": { "start": { "local": "1900-02-26T06:31:30+01:00", "utc": "1900-02-26T05:31:30Z", "ms": -2204130509560.744 }, "end": { "local": "1900-02-26T06:31:30+01:00", "utc": "1900-02-26T05:31:30Z", "ms": -2204130509560.744 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:09 on Sun 25 Feb to 02:06 on Mon 26 Feb.", "fact": "1900-02-25T03:08:41Z → 1900-02-26T01:05:58Z" }, { "step": "kaala", "text": "Sunrise is at 06:33 on the 25th and 06:32 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 25th and is not on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8680 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Budapest, 1900: Sunday 25 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": "1900-02-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-02-25", "confidence": "determinate" } ], "quote": "In Budapest, Vijayā Ekādaśī 1900 falls on Sunday 25 February. Ekādaśī runs from 04:09 on Sun 25 Feb to 02:06 on Mon 26 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-02-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-02-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12575, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-02-27T20:02:40+01:00", "utc": "1900-02-27T19:02:40Z", "ms": -2203995440444.9507 }, "end": { "local": "1900-02-28T16:20:16+01:00", "utc": "1900-02-28T15:20:16Z", "ms": -2203922383725.6743 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1900-02-27T20:02:40+01:00", "utc": "1900-02-27T19:02:40Z", "ms": -2203995440444.9507 }, "end": { "local": "1900-02-28T16:20:16+01:00", "utc": "1900-02-28T15:20:16Z", "ms": -2203922383725.6743 } }, "kaala": "nishita", "days": [ { "local_date": "1900-02-27", "window": { "start": { "local": "1900-02-27T23:32:15+01:00", "utc": "1900-02-27T22:32:15Z", "ms": -2203982865183.296 }, "end": { "local": "1900-02-28T00:20:15+01:00", "utc": "1900-02-27T23:20:15Z", "ms": -2203979985183.296 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-02-28", "window": { "start": { "local": "1900-02-28T23:32:04+01:00", "utc": "1900-02-28T22:32:04Z", "ms": -2203896476229.9136 }, "end": { "local": "1900-03-01T00:20:04+01:00", "utc": "1900-02-28T23:20:04Z", "ms": -2203893596229.9136 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 20:03 on Tue 27 Feb to 16:20 on Wed 28 Feb.", "fact": "1900-02-27T19:02:40Z → 1900-02-28T15:20:16Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:32–00:20 on the 27th, 23:32–00:20 on the 28th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 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. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 12575 s" }, { "step": "ruling", "text": "Mahāśivarātri, Budapest, 1900: Tuesday 27 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": "1900-02-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-02-27", "confidence": "determinate" } ], "quote": "In Budapest, Mahāśivarātri 1900 falls on Tuesday 27 February. Caturdaśī runs from 20:03 on Tue 27 Feb to 16:20 on Wed 28 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/pradosha-vrata?on=1900-02-27", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-02-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3213, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-02-26T23:21:14+01:00", "utc": "1900-02-26T22:21:14Z", "ms": -2204069926013.093 }, "end": { "local": "1900-02-27T20:02:40+01:00", "utc": "1900-02-27T19:02:40Z", "ms": -2203995440444.9507 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1900-02-26T23:21:14+01:00", "utc": "1900-02-26T22:21:14Z", "ms": -2204069926013.093 }, "end": { "local": "1900-02-27T20:02:40+01:00", "utc": "1900-02-27T19:02:40Z", "ms": -2203995440444.9507 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-02-26", "window": { "start": { "local": "1900-02-26T17:23:11+01:00", "utc": "1900-02-26T16:23:11Z", "ms": -2204091408617.358 }, "end": { "local": "1900-02-26T19:08:03+01:00", "utc": "1900-02-26T18:08:03Z", "ms": -2204085116895.866 } }, "covered_min": 0, "window_min": 105, "qualifies": false }, { "local_date": "1900-02-27", "window": { "start": { "local": "1900-02-27T17:24:42+01:00", "utc": "1900-02-27T16:24:42Z", "ms": -2204004917707.197 }, "end": { "local": "1900-02-27T19:09:07+01:00", "utc": "1900-02-27T18:09:07Z", "ms": -2203998653034.1567 } }, "covered_min": 104, "window_min": 104, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 23:21 on Mon 26 Feb to 20:03 on Tue 27 Feb.", "fact": "1900-02-26T22:21:14Z → 1900-02-27T19:02:40Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:23–19:08 on the 26th, 17:25–19:09 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 105 minutes on the 26th and 104 of 104 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3213 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Budapest, 1900: Tuesday 27 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": "1900-02-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-02-27", "confidence": "boundary" } ], "quote": "In Budapest, Kṛṣṇa Pradoṣa Vrata 1900 falls on Tuesday 27 February. Trayodaśī runs from 23:21 on Mon 26 Feb to 20:03 on Tue 27 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-02-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/vinayaka-chaturthi?on=1900-03-04", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-03-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36597, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-03-04T01:22:16+01:00", "utc": "1900-03-04T00:22:16Z", "ms": -2203630664212.939 }, "end": { "local": "1900-03-04T22:32:34+01:00", "utc": "1900-03-04T21:32:34Z", "ms": -2203554445813.9756 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1900-03-04T01:22:16+01:00", "utc": "1900-03-04T00:22:16Z", "ms": -2203630664212.939 }, "end": { "local": "1900-03-04T22:32:34+01:00", "utc": "1900-03-04T21:32:34Z", "ms": -2203554445813.9756 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-03-04", "window": { "start": { "local": "1900-03-04T11:32:12+01:00", "utc": "1900-03-04T10:32:12Z", "ms": -2203594067662.5674 }, "end": { "local": "1900-03-04T12:20:12+01:00", "utc": "1900-03-04T11:20:12Z", "ms": -2203591187662.5674 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-03-05", "window": { "start": { "local": "1900-03-05T11:31:59+01:00", "utc": "1900-03-05T10:31:59Z", "ms": -2203507680832.168 }, "end": { "local": "1900-03-05T12:19:59+01:00", "utc": "1900-03-05T11:19:59Z", "ms": -2203504800832.168 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 01:22 on Sun 4 Mar to 22:33 on Sun 4 Mar.", "fact": "1900-03-04T00:22:16Z → 1900-03-04T21:32:34Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 4th, 11:32–12:20 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 4th and 0 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36597 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Budapest, 1900: Sunday 4 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": "1900-03-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-03-04", "confidence": "determinate" } ], "quote": "In Budapest, Vināyaka Caturthī 1900 falls on Sunday 4 March. Caturthī runs from 01:22 on Sun 4 Mar to 22:33 on Sun 4 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/vinayaka-chaturthi?on=1900-03-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/ekadashi?on=1900-03-11", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-03-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23730, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-03-10T21:26:14+01:00", "utc": "1900-03-10T20:26:14Z", "ms": -2203040026456.0215 }, "end": { "local": "1900-03-11T23:29:03+01:00", "utc": "1900-03-11T22:29:03Z", "ms": -2202946256809.495 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1900-03-10T21:26:14+01:00", "utc": "1900-03-10T20:26:14Z", "ms": -2203040026456.0215 }, "end": { "local": "1900-03-11T23:29:03+01:00", "utc": "1900-03-11T22:29:03Z", "ms": -2202946256809.495 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-03-11", "window": { "start": { "local": "1900-03-11T06:06:32+01:00", "utc": "1900-03-11T05:06:32Z", "ms": -2203008808123.747 }, "end": { "local": "1900-03-11T06:06:32+01:00", "utc": "1900-03-11T05:06:32Z", "ms": -2203008808123.747 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-03-12", "window": { "start": { "local": "1900-03-12T06:04:33+01:00", "utc": "1900-03-12T05:04:33Z", "ms": -2202922527219.4067 }, "end": { "local": "1900-03-12T06:04:33+01:00", "utc": "1900-03-12T05:04:33Z", "ms": -2202922527219.4067 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:26 on Sat 10 Mar to 23:29 on Sun 11 Mar.", "fact": "1900-03-10T20:26:14Z → 1900-03-11T22:29:03Z" }, { "step": "kaala", "text": "Sunrise is at 06:07 on the 11th and 06:05 on the 12th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 11th and is not on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 23730 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Budapest, 1900: Sunday 11 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": "1900-03-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-03-11", "confidence": "determinate" } ], "quote": "In Budapest, Āmalakī Ekādaśī 1900 falls on Sunday 11 March. Ekādaśī runs from 21:26 on Sat 10 Mar to 23:29 on Sun 11 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-03-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-03-13", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-03-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23164, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-03-13T01:48:30+01:00", "utc": "1900-03-13T00:48:30Z", "ms": -2202851489728.2817 }, "end": { "local": "1900-03-14T04:16:12+01:00", "utc": "1900-03-14T03:16:12Z", "ms": -2202756227922.924 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1900-03-13T01:48:30+01:00", "utc": "1900-03-13T00:48:30Z", "ms": -2202851489728.2817 }, "end": { "local": "1900-03-14T04:16:12+01:00", "utc": "1900-03-14T03:16:12Z", "ms": -2202756227922.924 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-03-12", "window": { "start": { "local": "1900-03-12T17:43:58+01:00", "utc": "1900-03-12T16:43:58Z", "ms": -2202880562267.8086 }, "end": { "local": "1900-03-12T19:22:26+01:00", "utc": "1900-03-12T18:22:26Z", "ms": -2202874653524.7417 } }, "covered_min": 0, "window_min": 98, "qualifies": false }, { "local_date": "1900-03-13", "window": { "start": { "local": "1900-03-13T17:45:25+01:00", "utc": "1900-03-13T16:45:25Z", "ms": -2202794075337.5776 }, "end": { "local": "1900-03-13T19:23:26+01:00", "utc": "1900-03-13T18:23:26Z", "ms": -2202788194161.418 } }, "covered_min": 98, "window_min": 98, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:49 on Tue 13 Mar to 04:16 on Wed 14 Mar.", "fact": "1900-03-13T00:48:30Z → 1900-03-14T03:16:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:44–19:22 on the 12th, 17:45–19:23 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 98 minutes on the 12th and 98 of 98 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23164 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Budapest, 1900: Tuesday 13 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": "1900-03-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-03-13", "confidence": "determinate" } ], "quote": "In Budapest, Śukla Pradoṣa Vrata 1900 falls on Tuesday 13 March. Trayodaśī runs from 01:49 on Tue 13 Mar to 04:16 on Wed 14 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-03-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-03-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22518, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-03-15T06:45:35+01:00", "utc": "1900-03-15T05:45:35Z", "ms": -2202660865260.875 }, "end": { "local": "1900-03-16T09:11:48+01:00", "utc": "1900-03-16T08:11:48Z", "ms": -2202565692473.515 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1900-03-15T06:45:35+01:00", "utc": "1900-03-15T05:45:35Z", "ms": -2202660865260.875 }, "end": { "local": "1900-03-16T09:11:48+01:00", "utc": "1900-03-16T08:11:48Z", "ms": -2202565692473.515 } }, "kaala": "sayahna", "days": [ { "local_date": "1900-03-15", "window": { "start": { "local": "1900-03-15T15:26:21+01:00", "utc": "1900-03-15T14:26:21Z", "ms": -2202629619064.002 }, "end": { "local": "1900-03-15T17:48:18+01:00", "utc": "1900-03-15T16:48:18Z", "ms": -2202621102166.96 } }, "covered_min": 142, "window_min": 142, "qualifies": true }, { "local_date": "1900-03-16", "window": { "start": { "local": "1900-03-16T15:27:06+01:00", "utc": "1900-03-16T14:27:06Z", "ms": -2202543174133.9336 }, "end": { "local": "1900-03-16T17:49:44+01:00", "utc": "1900-03-16T16:49:44Z", "ms": -2202534615900.2144 } }, "covered_min": 0, "window_min": 143, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:46 on Thu 15 Mar to 09:12 on Fri 16 Mar.", "fact": "1900-03-15T05:45:35Z → 1900-03-16T08:11:48Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:26–17:48 on the 15th, 15:27–17:50 on the 16th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 142 of 142 minutes on the 15th and 0 of 143 on the 16th.", "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 22518 s" }, { "step": "ruling", "text": "Holikā Dahana, Budapest, 1900: Thursday 15 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": "1900-03-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-03-15", "confidence": "determinate" } ], "quote": "In Budapest, Holikā Dahana 1900 falls on Thursday 15 March. Pūrṇimā runs from 06:46 on Thu 15 Mar to 09:12 on Fri 16 Mar and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-03-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22518, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-03-15T06:45:35+01:00", "utc": "1900-03-15T05:45:35Z", "ms": -2202660865260.875 }, "end": { "local": "1900-03-16T09:11:48+01:00", "utc": "1900-03-16T08:11:48Z", "ms": -2202565692473.515 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1900-03-15T06:45:35+01:00", "utc": "1900-03-15T05:45:35Z", "ms": -2202660865260.875 }, "end": { "local": "1900-03-16T09:11:48+01:00", "utc": "1900-03-16T08:11:48Z", "ms": -2202565692473.515 } }, "kaala": "sayahna", "days": [ { "local_date": "1900-03-15", "window": { "start": { "local": "1900-03-15T15:26:21+01:00", "utc": "1900-03-15T14:26:21Z", "ms": -2202629619064.002 }, "end": { "local": "1900-03-15T17:48:18+01:00", "utc": "1900-03-15T16:48:18Z", "ms": -2202621102166.96 } }, "covered_min": 142, "window_min": 142, "qualifies": true }, { "local_date": "1900-03-16", "window": { "start": { "local": "1900-03-16T15:27:06+01:00", "utc": "1900-03-16T14:27:06Z", "ms": -2202543174133.9336 }, "end": { "local": "1900-03-16T17:49:44+01:00", "utc": "1900-03-16T16:49:44Z", "ms": -2202534615900.2144 } }, "covered_min": 0, "window_min": 143, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "1900-03-15", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:46 on Thu 15 Mar to 09:12 on Fri 16 Mar.", "fact": "1900-03-15T05:45:35Z → 1900-03-16T08:11:48Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:26–17:48 on the 15th, 15:27–17:50 on the 16th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 142 of 142 minutes on the 15th and 0 of 143 on the 16th.", "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 22518 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Thursday 15 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Budapest, 1900: Friday 16 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": "1900-03-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-03-16", "confidence": "determinate" } ], "quote": "In Budapest, Holī 1900 falls on Friday 16 March. It is kept the day after Holikā Dahana, which falls on Thursday 15 March. Pūrṇimā runs from 06:46 on Thu 15 Mar to 09:12 on Fri 16 Mar and covers all of sāyāhna on the 15th.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-03-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11715, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1900-03-16T09:11:48+01:00", "utc": "1900-03-16T08:11:48Z", "ms": -2202565692473.515 }, "end": { "local": "1900-03-17T11:31:05+01:00", "utc": "1900-03-17T10:31:05Z", "ms": -2202470934828.4736 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-03-16T09:11:48+01:00", "utc": "1900-03-16T08:11:48Z", "ms": -2202565692473.515 }, "end": { "local": "1900-03-17T11:31:05+01:00", "utc": "1900-03-17T10:31:05Z", "ms": -2202470934828.4736 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-03-16", "window": { "start": { "local": "1900-03-16T05:56:33+01:00", "utc": "1900-03-16T04:56:33Z", "ms": -2202577407068.81 }, "end": { "local": "1900-03-16T05:56:33+01:00", "utc": "1900-03-16T04:56:33Z", "ms": -2202577407068.81 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-03-17", "window": { "start": { "local": "1900-03-17T05:54:32+01:00", "utc": "1900-03-17T04:54:32Z", "ms": -2202491127733.4976 }, "end": { "local": "1900-03-17T05:54:32+01:00", "utc": "1900-03-17T04:54:32Z", "ms": -2202491127733.4976 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 09:12 on Fri 16 Mar to 11:31 on Sat 17 Mar.", "fact": "1900-03-16T08:11:48Z → 1900-03-17T10:31:05Z" }, { "step": "kaala", "text": "Sunrise is at 05:57 on the 16th and 05:55 on the 17th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be current at sunrise. It is not on the 16th and is on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 11715 s" }, { "step": "ruling", "text": "Vasantotsava, Budapest, 1900: Saturday 17 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": "1900-03-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-03-17", "confidence": "determinate" } ], "quote": "In Budapest, Vasantotsava 1900 falls on Saturday 17 March. Pratipadā runs from 09:12 on Fri 16 Mar to 11:31 on Sat 17 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/sankashta-chaturthi?on=1900-03-19", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-03-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19687, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-03-19T15:34:13+01:00", "utc": "1900-03-19T14:34:13Z", "ms": -2202283546979.6235 }, "end": { "local": "1900-03-20T17:08:49+01:00", "utc": "1900-03-20T16:08:49Z", "ms": -2202191471259.291 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-03-19T15:34:13+01:00", "utc": "1900-03-19T14:34:13Z", "ms": -2202283546979.6235 }, "end": { "local": "1900-03-20T17:08:49+01:00", "utc": "1900-03-20T16:08:49Z", "ms": -2202191471259.291 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-03-19", "window": { "start": { "local": "1900-03-19T21:32:52+01:00", "utc": "1900-03-19T20:32:52Z", "ms": -2202262028191.961 }, "end": { "local": "1900-03-19T21:32:52+01:00", "utc": "1900-03-19T20:32:52Z", "ms": -2202262028191.961 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-03-20", "window": { "start": { "local": "1900-03-20T22:36:56+01:00", "utc": "1900-03-20T21:36:56Z", "ms": -2202171783863.3335 }, "end": { "local": "1900-03-20T22:36:56+01:00", "utc": "1900-03-20T21:36:56Z", "ms": -2202171783863.3335 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:34 on Mon 19 Mar to 17:09 on Tue 20 Mar.", "fact": "1900-03-19T14:34:13Z → 1900-03-20T16:08:49Z" }, { "step": "kaala", "text": "Moonrise is at 21:33 on the 19th and 22:37 on the 20th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 19th and is not on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19687 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Budapest, 1900: Monday 19 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-03-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-03-19", "confidence": "determinate" } ], "quote": "In Budapest, Saṅkaṣṭa Caturthī 1900 falls on Monday 19 March. Caturthī runs from 15:34 on Mon 19 Mar to 17:09 on Tue 20 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/sankashta-chaturthi?on=1900-03-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-03-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21285, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1900-03-23T18:52:49+01:00", "utc": "1900-03-23T17:52:49Z", "ms": -2201926030835.593 }, "end": { "local": "1900-03-24T18:09:31+01:00", "utc": "1900-03-24T17:09:31Z", "ms": -2201842228768.791 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-03-23T18:52:49+01:00", "utc": "1900-03-23T17:52:49Z", "ms": -2201926030835.593 }, "end": { "local": "1900-03-24T18:09:31+01:00", "utc": "1900-03-24T17:09:31Z", "ms": -2201842228768.791 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-03-23", "window": { "start": { "local": "1900-03-23T11:27:04+01:00", "utc": "1900-03-23T10:27:04Z", "ms": -2201952775885.509 }, "end": { "local": "1900-03-23T12:15:04+01:00", "utc": "1900-03-23T11:15:04Z", "ms": -2201949895885.509 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-03-24", "window": { "start": { "local": "1900-03-24T11:26:46+01:00", "utc": "1900-03-24T10:26:46Z", "ms": -2201866394078.0073 }, "end": { "local": "1900-03-24T12:14:46+01:00", "utc": "1900-03-24T11:14:46Z", "ms": -2201863514078.0073 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 18:53 on Fri 23 Mar to 18:10 on Sat 24 Mar.", "fact": "1900-03-23T17:52:49Z → 1900-03-24T17:09:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:27–12:15 on the 23rd, 11:27–12:15 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 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. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 21285 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Budapest, 1900: Saturday 24 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": "1900-03-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-03-24", "confidence": "determinate" } ], "quote": "In Budapest, Śītalāṣṭamī 1900 falls on Saturday 24 March. Aṣṭamī runs from 18:53 on Fri 23 Mar to 18:10 on Sat 24 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-03-27", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-03-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22552, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-03-26T14:35:00+01:00", "utc": "1900-03-26T13:35:00Z", "ms": -2201682299631.251 }, "end": { "local": "1900-03-27T11:50:11+01:00", "utc": "1900-03-27T10:50:11Z", "ms": -2201605789018.8784 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-03-26T14:35:00+01:00", "utc": "1900-03-26T13:35:00Z", "ms": -2201682299631.251 }, "end": { "local": "1900-03-27T11:50:11+01:00", "utc": "1900-03-27T10:50:11Z", "ms": -2201605789018.8784 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-03-26", "window": { "start": { "local": "1900-03-26T05:36:21+01:00", "utc": "1900-03-26T04:36:21Z", "ms": -2201714619481.419 }, "end": { "local": "1900-03-26T05:36:21+01:00", "utc": "1900-03-26T04:36:21Z", "ms": -2201714619481.419 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-03-27", "window": { "start": { "local": "1900-03-27T05:34:19+01:00", "utc": "1900-03-27T04:34:19Z", "ms": -2201628340831.026 }, "end": { "local": "1900-03-27T05:34:19+01:00", "utc": "1900-03-27T04:34:19Z", "ms": -2201628340831.026 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:35 on Mon 26 Mar to 11:50 on Tue 27 Mar.", "fact": "1900-03-26T13:35:00Z → 1900-03-27T10:50:11Z" }, { "step": "kaala", "text": "Sunrise is at 05:36 on the 26th and 05:34 on the 27th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 26th and is on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22552 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Budapest, 1900: Tuesday 27 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": "1900-03-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-03-27", "confidence": "determinate" } ], "quote": "In Budapest, Pāpamocanī Ekādaśī 1900 falls on Tuesday 27 March. Ekādaśī runs from 14:35 on Mon 26 Mar to 11:50 on Tue 27 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-03-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-03-28", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-03-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33758, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-03-28T08:35:41+01:00", "utc": "1900-03-28T07:35:41Z", "ms": -2201531058791.85 }, "end": { "local": "1900-03-29T05:00:34+01:00", "utc": "1900-03-29T04:00:34Z", "ms": -2201457566496.9185 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-03-28T08:35:41+01:00", "utc": "1900-03-28T07:35:41Z", "ms": -2201531058791.85 }, "end": { "local": "1900-03-29T05:00:34+01:00", "utc": "1900-03-29T04:00:34Z", "ms": -2201457566496.9185 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-03-27", "window": { "start": { "local": "1900-03-27T18:05:23+01:00", "utc": "1900-03-27T17:05:23Z", "ms": -2201583276794.19 }, "end": { "local": "1900-03-27T19:36:59+01:00", "utc": "1900-03-27T18:36:59Z", "ms": -2201577781498.0513 } }, "covered_min": 0, "window_min": 92, "qualifies": false }, { "local_date": "1900-03-28", "window": { "start": { "local": "1900-03-28T18:06:48+01:00", "utc": "1900-03-28T17:06:48Z", "ms": -2201496792019.9653 }, "end": { "local": "1900-03-28T19:37:56+01:00", "utc": "1900-03-28T18:37:56Z", "ms": -2201491324174.4136 } }, "covered_min": 91, "window_min": 91, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:36 on Wed 28 Mar to 05:01 on Thu 29 Mar.", "fact": "1900-03-28T07:35:41Z → 1900-03-29T04:00:34Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:05–19:37 on the 27th, 18:07–19:38 on the 28th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 92 minutes on the 27th and 91 of 91 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33758 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Budapest, 1900: Wednesday 28 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": "1900-03-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-03-28", "confidence": "determinate" } ], "quote": "In Budapest, Kṛṣṇa Pradoṣa Vrata 1900 falls on Wednesday 28 March. Trayodaśī runs from 08:36 on Wed 28 Mar to 05:01 on Thu 29 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-03-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/shivaratri?on=1900-03-29", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-03-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3773, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-03-29T05:00:34+01:00", "utc": "1900-03-29T04:00:34Z", "ms": -2201457566496.9185 }, "end": { "local": "1900-03-30T01:15:07+01:00", "utc": "1900-03-30T00:15:07Z", "ms": -2201384692865.398 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-03-29T05:00:34+01:00", "utc": "1900-03-29T04:00:34Z", "ms": -2201457566496.9185 }, "end": { "local": "1900-03-30T01:15:07+01:00", "utc": "1900-03-30T00:15:07Z", "ms": -2201384692865.398 } }, "kaala": "nishita", "days": [ { "local_date": "1900-03-28", "window": { "start": { "local": "1900-03-28T23:24:32+01:00", "utc": "1900-03-28T22:24:32Z", "ms": -2201477727599.1465 }, "end": { "local": "1900-03-29T00:12:32+01:00", "utc": "1900-03-28T23:12:32Z", "ms": -2201474847599.1465 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-03-29", "window": { "start": { "local": "1900-03-29T23:24:14+01:00", "utc": "1900-03-29T22:24:14Z", "ms": -2201391345716.4365 }, "end": { "local": "1900-03-30T00:12:14+01:00", "utc": "1900-03-29T23:12:14Z", "ms": -2201388465716.4365 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:01 on Thu 29 Mar to 01:15 on Fri 30 Mar.", "fact": "1900-03-29T04:00:34Z → 1900-03-30T00:15:07Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:25–00:13 on the 28th, 23:24–00:12 on the 29th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3773 s" }, { "step": "ruling", "text": "Śivarātri, Budapest, 1900: Thursday 29 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": "1900-03-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-03-29", "confidence": "determinate" } ], "quote": "In Budapest, Śivarātri 1900 falls on Thursday 29 March. Caturdaśī runs from 05:01 on Thu 29 Mar to 01:15 on Fri 30 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/budapest/festivals/1900/shivaratri?on=1900-03-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20703, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1900-03-30T21:30:25+01:00", "utc": "1900-03-30T20:30:25Z", "ms": -2201311775249.6187 }, "end": { "local": "1900-03-31T17:57:42+01:00", "utc": "1900-03-31T16:57:42Z", "ms": -2201238138250.693 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-03-30T21:30:25+01:00", "utc": "1900-03-30T20:30:25Z", "ms": -2201311775249.6187 }, "end": { "local": "1900-03-31T17:57:42+01:00", "utc": "1900-03-31T16:57:42Z", "ms": -2201238138250.693 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-03-30", "window": { "start": { "local": "1900-03-30T11:24:57+01:00", "utc": "1900-03-30T10:24:57Z", "ms": -2201348103396.925 }, "end": { "local": "1900-03-30T12:12:57+01:00", "utc": "1900-03-30T11:12:57Z", "ms": -2201345223396.925 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-03-31", "window": { "start": { "local": "1900-03-31T11:24:39+01:00", "utc": "1900-03-31T10:24:39Z", "ms": -2201261721483.4805 }, "end": { "local": "1900-03-31T12:12:39+01:00", "utc": "1900-03-31T11:12:39Z", "ms": -2201258841483.4805 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 21:30 on Fri 30 Mar to 17:58 on Sat 31 Mar.", "fact": "1900-03-30T20:30:25Z → 1900-03-31T16:57:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 30th, 11:25–12:13 on the 31st.", "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 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 20703 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Budapest, 1900: Saturday 31 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": "1900-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-03-31", "confidence": "determinate" } ], "quote": "In Budapest, Navarātrārambha (Caitra) (Chaitra Navratri) 1900 falls on Saturday 31 March. Pratipadā runs from 21:30 on Fri 30 Mar to 17:58 on Sat 31 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-02", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 53, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1900-04-01T14:47:55+01:00", "utc": "1900-04-01T13:47:55Z", "ms": -2201163124649.1206 }, "end": { "local": "1900-04-02T12:11:09+01:00", "utc": "1900-04-02T11:11:09Z", "ms": -2201086130691.9663 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-04-01T14:47:55+01:00", "utc": "1900-04-01T13:47:55Z", "ms": -2201163124649.1206 }, "end": { "local": "1900-04-02T12:11:09+01:00", "utc": "1900-04-02T11:11:09Z", "ms": -2201086130691.9663 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-04-01", "window": { "start": { "local": "1900-04-01T11:24:21+01:00", "utc": "1900-04-01T10:24:21Z", "ms": -2201175339491.99 }, "end": { "local": "1900-04-01T12:12:21+01:00", "utc": "1900-04-01T11:12:21Z", "ms": -2201172459491.99 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-04-02", "window": { "start": { "local": "1900-04-02T11:24:03+01:00", "utc": "1900-04-02T10:24:03Z", "ms": -2201088957408.169 }, "end": { "local": "1900-04-02T12:12:03+01:00", "utc": "1900-04-02T11:12:03Z", "ms": -2201086077408.169 } }, "covered_min": 47, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 14:48 on Sun 1 Apr to 12:11 on Mon 2 Apr.", "fact": "1900-04-01T13:47:55Z → 1900-04-02T11:11:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 1st, 11:24–12:12 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 1st and 47 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 53 s < 300 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Budapest, 1900: Monday 2 April.", "fact": "confidence: boundary (margin)" } ], "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": "1900-04-02", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-02", "confidence": "determinate" } ], "quote": "In Budapest, Gaurī Tṛtīyā (Gangaur) 1900 falls on Monday 2 April. Tṛtīyā runs from 14:48 on Sun 1 Apr to 12:11 on Mon 2 Apr and covers 47 of 48 minutes of madhyāhna that midday. It is 0 min 53 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-02", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 53, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1900-04-01T14:47:55+01:00", "utc": "1900-04-01T13:47:55Z", "ms": -2201163124649.1206 }, "end": { "local": "1900-04-02T12:11:09+01:00", "utc": "1900-04-02T11:11:09Z", "ms": -2201086130691.9663 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-04-01T14:47:55+01:00", "utc": "1900-04-01T13:47:55Z", "ms": -2201163124649.1206 }, "end": { "local": "1900-04-02T12:11:09+01:00", "utc": "1900-04-02T11:11:09Z", "ms": -2201086130691.9663 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-04-01", "window": { "start": { "local": "1900-04-01T11:24:21+01:00", "utc": "1900-04-01T10:24:21Z", "ms": -2201175339491.99 }, "end": { "local": "1900-04-01T12:12:21+01:00", "utc": "1900-04-01T11:12:21Z", "ms": -2201172459491.99 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-04-02", "window": { "start": { "local": "1900-04-02T11:24:03+01:00", "utc": "1900-04-02T10:24:03Z", "ms": -2201088957408.169 }, "end": { "local": "1900-04-02T12:12:03+01:00", "utc": "1900-04-02T11:12:03Z", "ms": -2201086077408.169 } }, "covered_min": 47, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 14:48 on Sun 1 Apr to 12:11 on Mon 2 Apr.", "fact": "1900-04-01T13:47:55Z → 1900-04-02T11:11:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 1st, 11:24–12:12 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 1st and 47 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 53 s < 300 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Budapest, 1900: Monday 2 April.", "fact": "confidence: boundary (margin)" } ], "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": "1900-04-02", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-02", "confidence": "determinate" } ], "quote": "In Budapest, Saubhāgya Śayana Vrata 1900 falls on Monday 2 April. Tṛtīyā runs from 14:48 on Sun 1 Apr to 12:11 on Mon 2 Apr and covers 47 of 48 minutes of madhyāhna that midday. It is 0 min 53 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/vinayaka-chaturthi?on=1900-04-02", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-02", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 53, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-04-02T12:11:09+01:00", "utc": "1900-04-02T11:11:09Z", "ms": -2201086130691.9663 }, "end": { "local": "1900-04-03T10:15:51+01:00", "utc": "1900-04-03T09:15:51Z", "ms": -2201006648785.2827 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-04-02T12:11:09+01:00", "utc": "1900-04-02T11:11:09Z", "ms": -2201086130691.9663 }, "end": { "local": "1900-04-03T10:15:51+01:00", "utc": "1900-04-03T09:15:51Z", "ms": -2201006648785.2827 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-04-02", "window": { "start": { "local": "1900-04-02T11:24:03+01:00", "utc": "1900-04-02T10:24:03Z", "ms": -2201088957408.169 }, "end": { "local": "1900-04-02T12:12:03+01:00", "utc": "1900-04-02T11:12:03Z", "ms": -2201086077408.169 } }, "covered_min": 1, "window_min": 48, "qualifies": true }, { "local_date": "1900-04-03", "window": { "start": { "local": "1900-04-03T11:23:45+01:00", "utc": "1900-04-03T10:23:45Z", "ms": -2201002575217.135 }, "end": { "local": "1900-04-03T12:11:45+01:00", "utc": "1900-04-03T11:11:45Z", "ms": -2200999695217.135 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:11 on Mon 2 Apr to 10:16 on Tue 3 Apr.", "fact": "1900-04-02T11:11:09Z → 1900-04-03T09:15:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 2nd, 11:24–12:12 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 1 of 48 minutes on the 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 53 s < 300 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Budapest, 1900: Monday 2 April.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-04-02", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-02", "confidence": "determinate" } ], "quote": "In Budapest, Vināyaka Caturthī 1900 falls on Monday 2 April. Caturthī runs from 12:11 on Mon 2 Apr to 10:16 on Tue 3 Apr and covers 1 of 48 minutes of madhyāhna that midday. It is 0 min 53 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/budapest/festivals/1900/vinayaka-chaturthi?on=1900-04-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4074, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1900-04-03T10:15:51+01:00", "utc": "1900-04-03T09:15:51Z", "ms": -2201006648785.2827 }, "end": { "local": "1900-04-04T09:08:03+01:00", "utc": "1900-04-04T08:08:03Z", "ms": -2200924317323.0366 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-04-03T10:15:51+01:00", "utc": "1900-04-03T09:15:51Z", "ms": -2201006648785.2827 }, "end": { "local": "1900-04-04T09:08:03+01:00", "utc": "1900-04-04T08:08:03Z", "ms": -2200924317323.0366 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-04-03", "window": { "start": { "local": "1900-04-03T11:23:45+01:00", "utc": "1900-04-03T10:23:45Z", "ms": -2201002575217.135 }, "end": { "local": "1900-04-03T12:11:45+01:00", "utc": "1900-04-03T11:11:45Z", "ms": -2200999695217.135 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-04-04", "window": { "start": { "local": "1900-04-04T11:23:27+01:00", "utc": "1900-04-04T10:23:27Z", "ms": -2200916192903.165 }, "end": { "local": "1900-04-04T12:11:27+01:00", "utc": "1900-04-04T11:11:27Z", "ms": -2200913312903.165 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 10:16 on Tue 3 Apr to 09:08 on Wed 4 Apr.", "fact": "1900-04-03T09:15:51Z → 1900-04-04T08:08:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 3rd, 11:23–12:11 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 4074 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Budapest, 1900: Tuesday 3 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": "1900-04-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-03", "confidence": "determinate" } ], "quote": "In Budapest, Lakṣmī Pañcamī 1900 falls on Tuesday 3 April. Pañcamī runs from 10:16 on Tue 3 Apr to 09:08 on Wed 4 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2722, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1900-04-06T09:21:57+01:00", "utc": "1900-04-06T08:21:57Z", "ms": -2200750682730.909 }, "end": { "local": "1900-04-07T10:37:13+01:00", "utc": "1900-04-07T09:37:13Z", "ms": -2200659767067.556 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-04-06T09:21:57+01:00", "utc": "1900-04-06T08:21:57Z", "ms": -2200750682730.909 }, "end": { "local": "1900-04-07T10:37:13+01:00", "utc": "1900-04-07T09:37:13Z", "ms": -2200659767067.556 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-04-06", "window": { "start": { "local": "1900-04-06T11:22:52+01:00", "utc": "1900-04-06T10:22:52Z", "ms": -2200743427839.3105 }, "end": { "local": "1900-04-06T12:10:52+01:00", "utc": "1900-04-06T11:10:52Z", "ms": -2200740547839.3105 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-04-07", "window": { "start": { "local": "1900-04-07T11:22:35+01:00", "utc": "1900-04-07T10:22:35Z", "ms": -2200657045054.1855 }, "end": { "local": "1900-04-07T12:10:35+01:00", "utc": "1900-04-07T11:10:35Z", "ms": -2200654165054.1855 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 09:22 on Fri 6 Apr to 10:37 on Sat 7 Apr.", "fact": "1900-04-06T08:21:57Z → 1900-04-07T09:37:13Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 6th, 11:23–12:11 on the 7th.", "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 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2722 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Budapest, 1900: Friday 6 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": "1900-04-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-07", "confidence": "determinate" } ], "quote": "In Budapest, Bhavānī Utpatti 1900 falls on Friday 6 April. Aṣṭamī runs from 09:22 on Fri 6 Apr to 10:37 on Sat 7 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-07", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1030, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1900-04-07T10:37:13+01:00", "utc": "1900-04-07T09:37:13Z", "ms": -2200659767067.556 }, "end": { "local": "1900-04-08T12:27:28+01:00", "utc": "1900-04-08T11:27:28Z", "ms": -2200566752062.6636 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-04-07T10:37:13+01:00", "utc": "1900-04-07T09:37:13Z", "ms": -2200659767067.556 }, "end": { "local": "1900-04-08T12:27:28+01:00", "utc": "1900-04-08T11:27:28Z", "ms": -2200566752062.6636 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-04-07", "window": { "start": { "local": "1900-04-07T11:22:35+01:00", "utc": "1900-04-07T10:22:35Z", "ms": -2200657045054.1855 }, "end": { "local": "1900-04-07T12:10:35+01:00", "utc": "1900-04-07T11:10:35Z", "ms": -2200654165054.1855 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-04-08", "window": { "start": { "local": "1900-04-08T11:22:18+01:00", "utc": "1900-04-08T10:22:18Z", "ms": -2200570662075.994 }, "end": { "local": "1900-04-08T12:10:18+01:00", "utc": "1900-04-08T11:10:18Z", "ms": -2200567782075.994 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Navamī runs from 10:37 on Sat 7 Apr to 12:27 on Sun 8 Apr.", "fact": "1900-04-07T09:37:13Z → 1900-04-08T11:27:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 7th, 11:22–12:10 on the 8th.", "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 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 and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1030 s" }, { "step": "ruling", "text": "Rāma Navamī, Budapest, 1900: Saturday 7 April.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "1900-04-07", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-07", "confidence": "boundary" } ], "quote": "In Budapest, Rāma Navamī 1900 falls on Saturday 7 April. Navamī runs from 10:37 on Sat 7 Apr to 12:27 on Sun 8 Apr and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-04-10", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34400, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-04-09T14:41:41+01:00", "utc": "1900-04-09T13:41:41Z", "ms": -2200472298699.852 }, "end": { "local": "1900-04-10T17:08:20+01:00", "utc": "1900-04-10T16:08:20Z", "ms": -2200377099581.798 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-04-09T14:41:41+01:00", "utc": "1900-04-09T13:41:41Z", "ms": -2200472298699.852 }, "end": { "local": "1900-04-10T17:08:20+01:00", "utc": "1900-04-10T16:08:20Z", "ms": -2200377099581.798 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-04-09", "window": { "start": { "local": "1900-04-09T05:08:22+01:00", "utc": "1900-04-09T04:08:22Z", "ms": -2200506698251.954 }, "end": { "local": "1900-04-09T05:08:22+01:00", "utc": "1900-04-09T04:08:22Z", "ms": -2200506698251.954 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-04-10", "window": { "start": { "local": "1900-04-10T05:06:25+01:00", "utc": "1900-04-10T04:06:25Z", "ms": -2200420415475.776 }, "end": { "local": "1900-04-10T05:06:25+01:00", "utc": "1900-04-10T04:06:25Z", "ms": -2200420415475.776 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:42 on Mon 9 Apr to 17:08 on Tue 10 Apr.", "fact": "1900-04-09T13:41:41Z → 1900-04-10T16:08:20Z" }, { "step": "kaala", "text": "Sunrise is at 05:08 on the 9th and 05:06 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 9th and is on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34400 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Budapest, 1900: Tuesday 10 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": "1900-04-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-10", "confidence": "determinate" } ], "quote": "In Budapest, Kāmadā Ekādaśī 1900 falls on Tuesday 10 April. Ekādaśī runs from 14:42 on Mon 9 Apr to 17:08 on Tue 10 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-04-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27080, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "1900-04-12T21:29:16+01:00", "utc": "1900-04-12T20:29:16Z", "ms": -2200188643526.2563 }, "end": { "local": "1900-05-13T18:32:06+01:00", "utc": "1900-05-13T17:32:06Z", "ms": -2197520874072.1387 } }, "span": { "of": "transit", "start": { "local": "1900-04-12T21:29:16+01:00", "utc": "1900-04-12T20:29:16Z", "ms": -2200188643526.2563 }, "end": { "local": "1900-04-12T21:29:16+01:00", "utc": "1900-04-12T20:29:16Z", "ms": -2200188643526.2563 } }, "kaala": "day", "days": [ { "local_date": "1900-04-12", "window": { "start": { "local": "1900-04-12T05:02:32+01:00", "utc": "1900-04-12T04:02:32Z", "ms": -2200247848310.4897 }, "end": { "local": "1900-04-13T05:00:36+01:00", "utc": "1900-04-13T04:00:36Z", "ms": -2200161563853.8535 } }, "covered_min": 1, "window_min": 1438, "qualifies": true }, { "local_date": "1900-04-13", "window": { "start": { "local": "1900-04-13T05:00:36+01:00", "utc": "1900-04-13T04:00:36Z", "ms": -2200161563853.8535 }, "end": { "local": "1900-04-14T04:58:41+01:00", "utc": "1900-04-14T03:58:41Z", "ms": -2200075278768.7935 } }, "covered_min": 0, "window_min": 1438, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 21:29 on Thu 12 Apr.", "fact": "1900-04-12T20:29:16Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:03 on the 12th, and from 05:01 on the 13th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 12th, 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 27080 s" }, { "step": "ruling", "text": "Vaiśākhī, Budapest, 1900: Thursday 12 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": "1900-04-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-12", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1900-04-12", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "1900-04-13", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Budapest, Vaiśākhī 1900 falls on Thursday 12 April. The Sun enters Meṣa at 21:29 on Thu 12 Apr, and the rule counts the day from sunrise. By the Tamil rule for the first day of a solar month, which gives a transit after sunset to the next day, it is 13 April.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26848, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-04-11T19:36:56+01:00", "utc": "1900-04-11T18:36:56Z", "ms": -2200281783617.0674 }, "end": { "local": "1900-04-12T21:59:06+01:00", "utc": "1900-04-12T20:59:06Z", "ms": -2200186854315.295 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-04-11T19:36:56+01:00", "utc": "1900-04-11T18:36:56Z", "ms": -2200281783617.0674 }, "end": { "local": "1900-04-12T21:59:06+01:00", "utc": "1900-04-12T20:59:06Z", "ms": -2200186854315.295 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-04-11", "window": { "start": { "local": "1900-04-11T11:21:28+01:00", "utc": "1900-04-11T10:21:28Z", "ms": -2200311511796.5176 }, "end": { "local": "1900-04-11T12:09:28+01:00", "utc": "1900-04-11T11:09:28Z", "ms": -2200308631796.5176 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-04-12", "window": { "start": { "local": "1900-04-12T11:21:12+01:00", "utc": "1900-04-12T10:21:12Z", "ms": -2200225127858.9326 }, "end": { "local": "1900-04-12T12:09:12+01:00", "utc": "1900-04-12T11:09:12Z", "ms": -2200222247858.9326 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:37 on Wed 11 Apr to 21:59 on Thu 12 Apr.", "fact": "1900-04-11T18:36:56Z → 1900-04-12T20:59:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 11th, 11:21–12:09 on the 12th.", "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 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 26848 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Budapest, 1900: Thursday 12 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": "1900-04-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-12", "confidence": "determinate" } ], "quote": "In Budapest, Anaṅga Trayodaśī 1900 falls on Thursday 12 April. Trayodaśī runs from 19:37 on Wed 11 Apr to 21:59 on Thu 12 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/pradosha-vrata?on=1900-04-12", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-12", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 861, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-04-11T19:36:56+01:00", "utc": "1900-04-11T18:36:56Z", "ms": -2200281783617.0674 }, "end": { "local": "1900-04-12T21:59:06+01:00", "utc": "1900-04-12T20:59:06Z", "ms": -2200186854315.295 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-04-11T19:36:56+01:00", "utc": "1900-04-11T18:36:56Z", "ms": -2200281783617.0674 }, "end": { "local": "1900-04-12T21:59:06+01:00", "utc": "1900-04-12T20:59:06Z", "ms": -2200186854315.295 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-04-11", "window": { "start": { "local": "1900-04-11T18:26:29+01:00", "utc": "1900-04-11T17:26:29Z", "ms": -2200286011419.898 }, "end": { "local": "1900-04-11T19:51:17+01:00", "utc": "1900-04-11T18:51:17Z", "ms": -2200280923005.31 } }, "covered_min": 14, "window_min": 85, "qualifies": true }, { "local_date": "1900-04-12", "window": { "start": { "local": "1900-04-12T18:27:53+01:00", "utc": "1900-04-12T17:27:53Z", "ms": -2200199527407.3755 }, "end": { "local": "1900-04-12T19:52:14+01:00", "utc": "1900-04-12T18:52:14Z", "ms": -2200194465600.2393 } }, "covered_min": 84, "window_min": 84, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:37 on Wed 11 Apr to 21:59 on Thu 12 Apr.", "fact": "1900-04-11T18:36:56Z → 1900-04-12T20:59:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:26–19:51 on the 11th, 18:28–19:52 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 14 of 85 minutes on the 11th and 84 of 84 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 861 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Budapest, 1900: Thursday 12 April.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-04-12", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-12", "confidence": "boundary" } ], "quote": "In Budapest, Śukla Pradoṣa Vrata 1900 falls on Thursday 12 April. Trayodaśī runs from 19:37 on Wed 11 Apr to 21:59 on Thu 12 Apr and covers all of pradoṣa that evening. It also reaches the previous evening for 14 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/budapest/festivals/1900/pradosha-vrata?on=1900-04-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35394, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-04-12T21:59:06+01:00", "utc": "1900-04-12T20:59:06Z", "ms": -2200186854315.295 }, "end": { "local": "1900-04-14T00:08:48+01:00", "utc": "1900-04-13T23:08:48Z", "ms": -2200092672461.2827 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-04-12T21:59:06+01:00", "utc": "1900-04-12T20:59:06Z", "ms": -2200186854315.295 }, "end": { "local": "1900-04-14T00:08:48+01:00", "utc": "1900-04-13T23:08:48Z", "ms": -2200092672461.2827 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-04-12", "window": { "start": { "local": "1900-04-12T11:21:12+01:00", "utc": "1900-04-12T10:21:12Z", "ms": -2200225127858.9326 }, "end": { "local": "1900-04-12T12:09:12+01:00", "utc": "1900-04-12T11:09:12Z", "ms": -2200222247858.9326 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-04-13", "window": { "start": { "local": "1900-04-13T11:20:56+01:00", "utc": "1900-04-13T10:20:56Z", "ms": -2200138743634.2856 }, "end": { "local": "1900-04-13T12:08:56+01:00", "utc": "1900-04-13T11:08:56Z", "ms": -2200135863634.2856 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:59 on Thu 12 Apr to 00:09 on Sat 14 Apr.", "fact": "1900-04-12T20:59:06Z → 1900-04-13T23:08:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 12th, 11:21–12:09 on the 13th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī 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. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 35394 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Budapest, 1900: Friday 13 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": "1900-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-13", "confidence": "determinate" } ], "quote": "In Budapest, Viṣṇudamanaka Caturdaśī 1900 falls on Friday 13 April. Caturdaśī runs from 21:59 on Thu 12 Apr to 00:09 on Sat 14 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33502, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-04-14T00:08:48+01:00", "utc": "1900-04-13T23:08:48Z", "ms": -2200092672461.2827 }, "end": { "local": "1900-04-15T02:02:03+01:00", "utc": "1900-04-15T01:02:03Z", "ms": -2199999476650.075 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1900-04-14T00:08:48+01:00", "utc": "1900-04-13T23:08:48Z", "ms": -2200092672461.2827 }, "end": { "local": "1900-04-15T02:02:03+01:00", "utc": "1900-04-15T01:02:03Z", "ms": -2199999476650.075 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-04-14", "window": { "start": { "local": "1900-04-14T11:20:41+01:00", "utc": "1900-04-14T10:20:41Z", "ms": -2200052359103.6943 }, "end": { "local": "1900-04-14T12:08:41+01:00", "utc": "1900-04-14T11:08:41Z", "ms": -2200049479103.6943 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-04-15", "window": { "start": { "local": "1900-04-15T11:20:26+01:00", "utc": "1900-04-15T10:20:26Z", "ms": -2199965974248.378 }, "end": { "local": "1900-04-15T12:08:26+01:00", "utc": "1900-04-15T11:08:26Z", "ms": -2199963094248.378 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:09 on Sat 14 Apr to 02:02 on Sun 15 Apr.", "fact": "1900-04-13T23:08:48Z → 1900-04-15T01:02:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 14th, 11:20–12:08 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33502 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Budapest, 1900: Saturday 14 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": "1900-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-14", "confidence": "determinate" } ], "quote": "In Budapest, Caitrī Pūrṇimā 1900 falls on Saturday 14 April. Pūrṇimā runs from 00:09 on Sat 14 Apr to 02:02 on Sun 15 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/sankashta-chaturthi?on=1900-04-18", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27109, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-04-18T05:39:06+01:00", "utc": "1900-04-18T04:39:06Z", "ms": -2199727253869.3022 }, "end": { "local": "1900-04-19T06:03:19+01:00", "utc": "1900-04-19T05:03:19Z", "ms": -2199639401096.025 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-04-18T05:39:06+01:00", "utc": "1900-04-18T04:39:06Z", "ms": -2199727253869.3022 }, "end": { "local": "1900-04-19T06:03:19+01:00", "utc": "1900-04-19T05:03:19Z", "ms": -2199639401096.025 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-04-17", "window": { "start": { "local": "1900-04-17T21:32:08+01:00", "utc": "1900-04-17T20:32:08Z", "ms": -2199756471775.418 }, "end": { "local": "1900-04-17T21:32:08+01:00", "utc": "1900-04-17T20:32:08Z", "ms": -2199756471775.418 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-04-18", "window": { "start": { "local": "1900-04-18T22:31:30+01:00", "utc": "1900-04-18T21:31:30Z", "ms": -2199666510173.808 }, "end": { "local": "1900-04-18T22:31:30+01:00", "utc": "1900-04-18T21:31:30Z", "ms": -2199666510173.808 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:39 on Wed 18 Apr to 06:03 on Thu 19 Apr.", "fact": "1900-04-18T04:39:06Z → 1900-04-19T05:03:19Z" }, { "step": "kaala", "text": "Moonrise is at 21:32 on the 17th and 22:31 on the 18th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 17th and is on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27109 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Budapest, 1900: Wednesday 18 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": "1900-04-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-18", "confidence": "determinate" } ], "quote": "In Budapest, Saṅkaṣṭa Caturthī 1900 falls on Wednesday 18 April. Caturthī runs from 05:39 on Wed 18 Apr to 06:03 on Thu 19 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/sankashta-chaturthi?on=1900-04-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/ekadashi?on=1900-04-25", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24112, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-04-24T21:56:37+01:00", "utc": "1900-04-24T20:56:37Z", "ms": -2199150203235.458 }, "end": { "local": "1900-04-25T19:00:28+01:00", "utc": "1900-04-25T18:00:28Z", "ms": -2199074372320.8086 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-04-24T21:56:37+01:00", "utc": "1900-04-24T20:56:37Z", "ms": -2199150203235.458 }, "end": { "local": "1900-04-25T19:00:28+01:00", "utc": "1900-04-25T18:00:28Z", "ms": -2199074372320.8086 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-04-25", "window": { "start": { "local": "1900-04-25T04:38:29+01:00", "utc": "1900-04-25T03:38:29Z", "ms": -2199126091017.0806 }, "end": { "local": "1900-04-25T04:38:29+01:00", "utc": "1900-04-25T03:38:29Z", "ms": -2199126091017.0806 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-04-26", "window": { "start": { "local": "1900-04-26T04:36:44+01:00", "utc": "1900-04-26T03:36:44Z", "ms": -2199039795538.16 }, "end": { "local": "1900-04-26T04:36:44+01:00", "utc": "1900-04-26T03:36:44Z", "ms": -2199039795538.16 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:57 on Tue 24 Apr to 19:00 on Wed 25 Apr.", "fact": "1900-04-24T20:56:37Z → 1900-04-25T18:00:28Z" }, { "step": "kaala", "text": "Sunrise is at 04:38 on the 25th and 04:37 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 25th and is not on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 24112 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Budapest, 1900: Wednesday 25 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": "1900-04-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-25", "confidence": "determinate" } ], "quote": "In Budapest, Varūthinī Ekādaśī 1900 falls on Wednesday 25 April. Ekādaśī runs from 21:57 on Tue 24 Apr to 19:00 on Wed 25 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-04-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-04-26", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10622, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-04-26T15:50:24+01:00", "utc": "1900-04-26T14:50:24Z", "ms": -2198999375844.9395 }, "end": { "local": "1900-04-27T12:34:44+01:00", "utc": "1900-04-27T11:34:44Z", "ms": -2198924715846.926 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-04-26T15:50:24+01:00", "utc": "1900-04-26T14:50:24Z", "ms": -2198999375844.9395 }, "end": { "local": "1900-04-27T12:34:44+01:00", "utc": "1900-04-27T11:34:44Z", "ms": -2198924715846.926 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-04-26", "window": { "start": { "local": "1900-04-26T18:47:27+01:00", "utc": "1900-04-26T17:47:27Z", "ms": -2198988753433.9248 }, "end": { "local": "1900-04-26T20:05:47+01:00", "utc": "1900-04-26T19:05:47Z", "ms": -2198984052836.278 } }, "covered_min": 78, "window_min": 78, "qualifies": true }, { "local_date": "1900-04-27", "window": { "start": { "local": "1900-04-27T18:48:50+01:00", "utc": "1900-04-27T17:48:50Z", "ms": -2198902269992.7605 }, "end": { "local": "1900-04-27T20:06:46+01:00", "utc": "1900-04-27T19:06:46Z", "ms": -2198897594156.7852 } }, "covered_min": 0, "window_min": 78, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 15:50 on Thu 26 Apr to 12:35 on Fri 27 Apr.", "fact": "1900-04-26T14:50:24Z → 1900-04-27T11:34:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:47–20:06 on the 26th, 18:49–20:07 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 78 of 78 minutes on the 26th and 0 of 78 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10622 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Budapest, 1900: Thursday 26 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": "1900-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-26", "confidence": "determinate" } ], "quote": "In Budapest, Kṛṣṇa Pradoṣa Vrata 1900 falls on Thursday 26 April. Trayodaśī runs from 15:50 on Thu 26 Apr to 12:35 on Fri 27 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-04-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/shivaratri?on=1900-04-27", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-04-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33448, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-04-27T12:34:44+01:00", "utc": "1900-04-27T11:34:44Z", "ms": -2198924715846.926 }, "end": { "local": "1900-04-28T09:22:32+01:00", "utc": "1900-04-28T08:22:32Z", "ms": -2198849847502.1152 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-04-27T12:34:44+01:00", "utc": "1900-04-27T11:34:44Z", "ms": -2198924715846.926 }, "end": { "local": "1900-04-28T09:22:32+01:00", "utc": "1900-04-28T08:22:32Z", "ms": -2198849847502.1152 } }, "kaala": "nishita", "days": [ { "local_date": "1900-04-26", "window": { "start": { "local": "1900-04-26T23:17:14+01:00", "utc": "1900-04-26T22:17:14Z", "ms": -2198972566192.749 }, "end": { "local": "1900-04-27T00:05:14+01:00", "utc": "1900-04-26T23:05:14Z", "ms": -2198969686192.749 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-04-27", "window": { "start": { "local": "1900-04-27T23:17:04+01:00", "utc": "1900-04-27T22:17:04Z", "ms": -2198886175607.853 }, "end": { "local": "1900-04-28T00:05:04+01:00", "utc": "1900-04-27T23:05:04Z", "ms": -2198883295607.853 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:35 on Fri 27 Apr to 09:23 on Sat 28 Apr.", "fact": "1900-04-27T11:34:44Z → 1900-04-28T08:22:32Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:17–00:05 on the 26th, 23:17–00:05 on the 27th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 26th and 48 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 33448 s" }, { "step": "ruling", "text": "Śivarātri, Budapest, 1900: Friday 27 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-04-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-04-27", "confidence": "determinate" } ], "quote": "In Budapest, Śivarātri 1900 falls on Friday 27 April. Caturdaśī runs from 12:35 on Fri 27 Apr to 09:23 on Sat 28 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/budapest/festivals/1900/shivaratri?on=1900-04-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10097, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1900-05-01T01:40:03+01:00", "utc": "1900-05-01T00:40:03Z", "ms": -2198618397349.6936 }, "end": { "local": "1900-05-02T00:12:11+01:00", "utc": "1900-05-01T23:12:11Z", "ms": -2198537268776.6936 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-01T01:40:03+01:00", "utc": "1900-05-01T00:40:03Z", "ms": -2198618397349.6936 }, "end": { "local": "1900-05-02T00:12:11+01:00", "utc": "1900-05-01T23:12:11Z", "ms": -2198537268776.6936 } }, "kaala": "purvahna", "days": [ { "local_date": "1900-05-01", "window": { "start": { "local": "1900-05-01T04:28:19+01:00", "utc": "1900-05-01T03:28:19Z", "ms": -2198608300846.8994 }, "end": { "local": "1900-05-01T09:17:00+01:00", "utc": "1900-05-01T08:17:00Z", "ms": -2198590979861.9072 } }, "covered_min": 289, "window_min": 289, "qualifies": true }, { "local_date": "1900-05-02", "window": { "start": { "local": "1900-05-02T04:26:42+01:00", "utc": "1900-05-02T03:26:42Z", "ms": -2198521998210.1064 }, "end": { "local": "1900-05-02T09:16:23+01:00", "utc": "1900-05-02T08:16:23Z", "ms": -2198504617281.083 } }, "covered_min": 0, "window_min": 290, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 01:40 on Tue 1 May to 00:12 on Wed 2 May.", "fact": "1900-05-01T00:40:03Z → 1900-05-01T23:12:11Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 04:28–09:17 on the 1st, 04:27–09:16 on the 2nd.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pūrvāhṇa. It covers 289 of 289 minutes on the 1st and 0 of 290 on the 2nd.", "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 10097 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Budapest, 1900: Tuesday 1 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "not_evaluated": "The row calls the day special with Rohiṇī nakṣatra and a Wednesday; neither is tested.", "kaala": "purvahna", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-05-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-01", "confidence": "determinate" } ], "quote": "In Budapest, Akṣaya Tṛtīyā 1900 falls on Tuesday 1 May. Tṛtīyā runs from 01:40 on Tue 1 May to 00:12 on Wed 2 May and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14490, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1900-05-01T01:40:03+01:00", "utc": "1900-05-01T00:40:03Z", "ms": -2198618397349.6936 }, "end": { "local": "1900-05-02T00:12:11+01:00", "utc": "1900-05-01T23:12:11Z", "ms": -2198537268776.6936 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-01T01:40:03+01:00", "utc": "1900-05-01T00:40:03Z", "ms": -2198618397349.6936 }, "end": { "local": "1900-05-02T00:12:11+01:00", "utc": "1900-05-01T23:12:11Z", "ms": -2198537268776.6936 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-04-30", "window": { "start": { "local": "1900-04-30T18:52:59+01:00", "utc": "1900-04-30T17:52:59Z", "ms": -2198642820612.588 }, "end": { "local": "1900-04-30T20:09:42+01:00", "utc": "1900-04-30T19:09:42Z", "ms": -2198638217977.1628 } }, "covered_min": 0, "window_min": 77, "qualifies": false }, { "local_date": "1900-05-01", "window": { "start": { "local": "1900-05-01T18:54:22+01:00", "utc": "1900-05-01T17:54:22Z", "ms": -2198556337891.923 }, "end": { "local": "1900-05-01T20:10:41+01:00", "utc": "1900-05-01T19:10:41Z", "ms": -2198551759267.681 } }, "covered_min": 76, "window_min": 76, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 01:40 on Tue 1 May to 00:12 on Wed 2 May.", "fact": "1900-05-01T00:40:03Z → 1900-05-01T23:12:11Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:53–20:10 on the 30th, 18:54–20:11 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 0 of 77 minutes on the 30th and 76 of 76 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 14490 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Budapest, 1900: Tuesday 1 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-05-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-01", "confidence": "determinate" } ], "quote": "In Budapest, Paraśurāma Jayantī 1900 falls on Tuesday 1 May. Tṛtīyā runs from 01:40 on Tue 1 May to 00:12 on Wed 2 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/vinayaka-chaturthi?on=1900-05-02", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39902, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-05-02T00:12:11+01:00", "utc": "1900-05-01T23:12:11Z", "ms": -2198537268776.6936 }, "end": { "local": "1900-05-02T23:27:57+01:00", "utc": "1900-05-02T22:27:57Z", "ms": -2198453522901.9685 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-02T00:12:11+01:00", "utc": "1900-05-01T23:12:11Z", "ms": -2198537268776.6936 }, "end": { "local": "1900-05-02T23:27:57+01:00", "utc": "1900-05-02T22:27:57Z", "ms": -2198453522901.9685 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-05-02", "window": { "start": { "local": "1900-05-02T11:17:13+01:00", "utc": "1900-05-02T10:17:13Z", "ms": -2198497366816.5713 }, "end": { "local": "1900-05-02T12:05:13+01:00", "utc": "1900-05-02T11:05:13Z", "ms": -2198494486816.5713 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-05-03", "window": { "start": { "local": "1900-05-03T11:17:06+01:00", "utc": "1900-05-03T10:17:06Z", "ms": -2198410973746.9492 }, "end": { "local": "1900-05-03T12:05:06+01:00", "utc": "1900-05-03T11:05:06Z", "ms": -2198408093746.9492 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:12 on Wed 2 May to 23:28 on Wed 2 May.", "fact": "1900-05-01T23:12:11Z → 1900-05-02T22:27:57Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:17–12:05 on the 2nd, 11:17–12:05 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 39902 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Budapest, 1900: Wednesday 2 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": "1900-05-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-02", "confidence": "determinate" } ], "quote": "In Budapest, Vināyaka Caturthī 1900 falls on Wednesday 2 May. Caturthī runs from 00:12 on Wed 2 May to 23:28 on Wed 2 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/vinayaka-chaturthi?on=1900-05-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40964, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1900-05-02T23:27:57+01:00", "utc": "1900-05-02T22:27:57Z", "ms": -2198453522901.9685 }, "end": { "local": "1900-05-03T23:29:47+01:00", "utc": "1900-05-03T22:29:47Z", "ms": -2198367012730.043 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-02T23:27:57+01:00", "utc": "1900-05-02T22:27:57Z", "ms": -2198453522901.9685 }, "end": { "local": "1900-05-03T23:29:47+01:00", "utc": "1900-05-03T22:29:47Z", "ms": -2198367012730.043 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-05-02", "window": { "start": { "local": "1900-05-02T11:17:13+01:00", "utc": "1900-05-02T10:17:13Z", "ms": -2198497366816.5713 }, "end": { "local": "1900-05-02T12:05:13+01:00", "utc": "1900-05-02T11:05:13Z", "ms": -2198494486816.5713 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-05-03", "window": { "start": { "local": "1900-05-03T11:17:06+01:00", "utc": "1900-05-03T10:17:06Z", "ms": -2198410973746.9492 }, "end": { "local": "1900-05-03T12:05:06+01:00", "utc": "1900-05-03T11:05:06Z", "ms": -2198408093746.9492 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 23:28 on Wed 2 May to 23:30 on Thu 3 May.", "fact": "1900-05-02T22:27:57Z → 1900-05-03T22:29:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:17–12:05 on the 2nd, 11:17–12:05 on the 3rd.", "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 2nd and 48 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: unstated → only-day · margin 40964 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Budapest, 1900: Thursday 3 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shankara-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sankara jayanti." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-05-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-03", "confidence": "determinate" } ], "quote": "In Budapest, Śaṅkara Jayantī 1900 falls on Thursday 3 May. Pañcamī runs from 23:28 on Wed 2 May to 23:30 on Thu 3 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34420, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1900-05-05T00:16:33+01:00", "utc": "1900-05-04T23:16:33Z", "ms": -2198277806906.6843 }, "end": { "local": "1900-05-06T01:43:09+01:00", "utc": "1900-05-06T00:43:09Z", "ms": -2198186211097.7966 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-05T00:16:33+01:00", "utc": "1900-05-04T23:16:33Z", "ms": -2198277806906.6843 }, "end": { "local": "1900-05-06T01:43:09+01:00", "utc": "1900-05-06T00:43:09Z", "ms": -2198186211097.7966 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-05-05", "window": { "start": { "local": "1900-05-05T11:16:54+01:00", "utc": "1900-05-05T10:16:54Z", "ms": -2198238186043.0293 }, "end": { "local": "1900-05-05T12:04:54+01:00", "utc": "1900-05-05T11:04:54Z", "ms": -2198235306043.0293 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-05-06", "window": { "start": { "local": "1900-05-06T11:16:49+01:00", "utc": "1900-05-06T10:16:49Z", "ms": -2198151791401.0327 }, "end": { "local": "1900-05-06T12:04:49+01:00", "utc": "1900-05-06T11:04:49Z", "ms": -2198148911401.0327 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 00:17 on Sat 5 May to 01:43 on Sun 6 May.", "fact": "1900-05-04T23:16:33Z → 1900-05-06T00:43:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:17–12:05 on the 5th, 11:17–12:05 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 34420 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Budapest, 1900: Saturday 5 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": "1900-05-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-05", "confidence": "determinate" } ], "quote": "In Budapest, Gaṅgotpatti (Ganga Saptami) 1900 falls on Saturday 5 May. Saptamī runs from 00:17 on Sat 5 May to 01:43 on Sun 6 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-05-10", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14784, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-05-09T08:22:23+01:00", "utc": "1900-05-09T07:22:23Z", "ms": -2197903057025.1057 }, "end": { "local": "1900-05-10T10:41:54+01:00", "utc": "1900-05-10T09:41:54Z", "ms": -2197808286239.105 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-09T08:22:23+01:00", "utc": "1900-05-09T07:22:23Z", "ms": -2197903057025.1057 }, "end": { "local": "1900-05-10T10:41:54+01:00", "utc": "1900-05-10T09:41:54Z", "ms": -2197808286239.105 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-05-09", "window": { "start": { "local": "1900-05-09T04:15:59+01:00", "utc": "1900-05-09T03:15:59Z", "ms": -2197917840774.512 }, "end": { "local": "1900-05-09T04:15:59+01:00", "utc": "1900-05-09T03:15:59Z", "ms": -2197917840774.512 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-05-10", "window": { "start": { "local": "1900-05-10T04:14:33+01:00", "utc": "1900-05-10T03:14:33Z", "ms": -2197831526529.1257 }, "end": { "local": "1900-05-10T04:14:33+01:00", "utc": "1900-05-10T03:14:33Z", "ms": -2197831526529.1257 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:22 on Wed 9 May to 10:42 on Thu 10 May.", "fact": "1900-05-09T07:22:23Z → 1900-05-10T09:41:54Z" }, { "step": "kaala", "text": "Sunrise is at 04:16 on the 9th and 04:15 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 9th and is on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 14784 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Budapest, 1900: Thursday 10 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": "1900-05-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-10", "confidence": "determinate" } ], "quote": "In Budapest, Mohinī Ekādaśī 1900 falls on Thursday 10 May. Ekādaśī runs from 08:22 on Wed 9 May to 10:42 on Thu 10 May and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-05-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2079, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1900-05-10T10:41:54+01:00", "utc": "1900-05-10T09:41:54Z", "ms": -2197808286239.105 }, "end": { "local": "1900-05-11T12:46:46+01:00", "utc": "1900-05-11T11:46:46Z", "ms": -2197714394242.0002 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-10T10:41:54+01:00", "utc": "1900-05-10T09:41:54Z", "ms": -2197808286239.105 }, "end": { "local": "1900-05-11T12:46:46+01:00", "utc": "1900-05-11T11:46:46Z", "ms": -2197714394242.0002 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-05-10", "window": { "start": { "local": "1900-05-10T11:16:33+01:00", "utc": "1900-05-10T10:16:33Z", "ms": -2197806207477.567 }, "end": { "local": "1900-05-10T12:04:33+01:00", "utc": "1900-05-10T11:04:33Z", "ms": -2197803327477.567 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-05-11", "window": { "start": { "local": "1900-05-11T11:16:30+01:00", "utc": "1900-05-11T10:16:30Z", "ms": -2197719810140.6777 }, "end": { "local": "1900-05-11T12:04:30+01:00", "utc": "1900-05-11T11:04:30Z", "ms": -2197716930140.6777 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 10:42 on Thu 10 May to 12:47 on Fri 11 May.", "fact": "1900-05-10T09:41:54Z → 1900-05-11T11:46:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:17–12:05 on the 10th, 11:16–12:04 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 48 of 48 on the 11th.", "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 2079 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Budapest, 1900: Thursday 10 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": "1900-05-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-10", "confidence": "determinate" } ], "quote": "In Budapest, Paraśurāma Dvādaśī 1900 falls on Thursday 10 May. Dvādaśī runs from 10:42 on Thu 10 May to 12:47 on Fri 11 May and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2079, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1900-05-10T10:41:54+01:00", "utc": "1900-05-10T09:41:54Z", "ms": -2197808286239.105 }, "end": { "local": "1900-05-11T12:46:46+01:00", "utc": "1900-05-11T11:46:46Z", "ms": -2197714394242.0002 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-10T10:41:54+01:00", "utc": "1900-05-10T09:41:54Z", "ms": -2197808286239.105 }, "end": { "local": "1900-05-11T12:46:46+01:00", "utc": "1900-05-11T11:46:46Z", "ms": -2197714394242.0002 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-05-10", "window": { "start": { "local": "1900-05-10T11:16:33+01:00", "utc": "1900-05-10T10:16:33Z", "ms": -2197806207477.567 }, "end": { "local": "1900-05-10T12:04:33+01:00", "utc": "1900-05-10T11:04:33Z", "ms": -2197803327477.567 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-05-11", "window": { "start": { "local": "1900-05-11T11:16:30+01:00", "utc": "1900-05-11T10:16:30Z", "ms": -2197719810140.6777 }, "end": { "local": "1900-05-11T12:04:30+01:00", "utc": "1900-05-11T11:04:30Z", "ms": -2197716930140.6777 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 10:42 on Thu 10 May to 12:47 on Fri 11 May.", "fact": "1900-05-10T09:41:54Z → 1900-05-11T11:46:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:17–12:05 on the 10th, 11:16–12:04 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 48 of 48 on the 11th.", "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 2079 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Budapest, 1900: Thursday 10 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": "1900-05-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-10", "confidence": "determinate" } ], "quote": "In Budapest, Rukmiṇī Dvādaśī 1900 falls on Thursday 10 May. Dvādaśī runs from 10:42 on Thu 10 May to 12:47 on Fri 11 May and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/pradosha-vrata?on=1900-05-11", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16753, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-05-11T12:46:46+01:00", "utc": "1900-05-11T11:46:46Z", "ms": -2197714394242.0002 }, "end": { "local": "1900-05-12T14:29:56+01:00", "utc": "1900-05-12T13:29:56Z", "ms": -2197621804391.3691 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-11T12:46:46+01:00", "utc": "1900-05-11T11:46:46Z", "ms": -2197714394242.0002 }, "end": { "local": "1900-05-12T14:29:56+01:00", "utc": "1900-05-12T13:29:56Z", "ms": -2197621804391.3691 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-05-11", "window": { "start": { "local": "1900-05-11T19:07:50+01:00", "utc": "1900-05-11T18:07:50Z", "ms": -2197691529629.1042 }, "end": { "local": "1900-05-11T20:20:22+01:00", "utc": "1900-05-11T19:20:22Z", "ms": -2197687178092.2307 } }, "covered_min": 73, "window_min": 73, "qualifies": true }, { "local_date": "1900-05-12", "window": { "start": { "local": "1900-05-12T19:09:09+01:00", "utc": "1900-05-12T18:09:09Z", "ms": -2197605051408.2776 }, "end": { "local": "1900-05-12T20:21:19+01:00", "utc": "1900-05-12T19:21:19Z", "ms": -2197600721065.626 } }, "covered_min": 0, "window_min": 72, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:47 on Fri 11 May to 14:30 on Sat 12 May.", "fact": "1900-05-11T11:46:46Z → 1900-05-12T13:29:56Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:08–20:20 on the 11th, 19:09–20:21 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 73 of 73 minutes on the 11th and 0 of 72 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16753 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Budapest, 1900: Friday 11 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": "1900-05-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-11", "confidence": "determinate" } ], "quote": "In Budapest, Śukla Pradoṣa Vrata 1900 falls on Friday 11 May. Trayodaśī runs from 12:47 on Fri 11 May to 14:30 on Sat 12 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-05-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12197, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-05-12T14:29:56+01:00", "utc": "1900-05-12T13:29:56Z", "ms": -2197621804391.3691 }, "end": { "local": "1900-05-13T15:47:09+01:00", "utc": "1900-05-13T14:47:09Z", "ms": -2197530770673.82 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-12T14:29:56+01:00", "utc": "1900-05-12T13:29:56Z", "ms": -2197621804391.3691 }, "end": { "local": "1900-05-13T15:47:09+01:00", "utc": "1900-05-13T14:47:09Z", "ms": -2197530770673.82 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-05-12", "window": { "start": { "local": "1900-05-12T19:09:09+01:00", "utc": "1900-05-12T18:09:09Z", "ms": -2197605051408.2776 }, "end": { "local": "1900-05-12T20:21:19+01:00", "utc": "1900-05-12T19:21:19Z", "ms": -2197600721065.626 } }, "covered_min": 72, "window_min": 72, "qualifies": true }, { "local_date": "1900-05-13", "window": { "start": { "local": "1900-05-13T19:10:26+01:00", "utc": "1900-05-13T18:10:26Z", "ms": -2197518573800.2224 }, "end": { "local": "1900-05-13T20:22:16+01:00", "utc": "1900-05-13T19:22:16Z", "ms": -2197514264335.9016 } }, "covered_min": 0, "window_min": 72, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:30 on Sat 12 May to 15:47 on Sun 13 May.", "fact": "1900-05-12T13:29:56Z → 1900-05-13T14:47:09Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:09–20:21 on the 12th, 19:10–20:22 on the 13th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 72 of 72 minutes on the 12th and 0 of 72 on the 13th.", "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 12197 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Budapest, 1900: Saturday 12 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": "1900-05-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-12", "confidence": "determinate" } ], "quote": "In Budapest, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 1900 falls on Saturday 12 May. Caturdaśī runs from 14:30 on Sat 12 May to 15:47 on Sun 13 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13363, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-05-13T15:47:09+01:00", "utc": "1900-05-13T14:47:09Z", "ms": -2197530770673.82 }, "end": { "local": "1900-05-14T16:36:36+01:00", "utc": "1900-05-14T15:36:36Z", "ms": -2197441404422.8013 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-13T15:47:09+01:00", "utc": "1900-05-13T14:47:09Z", "ms": -2197530770673.82 }, "end": { "local": "1900-05-14T16:36:36+01:00", "utc": "1900-05-14T15:36:36Z", "ms": -2197441404422.8013 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-05-13", "window": { "start": { "local": "1900-05-13T11:16:26+01:00", "utc": "1900-05-13T10:16:26Z", "ms": -2197547013819.3062 }, "end": { "local": "1900-05-13T12:04:26+01:00", "utc": "1900-05-13T11:04:26Z", "ms": -2197544133819.3062 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-05-14", "window": { "start": { "local": "1900-05-14T11:16:25+01:00", "utc": "1900-05-14T10:16:25Z", "ms": -2197460614830.2344 }, "end": { "local": "1900-05-14T12:04:25+01:00", "utc": "1900-05-14T11:04:25Z", "ms": -2197457734830.2344 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:47 on Sun 13 May to 16:37 on Mon 14 May.", "fact": "1900-05-13T14:47:09Z → 1900-05-14T15:36:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:16–12:04 on the 13th, 11:16–12:04 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13363 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Budapest, 1900: Monday 14 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": "1900-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-14", "confidence": "determinate" } ], "quote": "In Budapest, Buddha Pūrṇimā 1900 falls on Monday 14 May. Pūrṇimā runs from 15:47 on Sun 13 May to 16:37 on Mon 14 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13363, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-05-13T15:47:09+01:00", "utc": "1900-05-13T14:47:09Z", "ms": -2197530770673.82 }, "end": { "local": "1900-05-14T16:36:36+01:00", "utc": "1900-05-14T15:36:36Z", "ms": -2197441404422.8013 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-13T15:47:09+01:00", "utc": "1900-05-13T14:47:09Z", "ms": -2197530770673.82 }, "end": { "local": "1900-05-14T16:36:36+01:00", "utc": "1900-05-14T15:36:36Z", "ms": -2197441404422.8013 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-05-13", "window": { "start": { "local": "1900-05-13T11:16:26+01:00", "utc": "1900-05-13T10:16:26Z", "ms": -2197547013819.3062 }, "end": { "local": "1900-05-13T12:04:26+01:00", "utc": "1900-05-13T11:04:26Z", "ms": -2197544133819.3062 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-05-14", "window": { "start": { "local": "1900-05-14T11:16:25+01:00", "utc": "1900-05-14T10:16:25Z", "ms": -2197460614830.2344 }, "end": { "local": "1900-05-14T12:04:25+01:00", "utc": "1900-05-14T11:04:25Z", "ms": -2197457734830.2344 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:47 on Sun 13 May to 16:37 on Mon 14 May.", "fact": "1900-05-13T14:47:09Z → 1900-05-14T15:36:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:16–12:04 on the 13th, 11:16–12:04 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 13363 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Budapest, 1900: Monday 14 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": "1900-05-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-14", "confidence": "determinate" } ], "quote": "In Budapest, Sampat Gaurī Vrata 1900 falls on Monday 14 May. Pūrṇimā runs from 15:47 on Sun 13 May to 16:37 on Mon 14 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/sankashta-chaturthi?on=1900-05-17", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20906, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-05-17T16:21:25+01:00", "utc": "1900-05-17T15:21:25Z", "ms": -2197183114824.898 }, "end": { "local": "1900-05-18T15:26:18+01:00", "utc": "1900-05-18T14:26:18Z", "ms": -2197100021881.3508 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-17T16:21:25+01:00", "utc": "1900-05-17T15:21:25Z", "ms": -2197183114824.898 }, "end": { "local": "1900-05-18T15:26:18+01:00", "utc": "1900-05-18T14:26:18Z", "ms": -2197100021881.3508 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-05-17", "window": { "start": { "local": "1900-05-17T22:09:51+01:00", "utc": "1900-05-17T21:09:51Z", "ms": -2197162209194.1082 }, "end": { "local": "1900-05-17T22:09:51+01:00", "utc": "1900-05-17T21:09:51Z", "ms": -2197162209194.1082 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-05-18", "window": { "start": { "local": "1900-05-18T22:51:31+01:00", "utc": "1900-05-18T21:51:31Z", "ms": -2197073308828.5703 }, "end": { "local": "1900-05-18T22:51:31+01:00", "utc": "1900-05-18T21:51:31Z", "ms": -2197073308828.5703 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:21 on Thu 17 May to 15:26 on Fri 18 May.", "fact": "1900-05-17T15:21:25Z → 1900-05-18T14:26:18Z" }, { "step": "kaala", "text": "Moonrise is at 22:10 on the 17th and 22:52 on the 18th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 17th and is not on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20906 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Budapest, 1900: Thursday 17 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": "1900-05-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-17", "confidence": "determinate" } ], "quote": "In Budapest, Saṅkaṣṭa Caturthī 1900 falls on Thursday 17 May. Caturthī runs from 16:21 on Thu 17 May to 15:26 on Fri 18 May and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/sankashta-chaturthi?on=1900-05-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/ekadashi?on=1900-05-24", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1866, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-05-24T03:26:38+01:00", "utc": "1900-05-24T02:26:38Z", "ms": -2196624802307.117 }, "end": { "local": "1900-05-25T00:50:31+01:00", "utc": "1900-05-24T23:50:31Z", "ms": -2196547768809.276 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-24T03:26:38+01:00", "utc": "1900-05-24T02:26:38Z", "ms": -2196624802307.117 }, "end": { "local": "1900-05-25T00:50:31+01:00", "utc": "1900-05-24T23:50:31Z", "ms": -2196547768809.276 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-05-24", "window": { "start": { "local": "1900-05-24T03:57:43+01:00", "utc": "1900-05-24T02:57:43Z", "ms": -2196622936676.9985 }, "end": { "local": "1900-05-24T03:57:43+01:00", "utc": "1900-05-24T02:57:43Z", "ms": -2196622936676.9985 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-05-25", "window": { "start": { "local": "1900-05-25T03:56:46+01:00", "utc": "1900-05-25T02:56:46Z", "ms": -2196536593568.4106 }, "end": { "local": "1900-05-25T03:56:46+01:00", "utc": "1900-05-25T02:56:46Z", "ms": -2196536593568.4106 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 03:27 on Thu 24 May to 00:51 on Fri 25 May.", "fact": "1900-05-24T02:26:38Z → 1900-05-24T23:50:31Z" }, { "step": "kaala", "text": "Sunrise is at 03:58 on the 24th and 03:57 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 1866 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Budapest, 1900: Thursday 24 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": "1900-05-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-24", "confidence": "determinate" } ], "quote": "In Budapest, Aparā Ekādaśī 1900 falls on Thursday 24 May. Ekādaśī runs from 03:27 on Thu 24 May to 00:51 on Fri 25 May and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-05-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-05-26", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1471, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-05-25T22:16:25+01:00", "utc": "1900-05-25T21:16:25Z", "ms": -2196470614885.0903 }, "end": { "local": "1900-05-26T19:50:31+01:00", "utc": "1900-05-26T18:50:31Z", "ms": -2196392969344.9697 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-25T22:16:25+01:00", "utc": "1900-05-25T21:16:25Z", "ms": -2196470614885.0903 }, "end": { "local": "1900-05-26T19:50:31+01:00", "utc": "1900-05-26T18:50:31Z", "ms": -2196392969344.9697 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-05-25", "window": { "start": { "local": "1900-05-25T19:24:54+01:00", "utc": "1900-05-25T18:24:54Z", "ms": -2196480905617.4104 }, "end": { "local": "1900-05-25T20:33:02+01:00", "utc": "1900-05-25T19:33:02Z", "ms": -2196476817965.0872 } }, "covered_min": 0, "window_min": 68, "qualifies": false }, { "local_date": "1900-05-26", "window": { "start": { "local": "1900-05-26T19:26:00+01:00", "utc": "1900-05-26T18:26:00Z", "ms": -2196394440013.1218 }, "end": { "local": "1900-05-26T20:33:52+01:00", "utc": "1900-05-26T19:33:52Z", "ms": -2196390368093.7402 } }, "covered_min": 25, "window_min": 68, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:16 on Fri 25 May to 19:51 on Sat 26 May.", "fact": "1900-05-25T21:16:25Z → 1900-05-26T18:50:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:25–20:33 on the 25th, 19:26–20:34 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 68 minutes on the 25th and 25 of 68 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 1471 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Budapest, 1900: Saturday 26 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": "1900-05-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-26", "confidence": "determinate" } ], "quote": "In Budapest, Kṛṣṇa Pradoṣa Vrata 1900 falls on Saturday 26 May. Trayodaśī runs from 22:16 on Fri 25 May to 19:51 on Sat 26 May and covers 25 of 68 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-05-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/shivaratri?on=1900-05-26", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12359, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-05-26T19:50:31+01:00", "utc": "1900-05-26T18:50:31Z", "ms": -2196392969344.9697 }, "end": { "local": "1900-05-27T17:39:23+01:00", "utc": "1900-05-27T16:39:23Z", "ms": -2196314436737.798 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-26T19:50:31+01:00", "utc": "1900-05-26T18:50:31Z", "ms": -2196392969344.9697 }, "end": { "local": "1900-05-27T17:39:23+01:00", "utc": "1900-05-27T16:39:23Z", "ms": -2196314436737.798 } }, "kaala": "nishita", "days": [ { "local_date": "1900-05-26", "window": { "start": { "local": "1900-05-26T23:16:30+01:00", "utc": "1900-05-26T22:16:30Z", "ms": -2196380610315.4407 }, "end": { "local": "1900-05-27T00:04:30+01:00", "utc": "1900-05-26T23:04:30Z", "ms": -2196377730315.4407 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-05-27", "window": { "start": { "local": "1900-05-27T23:16:37+01:00", "utc": "1900-05-27T22:16:37Z", "ms": -2196294203213.1768 }, "end": { "local": "1900-05-28T00:04:37+01:00", "utc": "1900-05-27T23:04:37Z", "ms": -2196291323213.1768 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 19:51 on Sat 26 May to 17:39 on Sun 27 May.", "fact": "1900-05-26T18:50:31Z → 1900-05-27T16:39:23Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:16–00:04 on the 26th, 23:17–00:05 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 12359 s" }, { "step": "ruling", "text": "Śivarātri, Budapest, 1900: Saturday 26 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": "1900-05-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-26", "confidence": "determinate" } ], "quote": "In Budapest, Śivarātri 1900 falls on Saturday 26 May. Caturdaśī runs from 19:51 on Sat 26 May to 17:39 on Sun 27 May and covers all of niśītha that night.", "cite": "https://ahargana.org/budapest/festivals/1900/shivaratri?on=1900-05-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-05-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5011, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1900-05-30T13:39:43+01:00", "utc": "1900-05-30T12:39:43Z", "ms": -2196069616584.398 }, "end": { "local": "1900-05-31T13:29:01+01:00", "utc": "1900-05-31T12:29:01Z", "ms": -2195983858991.9854 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-30T13:39:43+01:00", "utc": "1900-05-30T12:39:43Z", "ms": -2196069616584.398 }, "end": { "local": "1900-05-31T13:29:01+01:00", "utc": "1900-05-31T12:29:01Z", "ms": -2195983858991.9854 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-05-30", "window": { "start": { "local": "1900-05-30T11:17:22+01:00", "utc": "1900-05-30T10:17:22Z", "ms": -2196078157569.7588 }, "end": { "local": "1900-05-30T12:05:22+01:00", "utc": "1900-05-30T11:05:22Z", "ms": -2196075277569.7588 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-05-31", "window": { "start": { "local": "1900-05-31T11:17:30+01:00", "utc": "1900-05-31T10:17:30Z", "ms": -2195991749859.776 }, "end": { "local": "1900-05-31T12:05:30+01:00", "utc": "1900-05-31T11:05:30Z", "ms": -2195988869859.776 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 13:40 on Wed 30 May to 13:29 on Thu 31 May.", "fact": "1900-05-30T12:39:43Z → 1900-05-31T12:29:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:17–12:05 on the 30th, 11:18–12:06 on the 31st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 30th and 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 5011 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Budapest, 1900: Thursday 31 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": "1900-05-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-05-31", "confidence": "determinate" } ], "quote": "In Budapest, Rambhā Tṛtīyā 1900 falls on Thursday 31 May. Tṛtīyā runs from 13:40 on Wed 30 May to 13:29 on Thu 31 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/vinayaka-chaturthi?on=1900-06-01", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-06-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5011, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-05-31T13:29:01+01:00", "utc": "1900-05-31T12:29:01Z", "ms": -2195983858991.9854 }, "end": { "local": "1900-06-01T13:57:42+01:00", "utc": "1900-06-01T12:57:42Z", "ms": -2195895737657.1453 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1900-05-31T13:29:01+01:00", "utc": "1900-05-31T12:29:01Z", "ms": -2195983858991.9854 }, "end": { "local": "1900-06-01T13:57:42+01:00", "utc": "1900-06-01T12:57:42Z", "ms": -2195895737657.1453 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-05-31", "window": { "start": { "local": "1900-05-31T11:17:30+01:00", "utc": "1900-05-31T10:17:30Z", "ms": -2195991749859.776 }, "end": { "local": "1900-05-31T12:05:30+01:00", "utc": "1900-05-31T11:05:30Z", "ms": -2195988869859.776 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-06-01", "window": { "start": { "local": "1900-06-01T11:17:38+01:00", "utc": "1900-06-01T10:17:38Z", "ms": -2195905341757.758 }, "end": { "local": "1900-06-01T12:05:38+01:00", "utc": "1900-06-01T11:05:38Z", "ms": -2195902461757.758 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:29 on Thu 31 May to 13:58 on Fri 1 Jun.", "fact": "1900-05-31T12:29:01Z → 1900-06-01T12:57:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:18–12:06 on the 31st, 11:18–12:06 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 0 of 48 minutes on the 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5011 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Budapest, 1900: Friday 1 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": "1900-06-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-06-01", "confidence": "determinate" } ], "quote": "In Budapest, Vināyaka Caturthī 1900 falls on Friday 1 June. Caturthī runs from 13:29 on Thu 31 May to 13:58 on Fri 1 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/vinayaka-chaturthi?on=1900-06-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-06-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10728, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1900-06-02T15:04:35+01:00", "utc": "1900-06-02T14:04:35Z", "ms": -2195805324983.2244 }, "end": { "local": "1900-06-03T16:44:52+01:00", "utc": "1900-06-03T15:44:52Z", "ms": -2195712908370.8484 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1900-06-02T15:04:35+01:00", "utc": "1900-06-02T14:04:35Z", "ms": -2195805324983.2244 }, "end": { "local": "1900-06-03T16:44:52+01:00", "utc": "1900-06-03T15:44:52Z", "ms": -2195712908370.8484 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-06-02", "window": { "start": { "local": "1900-06-02T11:17:47+01:00", "utc": "1900-06-02T10:17:47Z", "ms": -2195818933281.9321 }, "end": { "local": "1900-06-02T12:05:47+01:00", "utc": "1900-06-02T11:05:47Z", "ms": -2195816053281.9321 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-06-03", "window": { "start": { "local": "1900-06-03T11:17:56+01:00", "utc": "1900-06-03T10:17:56Z", "ms": -2195732524450.3232 }, "end": { "local": "1900-06-03T12:05:56+01:00", "utc": "1900-06-03T11:05:56Z", "ms": -2195729644450.3232 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 15:05 on Sat 2 Jun to 16:45 on Sun 3 Jun.", "fact": "1900-06-02T14:04:35Z → 1900-06-03T15:44:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:18–12:06 on the 2nd, 11:18–12:06 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 2nd and 48 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10728 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Budapest, 1900: Sunday 3 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aranya-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-06-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-06-03", "confidence": "determinate" } ], "quote": "In Budapest, Araṇya Gaurī Vrata 1900 falls on Sunday 3 June. Ṣaṣṭhī runs from 15:05 on Sat 2 Jun to 16:45 on Sun 3 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-06-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10728, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1900-06-02T15:04:35+01:00", "utc": "1900-06-02T14:04:35Z", "ms": -2195805324983.2244 }, "end": { "local": "1900-06-03T16:44:52+01:00", "utc": "1900-06-03T15:44:52Z", "ms": -2195712908370.8484 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1900-06-02T15:04:35+01:00", "utc": "1900-06-02T14:04:35Z", "ms": -2195805324983.2244 }, "end": { "local": "1900-06-03T16:44:52+01:00", "utc": "1900-06-03T15:44:52Z", "ms": -2195712908370.8484 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-06-02", "window": { "start": { "local": "1900-06-02T11:17:47+01:00", "utc": "1900-06-02T10:17:47Z", "ms": -2195818933281.9321 }, "end": { "local": "1900-06-02T12:05:47+01:00", "utc": "1900-06-02T11:05:47Z", "ms": -2195816053281.9321 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-06-03", "window": { "start": { "local": "1900-06-03T11:17:56+01:00", "utc": "1900-06-03T10:17:56Z", "ms": -2195732524450.3232 }, "end": { "local": "1900-06-03T12:05:56+01:00", "utc": "1900-06-03T11:05:56Z", "ms": -2195729644450.3232 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 15:05 on Sat 2 Jun to 16:45 on Sun 3 Jun.", "fact": "1900-06-02T14:04:35Z → 1900-06-03T15:44:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:18–12:06 on the 2nd, 11:18–12:06 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 2nd and 48 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 10728 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Budapest, 1900: Sunday 3 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi-jyaishtha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-06-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-06-03", "confidence": "determinate" } ], "quote": "In Budapest, Skanda Ṣaṣṭhī (Jyaiṣṭha) 1900 falls on Sunday 3 June. Ṣaṣṭhī runs from 15:05 on Sat 2 Jun to 16:45 on Sun 3 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-06-08", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-06-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1666, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-06-08T01:35:28+01:00", "utc": "1900-06-08T00:35:28Z", "ms": -2195335471982.9546 }, "end": { "local": "1900-06-09T03:19:29+01:00", "utc": "1900-06-09T02:19:29Z", "ms": -2195242830803.4893 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1900-06-08T01:35:28+01:00", "utc": "1900-06-08T00:35:28Z", "ms": -2195335471982.9546 }, "end": { "local": "1900-06-09T03:19:29+01:00", "utc": "1900-06-09T02:19:29Z", "ms": -2195242830803.4893 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-06-08", "window": { "start": { "local": "1900-06-08T03:47:36+01:00", "utc": "1900-06-08T02:47:36Z", "ms": -2195327543888.211 }, "end": { "local": "1900-06-08T03:47:36+01:00", "utc": "1900-06-08T02:47:36Z", "ms": -2195327543888.211 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-06-09", "window": { "start": { "local": "1900-06-09T03:47:15+01:00", "utc": "1900-06-09T02:47:15Z", "ms": -2195241164754.81 }, "end": { "local": "1900-06-09T03:47:15+01:00", "utc": "1900-06-09T02:47:15Z", "ms": -2195241164754.81 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:35 on Fri 8 Jun to 03:19 on Sat 9 Jun.", "fact": "1900-06-08T00:35:28Z → 1900-06-09T02:19:29Z" }, { "step": "kaala", "text": "Sunrise is at 03:48 on the 8th and 03:47 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 1666 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Budapest, 1900: Friday 8 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": "1900-06-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-06-08", "confidence": "determinate" } ], "quote": "In Budapest, Nirjalā Ekādaśī 1900 falls on Friday 8 June. Ekādaśī runs from 01:35 on Fri 8 Jun to 03:19 on Sat 9 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-06-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-06-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24393, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1900-06-09T03:19:29+01:00", "utc": "1900-06-09T02:19:29Z", "ms": -2195242830803.4893 }, "end": { "local": "1900-06-10T04:32:33+01:00", "utc": "1900-06-10T03:32:33Z", "ms": -2195152047373.7183 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1900-06-09T03:19:29+01:00", "utc": "1900-06-09T02:19:29Z", "ms": -2195242830803.4893 }, "end": { "local": "1900-06-10T04:32:33+01:00", "utc": "1900-06-10T03:32:33Z", "ms": -2195152047373.7183 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-06-09", "window": { "start": { "local": "1900-06-09T11:18:55+01:00", "utc": "1900-06-09T10:18:55Z", "ms": -2195214064989.0342 }, "end": { "local": "1900-06-09T12:06:55+01:00", "utc": "1900-06-09T11:06:55Z", "ms": -2195211184989.0342 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-06-10", "window": { "start": { "local": "1900-06-10T11:19:06+01:00", "utc": "1900-06-10T10:19:06Z", "ms": -2195127654166.1865 }, "end": { "local": "1900-06-10T12:07:06+01:00", "utc": "1900-06-10T11:07:06Z", "ms": -2195124774166.1865 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 03:19 on Sat 9 Jun to 04:33 on Sun 10 Jun.", "fact": "1900-06-09T02:19:29Z → 1900-06-10T03:32:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:19–12:07 on the 9th, 11:19–12:07 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 24393 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Budapest, 1900: Saturday 9 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": "1900-06-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-06-09", "confidence": "determinate" } ], "quote": "In Budapest, Śrī Rāma Dvādaśī 1900 falls on Saturday 9 June. Dvādaśī runs from 03:19 on Sat 9 Jun to 04:33 on Sun 10 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/pradosha-vrata?on=1900-06-10", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-06-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28131, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-06-10T04:32:33+01:00", "utc": "1900-06-10T03:32:33Z", "ms": -2195152047373.7183 }, "end": { "local": "1900-06-11T05:10:19+01:00", "utc": "1900-06-11T04:10:19Z", "ms": -2195063381085.891 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1900-06-10T04:32:33+01:00", "utc": "1900-06-10T03:32:33Z", "ms": -2195152047373.7183 }, "end": { "local": "1900-06-11T05:10:19+01:00", "utc": "1900-06-11T04:10:19Z", "ms": -2195063381085.891 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-06-09", "window": { "start": { "local": "1900-06-09T19:38:35+01:00", "utc": "1900-06-09T18:38:35Z", "ms": -2195184085223.2585 }, "end": { "local": "1900-06-09T20:43:42+01:00", "utc": "1900-06-09T19:43:42Z", "ms": -2195180178270.541 } }, "covered_min": 0, "window_min": 65, "qualifies": false }, { "local_date": "1900-06-10", "window": { "start": { "local": "1900-06-10T19:39:15+01:00", "utc": "1900-06-10T18:39:15Z", "ms": -2195097645254.4958 }, "end": { "local": "1900-06-10T20:44:14+01:00", "utc": "1900-06-10T19:44:14Z", "ms": -2195093745733.695 } }, "covered_min": 65, "window_min": 65, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:33 on Sun 10 Jun to 05:10 on Mon 11 Jun.", "fact": "1900-06-10T03:32:33Z → 1900-06-11T04:10:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:39–20:44 on the 9th, 19:39–20:44 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 65 minutes on the 9th and 65 of 65 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 28131 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Budapest, 1900: Sunday 10 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": "1900-06-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-06-10", "confidence": "determinate" } ], "quote": "In Budapest, Śukla Pradoṣa Vrata 1900 falls on Sunday 10 June. Trayodaśī runs from 04:33 on Sun 10 Jun to 05:10 on Mon 11 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-06-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-06-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28401, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-06-12T05:11:47+01:00", "utc": "1900-06-12T04:11:47Z", "ms": -2194976893435.6558 }, "end": { "local": "1900-06-13T04:38:36+01:00", "utc": "1900-06-13T03:38:36Z", "ms": -2194892484302.1426 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1900-06-12T05:11:47+01:00", "utc": "1900-06-12T04:11:47Z", "ms": -2194976893435.6558 }, "end": { "local": "1900-06-13T04:38:36+01:00", "utc": "1900-06-13T03:38:36Z", "ms": -2194892484302.1426 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-06-11", "window": { "start": { "local": "1900-06-11T19:39:53+01:00", "utc": "1900-06-11T18:39:53Z", "ms": -2195011207410.5967 }, "end": { "local": "1900-06-11T20:44:45+01:00", "utc": "1900-06-11T19:44:45Z", "ms": -2195007314697.1082 } }, "covered_min": 0, "window_min": 65, "qualifies": false }, { "local_date": "1900-06-12", "window": { "start": { "local": "1900-06-12T19:40:28+01:00", "utc": "1900-06-12T18:40:28Z", "ms": -2194924771733.3816 }, "end": { "local": "1900-06-12T20:45:15+01:00", "utc": "1900-06-12T19:45:15Z", "ms": -2194920885196.282 } }, "covered_min": 65, "window_min": 65, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 05:12 on Tue 12 Jun to 04:39 on Wed 13 Jun.", "fact": "1900-06-12T04:11:47Z → 1900-06-13T03:38:36Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:40–20:45 on the 11th, 19:40–20:45 on the 12th.", "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 65 minutes on the 11th and 65 of 65 on the 12th.", "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 28401 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Budapest, 1900: Tuesday 12 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": "1900-06-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-06-12", "confidence": "determinate" } ], "quote": "In Budapest, Vaṭa Sāvitrī Vrata 1900 falls on Tuesday 12 June. Pūrṇimā runs from 05:12 on Tue 12 Jun to 04:39 on Wed 13 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/sankashta-chaturthi?on=1900-06-16", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-06-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 342, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-06-16T00:12:48+01:00", "utc": "1900-06-15T23:12:48Z", "ms": -2194649232455.4065 }, "end": { "local": "1900-06-16T22:06:25+01:00", "utc": "1900-06-16T21:06:25Z", "ms": -2194570415062.96 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-06-16T00:12:48+01:00", "utc": "1900-06-15T23:12:48Z", "ms": -2194649232455.4065 }, "end": { "local": "1900-06-16T22:06:25+01:00", "utc": "1900-06-16T21:06:25Z", "ms": -2194570415062.96 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-06-15", "window": { "start": { "local": "1900-06-15T21:28:18+01:00", "utc": "1900-06-15T20:28:18Z", "ms": -2194659101829.2866 }, "end": { "local": "1900-06-15T21:28:18+01:00", "utc": "1900-06-15T20:28:18Z", "ms": -2194659101829.2866 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-06-16", "window": { "start": { "local": "1900-06-16T22:00:43+01:00", "utc": "1900-06-16T21:00:43Z", "ms": -2194570756956.3308 }, "end": { "local": "1900-06-16T22:00:43+01:00", "utc": "1900-06-16T21:00:43Z", "ms": -2194570756956.3308 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:13 on Sat 16 Jun to 22:06 on Sat 16 Jun.", "fact": "1900-06-15T23:12:48Z → 1900-06-16T21:06:25Z" }, { "step": "kaala", "text": "Moonrise is at 21:28 on the 15th and 22:01 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 342 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Budapest, 1900: Saturday 16 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": "1900-06-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-06-16", "confidence": "boundary" } ], "quote": "In Budapest, Saṅkaṣṭa Caturthī 1900 falls on Saturday 16 June. Caturthī runs from 00:13 on Sat 16 Jun to 22:06 on Sat 16 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/sankashta-chaturthi?on=1900-06-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/ekadashi?on=1900-06-23", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-06-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10619, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-06-22T08:34:07+01:00", "utc": "1900-06-22T07:34:07Z", "ms": -2194100753000.5735 }, "end": { "local": "1900-06-23T06:43:50+01:00", "utc": "1900-06-23T05:43:50Z", "ms": -2194020969536.222 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-06-22T08:34:07+01:00", "utc": "1900-06-22T07:34:07Z", "ms": -2194100753000.5735 }, "end": { "local": "1900-06-23T06:43:50+01:00", "utc": "1900-06-23T05:43:50Z", "ms": -2194020969536.222 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-06-22", "window": { "start": { "local": "1900-06-22T03:46:37+01:00", "utc": "1900-06-22T02:46:37Z", "ms": -2194118003163.5051 }, "end": { "local": "1900-06-22T03:46:37+01:00", "utc": "1900-06-22T02:46:37Z", "ms": -2194118003163.5051 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-06-23", "window": { "start": { "local": "1900-06-23T03:46:52+01:00", "utc": "1900-06-23T02:46:52Z", "ms": -2194031588353.0498 }, "end": { "local": "1900-06-23T03:46:52+01:00", "utc": "1900-06-23T02:46:52Z", "ms": -2194031588353.0498 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:34 on Fri 22 Jun to 06:44 on Sat 23 Jun.", "fact": "1900-06-22T07:34:07Z → 1900-06-23T05:43:50Z" }, { "step": "kaala", "text": "Sunrise is at 03:47 on the 22nd and 03:47 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 10619 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Budapest, 1900: Saturday 23 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": "1900-06-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-06-23", "confidence": "determinate" } ], "quote": "In Budapest, Yoginī Ekādaśī 1900 falls on Saturday 23 June. Ekādaśī runs from 08:34 on Fri 22 Jun to 06:44 on Sat 23 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-06-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-06-24", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-06-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25387, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-06-24T05:08:47+01:00", "utc": "1900-06-24T04:08:47Z", "ms": -2193940272806.8774 }, "end": { "local": "1900-06-25T03:52:05+01:00", "utc": "1900-06-25T02:52:05Z", "ms": -2193858474993.7363 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-06-24T05:08:47+01:00", "utc": "1900-06-24T04:08:47Z", "ms": -2193940272806.8774 }, "end": { "local": "1900-06-25T03:52:05+01:00", "utc": "1900-06-25T02:52:05Z", "ms": -2193858474993.7363 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-06-23", "window": { "start": { "local": "1900-06-23T19:44:27+01:00", "utc": "1900-06-23T18:44:27Z", "ms": -2193974132597.1033 }, "end": { "local": "1900-06-23T20:48:49+01:00", "utc": "1900-06-23T19:48:49Z", "ms": -2193970271063.4412 } }, "covered_min": 0, "window_min": 64, "qualifies": false }, { "local_date": "1900-06-24", "window": { "start": { "local": "1900-06-24T19:44:34+01:00", "utc": "1900-06-24T18:44:34Z", "ms": -2193887725584.9998 }, "end": { "local": "1900-06-24T20:48:58+01:00", "utc": "1900-06-24T19:48:58Z", "ms": -2193883862363.286 } }, "covered_min": 64, "window_min": 64, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:09 on Sun 24 Jun to 03:52 on Mon 25 Jun.", "fact": "1900-06-24T04:08:47Z → 1900-06-25T02:52:05Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:44–20:49 on the 23rd, 19:45–20:49 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 64 minutes on the 23rd and 64 of 64 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 25387 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Budapest, 1900: Sunday 24 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": "1900-06-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-06-24", "confidence": "determinate" } ], "quote": "In Budapest, Kṛṣṇa Pradoṣa Vrata 1900 falls on Sunday 24 June. Trayodaśī runs from 05:09 on Sun 24 Jun to 03:52 on Mon 25 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-06-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/shivaratri?on=1900-06-25", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-06-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10012, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-06-25T03:52:05+01:00", "utc": "1900-06-25T02:52:05Z", "ms": -2193858474993.7363 }, "end": { "local": "1900-06-26T02:57:06+01:00", "utc": "1900-06-26T01:57:06Z", "ms": -2193775373719.216 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-06-25T03:52:05+01:00", "utc": "1900-06-25T02:52:05Z", "ms": -2193858474993.7363 }, "end": { "local": "1900-06-26T02:57:06+01:00", "utc": "1900-06-26T01:57:06Z", "ms": -2193775373719.216 } }, "kaala": "nishita", "days": [ { "local_date": "1900-06-24", "window": { "start": { "local": "1900-06-24T23:22:01+01:00", "utc": "1900-06-24T22:22:01Z", "ms": -2193874678503.5728 }, "end": { "local": "1900-06-25T00:10:01+01:00", "utc": "1900-06-24T23:10:01Z", "ms": -2193871798503.5728 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-06-25", "window": { "start": { "local": "1900-06-25T23:22:15+01:00", "utc": "1900-06-25T22:22:15Z", "ms": -2193788265252.3835 }, "end": { "local": "1900-06-26T00:10:15+01:00", "utc": "1900-06-25T23:10:15Z", "ms": -2193785385252.3835 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 03:52 on Mon 25 Jun to 02:57 on Tue 26 Jun.", "fact": "1900-06-25T02:52:05Z → 1900-06-26T01:57:06Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:22–00:10 on the 24th, 23:22–00:10 on the 25th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10012 s" }, { "step": "ruling", "text": "Śivarātri, Budapest, 1900: Monday 25 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": "1900-06-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-06-25", "confidence": "determinate" } ], "quote": "In Budapest, Śivarātri 1900 falls on Monday 25 June. Caturdaśī runs from 03:52 on Mon 25 Jun to 02:57 on Tue 26 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/budapest/festivals/1900/shivaratri?on=1900-06-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-06-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30435, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1900-06-28T02:26:00+01:00", "utc": "1900-06-28T01:26:00Z", "ms": -2193604439716.3103 }, "end": { "local": "1900-06-29T02:55:35+01:00", "utc": "1900-06-29T01:55:35Z", "ms": -2193516264524.8975 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-06-28T02:26:00+01:00", "utc": "1900-06-28T01:26:00Z", "ms": -2193604439716.3103 }, "end": { "local": "1900-06-29T02:55:35+01:00", "utc": "1900-06-29T01:55:35Z", "ms": -2193516264524.8975 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-06-28", "window": { "start": { "local": "1900-06-28T11:22:39+01:00", "utc": "1900-06-28T10:22:39Z", "ms": -2193572240797.459 }, "end": { "local": "1900-06-28T12:10:39+01:00", "utc": "1900-06-28T11:10:39Z", "ms": -2193569360797.459 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-06-29", "window": { "start": { "local": "1900-06-29T11:22:51+01:00", "utc": "1900-06-29T10:22:51Z", "ms": -2193485829295.727 }, "end": { "local": "1900-06-29T12:10:51+01:00", "utc": "1900-06-29T11:10:51Z", "ms": -2193482949295.727 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 02:26 on Thu 28 Jun to 02:56 on Fri 29 Jun.", "fact": "1900-06-28T01:26:00Z → 1900-06-29T01:55:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 28th, 11:23–12:11 on the 29th.", "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 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 30435 s" }, { "step": "ruling", "text": "Rathayātrā, Budapest, 1900: Thursday 28 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": "1900-06-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-06-28", "confidence": "determinate" } ], "quote": "In Budapest, Rathayātrā 1900 falls on Thursday 28 June. Dvitīyā runs from 02:26 on Thu 28 Jun to 02:56 on Fri 29 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/vinayaka-chaturthi?on=1900-06-30", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-06-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21263, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-06-30T03:57:01+01:00", "utc": "1900-06-30T02:57:01Z", "ms": -2193426179025.974 }, "end": { "local": "1900-07-01T05:28:50+01:00", "utc": "1900-07-01T04:28:50Z", "ms": -2193334270074.3823 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-06-30T03:57:01+01:00", "utc": "1900-06-30T02:57:01Z", "ms": -2193426179025.974 }, "end": { "local": "1900-07-01T05:28:50+01:00", "utc": "1900-07-01T04:28:50Z", "ms": -2193334270074.3823 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-06-30", "window": { "start": { "local": "1900-06-30T11:23:02+01:00", "utc": "1900-06-30T10:23:02Z", "ms": -2193399417999.092 }, "end": { "local": "1900-06-30T12:11:02+01:00", "utc": "1900-06-30T11:11:02Z", "ms": -2193396537999.092 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-07-01", "window": { "start": { "local": "1900-07-01T11:23:13+01:00", "utc": "1900-07-01T10:23:13Z", "ms": -2193313006931.735 }, "end": { "local": "1900-07-01T12:11:13+01:00", "utc": "1900-07-01T11:11:13Z", "ms": -2193310126931.735 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:57 on Sat 30 Jun to 05:29 on Sun 1 Jul.", "fact": "1900-06-30T02:57:01Z → 1900-07-01T04:28:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 30th, 11:23–12:11 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 30th and 0 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21263 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Budapest, 1900: Saturday 30 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": "1900-06-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-06-30", "confidence": "determinate" } ], "quote": "In Budapest, Vināyaka Caturthī 1900 falls on Saturday 30 June. Caturthī runs from 03:57 on Sat 30 Jun to 05:29 on Sun 1 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/vinayaka-chaturthi?on=1900-06-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14215, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1900-07-01T05:28:50+01:00", "utc": "1900-07-01T04:28:50Z", "ms": -2193334270074.3823 }, "end": { "local": "1900-07-02T07:26:29+01:00", "utc": "1900-07-02T06:26:29Z", "ms": -2193240811479.0781 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-07-01T05:28:50+01:00", "utc": "1900-07-01T04:28:50Z", "ms": -2193334270074.3823 }, "end": { "local": "1900-07-02T07:26:29+01:00", "utc": "1900-07-02T06:26:29Z", "ms": -2193240811479.0781 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-07-01", "window": { "start": { "local": "1900-07-01T11:23:13+01:00", "utc": "1900-07-01T10:23:13Z", "ms": -2193313006931.735 }, "end": { "local": "1900-07-01T12:11:13+01:00", "utc": "1900-07-01T11:11:13Z", "ms": -2193310126931.735 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-07-02", "window": { "start": { "local": "1900-07-02T11:23:24+01:00", "utc": "1900-07-02T10:23:24Z", "ms": -2193226596116.8354 }, "end": { "local": "1900-07-02T12:11:24+01:00", "utc": "1900-07-02T11:11:24Z", "ms": -2193223716116.8354 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:29 on Sun 1 Jul to 07:26 on Mon 2 Jul.", "fact": "1900-07-01T04:28:50Z → 1900-07-02T06:26:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:23–12:11 on the 1st, 11:23–12:11 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 14215 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Budapest, 1900: Sunday 1 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Skanda pancami (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-07-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-01", "confidence": "determinate" } ], "quote": "In Budapest, Skanda Pañcamī 1900 falls on Sunday 1 July. Pañcamī runs from 05:29 on Sun 1 Jul to 07:26 on Mon 2 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 465, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1900-07-03T09:41:55+01:00", "utc": "1900-07-03T08:41:55Z", "ms": -2193146285074.0159 }, "end": { "local": "1900-07-04T12:03:59+01:00", "utc": "1900-07-04T11:03:59Z", "ms": -2193051360590.4397 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-07-03T09:41:55+01:00", "utc": "1900-07-03T08:41:55Z", "ms": -2193146285074.0159 }, "end": { "local": "1900-07-04T12:03:59+01:00", "utc": "1900-07-04T11:03:59Z", "ms": -2193051360590.4397 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-07-03", "window": { "start": { "local": "1900-07-03T11:23:34+01:00", "utc": "1900-07-03T10:23:34Z", "ms": -2193140185576.584 }, "end": { "local": "1900-07-03T12:11:34+01:00", "utc": "1900-07-03T11:11:34Z", "ms": -2193137305576.584 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-07-04", "window": { "start": { "local": "1900-07-04T11:23:45+01:00", "utc": "1900-07-04T10:23:45Z", "ms": -2193053775332.205 }, "end": { "local": "1900-07-04T12:11:45+01:00", "utc": "1900-07-04T11:11:45Z", "ms": -2193050895332.205 } }, "covered_min": 40, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Saptamī runs from 09:42 on Tue 3 Jul to 12:04 on Wed 4 Jul.", "fact": "1900-07-03T08:41:55Z → 1900-07-04T11:03:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 3rd, 11:24–12:12 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 3rd and 40 of 48 on the 4th.", "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 465 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Budapest, 1900: Tuesday 3 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vivasvat-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Vivasvat saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-07-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-03", "confidence": "determinate" } ], "quote": "In Budapest, Vivasvat Saptamī 1900 falls on Tuesday 3 July. Saptamī runs from 09:42 on Tue 3 Jul to 12:04 on Wed 4 Jul and covers all of madhyāhna that midday. It also reaches the next midday for 40 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-07-08", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34276, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-07-07T17:39:45+01:00", "utc": "1900-07-07T16:39:45Z", "ms": -2192772014628.8604 }, "end": { "local": "1900-07-08T18:24:38+01:00", "utc": "1900-07-08T17:24:38Z", "ms": -2192682922358.42 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-07-07T17:39:45+01:00", "utc": "1900-07-07T16:39:45Z", "ms": -2192772014628.8604 }, "end": { "local": "1900-07-08T18:24:38+01:00", "utc": "1900-07-08T17:24:38Z", "ms": -2192682922358.42 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-07-08", "window": { "start": { "local": "1900-07-08T03:55:05+01:00", "utc": "1900-07-08T02:55:05Z", "ms": -2192735095075.4504 }, "end": { "local": "1900-07-08T03:55:05+01:00", "utc": "1900-07-08T02:55:05Z", "ms": -2192735095075.4504 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-07-09", "window": { "start": { "local": "1900-07-09T03:55:54+01:00", "utc": "1900-07-09T02:55:54Z", "ms": -2192648646190.4634 }, "end": { "local": "1900-07-09T03:55:54+01:00", "utc": "1900-07-09T02:55:54Z", "ms": -2192648646190.4634 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:40 on Sat 7 Jul to 18:25 on Sun 8 Jul.", "fact": "1900-07-07T16:39:45Z → 1900-07-08T17:24:38Z" }, { "step": "kaala", "text": "Sunrise is at 03:55 on the 8th and 03:56 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 34276 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Budapest, 1900: Sunday 8 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": "1900-07-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-08", "confidence": "determinate" } ], "quote": "In Budapest, Hariśayanī Ekādaśī 1900 falls on Sunday 8 July. Ekādaśī runs from 17:40 on Sat 7 Jul to 18:25 on Sun 8 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-07-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-07-09", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4520, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-07-09T18:25:47+01:00", "utc": "1900-07-09T17:25:47Z", "ms": -2192596452641.5632 }, "end": { "local": "1900-07-10T17:43:07+01:00", "utc": "1900-07-10T16:43:07Z", "ms": -2192512613496.986 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-07-09T18:25:47+01:00", "utc": "1900-07-09T17:25:47Z", "ms": -2192596452641.5632 }, "end": { "local": "1900-07-10T17:43:07+01:00", "utc": "1900-07-10T16:43:07Z", "ms": -2192512613496.986 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-07-09", "window": { "start": { "local": "1900-07-09T19:41:08+01:00", "utc": "1900-07-09T18:41:08Z", "ms": -2192591932253.4543 }, "end": { "local": "1900-07-09T20:47:13+01:00", "utc": "1900-07-09T19:47:13Z", "ms": -2192587967364.9304 } }, "covered_min": 66, "window_min": 66, "qualifies": true }, { "local_date": "1900-07-10", "window": { "start": { "local": "1900-07-10T19:40:33+01:00", "utc": "1900-07-10T18:40:33Z", "ms": -2192505566694.0688 }, "end": { "local": "1900-07-10T20:46:50+01:00", "utc": "1900-07-10T19:46:50Z", "ms": -2192501590244.7434 } }, "covered_min": 0, "window_min": 66, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:26 on Mon 9 Jul to 17:43 on Tue 10 Jul.", "fact": "1900-07-09T17:25:47Z → 1900-07-10T16:43:07Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:41–20:47 on the 9th, 19:41–20:47 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 66 of 66 minutes on the 9th and 0 of 66 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 4520 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Budapest, 1900: Monday 9 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": "1900-07-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-09", "confidence": "determinate" } ], "quote": "In Budapest, Śukla Pradoṣa Vrata 1900 falls on Monday 9 July. Trayodaśī runs from 18:26 on Mon 9 Jul to 17:43 on Tue 10 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-07-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 696, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-07-11T16:19:52+01:00", "utc": "1900-07-11T15:19:52Z", "ms": -2192431208049.131 }, "end": { "local": "1900-07-12T14:21:54+01:00", "utc": "1900-07-12T13:21:54Z", "ms": -2192351886181.9646 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-07-11T16:19:52+01:00", "utc": "1900-07-11T15:19:52Z", "ms": -2192431208049.131 }, "end": { "local": "1900-07-12T14:21:54+01:00", "utc": "1900-07-12T13:21:54Z", "ms": -2192351886181.9646 } }, "kaala": "sayahna", "days": [ { "local_date": "1900-07-11", "window": { "start": { "local": "1900-07-11T16:31:28+01:00", "utc": "1900-07-11T15:31:28Z", "ms": -2192430511567.9636 }, "end": { "local": "1900-07-11T19:39:56+01:00", "utc": "1900-07-11T18:39:56Z", "ms": -2192419203628.9224 } }, "covered_min": 188, "window_min": 188, "qualifies": true }, { "local_date": "1900-07-12", "window": { "start": { "local": "1900-07-12T16:31:08+01:00", "utc": "1900-07-12T15:31:08Z", "ms": -2192344132314.2532 }, "end": { "local": "1900-07-12T19:39:17+01:00", "utc": "1900-07-12T18:39:17Z", "ms": -2192332843031.5442 } }, "covered_min": 0, "window_min": 188, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:20 on Wed 11 Jul to 14:22 on Thu 12 Jul.", "fact": "1900-07-11T15:19:52Z → 1900-07-12T13:21:54Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:31–19:40 on the 11th, 16:31–19:39 on the 12th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 188 of 188 minutes on the 11th and 0 of 188 on the 12th.", "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 696 s" }, { "step": "ruling", "text": "Kokilā Vrata, Budapest, 1900: Wednesday 11 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": "1900-07-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-11", "confidence": "determinate" } ], "quote": "In Budapest, Kokilā Vrata 1900 falls on Wednesday 11 July. Pūrṇimā runs from 16:20 on Wed 11 Jul to 14:22 on Thu 12 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12004, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-07-11T16:19:52+01:00", "utc": "1900-07-11T15:19:52Z", "ms": -2192431208049.131 }, "end": { "local": "1900-07-12T14:21:54+01:00", "utc": "1900-07-12T13:21:54Z", "ms": -2192351886181.9646 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-07-11T16:19:52+01:00", "utc": "1900-07-11T15:19:52Z", "ms": -2192431208049.131 }, "end": { "local": "1900-07-12T14:21:54+01:00", "utc": "1900-07-12T13:21:54Z", "ms": -2192351886181.9646 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-07-11", "window": { "start": { "local": "1900-07-11T19:39:56+01:00", "utc": "1900-07-11T18:39:56Z", "ms": -2192419203628.9224 }, "end": { "local": "1900-07-11T20:46:25+01:00", "utc": "1900-07-11T19:46:25Z", "ms": -2192415215071.078 } }, "covered_min": 66, "window_min": 66, "qualifies": true }, { "local_date": "1900-07-12", "window": { "start": { "local": "1900-07-12T19:39:17+01:00", "utc": "1900-07-12T18:39:17Z", "ms": -2192332843031.5442 }, "end": { "local": "1900-07-12T20:45:58+01:00", "utc": "1900-07-12T19:45:58Z", "ms": -2192328841827.6519 } }, "covered_min": 0, "window_min": 67, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:20 on Wed 11 Jul to 14:22 on Thu 12 Jul.", "fact": "1900-07-11T15:19:52Z → 1900-07-12T13:21:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:40–20:46 on the 11th, 19:39–20:46 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 66 of 66 minutes on the 11th and 0 of 67 on the 12th.", "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 12004 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Budapest, 1900: Wednesday 11 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": "1900-07-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-11", "confidence": "determinate" } ], "quote": "In Budapest, Śiva Śayanotsava 1900 falls on Wednesday 11 July. Pūrṇimā runs from 16:20 on Wed 11 Jul to 14:22 on Thu 12 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26114, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-07-11T16:19:52+01:00", "utc": "1900-07-11T15:19:52Z", "ms": -2192431208049.131 }, "end": { "local": "1900-07-12T14:21:54+01:00", "utc": "1900-07-12T13:21:54Z", "ms": -2192351886181.9646 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-07-11T16:19:52+01:00", "utc": "1900-07-11T15:19:52Z", "ms": -2192431208049.131 }, "end": { "local": "1900-07-12T14:21:54+01:00", "utc": "1900-07-12T13:21:54Z", "ms": -2192351886181.9646 } }, "kaala": "udaya-3", "days": [ { "local_date": "1900-07-11", "window": { "start": { "local": "1900-07-11T03:57:37+01:00", "utc": "1900-07-11T02:57:37Z", "ms": -2192475743324.1282 }, "end": { "local": "1900-07-11T07:06:05+01:00", "utc": "1900-07-11T06:06:05Z", "ms": -2192464435385.087 } }, "covered_min": 0, "window_min": 188, "qualifies": false }, { "local_date": "1900-07-12", "window": { "start": { "local": "1900-07-12T03:58:31+01:00", "utc": "1900-07-12T02:58:31Z", "ms": -2192389289445.089 }, "end": { "local": "1900-07-12T07:06:40+01:00", "utc": "1900-07-12T06:06:40Z", "ms": -2192378000162.3801 } }, "covered_min": 188, "window_min": 188, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:20 on Wed 11 Jul to 14:22 on Thu 12 Jul.", "fact": "1900-07-11T15:19:52Z → 1900-07-12T13:21:54Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 03:58–07:06 on the 11th, 03:59–07:07 on the 12th.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must hold through the first three muhūrtas after sunrise. It covers 0 of 188 minutes on the 11th and 188 of 188 on the 12th.", "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 26114 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Budapest, 1900: Thursday 12 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": "1900-07-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-12", "confidence": "determinate" } ], "quote": "In Budapest, Vyāsa Pūjā 1900 falls on Thursday 12 July. Pūrṇimā runs from 16:20 on Wed 11 Jul to 14:22 on Thu 12 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7740, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-07-11T16:19:52+01:00", "utc": "1900-07-11T15:19:52Z", "ms": -2192431208049.131 }, "end": { "local": "1900-07-12T14:21:54+01:00", "utc": "1900-07-12T13:21:54Z", "ms": -2192351886181.9646 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1900-07-11T16:19:52+01:00", "utc": "1900-07-11T15:19:52Z", "ms": -2192431208049.131 }, "end": { "local": "1900-07-12T14:21:54+01:00", "utc": "1900-07-12T13:21:54Z", "ms": -2192351886181.9646 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-07-11", "window": { "start": { "local": "1900-07-11T11:24:47+01:00", "utc": "1900-07-11T10:24:47Z", "ms": -2192448913476.5254 }, "end": { "local": "1900-07-11T12:12:47+01:00", "utc": "1900-07-11T11:12:47Z", "ms": -2192446033476.5254 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-07-12", "window": { "start": { "local": "1900-07-12T11:24:54+01:00", "utc": "1900-07-12T10:24:54Z", "ms": -2192362506238.3167 }, "end": { "local": "1900-07-12T12:12:54+01:00", "utc": "1900-07-12T11:12:54Z", "ms": -2192359626238.3167 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 16:20 on Wed 11 Jul to 14:22 on Thu 12 Jul.", "fact": "1900-07-11T15:19:52Z → 1900-07-12T13:21:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 11th, 11:25–12:13 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 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7740 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Budapest, 1900: Thursday 12 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": "1900-07-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-12", "confidence": "determinate" } ], "quote": "In Budapest, Guru Pūrṇimā 1900 falls on Thursday 12 July. Pūrṇimā runs from 16:20 on Wed 11 Jul to 14:22 on Thu 12 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29064, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1900-07-13T11:56:43+01:00", "utc": "1900-07-13T10:56:43Z", "ms": -2192274197462.8794 }, "end": { "local": "1900-07-14T09:12:42+01:00", "utc": "1900-07-14T08:12:42Z", "ms": -2192197637994.706 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1900-07-13T11:56:43+01:00", "utc": "1900-07-13T10:56:43Z", "ms": -2192274197462.8794 }, "end": { "local": "1900-07-14T09:12:42+01:00", "utc": "1900-07-14T08:12:42Z", "ms": -2192197637994.706 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-07-13", "window": { "start": { "local": "1900-07-13T20:01:07+01:00", "utc": "1900-07-13T19:01:07Z", "ms": -2192245133331.6616 }, "end": { "local": "1900-07-13T20:01:07+01:00", "utc": "1900-07-13T19:01:07Z", "ms": -2192245133331.6616 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-07-14", "window": { "start": { "local": "1900-07-14T20:31:57+01:00", "utc": "1900-07-14T19:31:57Z", "ms": -2192156883043.3083 }, "end": { "local": "1900-07-14T20:31:57+01:00", "utc": "1900-07-14T19:31:57Z", "ms": -2192156883043.3083 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 11:57 on Fri 13 Jul to 09:13 on Sat 14 Jul.", "fact": "1900-07-13T10:56:43Z → 1900-07-14T08:12:42Z" }, { "step": "kaala", "text": "Moonrise is at 20:01 on the 13th and 20:32 on the 14th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā 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. 102" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29064 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Budapest, 1900: Friday 13 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": "1900-07-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-13", "confidence": "determinate" } ], "quote": "In Budapest, Aśūnya Śayana Vrata (Āṣāḍha) 1900 falls on Friday 13 July. Dvitīyā runs from 11:57 on Fri 13 Jul to 09:13 on Sat 14 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/sankashta-chaturthi?on=1900-07-15", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22965, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-07-15T06:18:31+01:00", "utc": "1900-07-15T05:18:31Z", "ms": -2192121689293.8342 }, "end": { "local": "1900-07-16T03:22:30+01:00", "utc": "1900-07-16T02:22:30Z", "ms": -2192045850199.171 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1900-07-15T06:18:31+01:00", "utc": "1900-07-15T05:18:31Z", "ms": -2192121689293.8342 }, "end": { "local": "1900-07-16T03:22:30+01:00", "utc": "1900-07-16T02:22:30Z", "ms": -2192045850199.171 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-07-14", "window": { "start": { "local": "1900-07-14T20:31:57+01:00", "utc": "1900-07-14T19:31:57Z", "ms": -2192156883043.3083 }, "end": { "local": "1900-07-14T20:31:57+01:00", "utc": "1900-07-14T19:31:57Z", "ms": -2192156883043.3083 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-07-15", "window": { "start": { "local": "1900-07-15T20:59:45+01:00", "utc": "1900-07-15T19:59:45Z", "ms": -2192068814743.5256 }, "end": { "local": "1900-07-15T20:59:45+01:00", "utc": "1900-07-15T19:59:45Z", "ms": -2192068814743.5256 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:19 on Sun 15 Jul to 03:22 on Mon 16 Jul.", "fact": "1900-07-15T05:18:31Z → 1900-07-16T02:22:30Z" }, { "step": "kaala", "text": "Moonrise is at 20:32 on the 14th and 21:00 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 22965 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Budapest, 1900: Sunday 15 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": "1900-07-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-15", "confidence": "determinate" } ], "quote": "In Budapest, Saṅkaṣṭa Caturthī 1900 falls on Sunday 15 July. Caturthī runs from 06:19 on Sun 15 Jul to 03:22 on Mon 16 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/sankashta-chaturthi?on=1900-07-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/ekadashi?on=1900-07-22", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35361, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-07-21T14:46:13+01:00", "utc": "1900-07-21T13:46:13Z", "ms": -2191572827339.518 }, "end": { "local": "1900-07-22T13:58:08+01:00", "utc": "1900-07-22T12:58:08Z", "ms": -2191489312213.4297 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1900-07-21T14:46:13+01:00", "utc": "1900-07-21T13:46:13Z", "ms": -2191572827339.518 }, "end": { "local": "1900-07-22T13:58:08+01:00", "utc": "1900-07-22T12:58:08Z", "ms": -2191489312213.4297 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-07-21", "window": { "start": { "local": "1900-07-21T04:07:40+01:00", "utc": "1900-07-21T03:07:40Z", "ms": -2191611140121.373 }, "end": { "local": "1900-07-21T04:07:40+01:00", "utc": "1900-07-21T03:07:40Z", "ms": -2191611140121.373 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-07-22", "window": { "start": { "local": "1900-07-22T04:08:47+01:00", "utc": "1900-07-22T03:08:47Z", "ms": -2191524672880.3271 }, "end": { "local": "1900-07-22T04:08:47+01:00", "utc": "1900-07-22T03:08:47Z", "ms": -2191524672880.3271 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:46 on Sat 21 Jul to 13:58 on Sun 22 Jul.", "fact": "1900-07-21T13:46:13Z → 1900-07-22T12:58:08Z" }, { "step": "kaala", "text": "Sunrise is at 04:08 on the 21st and 04:09 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 35361 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Budapest, 1900: Sunday 22 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": "1900-07-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-22", "confidence": "determinate" } ], "quote": "In Budapest, Kāmikā Ekādaśī 1900 falls on Sunday 22 July. Ekādaśī runs from 14:46 on Sat 21 Jul to 13:58 on Sun 22 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-07-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-07-23", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21326, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-07-23T13:33:47+01:00", "utc": "1900-07-23T12:33:47Z", "ms": -2191404373150.1814 }, "end": { "local": "1900-07-24T13:32:57+01:00", "utc": "1900-07-24T12:32:57Z", "ms": -2191318023037.3499 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1900-07-23T13:33:47+01:00", "utc": "1900-07-23T12:33:47Z", "ms": -2191404373150.1814 }, "end": { "local": "1900-07-24T13:32:57+01:00", "utc": "1900-07-24T12:32:57Z", "ms": -2191318023037.3499 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-07-23", "window": { "start": { "local": "1900-07-23T19:29:29+01:00", "utc": "1900-07-23T18:29:29Z", "ms": -2191383030533.8328 }, "end": { "local": "1900-07-23T20:39:02+01:00", "utc": "1900-07-23T19:39:02Z", "ms": -2191378857841.9863 } }, "covered_min": 70, "window_min": 70, "qualifies": true }, { "local_date": "1900-07-24", "window": { "start": { "local": "1900-07-24T19:28:23+01:00", "utc": "1900-07-24T18:28:23Z", "ms": -2191296697072.63 }, "end": { "local": "1900-07-24T20:38:14+01:00", "utc": "1900-07-24T19:38:14Z", "ms": -2191292506151.5796 } }, "covered_min": 0, "window_min": 70, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:34 on Mon 23 Jul to 13:33 on Tue 24 Jul.", "fact": "1900-07-23T12:33:47Z → 1900-07-24T12:32:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:29–20:39 on the 23rd, 19:28–20:38 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 70 of 70 minutes on the 23rd and 0 of 70 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 21326 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Budapest, 1900: Monday 23 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": "1900-07-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-23", "confidence": "determinate" } ], "quote": "In Budapest, Kṛṣṇa Pradoṣa Vrata 1900 falls on Monday 23 July. Trayodaśī runs from 13:34 on Mon 23 Jul to 13:33 on Tue 24 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-07-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/shivaratri?on=1900-07-24", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34233, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-07-24T13:32:57+01:00", "utc": "1900-07-24T12:32:57Z", "ms": -2191318023037.3499 }, "end": { "local": "1900-07-25T13:55:48+01:00", "utc": "1900-07-25T12:55:48Z", "ms": -2191230252486.2483 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1900-07-24T13:32:57+01:00", "utc": "1900-07-24T12:32:57Z", "ms": -2191318023037.3499 }, "end": { "local": "1900-07-25T13:55:48+01:00", "utc": "1900-07-25T12:55:48Z", "ms": -2191230252486.2483 } }, "kaala": "nishita", "days": [ { "local_date": "1900-07-24", "window": { "start": { "local": "1900-07-24T23:26:19+01:00", "utc": "1900-07-24T22:26:19Z", "ms": -2191282421118.6914 }, "end": { "local": "1900-07-25T00:14:19+01:00", "utc": "1900-07-24T23:14:19Z", "ms": -2191279541118.6914 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-07-25", "window": { "start": { "local": "1900-07-25T23:26:20+01:00", "utc": "1900-07-25T22:26:20Z", "ms": -2191196019882.1836 }, "end": { "local": "1900-07-26T00:14:20+01:00", "utc": "1900-07-25T23:14:20Z", "ms": -2191193139882.1836 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:33 on Tue 24 Jul to 13:56 on Wed 25 Jul.", "fact": "1900-07-24T12:32:57Z → 1900-07-25T12:55:48Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:26–00:14 on the 24th, 23:26–00:14 on the 25th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34233 s" }, { "step": "ruling", "text": "Śivarātri, Budapest, 1900: Tuesday 24 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": "1900-07-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-24", "confidence": "determinate" } ], "quote": "In Budapest, Śivarātri 1900 falls on Tuesday 24 July. Caturdaśī runs from 13:33 on Tue 24 Jul to 13:56 on Wed 25 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/budapest/festivals/1900/shivaratri?on=1900-07-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18991, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1900-07-28T17:30:15+01:00", "utc": "1900-07-28T16:30:15Z", "ms": -2190958184972.6482 }, "end": { "local": "1900-07-29T19:28:25+01:00", "utc": "1900-07-29T18:28:25Z", "ms": -2190864695002.53 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1900-07-28T17:30:15+01:00", "utc": "1900-07-28T16:30:15Z", "ms": -2190958184972.6482 }, "end": { "local": "1900-07-29T19:28:25+01:00", "utc": "1900-07-29T18:28:25Z", "ms": -2190864695002.53 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-07-28", "window": { "start": { "local": "1900-07-28T11:25:44+01:00", "utc": "1900-07-28T10:25:44Z", "ms": -2190980056429.4885 }, "end": { "local": "1900-07-28T12:13:44+01:00", "utc": "1900-07-28T11:13:44Z", "ms": -2190977176429.4885 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-07-29", "window": { "start": { "local": "1900-07-29T11:25:42+01:00", "utc": "1900-07-29T10:25:42Z", "ms": -2190893657940.9878 }, "end": { "local": "1900-07-29T12:13:42+01:00", "utc": "1900-07-29T11:13:42Z", "ms": -2190890777940.9878 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 17:30 on Sat 28 Jul to 19:28 on Sun 29 Jul.", "fact": "1900-07-28T16:30:15Z → 1900-07-29T18:28:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 28th, 11:26–12:14 on the 29th.", "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 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: paraviddha → only-day · margin 18991 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Budapest, 1900: Sunday 29 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": "1900-07-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-29", "confidence": "determinate" } ], "quote": "In Budapest, Madhusravā Tṛtīyā (Hariyali Teej) 1900 falls on Sunday 29 July. Tṛtīyā runs from 17:30 on Sat 28 Jul to 19:28 on Sun 29 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/vinayaka-chaturthi?on=1900-07-30", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26083, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-07-29T19:28:25+01:00", "utc": "1900-07-29T18:28:25Z", "ms": -2190864695002.53 }, "end": { "local": "1900-07-30T21:44:23+01:00", "utc": "1900-07-30T20:44:23Z", "ms": -2190770137179.2007 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1900-07-29T19:28:25+01:00", "utc": "1900-07-29T18:28:25Z", "ms": -2190864695002.53 }, "end": { "local": "1900-07-30T21:44:23+01:00", "utc": "1900-07-30T20:44:23Z", "ms": -2190770137179.2007 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-07-29", "window": { "start": { "local": "1900-07-29T11:25:42+01:00", "utc": "1900-07-29T10:25:42Z", "ms": -2190893657940.9878 }, "end": { "local": "1900-07-29T12:13:42+01:00", "utc": "1900-07-29T11:13:42Z", "ms": -2190890777940.9878 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-07-30", "window": { "start": { "local": "1900-07-30T11:25:40+01:00", "utc": "1900-07-30T10:25:40Z", "ms": -2190807260047.8638 }, "end": { "local": "1900-07-30T12:13:40+01:00", "utc": "1900-07-30T11:13:40Z", "ms": -2190804380047.8638 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:28 on Sun 29 Jul to 21:44 on Mon 30 Jul.", "fact": "1900-07-29T18:28:25Z → 1900-07-30T20:44:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 29th, 11:26–12:14 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 29th and 48 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26083 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Budapest, 1900: Monday 30 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": "1900-07-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-30", "confidence": "determinate" } ], "quote": "In Budapest, Vināyaka Caturthī 1900 falls on Monday 30 July. Caturthī runs from 19:28 on Sun 29 Jul to 21:44 on Mon 30 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/vinayaka-chaturthi?on=1900-07-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-07-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34243, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1900-07-30T21:44:23+01:00", "utc": "1900-07-30T20:44:23Z", "ms": -2190770137179.2007 }, "end": { "local": "1900-08-01T00:10:31+01:00", "utc": "1900-07-31T23:10:31Z", "ms": -2190674968917.4187 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1900-07-30T21:44:23+01:00", "utc": "1900-07-30T20:44:23Z", "ms": -2190770137179.2007 }, "end": { "local": "1900-08-01T00:10:31+01:00", "utc": "1900-07-31T23:10:31Z", "ms": -2190674968917.4187 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-07-30", "window": { "start": { "local": "1900-07-30T11:25:40+01:00", "utc": "1900-07-30T10:25:40Z", "ms": -2190807260047.8638 }, "end": { "local": "1900-07-30T12:13:40+01:00", "utc": "1900-07-30T11:13:40Z", "ms": -2190804380047.8638 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-07-31", "window": { "start": { "local": "1900-07-31T11:25:37+01:00", "utc": "1900-07-31T10:25:37Z", "ms": -2190720862754.4395 }, "end": { "local": "1900-07-31T12:13:37+01:00", "utc": "1900-07-31T11:13:37Z", "ms": -2190717982754.4395 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 21:44 on Mon 30 Jul to 00:11 on Wed 1 Aug.", "fact": "1900-07-30T20:44:23Z → 1900-07-31T23:10:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 30th, 11:26–12:14 on the 31st.", "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 30th and 48 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34243 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Budapest, 1900: Tuesday 31 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": "1900-07-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-07-31", "confidence": "determinate" } ], "quote": "In Budapest, Nāga Pañcamī 1900 falls on Tuesday 31 July. Pañcamī runs from 21:44 on Mon 30 Jul to 00:11 on Wed 1 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-08-07", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11251, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-08-06T08:04:03+01:00", "utc": "1900-08-06T07:04:03Z", "ms": -2190214556515.3003 }, "end": { "local": "1900-08-07T07:35:59+01:00", "utc": "1900-08-07T06:35:59Z", "ms": -2190129841044.792 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1900-08-06T08:04:03+01:00", "utc": "1900-08-06T07:04:03Z", "ms": -2190214556515.3003 }, "end": { "local": "1900-08-07T07:35:59+01:00", "utc": "1900-08-07T06:35:59Z", "ms": -2190129841044.792 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-08-06", "window": { "start": { "local": "1900-08-06T04:27:10+01:00", "utc": "1900-08-06T03:27:10Z", "ms": -2190227569603.2266 }, "end": { "local": "1900-08-06T04:27:10+01:00", "utc": "1900-08-06T03:27:10Z", "ms": -2190227569603.2266 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-08-07", "window": { "start": { "local": "1900-08-07T04:28:28+01:00", "utc": "1900-08-07T03:28:28Z", "ms": -2190141091862.3945 }, "end": { "local": "1900-08-07T04:28:28+01:00", "utc": "1900-08-07T03:28:28Z", "ms": -2190141091862.3945 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:04 on Mon 6 Aug to 07:36 on Tue 7 Aug.", "fact": "1900-08-06T07:04:03Z → 1900-08-07T06:35:59Z" }, { "step": "kaala", "text": "Sunrise is at 04:27 on the 6th and 04:28 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 11251 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Budapest, 1900: Tuesday 7 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": "1900-08-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-07", "confidence": "determinate" } ], "quote": "In Budapest, Putradā Ekādaśī 1900 falls on Tuesday 7 August. Ekādaśī runs from 08:04 on Mon 6 Aug to 07:36 on Tue 7 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-08-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13742, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1900-08-07T07:35:59+01:00", "utc": "1900-08-07T06:35:59Z", "ms": -2190129841044.792 }, "end": { "local": "1900-08-08T06:18:43+01:00", "utc": "1900-08-08T05:18:43Z", "ms": -2190048076946.373 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1900-08-07T07:35:59+01:00", "utc": "1900-08-07T06:35:59Z", "ms": -2190129841044.792 }, "end": { "local": "1900-08-08T06:18:43+01:00", "utc": "1900-08-08T05:18:43Z", "ms": -2190048076946.373 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-08-07", "window": { "start": { "local": "1900-08-07T11:25:01+01:00", "utc": "1900-08-07T10:25:01Z", "ms": -2190116098603.9165 }, "end": { "local": "1900-08-07T12:13:01+01:00", "utc": "1900-08-07T11:13:01Z", "ms": -2190113218603.9165 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-08-08", "window": { "start": { "local": "1900-08-08T11:24:54+01:00", "utc": "1900-08-08T10:24:54Z", "ms": -2190029706119.148 }, "end": { "local": "1900-08-08T12:12:54+01:00", "utc": "1900-08-08T11:12:54Z", "ms": -2190026826119.148 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 07:36 on Tue 7 Aug to 06:19 on Wed 8 Aug.", "fact": "1900-08-07T06:35:59Z → 1900-08-08T05:18:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 7th, 11:25–12:13 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 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: purvaviddha → only-day · margin 13742 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Budapest, 1900: Tuesday 7 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": "1900-08-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-07", "confidence": "determinate" } ], "quote": "In Budapest, Dāmodara Dvādaśī 1900 falls on Tuesday 7 August. Dvādaśī runs from 07:36 on Tue 7 Aug to 06:19 on Wed 8 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/pradosha-vrata?on=1900-08-08", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28418, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-08-08T06:18:43+01:00", "utc": "1900-08-08T05:18:43Z", "ms": -2190048076946.373 }, "end": { "local": "1900-08-09T04:16:44+01:00", "utc": "1900-08-09T03:16:44Z", "ms": -2189968995574.3542 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1900-08-08T06:18:43+01:00", "utc": "1900-08-08T05:18:43Z", "ms": -2190048076946.373 }, "end": { "local": "1900-08-09T04:16:44+01:00", "utc": "1900-08-09T03:16:44Z", "ms": -2189968995574.3542 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-08-07", "window": { "start": { "local": "1900-08-07T19:09:35+01:00", "utc": "1900-08-07T18:09:35Z", "ms": -2190088225345.4382 }, "end": { "local": "1900-08-07T20:24:16+01:00", "utc": "1900-08-07T19:24:16Z", "ms": -2190083743807.7646 } }, "covered_min": 0, "window_min": 75, "qualifies": false }, { "local_date": "1900-08-08", "window": { "start": { "local": "1900-08-08T19:08:02+01:00", "utc": "1900-08-08T18:08:02Z", "ms": -2190001918425.4087 }, "end": { "local": "1900-08-08T20:23:06+01:00", "utc": "1900-08-08T19:23:06Z", "ms": -2189997414032.9333 } }, "covered_min": 75, "window_min": 75, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:19 on Wed 8 Aug to 04:17 on Thu 9 Aug.", "fact": "1900-08-08T05:18:43Z → 1900-08-09T03:16:44Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:10–20:24 on the 7th, 19:08–20:23 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 0 of 75 minutes on the 7th and 75 of 75 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 28418 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Budapest, 1900: Wednesday 8 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": "1900-08-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-08", "confidence": "determinate" } ], "quote": "In Budapest, Śukla Pradoṣa Vrata 1900 falls on Wednesday 8 August. Trayodaśī runs from 06:19 on Wed 8 Aug to 04:17 on Thu 9 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-08-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21826, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-08-10T01:37:24+01:00", "utc": "1900-08-10T00:37:24Z", "ms": -2189892156160.11 }, "end": { "local": "1900-08-10T22:29:56+01:00", "utc": "1900-08-10T21:29:56Z", "ms": -2189817004204.1924 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "1900-08-10T12:06:33+01:00", "utc": "1900-08-10T11:06:33Z", "ms": -2189854406884.4695 }, "end": { "local": "1900-08-10T22:29:56+01:00", "utc": "1900-08-10T21:29:56Z", "ms": -2189817004204.1924 } }, "kaala": "day", "days": [ { "local_date": "1900-08-10", "window": { "start": { "local": "1900-08-10T04:32:23+01:00", "utc": "1900-08-10T03:32:23Z", "ms": -2189881656893.2788 }, "end": { "local": "1900-08-11T04:33:42+01:00", "utc": "1900-08-11T03:33:42Z", "ms": -2189795178068.0728 } }, "covered_min": 623, "window_min": 1441, "qualifies": true }, { "local_date": "1900-08-11", "window": { "start": { "local": "1900-08-11T04:33:42+01:00", "utc": "1900-08-11T03:33:42Z", "ms": -2189795178068.0728 }, "end": { "local": "1900-08-12T04:35:01+01:00", "utc": "1900-08-12T03:35:01Z", "ms": -2189708699024.3503 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:37 on Fri 10 Aug to 22:30 on Fri 10 Aug. Its second half begins at 12:07 on Fri 10 Aug.", "fact": "1900-08-10T00:37:24Z → 1900-08-10T21:29:56Z · second half from 1900-08-10T11:06:33Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 04:32 on the 10th, and from 04:34 on the 11th.", "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 623 of 1441 minutes on the 10th and 0 of 1441 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one day qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21826 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Budapest, 1900: Friday 10 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "raksha-bandhana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "day", "priority": "unstated", "when_absent": "unstated", "half": "second" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-08-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-10", "confidence": "determinate" } ], "quote": "In Budapest, Rakṣā Bandhana (Rakhi) 1900 falls on Friday 10 August. The second half of Pūrṇimā runs from 12:07 on Fri 10 Aug to 22:30 on Fri 10 Aug and lies within that day, sunrise to sunrise.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35233, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-08-10T01:37:24+01:00", "utc": "1900-08-10T00:37:24Z", "ms": -2189892156160.11 }, "end": { "local": "1900-08-10T22:29:56+01:00", "utc": "1900-08-10T21:29:56Z", "ms": -2189817004204.1924 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1900-08-10T01:37:24+01:00", "utc": "1900-08-10T00:37:24Z", "ms": -2189892156160.11 }, "end": { "local": "1900-08-10T22:29:56+01:00", "utc": "1900-08-10T21:29:56Z", "ms": -2189817004204.1924 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-08-10", "window": { "start": { "local": "1900-08-10T11:24:37+01:00", "utc": "1900-08-10T10:24:37Z", "ms": -2189856922890.3308 }, "end": { "local": "1900-08-10T12:12:37+01:00", "utc": "1900-08-10T11:12:37Z", "ms": -2189854042890.3308 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-08-11", "window": { "start": { "local": "1900-08-11T11:24:28+01:00", "utc": "1900-08-11T10:24:28Z", "ms": -2189770532127.2659 }, "end": { "local": "1900-08-11T12:12:28+01:00", "utc": "1900-08-11T11:12:28Z", "ms": -2189767652127.2659 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:37 on Fri 10 Aug to 22:30 on Fri 10 Aug.", "fact": "1900-08-10T00:37:24Z → 1900-08-10T21:29:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 10th, 11:24–12:12 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 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: unstated → only-day · margin 35233 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Budapest, 1900: Friday 10 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": "1900-08-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-10", "confidence": "determinate" } ], "quote": "In Budapest, Ṛṣi Tarpaṇa 1900 falls on Friday 10 August. Pūrṇimā runs from 01:37 on Fri 10 Aug to 22:30 on Fri 10 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-11", "confidence": "boundary", "boundary_reasons": [ "margin", "absent-unstated" ], "boundary_margin_s": 263, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1900-08-11T19:04:37+01:00", "utc": "1900-08-11T18:04:37Z", "ms": -2189742922585.6272 }, "end": { "local": "1900-08-12T15:32:07+01:00", "utc": "1900-08-12T14:32:07Z", "ms": -2189669273247.295 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-11T19:04:37+01:00", "utc": "1900-08-11T18:04:37Z", "ms": -2189742922585.6272 }, "end": { "local": "1900-08-12T15:32:07+01:00", "utc": "1900-08-12T14:32:07Z", "ms": -2189669273247.295 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-08-11", "window": { "start": { "local": "1900-08-11T19:00:14+01:00", "utc": "1900-08-11T18:00:14Z", "ms": -2189743185851.0889 }, "end": { "local": "1900-08-11T19:00:14+01:00", "utc": "1900-08-11T18:00:14Z", "ms": -2189743185851.0889 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-08-12", "window": { "start": { "local": "1900-08-12T19:28:16+01:00", "utc": "1900-08-12T18:28:16Z", "ms": -2189655104395.4277 }, "end": { "local": "1900-08-12T19:28:16+01:00", "utc": "1900-08-12T18:28:16Z", "ms": -2189655104395.4277 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 19:05 on Sat 11 Aug to 15:32 on Sun 12 Aug.", "fact": "1900-08-11T18:04:37Z → 1900-08-12T14:32:07Z" }, { "step": "kaala", "text": "Moonrise is at 19:00 on the 11th and 19:28 on the 12th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 11th and is not on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 263 s < 300 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Budapest, 1900: Saturday 11 August.", "fact": "confidence: boundary (margin, absent-unstated)" } ], "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": "1900-08-11", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-11", "confidence": "boundary" } ], "quote": "In Budapest, Aśūnya Śayana Vrata 1900 falls on Saturday 11 August. Dvitīyā runs from 19:05 on Sat 11 Aug to 15:32 on Sun 12 Aug, and is current at moonrise on neither day. It is 4 min 23 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 559, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1900-08-12T15:32:07+01:00", "utc": "1900-08-12T14:32:07Z", "ms": -2189669273247.295 }, "end": { "local": "1900-08-13T12:02:48+01:00", "utc": "1900-08-13T11:02:48Z", "ms": -2189595431545.6057 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-12T15:32:07+01:00", "utc": "1900-08-12T14:32:07Z", "ms": -2189669273247.295 }, "end": { "local": "1900-08-13T12:02:48+01:00", "utc": "1900-08-13T11:02:48Z", "ms": -2189595431545.6057 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-08-12", "window": { "start": { "local": "1900-08-12T11:24:18+01:00", "utc": "1900-08-12T10:24:18Z", "ms": -2189684141916.8726 }, "end": { "local": "1900-08-12T12:12:18+01:00", "utc": "1900-08-12T11:12:18Z", "ms": -2189681261916.8726 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-08-13", "window": { "start": { "local": "1900-08-13T11:24:08+01:00", "utc": "1900-08-13T10:24:08Z", "ms": -2189597752246.8096 }, "end": { "local": "1900-08-13T12:12:08+01:00", "utc": "1900-08-13T11:12:08Z", "ms": -2189594872246.8096 } }, "covered_min": 39, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 15:32 on Sun 12 Aug to 12:03 on Mon 13 Aug.", "fact": "1900-08-12T14:32:07Z → 1900-08-13T11:02:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 12th, 11:24–12:12 on the 13th.", "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 12th and 39 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 559 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Budapest, 1900: Monday 13 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": "1900-08-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-13", "confidence": "determinate" } ], "quote": "In Budapest, Kajjalī Tṛtīyā (Kajari Teej) 1900 falls on Monday 13 August. Tṛtīyā runs from 15:32 on Sun 12 Aug to 12:03 on Mon 13 Aug and covers 39 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14664, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-08-13T12:02:48+01:00", "utc": "1900-08-13T11:02:48Z", "ms": -2189595431545.6057 }, "end": { "local": "1900-08-14T08:46:23+01:00", "utc": "1900-08-14T07:46:23Z", "ms": -2189520816716.102 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-13T12:02:48+01:00", "utc": "1900-08-13T11:02:48Z", "ms": -2189595431545.6057 }, "end": { "local": "1900-08-14T08:46:23+01:00", "utc": "1900-08-14T07:46:23Z", "ms": -2189520816716.102 } }, "kaala": "sayahna", "days": [ { "local_date": "1900-08-13", "window": { "start": { "local": "1900-08-13T16:07:12+01:00", "utc": "1900-08-13T15:07:12Z", "ms": -2189580767727.9302 }, "end": { "local": "1900-08-13T18:59:55+01:00", "utc": "1900-08-13T17:59:55Z", "ms": -2189570404715.3438 } }, "covered_min": 173, "window_min": 173, "qualifies": true }, { "local_date": "1900-08-14", "window": { "start": { "local": "1900-08-14T16:06:07+01:00", "utc": "1900-08-14T15:06:07Z", "ms": -2189494432759.9607 }, "end": { "local": "1900-08-14T18:58:14+01:00", "utc": "1900-08-14T17:58:14Z", "ms": -2189484105863.6711 } }, "covered_min": 0, "window_min": 172, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:03 on Mon 13 Aug to 08:46 on Tue 14 Aug.", "fact": "1900-08-13T11:02:48Z → 1900-08-14T07:46:23Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:07–19:00 on the 13th, 16:06–18:58 on the 14th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 173 of 173 minutes on the 13th and 0 of 172 on the 14th.", "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 14664 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Budapest, 1900: Monday 13 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": "1900-08-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-13", "confidence": "determinate" } ], "quote": "In Budapest, Bahulā Caturthī 1900 falls on Monday 13 August. Caturthī runs from 12:03 on Mon 13 Aug to 08:46 on Tue 14 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/sankashta-chaturthi?on=1900-08-13", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28384, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-08-13T12:02:48+01:00", "utc": "1900-08-13T11:02:48Z", "ms": -2189595431545.6057 }, "end": { "local": "1900-08-14T08:46:23+01:00", "utc": "1900-08-14T07:46:23Z", "ms": -2189520816716.102 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-13T12:02:48+01:00", "utc": "1900-08-13T11:02:48Z", "ms": -2189595431545.6057 }, "end": { "local": "1900-08-14T08:46:23+01:00", "utc": "1900-08-14T07:46:23Z", "ms": -2189520816716.102 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-08-13", "window": { "start": { "local": "1900-08-13T19:55:53+01:00", "utc": "1900-08-13T18:55:53Z", "ms": -2189567047198.9436 }, "end": { "local": "1900-08-13T19:55:53+01:00", "utc": "1900-08-13T18:55:53Z", "ms": -2189567047198.9436 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-08-14", "window": { "start": { "local": "1900-08-14T20:24:41+01:00", "utc": "1900-08-14T19:24:41Z", "ms": -2189478918984.9395 }, "end": { "local": "1900-08-14T20:24:41+01:00", "utc": "1900-08-14T19:24:41Z", "ms": -2189478918984.9395 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:03 on Mon 13 Aug to 08:46 on Tue 14 Aug.", "fact": "1900-08-13T11:02:48Z → 1900-08-14T07:46:23Z" }, { "step": "kaala", "text": "Moonrise is at 19:56 on the 13th and 20:25 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 28384 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Budapest, 1900: Monday 13 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": "1900-08-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-13", "confidence": "determinate" } ], "quote": "In Budapest, Saṅkaṣṭa Caturthī 1900 falls on Monday 13 August. Caturthī runs from 12:03 on Mon 13 Aug to 08:46 on Tue 14 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/sankashta-chaturthi?on=1900-08-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19947, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1900-08-15T05:51:19+01:00", "utc": "1900-08-15T04:51:19Z", "ms": -2189444921100.8105 }, "end": { "local": "1900-08-16T03:24:22+01:00", "utc": "1900-08-16T02:24:22Z", "ms": -2189367338425.1475 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-15T05:51:19+01:00", "utc": "1900-08-15T04:51:19Z", "ms": -2189444921100.8105 }, "end": { "local": "1900-08-16T03:24:22+01:00", "utc": "1900-08-16T02:24:22Z", "ms": -2189367338425.1475 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-08-15", "window": { "start": { "local": "1900-08-15T11:23:46+01:00", "utc": "1900-08-15T10:23:46Z", "ms": -2189424974477.1372 }, "end": { "local": "1900-08-15T12:11:46+01:00", "utc": "1900-08-15T11:11:46Z", "ms": -2189422094477.1372 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-08-16", "window": { "start": { "local": "1900-08-16T11:23:34+01:00", "utc": "1900-08-16T10:23:34Z", "ms": -2189338586353.139 }, "end": { "local": "1900-08-16T12:11:34+01:00", "utc": "1900-08-16T11:11:34Z", "ms": -2189335706353.139 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 05:51 on Wed 15 Aug to 03:24 on Thu 16 Aug.", "fact": "1900-08-15T04:51:19Z → 1900-08-16T02:24:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 15th, 11:24–12:12 on the 16th.", "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 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19947 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Budapest, 1900: Wednesday 15 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": "1900-08-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-15", "confidence": "determinate" } ], "quote": "In Budapest, Hala Ṣaṣṭhī 1900 falls on Wednesday 15 August. Ṣaṣṭhī runs from 05:51 on Wed 15 Aug to 03:24 on Thu 16 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28752, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "1900-08-16T03:24:22+01:00", "utc": "1900-08-16T02:24:22Z", "ms": -2189367338425.1475 }, "end": { "local": "1900-08-17T01:30:12+01:00", "utc": "1900-08-17T00:30:12Z", "ms": -2189287788155.8142 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-16T03:24:22+01:00", "utc": "1900-08-16T02:24:22Z", "ms": -2189367338425.1475 }, "end": { "local": "1900-08-17T01:30:12+01:00", "utc": "1900-08-17T00:30:12Z", "ms": -2189287788155.8142 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-08-16", "window": { "start": { "local": "1900-08-16T11:23:34+01:00", "utc": "1900-08-16T10:23:34Z", "ms": -2189338586353.139 }, "end": { "local": "1900-08-16T12:11:34+01:00", "utc": "1900-08-16T11:11:34Z", "ms": -2189335706353.139 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-08-17", "window": { "start": { "local": "1900-08-17T11:23:21+01:00", "utc": "1900-08-17T10:23:21Z", "ms": -2189252198721.2935 }, "end": { "local": "1900-08-17T12:11:21+01:00", "utc": "1900-08-17T11:11:21Z", "ms": -2189249318721.2935 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 03:24 on Thu 16 Aug to 01:30 on Fri 17 Aug.", "fact": "1900-08-16T02:24:22Z → 1900-08-17T00:30:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 16th, 11:23–12:11 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 28752 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Budapest, 1900: Thursday 16 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": "1900-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-16", "confidence": "determinate" } ], "quote": "In Budapest, Śītalā Saptamī 1900 falls on Thursday 16 August. Saptamī runs from 03:24 on Thu 16 Aug to 01:30 on Fri 17 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-17", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 51, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1900-08-17T01:30:12+01:00", "utc": "1900-08-17T00:30:12Z", "ms": -2189287788155.8142 }, "end": { "local": "1900-08-18T00:11:10+01:00", "utc": "1900-08-17T23:11:10Z", "ms": -2189206129969.5918 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-17T01:30:12+01:00", "utc": "1900-08-17T00:30:12Z", "ms": -2189287788155.8142 }, "end": { "local": "1900-08-18T00:11:10+01:00", "utc": "1900-08-17T23:11:10Z", "ms": -2189206129969.5918 } }, "kaala": "nishita", "days": [ { "local_date": "1900-08-16", "window": { "start": { "local": "1900-08-16T23:24:14+01:00", "utc": "1900-08-16T22:24:14Z", "ms": -2189295346403.5889 }, "end": { "local": "1900-08-17T00:12:14+01:00", "utc": "1900-08-16T23:12:14Z", "ms": -2189292466403.5889 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-08-17", "window": { "start": { "local": "1900-08-17T23:24:01+01:00", "utc": "1900-08-17T22:24:01Z", "ms": -2189208958711.2285 }, "end": { "local": "1900-08-18T00:12:01+01:00", "utc": "1900-08-17T23:12:01Z", "ms": -2189206078711.2285 } }, "covered_min": 47, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 01:30 on Fri 17 Aug to 00:11 on Sat 18 Aug.", "fact": "1900-08-17T00:30:12Z → 1900-08-17T23:11:10Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:24–00:12 on the 16th, 23:24–00:12 on the 17th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during niśītha. It covers 0 of 48 minutes on the 16th and 47 of 48 on the 17th.", "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 51 s < 300 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Budapest, 1900: Friday 17 August.", "fact": "confidence: boundary (margin)" } ], "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": "1900-08-17", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-17", "confidence": "boundary" } ], "quote": "In Budapest, Janmāṣṭamī 1900 falls on Friday 17 August. Aṣṭamī runs from 01:30 on Fri 17 Aug to 00:11 on Sat 18 Aug and covers 47 of 48 minutes of niśītha that night. It is 0 min 51 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-08-20", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18636, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-08-19T23:16:45+01:00", "utc": "1900-08-19T22:16:45Z", "ms": -2189036594979.5833 }, "end": { "local": "1900-08-20T23:36:23+01:00", "utc": "1900-08-20T22:36:23Z", "ms": -2188949016652.7297 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-19T23:16:45+01:00", "utc": "1900-08-19T22:16:45Z", "ms": -2189036594979.5833 }, "end": { "local": "1900-08-20T23:36:23+01:00", "utc": "1900-08-20T22:36:23Z", "ms": -2188949016652.7297 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-08-20", "window": { "start": { "local": "1900-08-20T04:45:39+01:00", "utc": "1900-08-20T03:45:39Z", "ms": -2189016860728.0715 }, "end": { "local": "1900-08-20T04:45:39+01:00", "utc": "1900-08-20T03:45:39Z", "ms": -2189016860728.0715 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-08-21", "window": { "start": { "local": "1900-08-21T04:47:00+01:00", "utc": "1900-08-21T03:47:00Z", "ms": -2188930380450.1633 }, "end": { "local": "1900-08-21T04:47:00+01:00", "utc": "1900-08-21T03:47:00Z", "ms": -2188930380450.1633 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 23:17 on Sun 19 Aug to 23:36 on Mon 20 Aug.", "fact": "1900-08-19T22:16:45Z → 1900-08-20T22:36:23Z" }, { "step": "kaala", "text": "Sunrise is at 04:46 on the 20th and 04:47 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 18636 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Budapest, 1900: Monday 20 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": "1900-08-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-20", "confidence": "determinate" } ], "quote": "In Budapest, Ajā Ekādaśī 1900 falls on Monday 20 August. Ekādaśī runs from 23:17 on Sun 19 Aug to 23:36 on Mon 20 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-08-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-08-22", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15389, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-08-22T00:22:43+01:00", "utc": "1900-08-21T23:22:43Z", "ms": -2188859837391.4902 }, "end": { "local": "1900-08-23T01:32:29+01:00", "utc": "1900-08-23T00:32:29Z", "ms": -2188769251199.8586 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-22T00:22:43+01:00", "utc": "1900-08-21T23:22:43Z", "ms": -2188859837391.4902 }, "end": { "local": "1900-08-23T01:32:29+01:00", "utc": "1900-08-23T00:32:29Z", "ms": -2188769251199.8586 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-08-21", "window": { "start": { "local": "1900-08-21T18:45:55+01:00", "utc": "1900-08-21T17:45:55Z", "ms": -2188880045381.93 }, "end": { "local": "1900-08-21T20:06:14+01:00", "utc": "1900-08-21T19:06:14Z", "ms": -2188875226013.6042 } }, "covered_min": 0, "window_min": 80, "qualifies": false }, { "local_date": "1900-08-22", "window": { "start": { "local": "1900-08-22T18:44:05+01:00", "utc": "1900-08-22T17:44:05Z", "ms": -2188793755077.1245 }, "end": { "local": "1900-08-22T20:04:50+01:00", "utc": "1900-08-22T19:04:50Z", "ms": -2188788910366.9753 } }, "covered_min": 81, "window_min": 81, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:23 on Wed 22 Aug to 01:32 on Thu 23 Aug.", "fact": "1900-08-21T23:22:43Z → 1900-08-23T00:32:29Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:46–20:06 on the 21st, 18:44–20:05 on the 22nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 80 minutes on the 21st and 81 of 81 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 15389 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Budapest, 1900: Wednesday 22 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": "1900-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-22", "confidence": "determinate" } ], "quote": "In Budapest, Kṛṣṇa Pradoṣa Vrata 1900 falls on Wednesday 22 August. Trayodaśī runs from 00:23 on Wed 22 Aug to 01:32 on Thu 23 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-08-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19659, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-08-23T01:32:29+01:00", "utc": "1900-08-23T00:32:29Z", "ms": -2188769251199.8586 }, "end": { "local": "1900-08-24T03:03:06+01:00", "utc": "1900-08-24T02:03:06Z", "ms": -2188677413660.6814 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-23T01:32:29+01:00", "utc": "1900-08-23T00:32:29Z", "ms": -2188769251199.8586 }, "end": { "local": "1900-08-24T03:03:06+01:00", "utc": "1900-08-24T02:03:06Z", "ms": -2188677413660.6814 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-08-22", "window": { "start": { "local": "1900-08-22T18:44:05+01:00", "utc": "1900-08-22T17:44:05Z", "ms": -2188793755077.1245 }, "end": { "local": "1900-08-22T20:04:50+01:00", "utc": "1900-08-22T19:04:50Z", "ms": -2188788910366.9753 } }, "covered_min": 0, "window_min": 81, "qualifies": false }, { "local_date": "1900-08-23", "window": { "start": { "local": "1900-08-23T18:42:14+01:00", "utc": "1900-08-23T17:42:14Z", "ms": -2188707465679.5505 }, "end": { "local": "1900-08-23T20:03:24+01:00", "utc": "1900-08-23T19:03:24Z", "ms": -2188702595503.404 } }, "covered_min": 81, "window_min": 81, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:32 on Thu 23 Aug to 03:03 on Fri 24 Aug.", "fact": "1900-08-23T00:32:29Z → 1900-08-24T02:03:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:44–20:05 on the 22nd, 18:42–20:03 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 0 of 81 minutes on the 22nd and 81 of 81 on the 23rd.", "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 19659 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Budapest, 1900: Thursday 23 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": "1900-08-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-23", "confidence": "determinate" } ], "quote": "In Budapest, Aghora Caturdaśī 1900 falls on Thursday 23 August. Caturdaśī runs from 01:32 on Thu 23 Aug to 03:03 on Fri 24 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/shivaratri?on=1900-08-23", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4896, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-08-23T01:32:29+01:00", "utc": "1900-08-23T00:32:29Z", "ms": -2188769251199.8586 }, "end": { "local": "1900-08-24T03:03:06+01:00", "utc": "1900-08-24T02:03:06Z", "ms": -2188677413660.6814 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-23T01:32:29+01:00", "utc": "1900-08-23T00:32:29Z", "ms": -2188769251199.8586 }, "end": { "local": "1900-08-24T03:03:06+01:00", "utc": "1900-08-24T02:03:06Z", "ms": -2188677413660.6814 } }, "kaala": "nishita", "days": [ { "local_date": "1900-08-22", "window": { "start": { "local": "1900-08-22T23:22:53+01:00", "utc": "1900-08-22T22:22:53Z", "ms": -2188777027414.0654 }, "end": { "local": "1900-08-23T00:10:53+01:00", "utc": "1900-08-22T23:10:53Z", "ms": -2188774147414.0654 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-08-23", "window": { "start": { "local": "1900-08-23T23:22:37+01:00", "utc": "1900-08-23T22:22:37Z", "ms": -2188690642519.0015 }, "end": { "local": "1900-08-24T00:10:37+01:00", "utc": "1900-08-23T23:10:37Z", "ms": -2188687762519.0015 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:32 on Thu 23 Aug to 03:03 on Fri 24 Aug.", "fact": "1900-08-23T00:32:29Z → 1900-08-24T02:03:06Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:23–00:11 on the 22nd, 23:23–00:11 on the 23rd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 22nd and 48 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4896 s" }, { "step": "ruling", "text": "Śivarātri, Budapest, 1900: Thursday 23 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": "1900-08-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-23", "confidence": "determinate" } ], "quote": "In Budapest, Śivarātri 1900 falls on Thursday 23 August. Caturdaśī runs from 01:32 on Thu 23 Aug to 03:03 on Fri 24 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/budapest/festivals/1900/shivaratri?on=1900-08-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15745, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1900-08-25T04:52:32+01:00", "utc": "1900-08-25T03:52:32Z", "ms": -2188584447651.1235 }, "end": { "local": "1900-08-26T06:58:45+01:00", "utc": "1900-08-26T05:58:45Z", "ms": -2188490475381.4841 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-25T04:52:32+01:00", "utc": "1900-08-25T03:52:32Z", "ms": -2188584447651.1235 }, "end": { "local": "1900-08-26T06:58:45+01:00", "utc": "1900-08-26T05:58:45Z", "ms": -2188490475381.4841 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-08-25", "window": { "start": { "local": "1900-08-25T11:21:26+01:00", "utc": "1900-08-25T10:21:26Z", "ms": -2188561114213.9019 }, "end": { "local": "1900-08-25T12:09:26+01:00", "utc": "1900-08-25T11:09:26Z", "ms": -2188558234213.9019 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-08-26", "window": { "start": { "local": "1900-08-26T11:21:09+01:00", "utc": "1900-08-26T10:21:09Z", "ms": -2188474730574.6785 }, "end": { "local": "1900-08-26T12:09:09+01:00", "utc": "1900-08-26T11:09:09Z", "ms": -2188471850574.6785 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 04:53 on Sat 25 Aug to 06:59 on Sun 26 Aug.", "fact": "1900-08-25T03:52:32Z → 1900-08-26T05:58:45Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 25th, 11:21–12:09 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 15745 s" }, { "step": "ruling", "text": "Rudra Vrata, Budapest, 1900: Saturday 25 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": "1900-08-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-25", "confidence": "determinate" } ], "quote": "In Budapest, Rudra Vrata 1900 falls on Saturday 25 August. Pratipadā runs from 04:53 on Sat 25 Aug to 06:59 on Sun 26 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1221, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-08-28T11:48:15+01:00", "utc": "1900-08-28T10:48:15Z", "ms": -2188300305282.9448 }, "end": { "local": "1900-08-29T14:19:52+01:00", "utc": "1900-08-29T13:19:52Z", "ms": -2188204808453.9778 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-28T11:48:15+01:00", "utc": "1900-08-28T10:48:15Z", "ms": -2188300305282.9448 }, "end": { "local": "1900-08-29T14:19:52+01:00", "utc": "1900-08-29T13:19:52Z", "ms": -2188204808453.9778 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-08-28", "window": { "start": { "local": "1900-08-28T11:20:36+01:00", "utc": "1900-08-28T10:20:36Z", "ms": -2188301964462.852 }, "end": { "local": "1900-08-28T12:08:36+01:00", "utc": "1900-08-28T11:08:36Z", "ms": -2188299084462.852 } }, "covered_min": 20, "window_min": 48, "qualifies": true }, { "local_date": "1900-08-29", "window": { "start": { "local": "1900-08-29T11:20:18+01:00", "utc": "1900-08-29T10:20:18Z", "ms": -2188215581965.911 }, "end": { "local": "1900-08-29T12:08:18+01:00", "utc": "1900-08-29T11:08:18Z", "ms": -2188212701965.911 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:48 on Tue 28 Aug to 14:20 on Wed 29 Aug.", "fact": "1900-08-28T10:48:15Z → 1900-08-29T13:19:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 28th, 11:20–12:08 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 20 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": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 1221 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Budapest, 1900: Tuesday 28 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": "1900-08-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-28", "confidence": "determinate" } ], "quote": "In Budapest, Gaṇeśa Caturthī 1900 falls on Tuesday 28 August. Caturthī runs from 11:48 on Tue 28 Aug to 14:20 on Wed 29 Aug and covers 20 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/budapest/festivals/1900/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": "/budapest/festivals/1900/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1221, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1900-08-27T09:18:51+01:00", "utc": "1900-08-27T08:18:51Z", "ms": -2188395668883.9087 }, "end": { "local": "1900-08-28T11:48:15+01:00", "utc": "1900-08-28T10:48:15Z", "ms": -2188300305282.9448 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-27T09:18:51+01:00", "utc": "1900-08-27T08:18:51Z", "ms": -2188395668883.9087 }, "end": { "local": "1900-08-28T11:48:15+01:00", "utc": "1900-08-28T10:48:15Z", "ms": -2188300305282.9448 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-08-27", "window": { "start": { "local": "1900-08-27T11:20:53+01:00", "utc": "1900-08-27T10:20:53Z", "ms": -2188388347328.2798 }, "end": { "local": "1900-08-27T12:08:53+01:00", "utc": "1900-08-27T11:08:53Z", "ms": -2188385467328.2798 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-08-28", "window": { "start": { "local": "1900-08-28T11:20:36+01:00", "utc": "1900-08-28T10:20:36Z", "ms": -2188301964462.852 }, "end": { "local": "1900-08-28T12:08:36+01:00", "utc": "1900-08-28T11:08:36Z", "ms": -2188299084462.852 } }, "covered_min": 28, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 09:19 on Mon 27 Aug to 11:48 on Tue 28 Aug.", "fact": "1900-08-27T08:18:51Z → 1900-08-28T10:48:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 27th, 11:21–12:09 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 48 of 48 minutes on the 27th and 28 of 48 on the 28th.", "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 1221 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Budapest, 1900: Tuesday 28 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": "1900-08-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-28", "confidence": "determinate" } ], "quote": "In Budapest, Haritālikā Vrata (Hartalika Teej) 1900 falls on Tuesday 28 August. Tṛtīyā runs from 09:19 on Mon 27 Aug to 11:48 on Tue 28 Aug and covers 28 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7894, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1900-08-29T14:19:52+01:00", "utc": "1900-08-29T13:19:52Z", "ms": -2188204808453.9778 }, "end": { "local": "1900-08-30T16:44:03+01:00", "utc": "1900-08-30T15:44:03Z", "ms": -2188109756912.4094 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-29T14:19:52+01:00", "utc": "1900-08-29T13:19:52Z", "ms": -2188204808453.9778 }, "end": { "local": "1900-08-30T16:44:03+01:00", "utc": "1900-08-30T15:44:03Z", "ms": -2188109756912.4094 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-08-29", "window": { "start": { "local": "1900-08-29T11:20:18+01:00", "utc": "1900-08-29T10:20:18Z", "ms": -2188215581965.911 }, "end": { "local": "1900-08-29T12:08:18+01:00", "utc": "1900-08-29T11:08:18Z", "ms": -2188212701965.911 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-08-30", "window": { "start": { "local": "1900-08-30T11:20:00+01:00", "utc": "1900-08-30T10:20:00Z", "ms": -2188129199824.3247 }, "end": { "local": "1900-08-30T12:08:00+01:00", "utc": "1900-08-30T11:08:00Z", "ms": -2188126319824.3247 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 14:20 on Wed 29 Aug to 16:44 on Thu 30 Aug.", "fact": "1900-08-29T13:19:52Z → 1900-08-30T15:44:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:20–12:08 on the 29th, 11:20–12:08 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 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: disputed → only-day · margin 7894 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Budapest, 1900: Thursday 30 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": "1900-08-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-30", "confidence": "determinate" } ], "quote": "In Budapest, Ṛṣi Pañcamī 1900 falls on Thursday 30 August. Pañcamī runs from 14:20 on Wed 29 Aug to 16:44 on Thu 30 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-08-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16563, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1900-08-30T16:44:03+01:00", "utc": "1900-08-30T15:44:03Z", "ms": -2188109756912.4094 }, "end": { "local": "1900-08-31T18:49:17+01:00", "utc": "1900-08-31T17:49:17Z", "ms": -2188015843305.1045 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-30T16:44:03+01:00", "utc": "1900-08-30T15:44:03Z", "ms": -2188109756912.4094 }, "end": { "local": "1900-08-31T18:49:17+01:00", "utc": "1900-08-31T17:49:17Z", "ms": -2188015843305.1045 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-08-30", "window": { "start": { "local": "1900-08-30T11:20:00+01:00", "utc": "1900-08-30T10:20:00Z", "ms": -2188129199824.3247 }, "end": { "local": "1900-08-30T12:08:00+01:00", "utc": "1900-08-30T11:08:00Z", "ms": -2188126319824.3247 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-08-31", "window": { "start": { "local": "1900-08-31T11:19:42+01:00", "utc": "1900-08-31T10:19:42Z", "ms": -2188042818024.3066 }, "end": { "local": "1900-08-31T12:07:42+01:00", "utc": "1900-08-31T11:07:42Z", "ms": -2188039938024.3066 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 16:44 on Thu 30 Aug to 18:49 on Fri 31 Aug.", "fact": "1900-08-30T15:44:03Z → 1900-08-31T17:49:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:20–12:08 on the 30th, 11:20–12:08 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. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16563 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Budapest, 1900: Friday 31 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": "1900-08-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-08-31", "confidence": "determinate" } ], "quote": "In Budapest, Sūrya Ṣaṣṭhī (Bhādrapada) 1900 falls on Friday 31 August. Ṣaṣṭhī runs from 16:44 on Thu 30 Aug to 18:49 on Fri 31 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24095, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1900-08-31T18:49:17+01:00", "utc": "1900-08-31T17:49:17Z", "ms": -2188015843305.1045 }, "end": { "local": "1900-09-01T20:23:33+01:00", "utc": "1900-09-01T19:23:33Z", "ms": -2187923786559.2854 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-08-31T18:49:17+01:00", "utc": "1900-08-31T17:49:17Z", "ms": -2188015843305.1045 }, "end": { "local": "1900-09-01T20:23:33+01:00", "utc": "1900-09-01T19:23:33Z", "ms": -2187923786559.2854 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-08-31", "window": { "start": { "local": "1900-08-31T11:19:42+01:00", "utc": "1900-08-31T10:19:42Z", "ms": -2188042818024.3066 }, "end": { "local": "1900-08-31T12:07:42+01:00", "utc": "1900-08-31T11:07:42Z", "ms": -2188039938024.3066 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-09-01", "window": { "start": { "local": "1900-09-01T11:19:23+01:00", "utc": "1900-09-01T10:19:23Z", "ms": -2187956436551.398 }, "end": { "local": "1900-09-01T12:07:23+01:00", "utc": "1900-09-01T11:07:23Z", "ms": -2187953556551.398 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 18:49 on Fri 31 Aug to 20:24 on Sat 1 Sep.", "fact": "1900-08-31T17:49:17Z → 1900-09-01T19:23:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:20–12:08 on the 31st, 11:19–12:07 on the 1st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 24095 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Budapest, 1900: Saturday 1 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "muktabharana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Muktabharana vrata (purvaviddha), Lalita saptami (Bengal & Orissa)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-09-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-01", "confidence": "determinate" } ], "quote": "In Budapest, Muktābharaṇa Vrata 1900 falls on Saturday 1 September. Saptamī runs from 18:49 on Fri 31 Aug to 20:24 on Sat 1 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29770, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1900-09-01T20:23:33+01:00", "utc": "1900-09-01T19:23:33Z", "ms": -2187923786559.2854 }, "end": { "local": "1900-09-02T21:16:21+01:00", "utc": "1900-09-02T20:16:21Z", "ms": -2187834218786.5012 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-09-01T20:23:33+01:00", "utc": "1900-09-01T19:23:33Z", "ms": -2187923786559.2854 }, "end": { "local": "1900-09-02T21:16:21+01:00", "utc": "1900-09-02T20:16:21Z", "ms": -2187834218786.5012 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-09-01", "window": { "start": { "local": "1900-09-01T11:19:23+01:00", "utc": "1900-09-01T10:19:23Z", "ms": -2187956436551.398 }, "end": { "local": "1900-09-01T12:07:23+01:00", "utc": "1900-09-01T11:07:23Z", "ms": -2187953556551.398 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-09-02", "window": { "start": { "local": "1900-09-02T11:19:05+01:00", "utc": "1900-09-02T10:19:05Z", "ms": -2187870055390.4373 }, "end": { "local": "1900-09-02T12:07:05+01:00", "utc": "1900-09-02T11:07:05Z", "ms": -2187867175390.4373 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 20:24 on Sat 1 Sep to 21:16 on Sun 2 Sep.", "fact": "1900-09-01T19:23:33Z → 1900-09-02T20:16:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:19–12:07 on the 1st, 11:19–12:07 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29770 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Budapest, 1900: Sunday 2 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "radhashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Durvastami (purvaviddha — S 8 of saura Bhadra except Bengal), Mahalaksmi vratarambha, Radhastami (madhyahna vyapini)" } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-02", "confidence": "determinate" } ], "quote": "In Budapest, Rādhāṣṭamī 1900 falls on Sunday 2 September. Aṣṭamī runs from 20:24 on Sat 1 Sep to 21:16 on Sun 2 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-09-05", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30893, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-09-04T20:32:11+01:00", "utc": "1900-09-04T19:32:11Z", "ms": -2187664068970.9138 }, "end": { "local": "1900-09-05T18:53:12+01:00", "utc": "1900-09-05T17:53:12Z", "ms": -2187583608401.2402 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-09-04T20:32:11+01:00", "utc": "1900-09-04T19:32:11Z", "ms": -2187664068970.9138 }, "end": { "local": "1900-09-05T18:53:12+01:00", "utc": "1900-09-05T17:53:12Z", "ms": -2187583608401.2402 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-09-05", "window": { "start": { "local": "1900-09-05T05:07:04+01:00", "utc": "1900-09-05T04:07:04Z", "ms": -2187633175908.358 }, "end": { "local": "1900-09-05T05:07:04+01:00", "utc": "1900-09-05T04:07:04Z", "ms": -2187633175908.358 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-09-06", "window": { "start": { "local": "1900-09-06T05:08:24+01:00", "utc": "1900-09-06T04:08:24Z", "ms": -2187546695827.5706 }, "end": { "local": "1900-09-06T05:08:24+01:00", "utc": "1900-09-06T04:08:24Z", "ms": -2187546695827.5706 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:32 on Tue 4 Sep to 18:53 on Wed 5 Sep.", "fact": "1900-09-04T19:32:11Z → 1900-09-05T17:53:12Z" }, { "step": "kaala", "text": "Sunrise is at 05:07 on the 5th and 05:08 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 30893 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Budapest, 1900: Wednesday 5 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": "1900-09-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-05", "confidence": "determinate" } ], "quote": "In Budapest, Parivartanī Ekādaśī 1900 falls on Wednesday 5 September. Ekādaśī runs from 20:32 on Tue 4 Sep to 18:53 on Wed 5 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-09-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15751, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1900-09-05T18:53:12+01:00", "utc": "1900-09-05T17:53:12Z", "ms": -2187583608401.2402 }, "end": { "local": "1900-09-06T16:28:18+01:00", "utc": "1900-09-06T15:28:18Z", "ms": -2187505902064.435 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-09-05T18:53:12+01:00", "utc": "1900-09-05T17:53:12Z", "ms": -2187583608401.2402 }, "end": { "local": "1900-09-06T16:28:18+01:00", "utc": "1900-09-06T15:28:18Z", "ms": -2187505902064.435 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-09-05", "window": { "start": { "local": "1900-09-05T11:18:06+01:00", "utc": "1900-09-05T10:18:06Z", "ms": -2187610913615.4678 }, "end": { "local": "1900-09-05T12:06:06+01:00", "utc": "1900-09-05T11:06:06Z", "ms": -2187608033615.4678 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-09-06", "window": { "start": { "local": "1900-09-06T11:17:46+01:00", "utc": "1900-09-06T10:17:46Z", "ms": -2187524533533.6426 }, "end": { "local": "1900-09-06T12:05:46+01:00", "utc": "1900-09-06T11:05:46Z", "ms": -2187521653533.6426 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 18:53 on Wed 5 Sep to 16:28 on Thu 6 Sep.", "fact": "1900-09-05T17:53:12Z → 1900-09-06T15:28:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:18–12:06 on the 5th, 11:18–12:06 on the 6th.", "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 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15751 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Budapest, 1900: Thursday 6 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": "1900-09-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-06", "confidence": "determinate" } ], "quote": "In Budapest, Vāmana Jayantī 1900 falls on Thursday 6 September. Dvādaśī runs from 18:53 on Wed 5 Sep to 16:28 on Thu 6 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/pradosha-vrata?on=1900-09-06", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6411, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-09-06T16:28:18+01:00", "utc": "1900-09-06T15:28:18Z", "ms": -2187505902064.435 }, "end": { "local": "1900-09-07T13:25:24+01:00", "utc": "1900-09-07T12:25:24Z", "ms": -2187430476083.5664 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-09-06T16:28:18+01:00", "utc": "1900-09-06T15:28:18Z", "ms": -2187505902064.435 }, "end": { "local": "1900-09-07T13:25:24+01:00", "utc": "1900-09-07T12:25:24Z", "ms": -2187430476083.5664 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-09-06", "window": { "start": { "local": "1900-09-06T18:15:09+01:00", "utc": "1900-09-06T17:15:09Z", "ms": -2187499491239.7148 }, "end": { "local": "1900-09-06T19:42:25+01:00", "utc": "1900-09-06T18:42:25Z", "ms": -2187494254509.963 } }, "covered_min": 87, "window_min": 87, "qualifies": true }, { "local_date": "1900-09-07", "window": { "start": { "local": "1900-09-07T18:13:08+01:00", "utc": "1900-09-07T17:13:08Z", "ms": -2187413211581.6077 }, "end": { "local": "1900-09-07T19:40:52+01:00", "utc": "1900-09-07T18:40:52Z", "ms": -2187407948132.7222 } }, "covered_min": 0, "window_min": 88, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 16:28 on Thu 6 Sep to 13:25 on Fri 7 Sep.", "fact": "1900-09-06T15:28:18Z → 1900-09-07T12:25:24Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:15–19:42 on the 6th, 18:13–19:41 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 87 of 87 minutes on the 6th and 0 of 88 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 6411 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Budapest, 1900: Thursday 6 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": "1900-09-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-06", "confidence": "determinate" } ], "quote": "In Budapest, Śukla Pradoṣa Vrata 1900 falls on Thursday 6 September. Trayodaśī runs from 16:28 on Thu 6 Sep to 13:25 on Fri 7 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-09-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7636, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-09-07T13:25:24+01:00", "utc": "1900-09-07T12:25:24Z", "ms": -2187430476083.5664 }, "end": { "local": "1900-09-08T09:54:21+01:00", "utc": "1900-09-08T08:54:21Z", "ms": -2187356738726.3203 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1900-09-07T13:25:24+01:00", "utc": "1900-09-07T12:25:24Z", "ms": -2187430476083.5664 }, "end": { "local": "1900-09-08T09:54:21+01:00", "utc": "1900-09-08T08:54:21Z", "ms": -2187356738726.3203 } }, "kaala": "udaya-3", "days": [ { "local_date": "1900-09-07", "window": { "start": { "local": "1900-09-07T05:09:44+01:00", "utc": "1900-09-07T04:09:44Z", "ms": -2187460215766.5747 }, "end": { "local": "1900-09-07T07:46:25+01:00", "utc": "1900-09-07T06:46:25Z", "ms": -2187450814929.5813 } }, "covered_min": 0, "window_min": 157, "qualifies": false }, { "local_date": "1900-09-08", "window": { "start": { "local": "1900-09-08T05:11:04+01:00", "utc": "1900-09-08T04:11:04Z", "ms": -2187373735714.9668 }, "end": { "local": "1900-09-08T07:47:05+01:00", "utc": "1900-09-08T06:47:05Z", "ms": -2187364375035.0894 } }, "covered_min": 156, "window_min": 156, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:25 on Fri 7 Sep to 09:54 on Sat 8 Sep.", "fact": "1900-09-07T12:25:24Z → 1900-09-08T08:54:21Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:10–07:46 on the 7th, 05:11–07:47 on the 8th.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must hold through the first three muhūrtas after sunrise. It covers 0 of 157 minutes on the 7th and 156 of 156 on the 8th.", "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 7636 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Budapest, 1900: Saturday 8 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": "1900-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-08", "confidence": "determinate" } ], "quote": "In Budapest, Ananta Caturdaśī 1900 falls on Saturday 8 September. Caturdaśī runs from 13:25 on Fri 7 Sep to 09:54 on Sat 8 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/sankashta-chaturthi?on=1900-09-11", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-11", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 204, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-09-11T18:52:05+01:00", "utc": "1900-09-11T17:52:05Z", "ms": -2187065274551.1406 }, "end": { "local": "1900-09-12T15:46:18+01:00", "utc": "1900-09-12T14:46:18Z", "ms": -2186990021568.4038 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-09-11T18:52:05+01:00", "utc": "1900-09-11T17:52:05Z", "ms": -2187065274551.1406 }, "end": { "local": "1900-09-12T15:46:18+01:00", "utc": "1900-09-12T14:46:18Z", "ms": -2186990021568.4038 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-09-11", "window": { "start": { "local": "1900-09-11T18:55:30+01:00", "utc": "1900-09-11T17:55:30Z", "ms": -2187065070190.9868 }, "end": { "local": "1900-09-11T18:55:30+01:00", "utc": "1900-09-11T17:55:30Z", "ms": -2187065070190.9868 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-09-12", "window": { "start": { "local": "1900-09-12T19:31:07+01:00", "utc": "1900-09-12T18:31:07Z", "ms": -2186976533020.2346 }, "end": { "local": "1900-09-12T19:31:07+01:00", "utc": "1900-09-12T18:31:07Z", "ms": -2186976533020.2346 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:52 on Tue 11 Sep to 15:46 on Wed 12 Sep.", "fact": "1900-09-11T17:52:05Z → 1900-09-12T14:46:18Z" }, { "step": "kaala", "text": "Moonrise is at 18:55 on the 11th and 19:31 on the 12th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 11th and is not on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 204 s < 300 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Budapest, 1900: Tuesday 11 September.", "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": "1900-09-11", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-11", "confidence": "determinate" } ], "quote": "In Budapest, Saṅkaṣṭa Caturthī 1900 falls on Tuesday 11 September. Caturthī runs from 18:52 on Tue 11 Sep to 15:46 on Wed 12 Sep and is current at moonrise that day. It is 3 min 24 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/budapest/festivals/1900/sankashta-chaturthi?on=1900-09-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25056, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1900-09-13T13:14:41+01:00", "utc": "1900-09-13T12:14:41Z", "ms": -2186912718902.066 }, "end": { "local": "1900-09-14T11:23:07+01:00", "utc": "1900-09-14T10:23:07Z", "ms": -2186833013199.29 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-09-13T13:14:41+01:00", "utc": "1900-09-13T12:14:41Z", "ms": -2186912718902.066 }, "end": { "local": "1900-09-14T11:23:07+01:00", "utc": "1900-09-14T10:23:07Z", "ms": -2186833013199.29 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-09-13", "window": { "start": { "local": "1900-09-13T20:12:17+01:00", "utc": "1900-09-13T19:12:17Z", "ms": -2186887662972.0354 }, "end": { "local": "1900-09-13T20:12:17+01:00", "utc": "1900-09-13T19:12:17Z", "ms": -2186887662972.0354 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-09-14", "window": { "start": { "local": "1900-09-14T21:00:00+01:00", "utc": "1900-09-14T20:00:00Z", "ms": -2186798399701.999 }, "end": { "local": "1900-09-14T21:00:00+01:00", "utc": "1900-09-14T20:00:00Z", "ms": -2186798399701.999 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 13:15 on Thu 13 Sep to 11:23 on Fri 14 Sep.", "fact": "1900-09-13T12:14:41Z → 1900-09-14T10:23:07Z" }, { "step": "kaala", "text": "Moonrise is at 20:12 on the 13th and 21:00 on the 14th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī 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. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25056 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Budapest, 1900: Thursday 13 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": "1900-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-13", "confidence": "determinate" } ], "quote": "In Budapest, Candra Ṣaṣṭhī 1900 falls on Thursday 13 September. Ṣaṣṭhī runs from 13:15 on Thu 13 Sep to 11:23 on Fri 14 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27726, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1900-09-15T10:14:49+01:00", "utc": "1900-09-15T09:14:49Z", "ms": -2186750711296.4985 }, "end": { "local": "1900-09-16T09:50:04+01:00", "utc": "1900-09-16T08:50:04Z", "ms": -2186665795977.139 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-09-15T10:14:49+01:00", "utc": "1900-09-15T09:14:49Z", "ms": -2186750711296.4985 }, "end": { "local": "1900-09-16T09:50:04+01:00", "utc": "1900-09-16T08:50:04Z", "ms": -2186665795977.139 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-09-15", "window": { "start": { "local": "1900-09-15T17:56:54+01:00", "utc": "1900-09-15T16:56:54Z", "ms": -2186722985677.423 }, "end": { "local": "1900-09-15T19:28:13+01:00", "utc": "1900-09-15T18:28:13Z", "ms": -2186717506782.632 } }, "covered_min": 91, "window_min": 91, "qualifies": true }, { "local_date": "1900-09-16", "window": { "start": { "local": "1900-09-16T17:54:52+01:00", "utc": "1900-09-16T16:54:52Z", "ms": -2186636708370.5493 }, "end": { "local": "1900-09-16T19:26:38+01:00", "utc": "1900-09-16T18:26:38Z", "ms": -2186631202373.765 } }, "covered_min": 0, "window_min": 92, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 10:15 on Sat 15 Sep to 09:50 on Sun 16 Sep.", "fact": "1900-09-15T09:14:49Z → 1900-09-16T08:50:04Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:57–19:28 on the 15th, 17:55–19:27 on the 16th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 91 of 91 minutes on the 15th and 0 of 92 on the 16th.", "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 27726 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Budapest, 1900: Saturday 15 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": "1900-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-15", "confidence": "determinate" } ], "quote": "In Budapest, Jitāṣṭamī (Jitiya) 1900 falls on Saturday 15 September. Aṣṭamī runs from 10:15 on Sat 15 Sep to 09:50 on Sun 16 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 41965, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1900-09-15T10:14:49+01:00", "utc": "1900-09-15T09:14:49Z", "ms": -2186750711296.4985 }, "end": { "local": "1900-09-16T09:50:04+01:00", "utc": "1900-09-16T08:50:04Z", "ms": -2186665795977.139 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-09-15T10:14:49+01:00", "utc": "1900-09-15T09:14:49Z", "ms": -2186750711296.4985 }, "end": { "local": "1900-09-16T09:50:04+01:00", "utc": "1900-09-16T08:50:04Z", "ms": -2186665795977.139 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-09-15", "window": { "start": { "local": "1900-09-15T21:54:14+01:00", "utc": "1900-09-15T20:54:14Z", "ms": -2186708746186.2957 }, "end": { "local": "1900-09-15T21:54:14+01:00", "utc": "1900-09-15T20:54:14Z", "ms": -2186708746186.2957 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-09-16", "window": { "start": { "local": "1900-09-16T22:53:40+01:00", "utc": "1900-09-16T21:53:40Z", "ms": -2186618779609.8115 }, "end": { "local": "1900-09-16T22:53:40+01:00", "utc": "1900-09-16T21:53:40Z", "ms": -2186618779609.8115 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 10:15 on Sat 15 Sep to 09:50 on Sun 16 Sep.", "fact": "1900-09-15T09:14:49Z → 1900-09-16T08:50:04Z" }, { "step": "kaala", "text": "Moonrise is at 21:54 on the 15th and 22:54 on the 16th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī 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. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 41965 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Budapest, 1900: Saturday 15 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": "1900-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-15", "confidence": "determinate" } ], "quote": "In Budapest, Mahālakṣmī Vrata Samāpana 1900 falls on Saturday 15 September. Aṣṭamī runs from 10:15 on Sat 15 Sep to 09:50 on Sun 16 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-09-19", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20068, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-09-18T10:58:55+01:00", "utc": "1900-09-18T09:58:55Z", "ms": -2186488865188.6968 }, "end": { "local": "1900-09-19T12:21:40+01:00", "utc": "1900-09-19T11:21:40Z", "ms": -2186397499660.1414 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-09-18T10:58:55+01:00", "utc": "1900-09-18T09:58:55Z", "ms": -2186488865188.6968 }, "end": { "local": "1900-09-19T12:21:40+01:00", "utc": "1900-09-19T11:21:40Z", "ms": -2186397499660.1414 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-09-18", "window": { "start": { "local": "1900-09-18T05:24:27+01:00", "utc": "1900-09-18T04:24:27Z", "ms": -2186508932713.8652 }, "end": { "local": "1900-09-18T05:24:27+01:00", "utc": "1900-09-18T04:24:27Z", "ms": -2186508932713.8652 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-09-19", "window": { "start": { "local": "1900-09-19T05:25:48+01:00", "utc": "1900-09-19T04:25:48Z", "ms": -2186422451917.5054 }, "end": { "local": "1900-09-19T05:25:48+01:00", "utc": "1900-09-19T04:25:48Z", "ms": -2186422451917.5054 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:59 on Tue 18 Sep to 12:22 on Wed 19 Sep.", "fact": "1900-09-18T09:58:55Z → 1900-09-19T11:21:40Z" }, { "step": "kaala", "text": "Sunrise is at 05:24 on the 18th and 05:26 on the 19th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 18th and is on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20068 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Budapest, 1900: Wednesday 19 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": "1900-09-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-19", "confidence": "determinate" } ], "quote": "In Budapest, Indirā Ekādaśī 1900 falls on Wednesday 19 September. Ekādaśī runs from 10:59 on Tue 18 Sep to 12:22 on Wed 19 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-09-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-09-20", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5504, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-09-20T14:08:17+01:00", "utc": "1900-09-20T13:08:17Z", "ms": -2186304703397.0227 }, "end": { "local": "1900-09-21T16:12:53+01:00", "utc": "1900-09-21T15:12:53Z", "ms": -2186210826562.336 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-09-20T14:08:17+01:00", "utc": "1900-09-20T13:08:17Z", "ms": -2186304703397.0227 }, "end": { "local": "1900-09-21T16:12:53+01:00", "utc": "1900-09-21T15:12:53Z", "ms": -2186210826562.336 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-09-20", "window": { "start": { "local": "1900-09-20T17:46:40+01:00", "utc": "1900-09-20T16:46:40Z", "ms": -2186291599862.1135 }, "end": { "local": "1900-09-20T19:20:15+01:00", "utc": "1900-09-20T18:20:15Z", "ms": -2186285985206.8887 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1900-09-21", "window": { "start": { "local": "1900-09-21T17:44:37+01:00", "utc": "1900-09-21T16:44:37Z", "ms": -2186205322768.9414 }, "end": { "local": "1900-09-21T19:18:39+01:00", "utc": "1900-09-21T18:18:39Z", "ms": -2186199680901.2903 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:08 on Thu 20 Sep to 16:13 on Fri 21 Sep.", "fact": "1900-09-20T13:08:17Z → 1900-09-21T15:12:53Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:47–19:20 on the 20th, 17:45–19:19 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 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. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5504 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Budapest, 1900: Thursday 20 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": "1900-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-20", "confidence": "determinate" } ], "quote": "In Budapest, Kṛṣṇa Pradoṣa Vrata 1900 falls on Thursday 20 September. Trayodaśī runs from 14:08 on Thu 20 Sep to 16:13 on Fri 21 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-09-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/shivaratri?on=1900-09-21", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16941, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-09-21T16:12:53+01:00", "utc": "1900-09-21T15:12:53Z", "ms": -2186210826562.336 }, "end": { "local": "1900-09-22T18:30:33+01:00", "utc": "1900-09-22T17:30:33Z", "ms": -2186116167342.9253 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-09-21T16:12:53+01:00", "utc": "1900-09-21T15:12:53Z", "ms": -2186210826562.336 }, "end": { "local": "1900-09-22T18:30:33+01:00", "utc": "1900-09-22T17:30:33Z", "ms": -2186116167342.9253 } }, "kaala": "nishita", "days": [ { "local_date": "1900-09-21", "window": { "start": { "local": "1900-09-21T23:13:14+01:00", "utc": "1900-09-21T22:13:14Z", "ms": -2186185605765.2495 }, "end": { "local": "1900-09-22T00:01:14+01:00", "utc": "1900-09-21T23:01:14Z", "ms": -2186182725765.2495 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-09-22", "window": { "start": { "local": "1900-09-22T23:12:53+01:00", "utc": "1900-09-22T22:12:53Z", "ms": -2186099226531.9556 }, "end": { "local": "1900-09-23T00:00:53+01:00", "utc": "1900-09-22T23:00:53Z", "ms": -2186096346531.9556 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 16:13 on Fri 21 Sep to 18:31 on Sat 22 Sep.", "fact": "1900-09-21T15:12:53Z → 1900-09-22T17:30:33Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:13–00:01 on the 21st, 23:13–00:01 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 16941 s" }, { "step": "ruling", "text": "Śivarātri, Budapest, 1900: Friday 21 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": "1900-09-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-21", "confidence": "determinate" } ], "quote": "In Budapest, Śivarātri 1900 falls on Friday 21 September. Caturdaśī runs from 16:13 on Fri 21 Sep to 18:31 on Sat 22 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/budapest/festivals/1900/shivaratri?on=1900-09-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11671, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1900-09-22T18:30:33+01:00", "utc": "1900-09-22T17:30:33Z", "ms": -2186116167342.9253 }, "end": { "local": "1900-09-23T20:56:58+01:00", "utc": "1900-09-23T19:56:58Z", "ms": -2186020982195.648 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-09-22T18:30:33+01:00", "utc": "1900-09-22T17:30:33Z", "ms": -2186116167342.9253 }, "end": { "local": "1900-09-23T20:56:58+01:00", "utc": "1900-09-23T19:56:58Z", "ms": -2186020982195.648 } }, "kaala": "aparahna", "days": [ { "local_date": "1900-09-22", "window": { "start": { "local": "1900-09-22T12:49:29+01:00", "utc": "1900-09-22T11:49:29Z", "ms": -2186136630883.923 }, "end": { "local": "1900-09-22T15:16:02+01:00", "utc": "1900-09-22T14:16:02Z", "ms": -2186127838258.0452 } }, "covered_min": 0, "window_min": 147, "qualifies": false }, { "local_date": "1900-09-23", "window": { "start": { "local": "1900-09-23T12:48:48+01:00", "utc": "1900-09-23T11:48:48Z", "ms": -2186050272026.8704 }, "end": { "local": "1900-09-23T15:14:40+01:00", "utc": "1900-09-23T14:14:40Z", "ms": -2186041520225.2456 } }, "covered_min": 146, "window_min": 146, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 18:31 on Sat 22 Sep to 20:57 on Sun 23 Sep.", "fact": "1900-09-22T17:30:33Z → 1900-09-23T19:56:58Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 12:49–15:16 on the 22nd, 12:49–15:15 on the 23rd.", "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 147 minutes on the 22nd and 146 of 146 on the 23rd.", "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 11671 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Budapest, 1900: Sunday 23 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": "1900-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-23", "confidence": "determinate" } ], "quote": "In Budapest, Mahālaya Amāvāsyā 1900 falls on Sunday 23 September. Amāvasyā runs from 18:31 on Sat 22 Sep to 20:57 on Sun 23 Sep and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32226, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1900-09-23T20:56:58+01:00", "utc": "1900-09-23T19:56:58Z", "ms": -2186020982195.648 }, "end": { "local": "1900-09-24T23:27:59+01:00", "utc": "1900-09-24T22:27:59Z", "ms": -2185925520787.8958 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-09-23T20:56:58+01:00", "utc": "1900-09-23T19:56:58Z", "ms": -2186020982195.648 }, "end": { "local": "1900-09-24T23:27:59+01:00", "utc": "1900-09-24T22:27:59Z", "ms": -2185925520787.8958 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-09-23", "window": { "start": { "local": "1900-09-23T11:11:52+01:00", "utc": "1900-09-23T10:11:52Z", "ms": -2186056087927.6826 }, "end": { "local": "1900-09-23T11:59:52+01:00", "utc": "1900-09-23T10:59:52Z", "ms": -2186053207927.6826 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-09-24", "window": { "start": { "local": "1900-09-24T11:11:31+01:00", "utc": "1900-09-24T10:11:31Z", "ms": -2185969708533.4646 }, "end": { "local": "1900-09-24T11:59:31+01:00", "utc": "1900-09-24T10:59:31Z", "ms": -2185966828533.4646 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 20:57 on Sun 23 Sep to 23:28 on Mon 24 Sep.", "fact": "1900-09-23T19:56:58Z → 1900-09-24T22:27:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:12–12:00 on the 23rd, 11:12–12:00 on the 24th.", "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 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 32226 s" }, { "step": "ruling", "text": "Navarātrārambha, Budapest, 1900: Monday 24 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": "1900-09-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-24", "confidence": "determinate" } ], "quote": "In Budapest, Navarātrārambha (Navratri) 1900 falls on Monday 24 September. Pratipadā runs from 20:57 on Sun 23 Sep to 23:28 on Mon 24 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/vinayaka-chaturthi?on=1900-09-27", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-09-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16592, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-09-27T04:23:16+01:00", "utc": "1900-09-27T03:23:16Z", "ms": -2185735004223.5708 }, "end": { "local": "1900-09-28T06:33:39+01:00", "utc": "1900-09-28T05:33:39Z", "ms": -2185640780959.8914 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-09-27T04:23:16+01:00", "utc": "1900-09-27T03:23:16Z", "ms": -2185735004223.5708 }, "end": { "local": "1900-09-28T06:33:39+01:00", "utc": "1900-09-28T05:33:39Z", "ms": -2185640780959.8914 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-09-27", "window": { "start": { "local": "1900-09-27T11:10:31+01:00", "utc": "1900-09-27T10:10:31Z", "ms": -2185710569426.005 }, "end": { "local": "1900-09-27T11:58:31+01:00", "utc": "1900-09-27T10:58:31Z", "ms": -2185707689426.005 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-09-28", "window": { "start": { "local": "1900-09-28T11:10:11+01:00", "utc": "1900-09-28T10:10:11Z", "ms": -2185624189356.6245 }, "end": { "local": "1900-09-28T11:58:11+01:00", "utc": "1900-09-28T10:58:11Z", "ms": -2185621309356.6245 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:23 on Thu 27 Sep to 06:34 on Fri 28 Sep.", "fact": "1900-09-27T03:23:16Z → 1900-09-28T05:33:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:11–11:59 on the 27th, 11:10–11:58 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 16592 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Budapest, 1900: Thursday 27 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": "1900-09-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-09-27", "confidence": "determinate" } ], "quote": "In Budapest, Vināyaka Caturthī 1900 falls on Thursday 27 September. Caturthī runs from 04:23 on Thu 27 Sep to 06:34 on Fri 28 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/vinayaka-chaturthi?on=1900-09-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11289, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1900-09-30T09:35:57+01:00", "utc": "1900-09-30T08:35:57Z", "ms": -2185457042591.008 }, "end": { "local": "1900-10-01T10:10:24+01:00", "utc": "1900-10-01T09:10:24Z", "ms": -2185368576239.06 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-09-30T09:35:57+01:00", "utc": "1900-09-30T08:35:57Z", "ms": -2185457042591.008 }, "end": { "local": "1900-10-01T10:10:24+01:00", "utc": "1900-10-01T09:10:24Z", "ms": -2185368576239.06 } }, "kaala": "udaya-1", "days": [ { "local_date": "1900-09-30", "window": { "start": { "local": "1900-09-30T05:40:46+01:00", "utc": "1900-09-30T04:40:46Z", "ms": -2185471153537.8376 }, "end": { "local": "1900-09-30T06:27:48+01:00", "utc": "1900-09-30T05:27:48Z", "ms": -2185468331540.8296 } }, "covered_min": 0, "window_min": 47, "qualifies": false }, { "local_date": "1900-10-01", "window": { "start": { "local": "1900-10-01T05:42:09+01:00", "utc": "1900-10-01T04:42:09Z", "ms": -2185384670815.8418 }, "end": { "local": "1900-10-01T06:28:58+01:00", "utc": "1900-10-01T05:28:58Z", "ms": -2185381862413.2864 } }, "covered_min": 47, "window_min": 47, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 09:36 on Sun 30 Sep to 10:10 on Mon 1 Oct.", "fact": "1900-09-30T08:35:57Z → 1900-10-01T09:10:24Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 05:41–06:28 on the 30th, 05:42–06:29 on the 1st.", "fact": "udaya-1: day-muhurta-1-1 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must hold through the first muhūrta after sunrise. It covers 0 of 47 minutes on the 30th and 47 of 47 on the 1st.", "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 11289 s" }, { "step": "ruling", "text": "Durgā Saptamī, Budapest, 1900: Monday 1 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Durga saptami (paraviddha) — covering one muhurta from sunrise" } ], "kaala": "udaya-1", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-10-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-01", "confidence": "determinate" } ], "quote": "In Budapest, Durgā Saptamī 1900 falls on Monday 1 October. Saptamī runs from 09:36 on Sun 30 Sep to 10:10 on Mon 1 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3528, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1900-10-01T10:10:24+01:00", "utc": "1900-10-01T09:10:24Z", "ms": -2185368576239.06 }, "end": { "local": "1900-10-02T09:58:32+01:00", "utc": "1900-10-02T08:58:32Z", "ms": -2185282888226.097 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-10-01T10:10:24+01:00", "utc": "1900-10-01T09:10:24Z", "ms": -2185368576239.06 }, "end": { "local": "1900-10-02T09:58:32+01:00", "utc": "1900-10-02T08:58:32Z", "ms": -2185282888226.097 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-10-01", "window": { "start": { "local": "1900-10-01T11:09:12+01:00", "utc": "1900-10-01T10:09:12Z", "ms": -2185365047796.6768 }, "end": { "local": "1900-10-01T11:57:12+01:00", "utc": "1900-10-01T10:57:12Z", "ms": -2185362167796.6768 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-10-02", "window": { "start": { "local": "1900-10-02T11:08:53+01:00", "utc": "1900-10-02T10:08:53Z", "ms": -2185278666764.3848 }, "end": { "local": "1900-10-02T11:56:53+01:00", "utc": "1900-10-02T10:56:53Z", "ms": -2185275786764.3848 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 10:10 on Mon 1 Oct to 09:59 on Tue 2 Oct.", "fact": "1900-10-01T09:10:24Z → 1900-10-02T08:58:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:09–11:57 on the 1st, 11:09–11:57 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 3528 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Budapest, 1900: Monday 1 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Mahastami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-10-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-01", "confidence": "determinate" } ], "quote": "In Budapest, Mahāṣṭamī (Durga Ashtami) 1900 falls on Monday 1 October. Aṣṭamī runs from 10:10 on Mon 1 Oct to 09:59 on Tue 2 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4221, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1900-10-02T09:58:32+01:00", "utc": "1900-10-02T08:58:32Z", "ms": -2185282888226.097 }, "end": { "local": "1900-10-03T08:57:58+01:00", "utc": "1900-10-03T07:57:58Z", "ms": -2185200122389.0317 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-10-02T09:58:32+01:00", "utc": "1900-10-02T08:58:32Z", "ms": -2185282888226.097 }, "end": { "local": "1900-10-03T08:57:58+01:00", "utc": "1900-10-03T07:57:58Z", "ms": -2185200122389.0317 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-10-02", "window": { "start": { "local": "1900-10-02T11:08:53+01:00", "utc": "1900-10-02T10:08:53Z", "ms": -2185278666764.3848 }, "end": { "local": "1900-10-02T11:56:53+01:00", "utc": "1900-10-02T10:56:53Z", "ms": -2185275786764.3848 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-10-03", "window": { "start": { "local": "1900-10-03T11:08:35+01:00", "utc": "1900-10-03T10:08:35Z", "ms": -2185192285443.91 }, "end": { "local": "1900-10-03T11:56:35+01:00", "utc": "1900-10-03T10:56:35Z", "ms": -2185189405443.91 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 09:59 on Tue 2 Oct to 08:58 on Wed 3 Oct.", "fact": "1900-10-02T08:58:32Z → 1900-10-03T07:57:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:09–11:57 on the 2nd, 11:09–11:57 on the 3rd.", "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 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 4221 s" }, { "step": "ruling", "text": "Mahānavamī, Budapest, 1900: Tuesday 2 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahanavami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Mahanavami (purvaviddha) (In Bengal it is observed as paraviddha covering one muhurta from sunrise)." } ], "not_evaluated": "The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.", "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-10-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-02", "confidence": "determinate" } ], "quote": "In Budapest, Mahānavamī 1900 falls on Tuesday 2 October. Navamī runs from 09:59 on Tue 2 Oct to 08:58 on Wed 3 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-04", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 52, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "1900-10-03T08:57:58+01:00", "utc": "1900-10-03T07:57:58Z", "ms": -2185200122389.0317 }, "end": { "local": "1900-10-04T07:09:57+01:00", "utc": "1900-10-04T06:09:57Z", "ms": -2185120203340.8108 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "conjunction", "start": { "local": "1900-10-03T17:21:05+01:00", "utc": "1900-10-03T16:21:05Z", "ms": -2185169934632.5078 }, "end": { "local": "1900-10-04T07:09:57+01:00", "utc": "1900-10-04T06:09:57Z", "ms": -2185120203340.8108 }, "nakshatra": { "type": "nakshatra", "index": 21, "key": "shravana", "name": "Śravaṇa", "start": { "local": "1900-10-03T17:21:05+01:00", "utc": "1900-10-03T16:21:05Z", "ms": -2185169934632.5078 }, "end": { "local": "1900-10-04T15:59:51+01:00", "utc": "1900-10-04T14:59:51Z", "ms": -2185088408754.9258 } } }, "kaala": "daytime", "days": [ { "local_date": "1900-10-03", "window": { "start": { "local": "1900-10-03T05:44:55+01:00", "utc": "1900-10-03T04:44:55Z", "ms": -2185211704747.3076 }, "end": { "local": "1900-10-03T17:20:14+01:00", "utc": "1900-10-03T16:20:14Z", "ms": -2185169986140.5122 } }, "covered_min": 0, "window_min": 695, "qualifies": false }, { "local_date": "1900-10-04", "window": { "start": { "local": "1900-10-04T05:46:19+01:00", "utc": "1900-10-04T04:46:19Z", "ms": -2185125221384.3306 }, "end": { "local": "1900-10-04T17:18:14+01:00", "utc": "1900-10-04T16:18:14Z", "ms": -2185083706245.6846 } }, "covered_min": 84, "window_min": 692, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 08:58 on Wed 3 Oct to 07:10 on Thu 4 Oct, and Śravaṇa from 17:21 on Wed 3 Oct to 16:00 on Thu 4 Oct. They are together from 17:21 on Wed 3 Oct to 07:10 on Thu 4 Oct.", "fact": "1900-10-03T16:21:05Z → 1900-10-04T06:09:57Z" }, { "step": "kaala", "text": "The day time is sunrise to sunset: 05:45–17:20 on the 3rd, 05:46–17:18 on the 4th.", "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 0 of 695 minutes on the 3rd and 84 of 692 on the 4th.", "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 52 s < 300 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Budapest, 1900: Thursday 4 October.", "fact": "confidence: boundary (margin)" } ], "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": "1900-10-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-04", "confidence": "boundary" } ], "quote": "In Budapest, Vijayā Daśamī (Dussehra) 1900 falls on Thursday 4 October. Daśamī runs from 08:58 on Wed 3 Oct to 07:10 on Thu 4 Oct and is with Śravaṇa in the day time that day, for 84 minutes. It is 0 min 52 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-10-04", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4117, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-10-04T07:09:57+01:00", "utc": "1900-10-04T06:09:57Z", "ms": -2185120203340.8108 }, "end": { "local": "1900-10-05T04:39:06+01:00", "utc": "1900-10-05T03:39:06Z", "ms": -2185042854381.9553 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-10-04T07:09:57+01:00", "utc": "1900-10-04T06:09:57Z", "ms": -2185120203340.8108 }, "end": { "local": "1900-10-05T04:39:06+01:00", "utc": "1900-10-05T03:39:06Z", "ms": -2185042854381.9553 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-10-04", "window": { "start": { "local": "1900-10-04T05:46:19+01:00", "utc": "1900-10-04T04:46:19Z", "ms": -2185125221384.3306 }, "end": { "local": "1900-10-04T05:46:19+01:00", "utc": "1900-10-04T04:46:19Z", "ms": -2185125221384.3306 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-10-05", "window": { "start": { "local": "1900-10-05T05:47:42+01:00", "utc": "1900-10-05T04:47:42Z", "ms": -2185038737789.6394 }, "end": { "local": "1900-10-05T05:47:42+01:00", "utc": "1900-10-05T04:47:42Z", "ms": -2185038737789.6394 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:10 on Thu 4 Oct to 04:39 on Fri 5 Oct.", "fact": "1900-10-04T06:09:57Z → 1900-10-05T03:39:06Z" }, { "step": "kaala", "text": "Sunrise is at 05:46 on the 4th and 05:48 on the 5th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 4th and is not on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 4117 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Budapest, 1900: Thursday 4 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": "1900-10-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-04", "confidence": "determinate" } ], "quote": "In Budapest, Pāśāṅkuśā Ekādaśī 1900 falls on Thursday 4 October. Ekādaśī runs from 07:10 on Thu 4 Oct to 04:39 on Fri 5 Oct, and is current at sunrise on neither day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-10-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-10-06", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11097, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-10-06T01:32:43+01:00", "utc": "1900-10-06T00:32:43Z", "ms": -2184967637099.167 }, "end": { "local": "1900-10-06T22:00:02+01:00", "utc": "1900-10-06T21:00:02Z", "ms": -2184893997847.783 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1900-10-06T01:32:43+01:00", "utc": "1900-10-06T00:32:43Z", "ms": -2184967637099.167 }, "end": { "local": "1900-10-06T22:00:02+01:00", "utc": "1900-10-06T21:00:02Z", "ms": -2184893997847.783 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-10-05", "window": { "start": { "local": "1900-10-05T17:16:14+01:00", "utc": "1900-10-05T16:16:14Z", "ms": -2184997425923.3374 }, "end": { "local": "1900-10-05T18:56:37+01:00", "utc": "1900-10-05T17:56:37Z", "ms": -2184991402993.8335 } }, "covered_min": 0, "window_min": 100, "qualifies": false }, { "local_date": "1900-10-06", "window": { "start": { "local": "1900-10-06T17:14:15+01:00", "utc": "1900-10-06T16:14:15Z", "ms": -2184911145140.0742 }, "end": { "local": "1900-10-06T18:55:05+01:00", "utc": "1900-10-06T17:55:05Z", "ms": -2184905095102.5728 } }, "covered_min": 101, "window_min": 101, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:33 on Sat 6 Oct to 22:00 on Sat 6 Oct.", "fact": "1900-10-06T00:32:43Z → 1900-10-06T21:00:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:16–18:57 on the 5th, 17:14–18:55 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 100 minutes on the 5th and 101 of 101 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 11097 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Budapest, 1900: Saturday 6 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": "1900-10-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-06", "confidence": "determinate" } ], "quote": "In Budapest, Śukla Pradoṣa Vrata 1900 falls on Saturday 6 October. Trayodaśī runs from 01:33 on Sat 6 Oct to 22:00 on Sat 6 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-10-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23972, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-10-11T03:57:59+01:00", "utc": "1900-10-11T02:57:59Z", "ms": -2184526921167.419 }, "end": { "local": "1900-10-12T01:30:49+01:00", "utc": "1900-10-12T00:30:49Z", "ms": -2184449351336.6072 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-11T03:57:59+01:00", "utc": "1900-10-11T02:57:59Z", "ms": -2184526921167.419 }, "end": { "local": "1900-10-12T01:30:49+01:00", "utc": "1900-10-12T00:30:49Z", "ms": -2184449351336.6072 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-10-10", "window": { "start": { "local": "1900-10-10T18:04:45+01:00", "utc": "1900-10-10T17:04:45Z", "ms": -2184562514517.8984 }, "end": { "local": "1900-10-10T18:04:45+01:00", "utc": "1900-10-10T17:04:45Z", "ms": -2184562514517.8984 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-10-11", "window": { "start": { "local": "1900-10-11T18:51:17+01:00", "utc": "1900-10-11T17:51:17Z", "ms": -2184473322915.2302 }, "end": { "local": "1900-10-11T18:51:17+01:00", "utc": "1900-10-11T17:51:17Z", "ms": -2184473322915.2302 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:58 on Thu 11 Oct to 01:31 on Fri 12 Oct.", "fact": "1900-10-11T02:57:59Z → 1900-10-12T00:30:49Z" }, { "step": "kaala", "text": "Moonrise is at 18:05 on the 10th and 18:51 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 10th and is on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 23972 s" }, { "step": "ruling", "text": "Karaka Caturthī, Budapest, 1900: Thursday 11 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": "1900-10-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-11", "confidence": "determinate" } ], "quote": "In Budapest, Karaka Caturthī (Karwa Chauth) 1900 falls on Thursday 11 October. Caturthī runs from 03:58 on Thu 11 Oct to 01:31 on Fri 12 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/sankashta-chaturthi?on=1900-10-11", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23972, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-10-11T03:57:59+01:00", "utc": "1900-10-11T02:57:59Z", "ms": -2184526921167.419 }, "end": { "local": "1900-10-12T01:30:49+01:00", "utc": "1900-10-12T00:30:49Z", "ms": -2184449351336.6072 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-11T03:57:59+01:00", "utc": "1900-10-11T02:57:59Z", "ms": -2184526921167.419 }, "end": { "local": "1900-10-12T01:30:49+01:00", "utc": "1900-10-12T00:30:49Z", "ms": -2184449351336.6072 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-10-10", "window": { "start": { "local": "1900-10-10T18:04:45+01:00", "utc": "1900-10-10T17:04:45Z", "ms": -2184562514517.8984 }, "end": { "local": "1900-10-10T18:04:45+01:00", "utc": "1900-10-10T17:04:45Z", "ms": -2184562514517.8984 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-10-11", "window": { "start": { "local": "1900-10-11T18:51:17+01:00", "utc": "1900-10-11T17:51:17Z", "ms": -2184473322915.2302 }, "end": { "local": "1900-10-11T18:51:17+01:00", "utc": "1900-10-11T17:51:17Z", "ms": -2184473322915.2302 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:58 on Thu 11 Oct to 01:31 on Fri 12 Oct.", "fact": "1900-10-11T02:57:59Z → 1900-10-12T00:30:49Z" }, { "step": "kaala", "text": "Moonrise is at 18:05 on the 10th and 18:51 on the 11th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 10th and is on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23972 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Budapest, 1900: Thursday 11 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": "1900-10-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-11", "confidence": "determinate" } ], "quote": "In Budapest, Saṅkaṣṭa Caturthī 1900 falls on Thursday 11 October. Caturthī runs from 03:58 on Thu 11 Oct to 01:31 on Fri 12 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/sankashta-chaturthi?on=1900-10-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1320, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1900-10-14T22:38:23+01:00", "utc": "1900-10-14T21:38:23Z", "ms": -2184200496504.0015 }, "end": { "local": "1900-10-15T23:14:05+01:00", "utc": "1900-10-15T22:14:05Z", "ms": -2184111955171.8635 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-14T22:38:23+01:00", "utc": "1900-10-14T21:38:23Z", "ms": -2184200496504.0015 }, "end": { "local": "1900-10-15T23:14:05+01:00", "utc": "1900-10-15T22:14:05Z", "ms": -2184111955171.8635 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-10-14", "window": { "start": { "local": "1900-10-14T21:47:32+01:00", "utc": "1900-10-14T20:47:32Z", "ms": -2184203548036.9597 }, "end": { "local": "1900-10-14T21:47:32+01:00", "utc": "1900-10-14T20:47:32Z", "ms": -2184203548036.9597 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-10-15", "window": { "start": { "local": "1900-10-15T22:52:05+01:00", "utc": "1900-10-15T21:52:05Z", "ms": -2184113274840.8723 }, "end": { "local": "1900-10-15T22:52:05+01:00", "utc": "1900-10-15T21:52:05Z", "ms": -2184113274840.8723 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 22:38 on Sun 14 Oct to 23:14 on Mon 15 Oct.", "fact": "1900-10-14T21:38:23Z → 1900-10-15T22:14:05Z" }, { "step": "kaala", "text": "Moonrise is at 21:48 on the 14th and 22:52 on the 15th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 14th and is on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1320 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Budapest, 1900: Monday 15 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": "1900-10-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-15", "confidence": "determinate" } ], "quote": "In Budapest, Ahoyī Aṣṭamī 1900 falls on Monday 15 October. Aṣṭamī runs from 22:38 on Sun 14 Oct to 23:14 on Mon 15 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-10-18", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5836, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-10-18T02:18:30+01:00", "utc": "1900-10-18T01:18:30Z", "ms": -2183928089760.4329 }, "end": { "local": "1900-10-19T04:30:27+01:00", "utc": "1900-10-19T03:30:27Z", "ms": -2183833772694.0571 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-18T02:18:30+01:00", "utc": "1900-10-18T01:18:30Z", "ms": -2183928089760.4329 }, "end": { "local": "1900-10-19T04:30:27+01:00", "utc": "1900-10-19T03:30:27Z", "ms": -2183833772694.0571 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-10-18", "window": { "start": { "local": "1900-10-18T06:06:15+01:00", "utc": "1900-10-18T05:06:15Z", "ms": -2183914424709.827 }, "end": { "local": "1900-10-18T06:06:15+01:00", "utc": "1900-10-18T05:06:15Z", "ms": -2183914424709.827 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-10-19", "window": { "start": { "local": "1900-10-19T06:07:43+01:00", "utc": "1900-10-19T05:07:43Z", "ms": -2183827936838.8245 }, "end": { "local": "1900-10-19T06:07:43+01:00", "utc": "1900-10-19T05:07:43Z", "ms": -2183827936838.8245 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:19 on Thu 18 Oct to 04:30 on Fri 19 Oct.", "fact": "1900-10-18T01:18:30Z → 1900-10-19T03:30:27Z" }, { "step": "kaala", "text": "Sunrise is at 06:06 on the 18th and 06:08 on the 19th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 18th and is not on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5836 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Budapest, 1900: Thursday 18 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": "1900-10-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-18", "confidence": "determinate" } ], "quote": "In Budapest, Ramā Ekādaśī 1900 falls on Thursday 18 October. Ekādaśī runs from 02:19 on Thu 18 Oct to 04:30 on Fri 19 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-10-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35444, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1900-10-19T04:30:27+01:00", "utc": "1900-10-19T03:30:27Z", "ms": -2183833772694.0571 }, "end": { "local": "1900-10-20T06:56:50+01:00", "utc": "1900-10-20T05:56:50Z", "ms": -2183738589969.2605 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-19T04:30:27+01:00", "utc": "1900-10-19T03:30:27Z", "ms": -2183833772694.0571 }, "end": { "local": "1900-10-20T06:56:50+01:00", "utc": "1900-10-20T05:56:50Z", "ms": -2183738589969.2605 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-10-19", "window": { "start": { "local": "1900-10-19T16:49:23+01:00", "utc": "1900-10-19T15:49:23Z", "ms": -2183789436784.9158 }, "end": { "local": "1900-10-19T18:36:02+01:00", "utc": "1900-10-19T17:36:02Z", "ms": -2183783038367.3997 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1900-10-20", "window": { "start": { "local": "1900-10-20T16:47:34+01:00", "utc": "1900-10-20T15:47:34Z", "ms": -2183703145774.1948 }, "end": { "local": "1900-10-20T18:34:39+01:00", "utc": "1900-10-20T17:34:39Z", "ms": -2183696721025.927 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 04:30 on Fri 19 Oct to 06:57 on Sat 20 Oct.", "fact": "1900-10-19T03:30:27Z → 1900-10-20T05:56:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:49–18:36 on the 19th, 16:48–18:35 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 107 of 107 minutes on the 19th and 0 of 107 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: purvaviddha → only-day · margin 35444 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Budapest, 1900: Friday 19 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": "1900-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-19", "confidence": "determinate" } ], "quote": "In Budapest, Govatsa Dvādaśī (Vasu Baras) 1900 falls on Friday 19 October. Dvādaśī runs from 04:30 on Fri 19 Oct to 06:57 on Sat 20 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26178, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-10-20T06:56:50+01:00", "utc": "1900-10-20T05:56:50Z", "ms": -2183738589969.2605 }, "end": { "local": "1900-10-21T09:29:28+01:00", "utc": "1900-10-21T08:29:28Z", "ms": -2183643032185.0642 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-20T06:56:50+01:00", "utc": "1900-10-20T05:56:50Z", "ms": -2183738589969.2605 }, "end": { "local": "1900-10-21T09:29:28+01:00", "utc": "1900-10-21T08:29:28Z", "ms": -2183643032185.0642 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-10-20", "window": { "start": { "local": "1900-10-20T16:47:34+01:00", "utc": "1900-10-20T15:47:34Z", "ms": -2183703145774.1948 }, "end": { "local": "1900-10-20T18:34:39+01:00", "utc": "1900-10-20T17:34:39Z", "ms": -2183696721025.927 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1900-10-21", "window": { "start": { "local": "1900-10-21T16:45:46+01:00", "utc": "1900-10-21T15:45:46Z", "ms": -2183616853760.157 }, "end": { "local": "1900-10-21T18:33:17+01:00", "utc": "1900-10-21T17:33:17Z", "ms": -2183610402775.4055 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:57 on Sat 20 Oct to 09:29 on Sun 21 Oct.", "fact": "1900-10-20T05:56:50Z → 1900-10-21T08:29:28Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:48–18:35 on the 20th, 16:46–18:33 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 107 of 107 minutes on the 20th and 0 of 108 on the 21st.", "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 26178 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Budapest, 1900: Saturday 20 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": "1900-10-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-20", "confidence": "determinate" } ], "quote": "In Budapest, Yama Dīpadāna 1900 falls on Saturday 20 October. Trayodaśī runs from 06:57 on Sat 20 Oct to 09:29 on Sun 21 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/pradosha-vrata?on=1900-10-20", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26178, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-10-20T06:56:50+01:00", "utc": "1900-10-20T05:56:50Z", "ms": -2183738589969.2605 }, "end": { "local": "1900-10-21T09:29:28+01:00", "utc": "1900-10-21T08:29:28Z", "ms": -2183643032185.0642 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-20T06:56:50+01:00", "utc": "1900-10-20T05:56:50Z", "ms": -2183738589969.2605 }, "end": { "local": "1900-10-21T09:29:28+01:00", "utc": "1900-10-21T08:29:28Z", "ms": -2183643032185.0642 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-10-20", "window": { "start": { "local": "1900-10-20T16:47:34+01:00", "utc": "1900-10-20T15:47:34Z", "ms": -2183703145774.1948 }, "end": { "local": "1900-10-20T18:34:39+01:00", "utc": "1900-10-20T17:34:39Z", "ms": -2183696721025.927 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1900-10-21", "window": { "start": { "local": "1900-10-21T16:45:46+01:00", "utc": "1900-10-21T15:45:46Z", "ms": -2183616853760.157 }, "end": { "local": "1900-10-21T18:33:17+01:00", "utc": "1900-10-21T17:33:17Z", "ms": -2183610402775.4055 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:57 on Sat 20 Oct to 09:29 on Sun 21 Oct.", "fact": "1900-10-20T05:56:50Z → 1900-10-21T08:29:28Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:48–18:35 on the 20th, 16:46–18:33 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 107 of 107 minutes on the 20th and 0 of 108 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 26178 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Budapest, 1900: Saturday 20 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": "1900-10-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-20", "confidence": "determinate" } ], "quote": "In Budapest, Kṛṣṇa Pradoṣa Vrata 1900 falls on Saturday 20 October. Trayodaśī runs from 06:57 on Sat 20 Oct to 09:29 on Sun 21 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-10-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/shivaratri?on=1900-10-21", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34581, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-10-21T09:29:28+01:00", "utc": "1900-10-21T08:29:28Z", "ms": -2183643032185.0642 }, "end": { "local": "1900-10-22T12:01:28+01:00", "utc": "1900-10-22T11:01:28Z", "ms": -2183547511625.3333 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-21T09:29:28+01:00", "utc": "1900-10-21T08:29:28Z", "ms": -2183643032185.0642 }, "end": { "local": "1900-10-22T12:01:28+01:00", "utc": "1900-10-22T11:01:28Z", "ms": -2183547511625.3333 } }, "kaala": "nishita", "days": [ { "local_date": "1900-10-20", "window": { "start": { "local": "1900-10-20T23:05:07+01:00", "utc": "1900-10-20T22:05:07Z", "ms": -2183680492968.19 }, "end": { "local": "1900-10-20T23:53:07+01:00", "utc": "1900-10-20T22:53:07Z", "ms": -2183677612968.19 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-10-21", "window": { "start": { "local": "1900-10-21T23:04:57+01:00", "utc": "1900-10-21T22:04:57Z", "ms": -2183594102567.3389 }, "end": { "local": "1900-10-21T23:52:57+01:00", "utc": "1900-10-21T22:52:57Z", "ms": -2183591222567.3389 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:29 on Sun 21 Oct to 12:01 on Mon 22 Oct.", "fact": "1900-10-21T08:29:28Z → 1900-10-22T11:01:28Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:05–23:53 on the 20th, 23:05–23:53 on the 21st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34581 s" }, { "step": "ruling", "text": "Śivarātri, Budapest, 1900: Sunday 21 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": "1900-10-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-21", "confidence": "determinate" } ], "quote": "In Budapest, Śivarātri 1900 falls on Sunday 21 October. Caturdaśī runs from 09:29 on Sun 21 Oct to 12:01 on Mon 22 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/budapest/festivals/1900/shivaratri?on=1900-10-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11928, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-10-21T09:29:28+01:00", "utc": "1900-10-21T08:29:28Z", "ms": -2183643032185.0642 }, "end": { "local": "1900-10-22T12:01:28+01:00", "utc": "1900-10-22T11:01:28Z", "ms": -2183547511625.3333 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-21T09:29:28+01:00", "utc": "1900-10-21T08:29:28Z", "ms": -2183643032185.0642 }, "end": { "local": "1900-10-22T12:01:28+01:00", "utc": "1900-10-22T11:01:28Z", "ms": -2183547511625.3333 } }, "kaala": "arunodaya", "days": [ { "local_date": "1900-10-21", "window": { "start": { "local": "1900-10-21T04:23:35+01:00", "utc": "1900-10-21T03:23:35Z", "ms": -2183661384910.4531 }, "end": { "local": "1900-10-21T06:10:40+01:00", "utc": "1900-10-21T05:10:40Z", "ms": -2183654960162.1853 } }, "covered_min": 0, "window_min": 107, "qualifies": false }, { "local_date": "1900-10-22", "window": { "start": { "local": "1900-10-22T04:24:38+01:00", "utc": "1900-10-22T03:24:38Z", "ms": -2183574922359.2725 }, "end": { "local": "1900-10-22T06:12:09+01:00", "utc": "1900-10-22T05:12:09Z", "ms": -2183568471374.521 } }, "covered_min": 108, "window_min": 108, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:29 on Sun 21 Oct to 12:01 on Mon 22 Oct.", "fact": "1900-10-21T08:29:28Z → 1900-10-22T11:01:28Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:24–06:11 on the 21st, 04:25–06:12 on the 22nd.", "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 107 minutes on the 21st and 108 of 108 on the 22nd.", "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 11928 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Budapest, 1900: Monday 22 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": "1900-10-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-22", "confidence": "determinate" } ], "quote": "In Budapest, Naraka Caturdaśī (Choti Diwali) 1900 falls on Monday 22 October. Caturdaśī runs from 09:29 on Sun 21 Oct to 12:01 on Mon 22 Oct and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8101, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1900-10-22T12:01:28+01:00", "utc": "1900-10-22T11:01:28Z", "ms": -2183547511625.3333 }, "end": { "local": "1900-10-23T14:27:12+01:00", "utc": "1900-10-23T13:27:12Z", "ms": -2183452367673.684 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-22T12:01:28+01:00", "utc": "1900-10-22T11:01:28Z", "ms": -2183547511625.3333 }, "end": { "local": "1900-10-23T14:27:12+01:00", "utc": "1900-10-23T13:27:12Z", "ms": -2183452367673.684 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-10-22", "window": { "start": { "local": "1900-10-22T16:43:59+01:00", "utc": "1900-10-22T15:43:59Z", "ms": -2183530560706.4854 }, "end": { "local": "1900-10-22T18:31:56+01:00", "utc": "1900-10-22T17:31:56Z", "ms": -2183524083585.8784 } }, "covered_min": 108, "window_min": 108, "qualifies": true }, { "local_date": "1900-10-23", "window": { "start": { "local": "1900-10-23T16:42:13+01:00", "utc": "1900-10-23T15:42:13Z", "ms": -2183444266576.6694 }, "end": { "local": "1900-10-23T18:30:37+01:00", "utc": "1900-10-23T17:30:37Z", "ms": -2183437763427.3713 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 12:01 on Mon 22 Oct to 14:27 on Tue 23 Oct.", "fact": "1900-10-22T11:01:28Z → 1900-10-23T13:27:12Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:44–18:32 on the 22nd, 16:42–18:31 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 108 of 108 minutes on the 22nd and 0 of 108 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8101 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Budapest, 1900: Monday 22 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": "1900-10-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-22", "confidence": "determinate" } ], "quote": "In Budapest, Lakṣmī Pūjā (Diwali) 1900 falls on Monday 22 October. Amāvasyā runs from 12:01 on Mon 22 Oct to 14:27 on Tue 23 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31048, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1900-10-22T12:01:28+01:00", "utc": "1900-10-22T11:01:28Z", "ms": -2183547511625.3333 }, "end": { "local": "1900-10-23T14:27:12+01:00", "utc": "1900-10-23T13:27:12Z", "ms": -2183452367673.684 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-22T12:01:28+01:00", "utc": "1900-10-22T11:01:28Z", "ms": -2183547511625.3333 }, "end": { "local": "1900-10-23T14:27:12+01:00", "utc": "1900-10-23T13:27:12Z", "ms": -2183452367673.684 } }, "kaala": "nishita", "days": [ { "local_date": "1900-10-22", "window": { "start": { "local": "1900-10-22T23:04:48+01:00", "utc": "1900-10-22T22:04:48Z", "ms": -2183507711504.2095 }, "end": { "local": "1900-10-22T23:52:48+01:00", "utc": "1900-10-22T22:52:48Z", "ms": -2183504831504.2095 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-10-23", "window": { "start": { "local": "1900-10-23T23:04:40+01:00", "utc": "1900-10-23T22:04:40Z", "ms": -2183421319766.8018 }, "end": { "local": "1900-10-23T23:52:40+01:00", "utc": "1900-10-23T22:52:40Z", "ms": -2183418439766.8018 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 12:01 on Mon 22 Oct to 14:27 on Tue 23 Oct.", "fact": "1900-10-22T11:01:28Z → 1900-10-23T13:27:12Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:05–23:53 on the 22nd, 23:05–23:53 on the 23rd.", "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 22nd and 0 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31048 s" }, { "step": "ruling", "text": "Kālī Pūjā, Budapest, 1900: Monday 22 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": "1900-10-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-22", "confidence": "determinate" } ], "quote": "In Budapest, Kālī Pūjā 1900 falls on Monday 22 October. Amāvasyā runs from 12:01 on Mon 22 Oct to 14:27 on Tue 23 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-23", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 78, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1900-10-23T14:27:12+01:00", "utc": "1900-10-23T13:27:12Z", "ms": -2183452367673.684 }, "end": { "local": "1900-10-24T16:41:47+01:00", "utc": "1900-10-24T15:41:47Z", "ms": -2183357893137.0012 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-23T14:27:12+01:00", "utc": "1900-10-23T13:27:12Z", "ms": -2183452367673.684 }, "end": { "local": "1900-10-24T16:41:47+01:00", "utc": "1900-10-24T15:41:47Z", "ms": -2183357893137.0012 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-10-23", "window": { "start": { "local": "1900-10-23T16:42:13+01:00", "utc": "1900-10-23T15:42:13Z", "ms": -2183444266576.6694 }, "end": { "local": "1900-10-23T18:30:37+01:00", "utc": "1900-10-23T17:30:37Z", "ms": -2183437763427.3713 } }, "covered_min": 108, "window_min": 108, "qualifies": true }, { "local_date": "1900-10-24", "window": { "start": { "local": "1900-10-24T16:40:29+01:00", "utc": "1900-10-24T15:40:29Z", "ms": -2183357971334.4429 }, "end": { "local": "1900-10-24T18:29:18+01:00", "utc": "1900-10-24T17:29:18Z", "ms": -2183351442270.5386 } }, "covered_min": 1, "window_min": 109, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 14:27 on Tue 23 Oct to 16:42 on Wed 24 Oct.", "fact": "1900-10-23T13:27:12Z → 1900-10-24T15:41:47Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:42–18:31 on the 23rd, 16:40–18:29 on the 24th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 108 of 108 minutes on the 23rd and 1 of 109 on the 24th.", "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 78 s < 300 s" }, { "step": "ruling", "text": "Bali Pūjā, Budapest, 1900: Tuesday 23 October.", "fact": "confidence: boundary (margin, 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": "1900-10-23", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-23", "confidence": "boundary" } ], "quote": "In Budapest, Bali Pūjā 1900 falls on Tuesday 23 October. Pratipadā runs from 14:27 on Tue 23 Oct to 16:42 on Wed 24 Oct and covers all of pradoṣa that evening. It also reaches the next evening for 1 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 1 min 18 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9317, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1900-10-23T14:27:12+01:00", "utc": "1900-10-23T13:27:12Z", "ms": -2183452367673.684 }, "end": { "local": "1900-10-24T16:41:47+01:00", "utc": "1900-10-24T15:41:47Z", "ms": -2183357893137.0012 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-23T14:27:12+01:00", "utc": "1900-10-23T13:27:12Z", "ms": -2183452367673.684 }, "end": { "local": "1900-10-24T16:41:47+01:00", "utc": "1900-10-24T15:41:47Z", "ms": -2183357893137.0012 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-10-23", "window": { "start": { "local": "1900-10-23T11:03:56+01:00", "utc": "1900-10-23T10:03:56Z", "ms": -2183464564439.3018 }, "end": { "local": "1900-10-23T11:51:56+01:00", "utc": "1900-10-23T10:51:56Z", "ms": -2183461684439.3018 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-10-24", "window": { "start": { "local": "1900-10-24T11:03:48+01:00", "utc": "1900-10-24T10:03:48Z", "ms": -2183378172145.6885 }, "end": { "local": "1900-10-24T11:51:48+01:00", "utc": "1900-10-24T10:51:48Z", "ms": -2183375292145.6885 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 14:27 on Tue 23 Oct to 16:42 on Wed 24 Oct.", "fact": "1900-10-23T13:27:12Z → 1900-10-24T15:41:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 23rd, 11:04–11:52 on the 24th.", "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 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: purvaviddha → only-day · margin 9317 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Budapest, 1900: Wednesday 24 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": "1900-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-24", "confidence": "determinate" } ], "quote": "In Budapest, Govardhana Pūjā 1900 falls on Wednesday 24 October. Pratipadā runs from 14:27 on Tue 23 Oct to 16:42 on Wed 24 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17043, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1900-10-23T14:27:12+01:00", "utc": "1900-10-23T13:27:12Z", "ms": -2183452367673.684 }, "end": { "local": "1900-10-24T16:41:47+01:00", "utc": "1900-10-24T15:41:47Z", "ms": -2183357893137.0012 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-23T14:27:12+01:00", "utc": "1900-10-23T13:27:12Z", "ms": -2183452367673.684 }, "end": { "local": "1900-10-24T16:41:47+01:00", "utc": "1900-10-24T15:41:47Z", "ms": -2183357893137.0012 } }, "kaala": "purvahna", "days": [ { "local_date": "1900-10-23", "window": { "start": { "local": "1900-10-23T06:13:38+01:00", "utc": "1900-10-23T05:13:38Z", "ms": -2183481982301.9338 }, "end": { "local": "1900-10-23T09:43:10+01:00", "utc": "1900-10-23T08:43:10Z", "ms": -2183469410393.5125 } }, "covered_min": 0, "window_min": 210, "qualifies": false }, { "local_date": "1900-10-24", "window": { "start": { "local": "1900-10-24T06:15:07+01:00", "utc": "1900-10-24T05:15:07Z", "ms": -2183395492956.934 }, "end": { "local": "1900-10-24T09:43:34+01:00", "utc": "1900-10-24T08:43:34Z", "ms": -2183382985749.437 } }, "covered_min": 208, "window_min": 208, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 14:27 on Tue 23 Oct to 16:42 on Wed 24 Oct.", "fact": "1900-10-23T13:27:12Z → 1900-10-24T15:41:47Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:14–09:43 on the 23rd, 06:15–09:44 on the 24th.", "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 210 minutes on the 23rd and 208 of 208 on the 24th.", "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 17043 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Budapest, 1900: Wednesday 24 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": "1900-10-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-24", "confidence": "determinate" } ], "quote": "In Budapest, Dyūta Pratipad 1900 falls on Wednesday 24 October. Pratipadā runs from 14:27 on Tue 23 Oct to 16:42 on Wed 24 Oct and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17399, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1900-10-24T16:41:47+01:00", "utc": "1900-10-24T15:41:47Z", "ms": -2183357893137.0012 }, "end": { "local": "1900-10-25T18:40:33+01:00", "utc": "1900-10-25T17:40:33Z", "ms": -2183264366714.7344 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-24T16:41:47+01:00", "utc": "1900-10-24T15:41:47Z", "ms": -2183357893137.0012 }, "end": { "local": "1900-10-25T18:40:33+01:00", "utc": "1900-10-25T17:40:33Z", "ms": -2183264366714.7344 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-10-24", "window": { "start": { "local": "1900-10-24T11:03:48+01:00", "utc": "1900-10-24T10:03:48Z", "ms": -2183378172145.6885 }, "end": { "local": "1900-10-24T11:51:48+01:00", "utc": "1900-10-24T10:51:48Z", "ms": -2183375292145.6885 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-10-25", "window": { "start": { "local": "1900-10-25T11:03:41+01:00", "utc": "1900-10-25T10:03:41Z", "ms": -2183291779148.4294 }, "end": { "local": "1900-10-25T11:51:41+01:00", "utc": "1900-10-25T10:51:41Z", "ms": -2183288899148.4294 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 16:42 on Wed 24 Oct to 18:41 on Thu 25 Oct.", "fact": "1900-10-24T15:41:47Z → 1900-10-25T17:40:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 24th, 11:04–11:52 on the 25th.", "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 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 17399 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Budapest, 1900: Thursday 25 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": "1900-10-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-25", "confidence": "determinate" } ], "quote": "In Budapest, Yama Dvitīyā (Bhai Dooj) 1900 falls on Thursday 25 October. Dvitīyā runs from 16:42 on Wed 24 Oct to 18:41 on Thu 25 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30428, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-10-26T20:18:43+01:00", "utc": "1900-10-26T19:18:43Z", "ms": -2183172077132.3445 }, "end": { "local": "1900-10-27T21:31:12+01:00", "utc": "1900-10-27T20:31:12Z", "ms": -2183081328465.2727 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-26T20:18:43+01:00", "utc": "1900-10-26T19:18:43Z", "ms": -2183172077132.3445 }, "end": { "local": "1900-10-27T21:31:12+01:00", "utc": "1900-10-27T20:31:12Z", "ms": -2183081328465.2727 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-10-26", "window": { "start": { "local": "1900-10-26T11:03:35+01:00", "utc": "1900-10-26T10:03:35Z", "ms": -2183205385436.8718 }, "end": { "local": "1900-10-26T11:51:35+01:00", "utc": "1900-10-26T10:51:35Z", "ms": -2183202505436.8718 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-10-27", "window": { "start": { "local": "1900-10-27T11:03:29+01:00", "utc": "1900-10-27T10:03:29Z", "ms": -2183118991000.8718 }, "end": { "local": "1900-10-27T11:51:29+01:00", "utc": "1900-10-27T10:51:29Z", "ms": -2183116111000.8718 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:19 on Fri 26 Oct to 21:31 on Sat 27 Oct.", "fact": "1900-10-26T19:18:43Z → 1900-10-27T20:31:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 26th, 11:03–11:51 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. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 30428 s" }, { "step": "ruling", "text": "Nāga Caturthī, Budapest, 1900: Saturday 27 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": "1900-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-27", "confidence": "determinate" } ], "quote": "In Budapest, Nāga Caturthī 1900 falls on Saturday 27 October. Caturthī runs from 20:19 on Fri 26 Oct to 21:31 on Sat 27 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/vinayaka-chaturthi?on=1900-10-27", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30428, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-10-26T20:18:43+01:00", "utc": "1900-10-26T19:18:43Z", "ms": -2183172077132.3445 }, "end": { "local": "1900-10-27T21:31:12+01:00", "utc": "1900-10-27T20:31:12Z", "ms": -2183081328465.2727 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-26T20:18:43+01:00", "utc": "1900-10-26T19:18:43Z", "ms": -2183172077132.3445 }, "end": { "local": "1900-10-27T21:31:12+01:00", "utc": "1900-10-27T20:31:12Z", "ms": -2183081328465.2727 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-10-26", "window": { "start": { "local": "1900-10-26T11:03:35+01:00", "utc": "1900-10-26T10:03:35Z", "ms": -2183205385436.8718 }, "end": { "local": "1900-10-26T11:51:35+01:00", "utc": "1900-10-26T10:51:35Z", "ms": -2183202505436.8718 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-10-27", "window": { "start": { "local": "1900-10-27T11:03:29+01:00", "utc": "1900-10-27T10:03:29Z", "ms": -2183118991000.8718 }, "end": { "local": "1900-10-27T11:51:29+01:00", "utc": "1900-10-27T10:51:29Z", "ms": -2183116111000.8718 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:19 on Fri 26 Oct to 21:31 on Sat 27 Oct.", "fact": "1900-10-26T19:18:43Z → 1900-10-27T20:31:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 26th, 11:03–11:51 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 30428 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Budapest, 1900: Saturday 27 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": "1900-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-27", "confidence": "determinate" } ], "quote": "In Budapest, Vināyaka Caturthī 1900 falls on Saturday 27 October. Caturthī runs from 20:19 on Fri 26 Oct to 21:31 on Sat 27 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/vinayaka-chaturthi?on=1900-10-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37293, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1900-10-28T22:12:57+01:00", "utc": "1900-10-28T21:12:57Z", "ms": -2182992422825.5706 }, "end": { "local": "1900-10-29T22:19:35+01:00", "utc": "1900-10-29T21:19:35Z", "ms": -2182905624579.2722 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-28T22:12:57+01:00", "utc": "1900-10-28T21:12:57Z", "ms": -2182992422825.5706 }, "end": { "local": "1900-10-29T22:19:35+01:00", "utc": "1900-10-29T21:19:35Z", "ms": -2182905624579.2722 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-10-28", "window": { "start": { "local": "1900-10-28T11:03:24+01:00", "utc": "1900-10-28T10:03:24Z", "ms": -2183032595830.7083 }, "end": { "local": "1900-10-28T11:51:24+01:00", "utc": "1900-10-28T10:51:24Z", "ms": -2183029715830.7083 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-10-29", "window": { "start": { "local": "1900-10-29T11:03:20+01:00", "utc": "1900-10-29T10:03:20Z", "ms": -2182946199916.9773 }, "end": { "local": "1900-10-29T11:51:20+01:00", "utc": "1900-10-29T10:51:20Z", "ms": -2182943319916.9773 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 22:13 on Sun 28 Oct to 22:20 on Mon 29 Oct.", "fact": "1900-10-28T21:12:57Z → 1900-10-29T21:19:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:03–11:51 on the 28th, 11:03–11:51 on the 29th.", "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 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: unstated → only-day · margin 37293 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Budapest, 1900: Monday 29 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": "1900-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-29", "confidence": "determinate" } ], "quote": "In Budapest, Sūrya Ṣaṣṭhī (Chhath) 1900 falls on Monday 29 October. Ṣaṣṭhī runs from 22:13 on Sun 28 Oct to 22:20 on Mon 29 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31560, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1900-10-30T21:48:03+01:00", "utc": "1900-10-30T20:48:03Z", "ms": -2182821117082.1433 }, "end": { "local": "1900-10-31T20:37:15+01:00", "utc": "1900-10-31T19:37:15Z", "ms": -2182738965427.4653 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-30T21:48:03+01:00", "utc": "1900-10-30T20:48:03Z", "ms": -2182821117082.1433 }, "end": { "local": "1900-10-31T20:37:15+01:00", "utc": "1900-10-31T19:37:15Z", "ms": -2182738965427.4653 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-10-30", "window": { "start": { "local": "1900-10-30T11:03:17+01:00", "utc": "1900-10-30T10:03:17Z", "ms": -2182859803250.4688 }, "end": { "local": "1900-10-30T11:51:17+01:00", "utc": "1900-10-30T10:51:17Z", "ms": -2182856923250.4688 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-10-31", "window": { "start": { "local": "1900-10-31T11:03:14+01:00", "utc": "1900-10-31T10:03:14Z", "ms": -2182773405822.0195 }, "end": { "local": "1900-10-31T11:51:14+01:00", "utc": "1900-10-31T10:51:14Z", "ms": -2182770525822.0195 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 21:48 on Tue 30 Oct to 20:37 on Wed 31 Oct.", "fact": "1900-10-30T20:48:03Z → 1900-10-31T19:37:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:03–11:51 on the 30th, 11:03–11:51 on the 31st.", "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 30th and 48 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31560 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Budapest, 1900: Wednesday 31 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": "1900-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-10-31", "confidence": "determinate" } ], "quote": "In Budapest, Gopāṣṭamī 1900 falls on Wednesday 31 October. Aṣṭamī runs from 21:48 on Tue 30 Oct to 20:37 on Wed 31 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32473, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1900-10-31T20:37:15+01:00", "utc": "1900-10-31T19:37:15Z", "ms": -2182738965427.4653 }, "end": { "local": "1900-11-01T18:48:24+01:00", "utc": "1900-11-01T17:48:24Z", "ms": -2182659095510.1277 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-31T20:37:15+01:00", "utc": "1900-10-31T19:37:15Z", "ms": -2182738965427.4653 }, "end": { "local": "1900-11-01T18:48:24+01:00", "utc": "1900-11-01T17:48:24Z", "ms": -2182659095510.1277 } }, "kaala": "purvahna", "days": [ { "local_date": "1900-10-31", "window": { "start": { "local": "1900-10-31T06:25:39+01:00", "utc": "1900-10-31T05:25:39Z", "ms": -2182790061357.6003 }, "end": { "local": "1900-10-31T09:46:42+01:00", "utc": "1900-10-31T08:46:42Z", "ms": -2182777997667.2131 } }, "covered_min": 0, "window_min": 201, "qualifies": false }, { "local_date": "1900-11-01", "window": { "start": { "local": "1900-11-01T06:27:10+01:00", "utc": "1900-11-01T05:27:10Z", "ms": -2182703570491.4016 }, "end": { "local": "1900-11-01T09:47:11+01:00", "utc": "1900-11-01T08:47:11Z", "ms": -2182691568578.693 } }, "covered_min": 200, "window_min": 200, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 20:37 on Wed 31 Oct to 18:48 on Thu 1 Nov.", "fact": "1900-10-31T19:37:15Z → 1900-11-01T17:48:24Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:26–09:47 on the 31st, 06:27–09:47 on the 1st.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 0 of 201 minutes on the 31st and 200 of 200 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one forenoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32473 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Budapest, 1900: Thursday 1 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-01", "confidence": "determinate" } ], "quote": "In Budapest, Akṣaya Navamī (Amla Navami) 1900 falls on Thursday 1 November. Navamī runs from 20:37 on Wed 31 Oct to 18:48 on Thu 1 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25032, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1900-10-31T20:37:15+01:00", "utc": "1900-10-31T19:37:15Z", "ms": -2182738965427.4653 }, "end": { "local": "1900-11-01T18:48:24+01:00", "utc": "1900-11-01T17:48:24Z", "ms": -2182659095510.1277 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-10-31T20:37:15+01:00", "utc": "1900-10-31T19:37:15Z", "ms": -2182738965427.4653 }, "end": { "local": "1900-11-01T18:48:24+01:00", "utc": "1900-11-01T17:48:24Z", "ms": -2182659095510.1277 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-10-31", "window": { "start": { "local": "1900-10-31T11:03:14+01:00", "utc": "1900-10-31T10:03:14Z", "ms": -2182773405822.0195 }, "end": { "local": "1900-10-31T11:51:14+01:00", "utc": "1900-10-31T10:51:14Z", "ms": -2182770525822.0195 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-11-01", "window": { "start": { "local": "1900-11-01T11:03:12+01:00", "utc": "1900-11-01T10:03:12Z", "ms": -2182687007622.3389 }, "end": { "local": "1900-11-01T11:51:12+01:00", "utc": "1900-11-01T10:51:12Z", "ms": -2182684127622.3389 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 20:37 on Wed 31 Oct to 18:48 on Thu 1 Nov.", "fact": "1900-10-31T19:37:15Z → 1900-11-01T17:48:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:03–11:51 on the 31st, 11:03–11:51 on the 1st.", "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 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25032 s" }, { "step": "ruling", "text": "Durgā Navamī, Budapest, 1900: Thursday 1 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-01", "confidence": "determinate" } ], "quote": "In Budapest, Durgā Navamī 1900 falls on Thursday 1 November. Navamī runs from 20:37 on Wed 31 Oct to 18:48 on Thu 1 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-11-03", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25371, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-11-02T16:25:07+01:00", "utc": "1900-11-02T15:25:07Z", "ms": -2182581292769.3025 }, "end": { "local": "1900-11-03T13:33:03+01:00", "utc": "1900-11-03T12:33:03Z", "ms": -2182505217244.3572 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-11-02T16:25:07+01:00", "utc": "1900-11-02T15:25:07Z", "ms": -2182581292769.3025 }, "end": { "local": "1900-11-03T13:33:03+01:00", "utc": "1900-11-03T12:33:03Z", "ms": -2182505217244.3572 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-11-02", "window": { "start": { "local": "1900-11-02T06:28:40+01:00", "utc": "1900-11-02T05:28:40Z", "ms": -2182617079535.2568 }, "end": { "local": "1900-11-02T06:28:40+01:00", "utc": "1900-11-02T05:28:40Z", "ms": -2182617079535.2568 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-11-03", "window": { "start": { "local": "1900-11-03T06:30:11+01:00", "utc": "1900-11-03T05:30:11Z", "ms": -2182530588513.465 }, "end": { "local": "1900-11-03T06:30:11+01:00", "utc": "1900-11-03T05:30:11Z", "ms": -2182530588513.465 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:25 on Fri 2 Nov to 13:33 on Sat 3 Nov.", "fact": "1900-11-02T15:25:07Z → 1900-11-03T12:33:03Z" }, { "step": "kaala", "text": "Sunrise is at 06:29 on the 2nd and 06:30 on the 3rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 2nd and is on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25371 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Budapest, 1900: Saturday 3 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": "1900-11-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-03", "confidence": "determinate" } ], "quote": "In Budapest, Prabodhinī Ekādaśī 1900 falls on Saturday 3 November. Ekādaśī runs from 16:25 on Fri 2 Nov to 13:33 on Sat 3 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-11-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-11-04", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21789, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-11-04T10:19:32+01:00", "utc": "1900-11-04T09:19:32Z", "ms": -2182430428096.712 }, "end": { "local": "1900-11-05T06:53:09+01:00", "utc": "1900-11-05T05:53:09Z", "ms": -2182356410966.5762 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-11-04T10:19:32+01:00", "utc": "1900-11-04T09:19:32Z", "ms": -2182430428096.712 }, "end": { "local": "1900-11-05T06:53:09+01:00", "utc": "1900-11-05T05:53:09Z", "ms": -2182356410966.5762 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-11-04", "window": { "start": { "local": "1900-11-04T16:22:41+01:00", "utc": "1900-11-04T15:22:41Z", "ms": -2182408639144.604 }, "end": { "local": "1900-11-04T18:16:05+01:00", "utc": "1900-11-04T17:16:05Z", "ms": -2182401834774.541 } }, "covered_min": 113, "window_min": 113, "qualifies": true }, { "local_date": "1900-11-05", "window": { "start": { "local": "1900-11-05T16:21:13+01:00", "utc": "1900-11-05T15:21:13Z", "ms": -2182322327453.9348 }, "end": { "local": "1900-11-05T18:15:01+01:00", "utc": "1900-11-05T17:15:01Z", "ms": -2182315499166.0474 } }, "covered_min": 0, "window_min": 114, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:20 on Sun 4 Nov to 06:53 on Mon 5 Nov.", "fact": "1900-11-04T09:19:32Z → 1900-11-05T05:53:09Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:23–18:16 on the 4th, 16:21–18:15 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 113 of 113 minutes on the 4th and 0 of 114 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21789 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Budapest, 1900: Sunday 4 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": "1900-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-04", "confidence": "determinate" } ], "quote": "In Budapest, Śukla Pradoṣa Vrata 1900 falls on Sunday 4 November. Trayodaśī runs from 10:20 on Sun 4 Nov to 06:53 on Mon 5 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-11-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27599, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-11-06T03:23:16+01:00", "utc": "1900-11-06T02:23:16Z", "ms": -2182282604007.3347 }, "end": { "local": "1900-11-06T23:59:39+01:00", "utc": "1900-11-06T22:59:39Z", "ms": -2182208421434.886 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-11-06T03:23:16+01:00", "utc": "1900-11-06T02:23:16Z", "ms": -2182282604007.3347 }, "end": { "local": "1900-11-06T23:59:39+01:00", "utc": "1900-11-06T22:59:39Z", "ms": -2182208421434.886 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-11-06", "window": { "start": { "local": "1900-11-06T11:03:15+01:00", "utc": "1900-11-06T10:03:15Z", "ms": -2182255004701.4006 }, "end": { "local": "1900-11-06T11:51:15+01:00", "utc": "1900-11-06T10:51:15Z", "ms": -2182252124701.4006 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-11-07", "window": { "start": { "local": "1900-11-07T11:03:18+01:00", "utc": "1900-11-07T10:03:18Z", "ms": -2182168601655.607 }, "end": { "local": "1900-11-07T11:51:18+01:00", "utc": "1900-11-07T10:51:18Z", "ms": -2182165721655.607 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 03:23 on Tue 6 Nov to 00:00 on Tue 6 Nov.", "fact": "1900-11-06T02:23:16Z → 1900-11-06T22:59:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:03–11:51 on the 6th, 11:03–11:51 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 6th and 0 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27599 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Budapest, 1900: Tuesday 6 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": "1900-11-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-06", "confidence": "determinate" } ], "quote": "In Budapest, Kārtikī Pūrṇimā 1900 falls on Tuesday 6 November. Pūrṇimā runs from 03:23 on Tue 6 Nov to 00:00 on Tue 6 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 458, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-11-06T03:23:16+01:00", "utc": "1900-11-06T02:23:16Z", "ms": -2182282604007.3347 }, "end": { "local": "1900-11-06T23:59:39+01:00", "utc": "1900-11-06T22:59:39Z", "ms": -2182208421434.886 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1900-11-06T03:23:16+01:00", "utc": "1900-11-06T02:23:16Z", "ms": -2182282604007.3347 }, "end": { "local": "1900-11-06T23:59:39+01:00", "utc": "1900-11-06T22:59:39Z", "ms": -2182208421434.886 } }, "kaala": "nishita", "days": [ { "local_date": "1900-11-05", "window": { "start": { "local": "1900-11-05T23:03:59+01:00", "utc": "1900-11-05T22:03:59Z", "ms": -2182298161374.3567 }, "end": { "local": "1900-11-05T23:51:59+01:00", "utc": "1900-11-05T22:51:59Z", "ms": -2182295281374.3567 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-11-06", "window": { "start": { "local": "1900-11-06T23:04:01+01:00", "utc": "1900-11-06T22:04:01Z", "ms": -2182211759180.2898 }, "end": { "local": "1900-11-06T23:52:01+01:00", "utc": "1900-11-06T22:52:01Z", "ms": -2182208879180.2898 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 03:23 on Tue 6 Nov to 00:00 on Tue 6 Nov.", "fact": "1900-11-06T02:23:16Z → 1900-11-06T22:59:39Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:04–23:52 on the 5th, 23:04–23:52 on the 6th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during niśītha. It covers 0 of 48 minutes on the 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 458 s" }, { "step": "ruling", "text": "Rāsayātrā, Budapest, 1900: Tuesday 6 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": "1900-11-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-06", "confidence": "boundary" } ], "quote": "In Budapest, Rāsayātrā 1900 falls on Tuesday 6 November. Pūrṇimā runs from 03:23 on Tue 6 Nov to 00:00 on Tue 6 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/sankashta-chaturthi?on=1900-11-09", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8745, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-11-09T16:01:53+01:00", "utc": "1900-11-09T15:01:53Z", "ms": -2181977886998.6448 }, "end": { "local": "1900-11-10T14:34:56+01:00", "utc": "1900-11-10T13:34:56Z", "ms": -2181896703556.9395 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-11-09T16:01:53+01:00", "utc": "1900-11-09T15:01:53Z", "ms": -2181977886998.6448 }, "end": { "local": "1900-11-10T14:34:56+01:00", "utc": "1900-11-10T13:34:56Z", "ms": -2181896703556.9395 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-11-09", "window": { "start": { "local": "1900-11-09T18:27:38+01:00", "utc": "1900-11-09T17:27:38Z", "ms": -2181969142140.1055 }, "end": { "local": "1900-11-09T18:27:38+01:00", "utc": "1900-11-09T17:27:38Z", "ms": -2181969142140.1055 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-11-10", "window": { "start": { "local": "1900-11-10T19:31:29+01:00", "utc": "1900-11-10T18:31:29Z", "ms": -2181878910824.6064 }, "end": { "local": "1900-11-10T19:31:29+01:00", "utc": "1900-11-10T18:31:29Z", "ms": -2181878910824.6064 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:02 on Fri 9 Nov to 14:35 on Sat 10 Nov.", "fact": "1900-11-09T15:01:53Z → 1900-11-10T13:34:56Z" }, { "step": "kaala", "text": "Moonrise is at 18:28 on the 9th and 19:31 on the 10th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 9th and is not on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8745 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Budapest, 1900: Friday 9 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": "1900-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-09", "confidence": "determinate" } ], "quote": "In Budapest, Saṅkaṣṭa Caturthī 1900 falls on Friday 9 November. Caturthī runs from 16:02 on Fri 9 Nov to 14:35 on Sat 10 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/sankashta-chaturthi?on=1900-11-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/ekadashi?on=1900-11-17", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26004, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-11-16T21:03:11+01:00", "utc": "1900-11-16T20:03:11Z", "ms": -2181355008511.7263 }, "end": { "local": "1900-11-17T23:39:21+01:00", "utc": "1900-11-17T22:39:21Z", "ms": -2181259239469.0154 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-11-16T21:03:11+01:00", "utc": "1900-11-16T20:03:11Z", "ms": -2181355008511.7263 }, "end": { "local": "1900-11-17T23:39:21+01:00", "utc": "1900-11-17T22:39:21Z", "ms": -2181259239469.0154 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-11-17", "window": { "start": { "local": "1900-11-17T06:51:17+01:00", "utc": "1900-11-17T05:51:17Z", "ms": -2181319723340.9238 }, "end": { "local": "1900-11-17T06:51:17+01:00", "utc": "1900-11-17T05:51:17Z", "ms": -2181319723340.9238 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-11-18", "window": { "start": { "local": "1900-11-18T06:52:45+01:00", "utc": "1900-11-18T05:52:45Z", "ms": -2181233235196.5952 }, "end": { "local": "1900-11-18T06:52:45+01:00", "utc": "1900-11-18T05:52:45Z", "ms": -2181233235196.5952 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:03 on Fri 16 Nov to 23:39 on Sat 17 Nov.", "fact": "1900-11-16T20:03:11Z → 1900-11-17T22:39:21Z" }, { "step": "kaala", "text": "Sunrise is at 06:51 on the 17th and 06:53 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 17th and is not on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26004 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Budapest, 1900: Saturday 17 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": "1900-11-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-17", "confidence": "determinate" } ], "quote": "In Budapest, Utpannā Ekādaśī 1900 falls on Saturday 17 November. Ekādaśī runs from 21:03 on Fri 16 Nov to 23:39 on Sat 17 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-11-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-11-19", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29370, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-11-19T02:12:57+01:00", "utc": "1900-11-19T01:12:57Z", "ms": -2181163622974.1292 }, "end": { "local": "1900-11-20T04:34:39+01:00", "utc": "1900-11-20T03:34:39Z", "ms": -2181068721247.6926 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-11-19T02:12:57+01:00", "utc": "1900-11-19T01:12:57Z", "ms": -2181163622974.1292 }, "end": { "local": "1900-11-20T04:34:39+01:00", "utc": "1900-11-20T03:34:39Z", "ms": -2181068721247.6926 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-11-18", "window": { "start": { "local": "1900-11-18T16:04:53+01:00", "utc": "1900-11-18T15:04:53Z", "ms": -2181200107106.2053 }, "end": { "local": "1900-11-18T18:03:27+01:00", "utc": "1900-11-18T17:03:27Z", "ms": -2181192992508.2593 } }, "covered_min": 0, "window_min": 119, "qualifies": false }, { "local_date": "1900-11-19", "window": { "start": { "local": "1900-11-19T16:03:52+01:00", "utc": "1900-11-19T15:03:52Z", "ms": -2181113767850.0923 }, "end": { "local": "1900-11-19T18:02:46+01:00", "utc": "1900-11-19T17:02:46Z", "ms": -2181106633560.379 } }, "covered_min": 119, "window_min": 119, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:13 on Mon 19 Nov to 04:35 on Tue 20 Nov.", "fact": "1900-11-19T01:12:57Z → 1900-11-20T03:34:39Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 16:05–18:03 on the 18th, 16:04–18:03 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 119 minutes on the 18th and 119 of 119 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29370 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Budapest, 1900: Monday 19 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": "1900-11-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-19", "confidence": "determinate" } ], "quote": "In Budapest, Kṛṣṇa Pradoṣa Vrata 1900 falls on Monday 19 November. Trayodaśī runs from 02:13 on Mon 19 Nov to 04:35 on Tue 20 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-11-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/shivaratri?on=1900-11-20", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16853, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-11-20T04:34:39+01:00", "utc": "1900-11-20T03:34:39Z", "ms": -2181068721247.6926 }, "end": { "local": "1900-11-21T06:37:32+01:00", "utc": "1900-11-21T05:37:32Z", "ms": -2180974948278.6982 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-11-20T04:34:39+01:00", "utc": "1900-11-20T03:34:39Z", "ms": -2181068721247.6926 }, "end": { "local": "1900-11-21T06:37:32+01:00", "utc": "1900-11-21T05:37:32Z", "ms": -2180974948278.6982 } }, "kaala": "nishita", "days": [ { "local_date": "1900-11-19", "window": { "start": { "local": "1900-11-19T23:05:46+01:00", "utc": "1900-11-19T22:05:46Z", "ms": -2181088454263.6672 }, "end": { "local": "1900-11-19T23:53:46+01:00", "utc": "1900-11-19T22:53:46Z", "ms": -2181085574263.6672 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-11-20", "window": { "start": { "local": "1900-11-20T23:06:00+01:00", "utc": "1900-11-20T22:06:00Z", "ms": -2181002040355.146 }, "end": { "local": "1900-11-20T23:54:00+01:00", "utc": "1900-11-20T22:54:00Z", "ms": -2180999160355.146 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:35 on Tue 20 Nov to 06:38 on Wed 21 Nov.", "fact": "1900-11-20T03:34:39Z → 1900-11-21T05:37:32Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:06–23:54 on the 19th, 23:06–23:54 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 16853 s" }, { "step": "ruling", "text": "Śivarātri, Budapest, 1900: Tuesday 20 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": "1900-11-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-20", "confidence": "determinate" } ], "quote": "In Budapest, Śivarātri 1900 falls on Tuesday 20 November. Caturdaśī runs from 04:35 on Tue 20 Nov to 06:38 on Wed 21 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/budapest/festivals/1900/shivaratri?on=1900-11-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/vinayaka-chaturthi?on=1900-11-25", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1780, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-11-25T10:37:00+01:00", "utc": "1900-11-25T09:37:00Z", "ms": -2180614980258.892 }, "end": { "local": "1900-11-26T10:29:08+01:00", "utc": "1900-11-26T09:29:08Z", "ms": -2180529052459.563 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-11-25T10:37:00+01:00", "utc": "1900-11-25T09:37:00Z", "ms": -2180614980258.892 }, "end": { "local": "1900-11-26T10:29:08+01:00", "utc": "1900-11-26T09:29:08Z", "ms": -2180529052459.563 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-11-25", "window": { "start": { "local": "1900-11-25T11:06:40+01:00", "utc": "1900-11-25T10:06:40Z", "ms": -2180613200052.854 }, "end": { "local": "1900-11-25T11:54:40+01:00", "utc": "1900-11-25T10:54:40Z", "ms": -2180610320052.854 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-11-26", "window": { "start": { "local": "1900-11-26T11:06:59+01:00", "utc": "1900-11-26T10:06:59Z", "ms": -2180526781047.0232 }, "end": { "local": "1900-11-26T11:54:59+01:00", "utc": "1900-11-26T10:54:59Z", "ms": -2180523901047.0232 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:37 on Sun 25 Nov to 10:29 on Mon 26 Nov.", "fact": "1900-11-25T09:37:00Z → 1900-11-26T09:29:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:07–11:55 on the 25th, 11:07–11:55 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 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. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1780 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Budapest, 1900: Sunday 25 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": "1900-11-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-25", "confidence": "boundary" } ], "quote": "In Budapest, Vināyaka Caturthī 1900 falls on Sunday 25 November. Caturthī runs from 10:37 on Sun 25 Nov to 10:29 on Mon 26 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/vinayaka-chaturthi?on=1900-11-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2271, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1900-11-26T10:29:08+01:00", "utc": "1900-11-26T09:29:08Z", "ms": -2180529052459.563 }, "end": { "local": "1900-11-27T09:54:21+01:00", "utc": "1900-11-27T08:54:21Z", "ms": -2180444739122.5203 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-11-26T10:29:08+01:00", "utc": "1900-11-26T09:29:08Z", "ms": -2180529052459.563 }, "end": { "local": "1900-11-27T09:54:21+01:00", "utc": "1900-11-27T08:54:21Z", "ms": -2180444739122.5203 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-11-26", "window": { "start": { "local": "1900-11-26T11:06:59+01:00", "utc": "1900-11-26T10:06:59Z", "ms": -2180526781047.0232 }, "end": { "local": "1900-11-26T11:54:59+01:00", "utc": "1900-11-26T10:54:59Z", "ms": -2180523901047.0232 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-11-27", "window": { "start": { "local": "1900-11-27T11:07:19+01:00", "utc": "1900-11-27T10:07:19Z", "ms": -2180440361309.598 }, "end": { "local": "1900-11-27T11:55:19+01:00", "utc": "1900-11-27T10:55:19Z", "ms": -2180437481309.598 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 10:29 on Mon 26 Nov to 09:54 on Tue 27 Nov.", "fact": "1900-11-26T09:29:08Z → 1900-11-27T08:54:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:07–11:55 on the 26th, 11:07–11:55 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 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: paraviddha → only-day · margin 2271 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Budapest, 1900: Monday 26 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": "1900-11-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-26", "confidence": "determinate" } ], "quote": "In Budapest, Nāga Pañcamī (Mārgaśīrṣa) 1900 falls on Monday 26 November. Pañcamī runs from 10:29 on Mon 26 Nov to 09:54 on Tue 27 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4378, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1900-11-27T09:54:21+01:00", "utc": "1900-11-27T08:54:21Z", "ms": -2180444739122.5203 }, "end": { "local": "1900-11-28T08:53:18+01:00", "utc": "1900-11-28T07:53:18Z", "ms": -2180362001670.5667 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-11-27T09:54:21+01:00", "utc": "1900-11-27T08:54:21Z", "ms": -2180444739122.5203 }, "end": { "local": "1900-11-28T08:53:18+01:00", "utc": "1900-11-28T07:53:18Z", "ms": -2180362001670.5667 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-11-27", "window": { "start": { "local": "1900-11-27T11:07:19+01:00", "utc": "1900-11-27T10:07:19Z", "ms": -2180440361309.598 }, "end": { "local": "1900-11-27T11:55:19+01:00", "utc": "1900-11-27T10:55:19Z", "ms": -2180437481309.598 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-11-28", "window": { "start": { "local": "1900-11-28T11:07:39+01:00", "utc": "1900-11-28T10:07:39Z", "ms": -2180353940860.0427 }, "end": { "local": "1900-11-28T11:55:39+01:00", "utc": "1900-11-28T10:55:39Z", "ms": -2180351060860.0427 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 09:54 on Tue 27 Nov to 08:53 on Wed 28 Nov.", "fact": "1900-11-27T08:54:21Z → 1900-11-28T07:53:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:07–11:55 on the 27th, 11:08–11:56 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 4378 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Budapest, 1900: Tuesday 27 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": "1900-11-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-27", "confidence": "determinate" } ], "quote": "In Budapest, Campā Ṣaṣṭhī 1900 falls on Tuesday 27 November. Ṣaṣṭhī runs from 09:54 on Tue 27 Nov to 08:53 on Wed 28 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4378, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1900-11-27T09:54:21+01:00", "utc": "1900-11-27T08:54:21Z", "ms": -2180444739122.5203 }, "end": { "local": "1900-11-28T08:53:18+01:00", "utc": "1900-11-28T07:53:18Z", "ms": -2180362001670.5667 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-11-27T09:54:21+01:00", "utc": "1900-11-27T08:54:21Z", "ms": -2180444739122.5203 }, "end": { "local": "1900-11-28T08:53:18+01:00", "utc": "1900-11-28T07:53:18Z", "ms": -2180362001670.5667 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-11-27", "window": { "start": { "local": "1900-11-27T11:07:19+01:00", "utc": "1900-11-27T10:07:19Z", "ms": -2180440361309.598 }, "end": { "local": "1900-11-27T11:55:19+01:00", "utc": "1900-11-27T10:55:19Z", "ms": -2180437481309.598 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-11-28", "window": { "start": { "local": "1900-11-28T11:07:39+01:00", "utc": "1900-11-28T10:07:39Z", "ms": -2180353940860.0427 }, "end": { "local": "1900-11-28T11:55:39+01:00", "utc": "1900-11-28T10:55:39Z", "ms": -2180351060860.0427 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 09:54 on Tue 27 Nov to 08:53 on Wed 28 Nov.", "fact": "1900-11-27T08:54:21Z → 1900-11-28T07:53:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:07–11:55 on the 27th, 11:08–11:56 on the 28th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 4378 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Budapest, 1900: Tuesday 27 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": "1900-11-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-27", "confidence": "determinate" } ], "quote": "In Budapest, Skanda Ṣaṣṭhī 1900 falls on Tuesday 27 November. Ṣaṣṭhī runs from 09:54 on Tue 27 Nov to 08:53 on Wed 28 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-11-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8061, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1900-11-28T08:53:18+01:00", "utc": "1900-11-28T07:53:18Z", "ms": -2180362001670.5667 }, "end": { "local": "1900-11-29T07:27:05+01:00", "utc": "1900-11-29T06:27:05Z", "ms": -2180280774986.6045 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-11-28T08:53:18+01:00", "utc": "1900-11-28T07:53:18Z", "ms": -2180362001670.5667 }, "end": { "local": "1900-11-29T07:27:05+01:00", "utc": "1900-11-29T06:27:05Z", "ms": -2180280774986.6045 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-11-28", "window": { "start": { "local": "1900-11-28T11:07:39+01:00", "utc": "1900-11-28T10:07:39Z", "ms": -2180353940860.0427 }, "end": { "local": "1900-11-28T11:55:39+01:00", "utc": "1900-11-28T10:55:39Z", "ms": -2180351060860.0427 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1900-11-29", "window": { "start": { "local": "1900-11-29T11:08:00+01:00", "utc": "1900-11-29T10:08:00Z", "ms": -2180267519718.174 }, "end": { "local": "1900-11-29T11:56:00+01:00", "utc": "1900-11-29T10:56:00Z", "ms": -2180264639718.174 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 08:53 on Wed 28 Nov to 07:27 on Thu 29 Nov.", "fact": "1900-11-28T07:53:18Z → 1900-11-29T06:27:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:08–11:56 on the 28th, 11:08–11:56 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 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: purvaviddha → only-day · margin 8061 s" }, { "step": "ruling", "text": "Mitra Saptamī, Budapest, 1900: Wednesday 28 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": "1900-11-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-11-28", "confidence": "determinate" } ], "quote": "In Budapest, Mitra Saptamī 1900 falls on Wednesday 28 November. Saptamī runs from 08:53 on Wed 28 Nov to 07:27 on Thu 29 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/ekadashi?on=1900-12-02", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-12-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22355, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-12-02T00:59:14+01:00", "utc": "1900-12-01T23:59:14Z", "ms": -2180044846303.8647 }, "end": { "local": "1900-12-02T22:18:57+01:00", "utc": "1900-12-02T21:18:57Z", "ms": -2179968062786.2148 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-12-02T00:59:14+01:00", "utc": "1900-12-01T23:59:14Z", "ms": -2180044846303.8647 }, "end": { "local": "1900-12-02T22:18:57+01:00", "utc": "1900-12-02T21:18:57Z", "ms": -2179968062786.2148 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-12-02", "window": { "start": { "local": "1900-12-02T07:11:49+01:00", "utc": "1900-12-02T06:11:49Z", "ms": -2180022491212.5957 }, "end": { "local": "1900-12-02T07:11:49+01:00", "utc": "1900-12-02T06:11:49Z", "ms": -2180022491212.5957 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1900-12-03", "window": { "start": { "local": "1900-12-03T07:13:01+01:00", "utc": "1900-12-03T06:13:01Z", "ms": -2179936018734.1064 }, "end": { "local": "1900-12-03T07:13:01+01:00", "utc": "1900-12-03T06:13:01Z", "ms": -2179936018734.1064 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:59 on Sun 2 Dec to 22:19 on Sun 2 Dec.", "fact": "1900-12-01T23:59:14Z → 1900-12-02T21:18:57Z" }, { "step": "kaala", "text": "Sunrise is at 07:12 on the 2nd and 07:13 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 22355 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Budapest, 1900: Sunday 2 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": "1900-12-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-12-02", "confidence": "determinate" } ], "quote": "In Budapest, Mokṣadā Ekādaśī 1900 falls on Sunday 2 December. Ekādaśī runs from 00:59 on Sun 2 Dec to 22:19 on Sun 2 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-12-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-12-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27256, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1900-12-02T22:18:57+01:00", "utc": "1900-12-02T21:18:57Z", "ms": -2179968062786.2148 }, "end": { "local": "1900-12-03T19:31:47+01:00", "utc": "1900-12-03T18:31:47Z", "ms": -2179891692819.0068 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-12-02T22:18:57+01:00", "utc": "1900-12-02T21:18:57Z", "ms": -2179968062786.2148 }, "end": { "local": "1900-12-03T19:31:47+01:00", "utc": "1900-12-03T18:31:47Z", "ms": -2179891692819.0068 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-12-02", "window": { "start": { "local": "1900-12-02T11:09:08+01:00", "utc": "1900-12-02T10:09:08Z", "ms": -2180008252337.7021 }, "end": { "local": "1900-12-02T11:57:08+01:00", "utc": "1900-12-02T10:57:08Z", "ms": -2180005372337.7021 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-12-03", "window": { "start": { "local": "1900-12-03T11:09:31+01:00", "utc": "1900-12-03T10:09:31Z", "ms": -2179921828624.8198 }, "end": { "local": "1900-12-03T11:57:31+01:00", "utc": "1900-12-03T10:57:31Z", "ms": -2179918948624.8198 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 22:19 on Sun 2 Dec to 19:32 on Mon 3 Dec.", "fact": "1900-12-02T21:18:57Z → 1900-12-03T18:31:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:09–11:57 on the 2nd, 11:10–11:58 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 2nd and 48 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27256 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Budapest, 1900: Monday 3 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akhanda-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Matsya dvadasi, Akhanda dvadasi (paraviddha), Vyanjana dvadasi & Dana dvadasi (Orissa)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-12-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-12-03", "confidence": "determinate" } ], "quote": "In Budapest, Akhaṇḍa Dvādaśī 1900 falls on Monday 3 December. Dvādaśī runs from 22:19 on Sun 2 Dec to 19:32 on Mon 3 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/pradosha-vrata?on=1900-12-04", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-12-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3039, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-12-03T19:31:47+01:00", "utc": "1900-12-03T18:31:47Z", "ms": -2179891692819.0068 }, "end": { "local": "1900-12-04T16:44:18+01:00", "utc": "1900-12-04T15:44:18Z", "ms": -2179815341863.2039 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-12-03T19:31:47+01:00", "utc": "1900-12-03T18:31:47Z", "ms": -2179891692819.0068 }, "end": { "local": "1900-12-04T16:44:18+01:00", "utc": "1900-12-04T15:44:18Z", "ms": -2179815341863.2039 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-12-03", "window": { "start": { "local": "1900-12-03T15:54:01+01:00", "utc": "1900-12-03T14:54:01Z", "ms": -2179904758515.533 }, "end": { "local": "1900-12-03T17:56:43+01:00", "utc": "1900-12-03T16:56:43Z", "ms": -2179897397094.678 } }, "covered_min": 0, "window_min": 123, "qualifies": false }, { "local_date": "1900-12-04", "window": { "start": { "local": "1900-12-04T15:53:39+01:00", "utc": "1900-12-04T14:53:39Z", "ms": -2179818380776.5723 }, "end": { "local": "1900-12-04T17:56:33+01:00", "utc": "1900-12-04T16:56:33Z", "ms": -2179811007160.056 } }, "covered_min": 51, "window_min": 123, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:32 on Mon 3 Dec to 16:44 on Tue 4 Dec.", "fact": "1900-12-03T18:31:47Z → 1900-12-04T15:44:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 15:54–17:57 on the 3rd, 15:54–17:57 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 123 minutes on the 3rd and 51 of 123 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 3039 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Budapest, 1900: Tuesday 4 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": "1900-12-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-12-04", "confidence": "determinate" } ], "quote": "In Budapest, Śukla Pradoṣa Vrata 1900 falls on Tuesday 4 December. Trayodaśī runs from 19:32 on Mon 3 Dec to 16:44 on Tue 4 Dec and covers 51 of 123 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-12-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-12-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6571, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1900-12-05T14:03:49+01:00", "utc": "1900-12-05T13:03:49Z", "ms": -2179738571483.505 }, "end": { "local": "1900-12-06T11:38:06+01:00", "utc": "1900-12-06T10:38:06Z", "ms": -2179660913551.6423 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-12-05T14:03:49+01:00", "utc": "1900-12-05T13:03:49Z", "ms": -2179738571483.505 }, "end": { "local": "1900-12-06T11:38:06+01:00", "utc": "1900-12-06T10:38:06Z", "ms": -2179660913551.6423 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-12-05", "window": { "start": { "local": "1900-12-05T15:53:20+01:00", "utc": "1900-12-05T14:53:20Z", "ms": -2179732000219.5452 }, "end": { "local": "1900-12-05T17:56:25+01:00", "utc": "1900-12-05T16:56:25Z", "ms": -2179724615014.1743 } }, "covered_min": 123, "window_min": 123, "qualifies": true }, { "local_date": "1900-12-06", "window": { "start": { "local": "1900-12-06T15:53:03+01:00", "utc": "1900-12-06T14:53:03Z", "ms": -2179645616819.5461 }, "end": { "local": "1900-12-06T17:56:19+01:00", "utc": "1900-12-06T16:56:19Z", "ms": -2179638220644.022 } }, "covered_min": 0, "window_min": 123, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 14:04 on Wed 5 Dec to 11:38 on Thu 6 Dec.", "fact": "1900-12-05T13:03:49Z → 1900-12-06T10:38:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 15:53–17:56 on the 5th, 15:53–17:56 on the 6th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 123 of 123 minutes on the 5th and 0 of 123 on the 6th.", "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 6571 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Budapest, 1900: Wednesday 5 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": "1900-12-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-12-05", "confidence": "determinate" } ], "quote": "In Budapest, Dattātreyotpatti (Datta Jayanti) 1900 falls on Wednesday 5 December. Pūrṇimā runs from 14:04 on Wed 5 Dec to 11:38 on Thu 6 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/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": "/budapest/festivals/1900/sankashta-chaturthi?on=1900-12-09", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-12-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 41380, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-12-09T07:07:27+01:00", "utc": "1900-12-09T06:07:27Z", "ms": -2179417952503.942 }, "end": { "local": "1900-12-10T06:54:32+01:00", "utc": "1900-12-10T05:54:32Z", "ms": -2179332328157.327 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-12-09T07:07:27+01:00", "utc": "1900-12-09T06:07:27Z", "ms": -2179417952503.942 }, "end": { "local": "1900-12-10T06:54:32+01:00", "utc": "1900-12-10T05:54:32Z", "ms": -2179332328157.327 } }, "kaala": "moonrise", "days": [ { "local_date": "1900-12-08", "window": { "start": { "local": "1900-12-08T18:16:46+01:00", "utc": "1900-12-08T17:16:46Z", "ms": -2179464194426.6821 }, "end": { "local": "1900-12-08T18:16:46+01:00", "utc": "1900-12-08T17:16:46Z", "ms": -2179464194426.6821 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-12-09", "window": { "start": { "local": "1900-12-09T19:24:52+01:00", "utc": "1900-12-09T18:24:52Z", "ms": -2179373708168.4998 }, "end": { "local": "1900-12-09T19:24:52+01:00", "utc": "1900-12-09T18:24:52Z", "ms": -2179373708168.4998 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:07 on Sun 9 Dec to 06:55 on Mon 10 Dec.", "fact": "1900-12-09T06:07:27Z → 1900-12-10T05:54:32Z" }, { "step": "kaala", "text": "Moonrise is at 18:17 on the 8th and 19:25 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 41380 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Budapest, 1900: Sunday 9 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": "1900-12-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-12-09", "confidence": "determinate" } ], "quote": "In Budapest, Saṅkaṣṭa Caturthī 1900 falls on Sunday 9 December. Caturthī runs from 07:07 on Sun 9 Dec to 06:55 on Mon 10 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/sankashta-chaturthi?on=1900-12-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/ekadashi?on=1900-12-17", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-12-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38488, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1900-12-16T18:07:22+01:00", "utc": "1900-12-16T17:07:22Z", "ms": -2178773557778.1765 }, "end": { "local": "1900-12-17T20:30:07+01:00", "utc": "1900-12-17T19:30:07Z", "ms": -2178678593325.4802 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-12-16T18:07:22+01:00", "utc": "1900-12-16T17:07:22Z", "ms": -2178773557778.1765 }, "end": { "local": "1900-12-17T20:30:07+01:00", "utc": "1900-12-17T19:30:07Z", "ms": -2178678593325.4802 } }, "kaala": "sunrise", "days": [ { "local_date": "1900-12-16", "window": { "start": { "local": "1900-12-16T07:25:54+01:00", "utc": "1900-12-16T06:25:54Z", "ms": -2178812045830.3596 }, "end": { "local": "1900-12-16T07:25:54+01:00", "utc": "1900-12-16T06:25:54Z", "ms": -2178812045830.3596 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1900-12-17", "window": { "start": { "local": "1900-12-17T07:26:38+01:00", "utc": "1900-12-17T06:26:38Z", "ms": -2178725601592.224 }, "end": { "local": "1900-12-17T07:26:38+01:00", "utc": "1900-12-17T06:26:38Z", "ms": -2178725601592.224 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:07 on Sun 16 Dec to 20:30 on Mon 17 Dec.", "fact": "1900-12-16T17:07:22Z → 1900-12-17T19:30:07Z" }, { "step": "kaala", "text": "Sunrise is at 07:26 on the 16th and 07:27 on the 17th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 16th and is on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38488 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Budapest, 1900: Monday 17 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": "1900-12-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-12-17", "confidence": "determinate" } ], "quote": "In Budapest, Saphalā Ekādaśī 1900 falls on Monday 17 December. Ekādaśī runs from 18:07 on Sun 16 Dec to 20:30 on Mon 17 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/budapest/festivals/1900/ekadashi?on=1900-12-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/pradosha-vrata?on=1900-12-19", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-12-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16212, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1900-12-18T22:28:18+01:00", "utc": "1900-12-18T21:28:18Z", "ms": -2178585101621.5955 }, "end": { "local": "1900-12-19T23:54:36+01:00", "utc": "1900-12-19T22:54:36Z", "ms": -2178493523901.2026 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-12-18T22:28:18+01:00", "utc": "1900-12-18T21:28:18Z", "ms": -2178585101621.5955 }, "end": { "local": "1900-12-19T23:54:36+01:00", "utc": "1900-12-19T22:54:36Z", "ms": -2178493523901.2026 } }, "kaala": "pradosha", "days": [ { "local_date": "1900-12-18", "window": { "start": { "local": "1900-12-18T15:53:31+01:00", "utc": "1900-12-18T14:53:31Z", "ms": -2178608789048.6636 }, "end": { "local": "1900-12-18T17:58:07+01:00", "utc": "1900-12-18T16:58:07Z", "ms": -2178601313249.9814 } }, "covered_min": 0, "window_min": 125, "qualifies": false }, { "local_date": "1900-12-19", "window": { "start": { "local": "1900-12-19T15:53:52+01:00", "utc": "1900-12-19T14:53:52Z", "ms": -2178522367813.2317 }, "end": { "local": "1900-12-19T17:58:30+01:00", "utc": "1900-12-19T16:58:30Z", "ms": -2178514889953.0215 } }, "covered_min": 125, "window_min": 125, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:28 on Tue 18 Dec to 23:55 on Wed 19 Dec.", "fact": "1900-12-18T21:28:18Z → 1900-12-19T22:54:36Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 15:54–17:58 on the 18th, 15:54–17:59 on the 19th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 125 minutes on the 18th and 125 of 125 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16212 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Budapest, 1900: Wednesday 19 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": "1900-12-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-12-19", "confidence": "determinate" } ], "quote": "In Budapest, Kṛṣṇa Pradoṣa Vrata 1900 falls on Wednesday 19 December. Trayodaśī runs from 22:28 on Tue 18 Dec to 23:55 on Wed 19 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/budapest/festivals/1900/pradosha-vrata?on=1900-12-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/shivaratri?on=1900-12-20", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-12-20", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 638, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1900-12-19T23:54:36+01:00", "utc": "1900-12-19T22:54:36Z", "ms": -2178493523901.2026 }, "end": { "local": "1900-12-21T00:45:35+01:00", "utc": "1900-12-20T23:45:35Z", "ms": -2178404065201.4768 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-12-19T23:54:36+01:00", "utc": "1900-12-19T22:54:36Z", "ms": -2178493523901.2026 }, "end": { "local": "1900-12-21T00:45:35+01:00", "utc": "1900-12-20T23:45:35Z", "ms": -2178404065201.4768 } }, "kaala": "nishita", "days": [ { "local_date": "1900-12-19", "window": { "start": { "local": "1900-12-19T23:17:14+01:00", "utc": "1900-12-19T22:17:14Z", "ms": -2178495765837.4434 }, "end": { "local": "1900-12-20T00:05:14+01:00", "utc": "1900-12-19T23:05:14Z", "ms": -2178492885837.4434 } }, "covered_min": 11, "window_min": 48, "qualifies": true }, { "local_date": "1900-12-20", "window": { "start": { "local": "1900-12-20T23:17:43+01:00", "utc": "1900-12-20T22:17:43Z", "ms": -2178409336755.2065 }, "end": { "local": "1900-12-21T00:05:43+01:00", "utc": "1900-12-20T23:05:43Z", "ms": -2178406456755.2065 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:55 on Wed 19 Dec to 00:46 on Fri 21 Dec.", "fact": "1900-12-19T22:54:36Z → 1900-12-20T23:45:35Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:17–00:05 on the 19th, 23:18–00:06 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 11 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": "Both nights qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 638 s" }, { "step": "ruling", "text": "Śivarātri, Budapest, 1900: Thursday 20 December.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1900-12-20", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-12-20", "confidence": "boundary" } ], "quote": "In Budapest, Śivarātri 1900 falls on Thursday 20 December. Caturdaśī runs from 23:55 on Wed 19 Dec to 00:46 on Fri 21 Dec and covers all of niśītha that night. It also reaches the previous night for 11 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/budapest/festivals/1900/shivaratri?on=1900-12-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/budapest/festivals/1900/vinayaka-chaturthi?on=1900-12-25", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "3054643", "year": 1900, "local_date": "1900-12-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33197, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1900-12-24T22:49:12+01:00", "utc": "1900-12-24T21:49:12Z", "ms": -2178065448222.448 }, "end": { "local": "1900-12-25T21:21:16+01:00", "utc": "1900-12-25T20:21:16Z", "ms": -2177984323762.8994 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1900-12-24T22:49:12+01:00", "utc": "1900-12-24T21:49:12Z", "ms": -2178065448222.448 }, "end": { "local": "1900-12-25T21:21:16+01:00", "utc": "1900-12-25T20:21:16Z", "ms": -2177984323762.8994 } }, "kaala": "madhyahna", "days": [ { "local_date": "1900-12-24", "window": { "start": { "local": "1900-12-24T11:19:28+01:00", "utc": "1900-12-24T10:19:28Z", "ms": -2178106831637.344 }, "end": { "local": "1900-12-24T12:07:28+01:00", "utc": "1900-12-24T11:07:28Z", "ms": -2178103951637.344 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1900-12-25", "window": { "start": { "local": "1900-12-25T11:19:59+01:00", "utc": "1900-12-25T10:19:59Z", "ms": -2178020401139.5254 }, "end": { "local": "1900-12-25T12:07:59+01:00", "utc": "1900-12-25T11:07:59Z", "ms": -2178017521139.5254 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:49 on Mon 24 Dec to 21:21 on Tue 25 Dec.", "fact": "1900-12-24T21:49:12Z → 1900-12-25T20:21:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:19–12:07 on the 24th, 11:20–12:08 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 0 of 48 minutes on the 24th and 48 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33197 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Budapest, 1900: Tuesday 25 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": "1900-12-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1900-12-25", "confidence": "determinate" } ], "quote": "In Budapest, Vināyaka Caturthī 1900 falls on Tuesday 25 December. Caturthī runs from 22:49 on Mon 24 Dec to 21:21 on Tue 25 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/budapest/festivals/1900/vinayaka-chaturthi?on=1900-12-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } } ], "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }