{ "id": "/lu-an/festivals/2018", "place": { "id": "1802206", "slug": "lu-an", "name": "Lu’an", "region": "Anhui, China", "country": "CN", "lat": 31.73561, "lon": 116.51688, "elevation_m": 81, "tz": "Asia/Shanghai" }, "year": 2018, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/lu-an/festivals/2018/sankashta-chaturthi?on=2018-01-05", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1349, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-01-05T00:01:58+08:00", "utc": "2018-01-04T16:01:58Z", "ms": 1515081718261.4683 }, "end": { "local": "2018-01-05T21:30:17+08:00", "utc": "2018-01-05T13:30:17Z", "ms": 1515159016720.1775 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-05T00:01:58+08:00", "utc": "2018-01-04T16:01:58Z", "ms": 1515081718261.4683 }, "end": { "local": "2018-01-05T21:30:17+08:00", "utc": "2018-01-05T13:30:17Z", "ms": 1515159016720.1775 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-01-04", "window": { "start": { "local": "2018-01-04T20:01:19+08:00", "utc": "2018-01-04T12:01:19Z", "ms": 1515067278510.5303 }, "end": { "local": "2018-01-04T20:01:19+08:00", "utc": "2018-01-04T12:01:19Z", "ms": 1515067278510.5303 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-01-05", "window": { "start": { "local": "2018-01-05T21:07:48+08:00", "utc": "2018-01-05T13:07:48Z", "ms": 1515157667890.7363 }, "end": { "local": "2018-01-05T21:07:48+08:00", "utc": "2018-01-05T13:07:48Z", "ms": 1515157667890.7363 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:02 on Fri 5 Jan to 21:30 on Fri 5 Jan.", "fact": "2018-01-04T16:01:58Z → 2018-01-05T13:30:17Z" }, { "step": "kaala", "text": "Moonrise is at 20:01 on the 4th and 21:08 on the 5th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 4th and is on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1349 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lu’an, 2018: Friday 5 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": "2018-01-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-05", "confidence": "determinate" } ], "quote": "In Lu’an, Saṅkaṣṭa Caturthī 2018 falls on Friday 5 January. Caturthī runs from 00:02 on Fri 5 Jan to 21:30 on Fri 5 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/sankashta-chaturthi?on=2018-01-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/ekadashi?on=2018-01-12", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26520, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-01-11T21:40:53+08:00", "utc": "2018-01-11T13:40:53Z", "ms": 1515678053014.1506 }, "end": { "local": "2018-01-12T23:52:49+08:00", "utc": "2018-01-12T15:52:49Z", "ms": 1515772369369.072 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-11T21:40:53+08:00", "utc": "2018-01-11T13:40:53Z", "ms": 1515678053014.1506 }, "end": { "local": "2018-01-12T23:52:49+08:00", "utc": "2018-01-12T15:52:49Z", "ms": 1515772369369.072 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-01-12", "window": { "start": { "local": "2018-01-12T07:14:55+08:00", "utc": "2018-01-11T23:14:55Z", "ms": 1515712494766.1733 }, "end": { "local": "2018-01-12T07:14:55+08:00", "utc": "2018-01-11T23:14:55Z", "ms": 1515712494766.1733 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-01-13", "window": { "start": { "local": "2018-01-13T07:14:49+08:00", "utc": "2018-01-12T23:14:49Z", "ms": 1515798889049.2244 }, "end": { "local": "2018-01-13T07:14:49+08:00", "utc": "2018-01-12T23:14:49Z", "ms": 1515798889049.2244 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:41 on Thu 11 Jan to 23:53 on Fri 12 Jan.", "fact": "2018-01-11T13:40:53Z → 2018-01-12T15:52:49Z" }, { "step": "kaala", "text": "Sunrise is at 07:15 on the 12th and 07:15 on the 13th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 12th and is not on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26520 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Lu’an, 2018: Friday 12 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": "2018-01-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-12", "confidence": "determinate" } ], "quote": "In Lu’an, Ṣaṭtilā Ekādaśī 2018 falls on Friday 12 January. Ekādaśī runs from 21:41 on Thu 11 Jan to 23:53 on Fri 12 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-01-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4481, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2018-01-14T16:16:34+08:00", "utc": "2018-01-14T08:16:34Z", "ms": 1515917793571.2043 }, "end": { "local": "2018-02-13T05:18:13+08:00", "utc": "2018-02-12T21:18:13Z", "ms": 1518470293350.1775 } }, "span": { "of": "transit", "start": { "local": "2018-01-14T16:16:34+08:00", "utc": "2018-01-14T08:16:34Z", "ms": 1515917793571.2043 }, "end": { "local": "2018-01-14T16:16:34+08:00", "utc": "2018-01-14T08:16:34Z", "ms": 1515917793571.2043 } }, "kaala": "sunset-day", "days": [ { "local_date": "2018-01-14", "window": { "start": { "local": "2018-01-13T17:30:22+08:00", "utc": "2018-01-13T09:30:22Z", "ms": 1515835822143.6138 }, "end": { "local": "2018-01-14T17:31:15+08:00", "utc": "2018-01-14T09:31:15Z", "ms": 1515922274703.465 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2018-01-15", "window": { "start": { "local": "2018-01-14T17:31:15+08:00", "utc": "2018-01-14T09:31:15Z", "ms": 1515922274703.465 }, "end": { "local": "2018-01-15T17:32:08+08:00", "utc": "2018-01-15T09:32:08Z", "ms": 1516008727716.0947 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2018-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 16:17 on Sun 14 Jan.", "fact": "2018-01-14T08:16:34Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 17:31, and the day of the 15th ends at 17:32.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 13th and the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 4481 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Sunday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Lu’an, 2018: Saturday 13 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "bhogi", "follows": { "festival": "pongal", "days": -1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2018-01-13", "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": "2018-01-13", "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 Lu’an, Bhogi 2018 falls on Saturday 13 January. It is kept the day before Pongal, which falls on Sunday 14 January. The Sun enters Makara at 16:17 on Sun 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4481, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2018-01-14T16:16:34+08:00", "utc": "2018-01-14T08:16:34Z", "ms": 1515917793571.2043 }, "end": { "local": "2018-02-13T05:18:13+08:00", "utc": "2018-02-12T21:18:13Z", "ms": 1518470293350.1775 } }, "span": { "of": "transit", "start": { "local": "2018-01-14T16:16:34+08:00", "utc": "2018-01-14T08:16:34Z", "ms": 1515917793571.2043 }, "end": { "local": "2018-01-14T16:16:34+08:00", "utc": "2018-01-14T08:16:34Z", "ms": 1515917793571.2043 } }, "kaala": "sunset-day", "days": [ { "local_date": "2018-01-14", "window": { "start": { "local": "2018-01-13T17:30:22+08:00", "utc": "2018-01-13T09:30:22Z", "ms": 1515835822143.6138 }, "end": { "local": "2018-01-14T17:31:15+08:00", "utc": "2018-01-14T09:31:15Z", "ms": 1515922274703.465 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2018-01-15", "window": { "start": { "local": "2018-01-14T17:31:15+08:00", "utc": "2018-01-14T09:31:15Z", "ms": 1515922274703.465 }, "end": { "local": "2018-01-15T17:32:08+08:00", "utc": "2018-01-15T09:32:08Z", "ms": 1516008727716.0947 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 16:17 on Sun 14 Jan.", "fact": "2018-01-14T08:16:34Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 17:31, and the day of the 15th ends at 17:32.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 13th and the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 4481 s" }, { "step": "ruling", "text": "Pongal, Lu’an, 2018: Sunday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "pongal", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "not_evaluated": "The rule that heads the solar festivals, the day \"taken to begin from midnight\" (p. 106), is not applied to Pongal. It is kept on the first day of the month of Makara as the Tamil districts count it, a transit after sunset going to the next day (p. 244); the Rashtriya Panchang prints Pongal so.", "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2018-01-14", "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": "2018-01-14", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Lu’an, Pongal 2018 falls on Sunday 14 January. The Sun enters Makara at 16:17 on Sun 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27806, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2018-01-14T16:16:34+08:00", "utc": "2018-01-14T08:16:34Z", "ms": 1515917793571.2043 }, "end": { "local": "2018-02-13T05:18:13+08:00", "utc": "2018-02-12T21:18:13Z", "ms": 1518470293350.1775 } }, "span": { "of": "transit", "start": { "local": "2018-01-14T16:16:34+08:00", "utc": "2018-01-14T08:16:34Z", "ms": 1515917793571.2043 }, "end": { "local": "2018-01-14T16:16:34+08:00", "utc": "2018-01-14T08:16:34Z", "ms": 1515917793571.2043 } }, "kaala": "civil-day", "days": [ { "local_date": "2018-01-14", "window": { "start": { "local": "2018-01-14T00:00:00+08:00", "utc": "2018-01-13T16:00:00Z", "ms": 1515859200000 }, "end": { "local": "2018-01-15T00:00:00+08:00", "utc": "2018-01-14T16:00:00Z", "ms": 1515945600000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true }, { "local_date": "2018-01-15", "window": { "start": { "local": "2018-01-15T00:00:00+08:00", "utc": "2018-01-14T16:00:00Z", "ms": 1515945600000 }, "end": { "local": "2018-01-16T00:00:00+08:00", "utc": "2018-01-15T16:00:00Z", "ms": 1516032000000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 16:17 on Sun 14 Jan.", "fact": "2018-01-14T08:16:34Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Lu’an.", "fact": "civil-day: midnight-to-midnight · Asia/Shanghai" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from midnight. The transit falls on the 14th, not the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from midnight → only-day · margin 27806 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Lu’an, 2018: Sunday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "makara-sankranti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "rashi": "Makara", "day_from": "midnight" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2018-01-14", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "2018-01-14", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Lu’an, Makara Saṅkrānti 2018 falls on Sunday 14 January. The Sun enters Makara at 16:17 on Sun 14 Jan, and the rule counts the day from midnight.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/pradosha-vrata?on=2018-01-14", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25326, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-01-14T02:22:23+08:00", "utc": "2018-01-13T18:22:23Z", "ms": 1515867742723.9802 }, "end": { "local": "2018-01-15T05:01:06+08:00", "utc": "2018-01-14T21:01:06Z", "ms": 1515963665865.0425 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-14T02:22:23+08:00", "utc": "2018-01-13T18:22:23Z", "ms": 1515867742723.9802 }, "end": { "local": "2018-01-15T05:01:06+08:00", "utc": "2018-01-14T21:01:06Z", "ms": 1515963665865.0425 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-01-13", "window": { "start": { "local": "2018-01-13T17:30:22+08:00", "utc": "2018-01-13T09:30:22Z", "ms": 1515835822143.6138 }, "end": { "local": "2018-01-13T19:20:17+08:00", "utc": "2018-01-13T11:20:17Z", "ms": 1515842416736.6646 } }, "covered_min": 0, "window_min": 110, "qualifies": false }, { "local_date": "2018-01-14", "window": { "start": { "local": "2018-01-14T17:31:15+08:00", "utc": "2018-01-14T09:31:15Z", "ms": 1515922274703.465 }, "end": { "local": "2018-01-14T19:21:01+08:00", "utc": "2018-01-14T11:21:01Z", "ms": 1515928861062.1335 } }, "covered_min": 110, "window_min": 110, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:22 on Sun 14 Jan to 05:01 on Mon 15 Jan.", "fact": "2018-01-13T18:22:23Z → 2018-01-14T21:01:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:30–19:20 on the 13th, 17:31–19:21 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 110 minutes on the 13th and 110 of 110 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25326 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lu’an, 2018: Sunday 14 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": "2018-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-14", "confidence": "determinate" } ], "quote": "In Lu’an, Kṛṣṇa Pradoṣa Vrata 2018 falls on Sunday 14 January. Trayodaśī runs from 02:22 on Sun 14 Jan to 05:01 on Mon 15 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-01-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4481, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "2018-01-14T16:16:34+08:00", "utc": "2018-01-14T08:16:34Z", "ms": 1515917793571.2043 }, "end": { "local": "2018-02-13T05:18:13+08:00", "utc": "2018-02-12T21:18:13Z", "ms": 1518470293350.1775 } }, "span": { "of": "transit", "start": { "local": "2018-01-14T16:16:34+08:00", "utc": "2018-01-14T08:16:34Z", "ms": 1515917793571.2043 }, "end": { "local": "2018-01-14T16:16:34+08:00", "utc": "2018-01-14T08:16:34Z", "ms": 1515917793571.2043 } }, "kaala": "sunset-day", "days": [ { "local_date": "2018-01-14", "window": { "start": { "local": "2018-01-13T17:30:22+08:00", "utc": "2018-01-13T09:30:22Z", "ms": 1515835822143.6138 }, "end": { "local": "2018-01-14T17:31:15+08:00", "utc": "2018-01-14T09:31:15Z", "ms": 1515922274703.465 } }, "covered_min": 1, "window_min": 1441, "qualifies": true }, { "local_date": "2018-01-15", "window": { "start": { "local": "2018-01-14T17:31:15+08:00", "utc": "2018-01-14T09:31:15Z", "ms": 1515922274703.465 }, "end": { "local": "2018-01-15T17:32:08+08:00", "utc": "2018-01-15T09:32:08Z", "ms": 1516008727716.0947 } }, "covered_min": 0, "window_min": 1441, "qualifies": false } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "2018-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 16:17 on Sun 14 Jan.", "fact": "2018-01-14T08:16:34Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 14th ends at 17:31, and the day of the 15th ends at 17:32.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 13th and the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 4481 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Sunday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Lu’an, 2018: Monday 15 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "mattu-pongal", "follows": { "festival": "pongal", "days": 1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2018-01-15", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "2018-01-15", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Lu’an, Mattu Pongal 2018 falls on Monday 15 January. It is kept the day after Pongal, which falls on Sunday 14 January. The Sun enters Makara at 16:17 on Sun 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-15", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1420, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-01-15T05:01:06+08:00", "utc": "2018-01-14T21:01:06Z", "ms": 1515963665865.0425 }, "end": { "local": "2018-01-16T07:41:31+08:00", "utc": "2018-01-15T23:41:31Z", "ms": 1516059691175.3782 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-15T05:01:06+08:00", "utc": "2018-01-14T21:01:06Z", "ms": 1515963665865.0425 }, "end": { "local": "2018-01-16T07:41:31+08:00", "utc": "2018-01-15T23:41:31Z", "ms": 1516059691175.3782 } }, "kaala": "arunodaya", "days": [ { "local_date": "2018-01-15", "window": { "start": { "local": "2018-01-15T05:24:46+08:00", "utc": "2018-01-14T21:24:46Z", "ms": 1515965086034.8105 }, "end": { "local": "2018-01-15T07:14:32+08:00", "utc": "2018-01-14T23:14:32Z", "ms": 1515971672393.479 } }, "covered_min": 110, "window_min": 110, "qualifies": true }, { "local_date": "2018-01-16", "window": { "start": { "local": "2018-01-16T05:24:44+08:00", "utc": "2018-01-15T21:24:44Z", "ms": 1516051483624.2053 }, "end": { "local": "2018-01-16T07:14:21+08:00", "utc": "2018-01-15T23:14:21Z", "ms": 1516058061456.2224 } }, "covered_min": 110, "window_min": 110, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:01 on Mon 15 Jan to 07:42 on Tue 16 Jan.", "fact": "2018-01-14T21:01:06Z → 2018-01-15T23:41:31Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:25–07:15 on the 15th, 05:25–07:14 on the 16th.", "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 110 of 110 minutes on the 15th and 110 of 110 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both dawns qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1420 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Lu’an, 2018: Monday 15 January.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "2018-01-15", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-15", "confidence": "boundary" } ], "quote": "In Lu’an, Yama Tarpaṇa 2018 falls on Monday 15 January. Caturdaśī runs from 05:01 on Mon 15 Jan to 07:42 on Tue 16 Jan and covers all of aruṇodaya that dawn. It also reaches the next dawn for 110 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/lu-an/festivals/2018/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": "/lu-an/festivals/2018/shivaratri?on=2018-01-15", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15252, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-01-15T05:01:06+08:00", "utc": "2018-01-14T21:01:06Z", "ms": 1515963665865.0425 }, "end": { "local": "2018-01-16T07:41:31+08:00", "utc": "2018-01-15T23:41:31Z", "ms": 1516059691175.3782 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-15T05:01:06+08:00", "utc": "2018-01-14T21:01:06Z", "ms": 1515963665865.0425 }, "end": { "local": "2018-01-16T07:41:31+08:00", "utc": "2018-01-15T23:41:31Z", "ms": 1516059691175.3782 } }, "kaala": "nishita", "days": [ { "local_date": "2018-01-14", "window": { "start": { "local": "2018-01-14T23:58:54+08:00", "utc": "2018-01-14T15:58:54Z", "ms": 1515945533548.4722 }, "end": { "local": "2018-01-15T00:46:54+08:00", "utc": "2018-01-14T16:46:54Z", "ms": 1515948413548.4722 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-01-15", "window": { "start": { "local": "2018-01-15T23:59:15+08:00", "utc": "2018-01-15T15:59:15Z", "ms": 1516031954586.1587 }, "end": { "local": "2018-01-16T00:47:15+08:00", "utc": "2018-01-15T16:47:15Z", "ms": 1516034834586.1587 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:01 on Mon 15 Jan to 07:42 on Tue 16 Jan.", "fact": "2018-01-14T21:01:06Z → 2018-01-15T23:41:31Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:59–00:47 on the 14th, 23:59–00:47 on the 15th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15252 s" }, { "step": "ruling", "text": "Śivarātri, Lu’an, 2018: Monday 15 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": "2018-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-15", "confidence": "determinate" } ], "quote": "In Lu’an, Śivarātri 2018 falls on Monday 15 January. Caturdaśī runs from 05:01 on Mon 15 Jan to 07:42 on Tue 16 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/shivaratri?on=2018-01-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-20", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1568, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-01-20T16:41:08+08:00", "utc": "2018-01-20T08:41:08Z", "ms": 1516437667623.3171 }, "end": { "local": "2018-01-21T18:03:40+08:00", "utc": "2018-01-21T10:03:40Z", "ms": 1516529020280.0808 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-20T16:41:08+08:00", "utc": "2018-01-20T08:41:08Z", "ms": 1516437667623.3171 }, "end": { "local": "2018-01-21T18:03:40+08:00", "utc": "2018-01-21T10:03:40Z", "ms": 1516529020280.0808 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-01-20", "window": { "start": { "local": "2018-01-20T17:36:38+08:00", "utc": "2018-01-20T09:36:38Z", "ms": 1516440997984.8247 }, "end": { "local": "2018-01-20T19:25:29+08:00", "utc": "2018-01-20T11:25:29Z", "ms": 1516447529030.4941 } }, "covered_min": 109, "window_min": 109, "qualifies": true }, { "local_date": "2018-01-21", "window": { "start": { "local": "2018-01-21T17:37:33+08:00", "utc": "2018-01-21T09:37:33Z", "ms": 1516527452774.1248 }, "end": { "local": "2018-01-21T19:26:14+08:00", "utc": "2018-01-21T11:26:14Z", "ms": 1516533973678.9934 } }, "covered_min": 26, "window_min": 109, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:41 on Sat 20 Jan to 18:04 on Sun 21 Jan.", "fact": "2018-01-20T08:41:08Z → 2018-01-21T10:03:40Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:37–19:25 on the 20th, 17:38–19:26 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 109 of 109 minutes on the 20th and 26 of 109 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "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 1568 s" }, { "step": "ruling", "text": "Tila Caturthī, Lu’an, 2018: Saturday 20 January.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "2018-01-20", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-20", "confidence": "boundary" } ], "quote": "In Lu’an, Tila Caturthī 2018 falls on Saturday 20 January. Caturthī runs from 16:41 on Sat 20 Jan to 18:04 on Sun 21 Jan and covers all of pradoṣa that evening. It also reaches the next evening for 26 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/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13928, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-01-20T16:41:08+08:00", "utc": "2018-01-20T08:41:08Z", "ms": 1516437667623.3171 }, "end": { "local": "2018-01-21T18:03:40+08:00", "utc": "2018-01-21T10:03:40Z", "ms": 1516529020280.0808 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-20T16:41:08+08:00", "utc": "2018-01-20T08:41:08Z", "ms": 1516437667623.3171 }, "end": { "local": "2018-01-21T18:03:40+08:00", "utc": "2018-01-21T10:03:40Z", "ms": 1516529020280.0808 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-01-20", "window": { "start": { "local": "2018-01-20T12:00:59+08:00", "utc": "2018-01-20T04:00:59Z", "ms": 1516420859188.3477 }, "end": { "local": "2018-01-20T12:48:59+08:00", "utc": "2018-01-20T04:48:59Z", "ms": 1516423739188.3477 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-01-21", "window": { "start": { "local": "2018-01-21T12:01:17+08:00", "utc": "2018-01-21T04:01:17Z", "ms": 1516507276800.735 }, "end": { "local": "2018-01-21T12:49:17+08:00", "utc": "2018-01-21T04:49:17Z", "ms": 1516510156800.735 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:41 on Sat 20 Jan to 18:04 on Sun 21 Jan.", "fact": "2018-01-20T08:41:08Z → 2018-01-21T10:03:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:01–12:49 on the 20th, 12:01–12:49 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 13928 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Lu’an, 2018: Sunday 21 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-01-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-21", "confidence": "determinate" } ], "quote": "In Lu’an, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 2018 falls on Sunday 21 January. Caturthī runs from 16:41 on Sat 20 Jan to 18:04 on Sun 21 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18863, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2018-01-21T18:03:40+08:00", "utc": "2018-01-21T10:03:40Z", "ms": 1516529020280.0808 }, "end": { "local": "2018-01-22T18:54:51+08:00", "utc": "2018-01-22T10:54:51Z", "ms": 1516618490802.974 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-21T18:03:40+08:00", "utc": "2018-01-21T10:03:40Z", "ms": 1516529020280.0808 }, "end": { "local": "2018-01-22T18:54:51+08:00", "utc": "2018-01-22T10:54:51Z", "ms": 1516618490802.974 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-01-21", "window": { "start": { "local": "2018-01-21T12:01:17+08:00", "utc": "2018-01-21T04:01:17Z", "ms": 1516507276800.735 }, "end": { "local": "2018-01-21T12:49:17+08:00", "utc": "2018-01-21T04:49:17Z", "ms": 1516510156800.735 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-01-22", "window": { "start": { "local": "2018-01-22T12:01:34+08:00", "utc": "2018-01-22T04:01:34Z", "ms": 1516593693636.33 }, "end": { "local": "2018-01-22T12:49:34+08:00", "utc": "2018-01-22T04:49:34Z", "ms": 1516596573636.33 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 18:04 on Sun 21 Jan to 18:55 on Mon 22 Jan.", "fact": "2018-01-21T10:03:40Z → 2018-01-22T10:54:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:01–12:49 on the 21st, 12:02–12:50 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18863 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Lu’an, 2018: Monday 22 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-01-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-22", "confidence": "determinate" } ], "quote": "In Lu’an, Śrī Pañcamī 2018 falls on Monday 22 January. Pañcamī runs from 18:04 on Sun 21 Jan to 18:55 on Mon 22 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18863, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2018-01-21T18:03:40+08:00", "utc": "2018-01-21T10:03:40Z", "ms": 1516529020280.0808 }, "end": { "local": "2018-01-22T18:54:51+08:00", "utc": "2018-01-22T10:54:51Z", "ms": 1516618490802.974 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-21T18:03:40+08:00", "utc": "2018-01-21T10:03:40Z", "ms": 1516529020280.0808 }, "end": { "local": "2018-01-22T18:54:51+08:00", "utc": "2018-01-22T10:54:51Z", "ms": 1516618490802.974 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-01-21", "window": { "start": { "local": "2018-01-21T12:01:17+08:00", "utc": "2018-01-21T04:01:17Z", "ms": 1516507276800.735 }, "end": { "local": "2018-01-21T12:49:17+08:00", "utc": "2018-01-21T04:49:17Z", "ms": 1516510156800.735 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-01-22", "window": { "start": { "local": "2018-01-22T12:01:34+08:00", "utc": "2018-01-22T04:01:34Z", "ms": 1516593693636.33 }, "end": { "local": "2018-01-22T12:49:34+08:00", "utc": "2018-01-22T04:49:34Z", "ms": 1516596573636.33 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 18:04 on Sun 21 Jan to 18:55 on Mon 22 Jan.", "fact": "2018-01-21T10:03:40Z → 2018-01-22T10:54:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:01–12:49 on the 21st, 12:02–12:50 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18863 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Lu’an, 2018: Monday 22 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasanta-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-01-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-22", "confidence": "determinate" } ], "quote": "In Lu’an, Vasanta Pañcamī 2018 falls on Monday 22 January. Pañcamī runs from 18:04 on Sun 21 Jan to 18:55 on Mon 22 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36795, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2018-01-23T19:10:17+08:00", "utc": "2018-01-23T11:10:17Z", "ms": 1516705816734.995 }, "end": { "local": "2018-01-24T18:46:58+08:00", "utc": "2018-01-24T10:46:58Z", "ms": 1516790818221.2603 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-23T19:10:17+08:00", "utc": "2018-01-23T11:10:17Z", "ms": 1516705816734.995 }, "end": { "local": "2018-01-24T18:46:58+08:00", "utc": "2018-01-24T10:46:58Z", "ms": 1516790818221.2603 } }, "kaala": "arunodaya", "days": [ { "local_date": "2018-01-24", "window": { "start": { "local": "2018-01-24T05:23:32+08:00", "utc": "2018-01-23T21:23:32Z", "ms": 1516742612073.4258 }, "end": { "local": "2018-01-24T07:11:52+08:00", "utc": "2018-01-23T23:11:52Z", "ms": 1516749111967.81 } }, "covered_min": 108, "window_min": 108, "qualifies": true }, { "local_date": "2018-01-25", "window": { "start": { "local": "2018-01-25T05:23:17+08:00", "utc": "2018-01-24T21:23:17Z", "ms": 1516828996631.1697 }, "end": { "local": "2018-01-25T07:11:26+08:00", "utc": "2018-01-24T23:11:26Z", "ms": 1516835485669.6675 } }, "covered_min": 0, "window_min": 108, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 19:10 on Tue 23 Jan to 18:47 on Wed 24 Jan.", "fact": "2018-01-23T11:10:17Z → 2018-01-24T10:46:58Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:24–07:12 on the 24th, 05:23–07:11 on the 25th.", "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 108 of 108 minutes on the 24th and 0 of 108 on the 25th.", "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 36795 s" }, { "step": "ruling", "text": "Ratha Saptamī, Lu’an, 2018: Wednesday 24 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-01-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-24", "confidence": "determinate" } ], "quote": "In Lu’an, Ratha Saptamī 2018 falls on Wednesday 24 January. Saptamī runs from 19:10 on Tue 23 Jan to 18:47 on Wed 24 Jan and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-01-28", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13680, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-01-27T13:44:57+08:00", "utc": "2018-01-27T05:44:57Z", "ms": 1517031897353.4683 }, "end": { "local": "2018-01-28T10:57:57+08:00", "utc": "2018-01-28T02:57:57Z", "ms": 1517108276852.1748 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-27T13:44:57+08:00", "utc": "2018-01-27T05:44:57Z", "ms": 1517031897353.4683 }, "end": { "local": "2018-01-28T10:57:57+08:00", "utc": "2018-01-28T02:57:57Z", "ms": 1517108276852.1748 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-01-27", "window": { "start": { "local": "2018-01-27T07:10:28+08:00", "utc": "2018-01-26T23:10:28Z", "ms": 1517008228154.4229 }, "end": { "local": "2018-01-27T07:10:28+08:00", "utc": "2018-01-26T23:10:28Z", "ms": 1517008228154.4229 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-01-28", "window": { "start": { "local": "2018-01-28T07:09:57+08:00", "utc": "2018-01-27T23:09:57Z", "ms": 1517094596977.4514 }, "end": { "local": "2018-01-28T07:09:57+08:00", "utc": "2018-01-27T23:09:57Z", "ms": 1517094596977.4514 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 13:45 on Sat 27 Jan to 10:58 on Sun 28 Jan.", "fact": "2018-01-27T05:44:57Z → 2018-01-28T02:57:57Z" }, { "step": "kaala", "text": "Sunrise is at 07:10 on the 27th and 07:10 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 27th and is on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 13680 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Lu’an, 2018: Sunday 28 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": "2018-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-28", "confidence": "determinate" } ], "quote": "In Lu’an, Jayā Ekādaśī 2018 falls on Sunday 28 January. Ekādaśī runs from 13:45 on Sat 27 Jan to 10:58 on Sun 28 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-01-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3901, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2018-01-28T10:57:57+08:00", "utc": "2018-01-28T02:57:57Z", "ms": 1517108276852.1748 }, "end": { "local": "2018-01-29T07:48:01+08:00", "utc": "2018-01-28T23:48:01Z", "ms": 1517183281485.9104 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-28T10:57:57+08:00", "utc": "2018-01-28T02:57:57Z", "ms": 1517108276852.1748 }, "end": { "local": "2018-01-29T07:48:01+08:00", "utc": "2018-01-28T23:48:01Z", "ms": 1517183281485.9104 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-01-28", "window": { "start": { "local": "2018-01-28T12:02:58+08:00", "utc": "2018-01-28T04:02:58Z", "ms": 1517112177701.9783 }, "end": { "local": "2018-01-28T12:50:58+08:00", "utc": "2018-01-28T04:50:58Z", "ms": 1517115057701.9783 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-01-29", "window": { "start": { "local": "2018-01-29T12:03:09+08:00", "utc": "2018-01-29T04:03:09Z", "ms": 1517198588824.295 }, "end": { "local": "2018-01-29T12:51:09+08:00", "utc": "2018-01-29T04:51:09Z", "ms": 1517201468824.295 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 10:58 on Sun 28 Jan to 07:48 on Mon 29 Jan.", "fact": "2018-01-28T02:57:57Z → 2018-01-28T23:48:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 28th, 12:03–12:51 on the 29th.", "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 28th and 0 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 3901 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Lu’an, 2018: Sunday 28 January.", "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": "2018-01-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-28", "confidence": "determinate" } ], "quote": "In Lu’an, Bhīṣma Dvādaśī 2018 falls on Sunday 28 January. Dvādaśī runs from 10:58 on Sun 28 Jan to 07:48 on Mon 29 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/pradosha-vrata?on=2018-01-29", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31879, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-01-29T07:48:01+08:00", "utc": "2018-01-28T23:48:01Z", "ms": 1517183281485.9104 }, "end": { "local": "2018-01-30T04:23:24+08:00", "utc": "2018-01-29T20:23:24Z", "ms": 1517257404271.044 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-29T07:48:01+08:00", "utc": "2018-01-28T23:48:01Z", "ms": 1517183281485.9104 }, "end": { "local": "2018-01-30T04:23:24+08:00", "utc": "2018-01-29T20:23:24Z", "ms": 1517257404271.044 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-01-28", "window": { "start": { "local": "2018-01-28T17:43:58+08:00", "utc": "2018-01-28T09:43:58Z", "ms": 1517132638426.5051 }, "end": { "local": "2018-01-28T19:31:22+08:00", "utc": "2018-01-28T11:31:22Z", "ms": 1517139081865.358 } }, "covered_min": 0, "window_min": 107, "qualifies": false }, { "local_date": "2018-01-29", "window": { "start": { "local": "2018-01-29T17:44:53+08:00", "utc": "2018-01-29T09:44:53Z", "ms": 1517219093430.6895 }, "end": { "local": "2018-01-29T19:32:05+08:00", "utc": "2018-01-29T11:32:05Z", "ms": 1517225524960.0513 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:48 on Mon 29 Jan to 04:23 on Tue 30 Jan.", "fact": "2018-01-28T23:48:01Z → 2018-01-29T20:23:24Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:44–19:31 on the 28th, 17:45–19:32 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 107 minutes on the 28th and 107 of 107 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 31879 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lu’an, 2018: Monday 29 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": "2018-01-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-29", "confidence": "determinate" } ], "quote": "In Lu’an, Śukla Pradoṣa Vrata 2018 falls on Monday 29 January. Trayodaśī runs from 07:48 on Mon 29 Jan to 04:23 on Tue 30 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-01-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-01-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30915, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-01-31T00:53:08+08:00", "utc": "2018-01-30T16:53:08Z", "ms": 1517331187830.8684 }, "end": { "local": "2018-01-31T21:26:44+08:00", "utc": "2018-01-31T13:26:44Z", "ms": 1517405203735.9001 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "2018-01-31T00:53:08+08:00", "utc": "2018-01-30T16:53:08Z", "ms": 1517331187830.8684 }, "end": { "local": "2018-01-31T21:26:44+08:00", "utc": "2018-01-31T13:26:44Z", "ms": 1517405203735.9001 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-01-30", "window": { "start": { "local": "2018-01-30T12:03:19+08:00", "utc": "2018-01-30T04:03:19Z", "ms": 1517284999116.3645 }, "end": { "local": "2018-01-30T12:51:19+08:00", "utc": "2018-01-30T04:51:19Z", "ms": 1517287879116.3645 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-01-31", "window": { "start": { "local": "2018-01-31T12:03:29+08:00", "utc": "2018-01-31T04:03:29Z", "ms": 1517371408581.2236 }, "end": { "local": "2018-01-31T12:51:29+08:00", "utc": "2018-01-31T04:51:29Z", "ms": 1517374288581.2236 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:53 on Wed 31 Jan to 21:27 on Wed 31 Jan.", "fact": "2018-01-30T16:53:08Z → 2018-01-31T13:26:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 30th, 12:03–12:51 on the 31st.", "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 30th and 48 of 48 on the 31st.", "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 30915 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Lu’an, 2018: Wednesday 31 January.", "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": "2018-01-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-01-31", "confidence": "determinate" } ], "quote": "In Lu’an, Māghī Pūrṇimā 2018 falls on Wednesday 31 January. Pūrṇimā runs from 00:53 on Wed 31 Jan to 21:27 on Wed 31 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/sankashta-chaturthi?on=2018-02-03", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-02-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28142, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-02-03T13:06:16+08:00", "utc": "2018-02-03T05:06:16Z", "ms": 1517634376094.376 }, "end": { "local": "2018-02-04T11:28:05+08:00", "utc": "2018-02-04T03:28:05Z", "ms": 1517714884979.523 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2018-02-03T13:06:16+08:00", "utc": "2018-02-03T05:06:16Z", "ms": 1517634376094.376 }, "end": { "local": "2018-02-04T11:28:05+08:00", "utc": "2018-02-04T03:28:05Z", "ms": 1517714884979.523 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-02-03", "window": { "start": { "local": "2018-02-03T20:55:18+08:00", "utc": "2018-02-03T12:55:18Z", "ms": 1517662517932.7146 }, "end": { "local": "2018-02-03T20:55:18+08:00", "utc": "2018-02-03T12:55:18Z", "ms": 1517662517932.7146 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-02-04", "window": { "start": { "local": "2018-02-04T21:57:03+08:00", "utc": "2018-02-04T13:57:03Z", "ms": 1517752622797.6204 }, "end": { "local": "2018-02-04T21:57:03+08:00", "utc": "2018-02-04T13:57:03Z", "ms": 1517752622797.6204 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:06 on Sat 3 Feb to 11:28 on Sun 4 Feb.", "fact": "2018-02-03T05:06:16Z → 2018-02-04T03:28:05Z" }, { "step": "kaala", "text": "Moonrise is at 20:55 on the 3rd and 21:57 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 3rd and is not on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28142 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lu’an, 2018: Saturday 3 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": "2018-02-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-02-03", "confidence": "determinate" } ], "quote": "In Lu’an, Saṅkaṣṭa Caturthī 2018 falls on Saturday 3 February. Caturthī runs from 13:06 on Sat 3 Feb to 11:28 on Sun 4 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/sankashta-chaturthi?on=2018-02-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/ekadashi?on=2018-02-11", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-02-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36799, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-02-10T17:14:17+08:00", "utc": "2018-02-10T09:14:17Z", "ms": 1518254056706.8145 }, "end": { "local": "2018-02-11T19:54:32+08:00", "utc": "2018-02-11T11:54:32Z", "ms": 1518350072012.6855 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2018-02-10T17:14:17+08:00", "utc": "2018-02-10T09:14:17Z", "ms": 1518254056706.8145 }, "end": { "local": "2018-02-11T19:54:32+08:00", "utc": "2018-02-11T11:54:32Z", "ms": 1518350072012.6855 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-02-10", "window": { "start": { "local": "2018-02-10T07:00:57+08:00", "utc": "2018-02-09T23:00:57Z", "ms": 1518217257488.9707 }, "end": { "local": "2018-02-10T07:00:57+08:00", "utc": "2018-02-09T23:00:57Z", "ms": 1518217257488.9707 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-02-11", "window": { "start": { "local": "2018-02-11T07:00:07+08:00", "utc": "2018-02-10T23:00:07Z", "ms": 1518303606625.728 }, "end": { "local": "2018-02-11T07:00:07+08:00", "utc": "2018-02-10T23:00:07Z", "ms": 1518303606625.728 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:14 on Sat 10 Feb to 19:55 on Sun 11 Feb.", "fact": "2018-02-10T09:14:17Z → 2018-02-11T11:54:32Z" }, { "step": "kaala", "text": "Sunrise is at 07:01 on the 10th and 07:00 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 36799 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Lu’an, 2018: Sunday 11 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": "2018-02-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-02-11", "confidence": "determinate" } ], "quote": "In Lu’an, Vijayā Ekādaśī 2018 falls on Sunday 11 February. Ekādaśī runs from 17:14 on Sat 10 Feb to 19:55 on Sun 11 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-02-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-02-13", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-02-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10401, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-02-12T22:34:53+08:00", "utc": "2018-02-12T14:34:53Z", "ms": 1518446093438.286 }, "end": { "local": "2018-02-14T01:04:57+08:00", "utc": "2018-02-13T17:04:57Z", "ms": 1518541496880.9626 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2018-02-12T22:34:53+08:00", "utc": "2018-02-12T14:34:53Z", "ms": 1518446093438.286 }, "end": { "local": "2018-02-14T01:04:57+08:00", "utc": "2018-02-13T17:04:57Z", "ms": 1518541496880.9626 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-02-12", "window": { "start": { "local": "2018-02-12T17:57:25+08:00", "utc": "2018-02-12T09:57:25Z", "ms": 1518429444820.7468 }, "end": { "local": "2018-02-12T19:41:32+08:00", "utc": "2018-02-12T11:41:32Z", "ms": 1518435692353.4783 } }, "covered_min": 0, "window_min": 104, "qualifies": false }, { "local_date": "2018-02-13", "window": { "start": { "local": "2018-02-13T17:58:17+08:00", "utc": "2018-02-13T09:58:17Z", "ms": 1518515896536.105 }, "end": { "local": "2018-02-13T19:42:10+08:00", "utc": "2018-02-13T11:42:10Z", "ms": 1518522129921.0015 } }, "covered_min": 104, "window_min": 104, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:35 on Mon 12 Feb to 01:05 on Wed 14 Feb.", "fact": "2018-02-12T14:34:53Z → 2018-02-13T17:04:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:57–19:42 on the 12th, 17:58–19:42 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 104 minutes on the 12th and 104 of 104 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 10401 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lu’an, 2018: Tuesday 13 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": "2018-02-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-02-13", "confidence": "determinate" } ], "quote": "In Lu’an, Kṛṣṇa Pradoṣa Vrata 2018 falls on Tuesday 13 February. Trayodaśī runs from 22:35 on Mon 12 Feb to 01:05 on Wed 14 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-02-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-02-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 785, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-02-14T01:04:57+08:00", "utc": "2018-02-13T17:04:57Z", "ms": 1518541496880.9626 }, "end": { "local": "2018-02-15T03:16:48+08:00", "utc": "2018-02-14T19:16:48Z", "ms": 1518635808473.8533 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2018-02-14T01:04:57+08:00", "utc": "2018-02-13T17:04:57Z", "ms": 1518541496880.9626 }, "end": { "local": "2018-02-15T03:16:48+08:00", "utc": "2018-02-14T19:16:48Z", "ms": 1518635808473.8533 } }, "kaala": "nishita", "days": [ { "local_date": "2018-02-13", "window": { "start": { "local": "2018-02-14T00:03:52+08:00", "utc": "2018-02-13T16:03:52Z", "ms": 1518537831729.4668 }, "end": { "local": "2018-02-14T00:51:52+08:00", "utc": "2018-02-13T16:51:52Z", "ms": 1518540711729.4668 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-02-14", "window": { "start": { "local": "2018-02-15T00:03:50+08:00", "utc": "2018-02-14T16:03:50Z", "ms": 1518624229661.9312 }, "end": { "local": "2018-02-15T00:51:50+08:00", "utc": "2018-02-14T16:51:50Z", "ms": 1518627109661.9312 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:05 on Wed 14 Feb to 03:17 on Thu 15 Feb.", "fact": "2018-02-13T17:04:57Z → 2018-02-14T19:16:48Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:04–00:52 on the 13th, 00:04–00:52 on the 14th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 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 night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 785 s" }, { "step": "ruling", "text": "Mahāśivarātri, Lu’an, 2018: Wednesday 14 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": "2018-02-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-02-14", "confidence": "determinate" } ], "quote": "In Lu’an, Mahāśivarātri 2018 falls on Wednesday 14 February. Caturdaśī runs from 01:05 on Wed 14 Feb to 03:17 on Thu 15 Feb and covers all of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-02-19", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-02-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15405, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-02-19T07:47:14+08:00", "utc": "2018-02-18T23:47:14Z", "ms": 1518997634456.6365 }, "end": { "local": "2018-02-20T07:45:23+08:00", "utc": "2018-02-19T23:45:23Z", "ms": 1519083923255.6016 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2018-02-19T07:47:14+08:00", "utc": "2018-02-18T23:47:14Z", "ms": 1518997634456.6365 }, "end": { "local": "2018-02-20T07:45:23+08:00", "utc": "2018-02-19T23:45:23Z", "ms": 1519083923255.6016 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-02-19", "window": { "start": { "local": "2018-02-19T12:03:59+08:00", "utc": "2018-02-19T04:03:59Z", "ms": 1519013039056.9653 }, "end": { "local": "2018-02-19T12:51:59+08:00", "utc": "2018-02-19T04:51:59Z", "ms": 1519015919056.9653 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-02-20", "window": { "start": { "local": "2018-02-20T12:03:53+08:00", "utc": "2018-02-20T04:03:53Z", "ms": 1519099433281.9097 }, "end": { "local": "2018-02-20T12:51:53+08:00", "utc": "2018-02-20T04:51:53Z", "ms": 1519102313281.9097 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:47 on Mon 19 Feb to 07:45 on Tue 20 Feb.", "fact": "2018-02-18T23:47:14Z → 2018-02-19T23:45:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 19th, 12:04–12:52 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15405 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lu’an, 2018: Monday 19 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-02-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-02-19", "confidence": "determinate" } ], "quote": "In Lu’an, Vināyaka Caturthī 2018 falls on Monday 19 February. Caturthī runs from 07:47 on Mon 19 Feb to 07:45 on Tue 20 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-02-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/ekadashi?on=2018-02-26", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-02-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29119, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-02-25T22:39:56+08:00", "utc": "2018-02-25T14:39:56Z", "ms": 1519569595588.5083 }, "end": { "local": "2018-02-26T19:59:13+08:00", "utc": "2018-02-26T11:59:13Z", "ms": 1519646352739.048 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2018-02-25T22:39:56+08:00", "utc": "2018-02-25T14:39:56Z", "ms": 1519569595588.5083 }, "end": { "local": "2018-02-26T19:59:13+08:00", "utc": "2018-02-26T11:59:13Z", "ms": 1519646352739.048 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-02-26", "window": { "start": { "local": "2018-02-26T06:45:14+08:00", "utc": "2018-02-25T22:45:14Z", "ms": 1519598714140.2568 }, "end": { "local": "2018-02-26T06:45:14+08:00", "utc": "2018-02-25T22:45:14Z", "ms": 1519598714140.2568 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-02-27", "window": { "start": { "local": "2018-02-27T06:44:07+08:00", "utc": "2018-02-26T22:44:07Z", "ms": 1519685047252.2676 }, "end": { "local": "2018-02-27T06:44:07+08:00", "utc": "2018-02-26T22:44:07Z", "ms": 1519685047252.2676 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:40 on Sun 25 Feb to 19:59 on Mon 26 Feb.", "fact": "2018-02-25T14:39:56Z → 2018-02-26T11:59:13Z" }, { "step": "kaala", "text": "Sunrise is at 06:45 on the 26th and 06:44 on the 27th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 26th and is not on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29119 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Lu’an, 2018: Monday 26 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": "2018-02-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-02-26", "confidence": "determinate" } ], "quote": "In Lu’an, Āmalakī Ekādaśī 2018 falls on Monday 26 February. Ekādaśī runs from 22:40 on Sun 25 Feb to 19:59 on Mon 26 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-02-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-02-27", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-02-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3628, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-02-27T17:09:14+08:00", "utc": "2018-02-27T09:09:14Z", "ms": 1519722554032.3486 }, "end": { "local": "2018-02-28T14:16:19+08:00", "utc": "2018-02-28T06:16:19Z", "ms": 1519798579179.2974 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2018-02-27T17:09:14+08:00", "utc": "2018-02-27T09:09:14Z", "ms": 1519722554032.3486 }, "end": { "local": "2018-02-28T14:16:19+08:00", "utc": "2018-02-28T06:16:19Z", "ms": 1519798579179.2974 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-02-27", "window": { "start": { "local": "2018-02-27T18:09:42+08:00", "utc": "2018-02-27T10:09:42Z", "ms": 1519726182197.456 }, "end": { "local": "2018-02-27T19:50:09+08:00", "utc": "2018-02-27T11:50:09Z", "ms": 1519732208519.391 } }, "covered_min": 100, "window_min": 100, "qualifies": true }, { "local_date": "2018-02-28", "window": { "start": { "local": "2018-02-28T18:10:28+08:00", "utc": "2018-02-28T10:10:28Z", "ms": 1519812628325.179 }, "end": { "local": "2018-02-28T19:50:39+08:00", "utc": "2018-02-28T11:50:39Z", "ms": 1519818639382.2117 } }, "covered_min": 0, "window_min": 100, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:09 on Tue 27 Feb to 14:16 on Wed 28 Feb.", "fact": "2018-02-27T09:09:14Z → 2018-02-28T06:16:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:10–19:50 on the 27th, 18:10–19:51 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 100 of 100 minutes on the 27th and 0 of 100 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 3628 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lu’an, 2018: 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": "2018-02-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-02-27", "confidence": "determinate" } ], "quote": "In Lu’an, Śukla Pradoṣa Vrata 2018 falls on Tuesday 27 February. Trayodaśī runs from 17:09 on Tue 27 Feb to 14:16 on Wed 28 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-02-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15939, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-03-01T11:27:42+08:00", "utc": "2018-03-01T03:27:42Z", "ms": 1519874862464.6624 }, "end": { "local": "2018-03-02T08:51:20+08:00", "utc": "2018-03-02T00:51:20Z", "ms": 1519951880069.761 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2018-03-01T11:27:42+08:00", "utc": "2018-03-01T03:27:42Z", "ms": 1519874862464.6624 }, "end": { "local": "2018-03-02T08:51:20+08:00", "utc": "2018-03-02T00:51:20Z", "ms": 1519951880069.761 } }, "kaala": "sayahna", "days": [ { "local_date": "2018-03-01", "window": { "start": { "local": "2018-03-01T15:53:22+08:00", "utc": "2018-03-01T07:53:22Z", "ms": 1519890801528.3381 }, "end": { "local": "2018-03-01T18:11:14+08:00", "utc": "2018-03-01T10:11:14Z", "ms": 1519899074097.1914 } }, "covered_min": 138, "window_min": 138, "qualifies": true }, { "local_date": "2018-03-02", "window": { "start": { "local": "2018-03-02T15:53:44+08:00", "utc": "2018-03-02T07:53:44Z", "ms": 1519977224062.359 }, "end": { "local": "2018-03-02T18:12:00+08:00", "utc": "2018-03-02T10:12:00Z", "ms": 1519985519525.7437 } }, "covered_min": 0, "window_min": 138, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:28 on Thu 1 Mar to 08:51 on Fri 2 Mar.", "fact": "2018-03-01T03:27:42Z → 2018-03-02T00:51:20Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:53–18:11 on the 1st, 15:54–18:12 on the 2nd.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 138 of 138 minutes on the 1st and 0 of 138 on the 2nd.", "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 15939 s" }, { "step": "ruling", "text": "Holikā Dahana, Lu’an, 2018: Thursday 1 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": "2018-03-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-01", "confidence": "determinate" } ], "quote": "In Lu’an, Holikā Dahana 2018 falls on Thursday 1 March. Pūrṇimā runs from 11:28 on Thu 1 Mar to 08:51 on Fri 2 Mar and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15939, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-03-01T11:27:42+08:00", "utc": "2018-03-01T03:27:42Z", "ms": 1519874862464.6624 }, "end": { "local": "2018-03-02T08:51:20+08:00", "utc": "2018-03-02T00:51:20Z", "ms": 1519951880069.761 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "2018-03-01T11:27:42+08:00", "utc": "2018-03-01T03:27:42Z", "ms": 1519874862464.6624 }, "end": { "local": "2018-03-02T08:51:20+08:00", "utc": "2018-03-02T00:51:20Z", "ms": 1519951880069.761 } }, "kaala": "sayahna", "days": [ { "local_date": "2018-03-01", "window": { "start": { "local": "2018-03-01T15:53:22+08:00", "utc": "2018-03-01T07:53:22Z", "ms": 1519890801528.3381 }, "end": { "local": "2018-03-01T18:11:14+08:00", "utc": "2018-03-01T10:11:14Z", "ms": 1519899074097.1914 } }, "covered_min": 138, "window_min": 138, "qualifies": true }, { "local_date": "2018-03-02", "window": { "start": { "local": "2018-03-02T15:53:44+08:00", "utc": "2018-03-02T07:53:44Z", "ms": 1519977224062.359 }, "end": { "local": "2018-03-02T18:12:00+08:00", "utc": "2018-03-02T10:12:00Z", "ms": 1519985519525.7437 } }, "covered_min": 0, "window_min": 138, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "2018-03-01", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:28 on Thu 1 Mar to 08:51 on Fri 2 Mar.", "fact": "2018-03-01T03:27:42Z → 2018-03-02T00:51:20Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 15:53–18:11 on the 1st, 15:54–18:12 on the 2nd.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 138 of 138 minutes on the 1st and 0 of 138 on the 2nd.", "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 15939 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Thursday 1 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Lu’an, 2018: Friday 2 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": "2018-03-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-02", "confidence": "determinate" } ], "quote": "In Lu’an, Holī 2018 falls on Friday 2 March. It is kept the day after Holikā Dahana, which falls on Thursday 1 March. Pūrṇimā runs from 11:28 on Thu 1 Mar to 08:51 on Fri 2 Mar and covers all of sāyāhna on the 1st.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-02", "confidence": "boundary", "boundary_reasons": [ "margin", "absent-unstated" ], "boundary_margin_s": 241, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2018-03-02T08:51:20+08:00", "utc": "2018-03-02T00:51:20Z", "ms": 1519951880069.761 }, "end": { "local": "2018-03-03T06:35:31+08:00", "utc": "2018-03-02T22:35:31Z", "ms": 1520030131395.1226 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-02T08:51:20+08:00", "utc": "2018-03-02T00:51:20Z", "ms": 1519951880069.761 }, "end": { "local": "2018-03-03T06:35:31+08:00", "utc": "2018-03-02T22:35:31Z", "ms": 1520030131395.1226 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-03-02", "window": { "start": { "local": "2018-03-02T06:40:42+08:00", "utc": "2018-03-01T22:40:42Z", "ms": 1519944042208.8198 }, "end": { "local": "2018-03-02T06:40:42+08:00", "utc": "2018-03-01T22:40:42Z", "ms": 1519944042208.8198 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-03-03", "window": { "start": { "local": "2018-03-03T06:39:33+08:00", "utc": "2018-03-02T22:39:33Z", "ms": 1520030372513.2625 }, "end": { "local": "2018-03-03T06:39:33+08:00", "utc": "2018-03-02T22:39:33Z", "ms": 1520030372513.2625 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 08:51 on Fri 2 Mar to 06:36 on Sat 3 Mar.", "fact": "2018-03-02T00:51:20Z → 2018-03-02T22:35:31Z" }, { "step": "kaala", "text": "Sunrise is at 06:41 on the 2nd and 06:40 on the 3rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be current at sunrise. It is not 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": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: purvaviddha → tithi-day · margin 241 s < 300 s" }, { "step": "ruling", "text": "Vasantotsava, Lu’an, 2018: Friday 2 March.", "fact": "confidence: boundary (margin, absent-unstated)" } ], "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": "2018-03-02", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-02", "confidence": "boundary" } ], "quote": "In Lu’an, Vasantotsava 2018 falls on Friday 2 March. Pratipadā runs from 08:51 on Fri 2 Mar to 06:36 on Sat 3 Mar, and is current at sunrise on neither day. It is 4 min 01 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/sankashta-chaturthi?on=2018-03-05", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19833, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-03-05T03:37:56+08:00", "utc": "2018-03-04T19:37:56Z", "ms": 1520192276265.9006 }, "end": { "local": "2018-03-06T03:09:45+08:00", "utc": "2018-03-05T19:09:45Z", "ms": 1520276985167.4338 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-05T03:37:56+08:00", "utc": "2018-03-04T19:37:56Z", "ms": 1520192276265.9006 }, "end": { "local": "2018-03-06T03:09:45+08:00", "utc": "2018-03-05T19:09:45Z", "ms": 1520276985167.4338 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-03-04", "window": { "start": { "local": "2018-03-04T20:39:23+08:00", "utc": "2018-03-04T12:39:23Z", "ms": 1520167163050.8943 }, "end": { "local": "2018-03-04T20:39:23+08:00", "utc": "2018-03-04T12:39:23Z", "ms": 1520167163050.8943 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-03-05", "window": { "start": { "local": "2018-03-05T21:39:12+08:00", "utc": "2018-03-05T13:39:12Z", "ms": 1520257151858.9946 }, "end": { "local": "2018-03-05T21:39:12+08:00", "utc": "2018-03-05T13:39:12Z", "ms": 1520257151858.9946 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 03:38 on Mon 5 Mar to 03:10 on Tue 6 Mar.", "fact": "2018-03-04T19:37:56Z → 2018-03-05T19:09:45Z" }, { "step": "kaala", "text": "Moonrise is at 20:39 on the 4th and 21:39 on the 5th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 4th and is on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19833 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lu’an, 2018: Monday 5 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": "2018-03-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-05", "confidence": "determinate" } ], "quote": "In Lu’an, Saṅkaṣṭa Caturthī 2018 falls on Monday 5 March. Caturthī runs from 03:38 on Mon 5 Mar to 03:10 on Tue 6 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/sankashta-chaturthi?on=2018-03-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12572, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2018-03-09T06:15:01+08:00", "utc": "2018-03-08T22:15:01Z", "ms": 1520547301334.054 }, "end": { "local": "2018-03-10T08:30:59+08:00", "utc": "2018-03-10T00:30:59Z", "ms": 1520641859012.4749 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-09T06:15:01+08:00", "utc": "2018-03-08T22:15:01Z", "ms": 1520547301334.054 }, "end": { "local": "2018-03-10T08:30:59+08:00", "utc": "2018-03-10T00:30:59Z", "ms": 1520641859012.4749 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-03-09", "window": { "start": { "local": "2018-03-09T12:00:46+08:00", "utc": "2018-03-09T04:00:46Z", "ms": 1520568045725.6367 }, "end": { "local": "2018-03-09T12:48:46+08:00", "utc": "2018-03-09T04:48:46Z", "ms": 1520570925725.6367 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-03-10", "window": { "start": { "local": "2018-03-10T12:00:31+08:00", "utc": "2018-03-10T04:00:31Z", "ms": 1520654430607.8188 }, "end": { "local": "2018-03-10T12:48:31+08:00", "utc": "2018-03-10T04:48:31Z", "ms": 1520657310607.8188 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 06:15 on Fri 9 Mar to 08:31 on Sat 10 Mar.", "fact": "2018-03-08T22:15:01Z → 2018-03-10T00:30:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:01–12:49 on the 9th, 12:01–12:49 on the 10th.", "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 9th and 0 of 48 on the 10th.", "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 12572 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Lu’an, 2018: Friday 9 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": "2018-03-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-09", "confidence": "determinate" } ], "quote": "In Lu’an, Śītalāṣṭamī 2018 falls on Friday 9 March. Aṣṭamī runs from 06:15 on Fri 9 Mar to 08:31 on Sat 10 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-03-13", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26111, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-03-12T13:43:52+08:00", "utc": "2018-03-12T05:43:52Z", "ms": 1520833432205.4226 }, "end": { "local": "2018-03-13T16:11:19+08:00", "utc": "2018-03-13T08:11:19Z", "ms": 1520928678778.7065 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-12T13:43:52+08:00", "utc": "2018-03-12T05:43:52Z", "ms": 1520833432205.4226 }, "end": { "local": "2018-03-13T16:11:19+08:00", "utc": "2018-03-13T08:11:19Z", "ms": 1520928678778.7065 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-03-12", "window": { "start": { "local": "2018-03-12T06:28:41+08:00", "utc": "2018-03-11T22:28:41Z", "ms": 1520807321222.9993 }, "end": { "local": "2018-03-12T06:28:41+08:00", "utc": "2018-03-11T22:28:41Z", "ms": 1520807321222.9993 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-03-13", "window": { "start": { "local": "2018-03-13T06:27:27+08:00", "utc": "2018-03-12T22:27:27Z", "ms": 1520893646742.1526 }, "end": { "local": "2018-03-13T06:27:27+08:00", "utc": "2018-03-12T22:27:27Z", "ms": 1520893646742.1526 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 13:44 on Mon 12 Mar to 16:11 on Tue 13 Mar.", "fact": "2018-03-12T05:43:52Z → 2018-03-13T08:11:19Z" }, { "step": "kaala", "text": "Sunrise is at 06:29 on the 12th and 06:27 on the 13th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 12th and is on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26111 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Lu’an, 2018: Tuesday 13 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": "2018-03-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-13", "confidence": "determinate" } ], "quote": "In Lu’an, Pāpamocanī Ekādaśī 2018 falls on Tuesday 13 March. Ekādaśī runs from 13:44 on Mon 12 Mar to 16:11 on Tue 13 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-03-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-03-14", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-14", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 287, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-03-14T18:15:56+08:00", "utc": "2018-03-14T10:15:56Z", "ms": 1521022555743.3228 }, "end": { "local": "2018-03-15T19:49:34+08:00", "utc": "2018-03-15T11:49:34Z", "ms": 1521114574412.672 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-14T18:15:56+08:00", "utc": "2018-03-14T10:15:56Z", "ms": 1521022555743.3228 }, "end": { "local": "2018-03-15T19:49:34+08:00", "utc": "2018-03-15T11:49:34Z", "ms": 1521114574412.672 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-03-14", "window": { "start": { "local": "2018-03-14T18:20:42+08:00", "utc": "2018-03-14T10:20:42Z", "ms": 1521022842279.4465 }, "end": { "local": "2018-03-14T19:57:16+08:00", "utc": "2018-03-14T11:57:16Z", "ms": 1521028636222.7988 } }, "covered_min": 97, "window_min": 97, "qualifies": true }, { "local_date": "2018-03-15", "window": { "start": { "local": "2018-03-15T18:21:24+08:00", "utc": "2018-03-15T10:21:24Z", "ms": 1521109284293.7397 }, "end": { "local": "2018-03-15T19:57:43+08:00", "utc": "2018-03-15T11:57:43Z", "ms": 1521115062588.1873 } }, "covered_min": 88, "window_min": 96, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:16 on Wed 14 Mar to 19:50 on Thu 15 Mar.", "fact": "2018-03-14T10:15:56Z → 2018-03-15T11:49:34Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:21–19:57 on the 14th, 18:21–19:58 on the 15th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 97 of 97 minutes on the 14th and 88 of 96 on the 15th.", "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 287 s < 300 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lu’an, 2018: Wednesday 14 March.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-03-14", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-14", "confidence": "boundary" } ], "quote": "In Lu’an, Kṛṣṇa Pradoṣa Vrata 2018 falls on Wednesday 14 March. Trayodaśī runs from 18:16 on Wed 14 Mar to 19:50 on Thu 15 Mar and covers all of pradoṣa that evening. It also reaches the next evening for 88 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 4 min 47 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-03-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/shivaratri?on=2018-03-15", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11402, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-03-15T19:49:34+08:00", "utc": "2018-03-15T11:49:34Z", "ms": 1521114574412.672 }, "end": { "local": "2018-03-16T20:48:14+08:00", "utc": "2018-03-16T12:48:14Z", "ms": 1521204494383.6106 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-15T19:49:34+08:00", "utc": "2018-03-15T11:49:34Z", "ms": 1521114574412.672 }, "end": { "local": "2018-03-16T20:48:14+08:00", "utc": "2018-03-16T12:48:14Z", "ms": 1521204494383.6106 } }, "kaala": "nishita", "days": [ { "local_date": "2018-03-15", "window": { "start": { "local": "2018-03-15T23:58:33+08:00", "utc": "2018-03-15T15:58:33Z", "ms": 1521129512897.918 }, "end": { "local": "2018-03-16T00:46:33+08:00", "utc": "2018-03-15T16:46:33Z", "ms": 1521132392897.918 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-03-16", "window": { "start": { "local": "2018-03-16T23:58:16+08:00", "utc": "2018-03-16T15:58:16Z", "ms": 1521215896012.5083 }, "end": { "local": "2018-03-17T00:46:16+08:00", "utc": "2018-03-16T16:46:16Z", "ms": 1521218776012.5083 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 19:50 on Thu 15 Mar to 20:48 on Fri 16 Mar.", "fact": "2018-03-15T11:49:34Z → 2018-03-16T12:48:14Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:59–00:47 on the 15th, 23:58–00:46 on the 16th.", "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 15th and 0 of 48 on the 16th.", "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 11402 s" }, { "step": "ruling", "text": "Śivarātri, Lu’an, 2018: Thursday 15 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": "2018-03-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-15", "confidence": "determinate" } ], "quote": "In Lu’an, Śivarātri 2018 falls on Thursday 15 March. Caturdaśī runs from 19:50 on Thu 15 Mar to 20:48 on Fri 16 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/shivaratri?on=2018-03-15", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29735, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2018-03-17T21:11:34+08:00", "utc": "2018-03-17T13:11:34Z", "ms": 1521292293885.157 }, "end": { "local": "2018-03-18T21:01:54+08:00", "utc": "2018-03-18T13:01:54Z", "ms": 1521378114379.9058 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-17T21:11:34+08:00", "utc": "2018-03-17T13:11:34Z", "ms": 1521292293885.157 }, "end": { "local": "2018-03-18T21:01:54+08:00", "utc": "2018-03-18T13:01:54Z", "ms": 1521378114379.9058 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-03-17", "window": { "start": { "local": "2018-03-17T11:58:37+08:00", "utc": "2018-03-17T03:58:37Z", "ms": 1521259116828.1592 }, "end": { "local": "2018-03-17T12:46:37+08:00", "utc": "2018-03-17T04:46:37Z", "ms": 1521261996828.1592 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-03-18", "window": { "start": { "local": "2018-03-18T11:58:20+08:00", "utc": "2018-03-18T03:58:20Z", "ms": 1521345499653.5942 }, "end": { "local": "2018-03-18T12:46:20+08:00", "utc": "2018-03-18T04:46:20Z", "ms": 1521348379653.5942 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 21:12 on Sat 17 Mar to 21:02 on Sun 18 Mar.", "fact": "2018-03-17T13:11:34Z → 2018-03-18T13:01:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 17th, 11:58–12:46 on the 18th.", "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 17th and 48 of 48 on the 18th.", "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 29735 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Lu’an, 2018: Sunday 18 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": "2018-03-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-18", "confidence": "determinate" } ], "quote": "In Lu’an, Navarātrārambha (Caitra) (Chaitra Navratri) 2018 falls on Sunday 18 March. Pratipadā runs from 21:12 on Sat 17 Mar to 21:02 on Sun 18 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23691, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2018-03-19T20:23:19+08:00", "utc": "2018-03-19T12:23:19Z", "ms": 1521462198819.3254 }, "end": { "local": "2018-03-20T19:20:36+08:00", "utc": "2018-03-20T11:20:36Z", "ms": 1521544835724.568 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-19T20:23:19+08:00", "utc": "2018-03-19T12:23:19Z", "ms": 1521462198819.3254 }, "end": { "local": "2018-03-20T19:20:36+08:00", "utc": "2018-03-20T11:20:36Z", "ms": 1521544835724.568 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-03-19", "window": { "start": { "local": "2018-03-19T11:58:02+08:00", "utc": "2018-03-19T03:58:02Z", "ms": 1521431882300.2559 }, "end": { "local": "2018-03-19T12:46:02+08:00", "utc": "2018-03-19T04:46:02Z", "ms": 1521434762300.2559 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-03-20", "window": { "start": { "local": "2018-03-20T11:57:45+08:00", "utc": "2018-03-20T03:57:45Z", "ms": 1521518264784.6978 }, "end": { "local": "2018-03-20T12:45:45+08:00", "utc": "2018-03-20T04:45:45Z", "ms": 1521521144784.6978 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 20:23 on Mon 19 Mar to 19:21 on Tue 20 Mar.", "fact": "2018-03-19T12:23:19Z → 2018-03-20T11:20:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 19th, 11:58–12:46 on the 20th.", "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 19th and 48 of 48 on the 20th.", "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 23691 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Lu’an, 2018: Tuesday 20 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gauri-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-03-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-20", "confidence": "determinate" } ], "quote": "In Lu’an, Gaurī Tṛtīyā (Gangaur) 2018 falls on Tuesday 20 March. Tṛtīyā runs from 20:23 on Mon 19 Mar to 19:21 on Tue 20 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23691, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2018-03-19T20:23:19+08:00", "utc": "2018-03-19T12:23:19Z", "ms": 1521462198819.3254 }, "end": { "local": "2018-03-20T19:20:36+08:00", "utc": "2018-03-20T11:20:36Z", "ms": 1521544835724.568 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-19T20:23:19+08:00", "utc": "2018-03-19T12:23:19Z", "ms": 1521462198819.3254 }, "end": { "local": "2018-03-20T19:20:36+08:00", "utc": "2018-03-20T11:20:36Z", "ms": 1521544835724.568 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-03-19", "window": { "start": { "local": "2018-03-19T11:58:02+08:00", "utc": "2018-03-19T03:58:02Z", "ms": 1521431882300.2559 }, "end": { "local": "2018-03-19T12:46:02+08:00", "utc": "2018-03-19T04:46:02Z", "ms": 1521434762300.2559 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-03-20", "window": { "start": { "local": "2018-03-20T11:57:45+08:00", "utc": "2018-03-20T03:57:45Z", "ms": 1521518264784.6978 }, "end": { "local": "2018-03-20T12:45:45+08:00", "utc": "2018-03-20T04:45:45Z", "ms": 1521521144784.6978 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 20:23 on Mon 19 Mar to 19:21 on Tue 20 Mar.", "fact": "2018-03-19T12:23:19Z → 2018-03-20T11:20:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 19th, 11:58–12:46 on the 20th.", "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 19th and 48 of 48 on the 20th.", "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 23691 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Lu’an, 2018: Tuesday 20 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "saubhagya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-03-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-20", "confidence": "determinate" } ], "quote": "In Lu’an, Saubhāgya Śayana Vrata 2018 falls on Tuesday 20 March. Tṛtīyā runs from 20:23 on Mon 19 Mar to 19:21 on Tue 20 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-03-21", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18788, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-03-20T19:20:36+08:00", "utc": "2018-03-20T11:20:36Z", "ms": 1521544835724.568 }, "end": { "local": "2018-03-21T17:58:35+08:00", "utc": "2018-03-21T09:58:35Z", "ms": 1521626314837.9978 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-20T19:20:36+08:00", "utc": "2018-03-20T11:20:36Z", "ms": 1521544835724.568 }, "end": { "local": "2018-03-21T17:58:35+08:00", "utc": "2018-03-21T09:58:35Z", "ms": 1521626314837.9978 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-03-20", "window": { "start": { "local": "2018-03-20T11:57:45+08:00", "utc": "2018-03-20T03:57:45Z", "ms": 1521518264784.6978 }, "end": { "local": "2018-03-20T12:45:45+08:00", "utc": "2018-03-20T04:45:45Z", "ms": 1521521144784.6978 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-03-21", "window": { "start": { "local": "2018-03-21T11:57:27+08:00", "utc": "2018-03-21T03:57:27Z", "ms": 1521604647123.5767 }, "end": { "local": "2018-03-21T12:45:27+08:00", "utc": "2018-03-21T04:45:27Z", "ms": 1521607527123.5767 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:21 on Tue 20 Mar to 17:59 on Wed 21 Mar.", "fact": "2018-03-20T11:20:36Z → 2018-03-21T09:58:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 20th, 11:57–12:45 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18788 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lu’an, 2018: Wednesday 21 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": "2018-03-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-21", "confidence": "determinate" } ], "quote": "In Lu’an, Vināyaka Caturthī 2018 falls on Wednesday 21 March. Caturthī runs from 19:21 on Tue 20 Mar to 17:59 on Wed 21 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-03-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12987, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2018-03-21T17:58:35+08:00", "utc": "2018-03-21T09:58:35Z", "ms": 1521626314837.9978 }, "end": { "local": "2018-03-22T16:21:36+08:00", "utc": "2018-03-22T08:21:36Z", "ms": 1521706896378.8286 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-21T17:58:35+08:00", "utc": "2018-03-21T09:58:35Z", "ms": 1521626314837.9978 }, "end": { "local": "2018-03-22T16:21:36+08:00", "utc": "2018-03-22T08:21:36Z", "ms": 1521706896378.8286 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-03-21", "window": { "start": { "local": "2018-03-21T11:57:27+08:00", "utc": "2018-03-21T03:57:27Z", "ms": 1521604647123.5767 }, "end": { "local": "2018-03-21T12:45:27+08:00", "utc": "2018-03-21T04:45:27Z", "ms": 1521607527123.5767 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-03-22", "window": { "start": { "local": "2018-03-22T11:57:09+08:00", "utc": "2018-03-22T03:57:09Z", "ms": 1521691029333.8718 }, "end": { "local": "2018-03-22T12:45:09+08:00", "utc": "2018-03-22T04:45:09Z", "ms": 1521693909333.8718 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 17:59 on Wed 21 Mar to 16:22 on Thu 22 Mar.", "fact": "2018-03-21T09:58:35Z → 2018-03-22T08:21:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 21st, 11:57–12:45 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 12987 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Lu’an, 2018: Thursday 22 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "lakshmi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri pancami or Laksmi pancami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-03-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-22", "confidence": "determinate" } ], "quote": "In Lu’an, Lakṣmī Pañcamī 2018 falls on Thursday 22 March. Pañcamī runs from 17:59 on Wed 21 Mar to 16:22 on Thu 22 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 499, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2018-03-24T12:36:14+08:00", "utc": "2018-03-24T04:36:14Z", "ms": 1521866174113.8967 }, "end": { "local": "2018-03-25T10:32:42+08:00", "utc": "2018-03-25T02:32:42Z", "ms": 1521945161961.511 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-24T12:36:14+08:00", "utc": "2018-03-24T04:36:14Z", "ms": 1521866174113.8967 }, "end": { "local": "2018-03-25T10:32:42+08:00", "utc": "2018-03-25T02:32:42Z", "ms": 1521945161961.511 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-03-24", "window": { "start": { "local": "2018-03-24T11:56:33+08:00", "utc": "2018-03-24T03:56:33Z", "ms": 1521863793439.539 }, "end": { "local": "2018-03-24T12:44:33+08:00", "utc": "2018-03-24T04:44:33Z", "ms": 1521866673439.539 } }, "covered_min": 8, "window_min": 48, "qualifies": true }, { "local_date": "2018-03-25", "window": { "start": { "local": "2018-03-25T11:56:15+08:00", "utc": "2018-03-25T03:56:15Z", "ms": 1521950175372.3457 }, "end": { "local": "2018-03-25T12:44:15+08:00", "utc": "2018-03-25T04:44:15Z", "ms": 1521953055372.3457 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 12:36 on Sat 24 Mar to 10:33 on Sun 25 Mar.", "fact": "2018-03-24T04:36:14Z → 2018-03-25T02:32:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 24th, 11:56–12:44 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 8 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 499 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Lu’an, 2018: Saturday 24 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhavani-utpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Annapurna puja (Beng.) (paraviddha), Bhavani-utpatti (paraviddha), Asokastami (Special when combined with naks. Punarvasu and Wednesday, after mid-day)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-03-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-24", "confidence": "determinate" } ], "quote": "In Lu’an, Bhavānī Utpatti 2018 falls on Saturday 24 March. Aṣṭamī runs from 12:36 on Sat 24 Mar to 10:33 on Sun 25 Mar and covers 8 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5013, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2018-03-25T10:32:42+08:00", "utc": "2018-03-25T02:32:42Z", "ms": 1521945161961.511 }, "end": { "local": "2018-03-26T08:24:26+08:00", "utc": "2018-03-26T00:24:26Z", "ms": 1522023865953.7659 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-25T10:32:42+08:00", "utc": "2018-03-25T02:32:42Z", "ms": 1521945161961.511 }, "end": { "local": "2018-03-26T08:24:26+08:00", "utc": "2018-03-26T00:24:26Z", "ms": 1522023865953.7659 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-03-25", "window": { "start": { "local": "2018-03-25T11:56:15+08:00", "utc": "2018-03-25T03:56:15Z", "ms": 1521950175372.3457 }, "end": { "local": "2018-03-25T12:44:15+08:00", "utc": "2018-03-25T04:44:15Z", "ms": 1521953055372.3457 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-03-26", "window": { "start": { "local": "2018-03-26T11:55:57+08:00", "utc": "2018-03-26T03:55:57Z", "ms": 1522036557251.7131 }, "end": { "local": "2018-03-26T12:43:57+08:00", "utc": "2018-03-26T04:43:57Z", "ms": 1522039437251.7131 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 10:33 on Sun 25 Mar to 08:24 on Mon 26 Mar.", "fact": "2018-03-25T02:32:42Z → 2018-03-26T00:24:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 25th, 11:56–12:44 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 25th and 0 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5013 s" }, { "step": "ruling", "text": "Rāma Navamī, Lu’an, 2018: Sunday 25 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rama-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Ramanavami (madhyahnavyapini, special with Punarvasu naks.), Rama jayanti." } ], "not_evaluated": "The row calls the day special when it falls with Punarvasu nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-25", "confidence": "determinate" } ], "quote": "In Lu’an, Rāma Navamī 2018 falls on Sunday 25 March. Navamī runs from 10:33 on Sun 25 Mar to 08:24 on Mon 26 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-03-27", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-27", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 219, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-03-27T06:13:22+08:00", "utc": "2018-03-26T22:13:22Z", "ms": 1522102401600.8262 }, "end": { "local": "2018-03-28T04:01:58+08:00", "utc": "2018-03-27T20:01:58Z", "ms": 1522180917921.2026 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-27T06:13:22+08:00", "utc": "2018-03-26T22:13:22Z", "ms": 1522102401600.8262 }, "end": { "local": "2018-03-28T04:01:58+08:00", "utc": "2018-03-27T20:01:58Z", "ms": 1522180917921.2026 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-03-27", "window": { "start": { "local": "2018-03-27T06:09:43+08:00", "utc": "2018-03-26T22:09:43Z", "ms": 1522102182687.5964 }, "end": { "local": "2018-03-27T06:09:43+08:00", "utc": "2018-03-26T22:09:43Z", "ms": 1522102182687.5964 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-03-28", "window": { "start": { "local": "2018-03-28T06:08:26+08:00", "utc": "2018-03-27T22:08:26Z", "ms": 1522188506229.411 }, "end": { "local": "2018-03-28T06:08:26+08:00", "utc": "2018-03-27T22:08:26Z", "ms": 1522188506229.411 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:13 on Tue 27 Mar to 04:02 on Wed 28 Mar.", "fact": "2018-03-26T22:13:22Z → 2018-03-27T20:01:58Z" }, { "step": "kaala", "text": "Sunrise is at 06:10 on the 27th and 06:08 on the 28th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 219 s < 300 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Lu’an, 2018: Tuesday 27 March.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-03-27", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-27", "confidence": "boundary" } ], "quote": "In Lu’an, Kāmadā Ekādaśī 2018 falls on Tuesday 27 March. Ekādaśī runs from 06:13 on Tue 27 Mar to 04:02 on Wed 28 Mar, and is current at sunrise on neither day. It is 3 min 39 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-03-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36085, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-03-29T01:53:38+08:00", "utc": "2018-03-28T17:53:38Z", "ms": 1522259618014.973 }, "end": { "local": "2018-03-29T23:52:50+08:00", "utc": "2018-03-29T15:52:50Z", "ms": 1522338770097.7295 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-29T01:53:38+08:00", "utc": "2018-03-28T17:53:38Z", "ms": 1522259618014.973 }, "end": { "local": "2018-03-29T23:52:50+08:00", "utc": "2018-03-29T15:52:50Z", "ms": 1522338770097.7295 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-03-29", "window": { "start": { "local": "2018-03-29T11:55:03+08:00", "utc": "2018-03-29T03:55:03Z", "ms": 1522295702786.4922 }, "end": { "local": "2018-03-29T12:43:03+08:00", "utc": "2018-03-29T04:43:03Z", "ms": 1522298582786.4922 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-03-30", "window": { "start": { "local": "2018-03-30T11:54:45+08:00", "utc": "2018-03-30T03:54:45Z", "ms": 1522382084673.6794 }, "end": { "local": "2018-03-30T12:42:45+08:00", "utc": "2018-03-30T04:42:45Z", "ms": 1522384964673.6794 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:54 on Thu 29 Mar to 23:53 on Thu 29 Mar.", "fact": "2018-03-28T17:53:38Z → 2018-03-29T15:52:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 29th, 11:55–12:43 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 36085 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Lu’an, 2018: Thursday 29 March.", "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": "2018-03-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-29", "confidence": "determinate" } ], "quote": "In Lu’an, Anaṅga Trayodaśī 2018 falls on Thursday 29 March. Trayodaśī runs from 01:54 on Thu 29 Mar to 23:53 on Thu 29 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/pradosha-vrata?on=2018-03-29", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13755, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-03-29T01:53:38+08:00", "utc": "2018-03-28T17:53:38Z", "ms": 1522259618014.973 }, "end": { "local": "2018-03-29T23:52:50+08:00", "utc": "2018-03-29T15:52:50Z", "ms": 1522338770097.7295 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-29T01:53:38+08:00", "utc": "2018-03-28T17:53:38Z", "ms": 1522259618014.973 }, "end": { "local": "2018-03-29T23:52:50+08:00", "utc": "2018-03-29T15:52:50Z", "ms": 1522338770097.7295 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-03-28", "window": { "start": { "local": "2018-03-28T18:30:16+08:00", "utc": "2018-03-28T10:30:16Z", "ms": 1522233015642.8215 }, "end": { "local": "2018-03-28T20:03:11+08:00", "utc": "2018-03-28T12:03:11Z", "ms": 1522238590872.3071 } }, "covered_min": 0, "window_min": 93, "qualifies": false }, { "local_date": "2018-03-29", "window": { "start": { "local": "2018-03-29T18:30:56+08:00", "utc": "2018-03-29T10:30:56Z", "ms": 1522319455709.0217 }, "end": { "local": "2018-03-29T20:03:35+08:00", "utc": "2018-03-29T12:03:35Z", "ms": 1522325015430.8171 } }, "covered_min": 93, "window_min": 93, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:54 on Thu 29 Mar to 23:53 on Thu 29 Mar.", "fact": "2018-03-28T17:53:38Z → 2018-03-29T15:52:50Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:30–20:03 on the 28th, 18:31–20:04 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 93 minutes on the 28th and 93 of 93 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 13755 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lu’an, 2018: Thursday 29 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": "2018-03-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-29", "confidence": "determinate" } ], "quote": "In Lu’an, Śukla Pradoṣa Vrata 2018 falls on Thursday 29 March. Trayodaśī runs from 01:54 on Thu 29 Mar to 23:53 on Thu 29 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-03-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33742, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-03-29T23:52:50+08:00", "utc": "2018-03-29T15:52:50Z", "ms": 1522338770097.7295 }, "end": { "local": "2018-03-30T22:05:07+08:00", "utc": "2018-03-30T14:05:07Z", "ms": 1522418706652.5737 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-29T23:52:50+08:00", "utc": "2018-03-29T15:52:50Z", "ms": 1522338770097.7295 }, "end": { "local": "2018-03-30T22:05:07+08:00", "utc": "2018-03-30T14:05:07Z", "ms": 1522418706652.5737 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-03-29", "window": { "start": { "local": "2018-03-29T11:55:03+08:00", "utc": "2018-03-29T03:55:03Z", "ms": 1522295702786.4922 }, "end": { "local": "2018-03-29T12:43:03+08:00", "utc": "2018-03-29T04:43:03Z", "ms": 1522298582786.4922 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-03-30", "window": { "start": { "local": "2018-03-30T11:54:45+08:00", "utc": "2018-03-30T03:54:45Z", "ms": 1522382084673.6794 }, "end": { "local": "2018-03-30T12:42:45+08:00", "utc": "2018-03-30T04:42:45Z", "ms": 1522384964673.6794 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:53 on Thu 29 Mar to 22:05 on Fri 30 Mar.", "fact": "2018-03-29T15:52:50Z → 2018-03-30T14:05:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 29th, 11:55–12:43 on the 30th.", "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 29th and 48 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 33742 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Lu’an, 2018: Friday 30 March.", "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": "2018-03-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-30", "confidence": "determinate" } ], "quote": "In Lu’an, Viṣṇudamanaka Caturdaśī 2018 falls on Friday 30 March. Caturdaśī runs from 23:53 on Thu 29 Mar to 22:05 on Fri 30 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28464, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-03-30T22:05:07+08:00", "utc": "2018-03-30T14:05:07Z", "ms": 1522418706652.5737 }, "end": { "local": "2018-03-31T20:36:51+08:00", "utc": "2018-03-31T12:36:51Z", "ms": 1522499810602.4788 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "2018-03-30T22:05:07+08:00", "utc": "2018-03-30T14:05:07Z", "ms": 1522418706652.5737 }, "end": { "local": "2018-03-31T20:36:51+08:00", "utc": "2018-03-31T12:36:51Z", "ms": 1522499810602.4788 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-03-30", "window": { "start": { "local": "2018-03-30T11:54:45+08:00", "utc": "2018-03-30T03:54:45Z", "ms": 1522382084673.6794 }, "end": { "local": "2018-03-30T12:42:45+08:00", "utc": "2018-03-30T04:42:45Z", "ms": 1522384964673.6794 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-03-31", "window": { "start": { "local": "2018-03-31T11:54:27+08:00", "utc": "2018-03-31T03:54:27Z", "ms": 1522468466621.574 }, "end": { "local": "2018-03-31T12:42:27+08:00", "utc": "2018-03-31T04:42:27Z", "ms": 1522471346621.574 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 22:05 on Fri 30 Mar to 20:37 on Sat 31 Mar.", "fact": "2018-03-30T14:05:07Z → 2018-03-31T12:36:51Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 30th, 11:54–12:42 on the 31st.", "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 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 28464 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Lu’an, 2018: Saturday 31 March.", "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": "2018-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-03-31", "confidence": "determinate" } ], "quote": "In Lu’an, Caitrī Pūrṇimā 2018 falls on Saturday 31 March. Pūrṇimā runs from 22:05 on Fri 30 Mar to 20:37 on Sat 31 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/sankashta-chaturthi?on=2018-04-03", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7601, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-04-03T19:13:50+08:00", "utc": "2018-04-03T11:13:50Z", "ms": 1522754029994.8984 }, "end": { "local": "2018-04-04T20:02:47+08:00", "utc": "2018-04-04T12:02:47Z", "ms": 1522843367219.3318 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-03T19:13:50+08:00", "utc": "2018-04-03T11:13:50Z", "ms": 1522754029994.8984 }, "end": { "local": "2018-04-04T20:02:47+08:00", "utc": "2018-04-04T12:02:47Z", "ms": 1522843367219.3318 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-04-03", "window": { "start": { "local": "2018-04-03T21:20:31+08:00", "utc": "2018-04-03T13:20:31Z", "ms": 1522761630994.534 }, "end": { "local": "2018-04-03T21:20:31+08:00", "utc": "2018-04-03T13:20:31Z", "ms": 1522761630994.534 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-04-04", "window": { "start": { "local": "2018-04-04T22:17:05+08:00", "utc": "2018-04-04T14:17:05Z", "ms": 1522851425446.358 }, "end": { "local": "2018-04-04T22:17:05+08:00", "utc": "2018-04-04T14:17:05Z", "ms": 1522851425446.358 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:14 on Tue 3 Apr to 20:03 on Wed 4 Apr.", "fact": "2018-04-03T11:13:50Z → 2018-04-04T12:02:47Z" }, { "step": "kaala", "text": "Moonrise is at 21:21 on the 3rd and 22:17 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 3rd and is not on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7601 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lu’an, 2018: Tuesday 3 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": "2018-04-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-03", "confidence": "determinate" } ], "quote": "In Lu’an, Saṅkaṣṭa Caturthī 2018 falls on Tuesday 3 April. Caturthī runs from 19:14 on Tue 3 Apr to 20:03 on Wed 4 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/sankashta-chaturthi?on=2018-04-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/ekadashi?on=2018-04-12", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11981, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-04-11T09:10:40+08:00", "utc": "2018-04-11T01:10:40Z", "ms": 1523409040078.2864 }, "end": { "local": "2018-04-12T10:43:11+08:00", "utc": "2018-04-12T02:43:11Z", "ms": 1523500990643.2297 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-11T09:10:40+08:00", "utc": "2018-04-11T01:10:40Z", "ms": 1523409040078.2864 }, "end": { "local": "2018-04-12T10:43:11+08:00", "utc": "2018-04-12T02:43:11Z", "ms": 1523500990643.2297 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-04-11", "window": { "start": { "local": "2018-04-11T05:51:00+08:00", "utc": "2018-04-10T21:51:00Z", "ms": 1523397059526.8872 }, "end": { "local": "2018-04-11T05:51:00+08:00", "utc": "2018-04-10T21:51:00Z", "ms": 1523397059526.8872 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-04-12", "window": { "start": { "local": "2018-04-12T05:49:48+08:00", "utc": "2018-04-11T21:49:48Z", "ms": 1523483387635.9949 }, "end": { "local": "2018-04-12T05:49:48+08:00", "utc": "2018-04-11T21:49:48Z", "ms": 1523483387635.9949 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:11 on Wed 11 Apr to 10:43 on Thu 12 Apr.", "fact": "2018-04-11T01:10:40Z → 2018-04-12T02:43:11Z" }, { "step": "kaala", "text": "Sunrise is at 05:51 on the 11th and 05:50 on the 12th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 11th and is 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 11981 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Lu’an, 2018: Thursday 12 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": "2018-04-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-12", "confidence": "determinate" } ], "quote": "In Lu’an, Varūthinī Ekādaśī 2018 falls on Thursday 12 April. Ekādaśī runs from 09:11 on Wed 11 Apr to 10:43 on Thu 12 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-04-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-04-13", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25186, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-04-13T11:34:21+08:00", "utc": "2018-04-13T03:34:21Z", "ms": 1523590460980.756 }, "end": { "local": "2018-04-14T11:41:53+08:00", "utc": "2018-04-14T03:41:53Z", "ms": 1523677313001.8271 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-13T11:34:21+08:00", "utc": "2018-04-13T03:34:21Z", "ms": 1523590460980.756 }, "end": { "local": "2018-04-14T11:41:53+08:00", "utc": "2018-04-14T03:41:53Z", "ms": 1523677313001.8271 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-04-13", "window": { "start": { "local": "2018-04-13T18:40:58+08:00", "utc": "2018-04-13T10:40:58Z", "ms": 1523616058403.421 }, "end": { "local": "2018-04-13T20:09:50+08:00", "utc": "2018-04-13T12:09:50Z", "ms": 1523621390012.6821 } }, "covered_min": 89, "window_min": 89, "qualifies": true }, { "local_date": "2018-04-14", "window": { "start": { "local": "2018-04-14T18:41:39+08:00", "utc": "2018-04-14T10:41:39Z", "ms": 1523702499141.8657 }, "end": { "local": "2018-04-14T20:10:16+08:00", "utc": "2018-04-14T12:10:16Z", "ms": 1523707815956.4634 } }, "covered_min": 0, "window_min": 89, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:34 on Fri 13 Apr to 11:42 on Sat 14 Apr.", "fact": "2018-04-13T03:34:21Z → 2018-04-14T03:41:53Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:41–20:10 on the 13th, 18:42–20:10 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 89 of 89 minutes on the 13th and 0 of 89 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25186 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lu’an, 2018: Friday 13 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": "2018-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-13", "confidence": "determinate" } ], "quote": "In Lu’an, Kṛṣṇa Pradoṣa Vrata 2018 falls on Friday 13 April. Trayodaśī runs from 11:34 on Fri 13 Apr to 11:42 on Sat 14 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-04-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17729, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "2018-04-14T10:42:55+08:00", "utc": "2018-04-14T02:42:55Z", "ms": 1523673774781.6465 }, "end": { "local": "2018-05-15T07:33:16+08:00", "utc": "2018-05-14T23:33:16Z", "ms": 1526340795624.5295 } }, "span": { "of": "transit", "start": { "local": "2018-04-14T10:42:55+08:00", "utc": "2018-04-14T02:42:55Z", "ms": 1523673774781.6465 }, "end": { "local": "2018-04-14T10:42:55+08:00", "utc": "2018-04-14T02:42:55Z", "ms": 1523673774781.6465 } }, "kaala": "day", "days": [ { "local_date": "2018-04-13", "window": { "start": { "local": "2018-04-13T05:48:36+08:00", "utc": "2018-04-12T21:48:36Z", "ms": 1523569716276.1033 }, "end": { "local": "2018-04-14T05:47:25+08:00", "utc": "2018-04-13T21:47:25Z", "ms": 1523656045472.8804 } }, "covered_min": 0, "window_min": 1439, "qualifies": false }, { "local_date": "2018-04-14", "window": { "start": { "local": "2018-04-14T05:47:25+08:00", "utc": "2018-04-13T21:47:25Z", "ms": 1523656045472.8804 }, "end": { "local": "2018-04-15T05:46:15+08:00", "utc": "2018-04-14T21:46:15Z", "ms": 1523742375251.3489 } }, "covered_min": 1, "window_min": 1439, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 10:43 on Sat 14 Apr.", "fact": "2018-04-14T02:42:55Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:49 on the 13th, and from 05:47 on the 14th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 14th, not the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunrise → only-day · margin 17729 s" }, { "step": "ruling", "text": "Vaiśākhī, Lu’an, 2018: Saturday 14 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "vaishakhi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Mesadi — Cadaka puja (Bengal), Bahag Bihu (Assam), Cheiraoba (Manipur), Visu (T. C. State), Vaisakhi (on the samkramana day commencing from sunrise)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "not_evaluated": "The other names in the row (Cadaka puja, Bahag Bihu, Cheiraoba, Visu) are regional observances and wait with the regional rows.", "rashi": "Meṣa", "day_from": "sunrise" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "2018-04-14", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "2018-04-14", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Lu’an, Vaiśākhī 2018 falls on Saturday 14 April. The Sun enters Meṣa at 10:43 on Sat 14 Apr, and the rule counts the day from sunrise.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/shivaratri?on=2018-04-14", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37789, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-04-14T11:41:53+08:00", "utc": "2018-04-14T03:41:53Z", "ms": 1523677313001.8271 }, "end": { "local": "2018-04-15T11:07:46+08:00", "utc": "2018-04-15T03:07:46Z", "ms": 1523761665861.241 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-14T11:41:53+08:00", "utc": "2018-04-14T03:41:53Z", "ms": 1523677313001.8271 }, "end": { "local": "2018-04-15T11:07:46+08:00", "utc": "2018-04-15T03:07:46Z", "ms": 1523761665861.241 } }, "kaala": "nishita", "days": [ { "local_date": "2018-04-13", "window": { "start": { "local": "2018-04-13T23:50:12+08:00", "utc": "2018-04-13T15:50:12Z", "ms": 1523634611938.1506 }, "end": { "local": "2018-04-14T00:38:12+08:00", "utc": "2018-04-13T16:38:12Z", "ms": 1523637491938.1506 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-04-14", "window": { "start": { "local": "2018-04-14T23:49:57+08:00", "utc": "2018-04-14T15:49:57Z", "ms": 1523720997196.6074 }, "end": { "local": "2018-04-15T00:37:57+08:00", "utc": "2018-04-14T16:37:57Z", "ms": 1523723877196.6074 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 11:42 on Sat 14 Apr to 11:08 on Sun 15 Apr.", "fact": "2018-04-14T03:41:53Z → 2018-04-15T03:07:46Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:50–00:38 on the 13th, 23:50–00:38 on the 14th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 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. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 37789 s" }, { "step": "ruling", "text": "Śivarātri, Lu’an, 2018: Saturday 14 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": "2018-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-14", "confidence": "determinate" } ], "quote": "In Lu’an, Śivarātri 2018 falls on Saturday 14 April. Caturdaśī runs from 11:42 on Sat 14 Apr to 11:08 on Sun 15 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/shivaratri?on=2018-04-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1952, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2018-04-18T06:15:20+08:00", "utc": "2018-04-17T22:15:20Z", "ms": 1524003320050.7146 }, "end": { "local": "2018-04-19T03:59:58+08:00", "utc": "2018-04-18T19:59:58Z", "ms": 1524081598118.337 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-18T06:15:20+08:00", "utc": "2018-04-17T22:15:20Z", "ms": 1524003320050.7146 }, "end": { "local": "2018-04-19T03:59:58+08:00", "utc": "2018-04-18T19:59:58Z", "ms": 1524081598118.337 } }, "kaala": "purvahna", "days": [ { "local_date": "2018-04-18", "window": { "start": { "local": "2018-04-18T05:42:48+08:00", "utc": "2018-04-17T21:42:48Z", "ms": 1524001368318.0276 }, "end": { "local": "2018-04-18T10:03:20+08:00", "utc": "2018-04-18T02:03:20Z", "ms": 1524016999893.0159 } }, "covered_min": 228, "window_min": 261, "qualifies": true }, { "local_date": "2018-04-19", "window": { "start": { "local": "2018-04-19T05:41:41+08:00", "utc": "2018-04-18T21:41:41Z", "ms": 1524087700662.511 }, "end": { "local": "2018-04-19T10:02:49+08:00", "utc": "2018-04-19T02:02:49Z", "ms": 1524103368522.3188 } }, "covered_min": 0, "window_min": 261, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 06:15 on Wed 18 Apr to 04:00 on Thu 19 Apr.", "fact": "2018-04-17T22:15:20Z → 2018-04-18T19:59:58Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:43–10:03 on the 18th, 05:42–10:03 on the 19th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pūrvāhṇa. It covers 228 of 261 minutes on the 18th and 0 of 261 on the 19th.", "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 1952 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Lu’an, 2018: Wednesday 18 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "not_evaluated": "The row calls the day special with Rohiṇī nakṣatra and a Wednesday; neither is tested.", "kaala": "purvahna", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-04-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-18", "confidence": "determinate" } ], "quote": "In Lu’an, Akṣaya Tṛtīyā 2018 falls on Wednesday 18 April. Tṛtīyā runs from 06:15 on Wed 18 Apr to 04:00 on Thu 19 Apr and covers 228 of 261 minutes of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28077, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2018-04-18T06:15:20+08:00", "utc": "2018-04-17T22:15:20Z", "ms": 1524003320050.7146 }, "end": { "local": "2018-04-19T03:59:58+08:00", "utc": "2018-04-18T19:59:58Z", "ms": 1524081598118.337 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-18T06:15:20+08:00", "utc": "2018-04-17T22:15:20Z", "ms": 1524003320050.7146 }, "end": { "local": "2018-04-19T03:59:58+08:00", "utc": "2018-04-18T19:59:58Z", "ms": 1524081598118.337 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-04-17", "window": { "start": { "local": "2018-04-17T18:43:42+08:00", "utc": "2018-04-17T10:43:42Z", "ms": 1523961821929.883 }, "end": { "local": "2018-04-17T20:11:35+08:00", "utc": "2018-04-17T12:11:35Z", "ms": 1523967094781.6357 } }, "covered_min": 0, "window_min": 88, "qualifies": false }, { "local_date": "2018-04-18", "window": { "start": { "local": "2018-04-18T18:44:23+08:00", "utc": "2018-04-18T10:44:23Z", "ms": 1524048263042.9924 }, "end": { "local": "2018-04-18T20:12:01+08:00", "utc": "2018-04-18T12:12:01Z", "ms": 1524053521392.2615 } }, "covered_min": 88, "window_min": 88, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 06:15 on Wed 18 Apr to 04:00 on Thu 19 Apr.", "fact": "2018-04-17T22:15:20Z → 2018-04-18T19:59:58Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:44–20:12 on the 17th, 18:44–20:12 on the 18th.", "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 88 minutes on the 17th and 88 of 88 on the 18th.", "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 28077 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Lu’an, 2018: Wednesday 18 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-04-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-18", "confidence": "determinate" } ], "quote": "In Lu’an, Paraśurāma Jayantī 2018 falls on Wednesday 18 April. Tṛtīyā runs from 06:15 on Wed 18 Apr to 04:00 on Thu 19 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-04-19", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28164, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-04-19T03:59:58+08:00", "utc": "2018-04-18T19:59:58Z", "ms": 1524081598118.337 }, "end": { "local": "2018-04-20T01:38:07+08:00", "utc": "2018-04-19T17:38:07Z", "ms": 1524159487259.8992 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-19T03:59:58+08:00", "utc": "2018-04-18T19:59:58Z", "ms": 1524081598118.337 }, "end": { "local": "2018-04-20T01:38:07+08:00", "utc": "2018-04-19T17:38:07Z", "ms": 1524159487259.8992 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-04-19", "window": { "start": { "local": "2018-04-19T11:49:22+08:00", "utc": "2018-04-19T03:49:22Z", "ms": 1524109762452.2227 }, "end": { "local": "2018-04-19T12:37:22+08:00", "utc": "2018-04-19T04:37:22Z", "ms": 1524112642452.2227 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-04-20", "window": { "start": { "local": "2018-04-20T11:49:10+08:00", "utc": "2018-04-20T03:49:10Z", "ms": 1524196149614.8286 }, "end": { "local": "2018-04-20T12:37:10+08:00", "utc": "2018-04-20T04:37:10Z", "ms": 1524199029614.8286 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:00 on Thu 19 Apr to 01:38 on Fri 20 Apr.", "fact": "2018-04-18T19:59:58Z → 2018-04-19T17:38:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 19th, 11:49–12:37 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28164 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lu’an, 2018: Thursday 19 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-04-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-19", "confidence": "determinate" } ], "quote": "In Lu’an, Vināyaka Caturthī 2018 falls on Thursday 19 April. Caturthī runs from 04:00 on Thu 19 Apr to 01:38 on Fri 20 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-04-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36662, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2018-04-20T01:38:07+08:00", "utc": "2018-04-19T17:38:07Z", "ms": 1524159487259.8992 }, "end": { "local": "2018-04-20T23:15:52+08:00", "utc": "2018-04-20T15:15:52Z", "ms": 1524237351761.3696 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-20T01:38:07+08:00", "utc": "2018-04-19T17:38:07Z", "ms": 1524159487259.8992 }, "end": { "local": "2018-04-20T23:15:52+08:00", "utc": "2018-04-20T15:15:52Z", "ms": 1524237351761.3696 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-04-20", "window": { "start": { "local": "2018-04-20T11:49:10+08:00", "utc": "2018-04-20T03:49:10Z", "ms": 1524196149614.8286 }, "end": { "local": "2018-04-20T12:37:10+08:00", "utc": "2018-04-20T04:37:10Z", "ms": 1524199029614.8286 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-04-21", "window": { "start": { "local": "2018-04-21T11:48:57+08:00", "utc": "2018-04-21T03:48:57Z", "ms": 1524282537178.212 }, "end": { "local": "2018-04-21T12:36:57+08:00", "utc": "2018-04-21T04:36:57Z", "ms": 1524285417178.212 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 01:38 on Fri 20 Apr to 23:16 on Fri 20 Apr.", "fact": "2018-04-19T17:38:07Z → 2018-04-20T15:15:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 20th, 11:49–12:37 on the 21st.", "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 20th and 0 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 36662 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Lu’an, 2018: Friday 20 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shankara-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sankara jayanti." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-20", "confidence": "determinate" } ], "quote": "In Lu’an, Śaṅkara Jayantī 2018 falls on Friday 20 April. Pañcamī runs from 01:38 on Fri 20 Apr to 23:16 on Fri 20 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22237, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2018-04-21T20:57:52+08:00", "utc": "2018-04-21T12:57:52Z", "ms": 1524315472092.0146 }, "end": { "local": "2018-04-22T18:47:22+08:00", "utc": "2018-04-22T10:47:22Z", "ms": 1524394042025.2275 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-21T20:57:52+08:00", "utc": "2018-04-21T12:57:52Z", "ms": 1524315472092.0146 }, "end": { "local": "2018-04-22T18:47:22+08:00", "utc": "2018-04-22T10:47:22Z", "ms": 1524394042025.2275 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-04-21", "window": { "start": { "local": "2018-04-21T11:48:57+08:00", "utc": "2018-04-21T03:48:57Z", "ms": 1524282537178.212 }, "end": { "local": "2018-04-21T12:36:57+08:00", "utc": "2018-04-21T04:36:57Z", "ms": 1524285417178.212 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-04-22", "window": { "start": { "local": "2018-04-22T11:48:45+08:00", "utc": "2018-04-22T03:48:45Z", "ms": 1524368925152.8108 }, "end": { "local": "2018-04-22T12:36:45+08:00", "utc": "2018-04-22T04:36:45Z", "ms": 1524371805152.8108 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 20:58 on Sat 21 Apr to 18:47 on Sun 22 Apr.", "fact": "2018-04-21T12:57:52Z → 2018-04-22T10:47:22Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 21st, 11:49–12:37 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 22237 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Lu’an, 2018: Sunday 22 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gangotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-04-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-22", "confidence": "determinate" } ], "quote": "In Lu’an, Gaṅgotpatti (Ganga Saptami) 2018 falls on Sunday 22 April. Saptamī runs from 20:58 on Sat 21 Apr to 18:47 on Sun 22 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-04-26", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22559, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-04-25T13:16:46+08:00", "utc": "2018-04-25T05:16:46Z", "ms": 1524633405949.3176 }, "end": { "local": "2018-04-26T11:50:07+08:00", "utc": "2018-04-26T03:50:07Z", "ms": 1524714606619.169 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-25T13:16:46+08:00", "utc": "2018-04-25T05:16:46Z", "ms": 1524633405949.3176 }, "end": { "local": "2018-04-26T11:50:07+08:00", "utc": "2018-04-26T03:50:07Z", "ms": 1524714606619.169 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-04-25", "window": { "start": { "local": "2018-04-25T05:35:10+08:00", "utc": "2018-04-24T21:35:10Z", "ms": 1524605710319.426 }, "end": { "local": "2018-04-25T05:35:10+08:00", "utc": "2018-04-24T21:35:10Z", "ms": 1524605710319.426 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-04-26", "window": { "start": { "local": "2018-04-26T05:34:08+08:00", "utc": "2018-04-25T21:34:08Z", "ms": 1524692048106.2122 }, "end": { "local": "2018-04-26T05:34:08+08:00", "utc": "2018-04-25T21:34:08Z", "ms": 1524692048106.2122 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 13:17 on Wed 25 Apr to 11:50 on Thu 26 Apr.", "fact": "2018-04-25T05:16:46Z → 2018-04-26T03:50:07Z" }, { "step": "kaala", "text": "Sunrise is at 05:35 on the 25th and 05:34 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 25th and is on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22559 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Lu’an, 2018: Thursday 26 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": "2018-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-26", "confidence": "determinate" } ], "quote": "In Lu’an, Mohinī Ekādaśī 2018 falls on Thursday 26 April. Ekādaśī runs from 13:17 on Wed 25 Apr to 11:50 on Thu 26 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-04-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-26", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 125, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2018-04-26T11:50:07+08:00", "utc": "2018-04-26T03:50:07Z", "ms": 1524714606619.169 }, "end": { "local": "2018-04-27T10:37:42+08:00", "utc": "2018-04-27T02:37:42Z", "ms": 1524796662078.6052 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-26T11:50:07+08:00", "utc": "2018-04-26T03:50:07Z", "ms": 1524714606619.169 }, "end": { "local": "2018-04-27T10:37:42+08:00", "utc": "2018-04-27T02:37:42Z", "ms": 1524796662078.6052 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-04-26", "window": { "start": { "local": "2018-04-26T11:48:01+08:00", "utc": "2018-04-26T03:48:01Z", "ms": 1524714481397.128 }, "end": { "local": "2018-04-26T12:36:01+08:00", "utc": "2018-04-26T04:36:01Z", "ms": 1524717361397.128 } }, "covered_min": 46, "window_min": 48, "qualifies": true }, { "local_date": "2018-04-27", "window": { "start": { "local": "2018-04-27T11:47:52+08:00", "utc": "2018-04-27T03:47:52Z", "ms": 1524800871608.3857 }, "end": { "local": "2018-04-27T12:35:52+08:00", "utc": "2018-04-27T04:35:52Z", "ms": 1524803751608.3857 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 11:50 on Thu 26 Apr to 10:38 on Fri 27 Apr.", "fact": "2018-04-26T03:50:07Z → 2018-04-27T02:37:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 26th, 11:48–12:36 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 46 of 48 minutes on the 26th and 0 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 125 s < 300 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Lu’an, 2018: Thursday 26 April.", "fact": "confidence: boundary (margin)" } ], "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": "2018-04-26", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-26", "confidence": "determinate" } ], "quote": "In Lu’an, Paraśurāma Dvādaśī 2018 falls on Thursday 26 April. Dvādaśī runs from 11:50 on Thu 26 Apr to 10:38 on Fri 27 Apr and covers 46 of 48 minutes of madhyāhna that midday. It is 2 min 05 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-26", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 125, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2018-04-26T11:50:07+08:00", "utc": "2018-04-26T03:50:07Z", "ms": 1524714606619.169 }, "end": { "local": "2018-04-27T10:37:42+08:00", "utc": "2018-04-27T02:37:42Z", "ms": 1524796662078.6052 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-26T11:50:07+08:00", "utc": "2018-04-26T03:50:07Z", "ms": 1524714606619.169 }, "end": { "local": "2018-04-27T10:37:42+08:00", "utc": "2018-04-27T02:37:42Z", "ms": 1524796662078.6052 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-04-26", "window": { "start": { "local": "2018-04-26T11:48:01+08:00", "utc": "2018-04-26T03:48:01Z", "ms": 1524714481397.128 }, "end": { "local": "2018-04-26T12:36:01+08:00", "utc": "2018-04-26T04:36:01Z", "ms": 1524717361397.128 } }, "covered_min": 46, "window_min": 48, "qualifies": true }, { "local_date": "2018-04-27", "window": { "start": { "local": "2018-04-27T11:47:52+08:00", "utc": "2018-04-27T03:47:52Z", "ms": 1524800871608.3857 }, "end": { "local": "2018-04-27T12:35:52+08:00", "utc": "2018-04-27T04:35:52Z", "ms": 1524803751608.3857 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 11:50 on Thu 26 Apr to 10:38 on Fri 27 Apr.", "fact": "2018-04-26T03:50:07Z → 2018-04-27T02:37:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 26th, 11:48–12:36 on the 27th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 46 of 48 minutes on the 26th and 0 of 48 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 125 s < 300 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Lu’an, 2018: Thursday 26 April.", "fact": "confidence: boundary (margin)" } ], "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": "2018-04-26", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-26", "confidence": "determinate" } ], "quote": "In Lu’an, Rukmiṇī Dvādaśī 2018 falls on Thursday 26 April. Dvādaśī runs from 11:50 on Thu 26 Apr to 10:38 on Fri 27 Apr and covers 46 of 48 minutes of madhyāhna that midday. It is 2 min 05 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/pradosha-vrata?on=2018-04-27", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29574, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-04-27T10:37:42+08:00", "utc": "2018-04-27T02:37:42Z", "ms": 1524796662078.6052 }, "end": { "local": "2018-04-28T09:42:20+08:00", "utc": "2018-04-28T01:42:20Z", "ms": 1524879739788.754 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-27T10:37:42+08:00", "utc": "2018-04-27T02:37:42Z", "ms": 1524796662078.6052 }, "end": { "local": "2018-04-28T09:42:20+08:00", "utc": "2018-04-28T01:42:20Z", "ms": 1524879739788.754 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-04-27", "window": { "start": { "local": "2018-04-27T18:50:36+08:00", "utc": "2018-04-27T10:50:36Z", "ms": 1524826236437.3647 }, "end": { "local": "2018-04-27T20:16:08+08:00", "utc": "2018-04-27T12:16:08Z", "ms": 1524831368428.0266 } }, "covered_min": 86, "window_min": 86, "qualifies": true }, { "local_date": "2018-04-28", "window": { "start": { "local": "2018-04-28T18:51:18+08:00", "utc": "2018-04-28T10:51:18Z", "ms": 1524912678245.1213 }, "end": { "local": "2018-04-28T20:16:37+08:00", "utc": "2018-04-28T12:16:37Z", "ms": 1524917796732.202 } }, "covered_min": 0, "window_min": 85, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 10:38 on Fri 27 Apr to 09:42 on Sat 28 Apr.", "fact": "2018-04-27T02:37:42Z → 2018-04-28T01:42:20Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:51–20:16 on the 27th, 18:51–20:17 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 86 of 86 minutes on the 27th and 0 of 85 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 29574 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lu’an, 2018: Friday 27 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": "2018-04-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-27", "confidence": "determinate" } ], "quote": "In Lu’an, Śukla Pradoṣa Vrata 2018 falls on Friday 27 April. Trayodaśī runs from 10:38 on Fri 27 Apr to 09:42 on Sat 28 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-04-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32938, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-04-28T09:42:20+08:00", "utc": "2018-04-28T01:42:20Z", "ms": 1524879739788.754 }, "end": { "local": "2018-04-29T09:07:43+08:00", "utc": "2018-04-29T01:07:43Z", "ms": 1524964063447.1272 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-28T09:42:20+08:00", "utc": "2018-04-28T01:42:20Z", "ms": 1524879739788.754 }, "end": { "local": "2018-04-29T09:07:43+08:00", "utc": "2018-04-29T01:07:43Z", "ms": 1524964063447.1272 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-04-28", "window": { "start": { "local": "2018-04-28T18:51:18+08:00", "utc": "2018-04-28T10:51:18Z", "ms": 1524912678245.1213 }, "end": { "local": "2018-04-28T20:16:37+08:00", "utc": "2018-04-28T12:16:37Z", "ms": 1524917796732.202 } }, "covered_min": 85, "window_min": 85, "qualifies": true }, { "local_date": "2018-04-29", "window": { "start": { "local": "2018-04-29T18:52:00+08:00", "utc": "2018-04-29T10:52:00Z", "ms": 1524999120109.174 }, "end": { "local": "2018-04-29T20:17:05+08:00", "utc": "2018-04-29T12:17:05Z", "ms": 1525004225214.6343 } }, "covered_min": 0, "window_min": 85, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:42 on Sat 28 Apr to 09:08 on Sun 29 Apr.", "fact": "2018-04-28T01:42:20Z → 2018-04-29T01:07:43Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:51–20:17 on the 28th, 18:52–20:17 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 85 of 85 minutes on the 28th and 0 of 85 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32938 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Lu’an, 2018: Saturday 28 April.", "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": "2018-04-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-28", "confidence": "determinate" } ], "quote": "In Lu’an, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 2018 falls on Saturday 28 April. Caturdaśī runs from 09:42 on Sat 28 Apr to 09:08 on Sun 29 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9590, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-04-29T09:07:43+08:00", "utc": "2018-04-29T01:07:43Z", "ms": 1524964063447.1272 }, "end": { "local": "2018-04-30T08:58:11+08:00", "utc": "2018-04-30T00:58:11Z", "ms": 1525049891091.6833 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-29T09:07:43+08:00", "utc": "2018-04-29T01:07:43Z", "ms": 1524964063447.1272 }, "end": { "local": "2018-04-30T08:58:11+08:00", "utc": "2018-04-30T00:58:11Z", "ms": 1525049891091.6833 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-04-29", "window": { "start": { "local": "2018-04-29T11:47:34+08:00", "utc": "2018-04-29T03:47:34Z", "ms": 1524973653503.6997 }, "end": { "local": "2018-04-29T12:35:34+08:00", "utc": "2018-04-29T04:35:34Z", "ms": 1524976533503.6997 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-04-30", "window": { "start": { "local": "2018-04-30T11:47:25+08:00", "utc": "2018-04-30T03:47:25Z", "ms": 1525060045213.3223 }, "end": { "local": "2018-04-30T12:35:25+08:00", "utc": "2018-04-30T04:35:25Z", "ms": 1525062925213.3223 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:08 on Sun 29 Apr to 08:58 on Mon 30 Apr.", "fact": "2018-04-29T01:07:43Z → 2018-04-30T00:58:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 29th, 11:47–12:35 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9590 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Lu’an, 2018: Sunday 29 April.", "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": "2018-04-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-29", "confidence": "determinate" } ], "quote": "In Lu’an, Buddha Pūrṇimā 2018 falls on Sunday 29 April. Pūrṇimā runs from 09:08 on Sun 29 Apr to 08:58 on Mon 30 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-04-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9590, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-04-29T09:07:43+08:00", "utc": "2018-04-29T01:07:43Z", "ms": 1524964063447.1272 }, "end": { "local": "2018-04-30T08:58:11+08:00", "utc": "2018-04-30T00:58:11Z", "ms": 1525049891091.6833 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "2018-04-29T09:07:43+08:00", "utc": "2018-04-29T01:07:43Z", "ms": 1524964063447.1272 }, "end": { "local": "2018-04-30T08:58:11+08:00", "utc": "2018-04-30T00:58:11Z", "ms": 1525049891091.6833 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-04-29", "window": { "start": { "local": "2018-04-29T11:47:34+08:00", "utc": "2018-04-29T03:47:34Z", "ms": 1524973653503.6997 }, "end": { "local": "2018-04-29T12:35:34+08:00", "utc": "2018-04-29T04:35:34Z", "ms": 1524976533503.6997 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-04-30", "window": { "start": { "local": "2018-04-30T11:47:25+08:00", "utc": "2018-04-30T03:47:25Z", "ms": 1525060045213.3223 }, "end": { "local": "2018-04-30T12:35:25+08:00", "utc": "2018-04-30T04:35:25Z", "ms": 1525062925213.3223 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 09:08 on Sun 29 Apr to 08:58 on Mon 30 Apr.", "fact": "2018-04-29T01:07:43Z → 2018-04-30T00:58:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 29th, 11:47–12:35 on the 30th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9590 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Lu’an, 2018: Sunday 29 April.", "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": "2018-04-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-04-29", "confidence": "determinate" } ], "quote": "In Lu’an, Sampat Gaurī Vrata 2018 falls on Sunday 29 April. Pūrṇimā runs from 09:08 on Sun 29 Apr to 08:58 on Mon 30 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/sankashta-chaturthi?on=2018-05-03", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-05-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33294, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-05-03T11:35:28+08:00", "utc": "2018-05-03T03:35:28Z", "ms": 1525318527916.3647 }, "end": { "local": "2018-05-04T13:31:45+08:00", "utc": "2018-05-04T05:31:45Z", "ms": 1525411905219.4832 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-05-03T11:35:28+08:00", "utc": "2018-05-03T03:35:28Z", "ms": 1525318527916.3647 }, "end": { "local": "2018-05-04T13:31:45+08:00", "utc": "2018-05-04T05:31:45Z", "ms": 1525411905219.4832 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-05-03", "window": { "start": { "local": "2018-05-03T21:55:29+08:00", "utc": "2018-05-03T13:55:29Z", "ms": 1525355729465.3066 }, "end": { "local": "2018-05-03T21:55:29+08:00", "utc": "2018-05-03T13:55:29Z", "ms": 1525355729465.3066 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-05-04", "window": { "start": { "local": "2018-05-04T22:46:39+08:00", "utc": "2018-05-04T14:46:39Z", "ms": 1525445198798.5583 }, "end": { "local": "2018-05-04T22:46:39+08:00", "utc": "2018-05-04T14:46:39Z", "ms": 1525445198798.5583 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:35 on Thu 3 May to 13:32 on Fri 4 May.", "fact": "2018-05-03T03:35:28Z → 2018-05-04T05:31:45Z" }, { "step": "kaala", "text": "Moonrise is at 21:55 on the 3rd and 22:47 on the 4th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 3rd and is not on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33294 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lu’an, 2018: Thursday 3 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": "2018-05-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-05-03", "confidence": "determinate" } ], "quote": "In Lu’an, Saṅkaṣṭa Caturthī 2018 falls on Thursday 3 May. Caturthī runs from 11:35 on Thu 3 May to 13:32 on Fri 4 May and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/sankashta-chaturthi?on=2018-05-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/ekadashi?on=2018-05-11", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-05-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11276, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-05-11T01:58:25+08:00", "utc": "2018-05-10T17:58:25Z", "ms": 1525975104732.321 }, "end": { "local": "2018-05-12T02:11:56+08:00", "utc": "2018-05-11T18:11:56Z", "ms": 1526062316038.8489 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-05-11T01:58:25+08:00", "utc": "2018-05-10T17:58:25Z", "ms": 1525975104732.321 }, "end": { "local": "2018-05-12T02:11:56+08:00", "utc": "2018-05-11T18:11:56Z", "ms": 1526062316038.8489 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-05-11", "window": { "start": { "local": "2018-05-11T05:20:37+08:00", "utc": "2018-05-10T21:20:37Z", "ms": 1525987236535.55 }, "end": { "local": "2018-05-11T05:20:37+08:00", "utc": "2018-05-10T21:20:37Z", "ms": 1525987236535.55 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-05-12", "window": { "start": { "local": "2018-05-12T05:19:52+08:00", "utc": "2018-05-11T21:19:52Z", "ms": 1526073591682.529 }, "end": { "local": "2018-05-12T05:19:52+08:00", "utc": "2018-05-11T21:19:52Z", "ms": 1526073591682.529 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:58 on Fri 11 May to 02:12 on Sat 12 May.", "fact": "2018-05-10T17:58:25Z → 2018-05-11T18:11:56Z" }, { "step": "kaala", "text": "Sunrise is at 05:21 on the 11th and 05:20 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 11276 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Lu’an, 2018: Friday 11 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": "2018-05-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-05-11", "confidence": "determinate" } ], "quote": "In Lu’an, Aparā Ekādaśī 2018 falls on Friday 11 May. Ekādaśī runs from 01:58 on Fri 11 May to 02:12 on Sat 12 May and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-05-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-05-13", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-05-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13925, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-05-13T01:36:39+08:00", "utc": "2018-05-12T17:36:39Z", "ms": 1526146599072.2808 }, "end": { "local": "2018-05-14T00:16:06+08:00", "utc": "2018-05-13T16:16:06Z", "ms": 1526228165893.2778 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-05-13T01:36:39+08:00", "utc": "2018-05-12T17:36:39Z", "ms": 1526146599072.2808 }, "end": { "local": "2018-05-14T00:16:06+08:00", "utc": "2018-05-13T16:16:06Z", "ms": 1526228165893.2778 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-05-12", "window": { "start": { "local": "2018-05-12T19:01:06+08:00", "utc": "2018-05-12T11:01:06Z", "ms": 1526122866138.0222 }, "end": { "local": "2018-05-12T20:23:30+08:00", "utc": "2018-05-12T12:23:30Z", "ms": 1526127810400.8987 } }, "covered_min": 0, "window_min": 82, "qualifies": false }, { "local_date": "2018-05-13", "window": { "start": { "local": "2018-05-13T19:01:48+08:00", "utc": "2018-05-13T11:01:48Z", "ms": 1526209307808.1965 }, "end": { "local": "2018-05-13T20:24:01+08:00", "utc": "2018-05-13T12:24:01Z", "ms": 1526214240878.2517 } }, "covered_min": 82, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:37 on Sun 13 May to 00:16 on Mon 14 May.", "fact": "2018-05-12T17:36:39Z → 2018-05-13T16:16:06Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:01–20:24 on the 12th, 19:02–20:24 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 82 minutes on the 12th and 82 of 82 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 13925 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lu’an, 2018: Sunday 13 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": "2018-05-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-05-13", "confidence": "determinate" } ], "quote": "In Lu’an, Kṛṣṇa Pradoṣa Vrata 2018 falls on Sunday 13 May. Trayodaśī runs from 01:37 on Sun 13 May to 00:16 on Mon 14 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-05-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/shivaratri?on=2018-05-13", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-05-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1081, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-05-14T00:16:06+08:00", "utc": "2018-05-13T16:16:06Z", "ms": 1526228165893.2778 }, "end": { "local": "2018-05-14T22:16:56+08:00", "utc": "2018-05-14T14:16:56Z", "ms": 1526307416468.5112 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-05-14T00:16:06+08:00", "utc": "2018-05-13T16:16:06Z", "ms": 1526228165893.2778 }, "end": { "local": "2018-05-14T22:16:56+08:00", "utc": "2018-05-14T14:16:56Z", "ms": 1526307416468.5112 } }, "kaala": "nishita", "days": [ { "local_date": "2018-05-13", "window": { "start": { "local": "2018-05-13T23:46:07+08:00", "utc": "2018-05-13T15:46:07Z", "ms": 1526226366820.9038 }, "end": { "local": "2018-05-14T00:34:07+08:00", "utc": "2018-05-13T16:34:07Z", "ms": 1526229246820.9038 } }, "covered_min": 18, "window_min": 48, "qualifies": true }, { "local_date": "2018-05-14", "window": { "start": { "local": "2018-05-14T23:46:07+08:00", "utc": "2018-05-14T15:46:07Z", "ms": 1526312767100.6223 }, "end": { "local": "2018-05-15T00:34:07+08:00", "utc": "2018-05-14T16:34:07Z", "ms": 1526315647100.6223 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 00:16 on Mon 14 May to 22:17 on Mon 14 May.", "fact": "2018-05-13T16:16:06Z → 2018-05-14T14:16:56Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:46–00:34 on the 13th, 23:46–00:34 on the 14th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 18 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1081 s" }, { "step": "ruling", "text": "Śivarātri, Lu’an, 2018: Sunday 13 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": "2018-05-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-05-13", "confidence": "determinate" } ], "quote": "In Lu’an, Śivarātri 2018 falls on Sunday 13 May. Caturdaśī runs from 00:16 on Mon 14 May to 22:17 on Mon 14 May and covers 18 of 48 minutes of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/shivaratri?on=2018-05-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-05-18", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-05-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3106, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-05-18T10:54:46+08:00", "utc": "2018-05-18T02:54:46Z", "ms": 1526612085731.9487 }, "end": { "local": "2018-05-19T07:58:10+08:00", "utc": "2018-05-18T23:58:10Z", "ms": 1526687890487.199 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-05-18T10:54:46+08:00", "utc": "2018-05-18T02:54:46Z", "ms": 1526612085731.9487 }, "end": { "local": "2018-05-19T07:58:10+08:00", "utc": "2018-05-18T23:58:10Z", "ms": 1526687890487.199 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-05-18", "window": { "start": { "local": "2018-05-18T11:46:32+08:00", "utc": "2018-05-18T03:46:32Z", "ms": 1526615191686.0894 }, "end": { "local": "2018-05-18T12:34:32+08:00", "utc": "2018-05-18T04:34:32Z", "ms": 1526618071686.0894 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-05-19", "window": { "start": { "local": "2018-05-19T11:46:34+08:00", "utc": "2018-05-19T03:46:34Z", "ms": 1526701594068.6025 }, "end": { "local": "2018-05-19T12:34:34+08:00", "utc": "2018-05-19T04:34:34Z", "ms": 1526704474068.6025 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 10:55 on Fri 18 May to 07:58 on Sat 19 May.", "fact": "2018-05-18T02:54:46Z → 2018-05-18T23:58:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 18th, 11:47–12:35 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3106 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lu’an, 2018: Friday 18 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": "2018-05-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-05-18", "confidence": "determinate" } ], "quote": "In Lu’an, Vināyaka Caturthī 2018 falls on Friday 18 May. Caturthī runs from 10:55 on Fri 18 May to 07:58 on Sat 19 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-05-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/ekadashi?on=2018-05-25", "festival": "ekadashi", "name": "Śukla Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-05-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30224, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-05-24T20:48:27+08:00", "utc": "2018-05-24T12:48:27Z", "ms": 1527166106521.2537 }, "end": { "local": "2018-05-25T20:17:38+08:00", "utc": "2018-05-25T12:17:38Z", "ms": 1527250658156.223 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-05-24T20:48:27+08:00", "utc": "2018-05-24T12:48:27Z", "ms": 1527166106521.2537 }, "end": { "local": "2018-05-25T20:17:38+08:00", "utc": "2018-05-25T12:17:38Z", "ms": 1527250658156.223 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-05-25", "window": { "start": { "local": "2018-05-25T05:12:10+08:00", "utc": "2018-05-24T21:12:10Z", "ms": 1527196330168.5266 }, "end": { "local": "2018-05-25T05:12:10+08:00", "utc": "2018-05-24T21:12:10Z", "ms": 1527196330168.5266 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-05-26", "window": { "start": { "local": "2018-05-26T05:11:44+08:00", "utc": "2018-05-25T21:11:44Z", "ms": 1527282704458.8738 }, "end": { "local": "2018-05-26T05:11:44+08:00", "utc": "2018-05-25T21:11:44Z", "ms": 1527282704458.8738 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:48 on Thu 24 May to 20:18 on Fri 25 May.", "fact": "2018-05-24T12:48:27Z → 2018-05-25T12:17:38Z" }, { "step": "kaala", "text": "Sunrise is at 05:12 on the 25th and 05:12 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 30224 s" }, { "step": "ruling", "text": "Śukla Ekādaśī, Lu’an, 2018: Friday 25 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": "2018-05-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-05-25", "confidence": "determinate" } ], "quote": "In Lu’an, Śukla Ekādaśī 2018 falls on Friday 25 May. Ekādaśī runs from 20:48 on Thu 24 May to 20:18 on Fri 25 May and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-05-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-05-27", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-05-27", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 185, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-05-26T20:10:36+08:00", "utc": "2018-05-26T12:10:36Z", "ms": 1527336636271.299 }, "end": { "local": "2018-05-27T20:27:57+08:00", "utc": "2018-05-27T12:27:57Z", "ms": 1527424077088.1523 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-05-26T20:10:36+08:00", "utc": "2018-05-26T12:10:36Z", "ms": 1527336636271.299 }, "end": { "local": "2018-05-27T20:27:57+08:00", "utc": "2018-05-27T12:27:57Z", "ms": 1527424077088.1523 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-05-26", "window": { "start": { "local": "2018-05-26T19:10:25+08:00", "utc": "2018-05-26T11:10:25Z", "ms": 1527333025333.1755 }, "end": { "local": "2018-05-26T20:30:33+08:00", "utc": "2018-05-26T12:30:33Z", "ms": 1527337832649.6794 } }, "covered_min": 20, "window_min": 80, "qualifies": true }, { "local_date": "2018-05-27", "window": { "start": { "local": "2018-05-27T19:11:02+08:00", "utc": "2018-05-27T11:11:02Z", "ms": 1527419462239.0325 }, "end": { "local": "2018-05-27T20:31:02+08:00", "utc": "2018-05-27T12:31:02Z", "ms": 1527424261596.8472 } }, "covered_min": 77, "window_min": 80, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:11 on Sat 26 May to 20:28 on Sun 27 May.", "fact": "2018-05-26T12:10:36Z → 2018-05-27T12:27:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:10–20:31 on the 26th, 19:11–20:31 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 20 of 80 minutes on the 26th and 77 of 80 on the 27th.", "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 185 s < 300 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lu’an, 2018: Sunday 27 May.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-05-27", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-05-27", "confidence": "boundary" } ], "quote": "In Lu’an, Śukla Pradoṣa Vrata 2018 falls on Sunday 27 May. Trayodaśī runs from 20:11 on Sat 26 May to 20:28 on Sun 27 May and covers 77 of 80 minutes of pradoṣa that evening. It also reaches the previous evening for 20 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 3 min 05 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-05-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/sankashta-chaturthi?on=2018-06-02", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-06-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24303, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-06-02T04:14:47+08:00", "utc": "2018-06-01T20:14:47Z", "ms": 1527884086632.2168 }, "end": { "local": "2018-06-03T06:47:43+08:00", "utc": "2018-06-02T22:47:43Z", "ms": 1527979663328.832 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-06-02T04:14:47+08:00", "utc": "2018-06-01T20:14:47Z", "ms": 1527884086632.2168 }, "end": { "local": "2018-06-03T06:47:43+08:00", "utc": "2018-06-02T22:47:43Z", "ms": 1527979663328.832 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-06-01", "window": { "start": { "local": "2018-06-01T21:29:43+08:00", "utc": "2018-06-01T13:29:43Z", "ms": 1527859783289.3203 }, "end": { "local": "2018-06-01T21:29:43+08:00", "utc": "2018-06-01T13:29:43Z", "ms": 1527859783289.3203 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-06-02", "window": { "start": { "local": "2018-06-02T22:15:37+08:00", "utc": "2018-06-02T14:15:37Z", "ms": 1527948937468.939 }, "end": { "local": "2018-06-02T22:15:37+08:00", "utc": "2018-06-02T14:15:37Z", "ms": 1527948937468.939 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:15 on Sat 2 Jun to 06:48 on Sun 3 Jun.", "fact": "2018-06-01T20:14:47Z → 2018-06-02T22:47:43Z" }, { "step": "kaala", "text": "Moonrise is at 21:30 on the 1st and 22:16 on the 2nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 1st and is on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24303 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lu’an, 2018: Saturday 2 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": "2018-06-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-06-02", "confidence": "determinate" } ], "quote": "In Lu’an, Saṅkaṣṭa Caturthī 2018 falls on Saturday 2 June. Caturthī runs from 04:15 on Sat 2 Jun to 06:48 on Sun 3 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/sankashta-chaturthi?on=2018-06-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/ekadashi?on=2018-06-10", "festival": "ekadashi", "name": "Kṛṣṇa Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-06-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33381, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-06-09T15:29:06+08:00", "utc": "2018-06-09T07:29:06Z", "ms": 1528529346079.7083 }, "end": { "local": "2018-06-10T14:24:38+08:00", "utc": "2018-06-10T06:24:38Z", "ms": 1528611878464.843 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-06-09T15:29:06+08:00", "utc": "2018-06-09T07:29:06Z", "ms": 1528529346079.7083 }, "end": { "local": "2018-06-10T14:24:38+08:00", "utc": "2018-06-10T06:24:38Z", "ms": 1528611878464.843 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-06-09", "window": { "start": { "local": "2018-06-09T05:08:21+08:00", "utc": "2018-06-08T21:08:21Z", "ms": 1528492100525.356 }, "end": { "local": "2018-06-09T05:08:21+08:00", "utc": "2018-06-08T21:08:21Z", "ms": 1528492100525.356 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-06-10", "window": { "start": { "local": "2018-06-10T05:08:17+08:00", "utc": "2018-06-09T21:08:17Z", "ms": 1528578497172.9478 }, "end": { "local": "2018-06-10T05:08:17+08:00", "utc": "2018-06-09T21:08:17Z", "ms": 1528578497172.9478 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 15:29 on Sat 9 Jun to 14:25 on Sun 10 Jun.", "fact": "2018-06-09T07:29:06Z → 2018-06-10T06:24:38Z" }, { "step": "kaala", "text": "Sunrise is at 05:08 on the 9th and 05:08 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 33381 s" }, { "step": "ruling", "text": "Kṛṣṇa Ekādaśī, Lu’an, 2018: Sunday 10 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": "2018-06-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-06-10", "confidence": "determinate" } ], "quote": "In Lu’an, Kṛṣṇa Ekādaśī 2018 falls on Sunday 10 June. Ekādaśī runs from 15:29 on Sat 9 Jun to 14:25 on Sun 10 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-06-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-06-11", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-06-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24290, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-06-11T12:34:03+08:00", "utc": "2018-06-11T04:34:03Z", "ms": 1528691642564.8875 }, "end": { "local": "2018-06-12T10:04:15+08:00", "utc": "2018-06-12T02:04:15Z", "ms": 1528769054661.7236 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-06-11T12:34:03+08:00", "utc": "2018-06-11T04:34:03Z", "ms": 1528691642564.8875 }, "end": { "local": "2018-06-12T10:04:15+08:00", "utc": "2018-06-12T02:04:15Z", "ms": 1528769054661.7236 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-06-11", "window": { "start": { "local": "2018-06-11T19:18:53+08:00", "utc": "2018-06-11T11:18:53Z", "ms": 1528715932720.1685 }, "end": { "local": "2018-06-11T20:37:28+08:00", "utc": "2018-06-11T12:37:28Z", "ms": 1528720647672.1208 } }, "covered_min": 79, "window_min": 79, "qualifies": true }, { "local_date": "2018-06-12", "window": { "start": { "local": "2018-06-12T19:19:17+08:00", "utc": "2018-06-12T11:19:17Z", "ms": 1528802357128.2214 }, "end": { "local": "2018-06-12T20:37:49+08:00", "utc": "2018-06-12T12:37:49Z", "ms": 1528807068960.3076 } }, "covered_min": 0, "window_min": 79, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:34 on Mon 11 Jun to 10:04 on Tue 12 Jun.", "fact": "2018-06-11T04:34:03Z → 2018-06-12T02:04:15Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:19–20:37 on the 11th, 19:19–20:38 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 79 of 79 minutes on the 11th and 0 of 79 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 24290 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lu’an, 2018: Monday 11 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": "2018-06-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-06-11", "confidence": "determinate" } ], "quote": "In Lu’an, Kṛṣṇa Pradoṣa Vrata 2018 falls on Monday 11 June. Trayodaśī runs from 12:34 on Mon 11 Jun to 10:04 on Tue 12 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-06-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/shivaratri?on=2018-06-12", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-06-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23176, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-06-12T10:04:15+08:00", "utc": "2018-06-12T02:04:15Z", "ms": 1528769054661.7236 }, "end": { "local": "2018-06-13T07:04:03+08:00", "utc": "2018-06-12T23:04:03Z", "ms": 1528844642944.9158 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": true, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-06-12T10:04:15+08:00", "utc": "2018-06-12T02:04:15Z", "ms": 1528769054661.7236 }, "end": { "local": "2018-06-13T07:04:03+08:00", "utc": "2018-06-12T23:04:03Z", "ms": 1528844642944.9158 } }, "kaala": "nishita", "days": [ { "local_date": "2018-06-11", "window": { "start": { "local": "2018-06-11T23:49:34+08:00", "utc": "2018-06-11T15:49:34Z", "ms": 1528732173789.99 }, "end": { "local": "2018-06-12T00:37:34+08:00", "utc": "2018-06-11T16:37:34Z", "ms": 1528735053789.99 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-06-12", "window": { "start": { "local": "2018-06-12T23:49:46+08:00", "utc": "2018-06-12T15:49:46Z", "ms": 1528818586498.545 }, "end": { "local": "2018-06-13T00:37:46+08:00", "utc": "2018-06-12T16:37:46Z", "ms": 1528821466498.545 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:04 on Tue 12 Jun to 07:04 on Wed 13 Jun.", "fact": "2018-06-12T02:04:15Z → 2018-06-12T23:04:03Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:50–00:38 on the 11th, 23:50–00:38 on the 12th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23176 s" }, { "step": "ruling", "text": "Śivarātri, Lu’an, 2018: Tuesday 12 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": "2018-06-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-06-12", "confidence": "determinate" } ], "quote": "In Lu’an, Śivarātri 2018 falls on Tuesday 12 June. Caturdaśī runs from 10:04 on Tue 12 Jun to 07:04 on Wed 13 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/shivaratri?on=2018-06-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-06-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16648, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2018-06-15T20:39:44+08:00", "utc": "2018-06-15T12:39:44Z", "ms": 1529066384343.3464 }, "end": { "local": "2018-06-16T17:16:03+08:00", "utc": "2018-06-16T09:16:03Z", "ms": 1529140563234.0725 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-06-15T20:39:44+08:00", "utc": "2018-06-15T12:39:44Z", "ms": 1529066384343.3464 }, "end": { "local": "2018-06-16T17:16:03+08:00", "utc": "2018-06-16T09:16:03Z", "ms": 1529140563234.0725 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-06-15", "window": { "start": { "local": "2018-06-15T11:50:23+08:00", "utc": "2018-06-15T03:50:23Z", "ms": 1529034622987.636 }, "end": { "local": "2018-06-15T12:38:23+08:00", "utc": "2018-06-15T04:38:23Z", "ms": 1529037502987.636 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-06-16", "window": { "start": { "local": "2018-06-16T11:50:36+08:00", "utc": "2018-06-16T03:50:36Z", "ms": 1529121035566.1572 }, "end": { "local": "2018-06-16T12:38:36+08:00", "utc": "2018-06-16T04:38:36Z", "ms": 1529123915566.1572 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 20:40 on Fri 15 Jun to 17:16 on Sat 16 Jun.", "fact": "2018-06-15T12:39:44Z → 2018-06-16T09:16:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 15th, 11:51–12:39 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 16648 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Lu’an, 2018: Saturday 16 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rambha-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Rambha trtiya (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-06-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-06-16", "confidence": "determinate" } ], "quote": "In Lu’an, Rambhā Tṛtīyā 2018 falls on Saturday 16 June. Tṛtīyā runs from 20:40 on Fri 15 Jun to 17:16 on Sat 16 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-06-17", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-06-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5412, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-06-16T17:16:03+08:00", "utc": "2018-06-16T09:16:03Z", "ms": 1529140563234.0725 }, "end": { "local": "2018-06-17T14:09:00+08:00", "utc": "2018-06-17T06:09:00Z", "ms": 1529215739864.1277 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-06-16T17:16:03+08:00", "utc": "2018-06-16T09:16:03Z", "ms": 1529140563234.0725 }, "end": { "local": "2018-06-17T14:09:00+08:00", "utc": "2018-06-17T06:09:00Z", "ms": 1529215739864.1277 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-06-16", "window": { "start": { "local": "2018-06-16T11:50:36+08:00", "utc": "2018-06-16T03:50:36Z", "ms": 1529121035566.1572 }, "end": { "local": "2018-06-16T12:38:36+08:00", "utc": "2018-06-16T04:38:36Z", "ms": 1529123915566.1572 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-06-17", "window": { "start": { "local": "2018-06-17T11:50:48+08:00", "utc": "2018-06-17T03:50:48Z", "ms": 1529207448220.6987 }, "end": { "local": "2018-06-17T12:38:48+08:00", "utc": "2018-06-17T04:38:48Z", "ms": 1529210328220.6987 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 17:16 on Sat 16 Jun to 14:09 on Sun 17 Jun.", "fact": "2018-06-16T09:16:03Z → 2018-06-17T06:09:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 16th, 11:51–12:39 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5412 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lu’an, 2018: Sunday 17 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": "2018-06-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-06-17", "confidence": "determinate" } ], "quote": "In Lu’an, Vināyaka Caturthī 2018 falls on Sunday 17 June. Caturthī runs from 17:16 on Sat 16 Jun to 14:09 on Sun 17 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-06-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-06-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1532, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2018-06-18T11:25:29+08:00", "utc": "2018-06-18T03:25:29Z", "ms": 1529292329309.5022 }, "end": { "local": "2018-06-19T09:10:55+08:00", "utc": "2018-06-19T01:10:55Z", "ms": 1529370654756.836 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-06-18T11:25:29+08:00", "utc": "2018-06-18T03:25:29Z", "ms": 1529292329309.5022 }, "end": { "local": "2018-06-19T09:10:55+08:00", "utc": "2018-06-19T01:10:55Z", "ms": 1529370654756.836 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-06-18", "window": { "start": { "local": "2018-06-18T11:51:01+08:00", "utc": "2018-06-18T03:51:01Z", "ms": 1529293860923.9148 }, "end": { "local": "2018-06-18T12:39:01+08:00", "utc": "2018-06-18T04:39:01Z", "ms": 1529296740923.9148 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-06-19", "window": { "start": { "local": "2018-06-19T11:51:14+08:00", "utc": "2018-06-19T03:51:14Z", "ms": 1529380273649.946 }, "end": { "local": "2018-06-19T12:39:14+08:00", "utc": "2018-06-19T04:39:14Z", "ms": 1529383153649.946 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 11:25 on Mon 18 Jun to 09:11 on Tue 19 Jun.", "fact": "2018-06-18T03:25:29Z → 2018-06-19T01:10:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 18th, 11:51–12:39 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1532 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Lu’an, 2018: Monday 18 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": "2018-06-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-06-18", "confidence": "determinate" } ], "quote": "In Lu’an, Araṇya Gaurī Vrata 2018 falls on Monday 18 June. Ṣaṣṭhī runs from 11:25 on Mon 18 Jun to 09:11 on Tue 19 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-06-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1532, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2018-06-18T11:25:29+08:00", "utc": "2018-06-18T03:25:29Z", "ms": 1529292329309.5022 }, "end": { "local": "2018-06-19T09:10:55+08:00", "utc": "2018-06-19T01:10:55Z", "ms": 1529370654756.836 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-06-18T11:25:29+08:00", "utc": "2018-06-18T03:25:29Z", "ms": 1529292329309.5022 }, "end": { "local": "2018-06-19T09:10:55+08:00", "utc": "2018-06-19T01:10:55Z", "ms": 1529370654756.836 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-06-18", "window": { "start": { "local": "2018-06-18T11:51:01+08:00", "utc": "2018-06-18T03:51:01Z", "ms": 1529293860923.9148 }, "end": { "local": "2018-06-18T12:39:01+08:00", "utc": "2018-06-18T04:39:01Z", "ms": 1529296740923.9148 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-06-19", "window": { "start": { "local": "2018-06-19T11:51:14+08:00", "utc": "2018-06-19T03:51:14Z", "ms": 1529380273649.946 }, "end": { "local": "2018-06-19T12:39:14+08:00", "utc": "2018-06-19T04:39:14Z", "ms": 1529383153649.946 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 11:25 on Mon 18 Jun to 09:11 on Tue 19 Jun.", "fact": "2018-06-18T03:25:29Z → 2018-06-19T01:10:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 18th, 11:51–12:39 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 1532 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Lu’an, 2018: Monday 18 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": "2018-06-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-06-18", "confidence": "determinate" } ], "quote": "In Lu’an, Skanda Ṣaṣṭhī (Jyaiṣṭha) 2018 falls on Monday 18 June. Ṣaṣṭhī runs from 11:25 on Mon 18 Jun to 09:11 on Tue 19 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-06-24", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-06-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2417, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-06-23T05:49:57+08:00", "utc": "2018-06-22T21:49:57Z", "ms": 1529704197153.8113 }, "end": { "local": "2018-06-24T06:22:41+08:00", "utc": "2018-06-23T22:22:41Z", "ms": 1529792561216.21 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-06-23T05:49:57+08:00", "utc": "2018-06-22T21:49:57Z", "ms": 1529704197153.8113 }, "end": { "local": "2018-06-24T06:22:41+08:00", "utc": "2018-06-23T22:22:41Z", "ms": 1529792561216.21 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-06-23", "window": { "start": { "local": "2018-06-23T05:09:40+08:00", "utc": "2018-06-22T21:09:40Z", "ms": 1529701780421.4937 }, "end": { "local": "2018-06-23T05:09:40+08:00", "utc": "2018-06-22T21:09:40Z", "ms": 1529701780421.4937 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-06-24", "window": { "start": { "local": "2018-06-24T05:09:56+08:00", "utc": "2018-06-23T21:09:56Z", "ms": 1529788195831.9202 }, "end": { "local": "2018-06-24T05:09:56+08:00", "utc": "2018-06-23T21:09:56Z", "ms": 1529788195831.9202 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 05:50 on Sat 23 Jun to 06:23 on Sun 24 Jun.", "fact": "2018-06-22T21:49:57Z → 2018-06-23T22:22:41Z" }, { "step": "kaala", "text": "Sunrise is at 05:10 on the 23rd and 05:10 on the 24th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 23rd and is on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2417 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Lu’an, 2018: Sunday 24 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": "2018-06-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-06-24", "confidence": "determinate" } ], "quote": "In Lu’an, Nirjalā Ekādaśī 2018 falls on Sunday 24 June. Ekādaśī runs from 05:50 on Sat 23 Jun to 06:23 on Sun 24 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-06-24", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-06-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16082, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2018-06-24T06:22:41+08:00", "utc": "2018-06-23T22:22:41Z", "ms": 1529792561216.21 }, "end": { "local": "2018-06-25T07:24:27+08:00", "utc": "2018-06-24T23:24:27Z", "ms": 1529882666970.2927 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-06-24T06:22:41+08:00", "utc": "2018-06-23T22:22:41Z", "ms": 1529792561216.21 }, "end": { "local": "2018-06-25T07:24:27+08:00", "utc": "2018-06-24T23:24:27Z", "ms": 1529882666970.2927 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-06-24", "window": { "start": { "local": "2018-06-24T11:52:17+08:00", "utc": "2018-06-24T03:52:17Z", "ms": 1529812336801.5513 }, "end": { "local": "2018-06-24T12:40:17+08:00", "utc": "2018-06-24T04:40:17Z", "ms": 1529815216801.5513 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-06-25", "window": { "start": { "local": "2018-06-25T11:52:29+08:00", "utc": "2018-06-25T03:52:29Z", "ms": 1529898749185.1582 }, "end": { "local": "2018-06-25T12:40:29+08:00", "utc": "2018-06-25T04:40:29Z", "ms": 1529901629185.1582 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 06:23 on Sun 24 Jun to 07:24 on Mon 25 Jun.", "fact": "2018-06-23T22:22:41Z → 2018-06-24T23:24:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 24th, 11:52–12:40 on the 25th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 16082 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Lu’an, 2018: Sunday 24 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": "2018-06-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-06-24", "confidence": "determinate" } ], "quote": "In Lu’an, Śrī Rāma Dvādaśī 2018 falls on Sunday 24 June. Dvādaśī runs from 06:23 on Sun 24 Jun to 07:24 on Mon 25 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/pradosha-vrata?on=2018-06-25", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-06-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37835, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-06-25T07:24:27+08:00", "utc": "2018-06-24T23:24:27Z", "ms": 1529882666970.2927 }, "end": { "local": "2018-06-26T08:52:18+08:00", "utc": "2018-06-26T00:52:18Z", "ms": 1529974338168.3127 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-06-25T07:24:27+08:00", "utc": "2018-06-24T23:24:27Z", "ms": 1529882666970.2927 }, "end": { "local": "2018-06-26T08:52:18+08:00", "utc": "2018-06-26T00:52:18Z", "ms": 1529974338168.3127 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-06-25", "window": { "start": { "local": "2018-06-25T19:22:46+08:00", "utc": "2018-06-25T11:22:46Z", "ms": 1529925765955.3643 }, "end": { "local": "2018-06-25T20:41:08+08:00", "utc": "2018-06-25T12:41:08Z", "ms": 1529930467847.4766 } }, "covered_min": 78, "window_min": 78, "qualifies": true }, { "local_date": "2018-06-26", "window": { "start": { "local": "2018-06-26T19:22:53+08:00", "utc": "2018-06-26T11:22:53Z", "ms": 1530012172731.829 }, "end": { "local": "2018-06-26T20:41:16+08:00", "utc": "2018-06-26T12:41:16Z", "ms": 1530016876234.3516 } }, "covered_min": 0, "window_min": 78, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:24 on Mon 25 Jun to 08:52 on Tue 26 Jun.", "fact": "2018-06-24T23:24:27Z → 2018-06-26T00:52:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:23–20:41 on the 25th, 19:23–20:41 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 78 of 78 minutes on the 25th and 0 of 78 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 37835 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lu’an, 2018: Monday 25 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": "2018-06-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-06-25", "confidence": "determinate" } ], "quote": "In Lu’an, Śukla Pradoṣa Vrata 2018 falls on Monday 25 June. Trayodaśī runs from 07:24 on Mon 25 Jun to 08:52 on Tue 26 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-06-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-06-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23404, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-06-27T10:43:02+08:00", "utc": "2018-06-27T02:43:02Z", "ms": 1530067382433.2666 }, "end": { "local": "2018-06-28T12:52:58+08:00", "utc": "2018-06-28T04:52:58Z", "ms": 1530161578377.593 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "2018-06-27T10:43:02+08:00", "utc": "2018-06-27T02:43:02Z", "ms": 1530067382433.2666 }, "end": { "local": "2018-06-28T12:52:58+08:00", "utc": "2018-06-28T04:52:58Z", "ms": 1530161578377.593 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-06-27", "window": { "start": { "local": "2018-06-27T19:22:58+08:00", "utc": "2018-06-27T11:22:58Z", "ms": 1530098578086.4448 }, "end": { "local": "2018-06-27T20:41:24+08:00", "utc": "2018-06-27T12:41:24Z", "ms": 1530103283535.3313 } }, "covered_min": 78, "window_min": 78, "qualifies": true }, { "local_date": "2018-06-28", "window": { "start": { "local": "2018-06-28T19:23:02+08:00", "utc": "2018-06-28T11:23:02Z", "ms": 1530184982006.2341 }, "end": { "local": "2018-06-28T20:41:30+08:00", "utc": "2018-06-28T12:41:30Z", "ms": 1530189689735.6975 } }, "covered_min": 0, "window_min": 78, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:43 on Wed 27 Jun to 12:53 on Thu 28 Jun.", "fact": "2018-06-27T02:43:02Z → 2018-06-28T04:52:58Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:23–20:41 on the 27th, 19:23–20:41 on the 28th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 78 of 78 minutes on the 27th and 0 of 78 on the 28th.", "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 23404 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Lu’an, 2018: Wednesday 27 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": "2018-06-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-06-27", "confidence": "determinate" } ], "quote": "In Lu’an, Vaṭa Sāvitrī Vrata 2018 falls on Wednesday 27 June. Pūrṇimā runs from 10:43 on Wed 27 Jun to 12:53 on Thu 28 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/sankashta-chaturthi?on=2018-07-01", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-01", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2228, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-07-01T20:24:57+08:00", "utc": "2018-07-01T12:24:57Z", "ms": 1530447896941.8135 }, "end": { "local": "2018-07-02T22:50:56+08:00", "utc": "2018-07-02T14:50:56Z", "ms": 1530543055888.0564 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-01T20:24:57+08:00", "utc": "2018-07-01T12:24:57Z", "ms": 1530447896941.8135 }, "end": { "local": "2018-07-02T22:50:56+08:00", "utc": "2018-07-02T14:50:56Z", "ms": 1530543055888.0564 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-07-01", "window": { "start": { "local": "2018-07-01T21:36:43+08:00", "utc": "2018-07-01T13:36:43Z", "ms": 1530452202791.0894 }, "end": { "local": "2018-07-01T21:36:43+08:00", "utc": "2018-07-01T13:36:43Z", "ms": 1530452202791.0894 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-07-02", "window": { "start": { "local": "2018-07-02T22:13:48+08:00", "utc": "2018-07-02T14:13:48Z", "ms": 1530540828243.9827 }, "end": { "local": "2018-07-02T22:13:48+08:00", "utc": "2018-07-02T14:13:48Z", "ms": 1530540828243.9827 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:25 on Sun 1 Jul to 22:51 on Mon 2 Jul.", "fact": "2018-07-01T12:24:57Z → 2018-07-02T14:50:56Z" }, { "step": "kaala", "text": "Moonrise is at 21:37 on the 1st and 22:14 on the 2nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 1st and is on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both moonrises qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 2228 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lu’an, 2018: Sunday 1 July.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-07-01", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-01", "confidence": "boundary" } ], "quote": "In Lu’an, Saṅkaṣṭa Caturthī 2018 falls on Sunday 1 July. Caturthī runs from 20:25 on Sun 1 Jul to 22:51 on Mon 2 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/sankashta-chaturthi?on=2018-07-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/ekadashi?on=2018-07-09", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11698, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-07-09T02:00:55+08:00", "utc": "2018-07-08T18:00:55Z", "ms": 1531072855498.0898 }, "end": { "local": "2018-07-09T23:57:19+08:00", "utc": "2018-07-09T15:57:19Z", "ms": 1531151838736.3308 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-09T02:00:55+08:00", "utc": "2018-07-08T18:00:55Z", "ms": 1531072855498.0898 }, "end": { "local": "2018-07-09T23:57:19+08:00", "utc": "2018-07-09T15:57:19Z", "ms": 1531151838736.3308 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-07-09", "window": { "start": { "local": "2018-07-09T05:15:53+08:00", "utc": "2018-07-08T21:15:53Z", "ms": 1531084553005.7056 }, "end": { "local": "2018-07-09T05:15:53+08:00", "utc": "2018-07-08T21:15:53Z", "ms": 1531084553005.7056 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-07-10", "window": { "start": { "local": "2018-07-10T05:16:24+08:00", "utc": "2018-07-09T21:16:24Z", "ms": 1531170983922.07 }, "end": { "local": "2018-07-10T05:16:24+08:00", "utc": "2018-07-09T21:16:24Z", "ms": 1531170983922.07 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:01 on Mon 9 Jul to 23:57 on Mon 9 Jul.", "fact": "2018-07-08T18:00:55Z → 2018-07-09T15:57:19Z" }, { "step": "kaala", "text": "Sunrise is at 05:16 on the 9th and 05:16 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 11698 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Lu’an, 2018: Monday 9 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": "2018-07-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-09", "confidence": "determinate" } ], "quote": "In Lu’an, Yoginī Ekādaśī 2018 falls on Monday 9 July. Ekādaśī runs from 02:01 on Mon 9 Jul to 23:57 on Mon 9 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-07-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-07-10", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-10", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 2074, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-07-10T21:15:48+08:00", "utc": "2018-07-10T13:15:48Z", "ms": 1531228547507.056 }, "end": { "local": "2018-07-11T18:04:15+08:00", "utc": "2018-07-11T10:04:15Z", "ms": 1531303455323.706 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-10T21:15:48+08:00", "utc": "2018-07-10T13:15:48Z", "ms": 1531228547507.056 }, "end": { "local": "2018-07-11T18:04:15+08:00", "utc": "2018-07-11T10:04:15Z", "ms": 1531303455323.706 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-07-10", "window": { "start": { "local": "2018-07-10T19:21:54+08:00", "utc": "2018-07-10T11:21:54Z", "ms": 1531221713770.0984 }, "end": { "local": "2018-07-10T20:41:14+08:00", "utc": "2018-07-10T12:41:14Z", "ms": 1531226474006.6235 } }, "covered_min": 0, "window_min": 79, "qualifies": false }, { "local_date": "2018-07-11", "window": { "start": { "local": "2018-07-11T19:21:38+08:00", "utc": "2018-07-11T11:21:38Z", "ms": 1531308098296.0203 }, "end": { "local": "2018-07-11T20:41:05+08:00", "utc": "2018-07-11T12:41:05Z", "ms": 1531312864901.08 } }, "covered_min": 0, "window_min": 79, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:16 on Tue 10 Jul to 18:04 on Wed 11 Jul.", "fact": "2018-07-10T13:15:48Z → 2018-07-11T10:04:15Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:22–20:41 on the 10th, 19:22–20:41 on the 11th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 79 minutes on the 10th and 0 of 79 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither evening qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 2074 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lu’an, 2018: Tuesday 10 July.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-07-10", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-10", "confidence": "determinate" } ], "quote": "In Lu’an, Kṛṣṇa Pradoṣa Vrata 2018 falls on Tuesday 10 July. Trayodaśī runs from 21:16 on Tue 10 Jul to 18:04 on Wed 11 Jul, and reaches pradoṣa on neither day.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-07-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/shivaratri?on=2018-07-11", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21078, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-07-11T18:04:15+08:00", "utc": "2018-07-11T10:04:15Z", "ms": 1531303455323.706 }, "end": { "local": "2018-07-12T14:31:44+08:00", "utc": "2018-07-12T06:31:44Z", "ms": 1531377104262.4673 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-11T18:04:15+08:00", "utc": "2018-07-11T10:04:15Z", "ms": 1531303455323.706 }, "end": { "local": "2018-07-12T14:31:44+08:00", "utc": "2018-07-12T06:31:44Z", "ms": 1531377104262.4673 } }, "kaala": "nishita", "days": [ { "local_date": "2018-07-11", "window": { "start": { "local": "2018-07-11T23:55:33+08:00", "utc": "2018-07-11T15:55:33Z", "ms": 1531324533064.9949 }, "end": { "local": "2018-07-12T00:43:33+08:00", "utc": "2018-07-11T16:43:33Z", "ms": 1531327413064.9949 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-07-12", "window": { "start": { "local": "2018-07-12T23:55:41+08:00", "utc": "2018-07-12T15:55:41Z", "ms": 1531410941025.675 }, "end": { "local": "2018-07-13T00:43:41+08:00", "utc": "2018-07-12T16:43:41Z", "ms": 1531413821025.675 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 18:04 on Wed 11 Jul to 14:32 on Thu 12 Jul.", "fact": "2018-07-11T10:04:15Z → 2018-07-12T06:31:44Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:56–00:44 on the 11th, 23:56–00:44 on the 12th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21078 s" }, { "step": "ruling", "text": "Śivarātri, Lu’an, 2018: Wednesday 11 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": "2018-07-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-11", "confidence": "determinate" } ], "quote": "In Lu’an, Śivarātri 2018 falls on Wednesday 11 July. Caturdaśī runs from 18:04 on Wed 11 Jul to 14:32 on Thu 12 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/shivaratri?on=2018-07-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17591, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2018-07-14T07:02:27+08:00", "utc": "2018-07-13T23:02:27Z", "ms": 1531522947471.4346 }, "end": { "local": "2018-07-15T03:25:09+08:00", "utc": "2018-07-14T19:25:09Z", "ms": 1531596309112.2686 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-14T07:02:27+08:00", "utc": "2018-07-13T23:02:27Z", "ms": 1531522947471.4346 }, "end": { "local": "2018-07-15T03:25:09+08:00", "utc": "2018-07-14T19:25:09Z", "ms": 1531596309112.2686 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-07-14", "window": { "start": { "local": "2018-07-14T11:55:38+08:00", "utc": "2018-07-14T03:55:38Z", "ms": 1531540538490.7563 }, "end": { "local": "2018-07-14T12:43:38+08:00", "utc": "2018-07-14T04:43:38Z", "ms": 1531543418490.7563 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-07-15", "window": { "start": { "local": "2018-07-15T11:55:45+08:00", "utc": "2018-07-15T03:55:45Z", "ms": 1531626944728.0247 }, "end": { "local": "2018-07-15T12:43:45+08:00", "utc": "2018-07-15T04:43:45Z", "ms": 1531629824728.0247 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 07:02 on Sat 14 Jul to 03:25 on Sun 15 Jul.", "fact": "2018-07-13T23:02:27Z → 2018-07-14T19:25:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 14th, 11:56–12:44 on the 15th.", "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 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 17591 s" }, { "step": "ruling", "text": "Rathayātrā, Lu’an, 2018: Saturday 14 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rathayatra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Rathayatra (paraviddha, special when combined with naksatra 'Pusya')" } ], "not_evaluated": "The row calls the day special with Puṣya nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-07-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-14", "confidence": "determinate" } ], "quote": "In Lu’an, Rathayātrā 2018 falls on Saturday 14 July. Dvitīyā runs from 07:02 on Sat 14 Jul to 03:25 on Sun 15 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-07-16", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30419, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-07-16T00:05:08+08:00", "utc": "2018-07-15T16:05:08Z", "ms": 1531670708407.4592 }, "end": { "local": "2018-07-16T21:10:50+08:00", "utc": "2018-07-16T13:10:50Z", "ms": 1531746649680.862 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-16T00:05:08+08:00", "utc": "2018-07-15T16:05:08Z", "ms": 1531670708407.4592 }, "end": { "local": "2018-07-16T21:10:50+08:00", "utc": "2018-07-16T13:10:50Z", "ms": 1531746649680.862 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-07-15", "window": { "start": { "local": "2018-07-15T11:55:45+08:00", "utc": "2018-07-15T03:55:45Z", "ms": 1531626944728.0247 }, "end": { "local": "2018-07-15T12:43:45+08:00", "utc": "2018-07-15T04:43:45Z", "ms": 1531629824728.0247 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-07-16", "window": { "start": { "local": "2018-07-16T11:55:50+08:00", "utc": "2018-07-16T03:55:50Z", "ms": 1531713350456.4868 }, "end": { "local": "2018-07-16T12:43:50+08:00", "utc": "2018-07-16T04:43:50Z", "ms": 1531716230456.4868 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:05 on Mon 16 Jul to 21:11 on Mon 16 Jul.", "fact": "2018-07-15T16:05:08Z → 2018-07-16T13:10:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 15th, 11:56–12:44 on the 16th.", "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 15th and 48 of 48 on the 16th.", "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 30419 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lu’an, 2018: Monday 16 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": "2018-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-16", "confidence": "determinate" } ], "quote": "In Lu’an, Vināyaka Caturthī 2018 falls on Monday 16 July. Caturthī runs from 00:05 on Mon 16 Jul to 21:11 on Mon 16 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-07-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21932, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2018-07-16T21:10:50+08:00", "utc": "2018-07-16T13:10:50Z", "ms": 1531746649680.862 }, "end": { "local": "2018-07-17T18:49:28+08:00", "utc": "2018-07-17T10:49:28Z", "ms": 1531824567727.6724 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-16T21:10:50+08:00", "utc": "2018-07-16T13:10:50Z", "ms": 1531746649680.862 }, "end": { "local": "2018-07-17T18:49:28+08:00", "utc": "2018-07-17T10:49:28Z", "ms": 1531824567727.6724 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-07-16", "window": { "start": { "local": "2018-07-16T11:55:50+08:00", "utc": "2018-07-16T03:55:50Z", "ms": 1531713350456.4868 }, "end": { "local": "2018-07-16T12:43:50+08:00", "utc": "2018-07-16T04:43:50Z", "ms": 1531716230456.4868 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-07-17", "window": { "start": { "local": "2018-07-17T11:55:56+08:00", "utc": "2018-07-17T03:55:56Z", "ms": 1531799755659.5352 }, "end": { "local": "2018-07-17T12:43:56+08:00", "utc": "2018-07-17T04:43:56Z", "ms": 1531802635659.5352 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 21:11 on Mon 16 Jul to 18:49 on Tue 17 Jul.", "fact": "2018-07-16T13:10:50Z → 2018-07-17T10:49:28Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 16th, 11:56–12:44 on the 17th.", "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 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21932 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Lu’an, 2018: Tuesday 17 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": "2018-07-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-17", "confidence": "determinate" } ], "quote": "In Lu’an, Skanda Pañcamī 2018 falls on Tuesday 17 July. Pañcamī runs from 21:11 on Mon 16 Jul to 18:49 on Tue 17 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12126, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2018-07-18T17:06:42+08:00", "utc": "2018-07-18T09:06:42Z", "ms": 1531904802010.8564 }, "end": { "local": "2018-07-19T16:06:10+08:00", "utc": "2018-07-19T08:06:10Z", "ms": 1531987570193.0781 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-18T17:06:42+08:00", "utc": "2018-07-18T09:06:42Z", "ms": 1531904802010.8564 }, "end": { "local": "2018-07-19T16:06:10+08:00", "utc": "2018-07-19T08:06:10Z", "ms": 1531987570193.0781 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-07-18", "window": { "start": { "local": "2018-07-18T11:56:00+08:00", "utc": "2018-07-18T03:56:00Z", "ms": 1531886160322.8306 }, "end": { "local": "2018-07-18T12:44:00+08:00", "utc": "2018-07-18T04:44:00Z", "ms": 1531889040322.8306 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-07-19", "window": { "start": { "local": "2018-07-19T11:56:04+08:00", "utc": "2018-07-19T03:56:04Z", "ms": 1531972564434.2065 }, "end": { "local": "2018-07-19T12:44:04+08:00", "utc": "2018-07-19T04:44:04Z", "ms": 1531975444434.2065 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 17:07 on Wed 18 Jul to 16:06 on Thu 19 Jul.", "fact": "2018-07-18T09:06:42Z → 2018-07-19T08:06:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 18th, 11:56–12:44 on the 19th.", "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 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 12126 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Lu’an, 2018: Thursday 19 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": "2018-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-19", "confidence": "determinate" } ], "quote": "In Lu’an, Vivasvat Saptamī 2018 falls on Thursday 19 July. Saptamī runs from 17:07 on Wed 18 Jul to 16:06 on Thu 19 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-07-23", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37840, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-07-22T17:17:42+08:00", "utc": "2018-07-22T09:17:42Z", "ms": 1532251061609.5364 }, "end": { "local": "2018-07-23T18:53:54+08:00", "utc": "2018-07-23T10:53:54Z", "ms": 1532343233843.25 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-22T17:17:42+08:00", "utc": "2018-07-22T09:17:42Z", "ms": 1532251061609.5364 }, "end": { "local": "2018-07-23T18:53:54+08:00", "utc": "2018-07-23T10:53:54Z", "ms": 1532343233843.25 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-07-23", "window": { "start": { "local": "2018-07-23T05:23:56+08:00", "utc": "2018-07-22T21:23:56Z", "ms": 1532294636467.9893 }, "end": { "local": "2018-07-23T05:23:56+08:00", "utc": "2018-07-22T21:23:56Z", "ms": 1532294636467.9893 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-07-24", "window": { "start": { "local": "2018-07-24T05:24:34+08:00", "utc": "2018-07-23T21:24:34Z", "ms": 1532381073988.321 }, "end": { "local": "2018-07-24T05:24:34+08:00", "utc": "2018-07-23T21:24:34Z", "ms": 1532381073988.321 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:18 on Sun 22 Jul to 18:54 on Mon 23 Jul.", "fact": "2018-07-22T09:17:42Z → 2018-07-23T10:53:54Z" }, { "step": "kaala", "text": "Sunrise is at 05:24 on the 23rd and 05:25 on the 24th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 23rd and is not on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37840 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Lu’an, 2018: Monday 23 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": "2018-07-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-23", "confidence": "determinate" } ], "quote": "In Lu’an, Hariśayanī Ekādaśī 2018 falls on Monday 23 July. Ekādaśī runs from 17:18 on Sun 22 Jul to 18:54 on Mon 23 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-07-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-07-25", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1116, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-07-24T20:55:48+08:00", "utc": "2018-07-24T12:55:48Z", "ms": 1532436948495.6292 }, "end": { "local": "2018-07-25T23:15:51+08:00", "utc": "2018-07-25T15:15:51Z", "ms": 1532531751260.3157 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-24T20:55:48+08:00", "utc": "2018-07-24T12:55:48Z", "ms": 1532436948495.6292 }, "end": { "local": "2018-07-25T23:15:51+08:00", "utc": "2018-07-25T15:15:51Z", "ms": 1532531751260.3157 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-07-24", "window": { "start": { "local": "2018-07-24T19:15:59+08:00", "utc": "2018-07-24T11:15:59Z", "ms": 1532430958830.3274 }, "end": { "local": "2018-07-24T20:37:13+08:00", "utc": "2018-07-24T12:37:13Z", "ms": 1532435832553.436 } }, "covered_min": 0, "window_min": 81, "qualifies": false }, { "local_date": "2018-07-25", "window": { "start": { "local": "2018-07-25T19:15:22+08:00", "utc": "2018-07-25T11:15:22Z", "ms": 1532517322340.5173 }, "end": { "local": "2018-07-25T20:36:46+08:00", "utc": "2018-07-25T12:36:46Z", "ms": 1532522205993.8647 } }, "covered_min": 81, "window_min": 81, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 20:56 on Tue 24 Jul to 23:16 on Wed 25 Jul.", "fact": "2018-07-24T12:55:48Z → 2018-07-25T15:15:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:16–20:37 on the 24th, 19:15–20:37 on the 25th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 81 minutes on the 24th and 81 of 81 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1116 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lu’an, 2018: Wednesday 25 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": "2018-07-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-25", "confidence": "boundary" } ], "quote": "In Lu’an, Śukla Pradoṣa Vrata 2018 falls on Wednesday 25 July. Trayodaśī runs from 20:56 on Tue 24 Jul to 23:16 on Wed 25 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-07-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4005, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-07-27T01:46:28+08:00", "utc": "2018-07-26T17:46:28Z", "ms": 1532627187604.4104 }, "end": { "local": "2018-07-28T04:20:21+08:00", "utc": "2018-07-27T20:20:21Z", "ms": 1532722821104.1553 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-27T01:46:28+08:00", "utc": "2018-07-26T17:46:28Z", "ms": 1532627187604.4104 }, "end": { "local": "2018-07-28T04:20:21+08:00", "utc": "2018-07-27T20:20:21Z", "ms": 1532722821104.1553 } }, "kaala": "udaya-3", "days": [ { "local_date": "2018-07-27", "window": { "start": { "local": "2018-07-27T05:26:28+08:00", "utc": "2018-07-26T21:26:28Z", "ms": 1532640387927.0676 }, "end": { "local": "2018-07-27T08:11:59+08:00", "utc": "2018-07-27T00:11:59Z", "ms": 1532650319371.9592 } }, "covered_min": 166, "window_min": 166, "qualifies": true }, { "local_date": "2018-07-28", "window": { "start": { "local": "2018-07-28T05:27:06+08:00", "utc": "2018-07-27T21:27:06Z", "ms": 1532726826291.8972 }, "end": { "local": "2018-07-28T08:12:22+08:00", "utc": "2018-07-28T00:12:22Z", "ms": 1532736741931.8315 } }, "covered_min": 0, "window_min": 165, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:46 on Fri 27 Jul to 04:20 on Sat 28 Jul.", "fact": "2018-07-26T17:46:28Z → 2018-07-27T20:20:21Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:26–08:12 on the 27th, 05:27–08:12 on the 28th.", "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 166 of 166 minutes on the 27th and 0 of 165 on the 28th.", "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 4005 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Lu’an, 2018: Friday 27 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": "2018-07-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-27", "confidence": "determinate" } ], "quote": "In Lu’an, Vyāsa Pūjā 2018 falls on Friday 27 July. Pūrṇimā runs from 01:46 on Fri 27 Jul to 04:20 on Sat 28 Jul and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27354, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-07-27T01:46:28+08:00", "utc": "2018-07-26T17:46:28Z", "ms": 1532627187604.4104 }, "end": { "local": "2018-07-28T04:20:21+08:00", "utc": "2018-07-27T20:20:21Z", "ms": 1532722821104.1553 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-27T01:46:28+08:00", "utc": "2018-07-26T17:46:28Z", "ms": 1532627187604.4104 }, "end": { "local": "2018-07-28T04:20:21+08:00", "utc": "2018-07-27T20:20:21Z", "ms": 1532722821104.1553 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-07-27", "window": { "start": { "local": "2018-07-27T11:56:17+08:00", "utc": "2018-07-27T03:56:17Z", "ms": 1532663776539.2969 }, "end": { "local": "2018-07-27T12:44:17+08:00", "utc": "2018-07-27T04:44:17Z", "ms": 1532666656539.2969 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-07-28", "window": { "start": { "local": "2018-07-28T11:56:15+08:00", "utc": "2018-07-28T03:56:15Z", "ms": 1532750175391.733 }, "end": { "local": "2018-07-28T12:44:15+08:00", "utc": "2018-07-28T04:44:15Z", "ms": 1532753055391.733 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:46 on Fri 27 Jul to 04:20 on Sat 28 Jul.", "fact": "2018-07-26T17:46:28Z → 2018-07-27T20:20:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 27th, 11:56–12:44 on the 28th.", "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 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27354 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Lu’an, 2018: Friday 27 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": "2018-07-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-27", "confidence": "determinate" } ], "quote": "In Lu’an, Guru Pūrṇimā 2018 falls on Friday 27 July. Pūrṇimā runs from 01:46 on Fri 27 Jul to 04:20 on Sat 28 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23503, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-07-27T01:46:28+08:00", "utc": "2018-07-26T17:46:28Z", "ms": 1532627187604.4104 }, "end": { "local": "2018-07-28T04:20:21+08:00", "utc": "2018-07-27T20:20:21Z", "ms": 1532722821104.1553 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-27T01:46:28+08:00", "utc": "2018-07-26T17:46:28Z", "ms": 1532627187604.4104 }, "end": { "local": "2018-07-28T04:20:21+08:00", "utc": "2018-07-27T20:20:21Z", "ms": 1532722821104.1553 } }, "kaala": "sayahna", "days": [ { "local_date": "2018-07-26", "window": { "start": { "local": "2018-07-26T16:28:58+08:00", "utc": "2018-07-26T08:28:58Z", "ms": 1532593737501.0564 }, "end": { "local": "2018-07-26T19:14:44+08:00", "utc": "2018-07-26T11:14:44Z", "ms": 1532603684441.165 } }, "covered_min": 0, "window_min": 166, "qualifies": false }, { "local_date": "2018-07-27", "window": { "start": { "local": "2018-07-27T16:28:34+08:00", "utc": "2018-07-27T08:28:34Z", "ms": 1532680113706.6343 }, "end": { "local": "2018-07-27T19:14:05+08:00", "utc": "2018-07-27T11:14:05Z", "ms": 1532690045151.526 } }, "covered_min": 166, "window_min": 166, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:46 on Fri 27 Jul to 04:20 on Sat 28 Jul.", "fact": "2018-07-26T17:46:28Z → 2018-07-27T20:20:21Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:29–19:15 on the 26th, 16:29–19:14 on the 27th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 0 of 166 minutes on the 26th and 166 of 166 on the 27th.", "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 23503 s" }, { "step": "ruling", "text": "Kokilā Vrata, Lu’an, 2018: Friday 27 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": "2018-07-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-27", "confidence": "determinate" } ], "quote": "In Lu’an, Kokilā Vrata 2018 falls on Friday 27 July. Pūrṇimā runs from 01:46 on Fri 27 Jul to 04:20 on Sat 28 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18609, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-07-27T01:46:28+08:00", "utc": "2018-07-26T17:46:28Z", "ms": 1532627187604.4104 }, "end": { "local": "2018-07-28T04:20:21+08:00", "utc": "2018-07-27T20:20:21Z", "ms": 1532722821104.1553 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "2018-07-27T01:46:28+08:00", "utc": "2018-07-26T17:46:28Z", "ms": 1532627187604.4104 }, "end": { "local": "2018-07-28T04:20:21+08:00", "utc": "2018-07-27T20:20:21Z", "ms": 1532722821104.1553 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-07-26", "window": { "start": { "local": "2018-07-26T19:14:44+08:00", "utc": "2018-07-26T11:14:44Z", "ms": 1532603684441.165 }, "end": { "local": "2018-07-26T20:36:18+08:00", "utc": "2018-07-26T12:36:18Z", "ms": 1532608578239.2854 } }, "covered_min": 0, "window_min": 82, "qualifies": false }, { "local_date": "2018-07-27", "window": { "start": { "local": "2018-07-27T19:14:05+08:00", "utc": "2018-07-27T11:14:05Z", "ms": 1532690045151.526 }, "end": { "local": "2018-07-27T20:35:49+08:00", "utc": "2018-07-27T12:35:49Z", "ms": 1532694949303.5754 } }, "covered_min": 82, "window_min": 82, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 01:46 on Fri 27 Jul to 04:20 on Sat 28 Jul.", "fact": "2018-07-26T17:46:28Z → 2018-07-27T20:20:21Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:15–20:36 on the 26th, 19:14–20:36 on the 27th.", "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 82 minutes on the 26th and 82 of 82 on the 27th.", "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 18609 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Lu’an, 2018: Friday 27 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": "2018-07-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-27", "confidence": "determinate" } ], "quote": "In Lu’an, Śiva Śayanotsava 2018 falls on Friday 27 July. Pūrṇimā runs from 01:46 on Fri 27 Jul to 04:20 on Sat 28 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40440, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2018-07-29T06:50:36+08:00", "utc": "2018-07-28T22:50:36Z", "ms": 1532818236014.6 }, "end": { "local": "2018-07-30T09:10:30+08:00", "utc": "2018-07-30T01:10:30Z", "ms": 1532913030286.5576 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2018-07-29T06:50:36+08:00", "utc": "2018-07-28T22:50:36Z", "ms": 1532818236014.6 }, "end": { "local": "2018-07-30T09:10:30+08:00", "utc": "2018-07-30T01:10:30Z", "ms": 1532913030286.5576 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-07-28", "window": { "start": { "local": "2018-07-28T19:36:36+08:00", "utc": "2018-07-28T11:36:36Z", "ms": 1532777795850.772 }, "end": { "local": "2018-07-28T19:36:36+08:00", "utc": "2018-07-28T11:36:36Z", "ms": 1532777795850.772 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-07-29", "window": { "start": { "local": "2018-07-29T20:14:46+08:00", "utc": "2018-07-29T12:14:46Z", "ms": 1532866485525.3066 }, "end": { "local": "2018-07-29T20:14:46+08:00", "utc": "2018-07-29T12:14:46Z", "ms": 1532866485525.3066 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 06:51 on Sun 29 Jul to 09:11 on Mon 30 Jul.", "fact": "2018-07-28T22:50:36Z → 2018-07-30T01:10:30Z" }, { "step": "kaala", "text": "Moonrise is at 19:37 on the 28th and 20:15 on the 29th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 28th and is on the 29th.", "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 40440 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Lu’an, 2018: Sunday 29 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": "2018-07-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-29", "confidence": "determinate" } ], "quote": "In Lu’an, Aśūnya Śayana Vrata (Āṣāḍha) 2018 falls on Sunday 29 July. Dvitīyā runs from 06:51 on Sun 29 Jul to 09:11 on Mon 30 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/sankashta-chaturthi?on=2018-07-31", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-07-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32604, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-07-31T11:13:28+08:00", "utc": "2018-07-31T03:13:28Z", "ms": 1533006808308.9995 }, "end": { "local": "2018-08-01T12:53:02+08:00", "utc": "2018-08-01T04:53:02Z", "ms": 1533099182069.5957 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2018-07-31T11:13:28+08:00", "utc": "2018-07-31T03:13:28Z", "ms": 1533006808308.9995 }, "end": { "local": "2018-08-01T12:53:02+08:00", "utc": "2018-08-01T04:53:02Z", "ms": 1533099182069.5957 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-07-31", "window": { "start": { "local": "2018-07-31T21:23:51+08:00", "utc": "2018-07-31T13:23:51Z", "ms": 1533043431428.989 }, "end": { "local": "2018-07-31T21:23:51+08:00", "utc": "2018-07-31T13:23:51Z", "ms": 1533043431428.989 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-08-01", "window": { "start": { "local": "2018-08-01T21:56:27+08:00", "utc": "2018-08-01T13:56:27Z", "ms": 1533131786543.094 }, "end": { "local": "2018-08-01T21:56:27+08:00", "utc": "2018-08-01T13:56:27Z", "ms": 1533131786543.094 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:13 on Tue 31 Jul to 12:53 on Wed 1 Aug.", "fact": "2018-07-31T03:13:28Z → 2018-08-01T04:53:02Z" }, { "step": "kaala", "text": "Moonrise is at 21:24 on the 31st and 21:56 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 31st and is not on the 1st.", "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 32604 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lu’an, 2018: Tuesday 31 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": "2018-07-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-07-31", "confidence": "determinate" } ], "quote": "In Lu’an, Saṅkaṣṭa Caturthī 2018 falls on Tuesday 31 July. Caturthī runs from 11:13 on Tue 31 Jul to 12:53 on Wed 1 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/sankashta-chaturthi?on=2018-07-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/ekadashi?on=2018-08-08", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7884, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-08-07T10:22:46+08:00", "utc": "2018-08-07T02:22:46Z", "ms": 1533608566254.9343 }, "end": { "local": "2018-08-08T07:45:39+08:00", "utc": "2018-08-07T23:45:39Z", "ms": 1533685539432.0996 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2018-08-07T10:22:46+08:00", "utc": "2018-08-07T02:22:46Z", "ms": 1533608566254.9343 }, "end": { "local": "2018-08-08T07:45:39+08:00", "utc": "2018-08-07T23:45:39Z", "ms": 1533685539432.0996 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-08-07", "window": { "start": { "local": "2018-08-07T05:33:36+08:00", "utc": "2018-08-06T21:33:36Z", "ms": 1533591215776.322 }, "end": { "local": "2018-08-07T05:33:36+08:00", "utc": "2018-08-06T21:33:36Z", "ms": 1533591215776.322 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-08-08", "window": { "start": { "local": "2018-08-08T05:34:15+08:00", "utc": "2018-08-07T21:34:15Z", "ms": 1533677654954.6719 }, "end": { "local": "2018-08-08T05:34:15+08:00", "utc": "2018-08-07T21:34:15Z", "ms": 1533677654954.6719 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:23 on Tue 7 Aug to 07:46 on Wed 8 Aug.", "fact": "2018-08-07T02:22:46Z → 2018-08-07T23:45:39Z" }, { "step": "kaala", "text": "Sunrise is at 05:34 on the 7th and 05:34 on the 8th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 7th and is on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7884 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Lu’an, 2018: Wednesday 8 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": "2018-08-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-08", "confidence": "determinate" } ], "quote": "In Lu’an, Kāmikā Ekādaśī 2018 falls on Wednesday 8 August. Ekādaśī runs from 10:23 on Tue 7 Aug to 07:46 on Wed 8 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-08-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-08-09", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17244, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-08-09T04:40:41+08:00", "utc": "2018-08-08T20:40:41Z", "ms": 1533760840773.168 }, "end": { "local": "2018-08-10T01:15:17+08:00", "utc": "2018-08-09T17:15:17Z", "ms": 1533834917285.2732 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2018-08-09T04:40:41+08:00", "utc": "2018-08-08T20:40:41Z", "ms": 1533760840773.168 }, "end": { "local": "2018-08-10T01:15:17+08:00", "utc": "2018-08-09T17:15:17Z", "ms": 1533834917285.2732 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-08-08", "window": { "start": { "local": "2018-08-08T19:04:33+08:00", "utc": "2018-08-08T11:04:33Z", "ms": 1533726272960.4578 }, "end": { "local": "2018-08-08T20:28:36+08:00", "utc": "2018-08-08T12:28:36Z", "ms": 1533731315780.669 } }, "covered_min": 0, "window_min": 84, "qualifies": false }, { "local_date": "2018-08-09", "window": { "start": { "local": "2018-08-09T19:03:38+08:00", "utc": "2018-08-09T11:03:38Z", "ms": 1533812617555.471 }, "end": { "local": "2018-08-09T20:27:53+08:00", "utc": "2018-08-09T12:27:53Z", "ms": 1533817672978.9282 } }, "covered_min": 84, "window_min": 84, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 04:41 on Thu 9 Aug to 01:15 on Fri 10 Aug.", "fact": "2018-08-08T20:40:41Z → 2018-08-09T17:15:17Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:05–20:29 on the 8th, 19:04–20:28 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 84 minutes on the 8th and 84 of 84 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 17244 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lu’an, 2018: Thursday 9 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": "2018-08-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-09", "confidence": "determinate" } ], "quote": "In Lu’an, Kṛṣṇa Pradoṣa Vrata 2018 falls on Thursday 9 August. Trayodaśī runs from 04:41 on Thu 9 Aug to 01:15 on Fri 10 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-08-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/shivaratri?on=2018-08-09", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-09", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 1902, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-08-10T01:15:17+08:00", "utc": "2018-08-09T17:15:17Z", "ms": 1533834917285.2732 }, "end": { "local": "2018-08-10T21:37:56+08:00", "utc": "2018-08-10T13:37:56Z", "ms": 1533908275865.642 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2018-08-10T01:15:17+08:00", "utc": "2018-08-09T17:15:17Z", "ms": 1533834917285.2732 }, "end": { "local": "2018-08-10T21:37:56+08:00", "utc": "2018-08-10T13:37:56Z", "ms": 1533908275865.642 } }, "kaala": "nishita", "days": [ { "local_date": "2018-08-09", "window": { "start": { "local": "2018-08-09T23:55:35+08:00", "utc": "2018-08-09T15:55:35Z", "ms": 1533830135393.436 }, "end": { "local": "2018-08-10T00:43:35+08:00", "utc": "2018-08-09T16:43:35Z", "ms": 1533833015393.436 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-08-10", "window": { "start": { "local": "2018-08-10T23:55:27+08:00", "utc": "2018-08-10T15:55:27Z", "ms": 1533916526679.1123 }, "end": { "local": "2018-08-11T00:43:27+08:00", "utc": "2018-08-10T16:43:27Z", "ms": 1533919406679.1123 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 01:15 on Fri 10 Aug to 21:38 on Fri 10 Aug.", "fact": "2018-08-09T17:15:17Z → 2018-08-10T13:37:56Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:56–00:44 on the 9th, 23:55–00:43 on the 10th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither night qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 1902 s" }, { "step": "ruling", "text": "Śivarātri, Lu’an, 2018: Thursday 9 August.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-08-09", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-09", "confidence": "boundary" } ], "quote": "In Lu’an, Śivarātri 2018 falls on Thursday 9 August. Caturdaśī runs from 01:15 on Fri 10 Aug to 21:38 on Fri 10 Aug, and reaches niśītha on neither day.", "cite": "https://ahargana.org/lu-an/festivals/2018/shivaratri?on=2018-08-09", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2860, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2018-08-13T11:06:58+08:00", "utc": "2018-08-13T03:06:58Z", "ms": 1534129618204.2227 }, "end": { "local": "2018-08-14T08:15:20+08:00", "utc": "2018-08-14T00:15:20Z", "ms": 1534205719745.8645 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2018-08-13T11:06:58+08:00", "utc": "2018-08-13T03:06:58Z", "ms": 1534129618204.2227 }, "end": { "local": "2018-08-14T08:15:20+08:00", "utc": "2018-08-14T00:15:20Z", "ms": 1534205719745.8645 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-08-13", "window": { "start": { "local": "2018-08-13T11:54:38+08:00", "utc": "2018-08-13T03:54:38Z", "ms": 1534132477720.8713 }, "end": { "local": "2018-08-13T12:42:38+08:00", "utc": "2018-08-13T04:42:38Z", "ms": 1534135357720.8713 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-08-14", "window": { "start": { "local": "2018-08-14T11:54:27+08:00", "utc": "2018-08-14T03:54:27Z", "ms": 1534218866796.7979 }, "end": { "local": "2018-08-14T12:42:27+08:00", "utc": "2018-08-14T04:42:27Z", "ms": 1534221746796.7979 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 11:07 on Mon 13 Aug to 08:15 on Tue 14 Aug.", "fact": "2018-08-13T03:06:58Z → 2018-08-14T00:15:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 13th, 11:54–12:42 on the 14th.", "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 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 2860 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Lu’an, 2018: Monday 13 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "madhusrava-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Madhusrava (Gujerat) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-08-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-13", "confidence": "determinate" } ], "quote": "In Lu’an, Madhusravā Tṛtīyā (Hariyali Teej) 2018 falls on Monday 13 August. Tṛtīyā runs from 11:07 on Mon 13 Aug to 08:15 on Tue 14 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-08-14", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13147, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-08-14T08:15:20+08:00", "utc": "2018-08-14T00:15:20Z", "ms": 1534205719745.8645 }, "end": { "local": "2018-08-15T05:57:52+08:00", "utc": "2018-08-14T21:57:52Z", "ms": 1534283872144.1572 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2018-08-14T08:15:20+08:00", "utc": "2018-08-14T00:15:20Z", "ms": 1534205719745.8645 }, "end": { "local": "2018-08-15T05:57:52+08:00", "utc": "2018-08-14T21:57:52Z", "ms": 1534283872144.1572 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-08-14", "window": { "start": { "local": "2018-08-14T11:54:27+08:00", "utc": "2018-08-14T03:54:27Z", "ms": 1534218866796.7979 }, "end": { "local": "2018-08-14T12:42:27+08:00", "utc": "2018-08-14T04:42:27Z", "ms": 1534221746796.7979 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-08-15", "window": { "start": { "local": "2018-08-15T11:54:15+08:00", "utc": "2018-08-15T03:54:15Z", "ms": 1534305255321.8577 }, "end": { "local": "2018-08-15T12:42:15+08:00", "utc": "2018-08-15T04:42:15Z", "ms": 1534308135321.8577 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:15 on Tue 14 Aug to 05:58 on Wed 15 Aug.", "fact": "2018-08-14T00:15:20Z → 2018-08-14T21:57:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 14th, 11:54–12:42 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13147 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lu’an, 2018: Tuesday 14 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-08-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-14", "confidence": "determinate" } ], "quote": "In Lu’an, Vināyaka Caturthī 2018 falls on Tuesday 14 August. Caturthī runs from 08:15 on Tue 14 Aug to 05:58 on Wed 15 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-08-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21383, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2018-08-15T05:57:52+08:00", "utc": "2018-08-14T21:57:52Z", "ms": 1534283872144.1572 }, "end": { "local": "2018-08-16T04:21:48+08:00", "utc": "2018-08-15T20:21:48Z", "ms": 1534364507531.6821 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2018-08-15T05:57:52+08:00", "utc": "2018-08-14T21:57:52Z", "ms": 1534283872144.1572 }, "end": { "local": "2018-08-16T04:21:48+08:00", "utc": "2018-08-15T20:21:48Z", "ms": 1534364507531.6821 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-08-15", "window": { "start": { "local": "2018-08-15T11:54:15+08:00", "utc": "2018-08-15T03:54:15Z", "ms": 1534305255321.8577 }, "end": { "local": "2018-08-15T12:42:15+08:00", "utc": "2018-08-15T04:42:15Z", "ms": 1534308135321.8577 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-08-16", "window": { "start": { "local": "2018-08-16T11:54:03+08:00", "utc": "2018-08-16T03:54:03Z", "ms": 1534391643302.77 }, "end": { "local": "2018-08-16T12:42:03+08:00", "utc": "2018-08-16T04:42:03Z", "ms": 1534394523302.77 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:58 on Wed 15 Aug to 04:22 on Thu 16 Aug.", "fact": "2018-08-14T21:57:52Z → 2018-08-15T20:21:48Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 15th, 11:54–12:42 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 21383 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Lu’an, 2018: Wednesday 15 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-08-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-15", "confidence": "determinate" } ], "quote": "In Lu’an, Nāga Pañcamī 2018 falls on Wednesday 15 August. Pañcamī runs from 05:58 on Wed 15 Aug to 04:22 on Thu 16 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-08-22", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7447, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-08-21T07:46:44+08:00", "utc": "2018-08-20T23:46:44Z", "ms": 1534808803761.1855 }, "end": { "local": "2018-08-22T10:10:43+08:00", "utc": "2018-08-22T02:10:43Z", "ms": 1534903843073.3782 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2018-08-21T07:46:44+08:00", "utc": "2018-08-20T23:46:44Z", "ms": 1534808803761.1855 }, "end": { "local": "2018-08-22T10:10:43+08:00", "utc": "2018-08-22T02:10:43Z", "ms": 1534903843073.3782 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-08-21", "window": { "start": { "local": "2018-08-21T05:42:37+08:00", "utc": "2018-08-20T21:42:37Z", "ms": 1534801356980.1892 }, "end": { "local": "2018-08-21T05:42:37+08:00", "utc": "2018-08-20T21:42:37Z", "ms": 1534801356980.1892 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-08-22", "window": { "start": { "local": "2018-08-22T05:43:15+08:00", "utc": "2018-08-21T21:43:15Z", "ms": 1534887794691.2617 }, "end": { "local": "2018-08-22T05:43:15+08:00", "utc": "2018-08-21T21:43:15Z", "ms": 1534887794691.2617 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:47 on Tue 21 Aug to 10:11 on Wed 22 Aug.", "fact": "2018-08-20T23:46:44Z → 2018-08-22T02:10:43Z" }, { "step": "kaala", "text": "Sunrise is at 05:43 on the 21st and 05:43 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 7447 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Lu’an, 2018: Wednesday 22 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": "2018-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-22", "confidence": "determinate" } ], "quote": "In Lu’an, Putradā Ekādaśī 2018 falls on Wednesday 22 August. Ekādaśī runs from 07:47 on Tue 21 Aug to 10:11 on Wed 22 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-08-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 314, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2018-08-22T10:10:43+08:00", "utc": "2018-08-22T02:10:43Z", "ms": 1534903843073.3782 }, "end": { "local": "2018-08-23T12:45:39+08:00", "utc": "2018-08-23T04:45:39Z", "ms": 1534999538893.1116 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2018-08-22T10:10:43+08:00", "utc": "2018-08-22T02:10:43Z", "ms": 1534903843073.3782 }, "end": { "local": "2018-08-23T12:45:39+08:00", "utc": "2018-08-23T04:45:39Z", "ms": 1534999538893.1116 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-08-22", "window": { "start": { "local": "2018-08-22T11:52:40+08:00", "utc": "2018-08-22T03:52:40Z", "ms": 1534909960328.1252 }, "end": { "local": "2018-08-22T12:40:40+08:00", "utc": "2018-08-22T04:40:40Z", "ms": 1534912840328.1252 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-08-23", "window": { "start": { "local": "2018-08-23T11:52:25+08:00", "utc": "2018-08-23T03:52:25Z", "ms": 1534996344807.9092 }, "end": { "local": "2018-08-23T12:40:25+08:00", "utc": "2018-08-23T04:40:25Z", "ms": 1534999224807.9092 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 10:11 on Wed 22 Aug to 12:46 on Thu 23 Aug.", "fact": "2018-08-22T02:10:43Z → 2018-08-23T04:45:39Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 22nd, 11:52–12:40 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 48 of 48 on the 23rd.", "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 314 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Lu’an, 2018: Wednesday 22 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": "2018-08-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-22", "confidence": "determinate" } ], "quote": "In Lu’an, Dāmodara Dvādaśī 2018 falls on Wednesday 22 August. Dvādaśī runs from 10:11 on Wed 22 Aug to 12:46 on Thu 23 Aug 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/lu-an/festivals/2018/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": "/lu-an/festivals/2018/pradosha-vrata?on=2018-08-23", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12432, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-08-23T12:45:39+08:00", "utc": "2018-08-23T04:45:39Z", "ms": 1534999538893.1116 }, "end": { "local": "2018-08-24T15:20:36+08:00", "utc": "2018-08-24T07:20:36Z", "ms": 1535095236341.8088 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2018-08-23T12:45:39+08:00", "utc": "2018-08-23T04:45:39Z", "ms": 1534999538893.1116 }, "end": { "local": "2018-08-24T15:20:36+08:00", "utc": "2018-08-24T07:20:36Z", "ms": 1535095236341.8088 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-08-23", "window": { "start": { "local": "2018-08-23T18:48:57+08:00", "utc": "2018-08-23T10:48:57Z", "ms": 1535021337358.7068 }, "end": { "local": "2018-08-23T20:16:22+08:00", "utc": "2018-08-23T12:16:22Z", "ms": 1535026581668.2637 } }, "covered_min": 87, "window_min": 87, "qualifies": true }, { "local_date": "2018-08-24", "window": { "start": { "local": "2018-08-24T18:47:48+08:00", "utc": "2018-08-24T10:47:48Z", "ms": 1535107668007.5151 }, "end": { "local": "2018-08-24T20:15:27+08:00", "utc": "2018-08-24T12:15:27Z", "ms": 1535112926535.169 } }, "covered_min": 0, "window_min": 88, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:46 on Thu 23 Aug to 15:21 on Fri 24 Aug.", "fact": "2018-08-23T04:45:39Z → 2018-08-24T07:20:36Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:49–20:16 on the 23rd, 18:48–20:15 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 87 of 87 minutes on the 23rd and 0 of 88 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 12432 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lu’an, 2018: Thursday 23 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": "2018-08-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-23", "confidence": "determinate" } ], "quote": "In Lu’an, Śukla Pradoṣa Vrata 2018 falls on Thursday 23 August. Trayodaśī runs from 12:46 on Thu 23 Aug to 15:21 on Fri 24 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-08-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4075, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-08-25T17:46:26+08:00", "utc": "2018-08-25T09:46:26Z", "ms": 1535190385809.455 }, "end": { "local": "2018-08-26T19:56:10+08:00", "utc": "2018-08-26T11:56:10Z", "ms": 1535284570466.9868 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "2018-08-26T06:53:40+08:00", "utc": "2018-08-25T22:53:40Z", "ms": 1535237619577.8662 }, "end": { "local": "2018-08-26T19:56:10+08:00", "utc": "2018-08-26T11:56:10Z", "ms": 1535284570466.9868 } }, "kaala": "day", "days": [ { "local_date": "2018-08-25", "window": { "start": { "local": "2018-08-25T05:45:07+08:00", "utc": "2018-08-24T21:45:07Z", "ms": 1535147106964.918 }, "end": { "local": "2018-08-26T05:45:44+08:00", "utc": "2018-08-25T21:45:44Z", "ms": 1535233544115.702 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "2018-08-26", "window": { "start": { "local": "2018-08-26T05:45:44+08:00", "utc": "2018-08-25T21:45:44Z", "ms": 1535233544115.702 }, "end": { "local": "2018-08-27T05:46:21+08:00", "utc": "2018-08-26T21:46:21Z", "ms": 1535319981138.789 } }, "covered_min": 783, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:46 on Sat 25 Aug to 19:56 on Sun 26 Aug. Its second half begins at 06:54 on Sun 26 Aug.", "fact": "2018-08-25T09:46:26Z → 2018-08-26T11:56:10Z · second half from 2018-08-25T22:53:40Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:45 on the 25th, and from 05:46 on the 26th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The second half of Pūrṇimā must be present during the day. It covers 0 of 1441 minutes on the 25th and 783 of 1441 on the 26th.", "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 4075 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Lu’an, 2018: Sunday 26 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": "2018-08-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-26", "confidence": "determinate" } ], "quote": "In Lu’an, Rakṣā Bandhana (Rakhi) 2018 falls on Sunday 26 August. The second half of Pūrṇimā runs from 06:54 on Sun 26 Aug to 19:56 on Sun 26 Aug and lies within that day, sunrise to sunrise.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18393, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-08-25T17:46:26+08:00", "utc": "2018-08-25T09:46:26Z", "ms": 1535190385809.455 }, "end": { "local": "2018-08-26T19:56:10+08:00", "utc": "2018-08-26T11:56:10Z", "ms": 1535284570466.9868 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "2018-08-25T17:46:26+08:00", "utc": "2018-08-25T09:46:26Z", "ms": 1535190385809.455 }, "end": { "local": "2018-08-26T19:56:10+08:00", "utc": "2018-08-26T11:56:10Z", "ms": 1535284570466.9868 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-08-25", "window": { "start": { "local": "2018-08-25T11:51:52+08:00", "utc": "2018-08-25T03:51:52Z", "ms": 1535169112452.7349 }, "end": { "local": "2018-08-25T12:39:52+08:00", "utc": "2018-08-25T04:39:52Z", "ms": 1535171992452.7349 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-08-26", "window": { "start": { "local": "2018-08-26T11:51:36+08:00", "utc": "2018-08-26T03:51:36Z", "ms": 1535255495651.4087 }, "end": { "local": "2018-08-26T12:39:36+08:00", "utc": "2018-08-26T04:39:36Z", "ms": 1535258375651.4087 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 17:46 on Sat 25 Aug to 19:56 on Sun 26 Aug.", "fact": "2018-08-25T09:46:26Z → 2018-08-26T11:56:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 25th, 11:52–12:40 on the 26th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 25th and 48 of 48 on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18393 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Lu’an, 2018: Sunday 26 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": "2018-08-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-26", "confidence": "determinate" } ], "quote": "In Lu’an, Ṛṣi Tarpaṇa 2018 falls on Sunday 26 August. Pūrṇimā runs from 17:46 on Sat 25 Aug to 19:56 on Sun 26 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8357, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2018-08-27T21:45:01+08:00", "utc": "2018-08-27T13:45:01Z", "ms": 1535377500654.6133 }, "end": { "local": "2018-08-28T23:09:47+08:00", "utc": "2018-08-28T15:09:47Z", "ms": 1535468987056.746 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-08-27T21:45:01+08:00", "utc": "2018-08-27T13:45:01Z", "ms": 1535377500654.6133 }, "end": { "local": "2018-08-28T23:09:47+08:00", "utc": "2018-08-28T15:09:47Z", "ms": 1535468987056.746 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-08-27", "window": { "start": { "local": "2018-08-27T19:25:43+08:00", "utc": "2018-08-27T11:25:43Z", "ms": 1535369143414.343 }, "end": { "local": "2018-08-27T19:25:43+08:00", "utc": "2018-08-27T11:25:43Z", "ms": 1535369143414.343 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-08-28", "window": { "start": { "local": "2018-08-28T19:58:44+08:00", "utc": "2018-08-28T11:58:44Z", "ms": 1535457523501.6714 }, "end": { "local": "2018-08-28T19:58:44+08:00", "utc": "2018-08-28T11:58:44Z", "ms": 1535457523501.6714 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 21:45 on Mon 27 Aug to 23:10 on Tue 28 Aug.", "fact": "2018-08-27T13:45:01Z → 2018-08-28T15:09:47Z" }, { "step": "kaala", "text": "Moonrise is at 19:26 on the 27th and 19:59 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 27th and is on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8357 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Lu’an, 2018: Tuesday 28 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ashunya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 2 Asunyasayana vrata (Dvitiya current at moonrise; if occurs on two successive days, it is to be observed on the second day)." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-08-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-28", "confidence": "determinate" } ], "quote": "In Lu’an, Aśūnya Śayana Vrata 2018 falls on Tuesday 28 August. Dvitīyā runs from 21:45 on Mon 27 Aug to 23:10 on Tue 28 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37846, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2018-08-28T23:09:47+08:00", "utc": "2018-08-28T15:09:47Z", "ms": 1535468987056.746 }, "end": { "local": "2018-08-30T00:08:27+08:00", "utc": "2018-08-29T16:08:27Z", "ms": 1535558906631.1692 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-08-28T23:09:47+08:00", "utc": "2018-08-28T15:09:47Z", "ms": 1535468987056.746 }, "end": { "local": "2018-08-30T00:08:27+08:00", "utc": "2018-08-29T16:08:27Z", "ms": 1535558906631.1692 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-08-28", "window": { "start": { "local": "2018-08-28T11:51:01+08:00", "utc": "2018-08-28T03:51:01Z", "ms": 1535428260889.8513 }, "end": { "local": "2018-08-28T12:39:01+08:00", "utc": "2018-08-28T04:39:01Z", "ms": 1535431140889.8513 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-08-29", "window": { "start": { "local": "2018-08-29T11:50:43+08:00", "utc": "2018-08-29T03:50:43Z", "ms": 1535514642966.5122 }, "end": { "local": "2018-08-29T12:38:43+08:00", "utc": "2018-08-29T04:38:43Z", "ms": 1535517522966.5122 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 23:10 on Tue 28 Aug to 00:08 on Thu 30 Aug.", "fact": "2018-08-28T15:09:47Z → 2018-08-29T16:08:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 28th, 11:51–12:39 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 37846 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Lu’an, 2018: Wednesday 29 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": "2018-08-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-29", "confidence": "determinate" } ], "quote": "In Lu’an, Kajjalī Tṛtīyā (Kajari Teej) 2018 falls on Wednesday 29 August. Tṛtīyā runs from 23:10 on Tue 28 Aug to 00:08 on Thu 30 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19596, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-08-30T00:08:27+08:00", "utc": "2018-08-29T16:08:27Z", "ms": 1535558906631.1692 }, "end": { "local": "2018-08-31T00:39:33+08:00", "utc": "2018-08-30T16:39:33Z", "ms": 1535647172769.437 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-08-30T00:08:27+08:00", "utc": "2018-08-29T16:08:27Z", "ms": 1535558906631.1692 }, "end": { "local": "2018-08-31T00:39:33+08:00", "utc": "2018-08-30T16:39:33Z", "ms": 1535647172769.437 } }, "kaala": "sayahna", "days": [ { "local_date": "2018-08-29", "window": { "start": { "local": "2018-08-29T16:07:00+08:00", "utc": "2018-08-29T08:07:00Z", "ms": 1535530019847.9207 }, "end": { "local": "2018-08-29T18:41:51+08:00", "utc": "2018-08-29T10:41:51Z", "ms": 1535539311102.193 } }, "covered_min": 0, "window_min": 155, "qualifies": false }, { "local_date": "2018-08-30", "window": { "start": { "local": "2018-08-30T16:06:09+08:00", "utc": "2018-08-30T08:06:09Z", "ms": 1535616368620.8938 }, "end": { "local": "2018-08-30T18:40:38+08:00", "utc": "2018-08-30T10:40:38Z", "ms": 1535625637897.063 } }, "covered_min": 154, "window_min": 154, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:08 on Thu 30 Aug to 00:40 on Fri 31 Aug.", "fact": "2018-08-29T16:08:27Z → 2018-08-30T16:39:33Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:07–18:42 on the 29th, 16:06–18:41 on the 30th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 0 of 155 minutes on the 29th and 154 of 154 on the 30th.", "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 19596 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Lu’an, 2018: Thursday 30 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": "2018-08-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-30", "confidence": "determinate" } ], "quote": "In Lu’an, Bahulā Caturthī 2018 falls on Thursday 30 August. Caturthī runs from 00:08 on Thu 30 Aug to 00:40 on Fri 31 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/sankashta-chaturthi?on=2018-08-30", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-08-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12908, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-08-30T00:08:27+08:00", "utc": "2018-08-29T16:08:27Z", "ms": 1535558906631.1692 }, "end": { "local": "2018-08-31T00:39:33+08:00", "utc": "2018-08-30T16:39:33Z", "ms": 1535647172769.437 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-08-30T00:08:27+08:00", "utc": "2018-08-29T16:08:27Z", "ms": 1535558906631.1692 }, "end": { "local": "2018-08-31T00:39:33+08:00", "utc": "2018-08-30T16:39:33Z", "ms": 1535647172769.437 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-08-29", "window": { "start": { "local": "2018-08-29T20:31:18+08:00", "utc": "2018-08-29T12:31:18Z", "ms": 1535545877594.1306 }, "end": { "local": "2018-08-29T20:31:18+08:00", "utc": "2018-08-29T12:31:18Z", "ms": 1535545877594.1306 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-08-30", "window": { "start": { "local": "2018-08-30T21:04:25+08:00", "utc": "2018-08-30T13:04:25Z", "ms": 1535634264845.9734 }, "end": { "local": "2018-08-30T21:04:25+08:00", "utc": "2018-08-30T13:04:25Z", "ms": 1535634264845.9734 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:08 on Thu 30 Aug to 00:40 on Fri 31 Aug.", "fact": "2018-08-29T16:08:27Z → 2018-08-30T16:39:33Z" }, { "step": "kaala", "text": "Moonrise is at 20:31 on the 29th and 21:04 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 29th and is on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12908 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lu’an, 2018: Thursday 30 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": "2018-08-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-08-30", "confidence": "determinate" } ], "quote": "In Lu’an, Saṅkaṣṭa Caturthī 2018 falls on Thursday 30 August. Caturthī runs from 00:08 on Thu 30 Aug to 00:40 on Fri 31 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/sankashta-chaturthi?on=2018-08-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40070, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2018-09-01T00:41:57+08:00", "utc": "2018-08-31T16:41:57Z", "ms": 1535733716910.0825 }, "end": { "local": "2018-09-02T00:14:44+08:00", "utc": "2018-09-01T16:14:44Z", "ms": 1535818484364.1775 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-01T00:41:57+08:00", "utc": "2018-08-31T16:41:57Z", "ms": 1535733716910.0825 }, "end": { "local": "2018-09-02T00:14:44+08:00", "utc": "2018-09-01T16:14:44Z", "ms": 1535818484364.1775 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-09-01", "window": { "start": { "local": "2018-09-01T11:49:47+08:00", "utc": "2018-09-01T03:49:47Z", "ms": 1535773787253.8938 }, "end": { "local": "2018-09-01T12:37:47+08:00", "utc": "2018-09-01T04:37:47Z", "ms": 1535776667253.8938 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-09-02", "window": { "start": { "local": "2018-09-02T11:49:28+08:00", "utc": "2018-09-02T03:49:28Z", "ms": 1535860168099.377 }, "end": { "local": "2018-09-02T12:37:28+08:00", "utc": "2018-09-02T04:37:28Z", "ms": 1535863048099.377 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 00:42 on Sat 1 Sep to 00:15 on Sun 2 Sep.", "fact": "2018-08-31T16:41:57Z → 2018-09-01T16:14:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 1st, 11:49–12:37 on the 2nd.", "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 1st and 0 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 40070 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Lu’an, 2018: Saturday 1 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "hala-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Hala sasthi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-09-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-01", "confidence": "determinate" } ], "quote": "In Lu’an, Hala Ṣaṣṭhī 2018 falls on Saturday 1 September. Ṣaṣṭhī runs from 00:42 on Sat 1 Sep to 00:15 on Sun 2 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1943, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2018-09-02T23:17:23+08:00", "utc": "2018-09-02T15:17:23Z", "ms": 1535901443061.234 }, "end": { "local": "2018-09-03T21:50:01+08:00", "utc": "2018-09-03T13:50:01Z", "ms": 1535982600776.3923 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-02T23:17:23+08:00", "utc": "2018-09-02T15:17:23Z", "ms": 1535901443061.234 }, "end": { "local": "2018-09-03T21:50:01+08:00", "utc": "2018-09-03T13:50:01Z", "ms": 1535982600776.3923 } }, "kaala": "nishita", "days": [ { "local_date": "2018-09-02", "window": { "start": { "local": "2018-09-02T23:49:46+08:00", "utc": "2018-09-02T15:49:46Z", "ms": 1535903386279.6191 }, "end": { "local": "2018-09-03T00:37:46+08:00", "utc": "2018-09-02T16:37:46Z", "ms": 1535906266279.6191 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-09-03", "window": { "start": { "local": "2018-09-03T23:49:27+08:00", "utc": "2018-09-03T15:49:27Z", "ms": 1535989766835.0493 }, "end": { "local": "2018-09-04T00:37:27+08:00", "utc": "2018-09-03T16:37:27Z", "ms": 1535992646835.0493 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 23:17 on Sun 2 Sep to 21:50 on Mon 3 Sep.", "fact": "2018-09-02T15:17:23Z → 2018-09-03T13:50:01Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:50–00:38 on the 2nd, 23:49–00:37 on the 3rd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during niśītha. It covers 48 of 48 minutes on the 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1943 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Lu’an, 2018: Sunday 2 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "janmashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami." } ], "not_evaluated": "The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.", "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-02", "confidence": "determinate" } ], "quote": "In Lu’an, Janmāṣṭamī 2018 falls on Sunday 2 September. Aṣṭamī runs from 23:17 on Sun 2 Sep to 21:50 on Mon 3 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38395, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "2018-09-02T00:14:44+08:00", "utc": "2018-09-01T16:14:44Z", "ms": 1535818484364.1775 }, "end": { "local": "2018-09-02T23:17:23+08:00", "utc": "2018-09-02T15:17:23Z", "ms": 1535901443061.234 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-02T00:14:44+08:00", "utc": "2018-09-01T16:14:44Z", "ms": 1535818484364.1775 }, "end": { "local": "2018-09-02T23:17:23+08:00", "utc": "2018-09-02T15:17:23Z", "ms": 1535901443061.234 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-09-01", "window": { "start": { "local": "2018-09-01T11:49:47+08:00", "utc": "2018-09-01T03:49:47Z", "ms": 1535773787253.8938 }, "end": { "local": "2018-09-01T12:37:47+08:00", "utc": "2018-09-01T04:37:47Z", "ms": 1535776667253.8938 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-09-02", "window": { "start": { "local": "2018-09-02T11:49:28+08:00", "utc": "2018-09-02T03:49:28Z", "ms": 1535860168099.377 }, "end": { "local": "2018-09-02T12:37:28+08:00", "utc": "2018-09-02T04:37:28Z", "ms": 1535863048099.377 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 00:15 on Sun 2 Sep to 23:17 on Sun 2 Sep.", "fact": "2018-09-01T16:14:44Z → 2018-09-02T15:17:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 1st, 11:49–12:37 on the 2nd.", "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 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: purvaviddha → only-day · margin 38395 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Lu’an, 2018: Sunday 2 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitala-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 7 Sitala saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-02", "confidence": "determinate" } ], "quote": "In Lu’an, Śītalā Saptamī 2018 falls on Sunday 2 September. Saptamī runs from 00:15 on Sun 2 Sep to 23:17 on Sun 2 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-09-06", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31984, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-09-05T17:30:58+08:00", "utc": "2018-09-05T09:30:58Z", "ms": 1536139858454.8364 }, "end": { "local": "2018-09-06T14:45:31+08:00", "utc": "2018-09-06T06:45:31Z", "ms": 1536216330621.424 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-05T17:30:58+08:00", "utc": "2018-09-05T09:30:58Z", "ms": 1536139858454.8364 }, "end": { "local": "2018-09-06T14:45:31+08:00", "utc": "2018-09-06T06:45:31Z", "ms": 1536216330621.424 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-09-05", "window": { "start": { "local": "2018-09-05T05:51:50+08:00", "utc": "2018-09-04T21:51:50Z", "ms": 1536097909951.0483 }, "end": { "local": "2018-09-05T05:51:50+08:00", "utc": "2018-09-04T21:51:50Z", "ms": 1536097909951.0483 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-09-06", "window": { "start": { "local": "2018-09-06T05:52:26+08:00", "utc": "2018-09-05T21:52:26Z", "ms": 1536184346157.0442 }, "end": { "local": "2018-09-06T05:52:26+08:00", "utc": "2018-09-05T21:52:26Z", "ms": 1536184346157.0442 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 17:31 on Wed 5 Sep to 14:46 on Thu 6 Sep.", "fact": "2018-09-05T09:30:58Z → 2018-09-06T06:45:31Z" }, { "step": "kaala", "text": "Sunrise is at 05:52 on the 5th and 05:52 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 5th and is 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 31984 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Lu’an, 2018: Thursday 6 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": "2018-09-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-06", "confidence": "determinate" } ], "quote": "In Lu’an, Ajā Ekādaśī 2018 falls on Thursday 6 September. Ekādaśī runs from 17:31 on Wed 5 Sep to 14:46 on Thu 6 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-09-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-09-07", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24478, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-09-07T11:42:37+08:00", "utc": "2018-09-07T03:42:37Z", "ms": 1536291757497.336 }, "end": { "local": "2018-09-08T08:28:57+08:00", "utc": "2018-09-08T00:28:57Z", "ms": 1536366537181.8208 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-07T11:42:37+08:00", "utc": "2018-09-07T03:42:37Z", "ms": 1536291757497.336 }, "end": { "local": "2018-09-08T08:28:57+08:00", "utc": "2018-09-08T00:28:57Z", "ms": 1536366537181.8208 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-09-07", "window": { "start": { "local": "2018-09-07T18:30:35+08:00", "utc": "2018-09-07T10:30:35Z", "ms": 1536316235212.58 }, "end": { "local": "2018-09-07T20:01:40+08:00", "utc": "2018-09-07T12:01:40Z", "ms": 1536321699645.319 } }, "covered_min": 91, "window_min": 91, "qualifies": true }, { "local_date": "2018-09-08", "window": { "start": { "local": "2018-09-08T18:29:18+08:00", "utc": "2018-09-08T10:29:18Z", "ms": 1536402558152.823 }, "end": { "local": "2018-09-08T20:00:38+08:00", "utc": "2018-09-08T12:00:38Z", "ms": 1536408037674.0977 } }, "covered_min": 0, "window_min": 91, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 11:43 on Fri 7 Sep to 08:29 on Sat 8 Sep.", "fact": "2018-09-07T03:42:37Z → 2018-09-08T00:28:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:31–20:02 on the 7th, 18:29–20:01 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 91 of 91 minutes on the 7th and 0 of 91 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 24478 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lu’an, 2018: Friday 7 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": "2018-09-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-07", "confidence": "determinate" } ], "quote": "In Lu’an, Kṛṣṇa Pradoṣa Vrata 2018 falls on Friday 7 September. Trayodaśī runs from 11:43 on Fri 7 Sep to 08:29 on Sat 8 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-09-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33101, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-09-08T08:28:57+08:00", "utc": "2018-09-08T00:28:57Z", "ms": 1536366537181.8208 }, "end": { "local": "2018-09-09T05:12:19+08:00", "utc": "2018-09-08T21:12:19Z", "ms": 1536441138890.2273 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-08T08:28:57+08:00", "utc": "2018-09-08T00:28:57Z", "ms": 1536366537181.8208 }, "end": { "local": "2018-09-09T05:12:19+08:00", "utc": "2018-09-08T21:12:19Z", "ms": 1536441138890.2273 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-09-07", "window": { "start": { "local": "2018-09-07T18:30:35+08:00", "utc": "2018-09-07T10:30:35Z", "ms": 1536316235212.58 }, "end": { "local": "2018-09-07T20:01:40+08:00", "utc": "2018-09-07T12:01:40Z", "ms": 1536321699645.319 } }, "covered_min": 0, "window_min": 91, "qualifies": false }, { "local_date": "2018-09-08", "window": { "start": { "local": "2018-09-08T18:29:18+08:00", "utc": "2018-09-08T10:29:18Z", "ms": 1536402558152.823 }, "end": { "local": "2018-09-08T20:00:38+08:00", "utc": "2018-09-08T12:00:38Z", "ms": 1536408037674.0977 } }, "covered_min": 91, "window_min": 91, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:29 on Sat 8 Sep to 05:12 on Sun 9 Sep.", "fact": "2018-09-08T00:28:57Z → 2018-09-08T21:12:19Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:31–20:02 on the 7th, 18:29–20:01 on the 8th.", "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 91 minutes on the 7th and 91 of 91 on the 8th.", "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 33101 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Lu’an, 2018: Saturday 8 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aghora-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Aghora caturdasi (pradosa vyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-08", "confidence": "determinate" } ], "quote": "In Lu’an, Aghora Caturdaśī 2018 falls on Saturday 8 September. Caturdaśī runs from 08:29 on Sat 8 Sep to 05:12 on Sun 9 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/shivaratri?on=2018-09-08", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16593, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-09-08T08:28:57+08:00", "utc": "2018-09-08T00:28:57Z", "ms": 1536366537181.8208 }, "end": { "local": "2018-09-09T05:12:19+08:00", "utc": "2018-09-08T21:12:19Z", "ms": 1536441138890.2273 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-08T08:28:57+08:00", "utc": "2018-09-08T00:28:57Z", "ms": 1536366537181.8208 }, "end": { "local": "2018-09-09T05:12:19+08:00", "utc": "2018-09-08T21:12:19Z", "ms": 1536441138890.2273 } }, "kaala": "nishita", "days": [ { "local_date": "2018-09-07", "window": { "start": { "local": "2018-09-07T23:48:07+08:00", "utc": "2018-09-07T15:48:07Z", "ms": 1536335286835.351 }, "end": { "local": "2018-09-08T00:36:07+08:00", "utc": "2018-09-07T16:36:07Z", "ms": 1536338166835.351 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-09-08", "window": { "start": { "local": "2018-09-08T23:47:46+08:00", "utc": "2018-09-08T15:47:46Z", "ms": 1536421666357.6025 }, "end": { "local": "2018-09-09T00:35:46+08:00", "utc": "2018-09-08T16:35:46Z", "ms": 1536424546357.6025 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:29 on Sat 8 Sep to 05:12 on Sun 9 Sep.", "fact": "2018-09-08T00:28:57Z → 2018-09-08T21:12:19Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:48–00:36 on the 7th, 23:48–00:36 on the 8th.", "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 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16593 s" }, { "step": "ruling", "text": "Śivarātri, Lu’an, 2018: Saturday 8 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": "2018-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-08", "confidence": "determinate" } ], "quote": "In Lu’an, Śivarātri 2018 falls on Saturday 8 September. Caturdaśī runs from 08:29 on Sat 8 Sep to 05:12 on Sun 9 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/shivaratri?on=2018-09-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35119, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2018-09-10T02:01:28+08:00", "utc": "2018-09-09T18:01:28Z", "ms": 1536516087831.1147 }, "end": { "local": "2018-09-10T23:05:46+08:00", "utc": "2018-09-10T15:05:46Z", "ms": 1536591945515.9116 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-10T02:01:28+08:00", "utc": "2018-09-09T18:01:28Z", "ms": 1536516087831.1147 }, "end": { "local": "2018-09-10T23:05:46+08:00", "utc": "2018-09-10T15:05:46Z", "ms": 1536591945515.9116 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-09-10", "window": { "start": { "local": "2018-09-10T11:46:47+08:00", "utc": "2018-09-10T03:46:47Z", "ms": 1536551206898.4746 }, "end": { "local": "2018-09-10T12:34:47+08:00", "utc": "2018-09-10T04:34:47Z", "ms": 1536554086898.4746 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-09-11", "window": { "start": { "local": "2018-09-11T11:46:26+08:00", "utc": "2018-09-11T03:46:26Z", "ms": 1536637585982.0305 }, "end": { "local": "2018-09-11T12:34:26+08:00", "utc": "2018-09-11T04:34:26Z", "ms": 1536640465982.0305 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 02:01 on Mon 10 Sep to 23:06 on Mon 10 Sep.", "fact": "2018-09-09T18:01:28Z → 2018-09-10T15:05:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 10th, 11:46–12:34 on the 11th.", "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 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: purvaviddha → only-day · margin 35119 s" }, { "step": "ruling", "text": "Rudra Vrata, Lu’an, 2018: Monday 10 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rudra-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Rudra vrata (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-10", "confidence": "determinate" } ], "quote": "In Lu’an, Rudra Vrata 2018 falls on Monday 10 September. Pratipadā runs from 02:01 on Mon 10 Sep to 23:06 on Mon 10 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21804, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "2018-09-11T20:34:44+08:00", "utc": "2018-09-11T12:34:44Z", "ms": 1536669283697.1453 }, "end": { "local": "2018-09-12T18:37:29+08:00", "utc": "2018-09-12T10:37:29Z", "ms": 1536748648969.6477 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-11T20:34:44+08:00", "utc": "2018-09-11T12:34:44Z", "ms": 1536669283697.1453 }, "end": { "local": "2018-09-12T18:37:29+08:00", "utc": "2018-09-12T10:37:29Z", "ms": 1536748648969.6477 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-09-11", "window": { "start": { "local": "2018-09-11T11:46:26+08:00", "utc": "2018-09-11T03:46:26Z", "ms": 1536637585982.0305 }, "end": { "local": "2018-09-11T12:34:26+08:00", "utc": "2018-09-11T04:34:26Z", "ms": 1536640465982.0305 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-09-12", "window": { "start": { "local": "2018-09-12T11:46:05+08:00", "utc": "2018-09-12T03:46:05Z", "ms": 1536723964942.8162 }, "end": { "local": "2018-09-12T12:34:05+08:00", "utc": "2018-09-12T04:34:05Z", "ms": 1536726844942.8162 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 20:35 on Tue 11 Sep to 18:37 on Wed 12 Sep.", "fact": "2018-09-11T12:34:44Z → 2018-09-12T10:37:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 11th, 11:46–12:34 on the 12th.", "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 11th and 48 of 48 on the 12th.", "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 21804 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Lu’an, 2018: Wednesday 12 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "haritalika-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Haritalika vrata (paraviddha), Gauri vrata (Orissa), Gauri (Mysore)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-09-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-12", "confidence": "determinate" } ], "quote": "In Lu’an, Haritālikā Vrata (Hartalika Teej) 2018 falls on Wednesday 12 September. Tṛtīyā runs from 20:35 on Tue 11 Sep to 18:37 on Wed 12 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17291, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-09-12T18:37:29+08:00", "utc": "2018-09-12T10:37:29Z", "ms": 1536748648969.6477 }, "end": { "local": "2018-09-13T17:21:55+08:00", "utc": "2018-09-13T09:21:55Z", "ms": 1536830515144.8503 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-12T18:37:29+08:00", "utc": "2018-09-12T10:37:29Z", "ms": 1536748648969.6477 }, "end": { "local": "2018-09-13T17:21:55+08:00", "utc": "2018-09-13T09:21:55Z", "ms": 1536830515144.8503 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-09-12", "window": { "start": { "local": "2018-09-12T11:46:05+08:00", "utc": "2018-09-12T03:46:05Z", "ms": 1536723964942.8162 }, "end": { "local": "2018-09-12T12:34:05+08:00", "utc": "2018-09-12T04:34:05Z", "ms": 1536726844942.8162 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-09-13", "window": { "start": { "local": "2018-09-13T11:45:44+08:00", "utc": "2018-09-13T03:45:44Z", "ms": 1536810343796.4023 }, "end": { "local": "2018-09-13T12:33:44+08:00", "utc": "2018-09-13T04:33:44Z", "ms": 1536813223796.4023 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 18:37 on Wed 12 Sep to 17:22 on Thu 13 Sep.", "fact": "2018-09-12T10:37:29Z → 2018-09-13T09:21:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 12th, 11:46–12:34 on the 13th.", "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 12th and 48 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 17291 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Lu’an, 2018: Thursday 13 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Varada caturthi (purvaviddha, madhyahnavyapini), Samvatsari parva (Jain-caturthi paksa), Saubhagya caturthi (Bengal), Ganesa caturthi (madhyahna vyapini and purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-13", "confidence": "determinate" } ], "quote": "In Lu’an, Gaṇeśa Caturthī 2018 falls on Thursday 13 September. Caturthī runs from 18:37 on Wed 12 Sep to 17:22 on Thu 13 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15620, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2018-09-13T17:21:55+08:00", "utc": "2018-09-13T09:21:55Z", "ms": 1536830515144.8503 }, "end": { "local": "2018-09-14T16:53:43+08:00", "utc": "2018-09-14T08:53:43Z", "ms": 1536915222981.1626 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-13T17:21:55+08:00", "utc": "2018-09-13T09:21:55Z", "ms": 1536830515144.8503 }, "end": { "local": "2018-09-14T16:53:43+08:00", "utc": "2018-09-14T08:53:43Z", "ms": 1536915222981.1626 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-09-13", "window": { "start": { "local": "2018-09-13T11:45:44+08:00", "utc": "2018-09-13T03:45:44Z", "ms": 1536810343796.4023 }, "end": { "local": "2018-09-13T12:33:44+08:00", "utc": "2018-09-13T04:33:44Z", "ms": 1536813223796.4023 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-09-14", "window": { "start": { "local": "2018-09-14T11:45:23+08:00", "utc": "2018-09-14T03:45:23Z", "ms": 1536896722559.454 }, "end": { "local": "2018-09-14T12:33:23+08:00", "utc": "2018-09-14T04:33:23Z", "ms": 1536899602559.454 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 17:22 on Thu 13 Sep to 16:54 on Fri 14 Sep.", "fact": "2018-09-13T09:21:55Z → 2018-09-14T08:53:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 13th, 11:45–12:33 on the 14th.", "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 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 15620 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Lu’an, 2018: Friday 14 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Rsi pancami (madhyahnavyapini) — If occurs on two successive days, it is to be observed according to Madhava on the 1st day and according to Hemadri and Divodasa on the 2nd day" } ], "kaala": "madhyahna", "priority": "disputed", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-09-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-14", "confidence": "determinate" } ], "quote": "In Lu’an, Ṛṣi Pañcamī 2018 falls on Friday 14 September. Pañcamī runs from 17:22 on Thu 13 Sep to 16:54 on Fri 14 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15620, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2018-09-14T16:53:43+08:00", "utc": "2018-09-14T08:53:43Z", "ms": 1536915222981.1626 }, "end": { "local": "2018-09-15T17:15:13+08:00", "utc": "2018-09-15T09:15:13Z", "ms": 1537002912849.6812 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-14T16:53:43+08:00", "utc": "2018-09-14T08:53:43Z", "ms": 1536915222981.1626 }, "end": { "local": "2018-09-15T17:15:13+08:00", "utc": "2018-09-15T09:15:13Z", "ms": 1537002912849.6812 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-09-14", "window": { "start": { "local": "2018-09-14T11:45:23+08:00", "utc": "2018-09-14T03:45:23Z", "ms": 1536896722559.454 }, "end": { "local": "2018-09-14T12:33:23+08:00", "utc": "2018-09-14T04:33:23Z", "ms": 1536899602559.454 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-09-15", "window": { "start": { "local": "2018-09-15T11:45:01+08:00", "utc": "2018-09-15T03:45:01Z", "ms": 1536983101249.6958 }, "end": { "local": "2018-09-15T12:33:01+08:00", "utc": "2018-09-15T04:33:01Z", "ms": 1536985981249.6958 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 16:54 on Fri 14 Sep to 17:15 on Sat 15 Sep.", "fact": "2018-09-14T08:53:43Z → 2018-09-15T09:15:13Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 14th, 11:45–12:33 on the 15th.", "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 14th and 48 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15620 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Lu’an, 2018: Saturday 15 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi-bhadrapada", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Surya sasthi (paraviddha), Lolarka sasthi" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-09-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-15", "confidence": "determinate" } ], "quote": "In Lu’an, Sūrya Ṣaṣṭhī (Bhādrapada) 2018 falls on Saturday 15 September. Ṣaṣṭhī runs from 16:54 on Fri 14 Sep to 17:15 on Sat 15 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16932, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2018-09-15T17:15:13+08:00", "utc": "2018-09-15T09:15:13Z", "ms": 1537002912849.6812 }, "end": { "local": "2018-09-16T18:24:25+08:00", "utc": "2018-09-16T10:24:25Z", "ms": 1537093465156.734 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-15T17:15:13+08:00", "utc": "2018-09-15T09:15:13Z", "ms": 1537002912849.6812 }, "end": { "local": "2018-09-16T18:24:25+08:00", "utc": "2018-09-16T10:24:25Z", "ms": 1537093465156.734 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-09-15", "window": { "start": { "local": "2018-09-15T11:45:01+08:00", "utc": "2018-09-15T03:45:01Z", "ms": 1536983101249.6958 }, "end": { "local": "2018-09-15T12:33:01+08:00", "utc": "2018-09-15T04:33:01Z", "ms": 1536985981249.6958 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-09-16", "window": { "start": { "local": "2018-09-16T11:44:40+08:00", "utc": "2018-09-16T03:44:40Z", "ms": 1537069479885.8088 }, "end": { "local": "2018-09-16T12:32:40+08:00", "utc": "2018-09-16T04:32:40Z", "ms": 1537072359885.8088 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 17:15 on Sat 15 Sep to 18:24 on Sun 16 Sep.", "fact": "2018-09-15T09:15:13Z → 2018-09-16T10:24:25Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 15th, 11:45–12:33 on the 16th.", "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 15th and 48 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 16932 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Lu’an, 2018: Sunday 16 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": "2018-09-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-16", "confidence": "determinate" } ], "quote": "In Lu’an, Muktābharaṇa Vrata 2018 falls on Sunday 16 September. Saptamī runs from 17:15 on Sat 15 Sep to 18:24 on Sun 16 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21105, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2018-09-16T18:24:25+08:00", "utc": "2018-09-16T10:24:25Z", "ms": 1537093465156.734 }, "end": { "local": "2018-09-17T20:14:32+08:00", "utc": "2018-09-17T12:14:32Z", "ms": 1537186471983.9614 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-16T18:24:25+08:00", "utc": "2018-09-16T10:24:25Z", "ms": 1537093465156.734 }, "end": { "local": "2018-09-17T20:14:32+08:00", "utc": "2018-09-17T12:14:32Z", "ms": 1537186471983.9614 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-09-16", "window": { "start": { "local": "2018-09-16T11:44:40+08:00", "utc": "2018-09-16T03:44:40Z", "ms": 1537069479885.8088 }, "end": { "local": "2018-09-16T12:32:40+08:00", "utc": "2018-09-16T04:32:40Z", "ms": 1537072359885.8088 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-09-17", "window": { "start": { "local": "2018-09-17T11:44:18+08:00", "utc": "2018-09-17T03:44:18Z", "ms": 1537155858487.3005 }, "end": { "local": "2018-09-17T12:32:18+08:00", "utc": "2018-09-17T04:32:18Z", "ms": 1537158738487.3005 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 18:24 on Sun 16 Sep to 20:15 on Mon 17 Sep.", "fact": "2018-09-16T10:24:25Z → 2018-09-17T12:14:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 16th, 11:44–12:32 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21105 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Lu’an, 2018: Monday 17 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": "2018-09-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-17", "confidence": "determinate" } ], "quote": "In Lu’an, Rādhāṣṭamī 2018 falls on Monday 17 September. Aṣṭamī runs from 18:24 on Sun 16 Sep to 20:15 on Mon 17 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-09-20", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8096, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-09-20T01:09:57+08:00", "utc": "2018-09-19T17:09:57Z", "ms": 1537376997300.0315 }, "end": { "local": "2018-09-21T03:46:32+08:00", "utc": "2018-09-20T19:46:32Z", "ms": 1537472791552.3367 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-20T01:09:57+08:00", "utc": "2018-09-19T17:09:57Z", "ms": 1537376997300.0315 }, "end": { "local": "2018-09-21T03:46:32+08:00", "utc": "2018-09-20T19:46:32Z", "ms": 1537472791552.3367 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-09-20", "window": { "start": { "local": "2018-09-20T06:00:52+08:00", "utc": "2018-09-19T22:00:52Z", "ms": 1537394451541.1116 }, "end": { "local": "2018-09-20T06:00:52+08:00", "utc": "2018-09-19T22:00:52Z", "ms": 1537394451541.1116 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-09-21", "window": { "start": { "local": "2018-09-21T06:01:28+08:00", "utc": "2018-09-20T22:01:28Z", "ms": 1537480887866.7085 }, "end": { "local": "2018-09-21T06:01:28+08:00", "utc": "2018-09-20T22:01:28Z", "ms": 1537480887866.7085 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:10 on Thu 20 Sep to 03:47 on Fri 21 Sep.", "fact": "2018-09-19T17:09:57Z → 2018-09-20T19:46:32Z" }, { "step": "kaala", "text": "Sunrise is at 06:01 on the 20th and 06:01 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 8096 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Lu’an, 2018: Thursday 20 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": "2018-09-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-20", "confidence": "determinate" } ], "quote": "In Lu’an, Parivartanī Ekādaśī 2018 falls on Thursday 20 September. Ekādaśī runs from 01:10 on Thu 20 Sep to 03:47 on Fri 21 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-09-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19891, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2018-09-21T03:46:32+08:00", "utc": "2018-09-20T19:46:32Z", "ms": 1537472791552.3367 }, "end": { "local": "2018-09-22T06:11:01+08:00", "utc": "2018-09-21T22:11:01Z", "ms": 1537567860848.9966 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-21T03:46:32+08:00", "utc": "2018-09-20T19:46:32Z", "ms": 1537472791552.3367 }, "end": { "local": "2018-09-22T06:11:01+08:00", "utc": "2018-09-21T22:11:01Z", "ms": 1537567860848.9966 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-09-21", "window": { "start": { "local": "2018-09-21T11:42:53+08:00", "utc": "2018-09-21T03:42:53Z", "ms": 1537501372959.8599 }, "end": { "local": "2018-09-21T12:30:53+08:00", "utc": "2018-09-21T04:30:53Z", "ms": 1537504252959.8599 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-09-22", "window": { "start": { "local": "2018-09-22T11:42:32+08:00", "utc": "2018-09-22T03:42:32Z", "ms": 1537587751702.5078 }, "end": { "local": "2018-09-22T12:30:32+08:00", "utc": "2018-09-22T04:30:32Z", "ms": 1537590631702.5078 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 03:47 on Fri 21 Sep to 06:11 on Sat 22 Sep.", "fact": "2018-09-20T19:46:32Z → 2018-09-21T22:11:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 21st, 11:43–12:31 on the 22nd.", "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 21st and 0 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19891 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Lu’an, 2018: Friday 21 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": "2018-09-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-21", "confidence": "determinate" } ], "quote": "In Lu’an, Vāmana Jayantī 2018 falls on Friday 21 September. Dvādaśī runs from 03:47 on Fri 21 Sep to 06:11 on Sat 22 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/pradosha-vrata?on=2018-09-22", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35767, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-09-22T06:11:01+08:00", "utc": "2018-09-21T22:11:01Z", "ms": 1537567860848.9966 }, "end": { "local": "2018-09-23T08:13:33+08:00", "utc": "2018-09-23T00:13:33Z", "ms": 1537661613398.4084 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-22T06:11:01+08:00", "utc": "2018-09-21T22:11:01Z", "ms": 1537567860848.9966 }, "end": { "local": "2018-09-23T08:13:33+08:00", "utc": "2018-09-23T00:13:33Z", "ms": 1537661613398.4084 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-09-22", "window": { "start": { "local": "2018-09-22T18:10:59+08:00", "utc": "2018-09-22T10:10:59Z", "ms": 1537611059117.3413 }, "end": { "local": "2018-09-22T19:45:53+08:00", "utc": "2018-09-22T11:45:53Z", "ms": 1537616752677.6216 } }, "covered_min": 95, "window_min": 95, "qualifies": true }, { "local_date": "2018-09-23", "window": { "start": { "local": "2018-09-23T18:09:40+08:00", "utc": "2018-09-23T10:09:40Z", "ms": 1537697380260.085 }, "end": { "local": "2018-09-23T19:44:49+08:00", "utc": "2018-09-23T11:44:49Z", "ms": 1537703089222.4814 } }, "covered_min": 0, "window_min": 95, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:11 on Sat 22 Sep to 08:14 on Sun 23 Sep.", "fact": "2018-09-21T22:11:01Z → 2018-09-23T00:13:33Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:11–19:46 on the 22nd, 18:10–19:45 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 95 of 95 minutes on the 22nd and 0 of 95 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35767 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lu’an, 2018: Saturday 22 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": "2018-09-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-22", "confidence": "determinate" } ], "quote": "In Lu’an, Śukla Pradoṣa Vrata 2018 falls on Saturday 22 September. Trayodaśī runs from 06:11 on Sat 22 Sep to 08:14 on Sun 23 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-09-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 871, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-09-23T08:13:33+08:00", "utc": "2018-09-23T00:13:33Z", "ms": 1537661613398.4084 }, "end": { "local": "2018-09-24T09:48:09+08:00", "utc": "2018-09-24T01:48:09Z", "ms": 1537753689242.162 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "2018-09-23T08:13:33+08:00", "utc": "2018-09-23T00:13:33Z", "ms": 1537661613398.4084 }, "end": { "local": "2018-09-24T09:48:09+08:00", "utc": "2018-09-24T01:48:09Z", "ms": 1537753689242.162 } }, "kaala": "udaya-3", "days": [ { "local_date": "2018-09-23", "window": { "start": { "local": "2018-09-23T06:02:41+08:00", "utc": "2018-09-22T22:02:41Z", "ms": 1537653760819.443 }, "end": { "local": "2018-09-23T08:28:05+08:00", "utc": "2018-09-23T00:28:05Z", "ms": 1537662484707.5715 } }, "covered_min": 15, "window_min": 145, "qualifies": false }, { "local_date": "2018-09-24", "window": { "start": { "local": "2018-09-24T06:03:17+08:00", "utc": "2018-09-23T22:03:17Z", "ms": 1537740197478.058 }, "end": { "local": "2018-09-24T08:28:18+08:00", "utc": "2018-09-24T00:28:18Z", "ms": 1537748898284.7546 } }, "covered_min": 145, "window_min": 145, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 08:14 on Sun 23 Sep to 09:48 on Mon 24 Sep.", "fact": "2018-09-23T00:13:33Z → 2018-09-24T01:48:09Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:03–08:28 on the 23rd, 06:03–08:28 on the 24th.", "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 15 of 145 minutes on the 23rd and 145 of 145 on the 24th.", "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 871 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Lu’an, 2018: Monday 24 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": "2018-09-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-24", "confidence": "determinate" } ], "quote": "In Lu’an, Ananta Caturdaśī 2018 falls on Monday 24 September. Caturdaśī runs from 08:14 on Sun 23 Sep to 09:48 on Mon 24 Sep and covers all of the first three muhūrtas after sunrise that morning.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/sankashta-chaturthi?on=2018-09-28", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32547, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-09-28T11:14:38+08:00", "utc": "2018-09-28T03:14:38Z", "ms": 1538104478302.8882 }, "end": { "local": "2018-09-29T10:34:01+08:00", "utc": "2018-09-29T02:34:01Z", "ms": 1538188440799.8599 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-09-28T11:14:38+08:00", "utc": "2018-09-28T03:14:38Z", "ms": 1538104478302.8882 }, "end": { "local": "2018-09-29T10:34:01+08:00", "utc": "2018-09-29T02:34:01Z", "ms": 1538188440799.8599 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-09-28", "window": { "start": { "local": "2018-09-28T20:17:05+08:00", "utc": "2018-09-28T12:17:05Z", "ms": 1538137024901.584 }, "end": { "local": "2018-09-28T20:17:05+08:00", "utc": "2018-09-28T12:17:05Z", "ms": 1538137024901.584 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-09-29", "window": { "start": { "local": "2018-09-29T20:57:32+08:00", "utc": "2018-09-29T12:57:32Z", "ms": 1538225851615.5842 }, "end": { "local": "2018-09-29T20:57:32+08:00", "utc": "2018-09-29T12:57:32Z", "ms": 1538225851615.5842 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:15 on Fri 28 Sep to 10:34 on Sat 29 Sep.", "fact": "2018-09-28T03:14:38Z → 2018-09-29T02:34:01Z" }, { "step": "kaala", "text": "Moonrise is at 20:17 on the 28th and 20:58 on the 29th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 28th and is not on the 29th.", "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 32547 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lu’an, 2018: Friday 28 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-28", "confidence": "determinate" } ], "quote": "In Lu’an, Saṅkaṣṭa Caturthī 2018 falls on Friday 28 September. Caturthī runs from 11:15 on Fri 28 Sep to 10:34 on Sat 29 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/sankashta-chaturthi?on=2018-09-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-09-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37945, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2018-09-30T09:33:37+08:00", "utc": "2018-09-30T01:33:37Z", "ms": 1538271217018.0454 }, "end": { "local": "2018-10-01T08:15:05+08:00", "utc": "2018-10-01T00:15:05Z", "ms": 1538352904691.5183 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-09-30T09:33:37+08:00", "utc": "2018-09-30T01:33:37Z", "ms": 1538271217018.0454 }, "end": { "local": "2018-10-01T08:15:05+08:00", "utc": "2018-10-01T00:15:05Z", "ms": 1538352904691.5183 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-09-29", "window": { "start": { "local": "2018-09-29T20:57:32+08:00", "utc": "2018-09-29T12:57:32Z", "ms": 1538225851615.5842 }, "end": { "local": "2018-09-29T20:57:32+08:00", "utc": "2018-09-29T12:57:32Z", "ms": 1538225851615.5842 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-09-30", "window": { "start": { "local": "2018-09-30T21:42:40+08:00", "utc": "2018-09-30T13:42:40Z", "ms": 1538314959720.9036 }, "end": { "local": "2018-09-30T21:42:40+08:00", "utc": "2018-09-30T13:42:40Z", "ms": 1538314959720.9036 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 09:34 on Sun 30 Sep to 08:15 on Mon 1 Oct.", "fact": "2018-09-30T01:33:37Z → 2018-10-01T00:15:05Z" }, { "step": "kaala", "text": "Moonrise is at 20:58 on the 29th and 21:43 on the 30th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is not on the 29th and is on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 37945 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Lu’an, 2018: Sunday 30 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": "2018-09-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-09-30", "confidence": "determinate" } ], "quote": "In Lu’an, Candra Ṣaṣṭhī 2018 falls on Sunday 30 September. Ṣaṣṭhī runs from 09:34 on Sun 30 Sep to 08:15 on Mon 1 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33119, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2018-10-02T06:39:25+08:00", "utc": "2018-10-01T22:39:25Z", "ms": 1538433565413.93 }, "end": { "local": "2018-10-03T04:47:26+08:00", "utc": "2018-10-02T20:47:26Z", "ms": 1538513245742.2275 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-02T06:39:25+08:00", "utc": "2018-10-01T22:39:25Z", "ms": 1538433565413.93 }, "end": { "local": "2018-10-03T04:47:26+08:00", "utc": "2018-10-02T20:47:26Z", "ms": 1538513245742.2275 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-10-01", "window": { "start": { "local": "2018-10-01T17:59:16+08:00", "utc": "2018-10-01T09:59:16Z", "ms": 1538387955887.5808 }, "end": { "local": "2018-10-01T19:36:28+08:00", "utc": "2018-10-01T11:36:28Z", "ms": 1538393788082.344 } }, "covered_min": 0, "window_min": 97, "qualifies": false }, { "local_date": "2018-10-02", "window": { "start": { "local": "2018-10-02T17:57:59+08:00", "utc": "2018-10-02T09:57:59Z", "ms": 1538474279110.1528 }, "end": { "local": "2018-10-02T19:35:27+08:00", "utc": "2018-10-02T11:35:27Z", "ms": 1538480126682.538 } }, "covered_min": 97, "window_min": 97, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 06:39 on Tue 2 Oct to 04:47 on Wed 3 Oct.", "fact": "2018-10-01T22:39:25Z → 2018-10-02T20:47:26Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:59–19:36 on the 1st, 17:58–19:35 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 0 of 97 minutes on the 1st and 97 of 97 on the 2nd.", "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 33119 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Lu’an, 2018: Tuesday 2 October.", "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": "2018-10-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-02", "confidence": "determinate" } ], "quote": "In Lu’an, Jitāṣṭamī (Jitiya) 2018 falls on Tuesday 2 October. Aṣṭamī runs from 06:39 on Tue 2 Oct to 04:47 on Wed 3 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19061, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2018-10-02T06:39:25+08:00", "utc": "2018-10-01T22:39:25Z", "ms": 1538433565413.93 }, "end": { "local": "2018-10-03T04:47:26+08:00", "utc": "2018-10-02T20:47:26Z", "ms": 1538513245742.2275 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-02T06:39:25+08:00", "utc": "2018-10-01T22:39:25Z", "ms": 1538433565413.93 }, "end": { "local": "2018-10-03T04:47:26+08:00", "utc": "2018-10-02T20:47:26Z", "ms": 1538513245742.2275 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-10-01", "window": { "start": { "local": "2018-10-01T22:33:20+08:00", "utc": "2018-10-01T14:33:20Z", "ms": 1538404399781.0088 }, "end": { "local": "2018-10-01T22:33:20+08:00", "utc": "2018-10-01T14:33:20Z", "ms": 1538404399781.0088 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-10-02", "window": { "start": { "local": "2018-10-02T23:29:45+08:00", "utc": "2018-10-02T15:29:45Z", "ms": 1538494184725.6624 }, "end": { "local": "2018-10-02T23:29:45+08:00", "utc": "2018-10-02T15:29:45Z", "ms": 1538494184725.6624 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 06:39 on Tue 2 Oct to 04:47 on Wed 3 Oct.", "fact": "2018-10-01T22:39:25Z → 2018-10-02T20:47:26Z" }, { "step": "kaala", "text": "Moonrise is at 22:33 on the 1st and 23:30 on the 2nd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 1st and is on the 2nd.", "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 19061 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Lu’an, 2018: Tuesday 2 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalakshmi-vrata-samapana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-10-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-02", "confidence": "determinate" } ], "quote": "In Lu’an, Mahālakṣmī Vrata Samāpana 2018 falls on Tuesday 2 October. Aṣṭamī runs from 06:39 on Tue 2 Oct to 04:47 on Wed 3 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-10-05", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21057, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-10-05T00:19:17+08:00", "utc": "2018-10-04T16:19:17Z", "ms": 1538669957162.1123 }, "end": { "local": "2018-10-05T21:47:55+08:00", "utc": "2018-10-05T13:47:55Z", "ms": 1538747275036.1294 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-05T00:19:17+08:00", "utc": "2018-10-04T16:19:17Z", "ms": 1538669957162.1123 }, "end": { "local": "2018-10-05T21:47:55+08:00", "utc": "2018-10-05T13:47:55Z", "ms": 1538747275036.1294 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-10-05", "window": { "start": { "local": "2018-10-05T06:10:14+08:00", "utc": "2018-10-04T22:10:14Z", "ms": 1538691013876.0898 }, "end": { "local": "2018-10-05T06:10:14+08:00", "utc": "2018-10-04T22:10:14Z", "ms": 1538691013876.0898 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-10-06", "window": { "start": { "local": "2018-10-06T06:10:53+08:00", "utc": "2018-10-05T22:10:53Z", "ms": 1538777453313.0928 }, "end": { "local": "2018-10-06T06:10:53+08:00", "utc": "2018-10-05T22:10:53Z", "ms": 1538777453313.0928 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:19 on Fri 5 Oct to 21:48 on Fri 5 Oct.", "fact": "2018-10-04T16:19:17Z → 2018-10-05T13:47:55Z" }, { "step": "kaala", "text": "Sunrise is at 06:10 on the 5th and 06:11 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 21057 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Lu’an, 2018: Friday 5 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": "2018-10-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-05", "confidence": "determinate" } ], "quote": "In Lu’an, Indirā Ekādaśī 2018 falls on Friday 5 October. Ekādaśī runs from 00:19 on Fri 5 Oct to 21:48 on Fri 5 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-10-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-10-06", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1259, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-10-06T19:10:26+08:00", "utc": "2018-10-06T11:10:26Z", "ms": 1538824226432.8416 }, "end": { "local": "2018-10-07T16:32:46+08:00", "utc": "2018-10-07T08:32:46Z", "ms": 1538901166173.427 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-06T19:10:26+08:00", "utc": "2018-10-06T11:10:26Z", "ms": 1538824226432.8416 }, "end": { "local": "2018-10-07T16:32:46+08:00", "utc": "2018-10-07T08:32:46Z", "ms": 1538901166173.427 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-10-06", "window": { "start": { "local": "2018-10-06T17:52:56+08:00", "utc": "2018-10-06T09:52:56Z", "ms": 1538819576099.6133 }, "end": { "local": "2018-10-06T19:31:25+08:00", "utc": "2018-10-06T11:31:25Z", "ms": 1538825485027.7175 } }, "covered_min": 21, "window_min": 98, "qualifies": true }, { "local_date": "2018-10-07", "window": { "start": { "local": "2018-10-07T17:51:42+08:00", "utc": "2018-10-07T09:51:42Z", "ms": 1538905901508.5862 }, "end": { "local": "2018-10-07T19:30:26+08:00", "utc": "2018-10-07T11:30:26Z", "ms": 1538911825723.9624 } }, "covered_min": 0, "window_min": 99, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:10 on Sat 6 Oct to 16:33 on Sun 7 Oct.", "fact": "2018-10-06T11:10:26Z → 2018-10-07T08:32:46Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:53–19:31 on the 6th, 17:52–19:30 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 21 of 98 minutes on the 6th and 0 of 99 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 1259 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lu’an, 2018: 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": "2018-10-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-06", "confidence": "determinate" } ], "quote": "In Lu’an, Kṛṣṇa Pradoṣa Vrata 2018 falls on Saturday 6 October. Trayodaśī runs from 19:10 on Sat 6 Oct to 16:33 on Sun 7 Oct and covers 21 of 98 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-10-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/shivaratri?on=2018-10-07", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25511, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-10-07T16:32:46+08:00", "utc": "2018-10-07T08:32:46Z", "ms": 1538901166173.427 }, "end": { "local": "2018-10-08T14:02:09+08:00", "utc": "2018-10-08T06:02:09Z", "ms": 1538978529138.7585 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-07T16:32:46+08:00", "utc": "2018-10-07T08:32:46Z", "ms": 1538901166173.427 }, "end": { "local": "2018-10-08T14:02:09+08:00", "utc": "2018-10-08T06:02:09Z", "ms": 1538978529138.7585 } }, "kaala": "nishita", "days": [ { "local_date": "2018-10-07", "window": { "start": { "local": "2018-10-07T23:37:57+08:00", "utc": "2018-10-07T15:37:57Z", "ms": 1538926677316.2473 }, "end": { "local": "2018-10-08T00:25:57+08:00", "utc": "2018-10-07T16:25:57Z", "ms": 1538929557316.2473 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-10-08", "window": { "start": { "local": "2018-10-08T23:37:40+08:00", "utc": "2018-10-08T15:37:40Z", "ms": 1539013060471.4546 }, "end": { "local": "2018-10-09T00:25:40+08:00", "utc": "2018-10-08T16:25:40Z", "ms": 1539015940471.4546 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 16:33 on Sun 7 Oct to 14:02 on Mon 8 Oct.", "fact": "2018-10-07T08:32:46Z → 2018-10-08T06:02:09Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:38–00:26 on the 7th, 23:38–00:26 on the 8th.", "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 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25511 s" }, { "step": "ruling", "text": "Śivarātri, Lu’an, 2018: Sunday 7 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": "2018-10-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-07", "confidence": "determinate" } ], "quote": "In Lu’an, Śivarātri 2018 falls on Sunday 7 October. Caturdaśī runs from 16:33 on Sun 7 Oct to 14:02 on Mon 8 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/shivaratri?on=2018-10-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3059, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2018-10-08T14:02:09+08:00", "utc": "2018-10-08T06:02:09Z", "ms": 1538978529138.7585 }, "end": { "local": "2018-10-09T11:46:51+08:00", "utc": "2018-10-09T03:46:51Z", "ms": 1539056810561.2227 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-08T14:02:09+08:00", "utc": "2018-10-08T06:02:09Z", "ms": 1538978529138.7585 }, "end": { "local": "2018-10-09T11:46:51+08:00", "utc": "2018-10-09T03:46:51Z", "ms": 1539056810561.2227 } }, "kaala": "aparahna", "days": [ { "local_date": "2018-10-08", "window": { "start": { "local": "2018-10-08T13:11:10+08:00", "utc": "2018-10-08T05:11:10Z", "ms": 1538975469710.1467 }, "end": { "local": "2018-10-08T15:30:49+08:00", "utc": "2018-10-08T07:30:49Z", "ms": 1538983848572.226 } }, "covered_min": 89, "window_min": 140, "qualifies": true }, { "local_date": "2018-10-09", "window": { "start": { "local": "2018-10-09T13:10:42+08:00", "utc": "2018-10-09T05:10:42Z", "ms": 1539061841744.6853 }, "end": { "local": "2018-10-09T15:29:58+08:00", "utc": "2018-10-09T07:29:58Z", "ms": 1539070197823.3792 } }, "covered_min": 0, "window_min": 139, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 14:02 on Mon 8 Oct to 11:47 on Tue 9 Oct.", "fact": "2018-10-08T06:02:09Z → 2018-10-09T03:46:51Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:11–15:31 on the 8th, 13:11–15:30 on the 9th.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 89 of 140 minutes on the 8th and 0 of 139 on the 9th.", "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 3059 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Lu’an, 2018: Monday 8 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalaya-amavasya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Mahalaya amavasya (aparahnavyapini)" } ], "not_evaluated": "The note on p. 106 gives the first day in a decreasing tithimāna and the second in an increasing one, when amāvāsyā covers the whole of aparāhṇa on both days; tithimāna is not computed.", "kaala": "aparahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-10-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-08", "confidence": "determinate" } ], "quote": "In Lu’an, Mahālaya Amāvāsyā 2018 falls on Monday 8 October. Amāvasyā runs from 14:02 on Mon 8 Oct to 11:47 on Tue 9 Oct and covers 89 of 140 minutes of aparāhṇa that afternoon.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 587, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2018-10-09T11:46:51+08:00", "utc": "2018-10-09T03:46:51Z", "ms": 1539056810561.2227 }, "end": { "local": "2018-10-10T09:55:36+08:00", "utc": "2018-10-10T01:55:36Z", "ms": 1539136535822.0413 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-09T11:46:51+08:00", "utc": "2018-10-09T03:46:51Z", "ms": 1539056810561.2227 }, "end": { "local": "2018-10-10T09:55:36+08:00", "utc": "2018-10-10T01:55:36Z", "ms": 1539136535822.0413 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-10-09", "window": { "start": { "local": "2018-10-09T11:37:04+08:00", "utc": "2018-10-09T03:37:04Z", "ms": 1539056223705.3384 }, "end": { "local": "2018-10-09T12:25:04+08:00", "utc": "2018-10-09T04:25:04Z", "ms": 1539059103705.3384 } }, "covered_min": 38, "window_min": 48, "qualifies": true }, { "local_date": "2018-10-10", "window": { "start": { "local": "2018-10-10T11:36:48+08:00", "utc": "2018-10-10T03:36:48Z", "ms": 1539142607578.0776 }, "end": { "local": "2018-10-10T12:24:48+08:00", "utc": "2018-10-10T04:24:48Z", "ms": 1539145487578.0776 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 11:47 on Tue 9 Oct to 09:56 on Wed 10 Oct.", "fact": "2018-10-09T03:46:51Z → 2018-10-10T01:55:36Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 9th, 11:37–12:25 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 38 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 587 s" }, { "step": "ruling", "text": "Navarātrārambha, Lu’an, 2018: Tuesday 9 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-10-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-09", "confidence": "determinate" } ], "quote": "In Lu’an, Navarātrārambha (Navratri) 2018 falls on Tuesday 9 October. Pratipadā runs from 11:47 on Tue 9 Oct to 09:56 on Wed 10 Oct and covers 38 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-10-12", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12663, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-10-12T07:58:24+08:00", "utc": "2018-10-11T23:58:24Z", "ms": 1539302303663.2517 }, "end": { "local": "2018-10-13T08:04:59+08:00", "utc": "2018-10-13T00:04:59Z", "ms": 1539389099123.9595 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-12T07:58:24+08:00", "utc": "2018-10-11T23:58:24Z", "ms": 1539302303663.2517 }, "end": { "local": "2018-10-13T08:04:59+08:00", "utc": "2018-10-13T00:04:59Z", "ms": 1539389099123.9595 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-10-12", "window": { "start": { "local": "2018-10-12T11:36:17+08:00", "utc": "2018-10-12T03:36:17Z", "ms": 1539315376723.2793 }, "end": { "local": "2018-10-12T12:24:17+08:00", "utc": "2018-10-12T04:24:17Z", "ms": 1539318256723.2793 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-10-13", "window": { "start": { "local": "2018-10-13T11:36:02+08:00", "utc": "2018-10-13T03:36:02Z", "ms": 1539401762026.7734 }, "end": { "local": "2018-10-13T12:24:02+08:00", "utc": "2018-10-13T04:24:02Z", "ms": 1539404642026.7734 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 07:58 on Fri 12 Oct to 08:05 on Sat 13 Oct.", "fact": "2018-10-11T23:58:24Z → 2018-10-13T00:04:59Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 12th, 11:36–12:24 on the 13th.", "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 12th and 0 of 48 on the 13th.", "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 12663 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lu’an, 2018: Friday 12 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": "2018-10-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-12", "confidence": "determinate" } ], "quote": "In Lu’an, Vināyaka Caturthī 2018 falls on Friday 12 October. Caturthī runs from 07:58 on Fri 12 Oct to 08:05 on Sat 13 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-10-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12738, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2018-10-15T10:35:01+08:00", "utc": "2018-10-15T02:35:01Z", "ms": 1539570900763.333 }, "end": { "local": "2018-10-16T12:46:42+08:00", "utc": "2018-10-16T04:46:42Z", "ms": 1539665202205.107 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-15T10:35:01+08:00", "utc": "2018-10-15T02:35:01Z", "ms": 1539570900763.333 }, "end": { "local": "2018-10-16T12:46:42+08:00", "utc": "2018-10-16T04:46:42Z", "ms": 1539665202205.107 } }, "kaala": "udaya-1", "days": [ { "local_date": "2018-10-15", "window": { "start": { "local": "2018-10-15T06:17:03+08:00", "utc": "2018-10-14T22:17:03Z", "ms": 1539555422794.3096 }, "end": { "local": "2018-10-15T07:02:43+08:00", "utc": "2018-10-14T23:02:43Z", "ms": 1539558162978.6184 } }, "covered_min": 0, "window_min": 46, "qualifies": false }, { "local_date": "2018-10-16", "window": { "start": { "local": "2018-10-16T06:17:46+08:00", "utc": "2018-10-15T22:17:46Z", "ms": 1539641865544.308 }, "end": { "local": "2018-10-16T07:03:18+08:00", "utc": "2018-10-15T23:03:18Z", "ms": 1539644598279.2893 } }, "covered_min": 46, "window_min": 46, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 10:35 on Mon 15 Oct to 12:47 on Tue 16 Oct.", "fact": "2018-10-15T02:35:01Z → 2018-10-16T04:46:42Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 06:17–07:03 on the 15th, 06:18–07:03 on the 16th.", "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 46 minutes on the 15th and 46 of 46 on the 16th.", "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 12738 s" }, { "step": "ruling", "text": "Durgā Saptamī, Lu’an, 2018: Tuesday 16 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": "2018-10-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-16", "confidence": "determinate" } ], "quote": "In Lu’an, Durgā Saptamī 2018 falls on Tuesday 16 October. Saptamī runs from 10:35 on Mon 15 Oct to 12:47 on Tue 16 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1401, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2018-10-16T12:46:42+08:00", "utc": "2018-10-16T04:46:42Z", "ms": 1539665202205.107 }, "end": { "local": "2018-10-17T15:20:06+08:00", "utc": "2018-10-17T07:20:06Z", "ms": 1539760806114.8472 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-16T12:46:42+08:00", "utc": "2018-10-16T04:46:42Z", "ms": 1539665202205.107 }, "end": { "local": "2018-10-17T15:20:06+08:00", "utc": "2018-10-17T07:20:06Z", "ms": 1539760806114.8472 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-10-16", "window": { "start": { "local": "2018-10-16T11:35:21+08:00", "utc": "2018-10-16T03:35:21Z", "ms": 1539660921056.6675 }, "end": { "local": "2018-10-16T12:23:21+08:00", "utc": "2018-10-16T04:23:21Z", "ms": 1539663801056.6675 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-10-17", "window": { "start": { "local": "2018-10-17T11:35:08+08:00", "utc": "2018-10-17T03:35:08Z", "ms": 1539747308496.4082 }, "end": { "local": "2018-10-17T12:23:08+08:00", "utc": "2018-10-17T04:23:08Z", "ms": 1539750188496.4082 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 12:47 on Tue 16 Oct to 15:20 on Wed 17 Oct.", "fact": "2018-10-16T04:46:42Z → 2018-10-17T07:20:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:35–12:23 on the 16th, 11:35–12:23 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1401 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Lu’an, 2018: Wednesday 17 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": "2018-10-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-17", "confidence": "determinate" } ], "quote": "In Lu’an, Mahāṣṭamī (Durga Ashtami) 2018 falls on Wednesday 17 October. Aṣṭamī runs from 12:47 on Tue 16 Oct to 15:20 on Wed 17 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10618, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2018-10-17T15:20:06+08:00", "utc": "2018-10-17T07:20:06Z", "ms": 1539760806114.8472 }, "end": { "local": "2018-10-18T17:59:05+08:00", "utc": "2018-10-18T09:59:05Z", "ms": 1539856745411.4583 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-17T15:20:06+08:00", "utc": "2018-10-17T07:20:06Z", "ms": 1539760806114.8472 }, "end": { "local": "2018-10-18T17:59:05+08:00", "utc": "2018-10-18T09:59:05Z", "ms": 1539856745411.4583 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-10-17", "window": { "start": { "local": "2018-10-17T11:35:08+08:00", "utc": "2018-10-17T03:35:08Z", "ms": 1539747308496.4082 }, "end": { "local": "2018-10-17T12:23:08+08:00", "utc": "2018-10-17T04:23:08Z", "ms": 1539750188496.4082 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-10-18", "window": { "start": { "local": "2018-10-18T11:34:57+08:00", "utc": "2018-10-18T03:34:57Z", "ms": 1539833696513.3208 }, "end": { "local": "2018-10-18T12:22:57+08:00", "utc": "2018-10-18T04:22:57Z", "ms": 1539836576513.3208 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 15:20 on Wed 17 Oct to 17:59 on Thu 18 Oct.", "fact": "2018-10-17T07:20:06Z → 2018-10-18T09:59:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:35–12:23 on the 17th, 11:35–12:23 on the 18th.", "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 17th and 48 of 48 on the 18th.", "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 10618 s" }, { "step": "ruling", "text": "Mahānavamī, Lu’an, 2018: Thursday 18 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": "2018-10-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-18", "confidence": "determinate" } ], "quote": "In Lu’an, Mahānavamī 2018 falls on Thursday 18 October. Navamī runs from 15:20 on Wed 17 Oct to 17:59 on Thu 18 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1225, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "2018-10-18T17:59:05+08:00", "utc": "2018-10-18T09:59:05Z", "ms": 1539856745411.4583 }, "end": { "local": "2018-10-19T20:27:23+08:00", "utc": "2018-10-19T12:27:23Z", "ms": 1539952043088.7288 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-18T17:59:05+08:00", "utc": "2018-10-18T09:59:05Z", "ms": 1539856745411.4583 }, "end": { "local": "2018-10-19T20:27:23+08:00", "utc": "2018-10-19T12:27:23Z", "ms": 1539952043088.7288 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-10-18", "window": { "start": { "local": "2018-10-18T11:34:57+08:00", "utc": "2018-10-18T03:34:57Z", "ms": 1539833696513.3208 }, "end": { "local": "2018-10-18T12:22:57+08:00", "utc": "2018-10-18T04:22:57Z", "ms": 1539836576513.3208 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-10-19", "window": { "start": { "local": "2018-10-19T11:34:45+08:00", "utc": "2018-10-19T03:34:45Z", "ms": 1539920085125.0166 }, "end": { "local": "2018-10-19T12:22:45+08:00", "utc": "2018-10-19T04:22:45Z", "ms": 1539922965125.0166 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 17:59 on Thu 18 Oct to 20:27 on Fri 19 Oct.", "fact": "2018-10-18T09:59:05Z → 2018-10-19T12:27:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:35–12:23 on the 18th, 11:35–12:23 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Daśamī touches Śravaṇa in the day time on neither day, so the rest of the rule applies. Daśamī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1225 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Lu’an, 2018: Friday 19 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vijaya-dashami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 10 Vijaya dasami (In Bengal it is observed as paraviddha, covering one muhurta from sunrise. In other places, if it touches Sravana naksatra in the day time it is observed on that day), Sarasvati visarjana (to be observed in naksatra Sravana), Dasahara." } ], "not_evaluated": "The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day", "conjunction": { "nakshatra": "Śravaṇa", "kaala": "daytime" } }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-10-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-19", "confidence": "determinate" } ], "quote": "In Lu’an, Vijayā Daśamī (Dussehra) 2018 falls on Friday 19 October. Daśamī touches Śravaṇa in the day time on neither day, so madhyāhna decides. Daśamī runs from 17:59 on Thu 18 Oct to 20:27 on Fri 19 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-10-20", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28210, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-10-19T20:27:23+08:00", "utc": "2018-10-19T12:27:23Z", "ms": 1539952043088.7288 }, "end": { "local": "2018-10-20T22:31:14+08:00", "utc": "2018-10-20T14:31:14Z", "ms": 1540045874488.9607 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-19T20:27:23+08:00", "utc": "2018-10-19T12:27:23Z", "ms": 1539952043088.7288 }, "end": { "local": "2018-10-20T22:31:14+08:00", "utc": "2018-10-20T14:31:14Z", "ms": 1540045874488.9607 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-10-20", "window": { "start": { "local": "2018-10-20T06:20:40+08:00", "utc": "2018-10-19T22:20:40Z", "ms": 1539987640148.7642 }, "end": { "local": "2018-10-20T06:20:40+08:00", "utc": "2018-10-19T22:20:40Z", "ms": 1539987640148.7642 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-10-21", "window": { "start": { "local": "2018-10-21T06:21:25+08:00", "utc": "2018-10-20T22:21:25Z", "ms": 1540074084723.9443 }, "end": { "local": "2018-10-21T06:21:25+08:00", "utc": "2018-10-20T22:21:25Z", "ms": 1540074084723.9443 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:27 on Fri 19 Oct to 22:31 on Sat 20 Oct.", "fact": "2018-10-19T12:27:23Z → 2018-10-20T14:31:14Z" }, { "step": "kaala", "text": "Sunrise is at 06:21 on the 20th and 06:21 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 28210 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Lu’an, 2018: Saturday 20 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": "2018-10-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-20", "confidence": "determinate" } ], "quote": "In Lu’an, Pāśāṅkuśā Ekādaśī 2018 falls on Saturday 20 October. Ekādaśī runs from 20:27 on Fri 19 Oct to 22:31 on Sat 20 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-10-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-10-22", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17019, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-10-22T00:01:17+08:00", "utc": "2018-10-21T16:01:17Z", "ms": 1540137676959.2722 }, "end": { "local": "2018-10-23T00:53:04+08:00", "utc": "2018-10-22T16:53:04Z", "ms": 1540227184150.2834 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "2018-10-22T00:01:17+08:00", "utc": "2018-10-21T16:01:17Z", "ms": 1540137676959.2722 }, "end": { "local": "2018-10-23T00:53:04+08:00", "utc": "2018-10-22T16:53:04Z", "ms": 1540227184150.2834 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-10-21", "window": { "start": { "local": "2018-10-21T17:35:24+08:00", "utc": "2018-10-21T09:35:24Z", "ms": 1540114523683.6218 }, "end": { "local": "2018-10-21T19:17:38+08:00", "utc": "2018-10-21T11:17:38Z", "ms": 1540120657816.1538 } }, "covered_min": 0, "window_min": 102, "qualifies": false }, { "local_date": "2018-10-22", "window": { "start": { "local": "2018-10-22T17:34:20+08:00", "utc": "2018-10-22T09:34:20Z", "ms": 1540200859735.7185 }, "end": { "local": "2018-10-22T19:16:48+08:00", "utc": "2018-10-22T11:16:48Z", "ms": 1540207008439.5012 } }, "covered_min": 102, "window_min": 102, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:01 on Mon 22 Oct to 00:53 on Tue 23 Oct.", "fact": "2018-10-21T16:01:17Z → 2018-10-22T16:53:04Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:35–19:18 on the 21st, 17:34–19:17 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 102 minutes on the 21st and 102 of 102 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 17019 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lu’an, 2018: Monday 22 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": "2018-10-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-22", "confidence": "determinate" } ], "quote": "In Lu’an, Śukla Pradoṣa Vrata 2018 falls on Monday 22 October. Trayodaśī runs from 00:01 on Mon 22 Oct to 00:53 on Tue 23 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-10-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-27", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 3860, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-10-27T21:08:13+08:00", "utc": "2018-10-27T13:08:13Z", "ms": 1540645692730.5356 }, "end": { "local": "2018-10-28T19:24:48+08:00", "utc": "2018-10-28T11:24:48Z", "ms": 1540725888488.0803 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-10-27T21:08:13+08:00", "utc": "2018-10-27T13:08:13Z", "ms": 1540645692730.5356 }, "end": { "local": "2018-10-28T19:24:48+08:00", "utc": "2018-10-28T11:24:48Z", "ms": 1540725888488.0803 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-10-27", "window": { "start": { "local": "2018-10-27T19:39:29+08:00", "utc": "2018-10-27T11:39:29Z", "ms": 1540640369413.4546 }, "end": { "local": "2018-10-27T19:39:29+08:00", "utc": "2018-10-27T11:39:29Z", "ms": 1540640369413.4546 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-10-28", "window": { "start": { "local": "2018-10-28T20:29:08+08:00", "utc": "2018-10-28T12:29:08Z", "ms": 1540729748292.058 }, "end": { "local": "2018-10-28T20:29:08+08:00", "utc": "2018-10-28T12:29:08Z", "ms": 1540729748292.058 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:08 on Sat 27 Oct to 19:25 on Sun 28 Oct.", "fact": "2018-10-27T13:08:13Z → 2018-10-28T11:24:48Z" }, { "step": "kaala", "text": "Moonrise is at 19:39 on the 27th and 20:29 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: purvaviddha → tithi-day · margin 3860 s" }, { "step": "ruling", "text": "Karaka Caturthī, Lu’an, 2018: Saturday 27 October.", "fact": "confidence: boundary (absent-unstated)" } ], "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": "2018-10-27", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-27", "confidence": "boundary" } ], "quote": "In Lu’an, Karaka Caturthī (Karwa Chauth) 2018 falls on Saturday 27 October. Caturthī runs from 21:08 on Sat 27 Oct to 19:25 on Sun 28 Oct, and is current at moonrise on neither day.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/sankashta-chaturthi?on=2018-10-27", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-27", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 3860, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-10-27T21:08:13+08:00", "utc": "2018-10-27T13:08:13Z", "ms": 1540645692730.5356 }, "end": { "local": "2018-10-28T19:24:48+08:00", "utc": "2018-10-28T11:24:48Z", "ms": 1540725888488.0803 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-10-27T21:08:13+08:00", "utc": "2018-10-27T13:08:13Z", "ms": 1540645692730.5356 }, "end": { "local": "2018-10-28T19:24:48+08:00", "utc": "2018-10-28T11:24:48Z", "ms": 1540725888488.0803 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-10-27", "window": { "start": { "local": "2018-10-27T19:39:29+08:00", "utc": "2018-10-27T11:39:29Z", "ms": 1540640369413.4546 }, "end": { "local": "2018-10-27T19:39:29+08:00", "utc": "2018-10-27T11:39:29Z", "ms": 1540640369413.4546 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-10-28", "window": { "start": { "local": "2018-10-28T20:29:08+08:00", "utc": "2018-10-28T12:29:08Z", "ms": 1540729748292.058 }, "end": { "local": "2018-10-28T20:29:08+08:00", "utc": "2018-10-28T12:29:08Z", "ms": 1540729748292.058 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:08 on Sat 27 Oct to 19:25 on Sun 28 Oct.", "fact": "2018-10-27T13:08:13Z → 2018-10-28T11:24:48Z" }, { "step": "kaala", "text": "Moonrise is at 19:39 on the 27th and 20:29 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 3860 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lu’an, 2018: Saturday 27 October.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-10-27", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-27", "confidence": "boundary" } ], "quote": "In Lu’an, Saṅkaṣṭa Caturthī 2018 falls on Saturday 27 October. Caturthī runs from 21:08 on Sat 27 Oct to 19:25 on Sun 28 Oct, and is current at moonrise on neither day.", "cite": "https://ahargana.org/lu-an/festivals/2018/sankashta-chaturthi?on=2018-10-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35270, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2018-10-31T13:40:05+08:00", "utc": "2018-10-31T05:40:05Z", "ms": 1540964404659.8496 }, "end": { "local": "2018-11-01T11:40:17+08:00", "utc": "2018-11-01T03:40:17Z", "ms": 1541043616981.3337 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-10-31T13:40:05+08:00", "utc": "2018-10-31T05:40:05Z", "ms": 1540964404659.8496 }, "end": { "local": "2018-11-01T11:40:17+08:00", "utc": "2018-11-01T03:40:17Z", "ms": 1541043616981.3337 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-10-31", "window": { "start": { "local": "2018-10-31T23:27:55+08:00", "utc": "2018-10-31T15:27:55Z", "ms": 1540999674972.788 }, "end": { "local": "2018-10-31T23:27:55+08:00", "utc": "2018-10-31T15:27:55Z", "ms": 1540999674972.788 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-11-01", "window": { "start": { "local": "2018-11-02T00:32:58+08:00", "utc": "2018-11-01T16:32:58Z", "ms": 1541089978137.0996 }, "end": { "local": "2018-11-02T00:32:58+08:00", "utc": "2018-11-01T16:32:58Z", "ms": 1541089978137.0996 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 13:40 on Wed 31 Oct to 11:40 on Thu 1 Nov.", "fact": "2018-10-31T05:40:05Z → 2018-11-01T03:40:17Z" }, { "step": "kaala", "text": "Moonrise is at 23:28 on the 31st and 00:33 on the 1st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 31st and is not on the 1st.", "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 35270 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Lu’an, 2018: Wednesday 31 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": "2018-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-10-31", "confidence": "determinate" } ], "quote": "In Lu’an, Ahoyī Aṣṭamī 2018 falls on Wednesday 31 October. Aṣṭamī runs from 13:40 on Wed 31 Oct to 11:40 on Thu 1 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-11-03", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2903, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-11-03T07:40:24+08:00", "utc": "2018-11-02T23:40:24Z", "ms": 1541202024040.4907 }, "end": { "local": "2018-11-04T05:44:07+08:00", "utc": "2018-11-03T21:44:07Z", "ms": 1541281446838.772 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-03T07:40:24+08:00", "utc": "2018-11-02T23:40:24Z", "ms": 1541202024040.4907 }, "end": { "local": "2018-11-04T05:44:07+08:00", "utc": "2018-11-03T21:44:07Z", "ms": 1541281446838.772 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-11-03", "window": { "start": { "local": "2018-11-03T06:31:40+08:00", "utc": "2018-11-02T22:31:40Z", "ms": 1541197899665.2588 }, "end": { "local": "2018-11-03T06:31:40+08:00", "utc": "2018-11-02T22:31:40Z", "ms": 1541197899665.2588 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-11-04", "window": { "start": { "local": "2018-11-04T06:32:30+08:00", "utc": "2018-11-03T22:32:30Z", "ms": 1541284349651.6992 }, "end": { "local": "2018-11-04T06:32:30+08:00", "utc": "2018-11-03T22:32:30Z", "ms": 1541284349651.6992 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 07:40 on Sat 3 Nov to 05:44 on Sun 4 Nov.", "fact": "2018-11-02T23:40:24Z → 2018-11-03T21:44:07Z" }, { "step": "kaala", "text": "Sunrise is at 06:32 on the 3rd and 06:32 on the 4th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 3rd and is not on the 4th.", "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 2903 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Lu’an, 2018: 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": "2018-11-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-03", "confidence": "determinate" } ], "quote": "In Lu’an, Ramā Ekādaśī 2018 falls on Saturday 3 November. Ekādaśī runs from 07:40 on Sat 3 Nov to 05:44 on Sun 4 Nov, and is current at sunrise on neither day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-11-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31625, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2018-11-04T05:44:07+08:00", "utc": "2018-11-03T21:44:07Z", "ms": 1541281446838.772 }, "end": { "local": "2018-11-05T03:54:41+08:00", "utc": "2018-11-04T19:54:41Z", "ms": 1541361281271.5168 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-04T05:44:07+08:00", "utc": "2018-11-03T21:44:07Z", "ms": 1541281446838.772 }, "end": { "local": "2018-11-05T03:54:41+08:00", "utc": "2018-11-04T19:54:41Z", "ms": 1541361281271.5168 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-11-03", "window": { "start": { "local": "2018-11-03T17:22:56+08:00", "utc": "2018-11-03T09:22:56Z", "ms": 1541236975605.6655 }, "end": { "local": "2018-11-03T19:08:12+08:00", "utc": "2018-11-03T11:08:12Z", "ms": 1541243292145.1367 } }, "covered_min": 0, "window_min": 105, "qualifies": false }, { "local_date": "2018-11-04", "window": { "start": { "local": "2018-11-04T17:22:06+08:00", "utc": "2018-11-04T09:22:06Z", "ms": 1541323326466.8599 }, "end": { "local": "2018-11-04T19:07:36+08:00", "utc": "2018-11-04T11:07:36Z", "ms": 1541329656268.179 } }, "covered_min": 105, "window_min": 105, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 05:44 on Sun 4 Nov to 03:55 on Mon 5 Nov.", "fact": "2018-11-03T21:44:07Z → 2018-11-04T19:54:41Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:23–19:08 on the 3rd, 17:22–19:08 on the 4th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 0 of 105 minutes on the 3rd and 105 of 105 on the 4th.", "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 31625 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Lu’an, 2018: Sunday 4 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-04", "confidence": "determinate" } ], "quote": "In Lu’an, Govatsa Dvādaśī (Vasu Baras) 2018 falls on Sunday 4 November. Dvādaśī runs from 05:44 on Sun 4 Nov to 03:55 on Mon 5 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25802, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-11-05T03:54:41+08:00", "utc": "2018-11-04T19:54:41Z", "ms": 1541361281271.5168 }, "end": { "local": "2018-11-06T02:17:04+08:00", "utc": "2018-11-05T18:17:04Z", "ms": 1541441823984.6372 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-05T03:54:41+08:00", "utc": "2018-11-04T19:54:41Z", "ms": 1541361281271.5168 }, "end": { "local": "2018-11-06T02:17:04+08:00", "utc": "2018-11-05T18:17:04Z", "ms": 1541441823984.6372 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-11-04", "window": { "start": { "local": "2018-11-04T17:22:06+08:00", "utc": "2018-11-04T09:22:06Z", "ms": 1541323326466.8599 }, "end": { "local": "2018-11-04T19:07:36+08:00", "utc": "2018-11-04T11:07:36Z", "ms": 1541329656268.179 } }, "covered_min": 0, "window_min": 105, "qualifies": false }, { "local_date": "2018-11-05", "window": { "start": { "local": "2018-11-05T17:21:19+08:00", "utc": "2018-11-05T09:21:19Z", "ms": 1541409678669.2864 }, "end": { "local": "2018-11-05T19:07:02+08:00", "utc": "2018-11-05T11:07:02Z", "ms": 1541416021596.4048 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:55 on Mon 5 Nov to 02:17 on Tue 6 Nov.", "fact": "2018-11-04T19:54:41Z → 2018-11-05T18:17:04Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:22–19:08 on the 4th, 17:21–19:07 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 105 minutes on the 4th and 106 of 106 on the 5th.", "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 25802 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Lu’an, 2018: Monday 5 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dipadana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 13 Yama dipadana (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-05", "confidence": "determinate" } ], "quote": "In Lu’an, Yama Dīpadāna 2018 falls on Monday 5 November. Trayodaśī runs from 03:55 on Mon 5 Nov to 02:17 on Tue 6 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/pradosha-vrata?on=2018-11-05", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25802, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-11-05T03:54:41+08:00", "utc": "2018-11-04T19:54:41Z", "ms": 1541361281271.5168 }, "end": { "local": "2018-11-06T02:17:04+08:00", "utc": "2018-11-05T18:17:04Z", "ms": 1541441823984.6372 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-05T03:54:41+08:00", "utc": "2018-11-04T19:54:41Z", "ms": 1541361281271.5168 }, "end": { "local": "2018-11-06T02:17:04+08:00", "utc": "2018-11-05T18:17:04Z", "ms": 1541441823984.6372 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-11-04", "window": { "start": { "local": "2018-11-04T17:22:06+08:00", "utc": "2018-11-04T09:22:06Z", "ms": 1541323326466.8599 }, "end": { "local": "2018-11-04T19:07:36+08:00", "utc": "2018-11-04T11:07:36Z", "ms": 1541329656268.179 } }, "covered_min": 0, "window_min": 105, "qualifies": false }, { "local_date": "2018-11-05", "window": { "start": { "local": "2018-11-05T17:21:19+08:00", "utc": "2018-11-05T09:21:19Z", "ms": 1541409678669.2864 }, "end": { "local": "2018-11-05T19:07:02+08:00", "utc": "2018-11-05T11:07:02Z", "ms": 1541416021596.4048 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:55 on Mon 5 Nov to 02:17 on Tue 6 Nov.", "fact": "2018-11-04T19:54:41Z → 2018-11-05T18:17:04Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:22–19:08 on the 4th, 17:21–19:07 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 105 minutes on the 4th and 106 of 106 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 25802 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lu’an, 2018: Monday 5 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": "2018-11-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-05", "confidence": "determinate" } ], "quote": "In Lu’an, Kṛṣṇa Pradoṣa Vrata 2018 falls on Monday 5 November. Trayodaśī runs from 03:55 on Mon 5 Nov to 02:17 on Tue 6 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-11-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9084, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-11-06T02:17:04+08:00", "utc": "2018-11-05T18:17:04Z", "ms": 1541441823984.6372 }, "end": { "local": "2018-11-07T00:57:18+08:00", "utc": "2018-11-06T16:57:18Z", "ms": 1541523437595.22 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-06T02:17:04+08:00", "utc": "2018-11-05T18:17:04Z", "ms": 1541441823984.6372 }, "end": { "local": "2018-11-07T00:57:18+08:00", "utc": "2018-11-06T16:57:18Z", "ms": 1541523437595.22 } }, "kaala": "arunodaya", "days": [ { "local_date": "2018-11-06", "window": { "start": { "local": "2018-11-06T04:48:28+08:00", "utc": "2018-11-05T20:48:28Z", "ms": 1541450907695.5562 }, "end": { "local": "2018-11-06T06:34:11+08:00", "utc": "2018-11-05T22:34:11Z", "ms": 1541457250622.6746 } }, "covered_min": 106, "window_min": 106, "qualifies": true }, { "local_date": "2018-11-07", "window": { "start": { "local": "2018-11-07T04:49:06+08:00", "utc": "2018-11-06T20:49:06Z", "ms": 1541537345658.7756 }, "end": { "local": "2018-11-07T06:35:02+08:00", "utc": "2018-11-06T22:35:02Z", "ms": 1541543701569.84 } }, "covered_min": 0, "window_min": 106, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:17 on Tue 6 Nov to 00:57 on Wed 7 Nov.", "fact": "2018-11-05T18:17:04Z → 2018-11-06T16:57:18Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:48–06:34 on the 6th, 04:49–06:35 on the 7th.", "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 106 of 106 minutes on the 6th and 0 of 106 on the 7th.", "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 9084 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Lu’an, 2018: Tuesday 6 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naraka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Naraka caturdasi (covering a period of 4 ghatikas before sunrise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "arunodaya", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-11-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-06", "confidence": "determinate" } ], "quote": "In Lu’an, Naraka Caturdaśī (Choti Diwali) 2018 falls on Tuesday 6 November. Caturdaśī runs from 02:17 on Tue 6 Nov to 00:57 on Wed 7 Nov and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/shivaratri?on=2018-11-06", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2131, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-11-06T02:17:04+08:00", "utc": "2018-11-05T18:17:04Z", "ms": 1541441823984.6372 }, "end": { "local": "2018-11-07T00:57:18+08:00", "utc": "2018-11-06T16:57:18Z", "ms": 1541523437595.22 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-06T02:17:04+08:00", "utc": "2018-11-05T18:17:04Z", "ms": 1541441823984.6372 }, "end": { "local": "2018-11-07T00:57:18+08:00", "utc": "2018-11-06T16:57:18Z", "ms": 1541523437595.22 } }, "kaala": "nishita", "days": [ { "local_date": "2018-11-05", "window": { "start": { "local": "2018-11-05T23:33:45+08:00", "utc": "2018-11-05T15:33:45Z", "ms": 1541432024645.9805 }, "end": { "local": "2018-11-06T00:21:45+08:00", "utc": "2018-11-05T16:21:45Z", "ms": 1541434904645.9805 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-11-06", "window": { "start": { "local": "2018-11-06T23:33:47+08:00", "utc": "2018-11-06T15:33:47Z", "ms": 1541518426903.3481 }, "end": { "local": "2018-11-07T00:21:47+08:00", "utc": "2018-11-06T16:21:47Z", "ms": 1541521306903.3481 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:17 on Tue 6 Nov to 00:57 on Wed 7 Nov.", "fact": "2018-11-05T18:17:04Z → 2018-11-06T16:57:18Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:34–00:22 on the 5th, 23:34–00:22 on the 6th.", "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 5th and 48 of 48 on the 6th.", "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 2131 s" }, { "step": "ruling", "text": "Śivarātri, Lu’an, 2018: Tuesday 6 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": "2018-11-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-06", "confidence": "determinate" } ], "quote": "In Lu’an, Śivarātri 2018 falls on Tuesday 6 November. Caturdaśī runs from 02:17 on Tue 6 Nov to 00:57 on Wed 7 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/shivaratri?on=2018-11-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17767, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2018-11-07T00:57:18+08:00", "utc": "2018-11-06T16:57:18Z", "ms": 1541523437595.22 }, "end": { "local": "2018-11-08T00:02:02+08:00", "utc": "2018-11-07T16:02:02Z", "ms": 1541606522475.1738 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-07T00:57:18+08:00", "utc": "2018-11-06T16:57:18Z", "ms": 1541523437595.22 }, "end": { "local": "2018-11-08T00:02:02+08:00", "utc": "2018-11-07T16:02:02Z", "ms": 1541606522475.1738 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-11-06", "window": { "start": { "local": "2018-11-06T17:20:32+08:00", "utc": "2018-11-06T09:20:32Z", "ms": 1541496032236.8562 }, "end": { "local": "2018-11-06T19:06:28+08:00", "utc": "2018-11-06T11:06:28Z", "ms": 1541502388147.9207 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2018-11-07", "window": { "start": { "local": "2018-11-07T17:19:47+08:00", "utc": "2018-11-07T09:19:47Z", "ms": 1541582387192.7126 }, "end": { "local": "2018-11-07T19:05:56+08:00", "utc": "2018-11-07T11:05:56Z", "ms": 1541588755939.9482 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 00:57 on Wed 7 Nov to 00:02 on Thu 8 Nov.", "fact": "2018-11-06T16:57:18Z → 2018-11-07T16:02:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:21–19:06 on the 6th, 17:20–19:06 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 0 of 106 minutes on the 6th and 106 of 106 on the 7th.", "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 17767 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Lu’an, 2018: Wednesday 7 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "diwali-lakshmi-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-11-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-07", "confidence": "determinate" } ], "quote": "In Lu’an, Lakṣmī Pūjā (Diwali) 2018 falls on Wednesday 7 November. Amāvasyā runs from 00:57 on Wed 7 Nov to 00:02 on Thu 8 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1188, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "2018-11-07T00:57:18+08:00", "utc": "2018-11-06T16:57:18Z", "ms": 1541523437595.22 }, "end": { "local": "2018-11-08T00:02:02+08:00", "utc": "2018-11-07T16:02:02Z", "ms": 1541606522475.1738 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-07T00:57:18+08:00", "utc": "2018-11-06T16:57:18Z", "ms": 1541523437595.22 }, "end": { "local": "2018-11-08T00:02:02+08:00", "utc": "2018-11-07T16:02:02Z", "ms": 1541606522475.1738 } }, "kaala": "nishita", "days": [ { "local_date": "2018-11-06", "window": { "start": { "local": "2018-11-06T23:33:47+08:00", "utc": "2018-11-06T15:33:47Z", "ms": 1541518426903.3481 }, "end": { "local": "2018-11-07T00:21:47+08:00", "utc": "2018-11-06T16:21:47Z", "ms": 1541521306903.3481 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-11-07", "window": { "start": { "local": "2018-11-07T23:33:50+08:00", "utc": "2018-11-07T15:33:50Z", "ms": 1541604829994.8457 }, "end": { "local": "2018-11-08T00:21:50+08:00", "utc": "2018-11-07T16:21:50Z", "ms": 1541607709994.8457 } }, "covered_min": 28, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 00:57 on Wed 7 Nov to 00:02 on Thu 8 Nov.", "fact": "2018-11-06T16:57:18Z → 2018-11-07T16:02:02Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:34–00:22 on the 6th, 23:34–00:22 on the 7th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 0 of 48 minutes on the 6th and 28 of 48 on the 7th.", "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 1188 s" }, { "step": "ruling", "text": "Kālī Pūjā, Lu’an, 2018: Wednesday 7 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-11-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-07", "confidence": "determinate" } ], "quote": "In Lu’an, Kālī Pūjā 2018 falls on Wednesday 7 November. Amāvasyā runs from 00:57 on Wed 7 Nov to 00:02 on Thu 8 Nov and covers 28 of 48 minutes of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40585, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2018-11-08T00:02:02+08:00", "utc": "2018-11-07T16:02:02Z", "ms": 1541606522475.1738 }, "end": { "local": "2018-11-08T23:37:53+08:00", "utc": "2018-11-08T15:37:53Z", "ms": 1541691473321.5615 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-08T00:02:02+08:00", "utc": "2018-11-07T16:02:02Z", "ms": 1541606522475.1738 }, "end": { "local": "2018-11-08T23:37:53+08:00", "utc": "2018-11-08T15:37:53Z", "ms": 1541691473321.5615 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-11-07", "window": { "start": { "local": "2018-11-07T11:33:24+08:00", "utc": "2018-11-07T03:33:24Z", "ms": 1541561604381.2764 }, "end": { "local": "2018-11-07T12:21:24+08:00", "utc": "2018-11-07T04:21:24Z", "ms": 1541564484381.2764 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-11-08", "window": { "start": { "local": "2018-11-08T11:33:28+08:00", "utc": "2018-11-08T03:33:28Z", "ms": 1541648008178.245 }, "end": { "local": "2018-11-08T12:21:28+08:00", "utc": "2018-11-08T04:21:28Z", "ms": 1541650888178.245 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 00:02 on Thu 8 Nov to 23:38 on Thu 8 Nov.", "fact": "2018-11-07T16:02:02Z → 2018-11-08T15:37:53Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 7th, 11:33–12:21 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 40585 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Lu’an, 2018: Thursday 8 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govardhana-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-08", "confidence": "determinate" } ], "quote": "In Lu’an, Govardhana Pūjā 2018 falls on Thursday 8 November. Pratipadā runs from 00:02 on Thu 8 Nov to 23:38 on Thu 8 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16348, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2018-11-08T00:02:02+08:00", "utc": "2018-11-07T16:02:02Z", "ms": 1541606522475.1738 }, "end": { "local": "2018-11-08T23:37:53+08:00", "utc": "2018-11-08T15:37:53Z", "ms": 1541691473321.5615 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-08T00:02:02+08:00", "utc": "2018-11-07T16:02:02Z", "ms": 1541606522475.1738 }, "end": { "local": "2018-11-08T23:37:53+08:00", "utc": "2018-11-08T15:37:53Z", "ms": 1541691473321.5615 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-11-07", "window": { "start": { "local": "2018-11-07T17:19:47+08:00", "utc": "2018-11-07T09:19:47Z", "ms": 1541582387192.7126 }, "end": { "local": "2018-11-07T19:05:56+08:00", "utc": "2018-11-07T11:05:56Z", "ms": 1541588755939.9482 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "2018-11-08", "window": { "start": { "local": "2018-11-08T17:19:04+08:00", "utc": "2018-11-08T09:19:04Z", "ms": 1541668743559.5112 }, "end": { "local": "2018-11-08T19:05:25+08:00", "utc": "2018-11-08T11:05:25Z", "ms": 1541675124989.1016 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 00:02 on Thu 8 Nov to 23:38 on Thu 8 Nov.", "fact": "2018-11-07T16:02:02Z → 2018-11-08T15:37:53Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:20–19:06 on the 7th, 17:19–19:05 on the 8th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 0 of 106 minutes on the 7th and 106 of 106 on the 8th.", "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 16348 s" }, { "step": "ruling", "text": "Bali Pūjā, Lu’an, 2018: Thursday 8 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-08", "confidence": "determinate" } ], "quote": "In Lu’an, Bali Pūjā 2018 falls on Thursday 8 November. Pratipadā runs from 00:02 on Thu 8 Nov to 23:38 on Thu 8 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23630, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "2018-11-08T00:02:02+08:00", "utc": "2018-11-07T16:02:02Z", "ms": 1541606522475.1738 }, "end": { "local": "2018-11-08T23:37:53+08:00", "utc": "2018-11-08T15:37:53Z", "ms": 1541691473321.5615 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-08T00:02:02+08:00", "utc": "2018-11-07T16:02:02Z", "ms": 1541606522475.1738 }, "end": { "local": "2018-11-08T23:37:53+08:00", "utc": "2018-11-08T15:37:53Z", "ms": 1541691473321.5615 } }, "kaala": "purvahna", "days": [ { "local_date": "2018-11-08", "window": { "start": { "local": "2018-11-08T06:35:53+08:00", "utc": "2018-11-07T22:35:53Z", "ms": 1541630152796.979 }, "end": { "local": "2018-11-08T10:10:16+08:00", "utc": "2018-11-08T02:10:16Z", "ms": 1541643016384.4897 } }, "covered_min": 214, "window_min": 214, "qualifies": true }, { "local_date": "2018-11-09", "window": { "start": { "local": "2018-11-09T06:36:44+08:00", "utc": "2018-11-08T22:36:44Z", "ms": 1541716604281.4385 }, "end": { "local": "2018-11-09T10:10:37+08:00", "utc": "2018-11-09T02:10:37Z", "ms": 1541729436640.8484 } }, "covered_min": 0, "window_min": 214, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 00:02 on Thu 8 Nov to 23:38 on Thu 8 Nov.", "fact": "2018-11-07T16:02:02Z → 2018-11-08T15:37:53Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:36–10:10 on the 8th, 06:37–10:11 on the 9th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 214 of 214 minutes on the 8th and 0 of 214 on the 9th.", "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 23630 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Lu’an, 2018: Thursday 8 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dyuta-pratipad", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-08", "confidence": "determinate" } ], "quote": "In Lu’an, Dyūta Pratipad 2018 falls on Thursday 8 November. Pratipadā runs from 00:02 on Thu 8 Nov to 23:38 on Thu 8 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 40585, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "2018-11-08T23:37:53+08:00", "utc": "2018-11-08T15:37:53Z", "ms": 1541691473321.5615 }, "end": { "local": "2018-11-09T23:50:21+08:00", "utc": "2018-11-09T15:50:21Z", "ms": 1541778620665.9846 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-08T23:37:53+08:00", "utc": "2018-11-08T15:37:53Z", "ms": 1541691473321.5615 }, "end": { "local": "2018-11-09T23:50:21+08:00", "utc": "2018-11-09T15:50:21Z", "ms": 1541778620665.9846 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-11-08", "window": { "start": { "local": "2018-11-08T11:33:28+08:00", "utc": "2018-11-08T03:33:28Z", "ms": 1541648008178.245 }, "end": { "local": "2018-11-08T12:21:28+08:00", "utc": "2018-11-08T04:21:28Z", "ms": 1541650888178.245 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-11-09", "window": { "start": { "local": "2018-11-09T11:33:33+08:00", "utc": "2018-11-09T03:33:33Z", "ms": 1541734412820.5532 }, "end": { "local": "2018-11-09T12:21:33+08:00", "utc": "2018-11-09T04:21:33Z", "ms": 1541737292820.5532 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 23:38 on Thu 8 Nov to 23:50 on Fri 9 Nov.", "fact": "2018-11-08T15:37:53Z → 2018-11-09T15:50:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 8th, 11:34–12:22 on the 9th.", "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 8th and 48 of 48 on the 9th.", "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 40585 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Lu’an, 2018: Friday 9 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dvitiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Bhratrdvitiya, Yamadvitiya (madhyahna, purvaviddha), Masyadhara (Dwat) puja (Bihar)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-09", "confidence": "determinate" } ], "quote": "In Lu’an, Yama Dvitīyā (Bhai Dooj) 2018 falls on Friday 9 November. Dvitīyā runs from 23:38 on Thu 8 Nov to 23:50 on Fri 9 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33560, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-11-11T00:42:39+08:00", "utc": "2018-11-10T16:42:39Z", "ms": 1541868159390.339 }, "end": { "local": "2018-11-12T02:14:32+08:00", "utc": "2018-11-11T18:14:32Z", "ms": 1541960072144.4236 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-11T00:42:39+08:00", "utc": "2018-11-10T16:42:39Z", "ms": 1541868159390.339 }, "end": { "local": "2018-11-12T02:14:32+08:00", "utc": "2018-11-11T18:14:32Z", "ms": 1541960072144.4236 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-11-11", "window": { "start": { "local": "2018-11-11T11:33:45+08:00", "utc": "2018-11-11T03:33:45Z", "ms": 1541907224637.872 }, "end": { "local": "2018-11-11T12:21:45+08:00", "utc": "2018-11-11T04:21:45Z", "ms": 1541910104637.872 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-11-12", "window": { "start": { "local": "2018-11-12T11:33:52+08:00", "utc": "2018-11-12T03:33:52Z", "ms": 1541993631810.1528 }, "end": { "local": "2018-11-12T12:21:52+08:00", "utc": "2018-11-12T04:21:52Z", "ms": 1541996511810.1528 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:43 on Sun 11 Nov to 02:15 on Mon 12 Nov.", "fact": "2018-11-10T16:42:39Z → 2018-11-11T18:14:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 11th, 11:34–12:22 on the 12th.", "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 11th and 0 of 48 on the 12th.", "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 33560 s" }, { "step": "ruling", "text": "Nāga Caturthī, Lu’an, 2018: Sunday 11 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Naga caturthi (paraviddha and madhyahnavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-11", "confidence": "determinate" } ], "quote": "In Lu’an, Nāga Caturthī 2018 falls on Sunday 11 November. Caturthī runs from 00:43 on Sun 11 Nov to 02:15 on Mon 12 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-11-11", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33560, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-11-11T00:42:39+08:00", "utc": "2018-11-10T16:42:39Z", "ms": 1541868159390.339 }, "end": { "local": "2018-11-12T02:14:32+08:00", "utc": "2018-11-11T18:14:32Z", "ms": 1541960072144.4236 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-11T00:42:39+08:00", "utc": "2018-11-10T16:42:39Z", "ms": 1541868159390.339 }, "end": { "local": "2018-11-12T02:14:32+08:00", "utc": "2018-11-11T18:14:32Z", "ms": 1541960072144.4236 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-11-11", "window": { "start": { "local": "2018-11-11T11:33:45+08:00", "utc": "2018-11-11T03:33:45Z", "ms": 1541907224637.872 }, "end": { "local": "2018-11-11T12:21:45+08:00", "utc": "2018-11-11T04:21:45Z", "ms": 1541910104637.872 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-11-12", "window": { "start": { "local": "2018-11-12T11:33:52+08:00", "utc": "2018-11-12T03:33:52Z", "ms": 1541993631810.1528 }, "end": { "local": "2018-11-12T12:21:52+08:00", "utc": "2018-11-12T04:21:52Z", "ms": 1541996511810.1528 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:43 on Sun 11 Nov to 02:15 on Mon 12 Nov.", "fact": "2018-11-10T16:42:39Z → 2018-11-11T18:14:32Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 11th, 11:34–12:22 on the 12th.", "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 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33560 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lu’an, 2018: Sunday 11 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": "2018-11-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-11", "confidence": "determinate" } ], "quote": "In Lu’an, Vināyaka Caturthī 2018 falls on Sunday 11 November. Caturthī runs from 00:43 on Sun 11 Nov to 02:15 on Mon 12 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-11-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16903, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2018-11-13T04:21:05+08:00", "utc": "2018-11-12T20:21:05Z", "ms": 1542054065411.938 }, "end": { "local": "2018-11-14T06:52:26+08:00", "utc": "2018-11-13T22:52:26Z", "ms": 1542149545594.3523 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-13T04:21:05+08:00", "utc": "2018-11-12T20:21:05Z", "ms": 1542054065411.938 }, "end": { "local": "2018-11-14T06:52:26+08:00", "utc": "2018-11-13T22:52:26Z", "ms": 1542149545594.3523 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-11-13", "window": { "start": { "local": "2018-11-13T11:34:00+08:00", "utc": "2018-11-13T03:34:00Z", "ms": 1542080039822.38 }, "end": { "local": "2018-11-13T12:22:00+08:00", "utc": "2018-11-13T04:22:00Z", "ms": 1542082919822.38 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-11-14", "window": { "start": { "local": "2018-11-14T11:34:09+08:00", "utc": "2018-11-14T03:34:09Z", "ms": 1542166448672.1743 }, "end": { "local": "2018-11-14T12:22:09+08:00", "utc": "2018-11-14T04:22:09Z", "ms": 1542169328672.1743 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 04:21 on Tue 13 Nov to 06:52 on Wed 14 Nov.", "fact": "2018-11-12T20:21:05Z → 2018-11-13T22:52:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 13th, 11:34–12:22 on the 14th.", "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 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16903 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Lu’an, 2018: Tuesday 13 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Nadi sasthi, Skanda sasthi (Madras), Surya sasthi, Chhat (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-11-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-13", "confidence": "determinate" } ], "quote": "In Lu’an, Sūrya Ṣaṣṭhī (Chhath) 2018 falls on Tuesday 13 November. Ṣaṣṭhī runs from 04:21 on Tue 13 Nov to 06:52 on Wed 14 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-15", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 723, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "2018-11-15T09:34:22+08:00", "utc": "2018-11-15T01:34:22Z", "ms": 1542245662199.8982 }, "end": { "local": "2018-11-16T12:10:26+08:00", "utc": "2018-11-16T04:10:26Z", "ms": 1542341425771.7449 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-15T09:34:22+08:00", "utc": "2018-11-15T01:34:22Z", "ms": 1542245662199.8982 }, "end": { "local": "2018-11-16T12:10:26+08:00", "utc": "2018-11-16T04:10:26Z", "ms": 1542341425771.7449 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-11-15", "window": { "start": { "local": "2018-11-15T11:34:18+08:00", "utc": "2018-11-15T03:34:18Z", "ms": 1542252858356.6719 }, "end": { "local": "2018-11-15T12:22:18+08:00", "utc": "2018-11-15T04:22:18Z", "ms": 1542255738356.6719 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-11-16", "window": { "start": { "local": "2018-11-16T11:34:29+08:00", "utc": "2018-11-16T03:34:29Z", "ms": 1542339268872.4832 }, "end": { "local": "2018-11-16T12:22:29+08:00", "utc": "2018-11-16T04:22:29Z", "ms": 1542342148872.4832 } }, "covered_min": 36, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 09:34 on Thu 15 Nov to 12:10 on Fri 16 Nov.", "fact": "2018-11-15T01:34:22Z → 2018-11-16T04:10:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 15th, 11:34–12:22 on the 16th.", "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 15th and 36 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 723 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Lu’an, 2018: Thursday 15 November.", "fact": "confidence: boundary (tie-break-unstated)" } ], "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": "2018-11-15", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-15", "confidence": "boundary" } ], "quote": "In Lu’an, Gopāṣṭamī 2018 falls on Thursday 15 November. Aṣṭamī runs from 09:34 on Thu 15 Nov to 12:10 on Fri 16 Nov and covers all of madhyāhna that midday. It also reaches the next midday for 36 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/lu-an/festivals/2018/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": "/lu-an/festivals/2018/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 723, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2018-11-16T12:10:26+08:00", "utc": "2018-11-16T04:10:26Z", "ms": 1542341425771.7449 }, "end": { "local": "2018-11-17T14:24:34+08:00", "utc": "2018-11-17T06:24:34Z", "ms": 1542435873641.625 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-16T12:10:26+08:00", "utc": "2018-11-16T04:10:26Z", "ms": 1542341425771.7449 }, "end": { "local": "2018-11-17T14:24:34+08:00", "utc": "2018-11-17T06:24:34Z", "ms": 1542435873641.625 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-11-16", "window": { "start": { "local": "2018-11-16T11:34:29+08:00", "utc": "2018-11-16T03:34:29Z", "ms": 1542339268872.4832 }, "end": { "local": "2018-11-16T12:22:29+08:00", "utc": "2018-11-16T04:22:29Z", "ms": 1542342148872.4832 } }, "covered_min": 12, "window_min": 48, "qualifies": true }, { "local_date": "2018-11-17", "window": { "start": { "local": "2018-11-17T11:34:40+08:00", "utc": "2018-11-17T03:34:40Z", "ms": 1542425680215.6733 }, "end": { "local": "2018-11-17T12:22:40+08:00", "utc": "2018-11-17T04:22:40Z", "ms": 1542428560215.6733 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Navamī runs from 12:10 on Fri 16 Nov to 14:25 on Sat 17 Nov.", "fact": "2018-11-16T04:10:26Z → 2018-11-17T06:24:34Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 16th, 11:35–12:23 on the 17th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 12 of 48 minutes on the 16th and 48 of 48 on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 723 s" }, { "step": "ruling", "text": "Durgā Navamī, Lu’an, 2018: Friday 16 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": "2018-11-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-16", "confidence": "determinate" } ], "quote": "In Lu’an, Durgā Navamī 2018 falls on Friday 16 November. Navamī runs from 12:10 on Fri 16 Nov to 14:25 on Sat 17 Nov and covers 12 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/lu-an/festivals/2018/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": "/lu-an/festivals/2018/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7030, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "2018-11-16T12:10:26+08:00", "utc": "2018-11-16T04:10:26Z", "ms": 1542341425771.7449 }, "end": { "local": "2018-11-17T14:24:34+08:00", "utc": "2018-11-17T06:24:34Z", "ms": 1542435873641.625 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-16T12:10:26+08:00", "utc": "2018-11-16T04:10:26Z", "ms": 1542341425771.7449 }, "end": { "local": "2018-11-17T14:24:34+08:00", "utc": "2018-11-17T06:24:34Z", "ms": 1542435873641.625 } }, "kaala": "purvahna", "days": [ { "local_date": "2018-11-16", "window": { "start": { "local": "2018-11-16T06:42:50+08:00", "utc": "2018-11-15T22:42:50Z", "ms": 1542321769781.703 }, "end": { "local": "2018-11-16T10:13:16+08:00", "utc": "2018-11-16T02:13:16Z", "ms": 1542334395842.2231 } }, "covered_min": 0, "window_min": 210, "qualifies": false }, { "local_date": "2018-11-17", "window": { "start": { "local": "2018-11-17T06:43:42+08:00", "utc": "2018-11-16T22:43:42Z", "ms": 1542408222405.556 }, "end": { "local": "2018-11-17T10:13:41+08:00", "utc": "2018-11-17T02:13:41Z", "ms": 1542420820945.634 } }, "covered_min": 210, "window_min": 210, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 12:10 on Fri 16 Nov to 14:25 on Sat 17 Nov.", "fact": "2018-11-16T04:10:26Z → 2018-11-17T06:24:34Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:43–10:13 on the 16th, 06:44–10:14 on the 17th.", "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 210 minutes on the 16th and 210 of 210 on the 17th.", "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 7030 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Lu’an, 2018: Saturday 17 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": "2018-11-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-17", "confidence": "determinate" } ], "quote": "In Lu’an, Akṣaya Navamī (Amla Navami) 2018 falls on Saturday 17 November. Navamī runs from 12:10 on Fri 16 Nov to 14:25 on Sat 17 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-11-19", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33554, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-11-18T16:03:49+08:00", "utc": "2018-11-18T08:03:49Z", "ms": 1542528229488.8474 }, "end": { "local": "2018-11-19T17:00:06+08:00", "utc": "2018-11-19T09:00:06Z", "ms": 1542618005748.5667 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-18T16:03:49+08:00", "utc": "2018-11-18T08:03:49Z", "ms": 1542528229488.8474 }, "end": { "local": "2018-11-19T17:00:06+08:00", "utc": "2018-11-19T09:00:06Z", "ms": 1542618005748.5667 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-11-18", "window": { "start": { "local": "2018-11-18T06:44:35+08:00", "utc": "2018-11-17T22:44:35Z", "ms": 1542494675046.9243 }, "end": { "local": "2018-11-18T06:44:35+08:00", "utc": "2018-11-17T22:44:35Z", "ms": 1542494675046.9243 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-11-19", "window": { "start": { "local": "2018-11-19T06:45:28+08:00", "utc": "2018-11-18T22:45:28Z", "ms": 1542581127676.1345 }, "end": { "local": "2018-11-19T06:45:28+08:00", "utc": "2018-11-18T22:45:28Z", "ms": 1542581127676.1345 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:04 on Sun 18 Nov to 17:00 on Mon 19 Nov.", "fact": "2018-11-18T08:03:49Z → 2018-11-19T09:00:06Z" }, { "step": "kaala", "text": "Sunrise is at 06:45 on the 18th and 06:45 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 33554 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Lu’an, 2018: Monday 19 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": "2018-11-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-19", "confidence": "determinate" } ], "quote": "In Lu’an, Prabodhinī Ekādaśī 2018 falls on Monday 19 November. Ekādaśī runs from 16:04 on Sun 18 Nov to 17:00 on Mon 19 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-11-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-11-20", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-20", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 109, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-11-20T17:10:29+08:00", "utc": "2018-11-20T09:10:29Z", "ms": 1542705028876.2368 }, "end": { "local": "2018-11-21T16:36:41+08:00", "utc": "2018-11-21T08:36:41Z", "ms": 1542789401396.5771 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-20T17:10:29+08:00", "utc": "2018-11-20T09:10:29Z", "ms": 1542705028876.2368 }, "end": { "local": "2018-11-21T16:36:41+08:00", "utc": "2018-11-21T08:36:41Z", "ms": 1542789401396.5771 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-11-20", "window": { "start": { "local": "2018-11-20T17:12:18+08:00", "utc": "2018-11-20T09:12:18Z", "ms": 1542705138061.8508 }, "end": { "local": "2018-11-20T19:00:57+08:00", "utc": "2018-11-20T11:00:57Z", "ms": 1542711657357.3232 } }, "covered_min": 109, "window_min": 109, "qualifies": true }, { "local_date": "2018-11-21", "window": { "start": { "local": "2018-11-21T17:11:55+08:00", "utc": "2018-11-21T09:11:55Z", "ms": 1542791514754.2048 }, "end": { "local": "2018-11-21T19:00:44+08:00", "utc": "2018-11-21T11:00:44Z", "ms": 1542798044145.6409 } }, "covered_min": 0, "window_min": 109, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:10 on Tue 20 Nov to 16:37 on Wed 21 Nov.", "fact": "2018-11-20T09:10:29Z → 2018-11-21T08:36:41Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:12–19:01 on the 20th, 17:12–19:01 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 109 of 109 minutes on the 20th and 0 of 109 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 109 s < 300 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lu’an, 2018: Tuesday 20 November.", "fact": "confidence: boundary (margin)" } ], "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": "2018-11-20", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-20", "confidence": "boundary" } ], "quote": "In Lu’an, Śukla Pradoṣa Vrata 2018 falls on Tuesday 20 November. Trayodaśī runs from 17:10 on Tue 20 Nov to 16:37 on Wed 21 Nov and covers all of pradoṣa that evening. It is 1 min 49 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-11-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29545, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-11-22T15:23:51+08:00", "utc": "2018-11-22T07:23:51Z", "ms": 1542871430724.902 }, "end": { "local": "2018-11-23T13:39:12+08:00", "utc": "2018-11-23T05:39:12Z", "ms": 1542951551766.9058 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-22T15:23:51+08:00", "utc": "2018-11-22T07:23:51Z", "ms": 1542871430724.902 }, "end": { "local": "2018-11-23T13:39:12+08:00", "utc": "2018-11-23T05:39:12Z", "ms": 1542951551766.9058 } }, "kaala": "nishita", "days": [ { "local_date": "2018-11-22", "window": { "start": { "local": "2018-11-22T23:36:15+08:00", "utc": "2018-11-22T15:36:15Z", "ms": 1542900975309.8733 }, "end": { "local": "2018-11-23T00:24:15+08:00", "utc": "2018-11-22T16:24:15Z", "ms": 1542903855309.8733 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-11-23", "window": { "start": { "local": "2018-11-23T23:36:31+08:00", "utc": "2018-11-23T15:36:31Z", "ms": 1542987391426.554 }, "end": { "local": "2018-11-24T00:24:31+08:00", "utc": "2018-11-23T16:24:31Z", "ms": 1542990271426.554 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:24 on Thu 22 Nov to 13:39 on Fri 23 Nov.", "fact": "2018-11-22T07:23:51Z → 2018-11-23T05:39:12Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:36–00:24 on the 22nd, 23:37–00:25 on the 23rd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during niśītha. It covers 48 of 48 minutes on the 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: paraviddha → only-day · margin 29545 s" }, { "step": "ruling", "text": "Rāsayātrā, Lu’an, 2018: Thursday 22 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": "2018-11-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-22", "confidence": "determinate" } ], "quote": "In Lu’an, Rāsayātrā 2018 falls on Thursday 22 November. Pūrṇimā runs from 15:24 on Thu 22 Nov to 13:39 on Fri 23 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4506, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-11-22T15:23:51+08:00", "utc": "2018-11-22T07:23:51Z", "ms": 1542871430724.902 }, "end": { "local": "2018-11-23T13:39:12+08:00", "utc": "2018-11-23T05:39:12Z", "ms": 1542951551766.9058 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "2018-11-22T15:23:51+08:00", "utc": "2018-11-22T07:23:51Z", "ms": 1542871430724.902 }, "end": { "local": "2018-11-23T13:39:12+08:00", "utc": "2018-11-23T05:39:12Z", "ms": 1542951551766.9058 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-11-22", "window": { "start": { "local": "2018-11-22T11:35:49+08:00", "utc": "2018-11-22T03:35:49Z", "ms": 1542857749170.358 }, "end": { "local": "2018-11-22T12:23:49+08:00", "utc": "2018-11-22T04:23:49Z", "ms": 1542860629170.358 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-11-23", "window": { "start": { "local": "2018-11-23T11:36:05+08:00", "utc": "2018-11-23T03:36:05Z", "ms": 1542944165368.9487 }, "end": { "local": "2018-11-23T12:24:05+08:00", "utc": "2018-11-23T04:24:05Z", "ms": 1542947045368.9487 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 15:24 on Thu 22 Nov to 13:39 on Fri 23 Nov.", "fact": "2018-11-22T07:23:51Z → 2018-11-23T05:39:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 22nd, 11:36–12:24 on the 23rd.", "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 22nd and 48 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4506 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Lu’an, 2018: Friday 23 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": "2018-11-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-23", "confidence": "determinate" } ], "quote": "In Lu’an, Kārtikī Pūrṇimā 2018 falls on Friday 23 November. Pūrṇimā runs from 15:24 on Thu 22 Nov to 13:39 on Fri 23 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/sankashta-chaturthi?on=2018-11-26", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-11-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28176, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-11-26T06:36:42+08:00", "utc": "2018-11-25T22:36:42Z", "ms": 1543185401828.9277 }, "end": { "local": "2018-11-27T04:05:14+08:00", "utc": "2018-11-26T20:05:14Z", "ms": 1543262714438.5405 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-11-26T06:36:42+08:00", "utc": "2018-11-25T22:36:42Z", "ms": 1543185401828.9277 }, "end": { "local": "2018-11-27T04:05:14+08:00", "utc": "2018-11-26T20:05:14Z", "ms": 1543262714438.5405 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-11-25", "window": { "start": { "local": "2018-11-25T19:15:21+08:00", "utc": "2018-11-25T11:15:21Z", "ms": 1543144521267.7505 }, "end": { "local": "2018-11-25T19:15:21+08:00", "utc": "2018-11-25T11:15:21Z", "ms": 1543144521267.7505 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-11-26", "window": { "start": { "local": "2018-11-26T20:15:38+08:00", "utc": "2018-11-26T12:15:38Z", "ms": 1543234538057.9536 }, "end": { "local": "2018-11-26T20:15:38+08:00", "utc": "2018-11-26T12:15:38Z", "ms": 1543234538057.9536 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 06:37 on Mon 26 Nov to 04:05 on Tue 27 Nov.", "fact": "2018-11-25T22:36:42Z → 2018-11-26T20:05:14Z" }, { "step": "kaala", "text": "Moonrise is at 19:15 on the 25th and 20:16 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 25th and is on the 26th.", "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 28176 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lu’an, 2018: Monday 26 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": "2018-11-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-11-26", "confidence": "determinate" } ], "quote": "In Lu’an, Saṅkaṣṭa Caturthī 2018 falls on Monday 26 November. Caturthī runs from 06:37 on Mon 26 Nov to 04:05 on Tue 27 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/sankashta-chaturthi?on=2018-11-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/ekadashi?on=2018-12-03", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-12-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30764, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-12-02T16:30:43+08:00", "utc": "2018-12-02T08:30:43Z", "ms": 1543739442973.6228 }, "end": { "local": "2018-12-03T15:30:10+08:00", "utc": "2018-12-03T07:30:10Z", "ms": 1543822209960.212 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-12-02T16:30:43+08:00", "utc": "2018-12-02T08:30:43Z", "ms": 1543739442973.6228 }, "end": { "local": "2018-12-03T15:30:10+08:00", "utc": "2018-12-03T07:30:10Z", "ms": 1543822209960.212 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-12-02", "window": { "start": { "local": "2018-12-02T06:56:36+08:00", "utc": "2018-12-01T22:56:36Z", "ms": 1543704996499.3008 }, "end": { "local": "2018-12-02T06:56:36+08:00", "utc": "2018-12-01T22:56:36Z", "ms": 1543704996499.3008 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-12-03", "window": { "start": { "local": "2018-12-03T06:57:26+08:00", "utc": "2018-12-02T22:57:26Z", "ms": 1543791445524.621 }, "end": { "local": "2018-12-03T06:57:26+08:00", "utc": "2018-12-02T22:57:26Z", "ms": 1543791445524.621 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:31 on Sun 2 Dec to 15:30 on Mon 3 Dec.", "fact": "2018-12-02T08:30:43Z → 2018-12-03T07:30:10Z" }, { "step": "kaala", "text": "Sunrise is at 06:57 on the 2nd and 06:57 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 30764 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Lu’an, 2018: Monday 3 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": "2018-12-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-12-03", "confidence": "determinate" } ], "quote": "In Lu’an, Utpannā Ekādaśī 2018 falls on Monday 3 December. Ekādaśī runs from 16:31 on Sun 2 Dec to 15:30 on Mon 3 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-12-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/pradosha-vrata?on=2018-12-04", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-12-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8371, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-12-04T14:50:01+08:00", "utc": "2018-12-04T06:50:01Z", "ms": 1543906200540.239 }, "end": { "local": "2018-12-05T14:32:57+08:00", "utc": "2018-12-05T06:32:57Z", "ms": 1543991577177.8337 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-12-04T14:50:01+08:00", "utc": "2018-12-04T06:50:01Z", "ms": 1543906200540.239 }, "end": { "local": "2018-12-05T14:32:57+08:00", "utc": "2018-12-05T06:32:57Z", "ms": 1543991577177.8337 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-12-04", "window": { "start": { "local": "2018-12-04T17:09:32+08:00", "utc": "2018-12-04T09:09:32Z", "ms": 1543914571904.58 }, "end": { "local": "2018-12-04T19:00:08+08:00", "utc": "2018-12-04T11:00:08Z", "ms": 1543921207898.3848 } }, "covered_min": 111, "window_min": 111, "qualifies": true }, { "local_date": "2018-12-05", "window": { "start": { "local": "2018-12-05T17:09:34+08:00", "utc": "2018-12-05T09:09:34Z", "ms": 1544000973510.1208 }, "end": { "local": "2018-12-05T19:00:16+08:00", "utc": "2018-12-05T11:00:16Z", "ms": 1544007615584.727 } }, "covered_min": 0, "window_min": 111, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:50 on Tue 4 Dec to 14:33 on Wed 5 Dec.", "fact": "2018-12-04T06:50:01Z → 2018-12-05T06:32:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:10–19:00 on the 4th, 17:10–19:00 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 111 of 111 minutes on the 4th and 0 of 111 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 8371 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Lu’an, 2018: 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": "2018-12-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-12-04", "confidence": "determinate" } ], "quote": "In Lu’an, Kṛṣṇa Pradoṣa Vrata 2018 falls on Tuesday 4 December. Trayodaśī runs from 14:50 on Tue 4 Dec to 14:33 on Wed 5 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-12-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/shivaratri?on=2018-12-05", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-12-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32341, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "2018-12-05T14:32:57+08:00", "utc": "2018-12-05T06:32:57Z", "ms": 1543991577177.8337 }, "end": { "local": "2018-12-06T14:42:05+08:00", "utc": "2018-12-06T06:42:05Z", "ms": 1544078524947.5583 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-12-05T14:32:57+08:00", "utc": "2018-12-05T06:32:57Z", "ms": 1543991577177.8337 }, "end": { "local": "2018-12-06T14:42:05+08:00", "utc": "2018-12-06T06:42:05Z", "ms": 1544078524947.5583 } }, "kaala": "nishita", "days": [ { "local_date": "2018-12-05", "window": { "start": { "local": "2018-12-05T23:40:41+08:00", "utc": "2018-12-05T15:40:41Z", "ms": 1544024441289.8943 }, "end": { "local": "2018-12-06T00:28:41+08:00", "utc": "2018-12-05T16:28:41Z", "ms": 1544027321289.8943 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-12-06", "window": { "start": { "local": "2018-12-06T23:41:06+08:00", "utc": "2018-12-06T15:41:06Z", "ms": 1544110866243.1648 }, "end": { "local": "2018-12-07T00:29:06+08:00", "utc": "2018-12-06T16:29:06Z", "ms": 1544113746243.1648 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:33 on Wed 5 Dec to 14:42 on Thu 6 Dec.", "fact": "2018-12-05T06:32:57Z → 2018-12-06T06:42:05Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:41–00:29 on the 5th, 23:41–00:29 on the 6th.", "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 5th and 0 of 48 on the 6th.", "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 32341 s" }, { "step": "ruling", "text": "Śivarātri, Lu’an, 2018: Wednesday 5 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-12-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-12-05", "confidence": "determinate" } ], "quote": "In Lu’an, Śivarātri 2018 falls on Wednesday 5 December. Caturdaśī runs from 14:33 on Wed 5 Dec to 14:42 on Thu 6 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/lu-an/festivals/2018/shivaratri?on=2018-12-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-12-11", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-12-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28180, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-12-10T20:20:09+08:00", "utc": "2018-12-10T12:20:09Z", "ms": 1544444409277.8625 }, "end": { "local": "2018-12-11T22:52:03+08:00", "utc": "2018-12-11T14:52:03Z", "ms": 1544539923419.3313 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-12-10T20:20:09+08:00", "utc": "2018-12-10T12:20:09Z", "ms": 1544444409277.8625 }, "end": { "local": "2018-12-11T22:52:03+08:00", "utc": "2018-12-11T14:52:03Z", "ms": 1544539923419.3313 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-12-10", "window": { "start": { "local": "2018-12-10T11:42:29+08:00", "utc": "2018-12-10T03:42:29Z", "ms": 1544413349288.8462 }, "end": { "local": "2018-12-10T12:30:29+08:00", "utc": "2018-12-10T04:30:29Z", "ms": 1544416229288.8462 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "2018-12-11", "window": { "start": { "local": "2018-12-11T11:42:57+08:00", "utc": "2018-12-11T03:42:57Z", "ms": 1544499776974.5227 }, "end": { "local": "2018-12-11T12:30:57+08:00", "utc": "2018-12-11T04:30:57Z", "ms": 1544502656974.5227 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 20:20 on Mon 10 Dec to 22:52 on Tue 11 Dec.", "fact": "2018-12-10T12:20:09Z → 2018-12-11T14:52:03Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 10th, 11:43–12:31 on the 11th.", "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 10th and 48 of 48 on the 11th.", "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 28180 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Lu’an, 2018: Tuesday 11 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": "2018-12-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-12-11", "confidence": "determinate" } ], "quote": "In Lu’an, Vināyaka Caturthī 2018 falls on Tuesday 11 December. Caturthī runs from 20:20 on Mon 10 Dec to 22:52 on Tue 11 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/vinayaka-chaturthi?on=2018-12-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-12-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36463, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "2018-12-11T22:52:03+08:00", "utc": "2018-12-11T14:52:03Z", "ms": 1544539923419.3313 }, "end": { "local": "2018-12-13T01:36:10+08:00", "utc": "2018-12-12T17:36:10Z", "ms": 1544636169968.1587 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-12-11T22:52:03+08:00", "utc": "2018-12-11T14:52:03Z", "ms": 1544539923419.3313 }, "end": { "local": "2018-12-13T01:36:10+08:00", "utc": "2018-12-12T17:36:10Z", "ms": 1544636169968.1587 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-12-12", "window": { "start": { "local": "2018-12-12T11:43:25+08:00", "utc": "2018-12-12T03:43:25Z", "ms": 1544586205039.078 }, "end": { "local": "2018-12-12T12:31:25+08:00", "utc": "2018-12-12T04:31:25Z", "ms": 1544589085039.078 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-12-13", "window": { "start": { "local": "2018-12-13T11:43:53+08:00", "utc": "2018-12-13T03:43:53Z", "ms": 1544672633449.3574 }, "end": { "local": "2018-12-13T12:31:53+08:00", "utc": "2018-12-13T04:31:53Z", "ms": 1544675513449.3574 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 22:52 on Tue 11 Dec to 01:36 on Thu 13 Dec.", "fact": "2018-12-11T14:52:03Z → 2018-12-12T17:36:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 12th, 11:44–12:32 on the 13th.", "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 12th and 0 of 48 on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 36463 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Lu’an, 2018: Wednesday 12 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami-margashirsha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (2nd) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-12-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-12-12", "confidence": "determinate" } ], "quote": "In Lu’an, Nāga Pañcamī (Mārgaśīrṣa) 2018 falls on Wednesday 12 December. Pañcamī runs from 22:52 on Tue 11 Dec to 01:36 on Thu 13 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-12-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26713, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2018-12-13T01:36:10+08:00", "utc": "2018-12-12T17:36:10Z", "ms": 1544636169968.1587 }, "end": { "local": "2018-12-14T04:19:09+08:00", "utc": "2018-12-13T20:19:09Z", "ms": 1544732349232.6333 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-12-13T01:36:10+08:00", "utc": "2018-12-12T17:36:10Z", "ms": 1544636169968.1587 }, "end": { "local": "2018-12-14T04:19:09+08:00", "utc": "2018-12-13T20:19:09Z", "ms": 1544732349232.6333 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-12-13", "window": { "start": { "local": "2018-12-13T11:43:53+08:00", "utc": "2018-12-13T03:43:53Z", "ms": 1544672633449.3574 }, "end": { "local": "2018-12-13T12:31:53+08:00", "utc": "2018-12-13T04:31:53Z", "ms": 1544675513449.3574 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-12-14", "window": { "start": { "local": "2018-12-14T11:44:22+08:00", "utc": "2018-12-14T03:44:22Z", "ms": 1544759062172.0562 }, "end": { "local": "2018-12-14T12:32:22+08:00", "utc": "2018-12-14T04:32:22Z", "ms": 1544761942172.0562 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 01:36 on Thu 13 Dec to 04:19 on Fri 14 Dec.", "fact": "2018-12-12T17:36:10Z → 2018-12-13T20:19:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 13th, 11:44–12:32 on the 14th.", "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 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 26713 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Lu’an, 2018: Thursday 13 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "champa-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "not_evaluated": "The row calls the day special with Śatabhiṣaj nakṣatra, Vyatīpāta yoga and a Sunday; none is tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-12-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-12-13", "confidence": "determinate" } ], "quote": "In Lu’an, Campā Ṣaṣṭhī 2018 falls on Thursday 13 December. Ṣaṣṭhī runs from 01:36 on Thu 13 Dec to 04:19 on Fri 14 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-12-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26713, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "2018-12-13T01:36:10+08:00", "utc": "2018-12-12T17:36:10Z", "ms": 1544636169968.1587 }, "end": { "local": "2018-12-14T04:19:09+08:00", "utc": "2018-12-13T20:19:09Z", "ms": 1544732349232.6333 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-12-13T01:36:10+08:00", "utc": "2018-12-12T17:36:10Z", "ms": 1544636169968.1587 }, "end": { "local": "2018-12-14T04:19:09+08:00", "utc": "2018-12-13T20:19:09Z", "ms": 1544732349232.6333 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-12-13", "window": { "start": { "local": "2018-12-13T11:43:53+08:00", "utc": "2018-12-13T03:43:53Z", "ms": 1544672633449.3574 }, "end": { "local": "2018-12-13T12:31:53+08:00", "utc": "2018-12-13T04:31:53Z", "ms": 1544675513449.3574 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-12-14", "window": { "start": { "local": "2018-12-14T11:44:22+08:00", "utc": "2018-12-14T03:44:22Z", "ms": 1544759062172.0562 }, "end": { "local": "2018-12-14T12:32:22+08:00", "utc": "2018-12-14T04:32:22Z", "ms": 1544761942172.0562 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 01:36 on Thu 13 Dec to 04:19 on Fri 14 Dec.", "fact": "2018-12-12T17:36:10Z → 2018-12-13T20:19:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 13th, 11:44–12:32 on the 14th.", "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 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 26713 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Lu’an, 2018: Thursday 13 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-12-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-12-13", "confidence": "determinate" } ], "quote": "In Lu’an, Skanda Ṣaṣṭhī 2018 falls on Thursday 13 December. Ṣaṣṭhī runs from 01:36 on Thu 13 Dec to 04:19 on Fri 14 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-12-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17920, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "2018-12-14T04:19:09+08:00", "utc": "2018-12-13T20:19:09Z", "ms": 1544732349232.6333 }, "end": { "local": "2018-12-15T06:46:12+08:00", "utc": "2018-12-14T22:46:12Z", "ms": 1544827571560.4277 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-12-14T04:19:09+08:00", "utc": "2018-12-13T20:19:09Z", "ms": 1544732349232.6333 }, "end": { "local": "2018-12-15T06:46:12+08:00", "utc": "2018-12-14T22:46:12Z", "ms": 1544827571560.4277 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-12-14", "window": { "start": { "local": "2018-12-14T11:44:22+08:00", "utc": "2018-12-14T03:44:22Z", "ms": 1544759062172.0562 }, "end": { "local": "2018-12-14T12:32:22+08:00", "utc": "2018-12-14T04:32:22Z", "ms": 1544761942172.0562 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-12-15", "window": { "start": { "local": "2018-12-15T11:44:51+08:00", "utc": "2018-12-15T03:44:51Z", "ms": 1544845491173.7822 }, "end": { "local": "2018-12-15T12:32:51+08:00", "utc": "2018-12-15T04:32:51Z", "ms": 1544848371173.7822 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 04:19 on Fri 14 Dec to 06:46 on Sat 15 Dec.", "fact": "2018-12-13T20:19:09Z → 2018-12-14T22:46:12Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 14th, 11:45–12:33 on the 15th.", "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 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 17920 s" }, { "step": "ruling", "text": "Mitra Saptamī, Lu’an, 2018: Friday 14 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mitra-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Mitra saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "2018-12-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-12-14", "confidence": "determinate" } ], "quote": "In Lu’an, Mitra Saptamī 2018 falls on Friday 14 December. Saptamī runs from 04:19 on Fri 14 Dec to 06:46 on Sat 15 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/ekadashi?on=2018-12-19", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-12-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10604, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "2018-12-18T10:27:11+08:00", "utc": "2018-12-18T02:27:11Z", "ms": 1545100031287.2249 }, "end": { "local": "2018-12-19T10:05:25+08:00", "utc": "2018-12-19T02:05:25Z", "ms": 1545185125345.9263 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-12-18T10:27:11+08:00", "utc": "2018-12-18T02:27:11Z", "ms": 1545100031287.2249 }, "end": { "local": "2018-12-19T10:05:25+08:00", "utc": "2018-12-19T02:05:25Z", "ms": 1545185125345.9263 } }, "kaala": "sunrise", "days": [ { "local_date": "2018-12-18", "window": { "start": { "local": "2018-12-18T07:08:07+08:00", "utc": "2018-12-17T23:08:07Z", "ms": 1545088086858.6804 }, "end": { "local": "2018-12-18T07:08:07+08:00", "utc": "2018-12-17T23:08:07Z", "ms": 1545088086858.6804 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "2018-12-19", "window": { "start": { "local": "2018-12-19T07:08:41+08:00", "utc": "2018-12-18T23:08:41Z", "ms": 1545174521213.143 }, "end": { "local": "2018-12-19T07:08:41+08:00", "utc": "2018-12-18T23:08:41Z", "ms": 1545174521213.143 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:27 on Tue 18 Dec to 10:05 on Wed 19 Dec.", "fact": "2018-12-18T02:27:11Z → 2018-12-19T02:05:25Z" }, { "step": "kaala", "text": "Sunrise is at 07:08 on the 18th and 07:09 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 10604 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Lu’an, 2018: Wednesday 19 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": "2018-12-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-12-19", "confidence": "determinate" } ], "quote": "In Lu’an, Mokṣadā Ekādaśī 2018 falls on Wednesday 19 December. Ekādaśī runs from 10:27 on Tue 18 Dec to 10:05 on Wed 19 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/ekadashi?on=2018-12-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-12-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6084, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "2018-12-19T10:05:25+08:00", "utc": "2018-12-19T02:05:25Z", "ms": 1545185125345.9263 }, "end": { "local": "2018-12-20T08:56:08+08:00", "utc": "2018-12-20T00:56:08Z", "ms": 1545267367620.2102 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-12-19T10:05:25+08:00", "utc": "2018-12-19T02:05:25Z", "ms": 1545185125345.9263 }, "end": { "local": "2018-12-20T08:56:08+08:00", "utc": "2018-12-20T00:56:08Z", "ms": 1545267367620.2102 } }, "kaala": "madhyahna", "days": [ { "local_date": "2018-12-19", "window": { "start": { "local": "2018-12-19T11:46:49+08:00", "utc": "2018-12-19T03:46:49Z", "ms": 1545191209305.9219 }, "end": { "local": "2018-12-19T12:34:49+08:00", "utc": "2018-12-19T04:34:49Z", "ms": 1545194089305.9219 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "2018-12-20", "window": { "start": { "local": "2018-12-20T11:47:19+08:00", "utc": "2018-12-20T03:47:19Z", "ms": 1545277639206.852 }, "end": { "local": "2018-12-20T12:35:19+08:00", "utc": "2018-12-20T04:35:19Z", "ms": 1545280519206.852 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 10:05 on Wed 19 Dec to 08:56 on Thu 20 Dec.", "fact": "2018-12-19T02:05:25Z → 2018-12-20T00:56:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 19th, 11:47–12:35 on the 20th.", "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 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6084 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Lu’an, 2018: Wednesday 19 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": "2018-12-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-12-19", "confidence": "determinate" } ], "quote": "In Lu’an, Akhaṇḍa Dvādaśī 2018 falls on Wednesday 19 December. Dvādaśī runs from 10:05 on Wed 19 Dec to 08:56 on Thu 20 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/pradosha-vrata?on=2018-12-20", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-12-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29837, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "2018-12-20T08:56:08+08:00", "utc": "2018-12-20T00:56:08Z", "ms": 1545267367620.2102 }, "end": { "local": "2018-12-21T07:04:52+08:00", "utc": "2018-12-20T23:04:52Z", "ms": 1545347091859.143 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-12-20T08:56:08+08:00", "utc": "2018-12-20T00:56:08Z", "ms": 1545267367620.2102 }, "end": { "local": "2018-12-21T07:04:52+08:00", "utc": "2018-12-20T23:04:52Z", "ms": 1545347091859.143 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-12-20", "window": { "start": { "local": "2018-12-20T17:13:24+08:00", "utc": "2018-12-20T09:13:24Z", "ms": 1545297204135.06 }, "end": { "local": "2018-12-20T19:04:55+08:00", "utc": "2018-12-20T11:04:55Z", "ms": 1545303895053.1948 } }, "covered_min": 112, "window_min": 112, "qualifies": true }, { "local_date": "2018-12-21", "window": { "start": { "local": "2018-12-21T17:13:52+08:00", "utc": "2018-12-21T09:13:52Z", "ms": 1545383632362.2974 }, "end": { "local": "2018-12-21T19:05:24+08:00", "utc": "2018-12-21T11:05:24Z", "ms": 1545390323568.4753 } }, "covered_min": 0, "window_min": 112, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:56 on Thu 20 Dec to 07:05 on Fri 21 Dec.", "fact": "2018-12-20T00:56:08Z → 2018-12-20T23:04:52Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:13–19:05 on the 20th, 17:14–19:05 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 112 of 112 minutes on the 20th and 0 of 112 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 29837 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Lu’an, 2018: Thursday 20 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": "2018-12-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-12-20", "confidence": "determinate" } ], "quote": "In Lu’an, Śukla Pradoṣa Vrata 2018 falls on Thursday 20 December. Trayodaśī runs from 08:56 on Thu 20 Dec to 07:05 on Fri 21 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/pradosha-vrata?on=2018-12-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/lu-an/festivals/2018/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-12-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24162, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "2018-12-22T04:39:22+08:00", "utc": "2018-12-21T20:39:22Z", "ms": 1545424762159.9248 }, "end": { "local": "2018-12-23T01:48:35+08:00", "utc": "2018-12-22T17:48:35Z", "ms": 1545500914979.4106 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-12-22T04:39:22+08:00", "utc": "2018-12-21T20:39:22Z", "ms": 1545424762159.9248 }, "end": { "local": "2018-12-23T01:48:35+08:00", "utc": "2018-12-22T17:48:35Z", "ms": 1545500914979.4106 } }, "kaala": "pradosha", "days": [ { "local_date": "2018-12-21", "window": { "start": { "local": "2018-12-21T17:13:52+08:00", "utc": "2018-12-21T09:13:52Z", "ms": 1545383632362.2974 }, "end": { "local": "2018-12-21T19:05:24+08:00", "utc": "2018-12-21T11:05:24Z", "ms": 1545390323568.4753 } }, "covered_min": 0, "window_min": 112, "qualifies": false }, { "local_date": "2018-12-22", "window": { "start": { "local": "2018-12-22T17:14:22+08:00", "utc": "2018-12-22T09:14:22Z", "ms": 1545470062051.7268 }, "end": { "local": "2018-12-22T19:05:53+08:00", "utc": "2018-12-22T11:05:53Z", "ms": 1545476753166.3794 } }, "covered_min": 112, "window_min": 112, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 04:39 on Sat 22 Dec to 01:49 on Sun 23 Dec.", "fact": "2018-12-21T20:39:22Z → 2018-12-22T17:48:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:14–19:05 on the 21st, 17:14–19:06 on the 22nd.", "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 112 minutes on the 21st and 112 of 112 on the 22nd.", "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 24162 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Lu’an, 2018: Saturday 22 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": "2018-12-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-12-22", "confidence": "determinate" } ], "quote": "In Lu’an, Dattātreyotpatti (Datta Jayanti) 2018 falls on Saturday 22 December. Pūrṇimā runs from 04:39 on Sat 22 Dec to 01:49 on Sun 23 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/lu-an/festivals/2018/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": "/lu-an/festivals/2018/sankashta-chaturthi?on=2018-12-25", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "1802206", "year": 2018, "local_date": "2018-12-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14046, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "2018-12-25T16:17:36+08:00", "utc": "2018-12-25T08:17:36Z", "ms": 1545725855673.9705 }, "end": { "local": "2018-12-26T13:16:49+08:00", "utc": "2018-12-26T05:16:49Z", "ms": 1545801409141.9246 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "2018-12-25T16:17:36+08:00", "utc": "2018-12-25T08:17:36Z", "ms": 1545725855673.9705 }, "end": { "local": "2018-12-26T13:16:49+08:00", "utc": "2018-12-26T05:16:49Z", "ms": 1545801409141.9246 } }, "kaala": "moonrise", "days": [ { "local_date": "2018-12-25", "window": { "start": { "local": "2018-12-25T20:11:41+08:00", "utc": "2018-12-25T12:11:41Z", "ms": 1545739901221.029 }, "end": { "local": "2018-12-25T20:11:41+08:00", "utc": "2018-12-25T12:11:41Z", "ms": 1545739901221.029 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "2018-12-26", "window": { "start": { "local": "2018-12-26T21:20:06+08:00", "utc": "2018-12-26T13:20:06Z", "ms": 1545830406058.563 }, "end": { "local": "2018-12-26T21:20:06+08:00", "utc": "2018-12-26T13:20:06Z", "ms": 1545830406058.563 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:18 on Tue 25 Dec to 13:17 on Wed 26 Dec.", "fact": "2018-12-25T08:17:36Z → 2018-12-26T05:16:49Z" }, { "step": "kaala", "text": "Moonrise is at 20:12 on the 25th and 21:20 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 25th and is not on the 26th.", "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 14046 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Lu’an, 2018: Tuesday 25 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": "2018-12-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "2018-12-25", "confidence": "determinate" } ], "quote": "In Lu’an, Saṅkaṣṭa Caturthī 2018 falls on Tuesday 25 December. Caturthī runs from 16:18 on Tue 25 Dec to 13:17 on Wed 26 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/lu-an/festivals/2018/sankashta-chaturthi?on=2018-12-25", "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" } }