Ruling · Kokilā Vrata · 2083

Wednesday 28 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 312 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two late afternoons

One ghaṭī is 24 minutes. Sāyāhna is last 3 of 15 day muhūrtas.

Late afternoon of Wednesday 28 July

Taken. The only late afternoon Pūrṇimā reaches.

16:42 sāyāhna beginssunset 19:33
16:1816:4217:0617:3017:5418:1818:4219:0619:3019:54

171 of 171 minutes covered

Late afternoon of Thursday 29 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:41 sāyāhna beginssunset 19:32
16:1716:4117:0517:2917:5318:1718:4119:0519:2919:53

0 of 171 minutes covered

Pūrṇimā presentSāyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 11:30 on Wed 28 Jul to 09:02 on Thu 29 Jul.

    2083-07-28T03:30:01Z → 2083-07-29T01:02:09Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:42–19:33 on the 28th, 16:41–19:32 on the 29th.

    sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pūrṇimā must be present during sāyāhna. It covers 171 of 171 minutes on the 28th and 0 of 171 on the 29th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Only one late afternoon qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 18716 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 2083: Wednesday 28 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 2083 falls on Wednesday 28 July. Pūrṇimā runs from 11:30 on Wed 28 Jul to 09:02 on Thu 29 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2083/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 28 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 28 Jul
compat-drikpanchangComparison profileWed 28 Jul
No institution has a recorded ruling for Baoding.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/kokila-vrata · ruleset 2026.3-draft

Month
Āṣāḍha, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
Sāyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 102

“S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePūrṇimāSāyāhna 28thCoveredSāyāhna 29thCoveredRuled
Los Angeles20:30 → 18:0217:1052 min17:090 min28 Jul
Chicago22:30 → 20:0217:19164 min17:180 min28 Jul
Jersey City23:30 → 21:0217:23173 min17:220 min28 Jul
Port of Spain23:30 → 21:0216:00151 min16:000 min28 Jul
London04:30 → 02:0217:47187 min17:470 min28 Jul
Durban05:30 → 03:0215:14127 min15:140 min28 Jul
Dubai07:30 → 05:0216:26160 min16:260 min28 Jul
Delhi09:00 → 06:3216:32163 min16:320 min28 Jul
Kolkata09:00 → 06:3215:41159 min15:410 min28 Jul
Singapore11:30 → 09:0216:51146 min16:500 min28 Jul
Sydney13:30 → 11:0215:09124 min15:090 min28 Jul
Suva15:30 → 13:0215:36135 min15:360 min28 Jul
Profile · tradition
pac-rp@2026.1 · smarta
Rule
kokila-vrata@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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