Ruling · Kokilā Vrata · 1900

Thursday 12 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 98 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 11 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:53 sāyāhna beginssunset 19:50
16:2916:5317:1717:4118:0518:2918:5319:1719:4120:05

0 of 177 minutes covered

Late afternoon of Thursday 12 July

Taken. The only late afternoon Pūrṇimā reaches.

16:53 sāyāhna beginssunset 19:49
16:2916:5317:1717:4118:0518:2918:5319:1719:4120:05

176 of 176 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 23:25 on Wed 11 Jul to 21:27 on Thu 12 Jul.

    1900-07-11T15:19:52Z → 1900-07-12T13:21:54Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:53–19:50 on the 11th, 16:53–19:49 on the 12th.

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

  3. 03

    Rule

    Pūrṇimā must be present during sāyāhna. It covers 0 of 177 minutes on the 11th and 176 of 176 on the 12th.

    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 5865 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 1900: Thursday 12 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 1900 falls on Thursday 12 July. Pūrṇimā runs from 23:25 on Wed 11 Jul to 21:27 on Thu 12 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1900/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 12 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 12 Jul
compat-drikpanchangComparison profileThu 12 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 11thCoveredSāyāhna 12thCoveredRuled
Los Angeles07:20 → 05:2216:15171 min16:150 min11 Jul
Chicago09:20 → 07:2216:26180 min16:260 min11 Jul
Jersey City10:20 → 08:2216:29179 min16:290 min11 Jul
Port of Spain11:20 → 09:2216:00152 min16:000 min11 Jul
London15:20 → 13:2216:59196 min16:590 min11 Jul
Durban16:50 → 14:5214:370 min14:3714 min12 Jul
Dubai19:01 → 17:0316:100 min16:0953 min12 Jul
Delhi20:41 → 18:4316:260 min16:26137 min12 Jul
Kolkata20:41 → 18:4315:340 min15:34161 min12 Jul
Singapore22:15 → 20:1715:440 min15:44146 min12 Jul
Sydney01:20 → 23:2215:010 min15:01120 min12 Jul
Suva03:15 → 01:1715:260 min15:26133 min12 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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