Ruling · Kokilā Vrata · 1933

Friday 7 July

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 4 min 33 s away. Say “contested”.

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 Thursday 6 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:49 sāyāhna beginssunset 19:46
16:2516:4917:1317:3718:0118:2518:4919:1319:3720:01

0 of 177 minutes covered

Late afternoon of Friday 7 July

Taken. The only late afternoon Pūrṇimā reaches.

16:49 sāyāhna beginssunset 19:46
Pūrṇimā ends 19:50:28
16:2516:4917:1317:3718:0118:2518:4919:1319:3720:01

177 of 177 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 23:32 on Thu 6 Jul to 19:50 on Fri 7 Jul.

    1933-07-06T15:32:25Z → 1933-07-07T11:50:29Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:49–19:46 on the 6th, 16:49–19:46 on the 7th.

    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 6th and 177 of 177 on the 7th.

    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 273 s < 300 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 1933: Friday 7 July.

    confidence: boundary (margin)

Say it like this

In Baoding, Kokilā Vrata 1933 falls on Friday 7 July. Pūrṇimā runs from 23:32 on Thu 6 Jul to 19:50 on Fri 7 Jul and covers all of sāyāhna that late afternoon. It is 4 min 33 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1933/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 7 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 7 Jul
compat-drikpanchangComparison profileFri 7 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 6thCoveredSāyāhna 7thCoveredRuled
Los Angeles07:32 → 03:5016:15172 min16:150 min6 Jul
Chicago10:32 → 06:5017:27181 min17:270 min6 Jul
Jersey City11:32 → 07:5017:30180 min17:300 min6 Jul
Port of Spain11:32 → 07:5016:00153 min16:000 min6 Jul
London16:32 → 12:5018:01197 min18:010 min6 Jul
Durban17:32 → 13:5015:050 min15:060 min6 Jul
Dubai19:32 → 15:5016:290 min16:290 min6 Jul
Delhi21:02 → 17:2016:360 min16:3645 min7 Jul
Kolkata21:02 → 17:2015:430 min15:4397 min7 Jul
Singapore22:52 → 19:1016:080 min16:09146 min7 Jul
Sydney01:32 → 21:5014:590 min14:59120 min7 Jul
Suva03:32 → 23:5015:300 min15:30133 min7 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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