Ruling · Kokilā Vrata · 1937

Friday 23 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 5 min 35 s.

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 22 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:45 sāyāhna beginssunset 19:38
Pūrṇimā begins 19:43:58
16:2116:4517:0917:3317:5718:2118:4519:0919:3319:57

0 of 174 minutes covered

Late afternoon of Friday 23 July

Taken. The only late afternoon Pūrṇimā reaches.

16:44 sāyāhna beginssunset 19:38
16:2016:4417:0817:3217:5618:2018:4419:0819:3219:56

173 of 173 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 19:44 on Thu 22 Jul to 20:45 on Fri 23 Jul.

    1937-07-22T11:43:58Z → 1937-07-23T12:45:29Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:45–19:38 on the 22nd, 16:44–19:38 on the 23rd.

    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 174 minutes on the 22nd and 173 of 173 on the 23rd.

    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 335 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 1937: Friday 23 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 1937 falls on Friday 23 July. Pūrṇimā runs from 19:44 on Thu 22 Jul to 20:45 on Fri 23 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1937/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 23 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 23 Jul
compat-drikpanchangComparison profileFri 23 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 22ndCoveredSāyāhna 23rdCoveredRuled
Los Angeles03:44 → 04:4516:12169 min16:120 min22 Jul
Chicago06:44 → 07:4517:22177 min17:210 min22 Jul
Jersey City07:44 → 08:4517:26176 min17:250 min22 Jul
Port of Spain07:44 → 08:4516:00152 min16:000 min22 Jul
London12:44 → 13:4517:53191 min17:520 min22 Jul
Durban13:44 → 14:4515:11126 min15:120 min22 Jul
Dubai15:44 → 16:4516:27161 min16:2719 min22 Jul
Delhi17:14 → 18:1516:34124 min16:33102 min22 Jul
Kolkata17:14 → 18:1515:4268 min15:42153 min23 Jul
Singapore19:04 → 20:0516:100 min16:10146 min23 Jul
Sydney21:44 → 22:4515:050 min15:06123 min23 Jul
Suva23:44 → 00:4515:340 min15:34134 min23 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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