Ruling · Kokilā Vrata · 1964

Friday 24 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 151 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 Thursday 23 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:44 sāyāhna beginssunset 19:37
16:2016:4417:0817:3217:5618:2018:4419:0819:3219:56

0 of 173 minutes covered

Late afternoon of Friday 24 July

Taken. The only late afternoon Pūrṇimā reaches.

16:44 sāyāhna beginssunset 19:37
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 22:08 on Thu 23 Jul to 23:58 on Fri 24 Jul.

    1964-07-23T14:08:01Z → 1964-07-24T15:57:46Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:44–19:37 on the 23rd, 16:44–19:37 on the 24th.

    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 173 minutes on the 23rd and 173 of 173 on the 24th.

    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 9040 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 1964: Friday 24 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 1964 falls on Friday 24 July. Pūrṇimā runs from 22:08 on Thu 23 Jul to 23:58 on Fri 24 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1964/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 24 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 24 Jul
compat-drikpanchangComparison profileFri 24 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 23rdCoveredSāyāhna 24thCoveredRuled
Los Angeles07:08 → 08:5817:12168 min17:110 min23 Jul
Chicago09:08 → 10:5817:21176 min17:210 min23 Jul
Jersey City10:08 → 11:5817:25175 min17:240 min23 Jul
Port of Spain10:08 → 11:5816:00152 min16:000 min23 Jul
London15:08 → 16:5817:52190 min17:510 min23 Jul
Durban16:08 → 17:5815:1270 min15:12126 min24 Jul
Dubai18:08 → 19:5816:2760 min16:27161 min24 Jul
Delhi19:38 → 21:2816:330 min16:33164 min24 Jul
Kolkata19:38 → 21:2815:420 min15:42159 min24 Jul
Singapore21:38 → 23:2816:200 min16:20146 min24 Jul
Sydney00:08 → 01:5815:060 min15:06123 min24 Jul
Suva02:08 → 03:5815:340 min15:35135 min24 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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