Ruling · Kokilā Vrata · 1978

Wednesday 19 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 104 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 19 July

Taken. The only late afternoon Pūrṇimā reaches.

16:46 sāyāhna beginssunset 19:40
16:2216:4617:1017:3417:5818:2218:4619:1019:3419:58

175 of 175 minutes covered

Late afternoon of Thursday 20 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:46 sāyāhna beginssunset 19:40
16:2216:4617:1017:3417:5818:2218:4619:1019:3419:58

0 of 174 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 15:02 on Wed 19 Jul to 11:05 on Thu 20 Jul.

    1978-07-19T07:01:44Z → 1978-07-20T03:04:49Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:46–19:40 on the 19th, 16:46–19:40 on the 20th.

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

  3. 03

    Rule

    Pūrṇimā must be present during sāyāhna. It covers 175 of 175 minutes on the 19th and 0 of 174 on the 20th.

    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 6251 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 1978: Wednesday 19 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 1978 falls on Wednesday 19 July. Pūrṇimā runs from 15:02 on Wed 19 Jul to 11:05 on Thu 20 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1978/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 19 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 19 Jul
compat-drikpanchangComparison profileWed 19 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 19thCoveredSāyāhna 20thCoveredRuled
Los Angeles00:02 → 20:0517:13169 min17:130 min19 Jul
Chicago02:02 → 22:0517:23178 min17:230 min19 Jul
Jersey City03:02 → 23:0517:27176 min17:270 min19 Jul
Port of Spain03:02 → 23:0516:00152 min16:000 min19 Jul
London08:02 → 04:0517:55192 min17:540 min19 Jul
Durban09:02 → 05:0515:10125 min15:110 min19 Jul
Dubai11:02 → 07:0516:28162 min16:280 min19 Jul
Delhi12:32 → 08:3516:34165 min16:340 min19 Jul
Kolkata12:32 → 08:3515:43160 min15:430 min19 Jul
Singapore14:32 → 10:3516:20146 min16:200 min19 Jul
Sydney17:02 → 13:0515:044 min15:050 min19 Jul
Suva19:02 → 15:0515:330 min15:340 min19 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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