Ruling · Kokilā Vrata · 2099

Thursday 2 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 156 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 1 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:50 sāyāhna beginssunset 19:48
16:2616:5017:1417:3818:0218:2618:5019:1419:3820:02

0 of 178 minutes covered

Late afternoon of Thursday 2 July

Taken. The only late afternoon Pūrṇimā reaches.

16:50 sāyāhna beginssunset 19:47
16:2616:5017:1417:3818:0218:2618:5019:1419:3820:02

178 of 178 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 22:38 on Wed 1 Jul to 22:23 on Thu 2 Jul.

    2099-07-01T14:38:28Z → 2099-07-02T14:23:07Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:50–19:48 on the 1st, 16:50–19:47 on the 2nd.

    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 178 minutes on the 1st and 178 of 178 on the 2nd.

    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 9340 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 2099: Thursday 2 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 2099 falls on Thursday 2 July. Pūrṇimā runs from 22:38 on Wed 1 Jul to 22:23 on Thu 2 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2099/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 2 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 2 Jul
compat-drikpanchangComparison profileThu 2 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 1stCoveredSāyāhna 2ndCoveredRuled
Los Angeles07:38 → 07:2317:16172 min17:160 min1 Jul
Chicago09:38 → 09:2317:28182 min17:280 min1 Jul
Jersey City10:38 → 10:2317:31180 min17:310 min1 Jul
Port of Spain10:38 → 10:2316:00153 min16:000 min1 Jul
London15:38 → 15:2318:02198 min18:020 min1 Jul
Durban16:38 → 16:2315:0529 min15:0578 min2 Jul
Dubai18:38 → 18:2316:2935 min16:29114 min2 Jul
Delhi20:08 → 19:5316:360 min16:36167 min2 Jul
Kolkata20:08 → 19:5315:440 min15:44162 min2 Jul
Singapore22:38 → 22:2316:480 min16:49146 min2 Jul
Sydney00:38 → 00:2314:580 min14:59119 min2 Jul
Suva02:38 → 02:2315:300 min15:30133 min2 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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