Ruling · Kokilā Vrata · 1950

Friday 28 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 138 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 Friday 28 July

Taken. The only late afternoon Pūrṇimā reaches.

16:42 sāyāhna beginssunset 19:34
16:1816:4217:0617:3017:5418:1818:4219:0619:3019:54

172 of 172 minutes covered

Late afternoon of Saturday 29 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:41 sāyāhna beginssunset 19:33
16:1716:4117:0517:2917:5318:1718:4119:0519:2919:53

0 of 171 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 14:24 on Fri 28 Jul to 12:18 on Sat 29 Jul.

    1950-07-28T06:24:24Z → 1950-07-29T04:17:36Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:42–19:34 on the 28th, 16:41–19:33 on the 29th.

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

  3. 03

    Rule

    Pūrṇimā must be present during sāyāhna. It covers 172 of 172 minutes on the 28th and 0 of 171 on the 29th.

    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 8252 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 1950: Friday 28 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 1950 falls on Friday 28 July. Pūrṇimā runs from 14:24 on Fri 28 Jul to 12:18 on Sat 29 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1950/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 28 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 28 Jul
compat-drikpanchangComparison profileFri 28 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 28thCoveredSāyāhna 29thCoveredRuled
Los Angeles23:24 → 21:1817:10167 min17:090 min28 Jul
Chicago01:24 → 23:1817:19175 min17:180 min28 Jul
Jersey City02:24 → 00:1817:23173 min17:220 min28 Jul
Port of Spain02:24 → 00:1815:59151 min15:590 min28 Jul
London07:24 → 05:1817:48188 min17:470 min28 Jul
Durban08:24 → 06:1815:13127 min15:140 min28 Jul
Dubai10:24 → 08:1816:26160 min16:250 min28 Jul
Delhi11:54 → 09:4816:32163 min16:310 min28 Jul
Kolkata11:54 → 09:4815:41159 min15:410 min28 Jul
Singapore13:54 → 11:4816:20146 min16:200 min28 Jul
Sydney16:24 → 14:1815:0847 min15:080 min28 Jul
Suva18:24 → 16:1815:350 min15:3542 min29 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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