Ruling · Kokilā Vrata · 1980

Sunday 27 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 440 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 Saturday 26 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:43 sāyāhna beginssunset 19:35
16:1916:4317:0717:3117:5518:1918:4319:0719:3119:55

0 of 172 minutes covered

Late afternoon of Sunday 27 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

Pūrṇimā presentSāyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 04:43 on Sun 27 Jul to 02:54 on Mon 28 Jul.

    1980-07-26T20:43:16Z → 1980-07-27T18:53:38Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:43–19:35 on the 26th, 16:42–19:34 on the 27th.

    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 172 minutes on the 26th and 172 of 172 on the 27th.

    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 26382 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 1980: Sunday 27 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 1980 falls on Sunday 27 July. Pūrṇimā runs from 04:43 on Sun 27 Jul to 02:54 on Mon 28 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1980/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 27 Jul
Ahargaṇa, classicalDisc centre, no refractionSun 27 Jul
compat-drikpanchangComparison profileSun 27 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 26thCoveredSāyāhna 27thCoveredRuled
Los Angeles13:43 → 11:5417:10168 min17:100 min26 Jul
Chicago15:43 → 13:5417:19175 min17:190 min26 Jul
Jersey City16:43 → 14:5417:23174 min17:230 min26 Jul
Port of Spain16:43 → 14:5416:00108 min15:590 min26 Jul
London21:43 → 19:5417:490 min17:48126 min27 Jul
Durban22:43 → 20:5415:130 min15:13127 min27 Jul
Dubai00:43 → 22:5416:260 min16:26160 min27 Jul
Delhi02:13 → 00:2416:320 min16:32163 min27 Jul
Kolkata02:13 → 00:2415:410 min15:41159 min27 Jul
Singapore04:13 → 02:2416:200 min16:20146 min27 Jul
Sydney06:43 → 04:5415:070 min15:08124 min27 Jul
Suva08:43 → 06:5415:350 min15:35135 min27 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

About Ahargaṇa