Ruling · Kokilā Vrata · 1972

Tuesday 25 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 79 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 Tuesday 25 July

Taken. The only late afternoon Pūrṇimā reaches.

16:43 sāyāhna beginssunset 19:36
16:1916:4317:0717:3117:5518:1918:4319:0719:3119:55

173 of 173 minutes covered

Late afternoon of Wednesday 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

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

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 15:15 on Tue 25 Jul to 15:24 on Wed 26 Jul.

    1972-07-25T07:15:10Z → 1972-07-26T07:23:32Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:43–19:36 on the 25th, 16:43–19:35 on the 26th.

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

  3. 03

    Rule

    Pūrṇimā must be present during sāyāhna. It covers 173 of 173 minutes on the 25th and 0 of 172 on the 26th.

    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 4747 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 1972: Tuesday 25 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 1972 falls on Tuesday 25 July. Pūrṇimā runs from 15:15 on Tue 25 Jul to 15:24 on Wed 26 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1972/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 25 Jul
Ahargaṇa, classicalDisc centre, no refractionTue 25 Jul
compat-drikpanchangComparison profileTue 25 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 25thCoveredSāyāhna 26thCoveredRuled
Los Angeles00:15 → 00:2417:11168 min17:110 min25 Jul
Chicago02:15 → 02:2417:20176 min17:190 min25 Jul
Jersey City03:15 → 03:2417:24174 min17:230 min25 Jul
Port of Spain03:15 → 03:2416:00151 min16:000 min25 Jul
London08:15 → 08:2417:50189 min17:490 min25 Jul
Durban09:15 → 09:2415:12127 min15:130 min25 Jul
Dubai11:15 → 11:2416:26161 min16:260 min25 Jul
Delhi12:45 → 12:5416:33164 min16:320 min25 Jul
Kolkata12:45 → 12:5415:42159 min15:410 min25 Jul
Singapore14:45 → 14:5416:20146 min16:200 min25 Jul
Sydney17:15 → 17:2415:070 min15:07124 min26 Jul
Suva19:15 → 19:2415:350 min15:35135 min26 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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