Ruling · Kokilā Vrata · 2018

Friday 27 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 371 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 Thursday 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 Friday 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 01:46 on Fri 27 Jul to 04:20 on Sat 28 Jul.

    2018-07-26T17:46:28Z → 2018-07-27T20:20:21Z

  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 22286 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 2018: Friday 27 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 2018 falls on Friday 27 July. Pūrṇimā runs from 01:46 on Fri 27 Jul to 04:20 on Sat 28 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2018/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 27 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 27 Jul
compat-drikpanchangComparison profileFri 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 Angeles10:46 → 13:2017:11168 min17:100 min26 Jul
Chicago12:46 → 15:2017:20175 min17:190 min26 Jul
Jersey City13:46 → 16:2017:24174 min17:230 min26 Jul
Port of Spain13:46 → 16:2016:00151 min16:0021 min26 Jul
London18:46 → 21:2017:49131 min17:48188 min27 Jul
Durban19:46 → 22:2015:130 min15:13127 min27 Jul
Dubai21:46 → 00:2016:260 min16:26160 min27 Jul
Delhi23:16 → 01:5016:320 min16:32163 min27 Jul
Kolkata23:16 → 01:5015:410 min15:41159 min27 Jul
Singapore01:46 → 04:2016:500 min16:50146 min27 Jul
Sydney03:46 → 06:2015:070 min15:08124 min27 Jul
Suva05:46 → 08:2015:350 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

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