Ruling · Kokilā Vrata · 1921

Tuesday 19 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 518 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 19 July

Taken. The only late afternoon Pūrṇimā reaches.

16:46 sāyāhna beginssunset 19:40
16:2216:4617:1017:3417:5818:2218:4619:1019:3419:58

175 of 175 minutes covered

Late afternoon of Wednesday 20 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:46 sāyāhna beginssunset 19:40
16:2216:4617:1017:3417:5818:2218:4619:1019:3419:58

0 of 174 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 05:58 on Tue 19 Jul to 08:07 on Wed 20 Jul.

    1921-07-18T21:57:35Z → 1921-07-20T00:07:20Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:46–19:40 on the 19th, 16:46–19:40 on the 20th.

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

  3. 03

    Rule

    Pūrṇimā must be present during sāyāhna. It covers 175 of 175 minutes on the 19th and 0 of 174 on the 20th.

    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 31091 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 1921: Tuesday 19 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 1921 falls on Tuesday 19 July. Pūrṇimā runs from 05:58 on Tue 19 Jul to 08:07 on Wed 20 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1921/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 19 Jul
Ahargaṇa, classicalDisc centre, no refractionTue 19 Jul
compat-drikpanchangComparison profileTue 19 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 18thCoveredSāyāhna 20thCoveredRuled
Los Angeles13:58 → 16:0716:13170 min16:130 min18 Jul
Chicago16:58 → 19:0717:24178 min17:230 min18 Jul
Jersey City17:58 → 20:0717:27147 min17:270 min19 Jul
Port of Spain17:58 → 20:0716:0035 min16:000 min19 Jul
London22:58 → 01:0717:550 min17:540 min19 Jul
Durban23:58 → 02:0715:100 min15:100 min19 Jul
Dubai01:58 → 04:0716:280 min16:280 min19 Jul
Delhi03:28 → 05:3716:350 min16:340 min19 Jul
Kolkata03:28 → 05:3715:430 min15:430 min19 Jul
Singapore04:58 → 07:0715:500 min15:500 min19 Jul
Sydney07:58 → 10:0715:040 min15:040 min19 Jul
Suva09:58 → 12:0715:330 min15:330 min19 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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