Ruling · Kokilā Vrata · 2073

Tuesday 18 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 188 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 18 July

Taken. The only late afternoon Pūrṇimā reaches.

16:46 sāyāhna beginssunset 19:41
16:2216:4617:1017:3417:5818:2218:4619:1019:3419:58

175 of 175 minutes covered

Late afternoon of Wednesday 19 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 13:38 on Tue 18 Jul to 13:05 on Wed 19 Jul.

    2073-07-18T05:38:23Z → 2073-07-19T05:05:25Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:46–19:41 on the 18th, 16:46–19:40 on the 19th.

    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 18th and 0 of 174 on the 19th.

    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 11273 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 2073: Tuesday 18 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 2073 falls on Tuesday 18 July. Pūrṇimā runs from 13:38 on Tue 18 Jul to 13:05 on Wed 19 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2073/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 18 Jul
Ahargaṇa, classicalDisc centre, no refractionTue 18 Jul
compat-drikpanchangComparison profileTue 18 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 19thCoveredRuled
Los Angeles22:38 → 22:0517:14169 min17:130 min18 Jul
Chicago00:38 → 00:0517:24178 min17:230 min18 Jul
Jersey City01:38 → 01:0517:27176 min17:270 min18 Jul
Port of Spain01:38 → 01:0516:01152 min16:010 min18 Jul
London06:38 → 06:0517:55192 min17:540 min18 Jul
Durban07:38 → 07:0515:11125 min15:110 min18 Jul
Dubai09:38 → 09:0516:28162 min16:280 min18 Jul
Delhi11:08 → 10:3516:35165 min16:350 min18 Jul
Kolkata11:08 → 10:3515:43160 min15:430 min18 Jul
Singapore13:38 → 13:0516:50146 min16:500 min18 Jul
Sydney15:38 → 15:0515:0588 min15:050 min18 Jul
Suva17:38 → 17:0515:349 min15:3491 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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