Ruling · Vyāsa Pūjā · 1942

Monday 27 July

Boundaryin Daqing, under the Rashtriya Panchang method. Pūrṇimā reaches the first three muhūrtas after sunrise on neither day and the rule does not say what then. Say “contested”.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two mornings

One ghaṭī is 24 minutes. The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas.

Morning of Monday 27 July

Taken. Pūrṇimā reaches neither morning; this is the day it falls on.

05:14 sunrisethree muhūrtas on 08:15
Pūrṇimā begins 07:37:53
04:5005:1405:3806:0206:2606:5007:1407:3808:0208:26

37 of 181 minutes covered, the last 37

Morning of Tuesday 28 July

Pūrṇimā is absent from the first three muhūrtas after sunrise. Not taken.

05:15 sunrisethree muhūrtas on 08:15
04:5105:1505:3906:0306:2706:5107:1507:3908:0308:27

0 of 181 minutes covered

Pūrṇimā presentThe first three muhūrtas after sunrise, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 07:38 on Mon 27 Jul to 04:14 on Tue 28 Jul.

    1942-07-26T22:37:54Z → 1942-07-27T19:13:38Z

  2. 02

    Kāla

    The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:14–08:15 on the 27th, 05:15–08:15 on the 28th.

    udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pūrṇimā must hold through the first three muhūrtas after sunrise. It covers 37 of 181 minutes on the 27th and 0 of 181 on the 28th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Neither morning qualifies. The day the tithi falls on is taken.

    priority: paraviddha → tithi-day · margin 2198 s

  5. 05

    Ruling

    Vyāsa Pūjā, Daqing, 1942: Monday 27 July.

    confidence: boundary (absent-unstated)

Say it like this

In Daqing, Vyāsa Pūjā 1942 falls on Monday 27 July. Pūrṇimā runs from 07:38 on Mon 27 Jul to 04:14 on Tue 28 Jul, and reaches the first three muhūrtas after sunrise on neither day.

ahargana.org/daqing/festivals/1942/vyasa-puja · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 27 Jul
Ahargaṇa, classicalDisc centre, no refractionMon 27 Jul
compat-drikpanchangComparison profileMon 27 Jul
No institution has a recorded ruling for Daqing.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/vyasa-puja · ruleset 2026.3-draft

Month
Āṣāḍha, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
The first three muhūrtas after sunrise
Priority
Paraviddhā
Tie-break
Second day
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.

PlacePūrṇimāSunrise 26thCoveredSunrise 27thCoveredRuled
Los Angeles15:38 → 12:1406:000 min06:01167 min27 Jul
Chicago17:38 → 14:1405:380 min05:39175 min27 Jul
Jersey City18:38 → 15:1405:470 min05:48174 min27 Jul
Port of Spain19:38 → 16:1406:540 min06:54151 min27 Jul
London00:38 → 21:1406:150 min06:16188 min27 Jul
Durban00:38 → 21:1406:460 min06:45127 min27 Jul
Dubai02:38 → 23:1405:430 min05:44161 min27 Jul
Delhi04:08 → 00:4405:390 min05:39163 min27 Jul
Kolkata04:08 → 00:4405:050 min05:06159 min27 Jul
Singapore07:38 → 04:1408:060 min08:06146 min27 Jul
Sydney08:38 → 05:1406:530 min06:5218 min27 Jul
Suva10:38 → 07:1406:360 min06:360 min27 Jul
Profile · tradition
pac-rp@2026.1 · smarta
Rule
vyasa-puja@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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