Ruling · Vyāsa Pūjā · 1927

Thursday 14 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 Thursday 14 July

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

04:00 sunrisethree muhūrtas on 07:06
Pūrṇimā begins 04:23:23
03:3604:2405:1206:0006:4807:36

162 of 186 minutes covered, the last 162

Morning of Friday 15 July

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

04:00 sunrisethree muhūrtas on 07:06
03:3604:2405:1206:0006:4807:36

0 of 186 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 04:23 on Thu 14 Jul to 03:22 on Fri 15 Jul.

    1927-07-13T20:23:24Z → 1927-07-14T19:22:17Z

  2. 02

    Kāla

    The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 04:00–07:06 on the 14th, 04:00–07:06 on the 15th.

    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 162 of 186 minutes on the 14th and 0 of 186 on the 15th.

    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 1433 s

  5. 05

    Ruling

    Vyāsa Pūjā, Daqing, 1927: Thursday 14 July.

    confidence: boundary (absent-unstated)

Say it like this

In Daqing, Vyāsa Pūjā 1927 falls on Thursday 14 July. Pūrṇimā runs from 04:23 on Thu 14 Jul to 03:22 on Fri 15 Jul, and reaches the first three muhūrtas after sunrise on neither day.

ahargana.org/daqing/festivals/1927/vyasa-puja · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 14 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 14 Jul
compat-drikpanchangComparison profileThu 14 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 13thCoveredSunrise 14thCoveredRuled
Los Angeles12:23 → 11:2204:510 min04:52171 min14 Jul
Chicago15:23 → 14:2205:270 min05:27179 min14 Jul
Jersey City16:23 → 15:2205:360 min05:36178 min14 Jul
Port of Spain16:23 → 15:2205:510 min05:51152 min14 Jul
London21:23 → 20:2204:570 min04:59195 min14 Jul
Durban22:23 → 21:2206:510 min06:51124 min14 Jul
Dubai00:23 → 23:2205:370 min05:37163 min14 Jul
Delhi01:53 → 00:5205:310 min05:32166 min14 Jul
Kolkata01:53 → 00:5205:000 min05:00161 min14 Jul
Singapore03:23 → 02:2206:050 min06:05146 min14 Jul
Sydney06:23 → 05:2206:590 min06:59121 min14 Jul
Suva08:23 → 07:2206:390 min06:3928 min14 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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