Ruling · Vyāsa Pūjā · 2065

Friday 17 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 Friday 17 July

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

04:04 sunrisethree muhūrtas on 07:09
Pūrṇimā begins 04:05:52
03:4004:2805:1606:0406:5207:40

183 of 185 minutes covered, the last 183

Morning of Saturday 18 July

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

04:06 sunrisethree muhūrtas on 07:10
03:4204:3005:1806:0606:5407:42

0 of 184 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 04:06 on Fri 17 Jul to 01:46 on Sat 18 Jul.

    2065-07-16T20:05:53Z → 2065-07-17T17:46:02Z

  2. 02

    Kāla

    The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 04:04–07:09 on the 17th, 04:06–07:10 on the 18th.

    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 183 of 185 minutes on the 17th and 0 of 184 on the 18th.

    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 83 s < 300 s

  5. 05

    Ruling

    Vyāsa Pūjā, Daqing, 2065: Friday 17 July.

    confidence: boundary (margin, absent-unstated)

Say it like this

In Daqing, Vyāsa Pūjā 2065 falls on Friday 17 July. Pūrṇimā runs from 04:06 on Fri 17 Jul to 01:46 on Sat 18 Jul, and reaches the first three muhūrtas after sunrise on neither day. It is 1 min 23 s from a threshold: treat the date as contested.

ahargana.org/daqing/festivals/2065/vyasa-puja · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 17 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 17 Jul
compat-drikpanchangComparison profileFri 17 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 16thCoveredSunrise 17thCoveredRuled
Los Angeles13:06 → 10:4605:540 min05:55170 min17 Jul
Chicago15:06 → 12:4605:310 min05:32178 min17 Jul
Jersey City16:06 → 13:4605:400 min05:41177 min17 Jul
Port of Spain16:06 → 13:4605:520 min05:52152 min17 Jul
London21:06 → 18:4605:030 min05:05193 min17 Jul
Durban22:06 → 19:4606:500 min06:50125 min17 Jul
Dubai00:06 → 21:4605:390 min05:40162 min17 Jul
Delhi01:36 → 23:1605:340 min05:35165 min17 Jul
Kolkata01:36 → 23:1605:020 min05:02160 min17 Jul
Singapore04:06 → 01:4607:060 min07:06146 min17 Jul
Sydney06:06 → 03:4606:580 min06:58122 min17 Jul
Suva08:06 → 05:4606:380 min06:3846 min17 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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