Ruling · Vyāsa Pūjā · 1921

Wednesday 20 July

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 4 min 47 s away. Say “contested”.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two mornings

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

Morning of Tuesday 19 July

Pūrṇimā holds for 124 of 175 minutes of the first three muhūrtas after sunrise, not all of it. Not taken.

05:07 sunrisethree muhūrtas on 08:02
Pūrṇimā begins 05:57:35
04:4305:0705:3105:5506:1906:4307:0707:3107:5508:19

124 of 175 minutes covered, the last 124

Morning of Wednesday 20 July

Taken. The only morning Pūrṇimā reaches.

05:08 sunrisethree muhūrtas on 08:03
Pūrṇimā ends 08:07:19
04:4405:0805:3205:5606:2006:4407:0807:3207:5608:20

174 of 174 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 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

    The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:07–08:02 on the 19th, 05:08–08:03 on the 20th.

    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 124 of 175 minutes on the 19th and 174 of 174 on the 20th.

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

  4. 04

    Tie-break

    Only one morning qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 287 s < 300 s

  5. 05

    Ruling

    Vyāsa Pūjā, Baoding, 1921: Wednesday 20 July.

    confidence: boundary (margin)

Say it like this

In Baoding, Vyāsa Pūjā 1921 falls on Wednesday 20 July. Pūrṇimā runs from 05:58 on Tue 19 Jul to 08:07 on Wed 20 Jul and covers all of the first three muhūrtas after sunrise that morning. It is 4 min 47 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1921/vyasa-puja · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 20 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 20 Jul
compat-drikpanchangComparison profileWed 20 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/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 18thCoveredSunrise 20thCoveredRuled
Los Angeles13:58 → 16:0704:540 min04:560 min19 Jul
Chicago16:58 → 19:0705:310 min05:330 min19 Jul
Jersey City17:58 → 20:0705:400 min05:420 min19 Jul
Port of Spain17:58 → 20:0705:520 min05:520 min19 Jul
London22:58 → 01:0705:040 min05:060 min19 Jul
Durban23:58 → 02:0706:490 min06:480 min19 Jul
Dubai01:58 → 04:0705:390 min05:400 min19 Jul
Delhi03:28 → 05:3705:340 min05:352 min19 Jul
Kolkata03:28 → 05:3705:020 min05:0335 min19 Jul
Singapore04:58 → 07:0706:050 min06:0562 min19 Jul
Sydney07:58 → 10:0706:570 min06:56122 min20 Jul
Suva09:58 → 12:0706:380 min06:38134 min20 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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