Ruling · Buddha Pūrṇimā (Vaiśākhī Pūrṇimā) · 1982

Friday 7 May

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 148 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

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

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Friday 7 May

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:13  12:01 madhyāhna ends
10:2510:4911:1311:3712:0112:2512:49

48 of 48 minutes covered

Midday of Saturday 8 May

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:13  12:01 madhyāhna ends
10:2510:4911:1311:3712:0112:2512:49

0 of 48 minutes covered

Pūrṇimā presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 07:18 on Fri 7 May to 08:45 on Sat 8 May.

    1982-05-06T23:18:16Z → 1982-05-08T00:44:40Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 7th, 11:13–12:01 on the 8th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.

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

  4. 04

    Tie-break

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

    priority: unstated → only-day · margin 8894 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Daqing, 1982: Friday 7 May.

    confidence: determinate

Say it like this

In Daqing, Buddha Pūrṇimā (Vesak) 1982 falls on Friday 7 May. Pūrṇimā runs from 07:18 on Fri 7 May to 08:45 on Sat 8 May and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1982/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 7 May
Ahargaṇa, classicalDisc centre, no refractionFri 7 May
compat-drikpanchangComparison profileFri 7 May
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/buddha-purnima · ruleset 2026.3-draft

Month
Vaiśākha, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 102

“S 15 Sampat gauri vrata (paraviddha), Phuladola (Bengal & Orissa) (paraviddha), Gandhesvari puja (Bengal) (purvaviddha), Buddha purnima, Vaisakhi purnima.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePūrṇimāMadhyāhna 6thCoveredMadhyāhna 8thCoveredRuled
Los Angeles16:18 → 17:4512:260 min12:260 min7 May
Chicago18:18 → 19:4512:240 min12:230 min7 May
Jersey City19:18 → 20:4512:290 min12:290 min7 May
Port of Spain19:18 → 20:4511:390 min11:390 min7 May
London00:18 → 01:4512:340 min12:330 min7 May
Durban01:18 → 02:4511:280 min11:280 min7 May
Dubai03:18 → 04:4511:520 min11:510 min7 May
Delhi04:48 → 06:1511:540 min11:540 min7 May
Kolkata04:48 → 06:1511:090 min11:090 min7 May
Singapore07:18 → 08:4512:370 min12:370 min7 May
Sydney09:18 → 10:4511:280 min11:270 min7 May
Suva11:18 → 12:4511:390 min11:3948 min7 May
Profile · tradition
pac-rp@2026.1 · smarta
Rule
buddha-purnima@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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