Ruling · Buddha Pūrṇimā (Vaiśākhī Pūrṇimā) · 2002

Sunday 26 May

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 470 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 Saturday 25 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

Midday of Sunday 26 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

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

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 22:17 on Sat 25 May to 19:51 on Sun 26 May.

    2002-05-25T14:16:55Z → 2002-05-26T11:51:15Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 25th, 11:13–12:01 on the 26th.

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

  3. 03

    Rule

    Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 25th and 48 of 48 on the 26th.

    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 28200 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Daqing, 2002: Sunday 26 May.

    confidence: determinate

Say it like this

In Daqing, Buddha Pūrṇimā (Vesak) 2002 falls on Sunday 26 May. Pūrṇimā runs from 22:17 on Sat 25 May to 19:51 on Sun 26 May and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2002/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 26 May
Ahargaṇa, classicalDisc centre, no refractionSun 26 May
compat-drikpanchangComparison profileSun 26 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 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles07:17 → 04:5112:2648 min12:260 min25 May
Chicago09:17 → 06:5112:2448 min12:240 min25 May
Jersey City10:17 → 07:5112:2948 min12:300 min25 May
Port of Spain10:17 → 07:5111:3948 min11:390 min25 May
London15:17 → 12:5112:340 min12:3417 min26 May
Durban16:17 → 13:5111:290 min11:2948 min26 May
Dubai18:17 → 15:5111:520 min11:5248 min26 May
Delhi19:47 → 17:2111:540 min11:5448 min26 May
Kolkata19:47 → 17:2111:090 min11:1048 min26 May
Singapore22:17 → 19:5112:370 min12:3848 min26 May
Sydney00:17 → 21:5111:280 min11:2848 min26 May
Suva02:17 → 23:5111:390 min11:3948 min26 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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