Ruling · Buddha Pūrṇimā · 1907

Monday 27 May

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 571 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 Monday 27 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 Tuesday 28 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 01:43 on Mon 27 May to 22:18 on Mon 27 May.

    1907-05-26T17:42:32Z → 1907-05-27T14:17:38Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 27th, 11:13–12:01 on the 28th.

    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 27th and 0 of 48 on the 28th.

    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 34234 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Daqing, 1907: Monday 27 May.

    confidence: determinate

Say it like this

In Daqing, Buddha Pūrṇimā 1907 falls on Monday 27 May. Pūrṇimā runs from 01:43 on Mon 27 May to 22:18 on Mon 27 May and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1907/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 27 May
Ahargaṇa, classicalDisc centre, no refractionMon 27 May
compat-drikpanchangComparison profileMon 27 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 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles09:43 → 06:1811:2648 min11:260 min26 May
Chicago11:43 → 08:1811:2429 min11:240 min26 May
Jersey City12:43 → 09:1811:290 min11:290 min27 May
Port of Spain13:43 → 10:1811:390 min11:390 min27 May
London17:43 → 14:1811:340 min11:3448 min27 May
Durban19:43 → 16:1811:280 min11:2948 min27 May
Dubai21:24 → 17:5911:330 min11:3348 min27 May
Delhi23:13 → 19:4811:540 min11:5448 min27 May
Kolkata23:13 → 19:4811:090 min11:0948 min27 May
Singapore00:43 → 21:1811:370 min11:3748 min27 May
Sydney03:43 → 00:1811:280 min11:2848 min27 May
Suva05:38 → 02:1311:340 min11:3448 min27 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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