Ruling · Buddha Pūrṇimā · 1947

Monday 5 May

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 12 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 Sunday 4 May

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 12:13  13:01 madhyāhna ends
Pūrṇimā begins 13:13:07
11:2511:4912:1312:3713:0113:2513:49

0 of 48 minutes covered

Midday of Monday 5 May

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 12:13  13:01 madhyāhna ends
11:2511:4912:1312:3713:0113:2513:49

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 13:13 on Sun 4 May to 13:53 on Mon 5 May.

    1947-05-04T04:13:07Z → 1947-05-05T04:53:13Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:13–13:01 on the 4th, 12:13–13:01 on the 5th.

    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 4th and 48 of 48 on the 5th.

    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 712 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Daqing, 1947: Monday 5 May.

    confidence: determinate

Say it like this

In Daqing, Buddha Pūrṇimā 1947 falls on Monday 5 May. Pūrṇimā runs from 13:13 on Sun 4 May to 13:53 on Mon 5 May and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1947/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 5 May
Ahargaṇa, classicalDisc centre, no refractionMon 5 May
compat-drikpanchangComparison profileMon 5 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 4thCoveredMadhyāhna 5thCoveredRuled
Los Angeles20:13 → 20:5311:2648 min11:260 min4 May
Chicago23:13 → 23:5312:2448 min12:240 min4 May
Jersey City00:13 → 00:5312:2948 min12:290 min4 May
Port of Spain00:13 → 00:5311:3948 min11:390 min4 May
London06:13 → 06:5313:3448 min13:340 min4 May
Durban06:13 → 06:5311:2948 min11:280 min4 May
Dubai08:13 → 08:5311:5248 min11:520 min4 May
Delhi09:43 → 10:2311:5448 min11:540 min4 May
Kolkata09:43 → 10:2311:1048 min11:090 min4 May
Singapore11:43 → 12:2312:0748 min12:0716 min4 May
Sydney14:13 → 14:5311:280 min11:2848 min5 May
Suva16:13 → 16:5311:390 min11:3948 min5 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

About Ahargaṇa