Ruling · Buddha Pūrṇimā (Vaiśākhī Pūrṇimā) · 1971

Monday 10 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 328 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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

The two middays

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

Midday of Sunday 9 May

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

0 of 48 minutes covered

Midday of Monday 10 May

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

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 18:07 on Sun 9 May to 19:24 on Mon 10 May.

    1971-05-09T10:07:20Z → 1971-05-10T11:23:32Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 9th, 11:51–12:39 on the 10th.

    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 9th and 48 of 48 on the 10th.

    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 19707 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Baoding, 1971: Monday 10 May.

    confidence: determinate

Say it like this

In Baoding, Buddha Pūrṇimā (Vesak) 1971 falls on Monday 10 May. Pūrṇimā runs from 18:07 on Sun 9 May to 19:24 on Mon 10 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1971/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 10 May
Ahargaṇa, classicalDisc centre, no refractionMon 10 May
compat-drikpanchangComparison profileMon 10 May
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/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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles03:07 → 04:2412:2648 min12:260 min9 May
Chicago05:07 → 06:2412:2348 min12:230 min9 May
Jersey City06:07 → 07:2412:2948 min12:290 min9 May
Port of Spain06:07 → 07:2411:3948 min11:390 min9 May
London11:07 → 12:2412:3348 min12:330 min9 May
Durban12:07 → 13:2411:289 min11:2848 min10 May
Dubai14:07 → 15:2411:510 min11:5148 min10 May
Delhi15:37 → 16:5411:540 min11:5448 min10 May
Kolkata15:37 → 16:5411:090 min11:0948 min10 May
Singapore17:37 → 18:5412:070 min12:0748 min10 May
Sydney20:07 → 21:2411:270 min11:2748 min10 May
Suva22:07 → 23:2411:390 min11:3948 min10 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