Ruling · Buddha Pūrṇimā (Vaiśākhī Pūrṇimā) · 1978

Monday 22 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 518 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 21 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 22 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 00:17 on Mon 22 May to 21:17 on Mon 22 May.

    1978-05-21T16:17:10Z → 1978-05-22T13:16:41Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 21st, 11:51–12:39 on the 22nd.

    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 21st and 48 of 48 on the 22nd.

    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 31066 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Baoding, 1978: Monday 22 May.

    confidence: determinate

Say it like this

In Baoding, Buddha Pūrṇimā (Vesak) 1978 falls on Monday 22 May. Pūrṇimā runs from 00:17 on Mon 22 May to 21:17 on Mon 22 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1978/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 22 May
Ahargaṇa, classicalDisc centre, no refractionMon 22 May
compat-drikpanchangComparison profileMon 22 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 21stCoveredMadhyāhna 22ndCoveredRuled
Los Angeles09:17 → 06:1712:2648 min12:260 min21 May
Chicago11:17 → 08:1712:2348 min12:230 min21 May
Jersey City12:17 → 09:1712:2948 min12:290 min21 May
Port of Spain12:17 → 09:1711:399 min11:390 min21 May
London17:17 → 14:1712:330 min12:3348 min22 May
Durban18:17 → 15:1711:280 min11:2848 min22 May
Dubai20:17 → 17:1711:510 min11:5148 min22 May
Delhi21:47 → 18:4711:540 min11:5448 min22 May
Kolkata21:47 → 18:4711:090 min11:0948 min22 May
Singapore23:47 → 20:4712:070 min12:0748 min22 May
Sydney02:17 → 23:1711:270 min11:2848 min22 May
Suva04:17 → 01:1711:390 min11:3948 min22 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