Ruling · Buddha Pūrṇimā (Vaiśākhī Pūrṇimā) · 1990

Wednesday 9 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 500 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 Wednesday 9 May

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 12:51  13:39 madhyāhna ends
12:0312:2712:5113:1513:3914:0314:27

48 of 48 minutes covered

Midday of Thursday 10 May

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 12:51  13:39 madhyāhna ends
12:0312:2712:5113:1513:3914:0314:27

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 02:09 on Wed 9 May to 04:31 on Thu 10 May.

    1990-05-08T17:08:39Z → 1990-05-09T19:30:46Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:51–13:39 on the 9th, 12:51–13:39 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 48 of 48 minutes on the 9th and 0 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 30003 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Baoding, 1990: Wednesday 9 May.

    confidence: determinate

Say it like this

In Baoding, Buddha Pūrṇimā (Vesak) 1990 falls on Wednesday 9 May. Pūrṇimā runs from 02:09 on Wed 9 May to 04:31 on Thu 10 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1990/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 9 May
Ahargaṇa, classicalDisc centre, no refractionWed 9 May
compat-drikpanchangComparison profileWed 9 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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles10:09 → 12:3112:2648 min12:265 min8 May
Chicago12:09 → 14:3112:2348 min12:2348 min8 May
Jersey City13:09 → 15:3112:298 min12:2948 min9 May
Port of Spain13:09 → 15:3111:390 min11:3948 min9 May
London18:09 → 20:3112:330 min12:3348 min9 May
Durban19:09 → 21:3111:280 min11:2848 min9 May
Dubai21:09 → 23:3111:510 min11:5148 min9 May
Delhi22:39 → 01:0111:540 min11:5448 min9 May
Kolkata22:39 → 01:0111:090 min11:0948 min9 May
Singapore01:09 → 03:3112:370 min12:3748 min9 May
Sydney03:09 → 05:3111:270 min11:2748 min9 May
Suva05:09 → 07:3111:390 min11:3948 min9 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