Ruling · Buddha Pūrṇimā (Vaiśākhī Pūrṇimā) · 1999

Friday 30 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 485 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 Thursday 29 April

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

0 of 48 minutes covered

Midday of Friday 30 April

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

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 20:44 on Thu 29 Apr to 22:55 on Fri 30 Apr.

    1999-04-29T12:44:26Z → 1999-04-30T14:54:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 29th, 11:52–12:40 on the 30th.

    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 29th and 48 of 48 on the 30th.

    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 29072 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Baoding, 1999: Friday 30 April.

    confidence: determinate

Say it like this

In Baoding, Buddha Pūrṇimā (Vesak) 1999 falls on Friday 30 April. Pūrṇimā runs from 20:44 on Thu 29 Apr to 22:55 on Fri 30 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1999/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 30 Apr
Ahargaṇa, classicalDisc centre, no refractionFri 30 Apr
compat-drikpanchangComparison profileFri 30 Apr
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 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles05:44 → 07:5512:2748 min12:260 min29 Apr
Chicago07:44 → 09:5512:2448 min12:240 min29 Apr
Jersey City08:44 → 10:5512:3048 min12:300 min29 Apr
Port of Spain08:44 → 10:5511:4048 min11:390 min29 Apr
London13:44 → 15:5512:340 min12:3448 min30 Apr
Durban14:44 → 16:5511:290 min11:2948 min30 Apr
Dubai16:44 → 18:5511:520 min11:5248 min30 Apr
Delhi18:14 → 20:2511:550 min11:5548 min30 Apr
Kolkata18:14 → 20:2511:100 min11:1048 min30 Apr
Singapore20:44 → 22:5512:380 min12:3848 min30 Apr
Sydney22:44 → 00:5511:280 min11:2848 min30 Apr
Suva00:44 → 02:5511:400 min11:4048 min30 Apr
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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