Ruling · Buddha Pūrṇimā (Vaiśākhī Pūrṇimā) · 1989

Saturday 20 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 575 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 Saturday 20 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 Sunday 21 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 01:53 on Sat 20 May to 03:16 on Sun 21 May.

    1989-05-19T16:52:38Z → 1989-05-20T18:16:15Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:51–13:39 on the 20th, 12:51–13:39 on the 21st.

    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 20th and 0 of 48 on the 21st.

    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 34479 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Baoding, 1989: Saturday 20 May.

    confidence: determinate

Say it like this

In Baoding, Buddha Pūrṇimā (Vesak) 1989 falls on Saturday 20 May. Pūrṇimā runs from 01:53 on Sat 20 May to 03:16 on Sun 21 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1989/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 20 May
Ahargaṇa, classicalDisc centre, no refractionSat 20 May
compat-drikpanchangComparison profileSat 20 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles09:53 → 11:1612:2648 min12:260 min19 May
Chicago11:53 → 13:1612:2348 min12:2348 min19 May
Jersey City12:53 → 14:1612:2924 min12:2948 min20 May
Port of Spain12:53 → 14:1611:390 min11:3948 min20 May
London17:53 → 19:1612:330 min12:3348 min20 May
Durban18:53 → 20:1611:280 min11:2848 min20 May
Dubai20:53 → 22:1611:510 min11:5148 min20 May
Delhi22:23 → 23:4611:540 min11:5448 min20 May
Kolkata22:23 → 23:4611:090 min11:0948 min20 May
Singapore00:53 → 02:1612:370 min12:3748 min20 May
Sydney02:53 → 04:1611:270 min11:2748 min20 May
Suva04:53 → 06:1611:390 min11:3948 min20 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