Ruling · Buddha Pūrṇimā (Vaiśākhī Pūrṇimā) · 2087

Saturday 17 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 528 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 Friday 16 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 Saturday 17 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 21:27 on Fri 16 May to 23:57 on Sat 17 May.

    2087-05-16T13:26:59Z → 2087-05-17T15:56:34Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 16th, 11:51–12:39 on the 17th.

    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 16th and 48 of 48 on the 17th.

    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 31669 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Baoding, 2087: Saturday 17 May.

    confidence: determinate

Say it like this

In Baoding, Buddha Pūrṇimā (Vesak) 2087 falls on Saturday 17 May. Pūrṇimā runs from 21:27 on Fri 16 May to 23:57 on Sat 17 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2087/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 17 May
Ahargaṇa, classicalDisc centre, no refractionSat 17 May
compat-drikpanchangComparison profileSat 17 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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles06:27 → 08:5712:2648 min12:260 min16 May
Chicago08:27 → 10:5712:2448 min12:240 min16 May
Jersey City09:27 → 11:5712:2948 min12:290 min16 May
Port of Spain09:27 → 11:5711:3948 min11:3918 min16 May
London14:27 → 16:5712:340 min12:3448 min17 May
Durban15:27 → 17:5711:290 min11:2948 min17 May
Dubai17:27 → 19:5711:520 min11:5248 min17 May
Delhi18:57 → 21:2711:540 min11:5448 min17 May
Kolkata18:57 → 21:2711:090 min11:0948 min17 May
Singapore21:27 → 23:5712:370 min12:3748 min17 May
Sydney23:27 → 01:5711:280 min11:2848 min17 May
Suva01:27 → 03:5711:390 min11:3948 min17 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

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