Ruling · Buddha Pūrṇimā · 1925

Friday 8 May

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 287 minutes.

Decide it for

TehranDelhiKolkataSingaporeSydneyJersey City

35°42′ N 51°25′ E · Asia/Tehran · GeoNames 112931

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Thursday 7 May

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:32  12:20 madhyāhna ends
10:4411:0811:3211:5612:2012:4413:08

0 of 48 minutes covered

Midday of Friday 8 May

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:32  12:20 madhyāhna ends
10:4411:0811:3211:5612:2012:4413:08

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 19:32 on Thu 7 May to 17:07 on Fri 8 May.

    1925-05-07T16:07:29Z → 1925-05-08T13:42:27Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 7th, 11:32–12:20 on the 8th.

    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 7th and 48 of 48 on the 8th.

    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 17248 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Tehran, 1925: Friday 8 May.

    confidence: determinate

Say it like this

In Tehran, Buddha Pūrṇimā 1925 falls on Friday 8 May. Pūrṇimā runs from 19:32 on Thu 7 May to 17:07 on Fri 8 May and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/1925/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 8 May
Ahargaṇa, classicalDisc centre, no refractionFri 8 May
compat-drikpanchangComparison profileFri 8 May
No institution has a recorded ruling for Tehran.

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 7thCoveredMadhyāhna 8thCoveredRuled
Los Angeles08:07 → 05:4211:2648 min11:260 min7 May
Chicago11:07 → 08:4212:2348 min12:230 min7 May
Jersey City12:07 → 09:4212:2948 min12:290 min7 May
Port of Spain12:07 → 09:4211:3919 min11:390 min7 May
London17:07 → 14:4212:340 min12:3348 min8 May
Durban18:07 → 15:4211:280 min11:2848 min8 May
Dubai20:07 → 17:4211:510 min11:5148 min8 May
Delhi21:37 → 19:1211:540 min11:5448 min8 May
Kolkata21:37 → 19:1211:090 min11:0948 min8 May
Singapore23:07 → 20:4211:370 min11:3748 min8 May
Sydney02:07 → 23:4211:280 min11:2748 min8 May
Suva04:07 → 01:4211:390 min11:3948 min8 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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