Ruling · Buddha Pūrṇimā · 1905

Thursday 18 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 174 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 18 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

Midday of Friday 19 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

Pūrṇimā presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 08:56 on Thu 18 May to 05:36 on Fri 19 May.

    1905-05-18T00:56:08Z → 1905-05-18T21:36:12Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 18th, 11:51–12:39 on the 19th.

    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 18th and 0 of 48 on the 19th.

    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 10469 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Baoding, 1905: Thursday 18 May.

    confidence: determinate

Say it like this

In Baoding, Buddha Pūrṇimā 1905 falls on Thursday 18 May. Pūrṇimā runs from 08:56 on Thu 18 May to 05:36 on Fri 19 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1905/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 18 May
Ahargaṇa, classicalDisc centre, no refractionThu 18 May
compat-drikpanchangComparison profileThu 18 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 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles16:56 → 13:3611:2548 min11:250 min18 May
Chicago18:56 → 15:3611:2348 min11:230 min18 May
Jersey City19:56 → 16:3611:2948 min11:290 min18 May
Port of Spain20:56 → 17:3611:3848 min11:380 min18 May
London00:56 → 21:3611:3348 min11:330 min18 May
Durban02:56 → 23:3611:2848 min11:280 min18 May
Dubai04:37 → 01:1711:3248 min11:320 min18 May
Delhi06:17 → 02:5711:4448 min11:440 min18 May
Kolkata06:17 → 02:5711:0048 min11:000 min18 May
Singapore07:51 → 04:3111:3248 min11:320 min18 May
Sydney10:56 → 07:3611:2748 min11:270 min18 May
Suva12:51 → 09:3111:330 min11:330 min19 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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