Ruling · Buddha Pūrṇimā · 1951

Monday 21 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 66 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 Sunday 20 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 Monday 21 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 17:19 on Sun 20 May to 13:45 on Mon 21 May.

    1951-05-20T09:19:10Z → 1951-05-21T05:44:40Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 20th, 11:51–12:39 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 0 of 48 minutes on the 20th and 48 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 3951 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Baoding, 1951: Monday 21 May.

    confidence: determinate

Say it like this

In Baoding, Buddha Pūrṇimā 1951 falls on Monday 21 May. Pūrṇimā runs from 17:19 on Sun 20 May to 13:45 on Mon 21 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1951/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 21 May
Ahargaṇa, classicalDisc centre, no refractionMon 21 May
compat-drikpanchangComparison profileMon 21 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles02:19 → 22:4512:2648 min12:260 min20 May
Chicago04:19 → 00:4512:2348 min12:230 min20 May
Jersey City05:19 → 01:4512:2948 min12:290 min20 May
Port of Spain05:19 → 01:4511:3948 min11:390 min20 May
London10:19 → 06:4512:3348 min12:330 min20 May
Durban11:19 → 07:4511:2848 min11:280 min20 May
Dubai13:19 → 09:4511:510 min11:510 min21 May
Delhi14:49 → 11:1511:540 min11:540 min21 May
Kolkata14:49 → 11:1511:090 min11:096 min21 May
Singapore16:49 → 13:1512:070 min12:0748 min21 May
Sydney19:19 → 15:4511:270 min11:2748 min21 May
Suva21:19 → 17:4511:390 min11:3948 min21 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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