Ruling · Buddha Pūrṇimā · 1913

Tuesday 20 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 159 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 Monday 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

Midday of Tuesday 20 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 17:04 on Mon 19 May to 15:18 on Tue 20 May.

    1913-05-19T09:03:35Z → 1913-05-20T07:17:51Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 19th, 11:51–12:39 on the 20th.

    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 19th and 48 of 48 on the 20th.

    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 9549 s

  5. 05

    Ruling

    Buddha Pūrṇimā, Baoding, 1913: Tuesday 20 May.

    confidence: determinate

Say it like this

In Baoding, Buddha Pūrṇimā 1913 falls on Tuesday 20 May. Pūrṇimā runs from 17:04 on Mon 19 May to 15:18 on Tue 20 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1913/buddha-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 20 May
Ahargaṇa, classicalDisc centre, no refractionTue 20 May
compat-drikpanchangComparison profileTue 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 Angeles01:04 → 23:1811:2548 min11:260 min19 May
Chicago03:04 → 01:1811:2348 min11:230 min19 May
Jersey City04:04 → 02:1811:2948 min11:290 min19 May
Port of Spain05:04 → 03:1811:3848 min11:380 min19 May
London09:04 → 07:1811:3348 min11:330 min19 May
Durban11:04 → 09:1811:2848 min11:280 min19 May
Dubai12:45 → 10:5911:320 min11:320 min20 May
Delhi14:34 → 12:4811:540 min11:5448 min20 May
Kolkata14:34 → 12:4811:090 min11:0948 min20 May
Singapore16:04 → 14:1811:370 min11:3748 min20 May
Sydney19:04 → 17:1811:270 min11:2748 min20 May
Suva20:59 → 19:1311:330 min11:3448 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

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