Ruling · Caitrī Pūrṇimā · 1937

Sunday 25 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 511 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 Saturday 24 April

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

0 of 48 minutes covered

Midday of Sunday 25 April

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

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 21:11 on Sat 24 Apr to 23:24 on Sun 25 Apr.

    1937-04-24T13:11:25Z → 1937-04-25T15:23:31Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 24th, 11:53–12:41 on the 25th.

    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 24th and 48 of 48 on the 25th.

    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: paraviddha → only-day · margin 30643 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1937: Sunday 25 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1937 falls on Sunday 25 April. Pūrṇimā runs from 21:11 on Sat 24 Apr to 23:24 on Sun 25 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1937/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 25 Apr
Ahargaṇa, classicalDisc centre, no refractionSun 25 Apr
compat-drikpanchangComparison profileSun 25 Apr
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/chaitri-purnima · ruleset 2026.3-draft

Month
Caitra, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 102

“S 15 Caitri purnima (paraviddha), Hanumat jayanti, Oli ending (Jain).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePūrṇimāMadhyāhna 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles05:11 → 07:2411:2748 min11:270 min24 Apr
Chicago07:11 → 10:2411:2548 min12:250 min24 Apr
Jersey City08:11 → 11:2411:3148 min12:310 min24 Apr
Port of Spain09:11 → 11:2411:4048 min11:400 min24 Apr
London14:11 → 16:2412:350 min12:3548 min25 Apr
Durban15:11 → 17:2411:300 min11:3048 min25 Apr
Dubai17:11 → 19:2411:530 min11:5348 min25 Apr
Delhi18:41 → 20:5411:550 min11:5548 min25 Apr
Kolkata18:41 → 20:5411:110 min11:1148 min25 Apr
Singapore20:31 → 22:4411:590 min11:5948 min25 Apr
Sydney23:11 → 01:2411:290 min11:2948 min25 Apr
Suva01:11 → 03:2411:400 min11:4048 min25 Apr
Profile · tradition
pac-rp@2026.1 · smarta
Rule
chaitri-purnima@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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