Ruling · Caitrī Pūrṇimā · 1933

Monday 10 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 534 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 9 April

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:56  12:44 madhyāhna ends
11:0811:3211:5612:2012:4413:0813:32

0 of 48 minutes covered

Midday of Monday 10 April

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:56  12:44 madhyāhna ends
11:0811:3211:5612:2012:4413:0813:32

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 00:22 on Mon 10 Apr to 21:38 on Mon 10 Apr.

    1933-04-09T16:22:18Z → 1933-04-10T13:37:33Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 9th, 11:56–12:44 on the 10th.

    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 9th and 48 of 48 on the 10th.

    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 32014 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1933: Monday 10 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1933 falls on Monday 10 April. Pūrṇimā runs from 00:22 on Mon 10 Apr to 21:38 on Mon 10 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1933/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 10 Apr
Ahargaṇa, classicalDisc centre, no refractionMon 10 Apr
compat-drikpanchangComparison profileMon 10 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles08:22 → 05:3811:3148 min11:310 min9 Apr
Chicago10:22 → 07:3811:2948 min11:280 min9 Apr
Jersey City11:22 → 08:3811:3448 min11:340 min9 Apr
Port of Spain12:22 → 09:3811:449 min11:440 min9 Apr
London17:22 → 14:3812:390 min12:3848 min10 Apr
Durban18:22 → 15:3811:330 min11:3348 min10 Apr
Dubai20:22 → 17:3811:570 min11:5648 min10 Apr
Delhi21:52 → 19:0811:590 min11:5948 min10 Apr
Kolkata21:52 → 19:0811:140 min11:1448 min10 Apr
Singapore23:42 → 20:5812:020 min12:0248 min10 Apr
Sydney02:22 → 23:3811:330 min11:3248 min10 Apr
Suva04:22 → 01:3811:440 min11:4448 min10 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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