Ruling · Caitrī Pūrṇimā · 1923

Sunday 1 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 503 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 31 March

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

0 of 48 minutes covered

Midday of Sunday 1 April

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

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 00:52 on Sun 1 Apr to 21:10 on Sun 1 Apr.

    1923-03-31T16:51:39Z → 1923-04-01T13:09:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 31st, 11:59–12:47 on the 1st.

    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 31st and 48 of 48 on the 1st.

    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 30169 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1923: Sunday 1 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1923 falls on Sunday 1 April. Pūrṇimā runs from 00:52 on Sun 1 Apr to 21:10 on Sun 1 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1923/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 1 Apr
Ahargaṇa, classicalDisc centre, no refractionSun 1 Apr
compat-drikpanchangComparison profileSun 1 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 31stCoveredMadhyāhna 1stCoveredRuled
Los Angeles08:52 → 05:1011:3448 min11:330 min31 Mar
Chicago10:52 → 07:1011:3148 min11:310 min31 Mar
Jersey City11:52 → 08:1011:3733 min11:370 min31 Mar
Port of Spain12:52 → 09:1011:470 min11:460 min1 Apr
London16:52 → 13:1011:420 min11:4148 min1 Apr
Durban18:52 → 15:1011:360 min11:3648 min1 Apr
Dubai20:52 → 17:1012:000 min11:5948 min1 Apr
Delhi22:22 → 18:4012:020 min12:0248 min1 Apr
Kolkata22:22 → 18:4011:170 min11:1748 min1 Apr
Singapore23:52 → 20:1011:450 min11:4548 min1 Apr
Sydney02:52 → 23:1011:360 min11:3548 min1 Apr
Suva04:52 → 01:1011:470 min11:4748 min1 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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