Ruling · Caitrī Pūrṇimā · 1928

Wednesday 4 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 19 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 Wednesday 4 April

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:58  12:46 madhyāhna ends
11:1011:3411:5812:2212:4613:1013:34

48 of 48 minutes covered

Midday of Thursday 5 April

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:57  12:45 madhyāhna ends
Pūrṇimā ends 11:38:12
11:0911:3311:5712:2112:4513:0913:33

0 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 09:49 on Wed 4 Apr to 11:38 on Thu 5 Apr.

    1928-04-04T01:48:31Z → 1928-04-05T03:38:13Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 4th, 11:57–12:45 on the 5th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 4th and 0 of 48 on the 5th.

    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 1148 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1928: Wednesday 4 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1928 falls on Wednesday 4 April. Pūrṇimā runs from 09:49 on Wed 4 Apr to 11:38 on Thu 5 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1928/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 4 Apr
Ahargaṇa, classicalDisc centre, no refractionWed 4 Apr
compat-drikpanchangComparison profileThu 5 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 4thCoveredMadhyāhna 5thCoveredRuled
Los Angeles17:49 → 19:3811:3248 min11:320 min4 Apr
Chicago19:49 → 21:3811:3048 min11:300 min4 Apr
Jersey City20:49 → 22:3811:3648 min11:350 min4 Apr
Port of Spain21:49 → 23:3811:4548 min11:450 min4 Apr
London01:49 → 03:3811:4048 min11:400 min4 Apr
Durban03:49 → 05:3811:3548 min11:340 min4 Apr
Dubai05:49 → 07:3811:5848 min11:580 min4 Apr
Delhi07:19 → 09:0812:0048 min12:000 min4 Apr
Kolkata07:19 → 09:0811:1648 min11:160 min4 Apr
Singapore08:49 → 10:3811:4448 min11:430 min4 Apr
Sydney11:49 → 13:3811:3434 min11:3448 min5 Apr
Suva13:49 → 15:3811:450 min11:4548 min5 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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