Ruling · Caitrī Pūrṇimā · 1930

Sunday 13 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 65 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 12 April

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:55  12:43 madhyāhna ends
11:0711:3111:5512:1912:4313:0713:31

0 of 48 minutes covered

Midday of Sunday 13 April

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:55  12:43 madhyāhna ends
11:0711:3111:5512:1912:4313:0713:31

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 15:39 on Sat 12 Apr to 13:48 on Sun 13 Apr.

    1930-04-12T07:39:18Z → 1930-04-13T05:48:23Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 12th, 11:55–12:43 on the 13th.

    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 12th and 48 of 48 on the 13th.

    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 3909 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1930: Sunday 13 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1930 falls on Sunday 13 April. Pūrṇimā runs from 15:39 on Sat 12 Apr to 13:48 on Sun 13 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1930/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 13 Apr
Ahargaṇa, classicalDisc centre, no refractionSun 13 Apr
compat-drikpanchangComparison profileSun 13 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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles23:39 → 21:4811:3048 min11:300 min12 Apr
Chicago01:39 → 23:4811:2848 min11:280 min12 Apr
Jersey City02:39 → 00:4811:3448 min11:330 min12 Apr
Port of Spain03:39 → 01:4811:4348 min11:430 min12 Apr
London07:39 → 06:4811:3848 min12:380 min12 Apr
Durban09:39 → 07:4811:3348 min11:320 min12 Apr
Dubai11:39 → 09:4811:5648 min11:560 min12 Apr
Delhi13:09 → 11:1811:580 min11:580 min13 Apr
Kolkata13:09 → 11:1811:140 min11:135 min13 Apr
Singapore14:39 → 12:4811:420 min11:4148 min13 Apr
Sydney17:39 → 15:4811:320 min11:3248 min13 Apr
Suva19:39 → 17:4811:430 min11:4348 min13 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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