Ruling · Caitrī Pūrṇimā · 1978

Sunday 23 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 18 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 22 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 23 April

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:53  12:41 madhyāhna ends
Pūrṇimā ends 12:10:56
11:0511:2911:5312:1712:4113:0513:29

18 of 48 minutes covered, the first 18

Pūrṇimā presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 13:58 on Sat 22 Apr to 12:11 on Sun 23 Apr.

    1978-04-22T05:57:50Z → 1978-04-23T04:10:57Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 22nd, 11:53–12:41 on the 23rd.

    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 22nd and 18 of 48 on the 23rd.

    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 1084 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1978: Sunday 23 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1978 falls on Sunday 23 April. Pūrṇimā runs from 13:58 on Sat 22 Apr to 12:11 on Sun 23 Apr and covers 18 of 48 minutes of madhyāhna that midday.

ahargana.org/baoding/festivals/1978/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 23 Apr
Ahargaṇa, classicalDisc centre, no refractionSun 23 Apr
compat-drikpanchangComparison profileSun 23 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 22ndCoveredMadhyāhna 23rdCoveredRuled
Los Angeles21:58 → 20:1111:2848 min11:280 min22 Apr
Chicago23:58 → 22:1111:2548 min11:250 min22 Apr
Jersey City00:58 → 23:1111:3148 min11:310 min22 Apr
Port of Spain01:58 → 00:1111:4148 min11:400 min22 Apr
London06:58 → 05:1112:3648 min12:350 min22 Apr
Durban07:58 → 06:1111:3048 min11:300 min22 Apr
Dubai09:58 → 08:1111:5448 min11:530 min22 Apr
Delhi11:28 → 09:4111:5648 min11:560 min22 Apr
Kolkata11:28 → 09:4111:1131 min11:110 min22 Apr
Singapore13:28 → 11:4112:090 min12:090 min23 Apr
Sydney15:58 → 14:1111:300 min11:2948 min23 Apr
Suva17:58 → 16:1111:410 min11:4148 min23 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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