Ruling · Caitrī Pūrṇimā · 2031

Monday 7 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 556 minutes.

Decide it for

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 Monday 7 April

Taken. The only midday Pūrṇimā reaches.

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

48 of 48 minutes covered

Midday of Tuesday 8 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

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

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 02:40 on Mon 7 Apr to 01:21 on Tue 8 Apr.

    2031-04-06T18:40:20Z → 2031-04-07T17:21:21Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 7th, 11:56–12:44 on the 8th.

    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 7th and 0 of 48 on the 8th.

    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 33386 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 2031: Monday 7 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 2031 falls on Monday 7 April. Pūrṇimā runs from 02:40 on Mon 7 Apr to 01:21 on Tue 8 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2031/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 7 Apr
Ahargaṇa, classicalDisc centre, no refractionMon 7 Apr
compat-drikpanchangComparison profileMon 7 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 6thCoveredMadhyāhna 7thCoveredRuled
Los Angeles11:40 → 10:2112:3248 min12:310 min6 Apr
Chicago13:40 → 12:2112:290 min12:290 min7 Apr
Jersey City14:40 → 13:2112:350 min12:3547 min7 Apr
Port of Spain14:40 → 13:2111:450 min11:4448 min7 Apr
London19:40 → 18:2112:400 min12:3948 min7 Apr
Durban20:40 → 19:2111:340 min11:3448 min7 Apr
Dubai22:40 → 21:2111:570 min11:5748 min7 Apr
Delhi00:10 → 22:5112:000 min12:0048 min7 Apr
Kolkata00:10 → 22:5111:150 min11:1548 min7 Apr
Singapore02:40 → 01:2112:430 min12:4348 min7 Apr
Sydney04:40 → 03:2111:340 min11:3348 min7 Apr
Suva06:40 → 05:2111:450 min11:4548 min7 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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