Ruling · Caitrī Pūrṇimā · 1963

Monday 8 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 180 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 8 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 9 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 06:38 on Mon 8 Apr to 08:57 on Tue 9 Apr.

    1963-04-07T22:37:52Z → 1963-04-09T00:56:41Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 8th, 11:56–12:44 on the 9th.

    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 8th and 0 of 48 on the 9th.

    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 10780 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1963: Monday 8 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1963 falls on Monday 8 April. Pūrṇimā runs from 06:38 on Mon 8 Apr to 08:57 on Tue 9 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1963/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 8 Apr
Ahargaṇa, classicalDisc centre, no refractionMon 8 Apr
compat-drikpanchangComparison profileMon 8 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 7thCoveredMadhyāhna 9thCoveredRuled
Los Angeles14:38 → 16:5711:320 min11:310 min8 Apr
Chicago16:38 → 18:5711:290 min11:290 min8 Apr
Jersey City17:38 → 19:5711:350 min11:340 min8 Apr
Port of Spain18:38 → 20:5711:440 min11:440 min8 Apr
London23:38 → 01:5712:390 min12:390 min8 Apr
Durban00:38 → 02:5711:340 min11:330 min8 Apr
Dubai02:38 → 04:5711:570 min11:570 min8 Apr
Delhi04:08 → 06:2712:000 min11:590 min8 Apr
Kolkata04:08 → 06:2711:150 min11:150 min8 Apr
Singapore06:08 → 08:2712:130 min12:120 min8 Apr
Sydney08:38 → 10:5711:330 min11:330 min8 Apr
Suva10:38 → 12:5711:450 min11:4448 min9 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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