Ruling · Caitrī Pūrṇimā · 2009

Thursday 9 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 612 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 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

Midday of Thursday 9 April

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:56  12:44 madhyāhna ends
11:0811:3211:5612:2012:4413:0813:32

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 23:40 on Wed 8 Apr to 22:56 on Thu 9 Apr.

    2009-04-08T15:40:28Z → 2009-04-09T14:55:48Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 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 0 of 48 minutes on the 8th and 48 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 36702 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 2009: Thursday 9 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 2009 falls on Thursday 9 April. Pūrṇimā runs from 23:40 on Wed 8 Apr to 22:56 on Thu 9 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2009/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 9 Apr
Ahargaṇa, classicalDisc centre, no refractionThu 9 Apr
compat-drikpanchangComparison profileThu 9 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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles08:40 → 07:5612:3148 min12:310 min8 Apr
Chicago10:40 → 09:5612:2948 min12:280 min8 Apr
Jersey City11:40 → 10:5612:3448 min12:340 min8 Apr
Port of Spain11:40 → 10:5611:4448 min11:440 min8 Apr
London16:40 → 15:5612:390 min12:3948 min9 Apr
Durban17:40 → 16:5611:340 min11:3348 min9 Apr
Dubai19:40 → 18:5611:570 min11:5748 min9 Apr
Delhi21:10 → 20:2611:590 min11:5948 min9 Apr
Kolkata21:10 → 20:2611:150 min11:1448 min9 Apr
Singapore23:40 → 22:5612:430 min12:4248 min9 Apr
Sydney01:40 → 00:5611:330 min11:3348 min9 Apr
Suva03:40 → 02:5611:440 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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