Ruling · Caitrī Pūrṇimā · 1999

Wednesday 31 March

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 310 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 31 March

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

48 of 48 minutes covered

Midday of Thursday 1 April

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

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 05:25 on Wed 31 Mar to 06:49 on Thu 1 Apr.

    1999-03-30T21:25:12Z → 1999-03-31T22:48:54Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 31st, 11:59–12:47 on the 1st.

    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 31st and 0 of 48 on the 1st.

    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 18579 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1999: Wednesday 31 March.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1999 falls on Wednesday 31 March. Pūrṇimā runs from 05:25 on Wed 31 Mar to 06:49 on Thu 1 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1999/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 31 Mar
Ahargaṇa, classicalDisc centre, no refractionWed 31 Mar
compat-drikpanchangComparison profileWed 31 Mar
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 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles13:25 → 14:4911:340 min11:3348 min31 Mar
Chicago15:25 → 16:4911:310 min11:3148 min31 Mar
Jersey City16:25 → 17:4911:370 min11:3748 min31 Mar
Port of Spain17:25 → 18:4911:470 min11:4648 min31 Mar
London22:25 → 23:4912:420 min12:4148 min31 Mar
Durban23:25 → 00:4911:360 min11:3648 min31 Mar
Dubai01:25 → 02:4912:000 min11:5948 min31 Mar
Delhi02:55 → 04:1912:020 min12:0248 min31 Mar
Kolkata02:55 → 04:1911:170 min11:1748 min31 Mar
Singapore05:25 → 06:4912:450 min12:4548 min31 Mar
Sydney07:25 → 08:4911:360 min11:3548 min31 Mar
Suva09:25 → 10:4911:470 min11:4748 min31 Mar
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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