Ruling · Caitrī Pūrṇimā · 1961

Saturday 1 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 12 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 Friday 31 March

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:59  12:47 madhyāhna ends
Pūrṇimā begins 12:59:06
11:1111:3511:5912:2312:4713:1113:35

0 of 48 minutes covered

Midday of Saturday 1 April

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

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

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 12:59 on Fri 31 Mar to 13:47 on Sat 1 Apr.

    1961-03-31T04:59:06Z → 1961-04-01T05:47:08Z

  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 0 of 48 minutes on the 31st and 48 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 736 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1961: Saturday 1 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1961 falls on Saturday 1 April. Pūrṇimā runs from 12:59 on Fri 31 Mar to 13:47 on Sat 1 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1961/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 1 Apr
Ahargaṇa, classicalDisc centre, no refractionSat 1 Apr
compat-drikpanchangComparison profileSat 1 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 31stCoveredMadhyāhna 1stCoveredRuled
Los Angeles20:59 → 21:4711:3348 min11:330 min31 Mar
Chicago22:59 → 23:4711:3148 min11:310 min31 Mar
Jersey City23:59 → 00:4711:3748 min11:370 min31 Mar
Port of Spain00:59 → 01:4711:4648 min11:460 min31 Mar
London05:59 → 06:4712:4148 min12:410 min31 Mar
Durban06:59 → 07:4711:3648 min11:360 min31 Mar
Dubai08:59 → 09:4711:5948 min11:590 min31 Mar
Delhi10:29 → 11:1712:0248 min12:010 min31 Mar
Kolkata10:29 → 11:1711:1748 min11:170 min1 Apr
Singapore12:29 → 13:1712:1534 min12:1548 min1 Apr
Sydney14:59 → 15:4711:350 min11:3548 min1 Apr
Suva16:59 → 17:4711:470 min11:4648 min1 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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