Ruling · Caitrī Pūrṇimā · 1906

Monday 9 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 88 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 Sunday 8 April

Pūrṇimā is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Monday 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 17:35 on Sun 8 Apr to 14:12 on Mon 9 Apr.

    1906-04-08T09:35:28Z → 1906-04-09T06:12:12Z

  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 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 5270 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1906: Monday 9 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1906 falls on Monday 9 April. Pūrṇimā runs from 17:35 on Sun 8 Apr to 14:12 on Mon 9 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1906/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 9 Apr
Ahargaṇa, classicalDisc centre, no refractionMon 9 Apr
compat-drikpanchangComparison profileMon 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 Angeles01:35 → 22:1211:3148 min11:310 min8 Apr
Chicago03:35 → 00:1211:2948 min11:290 min8 Apr
Jersey City04:35 → 01:1211:3548 min11:340 min8 Apr
Port of Spain05:35 → 02:1211:4448 min11:440 min8 Apr
London09:35 → 06:1211:3948 min11:390 min8 Apr
Durban11:35 → 08:1211:3446 min11:330 min8 Apr
Dubai13:16 → 09:5311:380 min11:380 min9 Apr
Delhi15:05 → 11:4211:590 min11:590 min9 Apr
Kolkata15:05 → 11:4211:150 min11:1528 min9 Apr
Singapore16:35 → 13:1211:430 min11:4248 min9 Apr
Sydney19:35 → 16:1211:330 min11:3348 min9 Apr
Suva21:30 → 18:0711:390 min11:3948 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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