Ruling · Caitrī Pūrṇimā · 1907

Sunday 28 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 84 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 Saturday 27 April

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

0 of 48 minutes covered

Midday of Sunday 28 April

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

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 16:37 on Sat 27 Apr to 14:05 on Sun 28 Apr.

    1907-04-27T08:37:19Z → 1907-04-28T06:04:32Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 27th, 11:52–12:40 on the 28th.

    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 27th and 48 of 48 on the 28th.

    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 5067 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1907: Sunday 28 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1907 falls on Sunday 28 April. Pūrṇimā runs from 16:37 on Sat 27 Apr to 14:05 on Sun 28 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1907/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 28 Apr
Ahargaṇa, classicalDisc centre, no refractionSun 28 Apr
compat-drikpanchangComparison profileSun 28 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 27thCoveredMadhyāhna 28thCoveredRuled
Los Angeles00:37 → 22:0511:2748 min11:270 min27 Apr
Chicago02:37 → 00:0511:2548 min11:240 min27 Apr
Jersey City03:37 → 01:0511:3048 min11:300 min27 Apr
Port of Spain04:37 → 02:0511:4048 min11:400 min27 Apr
London08:37 → 06:0511:3548 min11:350 min27 Apr
Durban10:37 → 08:0511:2948 min11:290 min27 Apr
Dubai12:18 → 09:4611:343 min11:340 min27 Apr
Delhi14:07 → 11:3511:550 min11:550 min28 Apr
Kolkata14:07 → 11:3511:100 min11:1024 min28 Apr
Singapore15:37 → 13:0511:380 min11:3848 min28 Apr
Sydney18:37 → 16:0511:290 min11:2948 min28 Apr
Suva20:32 → 18:0011:350 min11:3548 min28 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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