Ruling · Caitrī Pūrṇimā · 2057

Thursday 19 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 368 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 18 April

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

0 of 48 minutes covered

Midday of Thursday 19 April

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

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 21:47 on Wed 18 Apr to 18:50 on Thu 19 Apr.

    2057-04-18T13:47:17Z → 2057-04-19T10:49:53Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 18th, 11:54–12:42 on the 19th.

    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 18th and 48 of 48 on the 19th.

    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 22093 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 2057: Thursday 19 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 2057 falls on Thursday 19 April. Pūrṇimā runs from 21:47 on Wed 18 Apr to 18:50 on Thu 19 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2057/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 19 Apr
Ahargaṇa, classicalDisc centre, no refractionThu 19 Apr
compat-drikpanchangComparison profileThu 19 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 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles06:47 → 03:5012:2948 min12:280 min18 Apr
Chicago08:47 → 05:5012:2648 min12:260 min18 Apr
Jersey City09:47 → 06:5012:3248 min12:320 min18 Apr
Port of Spain09:47 → 06:5011:4148 min11:410 min18 Apr
London14:47 → 11:5012:360 min12:360 min19 Apr
Durban15:47 → 12:5011:310 min11:3148 min19 Apr
Dubai17:47 → 14:5011:540 min11:5448 min19 Apr
Delhi19:17 → 16:2011:570 min11:5648 min19 Apr
Kolkata19:17 → 16:2011:120 min11:1248 min19 Apr
Singapore21:47 → 18:5012:400 min12:4048 min19 Apr
Sydney23:47 → 20:5011:300 min11:3048 min19 Apr
Suva01:47 → 22:5011:420 min11:4148 min19 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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