Ruling · Caitrī Pūrṇimā · 1916

Tuesday 18 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 25 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 Monday 17 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 Tuesday 18 April

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:54  12:42 madhyāhna ends
Pūrṇimā ends 13:07:08
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 14:59 on Mon 17 Apr to 13:07 on Tue 18 Apr.

    1916-04-17T06:58:34Z → 1916-04-18T05:07:09Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 17th, 11:54–12:42 on the 18th.

    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 17th and 48 of 48 on the 18th.

    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 1513 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1916: Tuesday 18 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1916 falls on Tuesday 18 April. Pūrṇimā runs from 14:59 on Mon 17 Apr to 13:07 on Tue 18 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1916/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 18 Apr
Ahargaṇa, classicalDisc centre, no refractionTue 18 Apr
compat-drikpanchangComparison profileTue 18 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles22:59 → 21:0711:2948 min11:290 min17 Apr
Chicago00:59 → 23:0711:2748 min11:260 min17 Apr
Jersey City01:59 → 00:0711:3248 min11:320 min17 Apr
Port of Spain02:59 → 01:0711:4248 min11:410 min17 Apr
London06:59 → 05:0711:3748 min11:360 min17 Apr
Durban08:59 → 07:0711:3148 min11:310 min17 Apr
Dubai10:40 → 08:4811:3648 min11:350 min17 Apr
Delhi12:29 → 10:3711:5716 min11:570 min17 Apr
Kolkata12:29 → 10:3711:120 min11:120 min18 Apr
Singapore13:59 → 12:0711:400 min11:4027 min18 Apr
Sydney16:59 → 15:0711:310 min11:3048 min18 Apr
Suva18:59 → 17:0711:420 min11:4248 min18 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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