Ruling · Caitrī Pūrṇimā · 1973

Tuesday 17 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 493 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 16 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 17 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 20:56 on Mon 16 Apr to 21:50 on Tue 17 Apr.

    1973-04-16T12:55:35Z → 1973-04-17T13:50:30Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 16th, 11:54–12:42 on the 17th.

    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 16th and 48 of 48 on the 17th.

    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 29592 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1973: Tuesday 17 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1973 falls on Tuesday 17 April. Pūrṇimā runs from 20:56 on Mon 16 Apr to 21:50 on Tue 17 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1973/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 17 Apr
Ahargaṇa, classicalDisc centre, no refractionTue 17 Apr
compat-drikpanchangComparison profileTue 17 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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles04:56 → 05:5011:2948 min11:290 min16 Apr
Chicago06:56 → 07:5011:2748 min11:260 min16 Apr
Jersey City07:56 → 08:5011:3248 min11:320 min16 Apr
Port of Spain08:56 → 09:5011:4248 min11:420 min16 Apr
London13:56 → 14:5012:370 min12:3748 min17 Apr
Durban14:56 → 15:5011:320 min11:3148 min17 Apr
Dubai16:56 → 17:5011:550 min11:5548 min17 Apr
Delhi18:26 → 19:2011:570 min11:5748 min17 Apr
Kolkata18:26 → 19:2011:130 min11:1248 min17 Apr
Singapore20:26 → 21:2012:100 min12:1048 min17 Apr
Sydney22:56 → 23:5011:310 min11:3148 min17 Apr
Suva00:56 → 01:5011:420 min11:4248 min17 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

About Ahargaṇa