Ruling · Caitrī Pūrṇimā · 1970

Tuesday 21 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 692 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 Tuesday 21 April

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

48 of 48 minutes covered

Midday of Wednesday 22 April

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

0 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 00:15 on Tue 21 Apr to 00:21 on Wed 22 Apr.

    1970-04-20T16:14:44Z → 1970-04-21T16:21:17Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 21st, 11:53–12:41 on the 22nd.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 21st and 0 of 48 on the 22nd.

    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 41508 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 1970: Tuesday 21 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 1970 falls on Tuesday 21 April. Pūrṇimā runs from 00:15 on Tue 21 Apr to 00:21 on Wed 22 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1970/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 21 Apr
Ahargaṇa, classicalDisc centre, no refractionTue 21 Apr
compat-drikpanchangComparison profileTue 21 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles08:15 → 08:2111:2848 min11:280 min20 Apr
Chicago10:15 → 10:2111:2648 min11:260 min20 Apr
Jersey City11:15 → 11:2111:3248 min11:310 min20 Apr
Port of Spain12:15 → 12:2111:4114 min11:4140 min21 Apr
London17:15 → 17:2112:360 min12:3648 min21 Apr
Durban18:15 → 18:2111:310 min11:3048 min21 Apr
Dubai20:15 → 20:2111:540 min11:5448 min21 Apr
Delhi21:45 → 21:5111:560 min11:5648 min21 Apr
Kolkata21:45 → 21:5111:120 min11:1248 min21 Apr
Singapore23:45 → 23:5112:100 min12:0948 min21 Apr
Sydney02:15 → 02:2111:300 min11:3048 min21 Apr
Suva04:15 → 04:2111:410 min11:4148 min21 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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