Ruling · Caitrī Pūrṇimā · 2079

Sunday 16 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 15 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 15 April

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:55  12:43 madhyāhna ends
Pūrṇimā begins 11:40:13
11:0711:3111:5512:1912:4313:0713:31

48 of 48 minutes covered

Midday of Sunday 16 April

Taken. Both middays qualify; the rule takes the second.

madhyāhna begins 11:55  12:43 madhyāhna ends
Pūrṇimā ends 13:03:59
11:0711:3111:5512:1912:4313:0713:31

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 11:40 on Sat 15 Apr to 13:04 on Sun 16 Apr.

    2079-04-15T03:40:13Z → 2079-04-16T05:03:59Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 15th, 11:55–12:43 on the 16th.

    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 15th and 48 of 48 on the 16th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Both middays qualify. Paraviddhā: the second is taken.

    priority: paraviddha → paraviddha · margin 874 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Baoding, 2079: Sunday 16 April.

    confidence: determinate

Say it like this

In Baoding, Caitrī Pūrṇimā 2079 falls on Sunday 16 April. Pūrṇimā runs from 11:40 on Sat 15 Apr to 13:04 on Sun 16 Apr and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.

ahargana.org/baoding/festivals/2079/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 16 Apr
Ahargaṇa, classicalDisc centre, no refractionSun 16 Apr
compat-drikpanchangComparison profileSun 16 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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles20:40 → 22:0412:2948 min12:290 min15 Apr
Chicago22:40 → 00:0412:2748 min12:270 min15 Apr
Jersey City23:40 → 01:0412:3348 min12:330 min15 Apr
Port of Spain23:40 → 01:0411:4248 min11:420 min15 Apr
London04:40 → 06:0412:3748 min12:370 min15 Apr
Durban05:40 → 07:0411:3248 min11:320 min15 Apr
Dubai07:40 → 09:0411:5548 min11:550 min15 Apr
Delhi09:10 → 10:3411:5848 min11:570 min15 Apr
Kolkata09:10 → 10:3411:1348 min11:130 min15 Apr
Singapore11:40 → 13:0412:4148 min12:4123 min16 Apr
Sydney13:40 → 15:0411:310 min11:3148 min16 Apr
Suva15:40 → 17:0411:430 min11:4248 min16 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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