Ruling · Caitrī Pūrṇimā · 2002

Saturday 27 April

Boundaryin Daegu, under the Rashtriya Panchang method. A threshold is only 0 min 21 s away. Say “contested”.

Decide it for

DaeguDelhiKolkataSingaporeSydneyJersey City

35°52′ N 128°36′ E · Asia/Seoul · GeoNames 1835329

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Friday 26 April

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

0 of 48 minutes covered

Midday of Saturday 27 April

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 12:00  12:48 madhyāhna ends
Pūrṇimā ends 11:59:55
11:1211:3612:0012:2412:4813:1213:36

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 15:25 on Fri 26 Apr to 12:00 on Sat 27 Apr.

    2002-04-26T06:24:58Z → 2002-04-27T02:59:55Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 26th, 12:00–12:48 on the 27th.

    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 26th and 0 of 48 on the 27th.

    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 21 s < 300 s

  5. 05

    Ruling

    Caitrī Pūrṇimā, Daegu, 2002: Saturday 27 April.

    confidence: boundary (margin)

Say it like this

In Daegu, Caitrī Pūrṇimā 2002 falls on Saturday 27 April. Pūrṇimā runs from 15:25 on Fri 26 Apr to 12:00 on Sat 27 Apr and covers 0 of 48 minutes of madhyāhna that midday. It is 0 min 21 s from a threshold: treat the date as contested.

ahargana.org/daegu/festivals/2002/chaitri-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 27 Apr
Ahargaṇa, classicalDisc centre, no refractionSat 27 Apr
compat-drikpanchangComparison profileSat 27 Apr
No institution has a recorded ruling for Daegu.

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 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles23:25 → 20:0012:2748 min12:270 min26 Apr
Chicago01:25 → 22:0012:2548 min12:250 min26 Apr
Jersey City02:25 → 23:0012:3048 min12:300 min26 Apr
Port of Spain02:25 → 23:0011:4048 min11:400 min26 Apr
London07:25 → 04:0012:3548 min12:350 min26 Apr
Durban08:25 → 05:0011:3048 min11:290 min26 Apr
Dubai10:25 → 07:0011:5348 min11:530 min26 Apr
Delhi11:55 → 08:3011:5548 min11:550 min26 Apr
Kolkata11:55 → 08:3011:114 min11:100 min26 Apr
Singapore14:25 → 11:0012:380 min12:380 min27 Apr
Sydney16:25 → 13:0011:290 min11:2948 min27 Apr
Suva18:25 → 15:0011:400 min11:4048 min27 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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