Ruling · Dyūta Pratipad · 1921

Monday 31 October

Boundaryin Daegu, under the Rashtriya Panchang method. Both forenoons qualify and the rule does not say which to take. Say “contested”.

Decide it for

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

The two forenoons

One ghaṭī is 24 minutes. Pūrvāhṇa is first 5 of 15 day muhūrtas.

Forenoon of Monday 31 October

Taken. Both forenoons qualify; the rule is silent, and this one is covered longer.

06:46 sunrisepūrvāhṇa ends 10:22
Pratipadā begins 08:38:26
06:2207:1007:5808:4609:3410:22

103 of 215 minutes covered, the last 103

Forenoon of Tuesday 1 November

Qualifies with 28 of 215 minutes. Not taken.

06:47 sunrisepūrvāhṇa ends 10:22
Pratipadā ends 07:15:11
06:2307:1107:5908:4709:3510:23

28 of 215 minutes covered, the first 28

Pratipadā presentPūrvāhṇa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 08:38 on Mon 31 Oct to 07:15 on Tue 1 Nov.

    1921-10-30T23:38:26Z → 1921-10-31T22:15:11Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:46–10:22 on the 31st, 06:47–10:22 on the 1st.

    purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be present during pūrvāhṇa. It covers 103 of 215 minutes on the 31st and 28 of 215 on the 1st.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Both forenoons qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 1672 s

  5. 05

    Ruling

    Dyūta Pratipad, Daegu, 1921: Monday 31 October.

    confidence: boundary (tie-break-unstated)

Say it like this

In Daegu, Dyūta Pratipad 1921 falls on Monday 31 October. Pratipadā runs from 08:38 on Mon 31 Oct to 07:15 on Tue 1 Nov and covers 103 of 215 minutes of pūrvāhṇa that forenoon. It also reaches the next forenoon for 28 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/daegu/festivals/1921/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 31 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 31 Oct
compat-drikpanchangComparison profileMon 31 Oct
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/dyuta-pratipad · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Pratipadā
Kāla
Pūrvāhṇa
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 104

“S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePratipadāSunrise 30thCoveredSunrise 31stCoveredRuled
Los Angeles15:38 → 14:1506:110 min06:12216 min31 Oct
Chicago17:38 → 16:1506:200 min06:22208 min31 Oct
Jersey City18:38 → 17:1506:240 min06:25210 min31 Oct
Port of Spain19:38 → 18:1505:570 min05:57235 min31 Oct
London23:38 → 22:1506:500 min06:52195 min31 Oct
Durban01:38 → 00:1505:040 min05:03264 min31 Oct
Dubai03:38 → 02:1506:250 min06:26225 min31 Oct
Delhi05:08 → 03:4506:310 min06:32222 min31 Oct
Kolkata05:08 → 03:4505:400 min05:40227 min31 Oct
Singapore06:38 → 05:1505:460 min05:46189 min31 Oct
Sydney09:38 → 08:1504:580 min04:570 min1 Nov
Suva11:38 → 10:1505:290 min05:280 min1 Nov
Profile · tradition
pac-rp@2026.1 · smarta
Rule
dyuta-pratipad@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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