Ruling · Dyūta Pratipad · 1903

Wednesday 21 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 394 minutes.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two forenoons

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

Forenoon of Wednesday 21 October

Taken. The only forenoon Pratipadā reaches.

06:04 sunrisepūrvāhṇa ends 09:38
05:4006:2807:1608:0408:5209:40

214 of 214 minutes covered

Forenoon of Thursday 22 October

Pratipadā is absent from pūrvāhṇa. Not taken.

06:05 sunrisepūrvāhṇa ends 09:38
05:4106:2907:1708:0508:5309:41

0 of 213 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 23:30 on Tue 20 Oct to 22:15 on Wed 21 Oct.

    1903-10-20T15:30:17Z → 1903-10-21T14:15:28Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:04–09:38 on the 21st, 06:05–09:38 on the 22nd.

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

  3. 03

    Rule

    Pratipadā must be present during pūrvāhṇa. It covers 214 of 214 minutes on the 21st and 0 of 213 on the 22nd.

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

  4. 04

    Tie-break

    Only one forenoon qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 23621 s

  5. 05

    Ruling

    Dyūta Pratipad, Daqing, 1903: Wednesday 21 October.

    confidence: determinate

Say it like this

In Daqing, Dyūta Pratipad 1903 falls on Wednesday 21 October. Pratipadā runs from 23:30 on Tue 20 Oct to 22:15 on Wed 21 Oct and covers all of pūrvāhṇa that forenoon.

ahargana.org/daqing/festivals/1903/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 21 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 21 Oct
compat-drikpanchangComparison profileWed 21 Oct
No institution has a recorded ruling for Daqing.

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 20thCoveredSunrise 21stCoveredRuled
Los Angeles07:30 → 06:1506:02135 min06:0213 min20 Oct
Chicago09:30 → 08:1506:0816 min06:09127 min21 Oct
Jersey City10:30 → 09:1506:120 min06:13182 min21 Oct
Port of Spain11:30 → 10:1505:550 min05:56237 min21 Oct
London15:30 → 14:1506:310 min06:33208 min21 Oct
Durban17:30 → 16:1505:140 min05:13258 min21 Oct
Dubai19:11 → 17:5606:000 min06:01229 min21 Oct
Delhi20:51 → 19:3606:150 min06:16227 min21 Oct
Kolkata20:51 → 19:3605:260 min05:26231 min21 Oct
Singapore22:25 → 21:1005:420 min05:42241 min21 Oct
Sydney01:30 → 00:1505:100 min05:09261 min21 Oct
Suva03:25 → 02:1005:300 min05:30251 min21 Oct
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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