Ruling · Dyūta Pratipad · 1920

Thursday 11 November

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 309 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 Thursday 11 November

Taken. The only forenoon Pratipadā reaches.

06:36 sunrisepūrvāhṇa ends 09:48
06:1207:0007:4808:3609:2410:12

192 of 192 minutes covered

Forenoon of Friday 12 November

Pratipadā is absent from pūrvāhṇa. Not taken.

06:37 sunrisepūrvāhṇa ends 09:48
06:1307:0107:4908:3709:2510:13

0 of 191 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 00:05 on Thu 11 Nov to 01:28 on Fri 12 Nov.

    1920-11-10T16:04:48Z → 1920-11-11T17:28:14Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:36–09:48 on the 11th, 06:37–09:48 on the 12th.

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

  3. 03

    Rule

    Pratipadā must be present during pūrvāhṇa. It covers 192 of 192 minutes on the 11th and 0 of 191 on the 12th.

    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 18538 s

  5. 05

    Ruling

    Dyūta Pratipad, Daqing, 1920: Thursday 11 November.

    confidence: determinate

Say it like this

In Daqing, Dyūta Pratipad 1920 falls on Thursday 11 November. Pratipadā runs from 00:05 on Thu 11 Nov to 01:28 on Fri 12 Nov and covers all of pūrvāhṇa that forenoon.

ahargana.org/daqing/festivals/1920/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 11 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 11 Nov
compat-drikpanchangComparison profileThu 11 Nov
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 10thCoveredSunrise 11thCoveredRuled
Los Angeles08:05 → 09:2806:21107 min06:22186 min11 Nov
Chicago10:05 → 11:2806:340 min06:35199 min11 Nov
Jersey City11:05 → 12:2806:370 min06:39201 min11 Nov
Port of Spain12:05 → 13:2806:000 min06:00233 min11 Nov
London16:05 → 17:2807:100 min07:12182 min11 Nov
Durban18:05 → 19:2804:550 min04:55270 min11 Nov
Dubai20:05 → 21:2806:320 min06:33220 min11 Nov
Delhi21:35 → 22:5806:400 min06:41216 min11 Nov
Kolkata21:35 → 22:5805:460 min05:47223 min11 Nov
Singapore23:05 → 00:2805:470 min05:47241 min11 Nov
Sydney02:05 → 03:2804:480 min04:47275 min11 Nov
Suva04:05 → 05:2805:240 min05:24258 min11 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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