Ruling · Dyūta Pratipad · 2021

Friday 5 November

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 73 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 Friday 5 November

Taken. The only forenoon Pratipadā reaches.

06:28 sunrisepūrvāhṇa ends 09:45
06:0406:5207:4008:2809:1610:04

197 of 197 minutes covered

Forenoon of Saturday 6 November

Pratipadā is absent from pūrvāhṇa. Not taken.

06:29 sunrisepūrvāhṇa ends 09:45
06:0506:5307:4108:2909:1710:05

0 of 196 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 05:15 on Fri 5 Nov to 01:45 on Sat 6 Nov.

    2021-11-04T21:14:37Z → 2021-11-05T17:45:00Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:28–09:45 on the 5th, 06:29–09:45 on the 6th.

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

  3. 03

    Rule

    Pratipadā must be present during pūrvāhṇa. It covers 197 of 197 minutes on the 5th and 0 of 196 on the 6th.

    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 4377 s

  5. 05

    Ruling

    Dyūta Pratipad, Daqing, 2021: Friday 5 November.

    confidence: determinate

Say it like this

In Daqing, Dyūta Pratipad 2021 falls on Friday 5 November. Pratipadā runs from 05:15 on Fri 5 Nov to 01:45 on Sat 6 Nov and covers all of pūrvāhṇa that forenoon.

ahargana.org/daqing/festivals/2021/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 5 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 5 Nov
compat-drikpanchangComparison profileFri 5 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 4thCoveredSunrise 5thCoveredRuled
Los Angeles14:15 → 10:4507:160 min07:17208 min5 Nov
Chicago16:15 → 12:4507:270 min07:29204 min5 Nov
Jersey City17:15 → 13:4507:310 min07:32205 min5 Nov
Port of Spain17:15 → 13:4505:580 min05:59234 min5 Nov
London21:15 → 17:4507:000 min07:02188 min5 Nov
Durban23:15 → 19:4504:590 min04:58267 min5 Nov
Dubai01:15 → 21:4506:280 min06:29222 min5 Nov
Delhi02:45 → 23:1506:350 min06:36219 min5 Nov
Kolkata02:45 → 23:1505:430 min05:43224 min5 Nov
Singapore05:15 → 01:4506:460 min06:46241 min5 Nov
Sydney08:15 → 04:4505:520 min05:52129 min5 Nov
Suva09:15 → 05:4505:260 min05:2527 min5 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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