Ruling · Dyūta Pratipad · 2066

Wednesday 20 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 5 min 47 s.

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 Tuesday 19 October

Pratipadā is absent from pūrvāhṇa. Not taken.

06:03 sunrisepūrvāhṇa ends 09:38
Pratipadā begins 09:43:23
05:3906:2707:1508:0308:5109:39

0 of 214 minutes covered

Forenoon of Wednesday 20 October

Taken. The only forenoon Pratipadā reaches.

06:05 sunrisepūrvāhṇa ends 09:38
Pratipadā ends 07:45:27
05:4106:2907:1708:0508:5309:41

101 of 213 minutes covered, the first 101

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

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 09:43 on Tue 19 Oct to 07:45 on Wed 20 Oct.

    2066-10-19T01:43:23Z → 2066-10-19T23:45:27Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:03–09:38 on the 19th, 06:05–09:38 on the 20th.

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

  3. 03

    Rule

    Pratipadā must be present during pūrvāhṇa. It covers 0 of 214 minutes on the 19th and 101 of 213 on the 20th.

    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 347 s

  5. 05

    Ruling

    Dyūta Pratipad, Daqing, 2066: Wednesday 20 October.

    confidence: determinate

Say it like this

In Daqing, Dyūta Pratipad 2066 falls on Wednesday 20 October. Pratipadā runs from 09:43 on Tue 19 Oct to 07:45 on Wed 20 Oct and covers 101 of 213 minutes of pūrvāhṇa that forenoon.

ahargana.org/daqing/festivals/2066/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 20 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 20 Oct
compat-drikpanchangComparison profileWed 20 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 19thCoveredSunrise 20thCoveredRuled
Los Angeles18:43 → 16:4507:02224 min07:030 min19 Oct
Chicago20:43 → 18:4507:08218 min07:100 min19 Oct
Jersey City21:43 → 19:4507:13219 min07:140 min19 Oct
Port of Spain21:43 → 19:4505:56237 min05:560 min19 Oct
London02:43 → 00:4507:32209 min07:340 min19 Oct
Durban03:43 → 01:4505:14258 min05:130 min19 Oct
Dubai05:43 → 03:4506:19230 min06:200 min19 Oct
Delhi07:13 → 05:1506:25179 min06:250 min19 Oct
Kolkata07:13 → 05:1505:35133 min05:350 min19 Oct
Singapore09:43 → 07:4506:4766 min06:4758 min19 Oct
Sydney12:43 → 10:4506:090 min06:08261 min20 Oct
Suva13:43 → 11:4505:350 min05:34251 min20 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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