Ruling · Dyūta Pratipad · 2044

Friday 21 October

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

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 21 October

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

06:07 sunrisepūrvāhṇa ends 09:38
Pratipadā begins 07:36:30
05:4306:3107:1908:0708:5509:43

122 of 212 minutes covered, the last 122

Forenoon of Saturday 22 October

Qualifies with 91 of 211 minutes. Not taken.

06:08 sunrisepūrvāhṇa ends 09:39
Pratipadā ends 07:39:15
05:4406:3207:2008:0808:5609:44

91 of 211 minutes covered, the first 91

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

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 07:37 on Fri 21 Oct to 07:39 on Sat 22 Oct.

    2044-10-20T23:36:31Z → 2044-10-21T23:39:15Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:07–09:38 on the 21st, 06:08–09:39 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 122 of 212 minutes on the 21st and 91 of 211 on the 22nd.

    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 5399 s

  5. 05

    Ruling

    Dyūta Pratipad, Daqing, 2044: Friday 21 October.

    confidence: boundary (tie-break-unstated)

Say it like this

In Daqing, Dyūta Pratipad 2044 falls on Friday 21 October. Pratipadā runs from 07:37 on Fri 21 Oct to 07:39 on Sat 22 Oct and covers 122 of 212 minutes of pūrvāhṇa that forenoon. It also reaches the next forenoon for 91 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/daqing/festivals/2044/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 21 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 21 Oct
compat-drikpanchangComparison profileFri 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 Angeles16:37 → 16:3907:030 min07:04222 min21 Oct
Chicago18:37 → 18:3907:100 min07:11216 min21 Oct
Jersey City19:37 → 19:3907:140 min07:15217 min21 Oct
Port of Spain19:37 → 19:3905:560 min05:56236 min21 Oct
London00:37 → 00:3907:340 min07:36206 min21 Oct
Durban01:37 → 01:3905:120 min05:11260 min21 Oct
Dubai03:37 → 03:3906:200 min06:20228 min21 Oct
Delhi05:07 → 05:0906:250 min06:26226 min21 Oct
Kolkata05:07 → 05:0905:360 min05:36230 min21 Oct
Singapore07:37 → 07:3906:470 min06:47192 min21 Oct
Sydney10:37 → 10:3906:080 min06:070 min22 Oct
Suva11:37 → 11:3905:340 min05:330 min22 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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