Ruling · Dyūta Pratipad · 1943

Saturday 30 October

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

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two forenoons

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

Forenoon of Friday 29 October

Qualifies with 16 of 214 minutes. Not taken.

07:41 sunrisepūrvāhṇa ends 11:15
Pratipadā begins 10:59:08
07:1708:0508:5309:4110:2911:17

16 of 214 minutes covered, the last 16

Forenoon of Saturday 30 October

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

07:42 sunrisepūrvāhṇa ends 11:15
Pratipadā ends 10:26:56
07:1808:0608:5409:4210:3011:18

165 of 213 minutes covered, the first 165

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

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 10:59 on Fri 29 Oct to 10:27 on Sat 30 Oct.

    1943-10-29T01:59:09Z → 1943-10-30T01:26:57Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 07:41–11:15 on the 29th, 07:42–11:15 on the 30th.

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

  3. 03

    Rule

    Pratipadā must be present during pūrvāhṇa. It covers 16 of 214 minutes on the 29th and 165 of 213 on the 30th.

    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 941 s

  5. 05

    Ruling

    Dyūta Pratipad, Baoding, 1943: Saturday 30 October.

    confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Dyūta Pratipad 1943 falls on Saturday 30 October. Pratipadā runs from 10:59 on Fri 29 Oct to 10:27 on Sat 30 Oct and covers 165 of 213 minutes of pūrvāhṇa that forenoon. It also reaches the previous forenoon for 16 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/baoding/festivals/1943/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 30 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 30 Oct
compat-drikpanchangComparison profileSat 30 Oct
No institution has a recorded ruling for Baoding.

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 29thCoveredSunrise 30thCoveredRuled
Los Angeles18:59 → 18:2707:10218 min07:110 min29 Oct
Chicago20:59 → 20:2707:19210 min07:200 min29 Oct
Jersey City21:59 → 21:2707:23212 min07:240 min29 Oct
Port of Spain22:59 → 22:2706:57235 min06:570 min29 Oct
London02:59 → 02:2707:48198 min07:490 min29 Oct
Durban04:59 → 04:2706:05263 min06:040 min29 Oct
Dubai05:59 → 05:2706:24226 min06:250 min29 Oct
Delhi08:29 → 07:5707:30164 min07:3126 min29 Oct
Kolkata08:29 → 07:5706:39117 min06:4077 min29 Oct
Singapore10:59 → 10:2707:4649 min07:46161 min30 Oct
Sydney12:59 → 12:2705:590 min05:58267 min30 Oct
Suva13:59 → 13:2705:290 min05:29254 min30 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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