Ruling · Dyūta Pratipad · 1912

Sunday 10 November

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 Saturday 9 November

Qualifies with 15 of 205 minutes. Not taken.

06:54 sunrisepūrvāhṇa ends 10:19
Pratipadā begins 10:04:32
06:3007:1808:0608:5409:4210:30

15 of 205 minutes covered, the last 15

Forenoon of Sunday 10 November

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

06:55 sunrisepūrvāhṇa ends 10:20
Pratipadā ends 09:26:43
06:3107:1908:0708:5509:4310:31

152 of 205 minutes covered, the first 152

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

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 10:05 on Sat 9 Nov to 09:27 on Sun 10 Nov.

    1912-11-09T02:04:32Z → 1912-11-10T01:26:43Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:54–10:19 on the 9th, 06:55–10:20 on the 10th.

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

  3. 03

    Rule

    Pratipadā must be present during pūrvāhṇa. It covers 15 of 205 minutes on the 9th and 152 of 205 on the 10th.

    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 872 s

  5. 05

    Ruling

    Dyūta Pratipad, Baoding, 1912: Sunday 10 November.

    confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Dyūta Pratipad 1912 falls on Sunday 10 November. Pratipadā runs from 10:05 on Sat 9 Nov to 09:27 on Sun 10 Nov and covers 152 of 205 minutes of pūrvāhṇa that forenoon. It also reaches the previous forenoon for 15 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/1912/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 10 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 10 Nov
compat-drikpanchangComparison profileSun 10 Nov
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 9thCoveredSunrise 10thCoveredRuled
Los Angeles18:05 → 17:2706:20211 min06:210 min9 Nov
Chicago20:05 → 19:2706:33201 min06:340 min9 Nov
Jersey City21:05 → 20:2706:36203 min06:370 min9 Nov
Port of Spain22:05 → 21:2706:00233 min06:000 min9 Nov
London02:05 → 01:2707:08184 min07:100 min9 Nov
Durban04:05 → 03:2704:56269 min04:560 min9 Nov
Dubai05:46 → 05:0806:12221 min06:130 min9 Nov
Delhi07:35 → 06:5706:39162 min06:4017 min9 Nov
Kolkata07:35 → 06:5705:45114 min05:4671 min9 Nov
Singapore09:05 → 08:2705:4743 min05:47160 min10 Nov
Sydney12:05 → 11:2704:490 min04:48274 min10 Nov
Suva14:00 → 13:2205:190 min05:19258 min10 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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