Ruling · Dyūta Pratipad · 2039

Thursday 17 November

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 2 min 42 s away. 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 Wednesday 16 November

Pratipadā is absent from pūrvāhṇa. Not taken.

07:01 sunrisepūrvāhṇa ends 10:22
06:3707:2508:1309:0109:4910:37

0 of 201 minutes covered

Forenoon of Thursday 17 November

Taken. The only forenoon Pratipadā reaches.

07:03 sunrisepūrvāhṇa ends 10:23
Pratipadā ends 10:20:03
06:3907:2708:1509:0309:5110:39

197 of 200 minutes covered, the first 197

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

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 13:46 on Wed 16 Nov to 10:20 on Thu 17 Nov.

    2039-11-16T05:46:09Z → 2039-11-17T02:20:03Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 07:01–10:22 on the 16th, 07:03–10:23 on the 17th.

    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 201 minutes on the 16th and 197 of 200 on the 17th.

    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 162 s < 300 s

  5. 05

    Ruling

    Dyūta Pratipad, Baoding, 2039: Thursday 17 November.

    confidence: boundary (margin)

Say it like this

In Baoding, Dyūta Pratipad 2039 falls on Thursday 17 November. Pratipadā runs from 13:46 on Wed 16 Nov to 10:20 on Thu 17 Nov and covers 197 of 200 minutes of pūrvāhṇa that forenoon. It is 2 min 42 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2039/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 17 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 17 Nov
compat-drikpanchangComparison profileThu 17 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 16thCoveredSunrise 17thCoveredRuled
Los Angeles21:46 → 18:2006:27207 min06:280 min16 Nov
Chicago23:46 → 20:2006:42196 min06:430 min16 Nov
Jersey City00:46 → 21:2006:45198 min06:460 min16 Nov
Port of Spain01:46 → 22:2006:02232 min06:020 min16 Nov
London05:46 → 02:2007:20176 min07:220 min16 Nov
Durban07:46 → 04:2004:5298 min04:510 min16 Nov
Dubai09:46 → 06:2006:3628 min06:370 min16 Nov
Delhi11:16 → 07:5006:440 min06:4565 min17 Nov
Kolkata11:16 → 07:5005:500 min05:50120 min17 Nov
Singapore13:46 → 10:2006:480 min06:48212 min17 Nov
Sydney16:46 → 13:2005:440 min05:43278 min17 Nov
Suva17:46 → 14:2005:220 min05:22260 min17 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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