Ruling · Dyūta Pratipad · 1909

Sunday 14 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 13 November

Qualifies with 3 of 203 minutes. Not taken.

06:58 sunrisepūrvāhṇa ends 10:21
Pratipadā begins 10:18:01
06:3407:2208:1008:5809:4610:34

3 of 203 minutes covered, the last 3

Forenoon of Sunday 14 November

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

06:59 sunrisepūrvāhṇa ends 10:21
06:3507:2308:1108:5909:4710:35

202 of 202 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 10:18 on Sat 13 Nov to 12:11 on Sun 14 Nov.

    1909-11-13T02:18:01Z → 1909-11-14T04:10:49Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:58–10:21 on the 13th, 06:59–10:21 on the 14th.

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

  3. 03

    Rule

    Pratipadā must be present during pūrvāhṇa. It covers 3 of 203 minutes on the 13th and 202 of 202 on the 14th.

    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 164 s < 300 s

  5. 05

    Ruling

    Dyūta Pratipad, Baoding, 1909: Sunday 14 November.

    confidence: boundary (margin, tie-break-unstated)

Say it like this

In Baoding, Dyūta Pratipad 1909 falls on Sunday 14 November. Pratipadā runs from 10:18 on Sat 13 Nov to 12:11 on Sun 14 Nov and covers all of pūrvāhṇa that forenoon. It also reaches the previous forenoon for 3 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 2 min 44 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1909/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 14 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 14 Nov
compat-drikpanchangComparison profileSun 14 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 13thCoveredSunrise 14thCoveredRuled
Los Angeles18:18 → 20:1106:24209 min06:250 min13 Nov
Chicago20:18 → 22:1106:38198 min06:390 min13 Nov
Jersey City21:18 → 23:1106:41200 min06:420 min13 Nov
Port of Spain22:18 → 00:1106:01233 min06:010 min13 Nov
London02:18 → 04:1107:14180 min07:160 min13 Nov
Durban04:18 → 06:1104:54271 min04:5377 min13 Nov
Dubai05:59 → 07:5206:15219 min06:1696 min13 Nov
Delhi07:48 → 09:4106:42149 min06:43178 min14 Nov
Kolkata07:48 → 09:4105:48102 min05:48222 min14 Nov
Singapore09:18 → 11:1105:4730 min05:47241 min14 Nov
Sydney12:18 → 14:1104:460 min04:45276 min14 Nov
Suva14:13 → 16:0605:180 min05:18259 min14 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

About Ahargaṇa