Ruling · Dyūta Pratipad · 1906

Thursday 18 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 13 minutes.

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 Thursday 18 October

Taken. The only forenoon Pratipadā reaches.

06:29 sunrisepūrvāhṇa ends 10:12
Pratipadā begins 06:42:34
06:0506:5307:4108:2909:1710:05

209 of 223 minutes covered, the last 209

Forenoon of Friday 19 October

Pratipadā is absent from pūrvāhṇa. Not taken.

06:30 sunrisepūrvāhṇa ends 10:12
06:0606:5407:4208:3009:1810:06

0 of 222 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 06:43 on Thu 18 Oct to 03:30 on Fri 19 Oct.

    1906-10-17T22:42:34Z → 1906-10-18T19:30:03Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:29–10:12 on the 18th, 06:30–10:12 on the 19th.

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

  3. 03

    Rule

    Pratipadā must be present during pūrvāhṇa. It covers 209 of 223 minutes on the 18th and 0 of 222 on the 19th.

    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 786 s

  5. 05

    Ruling

    Dyūta Pratipad, Baoding, 1906: Thursday 18 October.

    confidence: determinate

Say it like this

In Baoding, Dyūta Pratipad 1906 falls on Thursday 18 October. Pratipadā runs from 06:43 on Thu 18 Oct to 03:30 on Fri 19 Oct and covers 209 of 223 minutes of pūrvāhṇa that forenoon.

ahargana.org/baoding/festivals/1906/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 18 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 18 Oct
compat-drikpanchangComparison profileThu 18 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 17thCoveredSunrise 18thCoveredRuled
Los Angeles14:43 → 11:3005:590 min06:00225 min18 Oct
Chicago16:43 → 13:3006:050 min06:06220 min18 Oct
Jersey City17:43 → 14:3006:090 min06:10221 min18 Oct
Port of Spain18:43 → 15:3005:550 min05:55237 min18 Oct
London22:43 → 19:3006:270 min06:28211 min18 Oct
Durban00:43 → 21:3005:170 min05:16257 min18 Oct
Dubai02:24 → 23:1105:590 min05:59231 min18 Oct
Delhi04:13 → 01:0006:230 min06:23229 min18 Oct
Kolkata04:13 → 01:0005:340 min05:34232 min18 Oct
Singapore05:43 → 02:3005:480 min05:48242 min18 Oct
Sydney08:43 → 05:3005:130 min05:1249 min18 Oct
Suva10:38 → 07:2505:320 min05:310 min19 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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