Ruling · Dyūta Pratipad · 1971

Wednesday 20 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 347 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 Tuesday 19 October

Pratipadā is absent from pūrvāhṇa. Not taken.

06:31 sunrisepūrvāhṇa ends 10:12
06:0706:5507:4308:3109:1910:07

0 of 222 minutes covered

Forenoon of Wednesday 20 October

Taken. The only forenoon Pratipadā reaches.

06:32 sunrisepūrvāhṇa ends 10:12
06:0806:5607:4408:3209:2010:08

221 of 221 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 15:59 on Tue 19 Oct to 18:21 on Wed 20 Oct.

    1971-10-19T07:58:55Z → 1971-10-20T10:21:17Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:31–10:12 on the 19th, 06:32–10:12 on the 20th.

    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 222 minutes on the 19th and 221 of 221 on the 20th.

    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 20801 s

  5. 05

    Ruling

    Dyūta Pratipad, Baoding, 1971: Wednesday 20 October.

    confidence: determinate

Say it like this

In Baoding, Dyūta Pratipad 1971 falls on Wednesday 20 October. Pratipadā runs from 15:59 on Tue 19 Oct to 18:21 on Wed 20 Oct and covers all of pūrvāhṇa that forenoon.

ahargana.org/baoding/festivals/1971/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 20 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 20 Oct
compat-drikpanchangComparison profileWed 20 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 19thCoveredSunrise 20thCoveredRuled
Los Angeles00:59 → 03:2107:01224 min07:020 min19 Oct
Chicago02:59 → 05:2107:07219 min07:080 min19 Oct
Jersey City03:59 → 06:2107:11220 min07:130 min19 Oct
Port of Spain03:59 → 06:2105:55237 min05:5626 min19 Oct
London08:59 → 11:2107:30121 min07:32209 min20 Oct
Durban09:59 → 12:2105:150 min05:14258 min20 Oct
Dubai11:59 → 14:2106:190 min06:19230 min20 Oct
Delhi13:29 → 15:5106:240 min06:25227 min20 Oct
Kolkata13:29 → 15:5105:350 min05:35231 min20 Oct
Singapore15:29 → 17:5106:170 min06:17241 min20 Oct
Sydney17:59 → 20:2105:110 min05:09261 min20 Oct
Suva19:59 → 22:2105:360 min05:35251 min20 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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