Ruling · Dyūta Pratipad · 1987

Friday 23 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 307 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 Friday 23 October

Taken. The only forenoon Pratipadā reaches.

06:35 sunrisepūrvāhṇa ends 10:13
06:1106:5907:4708:3509:2310:11

218 of 218 minutes covered

Forenoon of Saturday 24 October

Pratipadā is absent from pūrvāhṇa. Not taken.

06:36 sunrisepūrvāhṇa ends 10:13
06:1207:0007:4808:3609:2410:12

0 of 217 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 01:28 on Fri 23 Oct to 00:48 on Sat 24 Oct.

    1987-10-22T17:27:53Z → 1987-10-23T16:48:06Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:35–10:13 on the 23rd, 06:36–10:13 on the 24th.

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

  3. 03

    Rule

    Pratipadā must be present during pūrvāhṇa. It covers 218 of 218 minutes on the 23rd and 0 of 217 on the 24th.

    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 18425 s

  5. 05

    Ruling

    Dyūta Pratipad, Baoding, 1987: Friday 23 October.

    confidence: determinate

Say it like this

In Baoding, Dyūta Pratipad 1987 falls on Friday 23 October. Pratipadā runs from 01:28 on Fri 23 Oct to 00:48 on Sat 24 Oct and covers all of pūrvāhṇa that forenoon.

ahargana.org/baoding/festivals/1987/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 23 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 23 Oct
compat-drikpanchangComparison profileFri 23 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 22ndCoveredSunrise 23rdCoveredRuled
Los Angeles10:28 → 09:4807:0418 min07:05163 min23 Oct
Chicago12:28 → 11:4807:110 min07:12215 min23 Oct
Jersey City13:28 → 12:4807:150 min07:16216 min23 Oct
Port of Spain13:28 → 12:4805:560 min05:56236 min23 Oct
London18:28 → 17:4807:360 min07:38205 min23 Oct
Durban19:28 → 18:4805:120 min05:11260 min23 Oct
Dubai21:28 → 20:4806:200 min06:21228 min23 Oct
Delhi22:58 → 22:1806:260 min06:27226 min23 Oct
Kolkata22:58 → 22:1805:360 min05:36230 min23 Oct
Singapore01:28 → 00:4806:470 min06:47241 min23 Oct
Sydney03:28 → 02:4805:070 min05:06263 min23 Oct
Suva05:28 → 04:4805:330 min05:33252 min23 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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