Ruling · Dyūta Pratipad · 2087

Monday 27 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 520 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 Monday 27 October

Taken. The only forenoon Pratipadā reaches.

06:40 sunrisepūrvāhṇa ends 10:15
06:1607:0407:5208:4009:2810:16

215 of 215 minutes covered

Forenoon of Tuesday 28 October

Pratipadā is absent from pūrvāhṇa. Not taken.

06:41 sunrisepūrvāhṇa ends 10:15
06:1707:0507:5308:4109:2910:17

0 of 214 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 19:31 on Sun 26 Oct to 22:02 on Mon 27 Oct.

    2087-10-26T11:30:50Z → 2087-10-27T14:01:42Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:40–10:15 on the 27th, 06:41–10:15 on the 28th.

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

  3. 03

    Rule

    Pratipadā must be present during pūrvāhṇa. It covers 215 of 215 minutes on the 27th and 0 of 214 on the 28th.

    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 31174 s

  5. 05

    Ruling

    Dyūta Pratipad, Baoding, 2087: Monday 27 October.

    confidence: determinate

Say it like this

In Baoding, Dyūta Pratipad 2087 falls on Monday 27 October. Pratipadā runs from 19:31 on Sun 26 Oct to 22:02 on Mon 27 Oct and covers all of pūrvāhṇa that forenoon.

ahargana.org/baoding/festivals/2087/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 27 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 27 Oct
compat-drikpanchangComparison profileMon 27 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 26thCoveredSunrise 27thCoveredRuled
Los Angeles04:31 → 07:0207:08219 min07:090 min26 Oct
Chicago06:31 → 09:0207:17212 min07:18104 min26 Oct
Jersey City07:31 → 10:0207:21203 min07:22160 min26 Oct
Port of Spain07:31 → 10:0205:57142 min05:57236 min27 Oct
London11:31 → 14:0206:440 min06:46199 min27 Oct
Durban13:31 → 16:0205:070 min05:06263 min27 Oct
Dubai15:31 → 18:0206:230 min06:24226 min27 Oct
Delhi17:01 → 19:3206:290 min06:30223 min27 Oct
Kolkata17:01 → 19:3205:380 min05:39228 min27 Oct
Singapore19:31 → 22:0206:470 min06:47241 min27 Oct
Sydney22:31 → 01:0206:020 min06:01266 min27 Oct
Suva23:31 → 02:0205:310 min05:30254 min27 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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