Ruling · Dyūta Pratipad · 2066

Wednesday 20 October

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 Tuesday 19 October

Qualifies with 29 of 221 minutes. Not taken.

06:32 sunrisepūrvāhṇa ends 10:13
Pratipadā begins 09:43:23
06:0806:5607:4408:3209:2010:08

29 of 221 minutes covered, the last 29

Forenoon of Wednesday 20 October

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

06:33 sunrisepūrvāhṇa ends 10:13
Pratipadā ends 07:45:27
06:0906:5707:4508:3309:2110:09

73 of 220 minutes covered, the first 73

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

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 09:43 on Tue 19 Oct to 07:45 on Wed 20 Oct.

    2066-10-19T01:43:23Z → 2066-10-19T23:45:27Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:32–10:13 on the 19th, 06:33–10:13 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 29 of 221 minutes on the 19th and 73 of 220 on the 20th.

    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 1751 s

  5. 05

    Ruling

    Dyūta Pratipad, Baoding, 2066: Wednesday 20 October.

    confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Dyūta Pratipad 2066 falls on Wednesday 20 October. Pratipadā runs from 09:43 on Tue 19 Oct to 07:45 on Wed 20 Oct and covers 73 of 220 minutes of pūrvāhṇa that forenoon. It also reaches the previous forenoon for 29 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/baoding/festivals/2066/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 Angeles18:43 → 16:4507:02224 min07:030 min19 Oct
Chicago20:43 → 18:4507:08218 min07:100 min19 Oct
Jersey City21:43 → 19:4507:13219 min07:140 min19 Oct
Port of Spain21:43 → 19:4505:56237 min05:560 min19 Oct
London02:43 → 00:4507:32209 min07:340 min19 Oct
Durban03:43 → 01:4505:14258 min05:130 min19 Oct
Dubai05:43 → 03:4506:19230 min06:200 min19 Oct
Delhi07:13 → 05:1506:25179 min06:250 min19 Oct
Kolkata07:13 → 05:1505:35133 min05:350 min19 Oct
Singapore09:43 → 07:4506:4766 min06:4758 min19 Oct
Sydney12:43 → 10:4506:090 min06:08261 min20 Oct
Suva13:43 → 11:4505:350 min05:34251 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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