Ruling · Dyūta Pratipad · 2009

Monday 19 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 135 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 Sunday 18 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 Monday 19 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 13:33 on Sun 18 Oct to 12:28 on Mon 19 Oct.

    2009-10-18T05:33:05Z → 2009-10-19T04:27:38Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:31–10:12 on the 18th, 06:32–10:12 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 0 of 222 minutes on the 18th and 221 of 221 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 8112 s

  5. 05

    Ruling

    Dyūta Pratipad, Baoding, 2009: Monday 19 October.

    confidence: determinate

Say it like this

In Baoding, Dyūta Pratipad 2009 falls on Monday 19 October. Pratipadā runs from 13:33 on Sun 18 Oct to 12:28 on Mon 19 Oct and covers all of pūrvāhṇa that forenoon.

ahargana.org/baoding/festivals/2009/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 19 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 19 Oct
compat-drikpanchangComparison profileMon 19 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 18thCoveredSunrise 19thCoveredRuled
Los Angeles22:33 → 21:2807:01225 min07:020 min18 Oct
Chicago00:33 → 23:2807:07219 min07:080 min18 Oct
Jersey City01:33 → 00:2807:11220 min07:120 min18 Oct
Port of Spain01:33 → 00:2805:55237 min05:550 min18 Oct
London06:33 → 05:2807:30210 min07:320 min18 Oct
Durban07:33 → 06:2805:15119 min05:1474 min18 Oct
Dubai09:33 → 08:2806:1936 min06:19128 min19 Oct
Delhi11:03 → 09:5806:240 min06:25213 min19 Oct
Kolkata11:03 → 09:5805:340 min05:35231 min19 Oct
Singapore13:33 → 12:2806:480 min06:47241 min19 Oct
Sydney16:33 → 15:2806:110 min06:10261 min19 Oct
Suva17:33 → 16:2805:360 min05:35251 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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