Ruling · Dyūta Pratipad · 2017

Friday 20 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 119 minutes.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two forenoons

One ghaṭī is 24 minutes. Pūrvāhṇa is first 5 of 15 day muhūrtas.

Forenoon of Friday 20 October

Taken. The only forenoon Pratipadā reaches.

06:04 sunrisepūrvāhṇa ends 09:38
05:4006:2807:1608:0408:5209:40

213 of 213 minutes covered

Forenoon of Saturday 21 October

Pratipadā is absent from pūrvāhṇa. Not taken.

06:06 sunrisepūrvāhṇa ends 09:38
05:4206:3007:1808:0608:5409:42

0 of 212 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 03:12 on Fri 20 Oct to 04:07 on Sat 21 Oct.

    2017-10-19T19:12:03Z → 2017-10-20T20:07:21Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:04–09:38 on the 20th, 06:06–09:38 on the 21st.

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

  3. 03

    Rule

    Pratipadā must be present during pūrvāhṇa. It covers 213 of 213 minutes on the 20th and 0 of 212 on the 21st.

    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 7110 s

  5. 05

    Ruling

    Dyūta Pratipad, Daqing, 2017: Friday 20 October.

    confidence: determinate

Say it like this

In Daqing, Dyūta Pratipad 2017 falls on Friday 20 October. Pratipadā runs from 03:12 on Fri 20 Oct to 04:07 on Sat 21 Oct and covers all of pūrvāhṇa that forenoon.

ahargana.org/daqing/festivals/2017/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 20 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 20 Oct
compat-drikpanchangComparison profileFri 20 Oct
No institution has a recorded ruling for Daqing.

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 Angeles12:12 → 13:0707:020 min07:03223 min20 Oct
Chicago14:12 → 15:0707:080 min07:09217 min20 Oct
Jersey City15:12 → 16:0707:120 min07:14218 min20 Oct
Port of Spain15:12 → 16:0705:550 min05:56237 min20 Oct
London20:12 → 21:0707:320 min07:34208 min20 Oct
Durban21:12 → 22:0705:140 min05:13259 min20 Oct
Dubai23:12 → 00:0706:190 min06:20229 min20 Oct
Delhi00:42 → 01:3706:250 min06:25227 min20 Oct
Kolkata00:42 → 01:3705:350 min05:35231 min20 Oct
Singapore03:12 → 04:0706:470 min06:47241 min20 Oct
Sydney06:12 → 07:0706:090 min06:08258 min20 Oct
Suva07:12 → 08:0705:350 min05:34154 min21 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

About Ahargaṇa