Ruling · Akhaṇḍa Dvādaśī · 1913

Wednesday 10 December

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 476 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

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

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Tuesday 9 December

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:08  11:56 madhyāhna ends
10:2010:4411:0811:3211:5612:2012:44

0 of 48 minutes covered

Midday of Wednesday 10 December

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:08  11:56 madhyāhna ends
10:2010:4411:0811:3211:5612:2012:44

48 of 48 minutes covered

Dvādaśī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 19:52 on Tue 9 Dec to 21:34 on Wed 10 Dec.

    1913-12-09T11:52:14Z → 1913-12-10T13:34:25Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:08–11:56 on the 9th, 11:08–11:56 on the 10th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 28572 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Daqing, 1913: Wednesday 10 December.

    confidence: determinate

Say it like this

In Daqing, Akhaṇḍa Dvādaśī 1913 falls on Wednesday 10 December. Dvādaśī runs from 19:52 on Tue 9 Dec to 21:34 on Wed 10 Dec and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1913/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 10 Dec
Ahargaṇa, classicalDisc centre, no refractionWed 10 Dec
compat-drikpanchangComparison profileWed 10 Dec
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/akhanda-dvadashi · ruleset 2026.3-draft

Month
Mārgaśīrṣa, amānta
Pakṣa · aṅga
Śukla · Dvādaśī
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 104

“S 12 Matsya dvadasi, Akhanda dvadasi (paraviddha), Vyanjana dvadasi & Dana dvadasi (Orissa).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvādaśīMadhyāhna 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles03:52 → 05:3411:2148 min11:220 min9 Dec
Chicago05:52 → 07:3411:1948 min11:190 min9 Dec
Jersey City06:52 → 08:3411:2548 min11:250 min9 Dec
Port of Spain07:52 → 09:3411:3448 min11:350 min9 Dec
London11:52 → 13:3411:2924 min11:2948 min10 Dec
Durban13:52 → 15:3411:240 min11:2548 min10 Dec
Dubai15:33 → 17:1511:280 min11:2848 min10 Dec
Delhi17:22 → 19:0411:490 min11:5048 min10 Dec
Kolkata17:22 → 19:0411:050 min11:0548 min10 Dec
Singapore18:52 → 20:3411:330 min11:3348 min10 Dec
Sydney21:52 → 23:3411:230 min11:2448 min10 Dec
Suva23:47 → 01:2911:290 min11:3048 min10 Dec
Profile · tradition
pac-rp@2026.1 · smarta
Rule
akhanda-dvadashi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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