Ruling · Akhaṇḍa Dvādaśī · 1957

Wednesday 4 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 17 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

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

Midday of Tuesday 3 December

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:44  12:32 madhyāhna ends
Dvādaśī begins 11:26:50
10:5611:2011:4412:0812:3212:5613:20

48 of 48 minutes covered

Midday of Wednesday 4 December

Taken. Both middays qualify; the rule takes the second.

madhyāhna begins 11:44  12:32 madhyāhna ends
Dvādaśī ends 13:04:43
10:5611:2011:4412:0812:3212:5613:20

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 11:27 on Tue 3 Dec to 13:05 on Wed 4 Dec.

    1957-12-03T03:26:51Z → 1957-12-04T05:04:44Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 3rd, 11:44–12:32 on the 4th.

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

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 3rd and 48 of 48 on the 4th.

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

  4. 04

    Tie-break

    Both middays qualify. Paraviddhā: the second is taken.

    priority: paraviddha → paraviddha · margin 1013 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 1957: Wednesday 4 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 1957 falls on Wednesday 4 December. Dvādaśī runs from 11:27 on Tue 3 Dec to 13:05 on Wed 4 Dec and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.

ahargana.org/baoding/festivals/1957/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 4 Dec
Ahargaṇa, classicalDisc centre, no refractionWed 4 Dec
compat-drikpanchangComparison profileWed 4 Dec
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/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 3rdCoveredMadhyāhna 4thCoveredRuled
Los Angeles19:27 → 21:0511:1948 min11:190 min3 Dec
Chicago21:27 → 23:0511:1648 min11:170 min3 Dec
Jersey City22:27 → 00:0511:2248 min11:230 min3 Dec
Port of Spain23:27 → 01:0511:3248 min11:320 min3 Dec
London03:27 → 05:0511:2648 min11:270 min3 Dec
Durban05:27 → 07:0511:2248 min11:220 min3 Dec
Dubai07:27 → 09:0511:4448 min11:450 min3 Dec
Delhi08:57 → 10:3511:4748 min11:470 min3 Dec
Kolkata08:57 → 10:3511:0248 min11:030 min3 Dec
Singapore10:57 → 12:3512:0048 min12:0134 min4 Dec
Sydney13:27 → 15:0511:210 min11:2148 min4 Dec
Suva15:27 → 17:0511:320 min11:3248 min4 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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