Ruling · Akhaṇḍa Dvādaśī · 2042

Wednesday 24 December

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 0 min 24 s away. Say “contested”.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 23 December

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
Dvādaśī begins 12:41:31
11:0511:2911:5312:1712:4113:0513:29

0 of 48 minutes covered

Midday of Wednesday 24 December

Taken. Dvādaśī reaches neither midday; the rule takes the second day.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

0 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 12:42 on Tue 23 Dec to 09:55 on Wed 24 Dec.

    2042-12-23T04:41:32Z → 2042-12-24T01:55:02Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 23rd, 11:54–12:42 on the 24th.

    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 23rd and 0 of 48 on the 24th.

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

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: paraviddha → second-day · margin 24 s < 300 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 2042: Wednesday 24 December.

    confidence: boundary (margin)

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 2042 falls on Wednesday 24 December. Dvādaśī runs from 12:42 on Tue 23 Dec to 09:55 on Wed 24 Dec, and reaches madhyāhna on neither day. It is 0 min 24 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2042/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 24 Dec
Ahargaṇa, classicalDisc centre, no refractionWed 24 Dec
compat-drikpanchangComparison profileTue 23 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 23rdCoveredMadhyāhna 24thCoveredRuled
Los Angeles20:42 → 17:5511:2848 min11:290 min23 Dec
Chicago22:42 → 19:5511:2648 min11:260 min23 Dec
Jersey City23:42 → 20:5511:3248 min11:320 min23 Dec
Port of Spain00:42 → 21:5511:4148 min11:420 min23 Dec
London04:42 → 01:5511:3648 min11:360 min23 Dec
Durban06:42 → 03:5511:3148 min11:310 min23 Dec
Dubai08:42 → 05:5511:5448 min11:540 min23 Dec
Delhi10:12 → 07:2511:5648 min11:570 min23 Dec
Kolkata10:12 → 07:2511:1248 min11:120 min23 Dec
Singapore12:42 → 09:5512:4046 min12:400 min23 Dec
Sydney15:42 → 12:5512:300 min12:3124 min24 Dec
Suva16:42 → 13:5511:410 min11:4248 min24 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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