Ruling · Akhaṇḍa Dvādaśī · 2031

Thursday 25 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 399 minutes.

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 Wednesday 24 December

Dvādaśī is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Thursday 25 December

Taken. The only midday Dvādaśī reaches.

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

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 19:21 on Wed 24 Dec to 20:21 on Thu 25 Dec.

    2031-12-24T11:20:33Z → 2031-12-25T12:20:47Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 24th, 11:54–12:42 on the 25th.

    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 24th and 48 of 48 on the 25th.

    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 23946 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 2031: Thursday 25 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 2031 falls on Thursday 25 December. Dvādaśī runs from 19:21 on Wed 24 Dec to 20:21 on Thu 25 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2031/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 25 Dec
Ahargaṇa, classicalDisc centre, no refractionThu 25 Dec
compat-drikpanchangComparison profileThu 25 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 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles03:21 → 04:2111:2948 min11:290 min24 Dec
Chicago05:21 → 06:2111:2648 min11:270 min24 Dec
Jersey City06:21 → 07:2111:3248 min11:320 min24 Dec
Port of Spain07:21 → 08:2111:4248 min11:420 min24 Dec
London11:21 → 12:2111:3648 min11:3644 min25 Dec
Durban13:21 → 14:2111:310 min11:3248 min25 Dec
Dubai15:21 → 16:2111:540 min11:5548 min25 Dec
Delhi16:51 → 17:5111:560 min11:5748 min25 Dec
Kolkata16:51 → 17:5111:120 min11:1248 min25 Dec
Singapore19:21 → 20:2112:400 min12:4048 min25 Dec
Sydney22:21 → 23:2112:300 min12:3148 min25 Dec
Suva23:21 → 00:2111:410 min11:4248 min25 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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