Ruling · Akhaṇḍa Dvādaśī · 1931

Monday 21 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 380 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 Monday 21 December

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

48 of 48 minutes covered

Midday of Tuesday 22 December

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

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 03:44 on Mon 21 Dec to 05:33 on Tue 22 Dec.

    1931-12-20T19:43:58Z → 1931-12-21T21:32:42Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 21st, 11:52–12:40 on the 22nd.

    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 21st and 0 of 48 on the 22nd.

    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 22775 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 1931: Monday 21 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 1931 falls on Monday 21 December. Dvādaśī runs from 03:44 on Mon 21 Dec to 05:33 on Tue 22 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1931/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 21 Dec
Ahargaṇa, classicalDisc centre, no refractionMon 21 Dec
compat-drikpanchangComparison profileMon 21 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles11:44 → 13:3311:2630 min11:2748 min21 Dec
Chicago13:44 → 15:3311:240 min11:2548 min21 Dec
Jersey City14:44 → 16:3311:300 min11:3048 min21 Dec
Port of Spain15:44 → 17:3311:390 min11:4048 min21 Dec
London19:44 → 21:3311:340 min11:3448 min21 Dec
Durban21:44 → 23:3311:290 min11:3048 min21 Dec
Dubai23:44 → 01:3311:520 min11:5248 min21 Dec
Delhi01:14 → 03:0311:540 min11:5548 min21 Dec
Kolkata01:14 → 03:0311:100 min11:1048 min21 Dec
Singapore02:44 → 04:3311:380 min11:3848 min21 Dec
Sydney05:44 → 07:3311:280 min11:2948 min21 Dec
Suva07:44 → 09:3311:390 min11:4048 min21 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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