Ruling · Akhaṇḍa Dvādaśī · 2026

Monday 21 December

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 288 minutes.

Decide it for

UjjainDelhiKolkataSingaporeSydneyJersey City

23°11′ N 75°47′ E · Asia/Kolkata · GeoNames 1253914

The two middays

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

Midday of Sunday 20 December

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

0 of 48 minutes covered

Midday of Monday 21 December

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:01  12:49 madhyāhna ends
11:1311:3712:0112:2512:4913:1313:37

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 20:15 on Sun 20 Dec to 17:37 on Mon 21 Dec.

    2026-12-20T14:45:05Z → 2026-12-21T12:06:52Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 20th, 12:01–12:49 on the 21st.

    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 20th and 48 of 48 on the 21st.

    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 17281 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Ujjain, 2026: Monday 21 December.

    confidence: determinate

Say it like this

In Ujjain, Akhaṇḍa Dvādaśī 2026 falls on Monday 21 December. Dvādaśī runs from 20:15 on Sun 20 Dec to 17:37 on Mon 21 Dec and covers all of madhyāhna that midday.

ahargana.org/ujjain/festivals/2026/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 Ujjain.

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 Angeles06:45 → 04:0711:2748 min11:270 min20 Dec
Chicago08:45 → 06:0711:2448 min11:250 min20 Dec
Jersey City09:45 → 07:0711:3048 min11:300 min20 Dec
Port of Spain10:45 → 08:0711:4048 min11:400 min20 Dec
London14:45 → 12:0711:340 min11:3532 min21 Dec
Durban16:45 → 14:0711:290 min11:3048 min21 Dec
Dubai18:45 → 16:0711:520 min11:5348 min21 Dec
Delhi20:15 → 17:3711:550 min11:5548 min21 Dec
Kolkata20:15 → 17:3711:100 min11:1048 min21 Dec
Singapore22:45 → 20:0712:380 min12:3948 min21 Dec
Sydney01:45 → 23:0712:290 min12:2948 min21 Dec
Suva02:45 → 00:0711:400 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