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Ruling · 2012 · Chattogram

Akhaṇḍa Dvādaśī

Monday 24 December2012 · Chattogram, Chittagong, Bangladesh

Determinatemargin 176 min

In Chattogram, under the Rashtriya Panchang method. Clear of every threshold by 176 minutes.

Decide it forChattogramDelhiKolkataSingaporeSydneyJersey City22°20′ N 91°50′ E · Asia/Dhaka · GeoNames 1205733

The two middays मध्याह्न

One ghaṭī is 24 minutes

Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Monday 24 December

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:28  12:16 madhyāhna ends
10:4011:0411:2811:5212:1612:4013:04

48 of 48 minutes covered

Midday of Tuesday 25 December

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:29  12:17 madhyāhna ends
10:4111:0511:2911:5312:1712:4113:05

0 of 48 minutes covered

Dvādaśī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided निर्णय

  1. Step 1, Aṅga

    Dvādaśī runs from 05:49 on Mon 24 Dec to 08:33 on Tue 25 Dec.

    2012-12-23T23:49:29Z → 2012-12-25T02:32:57Z
  2. Step 2, Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:28–12:16 on the 24th, 11:29–12:17 on the 25th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
  3. Step 3, Rule

    Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104
  4. Step 4, Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 10553 s
  5. Step 5, Ruling

    Akhaṇḍa Dvādaśī, Chattogram, 2012: Monday 24 December.

    confidence: determinate

Say it like this

In Chattogram, Akhaṇḍa Dvādaśī 2012 falls on Monday 24 December. Dvādaśī runs from 05:49 on Mon 24 Dec to 08:33 on Tue 25 Dec and covers all of madhyāhna that midday.

ahargana.org/chattogram/festivals/2012/akhanda-dvadashipac-rp@2026.1

Who says what

never edited to agree

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 24 Dec
Ahargaṇa, classicalDisc centre, no refractionMon 24 Dec
compat-drikpanchangComparison profileMon 24 Dec
No institution has a recorded ruling for Chattogram.

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 clocks

PlaceDvādaśīMadhyāhna 23rdCoveredMadhyāhna 25thCoveredRuled
Los Angeles15:49 → 18:3311:280 min11:290 min24 Dec
Chicago17:49 → 20:3311:260 min11:270 min24 Dec
Jersey City18:49 → 21:3311:320 min11:330 min24 Dec
Port of Spain19:49 → 22:3311:410 min11:420 min24 Dec
London23:49 → 02:3311:360 min11:370 min24 Dec
Durban01:49 → 04:3311:310 min11:320 min24 Dec
Dubai03:49 → 06:3311:540 min11:550 min24 Dec
Delhi05:19 → 08:0311:560 min11:570 min24 Dec
Kolkata05:19 → 08:0311:120 min11:130 min24 Dec
Singapore07:49 → 10:3312:400 min12:410 min24 Dec
Sydney10:49 → 13:3312:300 min12:3148 min25 Dec
Suva12:49 → 15:3312:410 min12:4248 min25 Dec
This ruling as JSON · ICS
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