Ruling · Akhaṇḍa Dvādaśī · 2099

Thursday 24 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 377 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 23 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 24 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 18:59 on Wed 23 Dec to 20:26 on Thu 24 Dec.

    2099-12-23T10:58:45Z → 2099-12-24T12:25:42Z

  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 48 of 48 on the 24th.

    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 22640 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 2099: Thursday 24 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 2099 falls on Thursday 24 December. Dvādaśī runs from 18:59 on Wed 23 Dec to 20:26 on Thu 24 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2099/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 24 Dec
Ahargaṇa, classicalDisc centre, no refractionThu 24 Dec
compat-drikpanchangComparison profileThu 24 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 Angeles02:59 → 04:2611:2948 min11:290 min23 Dec
Chicago04:59 → 06:2611:2648 min11:270 min23 Dec
Jersey City05:59 → 07:2611:3248 min11:320 min23 Dec
Port of Spain06:59 → 08:2611:4248 min11:420 min23 Dec
London10:59 → 12:2611:3648 min11:3648 min24 Dec
Durban12:59 → 14:2611:310 min11:3248 min24 Dec
Dubai14:59 → 16:2611:540 min11:5548 min24 Dec
Delhi16:29 → 17:5611:560 min11:5748 min24 Dec
Kolkata16:29 → 17:5611:120 min11:1248 min24 Dec
Singapore18:59 → 20:2612:400 min12:4048 min24 Dec
Sydney21:59 → 23:2612:300 min12:3148 min24 Dec
Suva22:59 → 00:2611:410 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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