Ruling · Akhaṇḍa Dvādaśī · 2046

Monday 10 December

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 0 min 32 s away. Say “contested”.

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 Sunday 9 December

Qualifies with 1 of 48 minutes. Not taken.

madhyāhna begins 11:46  12:34 madhyāhna ends
Dvādaśī begins 12:33:46
10:5811:2211:4612:1012:3412:5813:22

1 of 48 minutes covered, the last 1

Midday of Monday 10 December

Taken. Both middays qualify; the rule takes the second.

madhyāhna begins 11:47  12:35 madhyāhna ends
10:5911:2311:4712:1112:3512:5913:23

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 12:34 on Sun 9 Dec to 14:36 on Mon 10 Dec.

    2046-12-09T04:33:47Z → 2046-12-10T06:35:34Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 9th, 11:47–12:35 on the 10th.

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

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 1 of 48 minutes on the 9th and 48 of 48 on the 10th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Both middays qualify. Paraviddhā: the second is taken.

    priority: paraviddha → paraviddha · margin 32 s < 300 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 2046: Monday 10 December.

    confidence: boundary (margin)

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 2046 falls on Monday 10 December. Dvādaśī runs from 12:34 on Sun 9 Dec to 14:36 on Mon 10 Dec and covers all of madhyāhna that midday. It also reaches the previous midday for 1 minutes; by the rule the second midday is taken. It is 0 min 32 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2046/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 10 Dec
Ahargaṇa, classicalDisc centre, no refractionMon 10 Dec
compat-drikpanchangComparison profileMon 10 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles20:34 → 22:3611:2148 min11:220 min9 Dec
Chicago22:34 → 00:3611:1948 min11:190 min9 Dec
Jersey City23:34 → 01:3611:2548 min11:250 min9 Dec
Port of Spain00:34 → 02:3611:3548 min11:350 min9 Dec
London04:34 → 06:3611:2948 min11:290 min9 Dec
Durban06:34 → 08:3611:2448 min11:250 min9 Dec
Dubai08:34 → 10:3611:4748 min11:470 min9 Dec
Delhi10:04 → 12:0611:4948 min11:5016 min10 Dec
Kolkata10:04 → 12:0611:0548 min11:0548 min10 Dec
Singapore12:34 → 14:3612:3347 min12:3348 min10 Dec
Sydney15:34 → 17:3612:230 min12:2448 min10 Dec
Suva16:34 → 18:3611:350 min11:3548 min10 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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