Ruling · Akhaṇḍa Dvādaśī · 2013

Saturday 14 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 9 min 49 s.

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 Friday 13 December

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

48 of 48 minutes covered

Midday of Saturday 14 December

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

madhyāhna begins 11:49  12:37 madhyāhna ends
Dvādaśī ends 11:58:30
11:0111:2511:4912:1312:3713:0113:25

10 of 48 minutes covered, the first 10

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 10:52 on Fri 13 Dec to 11:59 on Sat 14 Dec.

    2013-12-13T02:51:31Z → 2013-12-14T03:58:30Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 13th, 11:49–12:37 on the 14th.

    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 13th and 10 of 48 on the 14th.

    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 589 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 2013: Saturday 14 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 2013 falls on Saturday 14 December. Dvādaśī runs from 10:52 on Fri 13 Dec to 11:59 on Sat 14 Dec and covers 10 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.

ahargana.org/baoding/festivals/2013/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 14 Dec
Ahargaṇa, classicalDisc centre, no refractionSat 14 Dec
compat-drikpanchangComparison profileSat 14 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 13thCoveredMadhyāhna 14thCoveredRuled
Los Angeles18:52 → 19:5911:2348 min11:240 min13 Dec
Chicago20:52 → 21:5911:2148 min11:210 min13 Dec
Jersey City21:52 → 22:5911:2748 min11:270 min13 Dec
Port of Spain22:52 → 23:5911:3648 min11:370 min13 Dec
London02:52 → 03:5911:3148 min11:310 min13 Dec
Durban04:52 → 05:5911:2648 min11:270 min13 Dec
Dubai06:52 → 07:5911:4948 min11:490 min13 Dec
Delhi08:22 → 09:2911:5148 min11:520 min13 Dec
Kolkata08:22 → 09:2911:0748 min11:070 min13 Dec
Singapore10:52 → 11:5912:3548 min12:350 min13 Dec
Sydney13:52 → 14:5912:250 min12:2648 min14 Dec
Suva15:52 → 16:5912:360 min12:3748 min14 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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