Ruling · Akhaṇḍa Dvādaśī · 2019

Monday 9 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 10 minutes.

Decide it for

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 8 December

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:46  12:34 madhyāhna ends
Dvādaśī begins 10:59:36
10:5811:2211:4612:1012:3412:5813:22

48 of 48 minutes covered

Midday of Monday 9 December

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

madhyāhna begins 11:46  12:34 madhyāhna ends
Dvādaśī ends 12:23:57
10:5811:2211:4612:1012:3412:5813:22

38 of 48 minutes covered, the first 38

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 11:00 on Sun 8 Dec to 12:24 on Mon 9 Dec.

    2019-12-08T02:59:37Z → 2019-12-09T04:23:57Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 8th, 11:46–12:34 on the 9th.

    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 8th and 38 of 48 on the 9th.

    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 610 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 2019: Monday 9 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 2019 falls on Monday 9 December. Dvādaśī runs from 11:00 on Sun 8 Dec to 12:24 on Mon 9 Dec and covers 38 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/2019/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 9 Dec
Ahargaṇa, classicalDisc centre, no refractionMon 9 Dec
compat-drikpanchangComparison profileMon 9 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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles19:00 → 20:2411:2148 min11:210 min8 Dec
Chicago21:00 → 22:2411:1848 min11:190 min8 Dec
Jersey City22:00 → 23:2411:2448 min11:250 min8 Dec
Port of Spain23:00 → 00:2411:3448 min11:340 min8 Dec
London03:00 → 04:2411:2848 min11:290 min8 Dec
Durban05:00 → 06:2411:2448 min11:240 min8 Dec
Dubai07:00 → 08:2411:4648 min11:470 min8 Dec
Delhi08:30 → 09:5411:4948 min11:490 min8 Dec
Kolkata08:30 → 09:5411:0448 min11:050 min8 Dec
Singapore11:00 → 12:2412:3248 min12:330 min8 Dec
Sydney14:00 → 15:2412:230 min12:2348 min9 Dec
Suva16:00 → 17:2412:340 min12:3448 min9 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

About Ahargaṇa