Ruling · Akhaṇḍa Dvādaśī · 1978

Monday 11 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 314 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 Sunday 10 December

Dvādaśī is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Monday 11 December

Taken. The only midday Dvādaśī reaches.

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 17:48 on Sun 10 Dec to 17:55 on Mon 11 Dec.

    1978-12-10T09:48:27Z → 1978-12-11T09:55:10Z

  2. 02

    Kāla

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

    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 10th and 48 of 48 on the 11th.

    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 18828 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 1978: Monday 11 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 1978 falls on Monday 11 December. Dvādaśī runs from 17:48 on Sun 10 Dec to 17:55 on Mon 11 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1978/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 11 Dec
Ahargaṇa, classicalDisc centre, no refractionMon 11 Dec
compat-drikpanchangComparison profileMon 11 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 10thCoveredMadhyāhna 11thCoveredRuled
Los Angeles01:48 → 01:5511:2248 min11:220 min10 Dec
Chicago03:48 → 03:5511:1948 min11:200 min10 Dec
Jersey City04:48 → 04:5511:2548 min11:260 min10 Dec
Port of Spain05:48 → 05:5511:3548 min11:350 min10 Dec
London09:48 → 09:5511:2948 min11:300 min10 Dec
Durban11:48 → 11:5511:2524 min11:2530 min11 Dec
Dubai13:48 → 13:5511:470 min11:4848 min11 Dec
Delhi15:18 → 15:2511:500 min11:5048 min11 Dec
Kolkata15:18 → 15:2511:050 min11:0648 min11 Dec
Singapore17:18 → 17:2512:030 min12:0448 min11 Dec
Sydney20:48 → 20:5512:240 min12:2448 min11 Dec
Suva21:48 → 21:5511:350 min11:3548 min11 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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