Ruling · Akhaṇḍa Dvādaśī · 1997

Thursday 11 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 230 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 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 Thursday 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 18:41 on Wed 10 Dec to 16:25 on Thu 11 Dec.

    1997-12-10T10:41:21Z → 1997-12-11T08:24:54Z

  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 13780 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 1997: Thursday 11 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 1997 falls on Thursday 11 December. Dvādaśī runs from 18:41 on Wed 10 Dec to 16:25 on Thu 11 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1997/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 11 Dec
Ahargaṇa, classicalDisc centre, no refractionThu 11 Dec
compat-drikpanchangComparison profileThu 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 Angeles02:41 → 00:2511:2248 min11:220 min10 Dec
Chicago04:41 → 02:2511:1948 min11:200 min10 Dec
Jersey City05:41 → 03:2511:2548 min11:260 min10 Dec
Port of Spain06:41 → 04:2511:3548 min11:350 min10 Dec
London10:41 → 08:2511:2948 min11:300 min10 Dec
Durban12:41 → 10:2511:250 min11:250 min11 Dec
Dubai14:41 → 12:2511:470 min11:4837 min11 Dec
Delhi16:11 → 13:5511:500 min11:5048 min11 Dec
Kolkata16:11 → 13:5511:050 min11:0648 min11 Dec
Singapore18:41 → 16:2512:330 min12:3448 min11 Dec
Sydney21:41 → 19:2512:240 min12:2448 min11 Dec
Suva22:41 → 20:2511:350 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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