Ruling · Akhaṇḍa Dvādaśī · 2010

Saturday 18 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 258 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 Friday 17 December

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:50  12:38 madhyāhna ends
11:0211:2611:5012:1412:3813:0213:26

0 of 48 minutes covered

Midday of Saturday 18 December

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

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 16:56 on Fri 17 Dec to 17:42 on Sat 18 Dec.

    2010-12-17T08:56:16Z → 2010-12-18T09:42:30Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 17th, 11:51–12:39 on the 18th.

    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 17th and 48 of 48 on the 18th.

    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 15494 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 2010: Saturday 18 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 2010 falls on Saturday 18 December. Dvādaśī runs from 16:56 on Fri 17 Dec to 17:42 on Sat 18 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2010/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 18 Dec
Ahargaṇa, classicalDisc centre, no refractionSat 18 Dec
compat-drikpanchangComparison profileSat 18 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles00:56 → 01:4211:2548 min11:260 min17 Dec
Chicago02:56 → 03:4211:2348 min11:230 min17 Dec
Jersey City03:56 → 04:4211:2848 min11:290 min17 Dec
Port of Spain04:56 → 05:4211:3848 min11:390 min17 Dec
London08:56 → 09:4211:3348 min11:330 min17 Dec
Durban10:56 → 11:4211:2848 min11:2814 min18 Dec
Dubai12:56 → 13:4211:510 min11:5148 min18 Dec
Delhi14:26 → 15:1211:530 min11:5448 min18 Dec
Kolkata14:26 → 15:1211:080 min11:0948 min18 Dec
Singapore16:56 → 17:4212:370 min12:3748 min18 Dec
Sydney19:56 → 20:4212:270 min12:2848 min18 Dec
Suva21:56 → 22:4212:380 min12:3948 min18 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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