Ruling · Akhaṇḍa Dvādaśī · 2029

Monday 17 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 550 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 16 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 Monday 17 December

Taken. The only midday Dvādaśī reaches.

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

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 21:48 on Sun 16 Dec to 00:25 on Tue 18 Dec.

    2029-12-16T13:48:08Z → 2029-12-17T16:25:14Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 16th, 11:50–12:38 on the 17th.

    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 16th and 48 of 48 on the 17th.

    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 33026 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 2029: Monday 17 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 2029 falls on Monday 17 December. Dvādaśī runs from 21:48 on Sun 16 Dec to 00:25 on Tue 18 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2029/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 17 Dec
Ahargaṇa, classicalDisc centre, no refractionMon 17 Dec
compat-drikpanchangComparison profileMon 17 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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles05:48 → 08:2511:2548 min11:250 min16 Dec
Chicago07:48 → 10:2511:2248 min11:230 min16 Dec
Jersey City08:48 → 11:2511:2848 min11:290 min16 Dec
Port of Spain09:48 → 12:2511:3848 min11:3847 min17 Dec
London13:48 → 16:2511:320 min11:3348 min17 Dec
Durban15:48 → 18:2511:280 min11:2848 min17 Dec
Dubai17:48 → 20:2511:500 min11:5148 min17 Dec
Delhi19:18 → 21:5511:530 min11:5348 min17 Dec
Kolkata19:18 → 21:5511:080 min11:0948 min17 Dec
Singapore21:48 → 00:2512:360 min12:3748 min17 Dec
Sydney00:48 → 03:2512:270 min12:2748 min17 Dec
Suva01:48 → 04:2511:380 min11:3848 min17 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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