Ruling · Akhaṇḍa Dvādaśī · 1929

Friday 13 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 343 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 13 December

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

48 of 48 minutes covered

Midday of Saturday 14 December

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

0 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 06:05 on Fri 13 Dec to 04:23 on Sat 14 Dec.

    1929-12-12T22:05:15Z → 1929-12-13T20:23:22Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 13th, 11:49–12:37 on the 14th.

    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 13th and 0 of 48 on the 14th.

    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 20571 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 1929: Friday 13 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 1929 falls on Friday 13 December. Dvādaśī runs from 06:05 on Fri 13 Dec to 04:23 on Sat 14 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1929/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 13 Dec
Ahargaṇa, classicalDisc centre, no refractionFri 13 Dec
compat-drikpanchangComparison profileFri 13 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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles14:05 → 12:2311:230 min11:2348 min13 Dec
Chicago16:05 → 14:2311:200 min11:2148 min13 Dec
Jersey City17:05 → 15:2311:260 min11:2748 min13 Dec
Port of Spain18:05 → 16:2311:360 min11:3648 min13 Dec
London22:05 → 20:2311:300 min11:3148 min13 Dec
Durban00:05 → 22:2311:260 min11:2648 min13 Dec
Dubai02:05 → 00:2311:480 min11:4948 min13 Dec
Delhi03:35 → 01:5311:510 min11:5148 min13 Dec
Kolkata03:35 → 01:5311:060 min11:0748 min13 Dec
Singapore05:05 → 03:2311:340 min11:3548 min13 Dec
Sydney08:05 → 06:2311:250 min11:2548 min13 Dec
Suva10:05 → 08:2311:360 min11:3648 min13 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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