Ruling · Akhaṇḍa Dvādaśī · 1907

Monday 16 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 480 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 15 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

Midday of Monday 16 December

Taken. The only midday Dvādaśī reaches.

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

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 20:37 on Sun 15 Dec to 21:17 on Mon 16 Dec.

    1907-12-15T12:37:09Z → 1907-12-16T13:16:35Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 15th, 11:49–12:37 on the 16th.

    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 15th and 48 of 48 on the 16th.

    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 28823 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 1907: Monday 16 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 1907 falls on Monday 16 December. Dvādaśī runs from 20:37 on Sun 15 Dec to 21:17 on Mon 16 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1907/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 16 Dec
Ahargaṇa, classicalDisc centre, no refractionMon 16 Dec
compat-drikpanchangComparison profileMon 16 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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles04:37 → 05:1711:2448 min11:240 min15 Dec
Chicago06:37 → 07:1711:2148 min11:220 min15 Dec
Jersey City07:37 → 08:1711:2748 min11:280 min15 Dec
Port of Spain08:37 → 09:1711:3748 min11:370 min15 Dec
London12:37 → 13:1711:310 min11:3248 min16 Dec
Durban14:37 → 15:1711:270 min11:2748 min16 Dec
Dubai16:18 → 16:5811:300 min11:3148 min16 Dec
Delhi18:07 → 18:4711:520 min11:5248 min16 Dec
Kolkata18:07 → 18:4711:070 min11:0848 min16 Dec
Singapore19:37 → 20:1711:350 min11:3648 min16 Dec
Sydney22:37 → 23:1711:260 min11:2648 min16 Dec
Suva00:32 → 01:1211:320 min11:3248 min16 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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