Ruling · Akhaṇḍa Dvādaśī · 1912

Saturday 21 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 384 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 20 December

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

0 of 48 minutes covered

Midday of Saturday 21 December

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

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 19:51 on Fri 20 Dec to 19:04 on Sat 21 Dec.

    1912-12-20T11:51:21Z → 1912-12-21T11:04:12Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 20th, 11:52–12:40 on the 21st.

    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 20th and 48 of 48 on the 21st.

    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 23044 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 1912: Saturday 21 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 1912 falls on Saturday 21 December. Dvādaśī runs from 19:51 on Fri 20 Dec to 19:04 on Sat 21 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1912/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 21 Dec
Ahargaṇa, classicalDisc centre, no refractionSat 21 Dec
compat-drikpanchangComparison profileSat 21 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles03:51 → 03:0411:2748 min11:270 min20 Dec
Chicago05:51 → 05:0411:2448 min11:250 min20 Dec
Jersey City06:51 → 06:0411:3048 min11:310 min20 Dec
Port of Spain07:51 → 07:0411:4048 min11:400 min20 Dec
London11:51 → 11:0411:3431 min11:350 min20 Dec
Durban13:51 → 13:0411:300 min11:3048 min21 Dec
Dubai15:32 → 14:4511:330 min11:3448 min21 Dec
Delhi17:21 → 16:3411:550 min11:5548 min21 Dec
Kolkata17:21 → 16:3411:100 min11:1148 min21 Dec
Singapore18:51 → 18:0411:380 min11:3948 min21 Dec
Sydney21:51 → 21:0411:290 min11:2948 min21 Dec
Suva23:46 → 22:5911:350 min11:3548 min21 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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