Ruling · Akhaṇḍa Dvādaśī · 1977

Thursday 22 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 35 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 Wednesday 21 December

Qualifies with 48 of 48 minutes. Not taken.

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

48 of 48 minutes covered

Midday of Thursday 22 December

Taken. Both middays qualify; the rule takes the second.

madhyāhna begins 11:53  12:41 madhyāhna ends
Dvādaśī ends 13:16:03
11:0511:2911:5312:1712:4113:0513:29

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 10:59 on Wed 21 Dec to 13:16 on Thu 22 Dec.

    1977-12-21T02:58:53Z → 1977-12-22T05:16:04Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 21st, 11:53–12:41 on the 22nd.

    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 21st and 48 of 48 on the 22nd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Both middays qualify. Paraviddhā: the second is taken.

    priority: paraviddha → paraviddha · margin 2127 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 1977: Thursday 22 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 1977 falls on Thursday 22 December. Dvādaśī runs from 10:59 on Wed 21 Dec to 13:16 on Thu 22 Dec and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.

ahargana.org/baoding/festivals/1977/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 22 Dec
Ahargaṇa, classicalDisc centre, no refractionThu 22 Dec
compat-drikpanchangComparison profileThu 22 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 21stCoveredMadhyāhna 22ndCoveredRuled
Los Angeles18:59 → 21:1611:2748 min11:280 min21 Dec
Chicago20:59 → 23:1611:2548 min11:250 min21 Dec
Jersey City21:59 → 00:1611:3148 min11:310 min21 Dec
Port of Spain22:59 → 01:1611:4048 min11:410 min21 Dec
London02:59 → 05:1611:3548 min11:350 min21 Dec
Durban04:59 → 07:1611:3048 min11:300 min21 Dec
Dubai06:59 → 09:1611:5348 min11:530 min21 Dec
Delhi08:29 → 10:4611:5548 min11:560 min21 Dec
Kolkata08:29 → 10:4611:1148 min11:110 min21 Dec
Singapore10:29 → 12:4612:0948 min12:0937 min22 Dec
Sydney13:59 → 16:1612:290 min12:3048 min22 Dec
Suva14:59 → 17:1611:400 min11:4148 min22 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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