Ruling · Akhaṇḍa Dvādaśī · 1987

Wednesday 2 December

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 183 minutes.

Decide it for

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 Tuesday 1 December

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:43  12:31 madhyāhna ends
10:5511:1911:4312:0712:3112:5513:19

0 of 48 minutes covered

Midday of Wednesday 2 December

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:43  12:31 madhyāhna ends
10:5511:1911:4312:0712:3112:5513:19

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 16:08 on Tue 1 Dec to 15:35 on Wed 2 Dec.

    1987-12-01T08:08:26Z → 1987-12-02T07:34:37Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 1st, 11:43–12:31 on the 2nd.

    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 1st and 48 of 48 on the 2nd.

    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 11008 s

  5. 05

    Ruling

    Akhaṇḍa Dvādaśī, Baoding, 1987: Wednesday 2 December.

    confidence: determinate

Say it like this

In Baoding, Akhaṇḍa Dvādaśī 1987 falls on Wednesday 2 December. Dvādaśī runs from 16:08 on Tue 1 Dec to 15:35 on Wed 2 Dec and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1987/akhanda-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 2 Dec
Ahargaṇa, classicalDisc centre, no refractionWed 2 Dec
compat-drikpanchangComparison profileWed 2 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 1stCoveredMadhyāhna 2ndCoveredRuled
Los Angeles00:08 → 23:3511:1848 min11:180 min1 Dec
Chicago02:08 → 01:3511:1548 min11:160 min1 Dec
Jersey City03:08 → 02:3511:2148 min11:220 min1 Dec
Port of Spain04:08 → 03:3511:3148 min11:310 min1 Dec
London08:08 → 07:3511:2548 min11:260 min1 Dec
Durban10:08 → 09:3511:2148 min11:210 min1 Dec
Dubai12:08 → 11:3511:4423 min11:440 min1 Dec
Delhi13:38 → 13:0511:460 min11:4648 min2 Dec
Kolkata13:38 → 13:0511:010 min11:0248 min2 Dec
Singapore16:08 → 15:3512:290 min12:3048 min2 Dec
Sydney19:08 → 18:3512:200 min12:2048 min2 Dec
Suva20:08 → 19:3511:310 min11:3148 min2 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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