Ruling · Bhīṣma Dvādaśī · 2010

Wednesday 27 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 528 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 27 January

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:07  12:55 madhyāhna ends
11:1911:4312:0712:3112:5513:1913:43

48 of 48 minutes covered

Midday of Thursday 28 January

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:07  12:55 madhyāhna ends
11:1911:4312:0712:3112:5513:1913:43

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 03:19 on Wed 27 Jan to 00:42 on Thu 28 Jan.

    2010-01-26T19:19:21Z → 2010-01-27T16:42:28Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 27th, 12:07–12:55 on the 28th.

    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 27th and 0 of 48 on the 28th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: purvaviddha → only-day · margin 31660 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 2010: Wednesday 27 January.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 2010 falls on Wednesday 27 January. Dvādaśī runs from 03:19 on Wed 27 Jan to 00:42 on Thu 28 Jan and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2010/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 27 Jan
Ahargaṇa, classicalDisc centre, no refractionWed 27 Jan
compat-drikpanchangComparison profileWed 27 Jan
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/bhishma-dvadashi · ruleset 2026.3-draft

Month
Māgha, amānta
Pakṣa · aṅga
Śukla · Dvādaśī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 105

“S 12 Bhisma dvadasi (purvaviddha), Amalaki dvadasi, Santana dvadasi, Varaha dvadasi” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvādaśīMadhyāhna 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles11:19 → 08:4211:4248 min11:420 min26 Jan
Chicago13:19 → 10:4211:390 min11:400 min27 Jan
Jersey City14:19 → 11:4211:450 min11:450 min27 Jan
Port of Spain15:19 → 12:4211:550 min11:5548 min27 Jan
London19:19 → 16:4211:490 min11:5048 min27 Jan
Durban21:19 → 18:4211:440 min11:4448 min27 Jan
Dubai23:19 → 20:4212:070 min12:0848 min27 Jan
Delhi00:49 → 22:1212:100 min12:1048 min27 Jan
Kolkata00:49 → 22:1211:250 min11:2548 min27 Jan
Singapore03:19 → 00:4212:530 min12:5348 min27 Jan
Sydney06:19 → 03:4212:430 min12:4448 min27 Jan
Suva08:19 → 05:4212:550 min12:5548 min27 Jan
Profile · tradition
pac-rp@2026.1 · smarta
Rule
bhishma-dvadashi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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