Ruling · Bhīṣma Dvādaśī · 1912

Wednesday 31 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 366 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 Tuesday 30 January

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:08  12:56 madhyāhna ends
11:2011:4412:0812:3212:5613:2013:44

0 of 48 minutes covered

Midday of Wednesday 31 January

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:08  12:56 madhyāhna ends
11:2011:4412:0812:3212:5613:2013:44

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 22:15 on Tue 30 Jan to 19:02 on Wed 31 Jan.

    1912-01-30T14:14:33Z → 1912-01-31T11:01:41Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 30th, 12:08–12:56 on the 31st.

    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 30th and 48 of 48 on the 31st.

    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 21953 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1912: Wednesday 31 January.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1912 falls on Wednesday 31 January. Dvādaśī runs from 22:15 on Tue 30 Jan to 19:02 on Wed 31 Jan and covers all of madhyāhna that midday.

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

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 31 Jan
Ahargaṇa, classicalDisc centre, no refractionWed 31 Jan
compat-drikpanchangComparison profileWed 31 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 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles06:15 → 03:0211:4348 min11:430 min30 Jan
Chicago08:15 → 05:0211:4048 min11:400 min30 Jan
Jersey City09:15 → 06:0211:4648 min11:460 min30 Jan
Port of Spain10:15 → 07:0211:5548 min11:560 min30 Jan
London14:15 → 11:0211:500 min11:500 min31 Jan
Durban16:15 → 13:0211:450 min11:4548 min31 Jan
Dubai17:56 → 14:4311:490 min11:4948 min31 Jan
Delhi19:45 → 16:3212:110 min12:1148 min31 Jan
Kolkata19:45 → 16:3211:260 min11:2648 min31 Jan
Singapore21:15 → 18:0211:540 min11:5448 min31 Jan
Sydney00:15 → 21:0211:440 min11:4448 min31 Jan
Suva02:10 → 22:5711:500 min11:5148 min31 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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