Ruling · Bhīṣma Dvādaśī · 1907

Friday 25 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 14 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 25 January

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

madhyāhna begins 12:07  12:55 madhyāhna ends
Dvādaśī begins 12:40:40
11:1911:4312:0712:3112:5513:1913:43

14 of 48 minutes covered, the last 14

Midday of Saturday 26 January

Qualifies with 48 of 48 minutes. Not taken.

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

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 12:41 on Fri 25 Jan to 15:19 on Sat 26 Jan.

    1907-01-25T04:40:40Z → 1907-01-26T07:19:01Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 25th, 12:07–12:55 on the 26th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 14 of 48 minutes on the 25th and 48 of 48 on the 26th.

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

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 834 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1907: Friday 25 January.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1907 falls on Friday 25 January. Dvādaśī runs from 12:41 on Fri 25 Jan to 15:19 on Sat 26 Jan and covers 14 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.

ahargana.org/baoding/festivals/1907/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 25 Jan
Ahargaṇa, classicalDisc centre, no refractionFri 25 Jan
compat-drikpanchangComparison profileFri 25 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 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles20:41 → 23:1911:4248 min11:420 min25 Jan
Chicago22:41 → 01:1911:3948 min11:390 min25 Jan
Jersey City23:41 → 02:1911:4548 min11:450 min25 Jan
Port of Spain00:41 → 03:1911:5448 min11:550 min25 Jan
London04:41 → 07:1911:4948 min11:490 min25 Jan
Durban06:41 → 09:1911:4448 min11:440 min25 Jan
Dubai08:22 → 11:0011:4848 min11:480 min25 Jan
Delhi10:11 → 12:4912:0948 min12:1039 min25 Jan
Kolkata10:11 → 12:4911:2548 min11:2548 min25 Jan
Singapore11:41 → 14:1911:5348 min11:5348 min25 Jan
Sydney14:41 → 17:1911:430 min11:4348 min26 Jan
Suva16:36 → 19:1411:490 min11:5048 min26 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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