Ruling · Bhīṣma Dvādaśī · 1969

Wednesday 29 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 18 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 29 January

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

madhyāhna begins 12:08  12:56 madhyāhna ends
Dvādaśī begins 12:37:53
11:2011:4412:0812:3212:5613:2013:44

18 of 48 minutes covered, the last 18

Midday of Thursday 30 January

Qualifies with 48 of 48 minutes. Not taken.

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 12:38 on Wed 29 Jan to 15:08 on Thu 30 Jan.

    1969-01-29T04:37:53Z → 1969-01-30T07:07:43Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 29th, 12:08–12:56 on the 30th.

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

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 18 of 48 minutes on the 29th and 48 of 48 on the 30th.

    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 1057 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1969: Wednesday 29 January.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1969 falls on Wednesday 29 January. Dvādaśī runs from 12:38 on Wed 29 Jan to 15:08 on Thu 30 Jan and covers 18 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/1969/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 29 Jan
Ahargaṇa, classicalDisc centre, no refractionWed 29 Jan
compat-drikpanchangComparison profileWed 29 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 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles20:38 → 23:0811:4248 min11:430 min29 Jan
Chicago22:38 → 01:0811:4048 min11:400 min29 Jan
Jersey City23:38 → 02:0811:4648 min11:460 min29 Jan
Port of Spain00:38 → 03:0811:5548 min11:560 min29 Jan
London05:38 → 08:0812:5048 min12:500 min29 Jan
Durban06:38 → 09:0811:4548 min11:450 min29 Jan
Dubai08:38 → 11:0812:0848 min12:080 min29 Jan
Delhi10:08 → 12:3812:1048 min12:1127 min29 Jan
Kolkata10:08 → 12:3811:2648 min11:2648 min29 Jan
Singapore12:08 → 14:3812:2448 min12:2448 min29 Jan
Sydney14:38 → 17:0811:440 min11:4448 min30 Jan
Suva16:38 → 19:0811:550 min11:5548 min30 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

About Ahargaṇa