Ruling · Bhīṣma Dvādaśī · 1920

Sunday 1 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 499 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 Sunday 1 February

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

Midday of Monday 2 February

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

Dvādaśī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 03:49 on Sun 1 Feb to 01:01 on Mon 2 Feb.

    1920-01-31T19:49:16Z → 1920-02-01T17:01:00Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 1st, 12:08–12:56 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 48 of 48 minutes on the 1st and 0 of 48 on the 2nd.

    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 29920 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1920: Sunday 1 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1920 falls on Sunday 1 February. Dvādaśī runs from 03:49 on Sun 1 Feb to 01:01 on Mon 2 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1920/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 1 Feb
Ahargaṇa, classicalDisc centre, no refractionSun 1 Feb
compat-drikpanchangComparison profileSun 1 Feb
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 31stCoveredMadhyāhna 1stCoveredRuled
Los Angeles11:49 → 09:0111:4341 min11:430 min31 Jan
Chicago13:49 → 11:0111:400 min11:400 min1 Feb
Jersey City14:49 → 12:0111:460 min11:4615 min1 Feb
Port of Spain15:49 → 13:0111:560 min11:5648 min1 Feb
London19:49 → 17:0111:500 min11:5048 min1 Feb
Durban21:49 → 19:0111:450 min11:4548 min1 Feb
Dubai23:49 → 21:0112:080 min12:0848 min1 Feb
Delhi01:19 → 22:3112:110 min12:1148 min1 Feb
Kolkata01:19 → 22:3111:260 min11:2648 min1 Feb
Singapore02:49 → 00:0111:540 min11:5448 min1 Feb
Sydney05:49 → 03:0111:440 min11:4448 min1 Feb
Suva07:49 → 05:0111:560 min11:5648 min1 Feb
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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