Ruling · Bhīṣma Dvādaśī · 1966

Thursday 3 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 12 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 2 February

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:08  12:56 madhyāhna ends
Dvādaśī begins 13:08:29
11:2011:4412:0812:3212:5613:2013:44

0 of 48 minutes covered

Midday of Thursday 3 February

Taken. Dvādaśī reaches neither midday; the rule takes the second day.

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 13:08 on Wed 2 Feb to 10:36 on Thu 3 Feb.

    1966-02-02T05:08:30Z → 1966-02-03T02:36:00Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 2nd, 12:08–12:56 on the 3rd.

    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 2nd and 0 of 48 on the 3rd.

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

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: purvaviddha → second-day · margin 745 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1966: Thursday 3 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1966 falls on Thursday 3 February. Dvādaśī runs from 13:08 on Wed 2 Feb to 10:36 on Thu 3 Feb, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/1966/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 3 Feb
Ahargaṇa, classicalDisc centre, no refractionThu 3 Feb
compat-drikpanchangComparison profileWed 2 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 2ndCoveredMadhyāhna 3rdCoveredRuled
Los Angeles21:08 → 18:3611:4348 min11:430 min2 Feb
Chicago23:08 → 20:3611:4148 min11:410 min2 Feb
Jersey City00:08 → 21:3611:4648 min11:460 min2 Feb
Port of Spain01:08 → 22:3611:5648 min11:560 min2 Feb
London05:08 → 02:3611:5148 min11:510 min2 Feb
Durban07:08 → 04:3611:4548 min11:460 min2 Feb
Dubai09:08 → 06:3612:0948 min12:090 min2 Feb
Delhi10:38 → 08:0612:1148 min12:110 min2 Feb
Kolkata10:38 → 08:0611:2648 min11:270 min2 Feb
Singapore12:38 → 10:0612:2434 min12:240 min2 Feb
Sydney15:08 → 12:3611:450 min11:4548 min3 Feb
Suva17:08 → 14:3611:560 min11:5648 min3 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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