Ruling · Bhīṣma Dvādaśī · 2069

Sunday 3 February

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 2 min 19 s away. Say “contested”.

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 Saturday 2 February

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:08  12:56 madhyāhna ends
Dvādaśī begins 13:24:53
11:2011:4412:0812:3212:5613:2013:44

0 of 48 minutes covered

Midday of Sunday 3 February

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:08  12:56 madhyāhna ends
Dvādaśī ends 12:53:55
11:2011:4412:0812:3212:5613:2013:44

46 of 48 minutes covered, the first 46

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 13:25 on Sat 2 Feb to 12:54 on Sun 3 Feb.

    2069-02-02T05:24:54Z → 2069-02-03T04:53:56Z

  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 46 of 48 on the 3rd.

    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 139 s < 300 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 2069: Sunday 3 February.

    confidence: boundary (margin)

Say it like this

In Baoding, Bhīṣma Dvādaśī 2069 falls on Sunday 3 February. Dvādaśī runs from 13:25 on Sat 2 Feb to 12:54 on Sun 3 Feb and covers 46 of 48 minutes of madhyāhna that midday. It is 2 min 19 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2069/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 3 Feb
Ahargaṇa, classicalDisc centre, no refractionSun 3 Feb
compat-drikpanchangComparison profileSat 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 Angeles21:25 → 20:5411:4348 min11:430 min2 Feb
Chicago23:25 → 22:5411:4148 min11:410 min2 Feb
Jersey City00:25 → 23:5411:4648 min11:460 min2 Feb
Port of Spain01:25 → 00:5411:5648 min11:560 min2 Feb
London05:25 → 04:5411:5148 min11:510 min2 Feb
Durban07:25 → 06:5411:4548 min11:460 min2 Feb
Dubai09:25 → 08:5412:0948 min12:090 min2 Feb
Delhi10:55 → 10:2412:1148 min12:110 min2 Feb
Kolkata10:55 → 10:2411:2648 min11:270 min2 Feb
Singapore13:25 → 12:5412:5417 min12:540 min2 Feb
Sydney16:25 → 15:5412:450 min12:4548 min3 Feb
Suva17:25 → 16:5411:560 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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