Ruling · Bhīṣma Dvādaśī · 1963

Tuesday 5 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 588 minutes.

Decide it for

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 Monday 4 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

Midday of Tuesday 5 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

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 23:31 on Mon 4 Feb to 22:45 on Tue 5 Feb.

    1963-02-04T15:30:41Z → 1963-02-05T14:44:48Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 4th, 12:08–12:56 on the 5th.

    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 4th and 48 of 48 on the 5th.

    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 35304 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1963: Tuesday 5 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1963 falls on Tuesday 5 February. Dvādaśī runs from 23:31 on Mon 4 Feb to 22:45 on Tue 5 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1963/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 5 Feb
Ahargaṇa, classicalDisc centre, no refractionTue 5 Feb
compat-drikpanchangComparison profileTue 5 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 4thCoveredMadhyāhna 5thCoveredRuled
Los Angeles07:31 → 06:4511:4348 min11:430 min4 Feb
Chicago09:31 → 08:4511:4148 min11:410 min4 Feb
Jersey City10:31 → 09:4511:4748 min11:470 min4 Feb
Port of Spain11:31 → 10:4511:5648 min11:560 min4 Feb
London15:31 → 14:4511:510 min11:5148 min5 Feb
Durban17:31 → 16:4511:460 min11:4648 min5 Feb
Dubai19:31 → 18:4512:090 min12:0948 min5 Feb
Delhi21:01 → 20:1512:110 min12:1148 min5 Feb
Kolkata21:01 → 20:1511:270 min11:2748 min5 Feb
Singapore23:01 → 22:1512:250 min12:2548 min5 Feb
Sydney01:31 → 00:4511:450 min11:4548 min5 Feb
Suva03:31 → 02:4511:560 min11:5648 min5 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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