Ruling · Bhīṣma Dvādaśī · 2015

Saturday 31 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 620 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 Saturday 31 January

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 Sunday 1 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 00:44 on Sat 31 Jan to 01:47 on Sun 1 Feb.

    2015-01-30T16:44:11Z → 2015-01-31T17:47:30Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 31st, 12:08–12:56 on the 1st.

    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 31st and 0 of 48 on the 1st.

    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 37221 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 2015: Saturday 31 January.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 2015 falls on Saturday 31 January. Dvādaśī runs from 00:44 on Sat 31 Jan to 01:47 on Sun 1 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2015/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 31 Jan
Ahargaṇa, classicalDisc centre, no refractionSat 31 Jan
compat-drikpanchangComparison profileSat 31 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 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles08:44 → 09:4711:4248 min11:430 min30 Jan
Chicago10:44 → 11:4711:4048 min11:407 min30 Jan
Jersey City11:44 → 12:4711:4648 min11:4648 min30 Jan
Port of Spain12:44 → 13:4711:550 min11:5648 min31 Jan
London16:44 → 17:4711:500 min11:5048 min31 Jan
Durban18:44 → 19:4711:450 min11:4548 min31 Jan
Dubai20:44 → 21:4712:080 min12:0848 min31 Jan
Delhi22:14 → 23:1712:100 min12:1148 min31 Jan
Kolkata22:14 → 23:1711:260 min11:2648 min31 Jan
Singapore00:44 → 01:4712:540 min12:5448 min31 Jan
Sydney03:44 → 04:4712:440 min12:4448 min31 Jan
Suva04:44 → 05:4711:550 min11:5648 min31 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

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