Ruling · Bhīṣma Dvādaśī · 2064

Thursday 31 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 32 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 30 January

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 Thursday 31 January

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:08  12:56 madhyāhna ends
Dvādaśī ends 13:27:36
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 14:54 on Wed 30 Jan to 13:28 on Thu 31 Jan.

    2064-01-30T06:54:05Z → 2064-01-31T05:27:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 30th, 12:08–12:56 on the 31st.

    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 30th and 48 of 48 on the 31st.

    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 1912 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 2064: Thursday 31 January.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 2064 falls on Thursday 31 January. Dvādaśī runs from 14:54 on Wed 30 Jan to 13:28 on Thu 31 Jan and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2064/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 31 Jan
Ahargaṇa, classicalDisc centre, no refractionThu 31 Jan
compat-drikpanchangComparison profileThu 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 Angeles22:54 → 21:2811:4248 min11:430 min30 Jan
Chicago00:54 → 23:2811:4048 min11:400 min30 Jan
Jersey City01:54 → 00:2811:4648 min11:460 min30 Jan
Port of Spain02:54 → 01:2811:5548 min11:560 min30 Jan
London06:54 → 05:2811:5048 min11:500 min30 Jan
Durban08:54 → 07:2811:4548 min11:450 min30 Jan
Dubai10:54 → 09:2812:0848 min12:080 min30 Jan
Delhi12:24 → 10:5812:1034 min12:110 min30 Jan
Kolkata12:24 → 10:5811:260 min11:260 min31 Jan
Singapore14:54 → 13:2812:540 min12:5434 min31 Jan
Sydney17:54 → 16:2812:440 min12:4448 min31 Jan
Suva18:54 → 17:2811:550 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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