Ruling · Bhīṣma Dvādaśī · 2018

Sunday 28 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 69 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 Sunday 28 January

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:07  12:55 madhyāhna ends
11:1911:4312:0712:3112:5513:1913:43

48 of 48 minutes covered

Midday of Monday 29 January

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:07  12:55 madhyāhna ends
11:1911:4312:0712:3112:5513:1913:43

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 10:58 on Sun 28 Jan to 07:48 on Mon 29 Jan.

    2018-01-28T02:57:57Z → 2018-01-28T23:48:01Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 28th, 12:07–12:55 on the 29th.

    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 28th and 0 of 48 on the 29th.

    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 4156 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 2018: Sunday 28 January.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 2018 falls on Sunday 28 January. Dvādaśī runs from 10:58 on Sun 28 Jan to 07:48 on Mon 29 Jan and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2018/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 28 Jan
Ahargaṇa, classicalDisc centre, no refractionSun 28 Jan
compat-drikpanchangComparison profileSun 28 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 28thCoveredMadhyāhna 29thCoveredRuled
Los Angeles18:58 → 15:4811:4248 min11:420 min28 Jan
Chicago20:58 → 17:4811:4048 min11:400 min28 Jan
Jersey City21:58 → 18:4811:4548 min11:460 min28 Jan
Port of Spain22:58 → 19:4811:5548 min11:550 min28 Jan
London02:58 → 23:4811:5048 min11:500 min28 Jan
Durban04:58 → 01:4811:4548 min11:450 min28 Jan
Dubai06:58 → 03:4812:0848 min12:080 min28 Jan
Delhi08:28 → 05:1812:1048 min12:100 min28 Jan
Kolkata08:28 → 05:1811:2648 min11:260 min28 Jan
Singapore10:58 → 07:4812:5348 min12:540 min28 Jan
Sydney13:58 → 10:4812:440 min12:440 min29 Jan
Suva14:58 → 11:4811:550 min11:550 min29 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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