Ruling · Bhīṣma Dvādaśī · 1900

Sunday 11 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 51 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 10 February

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:14  13:02 madhyāhna ends
11:2611:5012:1412:3813:0213:2613:50

0 of 48 minutes covered

Midday of Sunday 11 February

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:14  13:02 madhyāhna ends
11:2611:5012:1412:3813:0213:2613:50

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 13:53 on Sat 10 Feb to 15:28 on Sun 11 Feb.

    1900-02-10T05:47:52Z → 1900-02-11T07:23:19Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:14–13:02 on the 10th, 12:14–13:02 on the 11th.

    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 10th and 48 of 48 on the 11th.

    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 3061 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1900: Sunday 11 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1900 falls on Sunday 11 February. Dvādaśī runs from 13:53 on Sat 10 Feb to 15:28 on Sun 11 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1900/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 11 Feb
Ahargaṇa, classicalDisc centre, no refractionSun 11 Feb
compat-drikpanchangComparison profileSun 11 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 10thCoveredMadhyāhna 11thCoveredRuled
Los Angeles21:48 → 23:2311:4448 min11:440 min10 Feb
Chicago23:48 → 01:2311:4148 min11:410 min10 Feb
Jersey City00:48 → 02:2311:4748 min11:470 min10 Feb
Port of Spain01:48 → 03:2311:5748 min11:570 min10 Feb
London05:48 → 07:2311:5148 min11:510 min10 Feb
Durban07:18 → 08:5311:1648 min11:160 min10 Feb
Dubai09:29 → 11:0411:5048 min11:500 min10 Feb
Delhi11:09 → 12:4412:0348 min12:0342 min10 Feb
Kolkata11:09 → 12:4411:1848 min11:1848 min10 Feb
Singapore12:43 → 14:1811:500 min11:5048 min11 Feb
Sydney15:48 → 17:2311:450 min11:4548 min11 Feb
Suva17:43 → 19:1811:520 min11:5248 min11 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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