Ruling · Bhīṣma Dvādaśī · 1911

Friday 10 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 505 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 Friday 10 February

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:09  12:57 madhyāhna ends
11:2111:4512:0912:3312:5713:2113:45

48 of 48 minutes covered

Midday of Saturday 11 February

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:09  12:57 madhyāhna ends
11:2111:4512:0912:3312:5713:2113:45

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 03:44 on Fri 10 Feb to 01:15 on Sat 11 Feb.

    1911-02-09T19:44:08Z → 1911-02-10T17:15:26Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 10th, 12:09–12:57 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 48 of 48 minutes on the 10th and 0 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 30279 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1911: Friday 10 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1911 falls on Friday 10 February. Dvādaśī runs from 03:44 on Fri 10 Feb to 01:15 on Sat 11 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1911/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 10 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 10 Feb
compat-drikpanchangComparison profileFri 10 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles11:44 → 09:1511:4447 min11:440 min9 Feb
Chicago13:44 → 11:1511:410 min11:410 min10 Feb
Jersey City14:44 → 12:1511:470 min11:4728 min10 Feb
Port of Spain15:44 → 13:1511:570 min11:5748 min10 Feb
London19:44 → 17:1511:510 min11:5148 min10 Feb
Durban21:44 → 19:1511:460 min11:4648 min10 Feb
Dubai23:25 → 20:5611:500 min11:5048 min10 Feb
Delhi01:14 → 22:4512:120 min12:1248 min10 Feb
Kolkata01:14 → 22:4511:270 min11:2748 min10 Feb
Singapore02:44 → 00:1511:550 min11:5548 min10 Feb
Sydney05:44 → 03:1511:450 min11:4548 min10 Feb
Suva07:39 → 05:1011:520 min11:5248 min10 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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