Ruling · Bhīṣma Dvādaśī · 2011

Tuesday 15 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 520 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 Tuesday 15 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 Wednesday 16 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 03:28 on Tue 15 Feb to 01:40 on Wed 16 Feb.

    2011-02-14T19:28:19Z → 2011-02-15T17:40:12Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 15th, 12:09–12:57 on the 16th.

    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 15th and 0 of 48 on the 16th.

    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 31215 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 2011: Tuesday 15 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 2011 falls on Tuesday 15 February. Dvādaśī runs from 03:28 on Tue 15 Feb to 01:40 on Wed 16 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2011/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 15 Feb
Ahargaṇa, classicalDisc centre, no refractionTue 15 Feb
compat-drikpanchangComparison profileTue 15 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 14thCoveredMadhyāhna 15thCoveredRuled
Los Angeles11:28 → 09:4011:4348 min11:430 min14 Feb
Chicago13:28 → 11:4011:410 min11:410 min15 Feb
Jersey City14:28 → 12:4011:470 min11:4748 min15 Feb
Port of Spain15:28 → 13:4011:560 min11:5648 min15 Feb
London19:28 → 17:4011:510 min11:5148 min15 Feb
Durban21:28 → 19:4011:460 min11:4648 min15 Feb
Dubai23:28 → 21:4012:090 min12:0948 min15 Feb
Delhi00:58 → 23:1012:110 min12:1148 min15 Feb
Kolkata00:58 → 23:1011:270 min11:2748 min15 Feb
Singapore03:28 → 01:4012:550 min12:5548 min15 Feb
Sydney06:28 → 04:4012:450 min12:4548 min15 Feb
Suva08:28 → 06:4012:560 min12:5648 min15 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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