Ruling · Bhīṣma Dvādaśī · 2003

Thursday 13 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 15 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 Thursday 13 February

Taken. Both middays qualify; the rule takes the first.

madhyāhna begins 12:09  12:57 madhyāhna ends
Dvādaśī begins 12:41:28
11:2111:4512:0912:3312:5713:2113:45

15 of 48 minutes covered, the last 15

Midday of Friday 14 February

Qualifies with 25 of 48 minutes. Not taken.

madhyāhna begins 12:09  12:57 madhyāhna ends
Dvādaśī ends 12:33:49
11:2111:4512:0912:3312:5713:2113:45

25 of 48 minutes covered, the first 25

Dvādaśī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 12:41 on Thu 13 Feb to 12:34 on Fri 14 Feb.

    2003-02-13T04:41:28Z → 2003-02-14T04:33:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 13th, 12:09–12:57 on the 14th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 15 of 48 minutes on the 13th and 25 of 48 on the 14th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 910 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 2003: Thursday 13 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 2003 falls on Thursday 13 February. Dvādaśī runs from 12:41 on Thu 13 Feb to 12:34 on Fri 14 Feb and covers 15 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 25 minutes; by the rule the first midday is taken.

ahargana.org/baoding/festivals/2003/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 13 Feb
Ahargaṇa, classicalDisc centre, no refractionThu 13 Feb
compat-drikpanchangComparison profileThu 13 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 13thCoveredMadhyāhna 14thCoveredRuled
Los Angeles20:41 → 20:3411:4348 min11:430 min13 Feb
Chicago22:41 → 22:3411:4148 min11:410 min13 Feb
Jersey City23:41 → 23:3411:4748 min11:470 min13 Feb
Port of Spain00:41 → 00:3411:5648 min11:560 min13 Feb
London04:41 → 04:3411:5148 min11:510 min13 Feb
Durban06:41 → 06:3411:4648 min11:460 min13 Feb
Dubai08:41 → 08:3412:0948 min12:090 min13 Feb
Delhi10:11 → 10:0412:1148 min12:110 min13 Feb
Kolkata10:11 → 10:0411:2748 min11:270 min13 Feb
Singapore12:41 → 12:3412:5548 min12:550 min13 Feb
Sydney15:41 → 15:3412:450 min12:4548 min14 Feb
Suva16:41 → 16:3411:560 min11:5648 min14 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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