Ruling · Bhīṣma Dvādaśī · 2009

Friday 6 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 55 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 6 February

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:08  12:56 madhyāhna ends
11:2011:4412:0812:3212:5613:2013:44

48 of 48 minutes covered

Midday of Saturday 7 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 11:13 on Fri 6 Feb to 08:11 on Sat 7 Feb.

    2009-02-06T03:13:15Z → 2009-02-07T00:11:01Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 6th, 12:09–12:57 on the 7th.

    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 6th and 0 of 48 on the 7th.

    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 3312 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 2009: Friday 6 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 2009 falls on Friday 6 February. Dvādaśī runs from 11:13 on Fri 6 Feb to 08:11 on Sat 7 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2009/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 6 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 6 Feb
compat-drikpanchangComparison profileFri 6 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 6thCoveredMadhyāhna 7thCoveredRuled
Los Angeles19:13 → 16:1111:4348 min11:430 min6 Feb
Chicago21:13 → 18:1111:4148 min11:410 min6 Feb
Jersey City22:13 → 19:1111:4748 min11:470 min6 Feb
Port of Spain23:13 → 20:1111:5648 min11:560 min6 Feb
London03:13 → 00:1111:5148 min11:510 min6 Feb
Durban05:13 → 02:1111:4648 min11:460 min6 Feb
Dubai07:13 → 04:1112:0948 min12:090 min6 Feb
Delhi08:43 → 05:4112:1148 min12:110 min6 Feb
Kolkata08:43 → 05:4111:2748 min11:270 min6 Feb
Singapore11:13 → 08:1112:5548 min12:550 min6 Feb
Sydney14:13 → 11:1112:450 min12:450 min7 Feb
Suva15:13 → 12:1111:560 min11:5615 min7 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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