Ruling · Bhīṣma Dvādaśī · 1908

Thursday 13 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 174 minutes.

Decide it for

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. 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 Friday 14 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 06:35 on Thu 13 Feb to 09:15 on Fri 14 Feb.

    1908-02-12T22:34:35Z → 1908-02-14T01:14:50Z

  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 48 of 48 minutes on the 13th and 0 of 48 on the 14th.

    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 10438 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1908: Thursday 13 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1908 falls on Thursday 13 February. Dvādaśī runs from 06:35 on Thu 13 Feb to 09:15 on Fri 14 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1908/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 12thCoveredMadhyāhna 14thCoveredRuled
Los Angeles14:35 → 17:1511:440 min11:440 min13 Feb
Chicago16:35 → 19:1511:410 min11:410 min13 Feb
Jersey City17:35 → 20:1511:470 min11:470 min13 Feb
Port of Spain18:35 → 21:1511:570 min11:570 min13 Feb
London22:35 → 01:1511:510 min11:510 min13 Feb
Durban00:35 → 03:1511:460 min11:460 min13 Feb
Dubai02:16 → 04:5611:500 min11:500 min13 Feb
Delhi04:05 → 06:4512:120 min12:120 min13 Feb
Kolkata04:05 → 06:4511:270 min11:270 min13 Feb
Singapore05:35 → 08:1511:550 min11:550 min13 Feb
Sydney08:35 → 11:1511:450 min11:450 min13 Feb
Suva10:30 → 13:1011:520 min11:5248 min13 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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