Ruling · Bhīṣma Dvādaśī · 1905

Thursday 16 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 8 min 08 s.

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 16 February

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:09  12:57 madhyāhna ends
Dvādaśī begins 12:48:35
11:2111:4512:0912:3312:5713:2113:45

8 of 48 minutes covered, the last 8

Midday of Friday 17 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 12:49 on Thu 16 Feb to 11:10 on Fri 17 Feb.

    1905-02-16T04:48:35Z → 1905-02-17T03:10:18Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 16th, 12:09–12:57 on the 17th.

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

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 8 of 48 minutes on the 16th and 0 of 48 on the 17th.

    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 488 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1905: Thursday 16 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1905 falls on Thursday 16 February. Dvādaśī runs from 12:49 on Thu 16 Feb to 11:10 on Fri 17 Feb and covers 8 of 48 minutes of madhyāhna that midday.

ahargana.org/baoding/festivals/1905/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 16 Feb
Ahargaṇa, classicalDisc centre, no refractionThu 16 Feb
compat-drikpanchangComparison profileThu 16 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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles20:49 → 19:1011:4348 min11:430 min16 Feb
Chicago22:49 → 21:1011:4148 min11:410 min16 Feb
Jersey City23:49 → 22:1011:4748 min11:470 min16 Feb
Port of Spain00:49 → 23:1011:5648 min11:560 min16 Feb
London04:49 → 03:1011:5148 min11:510 min16 Feb
Durban06:49 → 05:1011:4648 min11:460 min16 Feb
Dubai08:30 → 06:5111:5048 min11:500 min16 Feb
Delhi10:10 → 08:3112:0348 min12:020 min16 Feb
Kolkata10:10 → 08:3111:1848 min11:180 min16 Feb
Singapore11:44 → 10:0511:5048 min11:500 min16 Feb
Sydney14:49 → 13:1011:450 min11:4548 min17 Feb
Suva16:44 → 15:0511:510 min11:5148 min17 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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