Ruling · Bhīṣma Dvādaśī · 1962

Thursday 15 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 7 min 10 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 15 February

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

madhyāhna begins 12:09  12:57 madhyāhna ends
Dvādaśī begins 12:49:29
11:2111:4512:0912:3312:5713:2113:45

7 of 48 minutes covered, the last 7

Midday of Friday 16 February

Qualifies with 48 of 48 minutes. Not taken.

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

48 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 15 Feb to 14:26 on Fri 16 Feb.

    1962-02-15T04:49:30Z → 1962-02-16T06:25:44Z

  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 7 of 48 minutes on the 15th and 48 of 48 on the 16th.

    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 430 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1962: Thursday 15 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1962 falls on Thursday 15 February. Dvādaśī runs from 12:49 on Thu 15 Feb to 14:26 on Fri 16 Feb and covers 7 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.

ahargana.org/baoding/festivals/1962/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 15 Feb
Ahargaṇa, classicalDisc centre, no refractionThu 15 Feb
compat-drikpanchangComparison profileThu 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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles20:49 → 22:2611:4348 min11:430 min15 Feb
Chicago22:49 → 00:2611:4148 min11:410 min15 Feb
Jersey City23:49 → 01:2611:4748 min11:470 min15 Feb
Port of Spain00:49 → 02:2611:5648 min11:560 min15 Feb
London04:49 → 06:2611:5148 min11:510 min15 Feb
Durban06:49 → 08:2611:4648 min11:460 min15 Feb
Dubai08:49 → 10:2612:0948 min12:090 min15 Feb
Delhi10:19 → 11:5612:1148 min12:110 min15 Feb
Kolkata10:19 → 11:5611:2748 min11:2729 min15 Feb
Singapore12:19 → 13:5612:2548 min12:2548 min15 Feb
Sydney14:49 → 16:2611:450 min11:4548 min16 Feb
Suva16:49 → 18:2611:560 min11:5648 min16 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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