Ruling · Bhīṣma Dvādaśī · 1959

Friday 20 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 474 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 19 February

Dvādaśī is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Friday 20 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

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 20:51 on Thu 19 Feb to 20:51 on Fri 20 Feb.

    1959-02-19T12:51:04Z → 1959-02-20T12:50:35Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 19th, 12:08–12:56 on the 20th.

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

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 19th and 48 of 48 on the 20th.

    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 28455 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1959: Friday 20 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1959 falls on Friday 20 February. Dvādaśī runs from 20:51 on Thu 19 Feb to 20:51 on Fri 20 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1959/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 20 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 20 Feb
compat-drikpanchangComparison profileFri 20 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles04:51 → 04:5111:4348 min11:430 min19 Feb
Chicago06:51 → 06:5111:4148 min11:410 min19 Feb
Jersey City07:51 → 07:5111:4748 min11:460 min19 Feb
Port of Spain08:51 → 08:5111:5648 min11:560 min19 Feb
London12:51 → 12:5111:510 min11:5148 min20 Feb
Durban14:51 → 14:5111:460 min11:4648 min20 Feb
Dubai16:51 → 16:5112:090 min12:0948 min20 Feb
Delhi18:21 → 18:2112:110 min12:1148 min20 Feb
Kolkata18:21 → 18:2111:270 min11:2748 min20 Feb
Singapore20:21 → 20:2112:250 min12:2548 min20 Feb
Sydney22:51 → 22:5111:450 min11:4548 min20 Feb
Suva00:51 → 00:5111:560 min11:5648 min20 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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