Ruling · Bhīṣma Dvādaśī · 1989

Friday 17 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 292 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 16 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

Midday of Friday 17 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 17:48 on Thu 16 Feb to 18:35 on Fri 17 Feb.

    1989-02-16T09:48:23Z → 1989-02-17T10:34:54Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 16th, 12:08–12:56 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 0 of 48 minutes on the 16th and 48 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 17510 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1989: Friday 17 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1989 falls on Friday 17 February. Dvādaśī runs from 17:48 on Thu 16 Feb to 18:35 on Fri 17 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1989/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 17 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 17 Feb
compat-drikpanchangComparison profileFri 17 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 Angeles01:48 → 02:3511:4348 min11:430 min16 Feb
Chicago03:48 → 04:3511:4148 min11:410 min16 Feb
Jersey City04:48 → 05:3511:4748 min11:470 min16 Feb
Port of Spain05:48 → 06:3511:5648 min11:560 min16 Feb
London09:48 → 10:3511:5148 min11:510 min16 Feb
Durban11:48 → 12:3511:4645 min11:4648 min16 Feb
Dubai13:48 → 14:3512:090 min12:0948 min17 Feb
Delhi15:18 → 16:0512:110 min12:1148 min17 Feb
Kolkata15:18 → 16:0511:270 min11:2748 min17 Feb
Singapore17:48 → 18:3512:550 min12:5548 min17 Feb
Sydney20:48 → 21:3512:450 min12:4548 min17 Feb
Suva21:48 → 22:3511:560 min11:5648 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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