Ruling · Bhīṣma Dvādaśī · 1997

Tuesday 18 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 79 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 Tuesday 18 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

Midday of Wednesday 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

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 08:41 on Tue 18 Feb to 10:49 on Wed 19 Feb.

    1997-02-18T00:41:00Z → 1997-02-19T02:49:23Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 18th, 12:08–12:56 on the 19th.

    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 18th and 0 of 48 on the 19th.

    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 4736 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1997: Tuesday 18 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1997 falls on Tuesday 18 February. Dvādaśī runs from 08:41 on Tue 18 Feb to 10:49 on Wed 19 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1997/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 18 Feb
Ahargaṇa, classicalDisc centre, no refractionTue 18 Feb
compat-drikpanchangComparison profileTue 18 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 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles16:41 → 18:4911:4348 min11:430 min18 Feb
Chicago18:41 → 20:4911:4148 min11:410 min18 Feb
Jersey City19:41 → 21:4911:4748 min11:460 min18 Feb
Port of Spain20:41 → 22:4911:5648 min11:560 min18 Feb
London00:41 → 02:4911:5148 min11:510 min18 Feb
Durban02:41 → 04:4911:4648 min11:460 min18 Feb
Dubai04:41 → 06:4912:0948 min12:090 min18 Feb
Delhi06:11 → 08:1912:1148 min12:110 min18 Feb
Kolkata06:11 → 08:1911:2748 min11:270 min18 Feb
Singapore08:41 → 10:4912:5548 min12:540 min18 Feb
Sydney11:41 → 13:4912:4548 min12:4548 min18 Feb
Suva12:41 → 14:4911:563 min11:5648 min18 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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