Ruling · Bhīṣma Dvādaśī · 2079

Monday 13 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 26 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 Sunday 12 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 Monday 13 February

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:09  12:57 madhyāhna ends
Dvādaśī ends 13:22:22
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 15:38 on Sun 12 Feb to 13:22 on Mon 13 Feb.

    2079-02-12T07:38:25Z → 2079-02-13T05:22:22Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 12th, 12:09–12:57 on the 13th.

    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 12th and 48 of 48 on the 13th.

    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 1541 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 2079: Monday 13 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 2079 falls on Monday 13 February. Dvādaśī runs from 15:38 on Sun 12 Feb to 13:22 on Mon 13 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2079/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 13 Feb
Ahargaṇa, classicalDisc centre, no refractionMon 13 Feb
compat-drikpanchangComparison profileMon 13 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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles23:38 → 21:2211:4348 min11:430 min12 Feb
Chicago01:38 → 23:2211:4148 min11:410 min12 Feb
Jersey City02:38 → 00:2211:4748 min11:470 min12 Feb
Port of Spain03:38 → 01:2211:5648 min11:560 min12 Feb
London07:38 → 05:2211:5148 min11:510 min12 Feb
Durban09:38 → 07:2211:4648 min11:460 min12 Feb
Dubai11:38 → 09:2212:0948 min12:090 min12 Feb
Delhi13:08 → 10:5212:120 min12:120 min13 Feb
Kolkata13:08 → 10:5211:270 min11:270 min13 Feb
Singapore15:38 → 13:2212:550 min12:5527 min13 Feb
Sydney18:38 → 16:2212:450 min12:4548 min13 Feb
Suva19:38 → 17:2211:560 min11:5648 min13 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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