Ruling · Bhīṣma Dvādaśī · 1913

Tuesday 18 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 484 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 Monday 17 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 Tuesday 18 February

Taken. The only midday Dvādaśī reaches.

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 23:56 on Mon 17 Feb to 21:00 on Tue 18 Feb.

    1913-02-17T15:55:44Z → 1913-02-18T13:00:08Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 17th, 12:09–12:57 on the 18th.

    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 17th and 48 of 48 on the 18th.

    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 29013 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1913: Tuesday 18 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1913 falls on Tuesday 18 February. Dvādaśī runs from 23:56 on Mon 17 Feb to 21:00 on Tue 18 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1913/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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles07:56 → 05:0011:4348 min11:430 min17 Feb
Chicago09:56 → 07:0011:4148 min11:410 min17 Feb
Jersey City10:56 → 08:0011:4748 min11:470 min17 Feb
Port of Spain11:56 → 09:0011:5648 min11:560 min17 Feb
London15:56 → 13:0011:510 min11:5148 min18 Feb
Durban17:56 → 15:0011:460 min11:4648 min18 Feb
Dubai19:37 → 16:4111:500 min11:5048 min18 Feb
Delhi21:26 → 18:3012:120 min12:1148 min18 Feb
Kolkata21:26 → 18:3011:270 min11:2748 min18 Feb
Singapore22:56 → 20:0011:550 min11:5548 min18 Feb
Sydney01:56 → 23:0011:450 min11:4548 min18 Feb
Suva03:51 → 00:5511:510 min11:5148 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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