Ruling · Bhīṣma Dvādaśī · 1938

Friday 11 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 14 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 Friday 11 February

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:09  12:57 madhyāhna ends
Dvādaśī begins 12:42:49
11:2111:4512:0912:3312:5713:2113:45

14 of 48 minutes covered, the last 14

Midday of Saturday 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

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 12:43 on Fri 11 Feb to 09:51 on Sat 12 Feb.

    1938-02-11T04:42:49Z → 1938-02-12T01:50:56Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 11th, 12:09–12:57 on the 12th.

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

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 14 of 48 minutes on the 11th and 0 of 48 on the 12th.

    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 837 s

  5. 05

    Ruling

    Bhīṣma Dvādaśī, Baoding, 1938: Friday 11 February.

    confidence: determinate

Say it like this

In Baoding, Bhīṣma Dvādaśī 1938 falls on Friday 11 February. Dvādaśī runs from 12:43 on Fri 11 Feb to 09:51 on Sat 12 Feb and covers 14 of 48 minutes of madhyāhna that midday.

ahargana.org/baoding/festivals/1938/bhishma-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 11 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 11 Feb
compat-drikpanchangComparison profileFri 11 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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles20:43 → 17:5111:4448 min11:440 min11 Feb
Chicago22:43 → 19:5111:4148 min11:410 min11 Feb
Jersey City23:43 → 20:5111:4748 min11:470 min11 Feb
Port of Spain00:43 → 21:5111:5748 min11:570 min11 Feb
London04:43 → 01:5111:5148 min11:510 min11 Feb
Durban06:43 → 03:5111:4648 min11:460 min11 Feb
Dubai08:43 → 05:5112:0948 min12:090 min11 Feb
Delhi10:13 → 07:2112:1248 min12:120 min11 Feb
Kolkata10:13 → 07:2111:2748 min11:270 min11 Feb
Singapore12:03 → 09:1112:1548 min12:150 min11 Feb
Sydney14:43 → 11:5111:450 min11:456 min12 Feb
Suva16:43 → 13:5111:570 min11:5748 min12 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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