Ruling · Rukmiṇī Dvādaśī · 1927

Friday 13 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 379 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 12 May

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

0 of 48 minutes covered

Midday of Friday 13 May

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

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 18:58 on Thu 12 May to 21:20 on Fri 13 May.

    1927-05-12T10:57:38Z → 1927-05-13T13:20:21Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 12th, 11:51–12:39 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. 102

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: purvaviddha → only-day · margin 22735 s

  5. 05

    Ruling

    Rukmiṇī Dvādaśī, Baoding, 1927: Friday 13 May.

    confidence: determinate

Say it like this

In Baoding, Rukmiṇī Dvādaśī 1927 falls on Friday 13 May. Dvādaśī runs from 18:58 on Thu 12 May to 21:20 on Fri 13 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1927/rukmini-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 13 May
Ahargaṇa, classicalDisc centre, no refractionFri 13 May
compat-drikpanchangComparison profileFri 13 May
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/rukmini-dvadashi · ruleset 2026.3-draft

Month
Vaiśākha, amānta
Pakṣa · aṅga
Śukla · Dvādaśī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 102

“S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvādaśīMadhyāhna 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles02:58 → 05:2011:2548 min11:250 min12 May
Chicago05:58 → 08:2012:2348 min12:230 min12 May
Jersey City06:58 → 09:2012:2948 min12:290 min12 May
Port of Spain06:58 → 09:2011:3848 min11:380 min12 May
London11:58 → 14:2012:3348 min12:3348 min12 May
Durban12:58 → 15:2011:280 min11:2848 min13 May
Dubai14:58 → 17:2011:510 min11:5148 min13 May
Delhi16:28 → 18:5011:540 min11:5348 min13 May
Kolkata16:28 → 18:5011:090 min11:0948 min13 May
Singapore17:58 → 20:2011:370 min11:3748 min13 May
Sydney20:58 → 23:2011:270 min11:2748 min13 May
Suva22:58 → 01:2011:380 min11:3848 min13 May
Profile · tradition
pac-rp@2026.1 · smarta
Rule
rukmini-dvadashi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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