Ruling · Rukmiṇī Dvādaśī · 2025

Thursday 8 May

Determinatein Chicago, under the Rashtriya Panchang method. Clear of every threshold by 477 minutes.

Decide it for

ChicagoDelhiKolkataSingaporeSydneyJersey City

41°51′ N 87°39′ W · America/Chicago · GeoNames 4887398

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Thursday 8 May

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:23  13:11 madhyāhna ends
11:3511:5912:2312:4713:1113:3513:59

48 of 48 minutes covered

Midday of Friday 9 May

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:23  13:11 madhyāhna ends
11:3511:5912:2312:4713:1113:3513:59

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 02:00 on Thu 8 May to 04:27 on Fri 9 May.

    2025-05-08T06:59:48Z → 2025-05-09T09:26:39Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:23–13:11 on the 8th, 12:23–13:11 on the 9th.

    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 8th and 0 of 48 on the 9th.

    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 28601 s

  5. 05

    Ruling

    Rukmiṇī Dvādaśī, Chicago, 2025: Thursday 8 May.

    confidence: determinate

Say it like this

In Chicago, Rukmiṇī Dvādaśī 2025 falls on Thursday 8 May. Dvādaśī runs from 02:00 on Thu 8 May to 04:27 on Fri 9 May and covers all of madhyāhna that midday.

ahargana.org/chicago/festivals/2025/rukmini-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 8 May
Ahargaṇa, classicalDisc centre, no refractionThu 8 May
compat-drikpanchangComparison profileThu 8 May
No institution has a recorded ruling for Chicago.

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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles00:00 → 02:2712:2648 min12:260 min8 May
Chicago02:00 → 04:2712:2348 min12:230 min8 May
Jersey City03:00 → 05:2712:2948 min12:290 min8 May
Port of Spain03:00 → 05:2711:3948 min11:390 min8 May
London08:00 → 10:2712:3348 min12:330 min8 May
Durban09:00 → 11:2711:2848 min11:280 min8 May
Dubai11:00 → 13:2711:5148 min11:5148 min8 May
Delhi12:30 → 14:5711:5412 min11:5448 min8 May
Kolkata12:30 → 14:5711:090 min11:0948 min9 May
Singapore15:00 → 17:2712:370 min12:3748 min9 May
Sydney17:00 → 19:2711:270 min11:2748 min9 May
Suva19:00 → 21:2711:390 min11:3948 min9 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