Ruling · Rukmiṇī Dvādaśī · 2021

Sunday 23 May

Determinatein Phoenix, under the Rashtriya Panchang method. Clear of every threshold by 140 minutes.

Decide it for

PhoenixDelhiKolkataSingaporeSydneyJersey City

33°27′ N 112°04′ W · America/Phoenix · GeoNames 5308655

The two middays

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

Midday of Saturday 22 May

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:01  12:49 madhyāhna ends
11:1311:3712:0112:2512:4913:1313:37

0 of 48 minutes covered

Midday of Sunday 23 May

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:01  12:49 madhyāhna ends
11:1311:3712:0112:2512:4913:1313:37

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 18:13 on Sat 22 May to 15:09 on Sun 23 May.

    2021-05-23T01:13:16Z → 2021-05-23T22:09:02Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:01–12:49 on the 22nd, 12:01–12:49 on the 23rd.

    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 22nd and 48 of 48 on the 23rd.

    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 8385 s

  5. 05

    Ruling

    Rukmiṇī Dvādaśī, Phoenix, 2021: Sunday 23 May.

    confidence: determinate

Say it like this

In Phoenix, Rukmiṇī Dvādaśī 2021 falls on Sunday 23 May. Dvādaśī runs from 18:13 on Sat 22 May to 15:09 on Sun 23 May and covers all of madhyāhna that midday.

ahargana.org/phoenix/festivals/2021/rukmini-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 23 May
Ahargaṇa, classicalDisc centre, no refractionSun 23 May
compat-drikpanchangComparison profileSun 23 May
No institution has a recorded ruling for Phoenix.

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 23rdCoveredMadhyāhna 24thCoveredRuled
Los Angeles18:13 → 15:0912:2648 min12:260 min23 May
Chicago20:13 → 17:0912:2448 min12:240 min23 May
Jersey City21:13 → 18:0912:2948 min12:290 min23 May
Port of Spain21:13 → 18:0911:3948 min11:390 min23 May
London02:13 → 23:0912:3448 min12:340 min23 May
Durban03:13 → 00:0911:2948 min11:290 min23 May
Dubai05:13 → 02:0911:5248 min11:520 min23 May
Delhi06:43 → 03:3911:5448 min11:540 min23 May
Kolkata06:43 → 03:3911:0948 min11:090 min23 May
Singapore09:13 → 06:0912:3748 min12:370 min23 May
Sydney11:13 → 08:0911:2848 min11:280 min23 May
Suva13:13 → 10:0911:390 min11:390 min24 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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