Ruling · Rukmiṇī Dvādaśī · 1937

Friday 21 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 218 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 21 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

Midday of Saturday 22 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

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 06:09 on Fri 21 May to 08:12 on Sat 22 May.

    1937-05-20T22:08:36Z → 1937-05-22T00:12:29Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 21st, 11:51–12:39 on the 22nd.

    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 21st and 0 of 48 on the 22nd.

    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 13103 s

  5. 05

    Ruling

    Rukmiṇī Dvādaśī, Baoding, 1937: Friday 21 May.

    confidence: determinate

Say it like this

In Baoding, Rukmiṇī Dvādaśī 1937 falls on Friday 21 May. Dvādaśī runs from 06:09 on Fri 21 May to 08:12 on Sat 22 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1937/rukmini-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 21 May
Ahargaṇa, classicalDisc centre, no refractionFri 21 May
compat-drikpanchangComparison profileFri 21 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 20thCoveredMadhyāhna 22ndCoveredRuled
Los Angeles14:09 → 16:1211:260 min11:260 min21 May
Chicago17:09 → 19:1212:230 min12:230 min21 May
Jersey City18:09 → 20:1212:290 min12:290 min21 May
Port of Spain18:09 → 20:1211:390 min11:390 min21 May
London23:09 → 01:1212:330 min12:330 min21 May
Durban00:09 → 02:1211:280 min11:280 min21 May
Dubai02:09 → 04:1211:510 min11:510 min21 May
Delhi03:39 → 05:4211:540 min11:540 min21 May
Kolkata03:39 → 05:4211:090 min11:090 min21 May
Singapore05:29 → 07:3211:570 min11:570 min21 May
Sydney08:09 → 10:1211:270 min11:280 min21 May
Suva10:09 → 12:1211:390 min11:3934 min21 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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