Ruling · Rukmiṇī Dvādaśī · 1920

Thursday 29 April

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 286 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

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

Midday of Thursday 29 April

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:14  12:02 madhyāhna ends
10:2610:5011:1411:3812:0212:2612:50

48 of 48 minutes covered

Midday of Friday 30 April

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:14  12:02 madhyāhna ends
10:2610:5011:1411:3812:0212:2612:50

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 06:16 on Thu 29 Apr to 06:27 on Fri 30 Apr.

    1920-04-28T22:16:16Z → 1920-04-29T22:27:21Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:14–12:02 on the 29th, 11:14–12:02 on the 30th.

    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 29th and 0 of 48 on the 30th.

    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 17178 s

  5. 05

    Ruling

    Rukmiṇī Dvādaśī, Daqing, 1920: Thursday 29 April.

    confidence: determinate

Say it like this

In Daqing, Rukmiṇī Dvādaśī 1920 falls on Thursday 29 April. Dvādaśī runs from 06:16 on Thu 29 Apr to 06:27 on Fri 30 Apr and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1920/rukmini-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 29 Apr
Ahargaṇa, classicalDisc centre, no refractionThu 29 Apr
compat-drikpanchangComparison profileThu 29 Apr
No institution has a recorded ruling for Daqing.

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 28thCoveredMadhyāhna 29thCoveredRuled
Los Angeles14:16 → 14:2711:270 min11:2648 min29 Apr
Chicago16:16 → 16:2711:240 min11:2448 min29 Apr
Jersey City18:16 → 18:2712:300 min12:3048 min29 Apr
Port of Spain18:16 → 18:2711:400 min11:3948 min29 Apr
London23:16 → 23:2712:350 min12:3448 min29 Apr
Durban00:16 → 00:2711:290 min11:2948 min29 Apr
Dubai02:16 → 02:2711:520 min11:5248 min29 Apr
Delhi03:46 → 03:5711:550 min11:5548 min29 Apr
Kolkata03:46 → 03:5711:100 min11:1048 min29 Apr
Singapore05:16 → 05:2711:380 min11:3848 min29 Apr
Sydney08:16 → 08:2711:280 min11:2848 min29 Apr
Suva10:16 → 10:2711:400 min11:4048 min29 Apr
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

About Ahargaṇa