Ruling · Rukmiṇī Dvādaśī · 1913

Saturday 17 May

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 563 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 Friday 16 May

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:13  12:01 madhyāhna ends
10:2510:4911:1311:3712:0112:2512:49

0 of 48 minutes covered

Midday of Saturday 17 May

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:13  12:01 madhyāhna ends
10:2510:4911:1311:3712:0112:2512:49

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 23:45 on Fri 16 May to 21:23 on Sat 17 May.

    1913-05-16T15:44:47Z → 1913-05-17T13:23:21Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 16th, 11:13–12:01 on the 17th.

    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 16th and 48 of 48 on the 17th.

    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 33766 s

  5. 05

    Ruling

    Rukmiṇī Dvādaśī, Daqing, 1913: Saturday 17 May.

    confidence: determinate

Say it like this

In Daqing, Rukmiṇī Dvādaśī 1913 falls on Saturday 17 May. Dvādaśī runs from 23:45 on Fri 16 May to 21:23 on Sat 17 May and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1913/rukmini-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 17 May
Ahargaṇa, classicalDisc centre, no refractionSat 17 May
compat-drikpanchangComparison profileSat 17 May
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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles07:45 → 05:2311:2548 min11:250 min16 May
Chicago09:45 → 07:2311:2348 min11:230 min16 May
Jersey City10:45 → 08:2311:2948 min11:290 min16 May
Port of Spain11:45 → 09:2311:3842 min11:380 min16 May
London15:45 → 13:2311:330 min11:3348 min17 May
Durban17:45 → 15:2311:280 min11:2848 min17 May
Dubai19:26 → 17:0411:320 min11:3248 min17 May
Delhi21:15 → 18:5311:530 min11:5348 min17 May
Kolkata21:15 → 18:5311:090 min11:0948 min17 May
Singapore22:45 → 20:2311:370 min11:3748 min17 May
Sydney01:45 → 23:2311:270 min11:2748 min17 May
Suva03:40 → 01:1811:330 min11:3348 min17 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

About Ahargaṇa