Ruling · Rukmiṇī Dvādaśī · 1987

Sunday 10 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 554 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 Sunday 10 May

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:51  13:39 madhyāhna ends
12:0312:2712:5113:1513:3914:0314:27

48 of 48 minutes covered

Midday of Monday 11 May

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:51  13:39 madhyāhna ends
12:0312:2712:5113:1513:3914:0314:27

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 03:36 on Sun 10 May to 03:12 on Mon 11 May.

    1987-05-09T18:36:29Z → 1987-05-10T18:11:45Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:51–13:39 on the 10th, 12:51–13:39 on the 11th.

    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 10th and 0 of 48 on the 11th.

    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 33263 s

  5. 05

    Ruling

    Rukmiṇī Dvādaśī, Baoding, 1987: Sunday 10 May.

    confidence: determinate

Say it like this

In Baoding, Rukmiṇī Dvādaśī 1987 falls on Sunday 10 May. Dvādaśī runs from 03:36 on Sun 10 May to 03:12 on Mon 11 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1987/rukmini-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 10 May
Ahargaṇa, classicalDisc centre, no refractionSun 10 May
compat-drikpanchangComparison profileSun 10 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles11:36 → 11:1212:2648 min12:260 min9 May
Chicago13:36 → 13:1212:230 min12:2348 min10 May
Jersey City14:36 → 14:1212:290 min12:2948 min10 May
Port of Spain14:36 → 14:1211:390 min11:3948 min10 May
London19:36 → 19:1212:330 min12:3348 min10 May
Durban20:36 → 20:1211:280 min11:2848 min10 May
Dubai22:36 → 22:1211:510 min11:5148 min10 May
Delhi00:06 → 23:4211:540 min11:5448 min10 May
Kolkata00:06 → 23:4211:090 min11:0948 min10 May
Singapore02:36 → 02:1212:370 min12:3748 min10 May
Sydney04:36 → 04:1211:270 min11:2748 min10 May
Suva06:36 → 06:1211:390 min11:3948 min10 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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