Ruling · Rukmiṇī Dvādaśī · 1909

Saturday 1 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 20 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 Saturday 1 May

Taken. Both middays qualify; the rule takes the first.

madhyāhna begins 11:52  12:40 madhyāhna ends
Dvādaśī begins 12:19:48
11:0411:2811:5212:1612:4013:0413:28

20 of 48 minutes covered, the last 20

Midday of Sunday 2 May

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

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 12:20 on Sat 1 May to 14:41 on Sun 2 May.

    1909-05-01T04:19:48Z → 1909-05-02T06:41:11Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 1st, 11:51–12:39 on the 2nd.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 20 of 48 minutes on the 1st and 48 of 48 on the 2nd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 1186 s

  5. 05

    Ruling

    Rukmiṇī Dvādaśī, Baoding, 1909: Saturday 1 May.

    confidence: determinate

Say it like this

In Baoding, Rukmiṇī Dvādaśī 1909 falls on Saturday 1 May. Dvādaśī runs from 12:20 on Sat 1 May to 14:41 on Sun 2 May and covers 20 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.

ahargana.org/baoding/festivals/1909/rukmini-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 1 May
Ahargaṇa, classicalDisc centre, no refractionSat 1 May
compat-drikpanchangComparison profileSat 1 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 1stCoveredMadhyāhna 2ndCoveredRuled
Los Angeles20:20 → 22:4111:2648 min11:260 min1 May
Chicago22:20 → 00:4111:2448 min11:240 min1 May
Jersey City23:20 → 01:4111:3048 min11:300 min1 May
Port of Spain00:20 → 02:4111:3948 min11:390 min1 May
London04:20 → 06:4111:3448 min11:340 min1 May
Durban06:20 → 08:4111:2948 min11:290 min1 May
Dubai08:01 → 10:2211:3348 min11:330 min1 May
Delhi09:50 → 12:1111:5448 min11:5417 min1 May
Kolkata09:50 → 12:1111:1048 min11:1048 min1 May
Singapore11:20 → 13:4111:3848 min11:3848 min1 May
Sydney14:20 → 16:4111:280 min11:2848 min2 May
Suva16:15 → 18:3611:340 min11:3448 min2 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