Ruling · Rukmiṇī Dvādaśī · 2099

Saturday 2 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 39 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 1 May

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:52  12:40 madhyāhna ends
Dvādaśī begins 13:18:33
11:0411:2811:5212:1612:4013:0413:28

0 of 48 minutes covered

Midday of Saturday 2 May

Taken. Dvādaśī reaches neither midday; the rule takes the second day.

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

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 13:19 on Fri 1 May to 10:27 on Sat 2 May.

    2099-05-01T05:18:33Z → 2099-05-02T02:26:35Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 1st, 11:52–12:40 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 0 of 48 minutes on the 1st and 0 of 48 on the 2nd.

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

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: purvaviddha → second-day · margin 2312 s

  5. 05

    Ruling

    Rukmiṇī Dvādaśī, Baoding, 2099: Saturday 2 May.

    confidence: determinate

Say it like this

In Baoding, Rukmiṇī Dvādaśī 2099 falls on Saturday 2 May. Dvādaśī runs from 13:19 on Fri 1 May to 10:27 on Sat 2 May, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/2099/rukmini-dvadashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 2 May
Ahargaṇa, classicalDisc centre, no refractionSat 2 May
compat-drikpanchangComparison profileFri 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 Angeles22:19 → 19:2712:2748 min12:270 min1 May
Chicago00:19 → 21:2712:2448 min12:240 min1 May
Jersey City01:19 → 22:2712:3048 min12:300 min1 May
Port of Spain01:19 → 22:2711:4048 min11:400 min1 May
London06:19 → 03:2712:3548 min12:340 min1 May
Durban07:19 → 04:2711:2948 min11:290 min1 May
Dubai09:19 → 06:2711:5248 min11:520 min1 May
Delhi10:49 → 07:5711:5548 min11:550 min1 May
Kolkata10:49 → 07:5711:1048 min11:100 min1 May
Singapore13:19 → 10:2712:388 min12:380 min1 May
Sydney15:19 → 12:2711:290 min11:2848 min2 May
Suva17:19 → 14:2711:400 min11:4048 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

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