Ruling · Vāmana Jayantī · 2091

Monday 24 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 357 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 23 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:47  12:35 madhyāhna ends
10:5911:2311:4712:1112:3512:5913:23

0 of 48 minutes covered

Midday of Monday 24 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

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 18:32 on Sun 23 Sep to 19:17 on Mon 24 Sep.

    2091-09-23T10:31:58Z → 2091-09-24T11:16:37Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 23rd, 11:46–12:34 on the 24th.

    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 23rd and 48 of 48 on the 24th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 21445 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2091: Monday 24 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2091 falls on Monday 24 September. Dvādaśī runs from 18:32 on Sun 23 Sep to 19:17 on Mon 24 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2091/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 24 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 24 Sep
compat-drikpanchangComparison profileMon 24 Sep
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/vamana-jayanti · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Śukla · Dvādaśī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 103

“S 12 Visnuparivartanotsava, Sakrotthana (in any of the naksatras U. Asadha, Sravana & Dhanistha), Kalki dvadasi, Sravana dvadasi (when combined with naksatra Sravana), Vamana jayanti (madhyahna vyapini).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvādaśīMadhyāhna 23rdCoveredMadhyāhna 24thCoveredRuled
Los Angeles03:32 → 04:1712:2148 min12:210 min23 Sep
Chicago05:32 → 06:1712:1948 min12:180 min23 Sep
Jersey City06:32 → 07:1712:2548 min12:240 min23 Sep
Port of Spain06:32 → 07:1711:3548 min11:340 min23 Sep
London11:32 → 12:1712:2948 min12:280 min23 Sep
Durban12:32 → 13:1711:250 min11:2448 min24 Sep
Dubai14:32 → 15:1711:470 min11:4748 min24 Sep
Delhi16:02 → 16:4711:500 min11:4948 min24 Sep
Kolkata16:02 → 16:4711:050 min11:0548 min24 Sep
Singapore18:32 → 19:1712:330 min12:3348 min24 Sep
Sydney20:32 → 21:1711:240 min11:2448 min24 Sep
Suva22:32 → 23:1711:350 min11:3548 min24 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
vamana-jayanti@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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