Ruling · Vāmana Jayantī · 2025

Thursday 4 September

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 459 minutes.

Decide it for

UjjainDelhiKolkataSingaporeSydneyJersey City

23°11′ N 75°47′ E · Asia/Kolkata · GeoNames 1253914

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Thursday 4 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:02  12:50 madhyāhna ends
11:1411:3812:0212:2612:5013:1413:38

48 of 48 minutes covered

Midday of Friday 5 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:01  12:49 madhyāhna ends
11:1311:3712:0112:2512:4913:1313:37

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 04:22 on Thu 4 Sep to 04:09 on Fri 5 Sep.

    2025-09-03T22:52:27Z → 2025-09-04T22:38:38Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:02–12:50 on the 4th, 12:01–12:49 on the 5th.

    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 4th and 0 of 48 on the 5th.

    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 27558 s

  5. 05

    Ruling

    Vāmana Jayantī, Ujjain, 2025: Thursday 4 September.

    confidence: determinate

Say it like this

In Ujjain, Vāmana Jayantī 2025 falls on Thursday 4 September. Dvādaśī runs from 04:22 on Thu 4 Sep to 04:09 on Fri 5 Sep and covers all of madhyāhna that midday.

ahargana.org/ujjain/festivals/2025/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 4 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 4 Sep
compat-drikpanchangComparison profileThu 4 Sep
No institution has a recorded ruling for Ujjain.

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 3rdCoveredMadhyāhna 4thCoveredRuled
Los Angeles15:52 → 15:3912:280 min12:2848 min4 Sep
Chicago17:52 → 17:3912:250 min12:2548 min4 Sep
Jersey City18:52 → 18:3912:310 min12:3148 min4 Sep
Port of Spain18:52 → 18:3911:410 min11:4148 min4 Sep
London23:52 → 23:3912:350 min12:3548 min4 Sep
Durban00:52 → 00:3911:310 min11:3148 min4 Sep
Dubai02:52 → 02:3911:540 min11:5448 min4 Sep
Delhi04:22 → 04:0911:560 min11:5648 min4 Sep
Kolkata04:22 → 04:0911:120 min11:1148 min4 Sep
Singapore06:52 → 06:3912:400 min12:4048 min4 Sep
Sydney08:52 → 08:3911:310 min11:3148 min4 Sep
Suva10:52 → 10:3911:420 min11:4248 min4 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