Ruling · Vāmana Jayantī · 2027

Sunday 12 September

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 409 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 Saturday 11 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

0 of 48 minutes covered

Midday of Sunday 12 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

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 19:37 on Sat 11 Sep to 22:13 on Sun 12 Sep.

    2027-09-11T14:06:36Z → 2027-09-12T16:43:22Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 11th, 11:59–12:47 on the 12th.

    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 11th and 48 of 48 on the 12th.

    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 24545 s

  5. 05

    Ruling

    Vāmana Jayantī, Ujjain, 2027: Sunday 12 September.

    confidence: determinate

Say it like this

In Ujjain, Vāmana Jayantī 2027 falls on Sunday 12 September. Dvādaśī runs from 19:37 on Sat 11 Sep to 22:13 on Sun 12 Sep and covers all of madhyāhna that midday.

ahargana.org/ujjain/festivals/2027/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 12 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 12 Sep
compat-drikpanchangComparison profileSun 12 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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles07:07 → 09:4312:2548 min12:250 min11 Sep
Chicago09:07 → 11:4312:2348 min12:230 min11 Sep
Jersey City10:07 → 12:4312:2948 min12:2815 min11 Sep
Port of Spain10:07 → 12:4311:3948 min11:3848 min11 Sep
London15:07 → 17:4312:330 min12:3248 min12 Sep
Durban16:07 → 18:4311:290 min11:2848 min12 Sep
Dubai18:07 → 20:4311:510 min11:5148 min12 Sep
Delhi19:37 → 22:1311:540 min11:5348 min12 Sep
Kolkata19:37 → 22:1311:090 min11:0948 min12 Sep
Singapore22:07 → 00:4312:370 min12:3748 min12 Sep
Sydney00:07 → 02:4311:280 min11:2848 min12 Sep
Suva02:07 → 04:4311:390 min11:3948 min12 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