Geneva to O'Fallon time converter

O'Fallon is 7 hours behind Geneva. When it is 9:00 AM in Geneva, it is 2:00 AM in O'Fallon.

Geneva CEST

Monday, October 19, 2026

O'Fallon CDT

Monday, October 19, 2026

Switzerland
Mon, Oct 19
CESTUTC+2
Missouri, United States
Mon, Oct 19
CDTUTC-5-7h
Finding your time zone…

5:25 PM in Geneva, Monday, October 19, 2026

Shared working hours (9:00–18:00)

Geneva to O'Fallon conversion table

Every hour of today in Geneva and the matching time in O'Fallon. Light rows are typical working hours (9:00–18:00).

GenevaO'Fallon
12:00 AM5:00 PM−1 day
1:00 AM6:00 PM−1 day
2:00 AM7:00 PM−1 day
3:00 AM8:00 PM−1 day
4:00 AM9:00 PM−1 day
5:00 AM10:00 PM−1 day
6:00 AM11:00 PM−1 day
7:00 AM12:00 AM
8:00 AM1:00 AM
9:00 AM2:00 AM
10:00 AM3:00 AM
11:00 AM4:00 AM
12:00 PM5:00 AM
1:00 PM6:00 AM
2:00 PM7:00 AM
3:00 PM8:00 AM
4:00 PM9:00 AM
5:00 PM10:00 AM
6:00 PM11:00 AM
7:00 PM12:00 PM
8:00 PM1:00 PM
9:00 PM2:00 PM
10:00 PM3:00 PM
11:00 PM4:00 PM

Best time to call or meet

Both sides are at work from 4:00 PM – 6:00 PM in Geneva (9:00 AM – 11:00 AM in O'Fallon).

Daylight saving time and the difference

The difference changes during the year because Geneva and O'Fallon switch clocks on different dates:

  • Oct 19, 2026 – Oct 25, 2026: -7h
  • Oct 25, 2026 – Nov 1, 2026: -6h
  • Nov 1, 2026 – Mar 14, 2027: -7h
  • Mar 14, 2027 – Mar 28, 2027: -6h
  • Mar 28, 2027 – Oct 19, 2027: -7h

Distance

Geneva and O'Fallon are 7,468 km (4,640 miles) apart in a straight line.

More conversions

Questions and answers

What is the time difference between Geneva and O'Fallon?

O'Fallon is 7 hours behind Geneva.

What time is it in O'Fallon when it is 9 AM in Geneva?

When it is 9:00 AM in Geneva, it is 2:00 AM in O'Fallon.

When is the best time to call O'Fallon from Geneva?

Both sides are at work from 4:00 PM – 6:00 PM in Geneva (9:00 AM – 11:00 AM in O'Fallon).

Does the time difference between Geneva and O'Fallon change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.