Tokyo to O'Fallon time converter

O'Fallon is 14 hours behind Tokyo. When it is 9:00 AM in Tokyo, it is 7:00 PM (Sun, Oct 18) in O'Fallon.

Tokyo JST

Monday, October 19, 2026

O'Fallon CDT

Monday, October 19, 2026

Japan
Mon, Oct 19
JSTUTC+9
Missouri, United States
Mon, Oct 19
CDTUTC-5-14h
Finding your time zone…

3:22 PM in Tokyo, Monday, October 19, 2026

Shared working hours (9:00–18:00)

Tokyo to O'Fallon conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 7:00 AM – 8:00 AM in Tokyo (5:00 PM – 6:00 PM in O'Fallon): working hours on one side, early or late on the other.

Daylight saving time and the difference

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

  • Oct 19, 2026 – Nov 1, 2026: -14h
  • Nov 1, 2026 – Mar 14, 2027: -15h
  • Mar 14, 2027 – Oct 19, 2027: -14h

Distance

Tokyo and O'Fallon are 10,249 km (6,368 miles) apart in a straight line.

More conversions

Questions and answers

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

O'Fallon is 14 hours behind Tokyo.

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

When it is 9:00 AM in Tokyo, it is 7:00 PM (Sun, Oct 18) in O'Fallon.

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

Working hours don't overlap fully. The closest fit is 7:00 AM – 8:00 AM in Tokyo (5:00 PM – 6:00 PM in O'Fallon): working hours on one side, early or late on the other.

Does the time difference between Tokyo 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.