Tokyo to Upper Alton time converter

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

Tokyo JST

Monday, October 19, 2026

Upper Alton CDT

Sunday, October 18, 2026

Tokyo
Japan
Mon, Oct 19
JSTUTC+9
Upper Alton
Illinois, United States
Sun, Oct 18
CDTUTC-5-14h
Finding your time zone…
Shared working hours (9:00–18:00)

Tokyo to Upper Alton conversion table

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

TokyoUpper Alton
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 Upper Alton): 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 Upper Alton 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 Upper Alton are 10,270 km (6,381 miles) apart in a straight line.

More conversions

Upper Alton to TokyoTokyo to New YorkTokyo to LondonTokyo to Los AngelesTokyo to ChicagoTokyo to TorontoTokyo to São PauloTokyo to ParisTokyo to BerlinTokyo to MoscowTokyo to DubaiTokyo to New DelhiTokyo to Bangkok
New York to Upper AltonLondon to Upper AltonLos Angeles to Upper AltonChicago to Upper AltonToronto to Upper AltonSão Paulo to Upper AltonParis to Upper AltonBerlin to Upper AltonMoscow to Upper AltonDubai to Upper AltonNew Delhi to Upper AltonBangkok to Upper Alton

Questions and answers

What is the time difference between Tokyo and Upper Alton?

Upper Alton is 14 hours behind Tokyo.

What time is it in Upper Alton when it is 9 AM in Tokyo?

When it is 9:00 AM in Tokyo, it is 7:00 PM (Sun, Oct 18) in Upper Alton.

When is the best time to call Upper Alton 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 Upper Alton): working hours on one side, early or late on the other.

Does the time difference between Tokyo and Upper Alton change?

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