Upper Alton to Tokyo time converter

Tokyo is 14 hours ahead of Upper Alton. When it is 9:00 AM in Upper Alton, it is 11:00 PM in Tokyo.

Upper Alton CDT

Sunday, October 18, 2026

Tokyo JST

Monday, October 19, 2026

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

Upper Alton to Tokyo conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

The difference changes during the year because Upper Alton and Tokyo switch clocks on different dates:

  • Oct 18, 2026 – Nov 1, 2026: +14h
  • Nov 1, 2026 – Mar 14, 2027: +15h
  • Mar 14, 2027 – Oct 18, 2027: +14h

Distance

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

More conversions

Tokyo to Upper AltonUpper Alton to New YorkUpper Alton to LondonUpper Alton to Los AngelesUpper Alton to ChicagoUpper Alton to TorontoUpper Alton to São PauloUpper Alton to ParisUpper Alton to BerlinUpper Alton to MoscowUpper Alton to DubaiUpper Alton to New DelhiUpper Alton to Bangkok
New York to TokyoLondon to TokyoLos Angeles to TokyoChicago to TokyoToronto to TokyoSão Paulo to TokyoParis to TokyoBerlin to TokyoMoscow to TokyoDubai to TokyoNew Delhi to TokyoBangkok to Tokyo

Questions and answers

What is the time difference between Upper Alton and Tokyo?

Tokyo is 14 hours ahead of Upper Alton.

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

When it is 9:00 AM in Upper Alton, it is 11:00 PM in Tokyo.

When is the best time to call Tokyo from Upper Alton?

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

Does the time difference between Upper Alton and Tokyo change?

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