Working-hour overlap
When both cities are at work
There is no full hour when both cities are inside a standard 09:00–17:00 working day. Use an early start in one city or an evening call in the other.
Time converter
Chicago to Tokyo
United States
Chicago
6:5832
Wednesday, 29 July 2026GMT-5 · UTC−5
Japan
Tokyo
20:5832
Wednesday, 29 July 2026GMT+9 · UTC+9
Outside usual working hours
23:00GMT+9
Wednesday, 29 July 2026 in Tokyo
14 hours ahead of Chicago
Working together
The useful part of the difference
A useful manufacturing, finance and aviation corridor.
Calendar boundary
Check the date, not just the hour
At 09:00 in Chicago, Tokyo is on the same calendar date.
Daylight saving time
The gap can move during the year
Seasonal clock changes alter the gap: it is 15 hours ahead on the January reference date and 14 hours ahead on the July reference date. Transition weeks can differ again, so check the exact date.