The time difference between Yokohama and Chicago is 15 hours. When it is 12:00 noon in Yokohama, it is 21:00 in Chicago. Yokohama uses the Asia/Tokyo time zone (UTC+9), while Chicago uses America/Chicago (UTC-6).
With a 15 hours gap, there is no standard business-hours overlap between Yokohama and Chicago. One party will need to adjust their schedule. Early mornings in Yokohama or late evenings in Chicago tend to be the most practical compromise.
Use this table to quickly convert any hour from Yokohama time to Chicago time. Rows highlighted in green indicate overlapping business hours in both cities.
| Yokohama | Chicago | |
|---|---|---|
| 00:00 | 09:00 (-1 day) | Night |
| 01:00 | 10:00 (-1 day) | Night |
| 02:00 | 11:00 (-1 day) | Night |
| 03:00 | 12:00 (-1 day) | Night |
| 04:00 | 13:00 (-1 day) | Night |
| 05:00 | 14:00 (-1 day) | Night |
| 06:00 | 15:00 (-1 day) | |
| 07:00 | 16:00 (-1 day) | |
| 08:00 | 17:00 (-1 day) | |
| 09:00 | 18:00 (-1 day) | |
| 10:00 | 19:00 (-1 day) | |
| 11:00 | 20:00 (-1 day) | |
| 12:00 | 21:00 (-1 day) | |
| 13:00 | 22:00 (-1 day) | |
| 14:00 | 23:00 (-1 day) | |
| 15:00 | 00:00 | |
| 16:00 | 01:00 | |
| 17:00 | 02:00 | |
| 18:00 | 03:00 | |
| 19:00 | 04:00 | |
| 20:00 | 05:00 | |
| 21:00 | 06:00 | |
| 22:00 | 07:00 | Night |
| 23:00 | 08:00 | Night |
Neither Yokohama nor Chicago is currently observing daylight saving time. If either city observes DST, the time difference will change by 1 hour when DST begins or ends. Always double-check before scheduling across these time zones during March–April and October–November.
The time difference is 15 hours. Chicago is 15 hours behind Yokohama.
It can. If either Yokohama or Chicago observes daylight saving time, the gap will shift by 1 hour during the transition periods (typically March–April and October–November).
There is no ideal window during standard business hours. Consider scheduling at the edges — early morning for the city that is ahead and late afternoon for the city that is behind.
Subtract 15 hours from Yokohama time to get Chicago time. Use the hour-by-hour table above for a quick reference.
For sunrise and sunset data, visit TheSunsetTimes.com. For detailed DST schedules, see DaylightSavingTime.info.