The time difference between St Louis and Tokyo is 14 hours. When it is 12:00 noon in St Louis, it is 02:00 in Tokyo. St Louis uses the America/Chicago time zone (UTC-5), while Tokyo uses Asia/Tokyo (UTC+9).
With a 14 hours gap, there is no standard business-hours overlap between St Louis and Tokyo. One party will need to adjust their schedule. Early mornings in Tokyo or late evenings in St Louis tend to be the most practical compromise.
Use this table to quickly convert any hour from St Louis time to Tokyo time. Rows highlighted in green indicate overlapping business hours in both cities.
| St Louis | Tokyo | |
|---|---|---|
| 00:00 | 14:00 | Night |
| 01:00 | 15:00 | Night |
| 02:00 | 16:00 | Night |
| 03:00 | 17:00 | Night |
| 04:00 | 18:00 | Night |
| 05:00 | 19:00 | Night |
| 06:00 | 20:00 | |
| 07:00 | 21:00 | |
| 08:00 | 22:00 | |
| 09:00 | 23:00 | |
| 10:00 | 00:00 (+1 day) | |
| 11:00 | 01:00 (+1 day) | |
| 12:00 | 02:00 (+1 day) | |
| 13:00 | 03:00 (+1 day) | |
| 14:00 | 04:00 (+1 day) | |
| 15:00 | 05:00 (+1 day) | |
| 16:00 | 06:00 (+1 day) | |
| 17:00 | 07:00 (+1 day) | |
| 18:00 | 08:00 (+1 day) | |
| 19:00 | 09:00 (+1 day) | |
| 20:00 | 10:00 (+1 day) | |
| 21:00 | 11:00 (+1 day) | |
| 22:00 | 12:00 (+1 day) | Night |
| 23:00 | 13:00 (+1 day) | Night |
St Louis is currently observing daylight saving time, while Tokyo is on standard time. When St Louis switches back to standard time, the difference between these two cities will shift by 1 hour.
The time difference is 14 hours. Tokyo is 14 hours ahead of St Louis.
Yes. One of these cities observes DST while the other does not, so the difference shifts by 1 hour when DST begins or ends.
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.
Add 14 hours to St Louis time to get Tokyo 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.