Best overlap: 8:00 AM to 12:00 PM in Helsinki is 2:00 PM to 6:00 PM in Tokyo.
Shoot for 8:00 AM to 12:00 PM in Helsinki; your Tokyo colleagues will see that as 2:00 PM to 6:00 PM. Tokyo is 6 hours ahead of Helsinki, so you've got a workable 4-hour overlap — ideal for a standing meeting around 8:00 AM in Helsinki (2:00 PM in Tokyo). For part of the year the maths changes: Helsinki observes daylight saving, Tokyo does not, shifting the overlap by an hour.
| Local time | 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Helsinki Europe/Helsinki | ||||||||||||||||||||||||
Tokyo Asia/Tokyo |
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