Best overlap: 2:00 PM to 6:00 PM in Tokyo is 8:00 AM to 12:00 PM in Helsinki.
For a call that suits both sides, look at 2:00 PM to 6:00 PM in Tokyo / 8:00 AM to 12:00 PM in Helsinki. With 4 hours of overlap, 2:00 PM in Tokyo (8:00 AM in Helsinki) is a comfortable, repeatable slot for both sides. Remember that Helsinki shifts for daylight saving and Tokyo doesn't, so recalculate the overlap after each clock change.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Tokyo Asia/Tokyo | ||||||||||||||||||||||||
Helsinki Europe/Helsinki |
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