Best overlap: 3:00 PM to 6:00 PM in Tokyo is 8:00 AM to 11:00 AM in Warsaw.
For the smoothest call, aim inside 3:00 PM to 6:00 PM in Tokyo, i.e. 8:00 AM to 11:00 AM in Warsaw. A 3-hour overlap gives you a workable daily window; aim for earlier in it to avoid clipping the end of someone's day. Note that Warsaw follows daylight saving while Tokyo stays put, so the times above drift by an hour seasonally.
| 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 | ||||||||||||||||||||||||
Warsaw Europe/Warsaw |
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