Best overlap: 8:00 AM to 9:00 AM in Edinburgh is 5:00 PM to 6:00 PM in Tokyo.
8:00 AM to 9:00 AM in Edinburgh is when Tokyo is also working, at 5:00 PM to 6:00 PM their time. Because Tokyo is 9 hours ahead of Edinburgh, the shared window is only about 1 hour. A fixed slot at 8:00 AM in Edinburgh (5:00 PM in Tokyo) saves a lot of back-and-forth. Just remember Edinburgh changes its clocks for daylight saving and Tokyo doesn't, so confirm the overlap whenever the seasons turn.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Edinburgh Europe/London | ||||||||||||||||||||||||
Tokyo Asia/Tokyo |
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