Best overlap: 8:00 AM to 10:00 AM in Geneva is 4:00 PM to 6:00 PM in Tokyo.
The hours that work for both Geneva and Tokyo are 8:00 AM to 10:00 AM (Geneva) and 4:00 PM to 6:00 PM (Tokyo). Tokyo is 8 hours ahead of Geneva, giving you a slim 2 hours to work with. Punctuality matters; start right at 8:00 AM in Geneva (4:00 PM in Tokyo). Note the seasonal wrinkle: when Geneva is on daylight saving and Tokyo isn't, the gap between them grows or shrinks 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Geneva Europe/Zurich | ||||||||||||||||||||||||
Tokyo Asia/Tokyo |
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