Best overlap: 9:00 AM to 6:00 PM in Istanbul is 8:00 AM to 5:00 PM in Amsterdam.
The hours that work for both Istanbul and Amsterdam are 9:00 AM to 6:00 PM (Istanbul) and 8:00 AM to 5:00 PM (Amsterdam). 9 hours of shared hours is more than enough — slot meetings wherever they're most convenient for the people involved. Bear in mind Amsterdam shifts for daylight saving while Istanbul stays fixed — recheck these hours 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Istanbul Europe/Istanbul | ||||||||||||||||||||||||
Amsterdam Europe/Amsterdam |
London to New York is five hours apart, except for the five weeks a year when it isn't. Exact overlap windows for every US zone, the 2026 DST mismatch dates, and where to put the recurring sync. -