Geneva is 2 hours behind Istanbul
Best overlap: 10:00 AM to 6:00 PM in Istanbul is 8:00 AM to 4:00 PM in Geneva.
Your window to reach both cities is 10:00 AM to 6:00 PM in Istanbul, which converts to 8:00 AM to 4:00 PM in Geneva. Geneva is 2 hours behind Istanbul, yet you get a full 8 hours of shared hours — enough to schedule around lunches, focus time, and preferences with ease. A quick caveat — Geneva's clocks move for daylight saving and Istanbul's don't, so the times here are right for only part of the year.