Zurich is 1 hour behind Doha

Best overlap: 9:00 AM to 6:00 PM in Doha is 8:00 AM to 5:00 PM in Zurich.

For a call that suits both sides, look at 9:00 AM to 6:00 PM in Doha / 8:00 AM to 5:00 PM in Zurich. Because you share 9 hours of the workday, there's no need to compromise; book the time that suits the meeting, not the map. Remember that Zurich shifts for daylight saving and Doha doesn't, so recalculate the overlap after each clock change.