Geneva is 1 hour ahead of Accra
Best overlap: 8:00 AM to 5:00 PM in Accra is 9:00 AM to 6:00 PM in Geneva.
Your window to reach both cities is 8:00 AM to 5:00 PM in Accra, which converts to 9:00 AM to 6:00 PM in Geneva. 9 hours of shared hours is more than enough — slot meetings wherever they're most convenient for the people involved. A quick caveat — Geneva's clocks move for daylight saving and Accra's don't, so the times here are right for only part of the year.