Accra is 3 hours behind Doha
Best overlap: 11:00 AM to 6:00 PM in Doha is 8:00 AM to 3:00 PM in Accra.
Doha and Accra overlap from 11:00 AM to 6:00 PM (Doha) to the equivalent 8:00 AM to 3:00 PM in Accra — that's your meeting window. 7 hours of shared hours is more than enough — slot meetings wherever they're most convenient for the people involved.