Vienna is 1 hour behind Bucharest
Best overlap: 9:00 AM to 6:00 PM in Bucharest is 8:00 AM to 5:00 PM in Vienna.
Your shared working hours run 9:00 AM to 6:00 PM in Bucharest (8:00 AM to 5:00 PM in Vienna). Vienna is 1 hour behind Bucharest, and with 9 hours of overlap you can even run back-to-back calls without stepping outside business hours.