Riyadh is 1 hour ahead of Bucharest
Best overlap: 8:00 AM to 5:00 PM in Bucharest is 9:00 AM to 6:00 PM in Riyadh.
Both offices are open during 8:00 AM to 5:00 PM Bucharest time, which is 9:00 AM to 6:00 PM in Riyadh. Scheduling is forgiving here: with 9 hours of overlap, a missed slot just means picking another one the same day. Heads up: because Bucharest changes its clocks and Riyadh doesn't, the difference moves by an hour twice a year. Confirm the overlap around the DST switch.