Vienna is 1 hour behind Riyadh
Best overlap: 9:00 AM to 6:00 PM in Riyadh is 8:00 AM to 5:00 PM in Vienna.
Riyadh and Vienna overlap from 9:00 AM to 6:00 PM (Riyadh) to the equivalent 8:00 AM to 5:00 PM in Vienna — that's your meeting window. Vienna is 1 hour behind Riyadh, yet you get a full 9 hours of shared hours — enough to schedule around lunches, focus time, and preferences with ease. One seasonal catch: Vienna springs forward and falls back, but Riyadh doesn't, so the gap changes by an hour for several months of the year.