Riyadh is 10 hours ahead of San Diego

There is no standard 8-to-6 overlap. Someone joins early or late.

San Diego and Riyadh are too far apart in time (10 hours) for their workdays to line up during regular hours. For anything urgent, agree on an early-morning or late-night bridge hour in advance so nobody's caught off guard. Heads up: because San Diego changes its clocks and Riyadh doesn't, the difference moves by an hour twice a year. Confirm the overlap around the DST switch.