Houston is 10.5 hours behind Chennai

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

For Chennai and Houston, the standard workday in one city falls outside office hours in the other — that's what 10.5 hours of distance does. Keep live syncs short and infrequent, and let written updates carry the day-to-day between Chennai and Houston. Just remember Houston changes its clocks for daylight saving and Chennai doesn't, so confirm the overlap whenever the seasons turn.