Atlanta is 1 hour ahead of Houston. Houston uses Central Time (CT). Atlanta uses Eastern Time (ET). Both observe daylight saving time.
When it's 12:00 PM in Houston, it's 1:00 PM in Atlanta.
Most hours work! With only a 1 hour difference, business hours overlap almost entirely.
Houston and Atlanta are both major Southern US cities and airline hubs. Direct flights connect them in about 2 hours.