What time zone is the Washington, DC, area in?
The entire National Capital Area is within the U.S. Eastern Time Zone. The U.S. Eastern time Zone is 6 hours behind Greenwich Mean Time; one hour ahead of the U. S. Central Time Zone, two hours ahead of the U.S. Mouontain Time Zone; and three hours ahead of the U. S. Pacific time Zone. From the 1st Sunday in April to the last Sunday in October, all U. S. time zones observe Daylight Saving Time by forwarding their clocks ahead one hour.