what time zone is dc in
What time zone is Washington DC Time in? Washington DC Time is in the Eastern Time Zone in the United States of America (USA). Eastern Standard Time ( EST ) is 5 hours behind Greenwich Mean Time ( GMT-5 ). Like most states in the USA, Daylight-Saving Time ( DST ) is observed in Washington DC Time , where the time is shifted forward by 1 hour to Eastern Daylight Time ( EDT ); which is 4 hours behind Greenwich Mean Time ( GMT-4 ).