District of Columbia Time Zone Map
Eastern Time, citywide.
Time zones in District of Columbia
| Zone | IANA | Standard | Daylight | Abbr |
|---|---|---|---|---|
| Eastern Time | America/New_York | UTC−5 | UTC−4 | EST / EDT |
Washington, D.C. is on Eastern Time (EST/EDT, UTC−5 in winter, UTC−4 in summer), the same clock as Baltimore and Richmond.
Crossing the state line
Maryland and Virginia surround the District and keep the same Eastern Time. The U.S. Naval Observatory in Washington, D.C. maintains one of the two official U.S. time standards, alongside NIST in Colorado.
Frequently asked questions
What time zone applies to District of Columbia?
District of Columbia is Eastern Time, citywide.
Does District of Columbia use a single time zone?
It does: District of Columbia is fully within Eastern Time.
What time zone is Washington in?
Washington is on Eastern Time (EST / EDT — UTC−5 in winter, UTC−4 in summer, IANA zone America/New_York).
Sources: zone boundaries from the U.S. Department of Transportation’s time zone regulations (49 CFR Part 71); offsets and daylight saving rules from the IANA time zone database. See Data Sources for how this site uses them.