Connecticut Time Zone Map
Eastern Time, statewide.
Time zones in Connecticut
| Zone | IANA | Standard | Daylight | Abbr |
|---|---|---|---|---|
| Eastern Time | America/New_York | UTC−5 | UTC−4 | EST / EDT |
Connecticut is Eastern Time statewide (EST/EDT, UTC−5 in winter, UTC−4 in summer); Hartford, New Haven and Stamford follow the same clock as New York City and Boston.
Crossing the state line
New York, Massachusetts and Rhode Island are all on Eastern Time, so Metro-North trains from New Haven to Grand Central and Amtrak trains to Boston stay on one clock end to end.
Frequently asked questions
What time zone is Connecticut in?
Connecticut is Eastern Time, statewide.
Does Connecticut span more than one time zone?
No — Connecticut sits entirely within one time zone (Eastern Time).
What time zone is Hartford in?
Hartford 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.