US Time Zone Map

Massachusetts Time Zone Map

Eastern Time, statewide.

Your time11:38 PMSAT, OCT 31UTC+5:30
Pacific timePacific11:08 AMSAT, OCT 31UTC-7
Mountain timeMountain12:08 PMSAT, OCT 31UTC-6
Central timeCentral1:08 PMSAT, OCT 31UTC-5
Eastern timeEastern2:08 PMSAT, OCT 31UTC-4
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Time zones in Massachusetts

ZoneIANAStandardDaylightAbbr
Eastern TimeAmerica/New_YorkUTC−5UTC−4EST / EDT

Massachusetts is Eastern Time statewide (EST/EDT, UTC−5 in winter, UTC−4 in summer), from the Berkshires to Cape Cod; its city Boston follows the same clock.

Crossing the state line

All five neighbours, New York, Vermont, New Hampshire, Rhode Island and Connecticut, are on Eastern Time. A 2017 state commission studied moving Massachusetts to year-round Atlantic Time; it advised doing so only alongside other Northeast states, and no change was made.

Frequently asked questions

What time zone applies to Massachusetts?

Massachusetts is Eastern Time, statewide.

Does Massachusetts use a single time zone?

It does: Massachusetts is fully within Eastern Time.

What time zone is Boston in?

Boston 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.