What time zone is Massachusetts in?

Massachusetts is primarily in the Eastern Standard Time zone (EST), currently UTC−05:00.

Does Massachusetts observe daylight saving time?

Yes. In 2026, clocks go forward around March 8 and back around November 1.

Boston is the most populous city in Massachusetts.

§ 01United States · EST

Massachusetts runs on Eastern Standard Time (EST), currently UTC−05:00. Its largest city is Boston.

§ 02Time zone & daylight saving

Time zone: Eastern Standard Time (EST)
UTC offset: UTC−05:00
Largest city: Boston
Daylight saving (2026): Yes. In 2026, clocks go forward around March 8 and back around November 1.

§ 03Time difference

New Yorksame

Chicago+1 h

Denver+2 h

Los Angeles+3 h

London−5 h

Tokyo−14 h

Hours are Massachusetts’s current offset relative to each city, daylight saving included.

§ 04Cities in Massachusetts

United States

§ 05Frequently asked

What time zone is Massachusetts in?: Massachusetts is primarily in the Eastern Standard Time zone (EST), currently UTC−05:00.
Does Massachusetts observe daylight saving time?: Yes. In 2026, clocks go forward around March 8 and back around November 1.
What is the largest city in Massachusetts?: Boston is the most populous city in Massachusetts.