Boston uses Eastern Time (ET) — UTC−5 in winter (EST) and UTC−4 in summer (EDT). One of America's oldest cities, Boston is the cradle of the American Revolution, home to world-renowned universities, and a global center for education, medicine, and technology.
Everything you need to know about Boston's time zone, UTC offset, and Daylight Saving Time schedule.
From the first Sunday of November to the second Sunday of March, Boston observes EST (UTC−5). This is the standard winter time used across the US East Coast.
From the second Sunday of March to the first Sunday of November, Boston advances to EDT (UTC−4) — clocks move forward 1 hour, giving longer summer evenings.
The official IANA time zone name for Boston is America/New_York. This identifier is used in programming, operating systems, and all modern calendar applications.
Spring forward: 9 March 2025 at 02:00 → 03:00
Fall back: 2 November 2025 at 02:00 → 01:00
Spring forward: 8 March 2026 at 02:00 → 03:00
Fall back: 1 November 2026 at 02:00 → 01:00
Boston is home to Harvard University (Cambridge), MIT, Boston University, Boston College, Northeastern, and over 100 colleges — making it a global education capital.
Home of the Boston Red Sox (Fenway Park), Boston Celtics, New England Patriots, and the Boston Marathon — the world's oldest annual marathon.
Boston is the capital and most populous city of Massachusetts, with a population of over 675,000 (metro area over 4.9 million). Founded in 1630, it is one of the oldest cities in the United States and played a central role in the American Revolution — earning it the nickname "The Cradle of Liberty."
The Freedom Trail is a 2.5-mile red-brick path that connects 16 historic landmarks, including the Massachusetts State House, Paul Revere's House, Old North Church, Faneuil Hall, and the USS Constitution ("Old Ironsides"). The Boston Tea Party Ships & Museum commemorates the 1773 protest that helped spark the Revolution.
Boston is a world leader in education and medicine. Across the river in Cambridge, Harvard University (founded 1636) is the oldest institution of higher learning in the US, and MIT is globally renowned for science and technology. Within Boston, Boston University, Boston College, Northeastern University, and Tufts add to the academic density. The Longwood Medical Area is home to world-class hospitals like Massachusetts General Hospital, Brigham and Women's, and Boston Children's Hospital.
Sports are a religion in Boston. Fenway Park, opened in 1912, is the oldest Major League Baseball stadium still in use, home of the Boston Red Sox. The Boston Celtics (NBA) have won a record 18 championships, the New England Patriots (NFL) are a modern dynasty, and the Boston Bruins (NHL) have a passionate following. The Boston Marathon, held annually on Patriots' Day, is the world's oldest annual marathon.
Boston Logan International Airport (BOS) is the primary gateway to New England, offering non-stop flights to over 100 destinations, including London, Paris, Dublin, Tokyo, and major US hubs.
675,000+ (city) / 4.9M (metro). Capital and largest city of Massachusetts.
Home to Harvard, MIT, Boston University, Boston College, and over 100 colleges and universities.
Fenway Park, Boston Red Sox, Celtics, Patriots, Bruins, and the Boston Marathon.
Freedom Trail, Paul Revere's House, Faneuil Hall, USS Constitution, Boston Tea Party Ships.
Humid continental. Warm, humid summers (avg. 28°C / 82°F in July), cold, snowy winters (avg. -2°C / 28°F in January).
+1 (US country code). Area codes: 617, 857. Currency: US Dollar (USD, $).
Current time in major cities compared to Boston. Times update live every second.
Note on DST transitions: The offsets shown above reflect the current live offset, which changes twice a year due to Daylight Saving Time. The US, EU, and other regions change their clocks on different dates, which means the difference between Boston and a European city can vary by 1 hour for a short period in spring and autumn. Always verify the exact time difference around DST transition dates for critical scheduling.
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Boston's Eastern Time zone shapes the rhythm of East Coast education, medicine, finance, and sports — from Harvard lectures to Fenway Park night games. The Eastern Time Zone is home to nearly 150 million people across the US and Canada.
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Common questions about Boston's time zone, UTC offset, and Daylight Saving Time.