Boston
US
US
UTC-04:00
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🌐America/New_York
Boston to London Time Converter
Boston is currently 5 hours behind London. Use the live clocks below to see the current local time and date in both cities, and scan the 24-hour grids to find the best overlapping business hours for a call or meeting.
Boston
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London
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London
GB
GB
UTC+01:00
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🌐Europe/London
What is the time difference between Boston and London?
Boston is 5 hours behind London all year round.
Current offset: Boston is on UTC-04:00 and London is on UTC+01:00 right now. Offsets shift by one hour when daylight saving time begins or ends, so the gap between the two cities can widen or narrow by an hour at those transitions.
Daylight saving time changes in Boston and London
Daylight saving time (DST) is not observed uniformly around the world. Some countries change their clocks twice a year, some observe DST on dates that differ from their neighbours, and others have abolished it entirely. The dates below are the actual transitions for the current calendar year.
Boston
New York observes daylight saving time. Current offset: UTC-04:00.
- Clocks go forward 1 hour on Sunday, March 8, 2026. Local time switches to UTC-04:00.
- Clocks go back 1 hour on Sunday, November 1, 2026. Local time switches to UTC-05:00.
London
London observes daylight saving time. Current offset: UTC+01:00.
- Clocks go forward 1 hour on Sunday, March 29, 2026. Local time switches to UTC+01:00.
- Clocks go back 1 hour on Sunday, October 25, 2026. Local time switches to UTC+00:00.
Frequently asked questions
How many hours is Boston ahead of London?
Boston is currently 5 hours behind London.
Why does the time difference change?
Because daylight saving time is observed by one city and not the other, or the two switch on different dates. Boston is on UTC-04:00 and London is on UTC+01:00 right now.