World Timezones

Boston to London Converter

Compare London to Boston instead
Boston12:44 amMon, Jun 8
BostonEDT
MA, United States · UTC-4
12:44 amMon, Jun 8
12a
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11p
LondonBST
ENG, United Kingdom · UTC+1
5:44 amMon, Jun 8
5a
6a
7a
8a
9a
10a
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12p
1p
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Offset

The time difference between Boston and London is 5 hours.

5 hours

Boston (EDT) is behind London (BST).

EDT: UTC-4

BST: UTC+1

Both zones are currently observing daylight saving time.

When to schedule

Business-hours overlap: 9 AM–12 PM in Boston (2 PM–5 PM in London).

Both teams are in working hours during this window on weekdays.

Suggested time: 10:00 AM Boston (3:00 PM London).

This window may shift by an hour during daylight saving time.

Public holidays in 2026

National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.

United States

  • New Year's DayThu, Jan 1
  • Martin Luther King, Jr. DayMon, Jan 19
  • Presidents DayMon, Feb 16
  • Memorial DayMon, May 25
  • Juneteenth National Independence DayFri, Jun 19
  • Independence DayFri, Jul 3
  • Labour DayMon, Sep 7
  • Columbus DayMon, Oct 12
  • Veterans DayWed, Nov 11
  • Thanksgiving DayThu, Nov 26
  • Christmas DayFri, Dec 25

United Kingdom

  • Good FridayFri, Apr 3
  • Early May Bank HolidayMon, May 4
  • Spring Bank HolidayMon, May 25
  • Christmas DayFri, Dec 25
  • St. Stephen's DayMon, Dec 28

About these zones

Boston uses Eastern Time (EST, or EDT). To call United States, dial +1.

London uses Greenwich Mean Time (GMT, or BST). To call United Kingdom, dial +44.

London is approximately 3,250 miles northeast of Boston.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

BostonLondonDay
12:00 am5:00 amSame day
1:00 am6:00 amSame day
2:00 am7:00 amSame day
3:00 am8:00 amSame day
4:00 am9:00 amSame day
5:00 am10:00 amSame day
6:00 am11:00 amSame day
7:00 am12:00 pmSame day
8:00 am1:00 pmSame day
9:00 am2:00 pmSame day
10:00 am3:00 pmSame day
11:00 am4:00 pmSame day
12:00 pm5:00 pmSame day
1:00 pm6:00 pmSame day
2:00 pm7:00 pmSame day
3:00 pm8:00 pmSame day
4:00 pm9:00 pmSame day
5:00 pm10:00 pmSame day
6:00 pm11:00 pmSame day
7:00 pm12:00 am+1 day
8:00 pm1:00 am+1 day
9:00 pm2:00 am+1 day
10:00 pm3:00 am+1 day
11:00 pm4:00 am+1 day

Daylight saving time

Both zones observe daylight saving time, but they transition on different dates.

Boston: next transition on Sunday, November 1, 2026.

London: next transition on Sunday, October 25, 2026.

For approximately 7 days between transitions, the offset between Boston and London differs from its typical value. Recurring meetings during this window will shift by one hour.

See the daylight saving time page for transition dates across every time zone.

Daylight today

Boston
Sunrise
5:09 AM
Sunset
8:20 PM
Day length
15h 11m
London
Sunrise
4:46 AM
Sunset
9:15 PM
Day length
16h 30m

Daylight overlap: 11h 7m — 5:09 AM–4:15 PM in Boston (10:09 AM–9:15 PM in London). Both locations are in daylight during this window.

Cities in these zones

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Eastern Time

  • EWR
  • HPN
  • JFK
  • LGA
  • TEB
  • ILG
  • PHL
  • TTN
  • CLT
  • USA

Airports in Greenwich Mean Time

  • LCY
  • LGW
  • LHR
  • LTN
  • STN
  • BHX
  • EMA
  • GLA
  • PIK
  • LBA

Related conversions

Common conversions

What is 9:00 am Boston in London?
9:00 am Boston is 2:00 pm London.
What is 12:00 pm Boston in London?
12:00 pm Boston is 5:00 pm London.
What is 12:30 pm Boston in London?
12:30 pm Boston is 5:30 pm London.
What is 2:00 pm Boston in London?
2:00 pm Boston is 7:00 pm London.
What is 5:00 pm Boston in London?
5:00 pm Boston is 10:00 pm London.
What is 11:30 pm Boston in London?
11:30 pm Boston is 4:30 am London, the next day.