BST to Boston Time Converter
EST is 5 hours behind GMT. 9:00 AM GMT = 4:00 AM EST.
EST is 5 hours behind GMT at the moment. To convert BST to Boston Time, subtract 5 hours from the BST time: 9:00 AM GMT = 4:00 AM EST.
BST (British Time) is used in United Kingdom from late March to late October. Boston Time (Boston time) is used in Boston, USA.
BST here means British Summer Time, not Bangladesh Standard Time. BST (British Summer Time) is not in force right now: United Kingdom from late March to late October is currently on GMT. This page uses whichever name applies on the date you pick, so the numbers below say GMT.
BST to Boston Time time conversion table
BST to Boston Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| BST | Boston Time |
|---|---|
| 12:00 AM | 7:00 PM−1 |
| 1:00 AM | 8:00 PM−1 |
| 2:00 AM | 9:00 PM−1 |
| 3:00 AM | 10:00 PM−1 |
| 4:00 AM | 11:00 PM−1 |
| 5:00 AM | 12:00 AM |
| 6:00 AM | 1:00 AM |
| 7:00 AM | 2:00 AM |
| BST | Boston Time |
|---|---|
| 8:00 AM | 3:00 AM |
| 9:00 AM | 4:00 AM |
| 10:00 AM | 5:00 AM |
| 11:00 AM | 6:00 AM |
| 12:00 PM | 7:00 AM |
| 1:00 PM | 8:00 AM |
| 2:00 PM | 9:00 AM |
| 3:00 PM | 10:00 AM |
| BST | Boston Time |
|---|---|
| 4:00 PM | 11:00 AM |
| 5:00 PM | 12:00 PM |
| 6:00 PM | 1:00 PM |
| 7:00 PM | 2:00 PM |
| 8:00 PM | 3:00 PM |
| 9:00 PM | 4:00 PM |
| 10:00 PM | 5:00 PM |
| 11:00 PM | 6:00 PM |
Conversion table from BST to Boston Time for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in Boston Time, −1 the previous day.
- ✓ marks 9 AM–5 PM in both places
- Greyed times are night in the destination (10 PM–6 AM)
How to convert BST to Boston Time
Subtract 5 hours from the BST time to get Boston Time.
Example: 9:00 AM GMT = 4:00 AM EST.
Across midnight: 1:00 AM GMT = 8:00 PM EST (previous day). The date changes, so always check the day as well as the hour.
Time difference between BST and Boston Time
The time difference between BST and Boston Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 7 Mar 2026: Boston Time is 5 hours behind of BST.
- 8 Mar 2026 – 28 Mar 2026: Boston Time is 4 hours behind of BST.
- 29 Mar 2026 – 24 Oct 2026: Boston Time is 5 hours behind of BST.
- 25 Oct 2026 – 31 Oct 2026: Boston Time is 4 hours behind of BST.
- 1 Nov 2026 – 31 Dec 2026: Boston Time is 5 hours behind of BST.
BST and Boston Time during daylight saving time
- BST next changes on 28 Mar 2027: clocks go forward one hour at 00:59 local time, from GMT (UTC+0) to BST (UTC+1).
- Boston Time next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from EST (UTC−5) to EDT (UTC−4).
Best time for a meeting between BST and Boston Time
BST and Boston Time share 3 hours of the 9 AM–5 PM working day. Any time between 2:00 PM and 5:00 PM GMT lands between 9:00 AM and 12:00 PM EST, inside working hours for both.
BST to Boston Time FAQ
What is the time difference between BST and Boston Time?
Right now EST is 5 hours behind GMT. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM BST in Boston Time?
9:00 AM GMT is 4:00 AM EST.
What is 12 PM (noon) BST in Boston Time?
12:00 PM GMT is 7:00 AM EST.
Is Boston Time ahead of or behind BST?
EST is 5 hours behind GMT, so it is earlier in Boston Time than in BST.
Does BST change for daylight saving time?
Yes. BST next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
Does Boston Time change for daylight saving time?
Yes. Boston Time next changes on 14 Mar 2027, when clocks go forward one hour from EST to EDT.
What is the best time for a meeting between BST and Boston Time?
BST and Boston Time share 3 hours of the 9 AM–5 PM working day. Any time between 2:00 PM and 5:00 PM GMT lands between 9:00 AM and 12:00 PM EST, inside working hours for both.
Related conversions
Convert Boston Time to BST
Convert BST to other time zones
Convert other time zones to Boston Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.