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DateAlmanac

What is GMT in BST?

British Time is the same time

Greenwich Mean Time and British Time are both on UTC+0:00 right now. The gap changes during the year — see below.

Convert a time

GMT — British Time

8:00 am

GMT, Sat

Time in Greenwich
8:28:57 AM
Time in London
8:28:57 AM
Difference
None
Next clock change
March 28, 2027

When the difference changes

Greenwich Mean Time and British Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:

  1. Now – March 28, 2027British Time is the same time
  2. March 28, 2027 – October 31, 2027British Time is 1 hour ahead
  3. October 31, 2027 – onwardsBritish Time is the same time

Periods shorter than a day are not listed. Each zone changes at its own local time, so on a date when both move there are a few hours when the gap is briefly something else.

Daylight saving

Greenwich Mean Time

No clock changes

Greenwich Mean Time stays on GMT all year, so its offset from UTC never moves.

British Time

Sunday, March 28, 2027

Clocks go forward one hour — 1:00 am becomes 2:00 am local time, and the zone is on BST after that.

GMT to BST conversion table

Every hour of Saturday, November 7, 2026, converted from Greenwich Mean Time to British Time.

12:00 am GMT
12:00 am GMT
1:00 am GMT
1:00 am GMT
2:00 am GMT
2:00 am GMT
3:00 am GMT
3:00 am GMT
4:00 am GMT
4:00 am GMT
5:00 am GMT
5:00 am GMT
6:00 am GMT
6:00 am GMT
7:00 am GMT
7:00 am GMT
8:00 am GMT
8:00 am GMT
9:00 am GMT
9:00 am GMT
10:00 am GMT
10:00 am GMT
11:00 am GMT
11:00 am GMT
12:00 pm GMT
12:00 pm GMT
1:00 pm GMT
1:00 pm GMT
2:00 pm GMT
2:00 pm GMT
3:00 pm GMT
3:00 pm GMT
4:00 pm GMT
4:00 pm GMT
5:00 pm GMT
5:00 pm GMT
6:00 pm GMT
6:00 pm GMT
7:00 pm GMT
7:00 pm GMT
8:00 pm GMT
8:00 pm GMT
9:00 pm GMT
9:00 pm GMT
10:00 pm GMT
10:00 pm GMT
11:00 pm GMT
11:00 pm GMT

Scheduling between the two

Working hours overlap from 9:00 am to 6:00 pm GMT, which is 9:00 am to 6:00 pm GMT. Anything inside that window falls in the normal working day at both ends.

A note on BST: it can also mean Bangladesh Standard Time (UTC+6). This page means British Summer Time.

Greenwich Mean Time (GMT) is used in as a fixed UTC+0 offset. Note that the UK itself leaves GMT every summer — see British Time below.

British Time (GMT) is used in the whole United Kingdom. In winter the UK is on GMT; from late March to late October it is on BST, an hour ahead.

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