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DateAlmanac

What is BST in GMT?

Greenwich Mean Time is the same time

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

Convert a time

GMT — Greenwich Mean Time

8:00 am

GMT, Sat

Time in London
8:29:00 AM
Time in Greenwich
8:29:00 AM
Difference
None
Next clock change
March 28, 2027

When the difference changes

British Time and Greenwich Mean 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, 2027Greenwich Mean Time is the same time
  2. March 28, 2027 – October 31, 2027Greenwich Mean Time is 1 hour behind
  3. October 31, 2027 – onwardsGreenwich Mean 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

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.

Greenwich Mean Time

No clock changes

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

BST to GMT conversion table

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

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.

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.

Other conversions