What is BST in TRT?

Turkey Time is 3 hours ahead

British Time is on UTC+0:00 and Turkey Time is on UTC+3:00 right now. The gap changes during the year — see below.

Convert a time

GMT — British Time

TRT — Turkey Time

11:00 am

TRT, Sat

Time in London: 8:29:16 AM
Time in Istanbul: 11:29:16 AM
Difference: +3 h
Next clock change: March 28, 2027

When the difference changes

British Time and Turkey 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:

Now – March 28, 2027Turkey Time is 3 hours ahead
March 28, 2027 – October 31, 2027Turkey Time is 2 hours ahead
October 31, 2027 – onwardsTurkey Time is 3 hours ahead

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.

Turkey Time

No clock changes

Turkey Time stays on TRT all year, so its offset from UTC never moves.

BST to TRT conversion table

Every hour of Saturday, November 7, 2026, converted from British Time to Turkey Time. 3 of the 24 hours fall on a different calendar day in Istanbul, which is marked.

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

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

Scheduling between the two

Working hours overlap from 9:00 am to 3:00 pm GMT, which is 12:00 pm to 6:00 pm TRT. 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.

Turkey Time (TRT) is used in all of Türkiye, on a permanent UTC+3 since 2016