In reply to Leonid Batkhan.

Leonid,

While it is true that GMT can be constant all year, but we also have Daylight Saving Time in the UK (called British Summer Time) from 2am on the last Sunday in March to 2am on the last Sunday in October. Europe used to end Daylight Saving Time on the last Sunday in September until 1996, when it changed to the same date as in the UK. Finally, from October 2022 Europe will no longer use Daylight Saving Time.

Who said dates and times were boring!..............Phil