All countries in Europe except Belarus, Iceland, and Russia observe daylight saving time, and all that do so change on the same date and time, starting on the last Sunday in March and ending on the last Sunday in October.
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Before 1996, DST ended on the last Sunday in September in most European countries; however in the United Kingdom and Ireland DST ended on the fourth (which some years is not the last) Sunday in October.
In 1996, daylight saving time was harmonized throughout the European Union by Directive 2000/84/EC, which moved the end of DST to the last Sunday in October.
In the West European (UTC), Central European (CET, UTC+1), and East European (UTC+2) time zones the change is simultaneous: on both dates the clocks are changed everywhere at 01:00 UTC, i.e. from local times of 01:00/02:00/03:00 to 02:00/03:00/04:00 in March, and vice versa in October.[1]
See also: European Summer Time and British Summer Time which includes a description of Double Summer Time.
These countries or regions do not use daylight saving time:
There has been observation of double summer time:
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