Western European Time

[3][2] The following Western European countries and regions use UTC+00:00 in winter months: All the above countries except Iceland[14] implement daylight saving time in summer (from the last Sunday in March to the last Sunday in October each year), switching to Western European Summer Time (WEST, UTC+01:00), which is one hour ahead of WET.

The nominal span of the UTC+00:00 time zone is 7.5°E to 7.5°W (0° ± 7.5°), but does not include the Netherlands, Belgium, Luxembourg, France, Gibraltar or Spain (except Canary Islands) which use Central European Time (CET) even though these are mostly or completely west of 7.5°E.

[16][17][18] A slight variation of UTC+00:00, based until 1911 on the Paris Meridian, was used in: Until the Second World War, France used UTC+00:00.

[31] Two other occupied territories, Belgium and the Netherlands, did the same, and Spain also switched to CET in solidarity with Germany under the orders of General Franco.

Between 18 February 1968 and 31 October 1971, Irish Standard Time was used all year round.