The following countries and territories use Central European Time during the winter only, between 1:00 UTC on the last Sunday of October and 1:00 UTC on the last Sunday of March:
Ireland and the United Kingdom experimentally adopted CET in the years 1968–71; however, this experiment proved unpopular and short-lived, mainly due to the increased number of road accidents (many involving children walking to school) in the dark winter mornings. Portugal used CET in the years 1966–76 and 1992–96.
Central European Time usage in Africa
These African countries use Central European Time (see West Africa Time) throughout the year:
Since political, in addition to purely geographical, criteria are used in the drawing of time zones, it follows that actual time zones do not precisely adhere to meridian lines. The CET (UTC+1) time zone, were it drawn by purely geographical terms, would consist of exactly the area between meridians 7°30′ E and 22°30′ E. As a result, there are European locales that despite lying in an area with a "physical" UTC+1 time, actually use another time zone (UTC+2 in particular – there are no "physical" UTC+1 areas that employ UTC); contrariwise, there are European areas that have gone for UTC+1, even though their "physical" time zone is UTC (typically), UTC-1 (westernmost Spain), or UTC+2 (e.g. the very easternmost parts of Norway, Poland, and Serbia). Following is a list of such "incongruencies":
Gibraltar maintained UTC+1 all year until the opening of the land frontier with Spain in 1982 when it followed its neighbour and introduced CEST.
Areas that use UTC+1
Countries (or parts thereof) west of 7°30′ W ("physical" UTC-1) that use UTC+1
The westernmost part of Spain (Galicia, e.g. the city of A Coruña); Cape Finisterre in Galicia, at 9°16′ W, is the westernmost place where CET is applied
Countries (or parts thereof) between 7°30′ W and 7°30′ E ("physical" UTC) that use UTC+1
The northeast of Norway, lying north of Finland, roughly coinciding with the county of Finnmark; for instance Vadsø, the capital of Finnmark, has a longitude of 23°49′ E. Actually, the easternmost town in Norway, Vardø, lies at 30°51′ E, which is so far east, so as to be east even of the central meridian of EET (UTC+2), i.e. east of Istanbul and Alexandria. The sun reaches its highest point at 10:56 (when not DST).
It is also interesting to note that the Norwegian-Russian border (incl. border passings such as Kirkenes) is the only place where CET (UTC+1) borders Moscow time (UTC+3), resulting in a two hours time change for the passenger crossing that border. More so, there exists a "tri-zone" point (where UTC+1, UTC+2, and UTC+3 meet) at the Norway-Finland-Russia tripoint (look for the town of Nautsi in this map). This is the only "tri-zone" point within Europe. It is interesting to perform the following mental experiment when looking at this map: Go to the westernmost point of the red area (the Jäniskoski-Niskakoski area); this belongs to Russian jurisdiction, hence the time there is UTC+3. Then, take a northeastern (NE) direction (that is an eastwards direction); you will soon be crossing into Finnish territory, thus moving to the UTC+2 time zone. Continuing in that direction, you will eventually reach the Finland-Norway border and enter Norway, thus passing into the UTC+1 time zone. So, moving in a (north–)easterly direction, you will be moving from UTC+3 to UTC+2 to UTC+1! A note for time zone tourists: If you need a visa to enter Russia it is illegal to cross the border outside border controls.
Areas geographically located within UTC+1 longitudes
Countries (or parts thereof) west of 22°30′ E ("physical" UTC+1) that use UTC+2
The southwestern coast of Finland, including the city of Turku; also the Åland islands (of Finnish jurisdiction) – the Åland islands are the westernmost locale applying EET in the whole of Europe