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"Time in Europe
light green "UTC+03:00 (in Russia "Moscow Time)
ochre "UTC+02:00: "Eastern European Time
UTC+03:00: "Eastern European Summer Time
yellow UTC+02:00 (in Russia "Kaliningrad Time)
red "UTC+01:00: "Central European Time
UTC+02:00: "Central European Summer Time
blue "UTC±00:00: "Western European Time
UTC+01:00: Western European Summer Time
light blue UTC±00:00: Western European Time
violet "UTC-01:00 (in Portugal "Atlantic/Azores Time)
UTC±00:00 (in Portugal Atlantic/Azores Summer Time)
Light colours indicate where standard time is observed all year;
dark colours indicate where a "summer time is observed.


Western European Summer Time (WEST) is a summer "daylight saving time scheme, 1 hour ahead of "Coordinated Universal Time. It is used in:

Western European Summer Time is known in the countries concerned as:

The scheme runs from the last Sunday in March to the last Sunday in October each year. At both the start and end of the schemes, clock changes take place at 01:00 "UTC. During the winter, "Greenwich Mean Time ("UTC+0) is used.

The start and end dates of the scheme are asymmetrical in terms of daylight hours: the "vernal time of year with a similar amount of daylight to late October is mid-February, well before the start of summer time. The asymmetry reflects temperature more than the length of daylight.

Ireland observes Standard Time during the summer months and changes to "UTC+0 in winter.[1] As Ireland's winter time period begins on the last Sunday in October and finishes on the last Sunday in March, the result is the same as if it observed summer time.

Contents

Usage[edit]

The following countries and territories use Western European Summer Time during the summer, between 1:00 UTC on the last Sunday of March and 1:00 UTC on the last Sunday of October.

Ireland[edit]

In Ireland, since the Standard Time (Amendment) Act, 1971, Ireland has used "UTC+1 in summer (officially "standard time",[9] "Irish: am caighdeánach,[10] though usually called "summer time") and "UTC+0 in winter (officially "winter time").[11]

Portugal[edit]

"Portugal moved to Central European Time and Central European Summer Time in 1992, but reverted to Western European Time in 1996 after concluding that energy savings were small, it had a disturbing effect on children's sleeping habits as it would not get dark until 22:00 or 22:30 in summer evenings, during winter mornings the sun was still rising at 9:00, with repercussions on standards of learning and school performance, and insurance companies reported a rise in the number of accidents.[12]

United Kingdom[edit]

Starting in 1916, the dates for the beginning and end of BST each year were mandated by the "Parliament of the United Kingdom. In February 2002, the Summer Time Order 2002[13] changed the dates and times to match European rules for moving to and from daylight saving time.

Start and end dates of British Summer Time and Irish Standard Time[edit]

Summer Begins (BST) Ends (GMT) UK Notes Ireland Notes
2017 Sun 26 March 01:00 Sun 29 October 01:00
2016 Sun 27 March 01:00 Sun 30 October 01:00
2015 Sun 29 March 01:00 Sun 25 October 01:00
2014 Sun 30 March 01:00 Sun 26 October 01:00
2013 Sun 31 March 01:00 Sun 27 October 01:00
2012 Sun 25 March 01:00 Sun 28 October 01:00
2011 Sun 27 March 01:00 Sun 30 October 01:00
2010 Sun 28 March 01:00 Sun 31 October 01:00
2009 Sun 29 March 01:00 Sun 25 October 01:00
2008 Sun 30 March 01:00 Sun 26 October 01:00
2007 Sun 25 March 01:00 Sun 28 October 01:00
2006 Sun 26 March 01:00 Sun 29 October 01:00
2005 Sun 27 March 01:00 Sun 30 October 01:00
2004 Sun 28 March 01:00 Sun 31 October 01:00
2003 Sun 30 March 01:00 Sun 26 October 01:00
2002 Sun 31 March 01:00 Sun 27 October 01:00 UK adopts EU practice[13][14] Ireland adopts EU Practice [14][15]
2001 Sun 25 March 01:00 Sun 28 October 01:00
2000 Sun 26 March 01:00 Sun 29 October 01:00
1999 Sun 28 March 01:00 Sun 31 October 01:00
1998 Sun 29 March 01:00 Sun 25 October 01:00
1997 Sun 30 March 01:00 Sun 26 October 01:00
1996 Sun 31 March 01:00 Sun 27 October 01:00
1995 Sun 26 March 01:00 Sun 22 October 01:00
1994 Sun 27 March 01:00 Sun 23 October 01:00
1993 Sun 28 March 01:00 Sun 24 October 01:00
1992 Sun 29 March 01:00 Sun 25 October 01:00
1991 Sun 31 March 01:00 Sun 27 October 01:00
1990 Sun 25 March 01:00 Sun 28 October 01:00
1989 Sun 26 March 01:00 Sun 29 October 01:00
1988 Sun 27 March 01:00 Sun 23 October 01:00
1987 Sun 29 March 01:00 Sun 25 October 01:00
1986 Sun 30 March 01:00 Sun 26 October 01:00
1985 Sun 31 March 01:00 Sun 27 October 01:00
1984 Sun 25 March 01:00 Sun 28 October 01:00
1983 Sun 27 March 01:00 Sun 23 October 01:00
1982 Sun 28 March 01:00 Sun 24 October 01:00
1981 Sun 29 March 01:00 Sun 25 October 01:00
1980 Sun 16 March 02:00 Sun 26 October 02:00
1979 Sun 18 March 02:00 Sun 28 October 02:00
1978 Sun 19 March 02:00 Sun 29 October 02:00
1977 Sun 20 March 02:00 Sun 23 October 02:00
1976 Sun 21 March 02:00 Sun 24 October 02:00
1975 Sun 16 March 02:00 Sun 26 October 02:00
1974 Sun 17 March 02:00 Sun 27 October 02:00
1973 Sun 18 March 02:00 Sun 28 October 02:00
1972 Sun 19 March 02:00 Sun 29 October 02:00
1971 Sun 31 October 02:00 BST all year ends IST all year ends
1970 BST all year IST all year
1969 BST all year IST all year
1968 Sun 18 February 01:00 BST all year begins IST all year begins
1967 Sun 19 March 02:00 Sun 29 October 02:00
1966 Sun 20 March 02:00 Sun 23 October 02:00
1965 Sun 21 March 02:00 Sun 24 October 02:00
1964 Sun 22 March 02:00 Sun 25 October 02:00
1963 Sun 31 March 02:00 Sun 27 October 02:00
1962 Sun 25 March 02:00 Sun 28 October 02:00
1961 Sun 26 March 02:00 Sun 29 October 02:00
1960 Sun 10 April 02:00 Sun 2 October 02:00
1959 Sun 12 April 02:00 Sun 4 October 02:00
1958 Sun 20 April 02:00 Sun 5 October 02:00
1957 Sun 14 April 02:00 Sun 6 October 02:00
1956 Sun 22 April 02:00 Sun 7 October 02:00
1955 Sun 17 April 02:00 Sun 2 October 02:00
1954 Sun 11 April 02:00 Sun 3 October 02:00
1953 Sun 19 April 02:00 Sun 4 October 02:00
1952 Sun 20 April 02:00 Sun 26 October 02:00
1951 Sun 15 April 02:00 Sun 21 October 02:00
1950 Sun 16 April 02:00 Sun 29 October 02:00
1949 Sun 3 April 02:00 Sun 30 October 02:00
1948 Sun 14 March 02:00 Sun 31 October 02:00
1947 Sun 2 November 02:00 Back to GMT Back to GMT
1947 Sun 13 April 02:00 Sun 10 August 02:00 BDST (2 hours ahead) IST / no DST
1947 Sun 16 March 02:00 BST begins IST begins
1946 Sun 14 April 02:00 Sun 6 October 02:00 Back to GMT (Oct) Back to GMT (Oct)
1945 Sun 7 October 02:00 Back to GMT IST
1945 Mon 2 April 01:00 Sun 15 July 01:00 BDST (2 hours ahead) IST / no DST
1944 Sun 2 April 01:00 Sun 17 September 01:00 BDST (2 hours ahead) IST / no DST
1943 Sun 4 April 01:00 Sun 15 August 01:00 BDST (2 hours ahead) IST / no DST
1942 Sun 5 April 01:00 Sun 9 August 01:00 BDST (2 hours ahead) IST / no DST
1941 Sun 4 May 01:00 Sun 10 August 01:00 BDST (2 hours ahead) IST / no DST
1940 Sun 25 February 02:00 BST "1940–1945 IST 1940–1946
1939 Sun 16 April 02:00 Sun 19 November 02:00
1938 Sun 10 April 02:00 Sun 2 October 02:00
1937 Sun 18 April 02:00 Sun 3 October 02:00
1936 Sun 19 April 02:00 Sun 4 October 02:00
1935 Sun 14 April 02:00 Sun 6 October 02:00
1934 Sun 22 April 02:00 Sun 7 October 02:00
1933 Sun 9 April 02:00 Sun 8 October 02:00
1932 Sun 17 April 02:00 Sun 2 October 02:00
1930 Sun 13 April 02:00 Sun 5 October 02:00
1929 Sun 21 April 02:00 Sun 6 October 02:00
1928 Sun 22 April 02:00 Sun 7 October 02:00
1927 Sun 10 April 02:00 Sun 2 October 02:00
1926 Sun 18 April 02:00 Sun 3 October 02:00
1925 Sun 19 April 02:00 Sun 4 October 02:00
1924 Sun 13 April 02:00 Sun 21 September 02:00
1923 Sun 22 April 02:00 Sun 16 September 02:00
1922 Sun 26 March 02:00 Sun 8 October 02:00
1921 Sun 3 April 02:00 Sun 2 October 02:00
1920 Sun 28 March 02:00 Sun 24 October 02:00
1919 Sun 30 March 02:00 Sun 28 September 02:00
1918 Sun 24 March 02:00 Sun 29 September 02:00
1917 Sun 8 April 02:00 Sun 16 September 02:00
1916 Sun 21 May 02:00 Sun 1 October 02:00 Abolition of DMT

Note: Until 1 October 1916 time in all of Ireland was based on "Dublin Mean Time, GMT − 25 minutes.

References[edit]

Further reading[edit]

External links[edit]

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