|
Western European Summer Time (WEST) is a summer daylight saving time scheme, 1 hour ahead of Coordinated Universal Time. It is used in: * the Canary Islands * Portugal (including Madeira but not the Azores) * Ireland * the United Kingdom * the British Crown dependencies * the Faroe Islands Western European Summer Time is known in the countries concerned as: * British Summer Time (BST) in the United Kingdom. * Irish Standard Time (IST) ( (ACÉ)) in Ireland. Also sometimes erroneously referred to as "Irish Summer Time" (). 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.〔 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. ==Usage== 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. * Spain * * Canary Islands, regularly since 1980 (rest of Spain is CEST, i.e. UTC+2) * Kingdom of Denmark * * Faroe Islands, regularly since 1981 * Ireland * * 1916–1939 summers IST * * 1940–1946 all year IST * * 1947–1968 summers IST * * 1968–1971 all year IST * * 1972– summers IST * Portugal * * Continental Portugal * * * 1916–1921 summers WEST * * * 1924 summer WEST * * * 1926–1929 summers WEST * * * 1931–1932 summers WEST * * * 1934–1941 summers WEST * * * 1942–1945 summers WEST (1942–1945 midsummers WEMT〔(【引用サイトリンク】url=http://www.timeanddate.com/time/zone/portugal/lisbon )〕=WEST+1) * * * 1946–1966 summers WEST * * * 1966–1976 all year WEST/CET * * * 1977–1992 summers WEST * * * 1992–1996 winters WEST/CET (1993–1995 summers CEST) * * * 1996– summers WEST * * Madeira, regularly since 1982 * The United Kingdom * * 1916–1939 summers BST * * 1940–1945 all year BST (1941–1945 summers BDST=BST+1) * * 1946 summer BST * * 1947 summer BST (1947 midsummer BDST=BST+1) * * 1948–1968 summers BST * * 1968–1971 all year BST * * 1972– summers BST 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Western European Summer Time」の詳細全文を読む スポンサード リンク
|