<P> So Czechoslovakia used summer time yearly from 1979 and both Czech Republic and Slovakia continued in doing so after the dissolution in 1993 . </P> <P> Czech lands and Slovakia used summer time in 1916, 1917 and 1918 under the Austro - Hungarian Empire during World War I . </P> <P> Protectorate of Bohemia and Moravia used summer time since 1940 . In 1940 / 1941 and 1941 / 1942, the summer time was kept continuously even during the winter . The Slovak State during World War II also used summer time . </P> <P> Czechoslovakia continued to use the summer time since 1945 to 1949 . In winter 1946 / 1947 (from 1 December to 23 February), also winter time (CET − 01: 00) was used . </P>

When does daylight saving time end in europe