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Hong Kong Summer Time

Summer Time in Hong Kong was first introduced in 1941.
Hong Kong Summer Time = Hong Kong Standard Time + 1 hour
The period in which Summer Time was enforced is listed below:

Year Period   Year Period
1941 15 Jun to 30 Sep 1961 19 Mar to 5 Nov
1942 Whole year 1962 18 Mar to 4 Nov
1943 Whole year 1963 24 Mar to 3 Nov
1944 Whole year 1964 22 Mar to 1 Nov
1945 Whole year 1965 18 Apr to 17 Oct
1946 20 Apr to 1 Dec 1966 17 Apr to 16 Oct
1947 13 Apr to 30 Nov 1967 16 Apr to 22 Oct
1948 2 May to 31 Oct 1968 21 Apr to 20 Oct
1949 3 Apr to 30 Oct 1969 20 Apr to 19 Oct
1950 2 Apr to 29 Oct 1970 19 Apr to 18 Oct
1951 1 Apr to 28 Oct 1971 18 Apr to 17 Oct
1952 6 Apr to 2 Nov 1972 16 Apr to 22 Oct
1953 5 Apr to 1 Nov 1973 22 Apr to 21 Oct
1954 21 Mar to 31 Oct 1973/74 30 Dec 73 to 20 Oct 74
1955 20 Mar to 6 Nov 1975 20 Apr to 19 Oct
1956 18 Mar to 4 Nov 1976 18 Apr to 17 Oct
1957 24 Mar to 3 Nov 1977 Nil
1958 23 Mar to 2 Nov 1978 Nil
1959 22 Mar to 1 Nov 1979 13 May to 21 Oct
1960 20 Mar to 6 Nov 1980 to Now Nil