1965 – 1976
December 21 1969 – March 20 1970
March 21 – June 20 1970
June 21 – September 20 1970
September 21 – December 20 1970
December 21 1970 – March 20 1971
March 21 – September 20 1971
September 21 – December 20 1971
December 21 1971 – March 20 1972
1972
March 21 – June 20 1972
June 21 – September 20 1972
September 21 – December 20 1972
December 21 1972 – March 20 1973
1973
March 21 – June 20 1973
June 21 – September 20 1973
September 21 – December 20 1973
December 21 1973 – March 20 1974
1974
March 21 – June 20 1974
June 21 – September 20 1974
September 21 – December 20 1974
December 21 1974 – March 20 1975
1975
March 21 – June 20 1975
June 21 – September 20 1975
September 21 – December 20 1975
December 21 1975 – March 20 1976
1976
March 21 – June 20 1976
June 21 – September 20 1976
September 21 – December 20 1976