When was Black Sabbath formed?
1968
1970
1968
1970
1968
1970
1968
1970
1968
1970
1968
1970
1967
1968
1969
1970
1967
1968
1972
1969
1970
1967
1968
1972
1969
1970
1967
1968
1972
1973
1969
1970
1967
1968
1972
1973
1969
1964
1970
1967
1968
1972
1973
1969
1960
6 June 1970
1964
1970
1967
1968
1972
1973
1969
1960
6 May 1970
6 April 1970
1964
1955
6 November 1970
6 June 1968
1970
1967
1968
1972
1973
1965
1975
1969
1960
6 May 1968
6 June 1969
1964
1955
1970
1967
6 September 1970
1968
1972
6 January 1970
1973
1965
6 November 1968
1975
1969
1960
1964
1955
1970
1967
1968
1971
1972
1973
1965
1975
1969
1960
6 June 1969
1964
1955
6 June 1968
1970
1967
1968
1971
6 June 1970
1972
6 May 1968
1973
1963
1965
1975
6 May 1969
1969
1960
6 May 1970
6 April 1970
1964
1955
1970
1967
1968
1971
1972
1974
1973
1963
6 April 1968
1965
6 November 1968
6 January 1968
1975
1969
1960
1964
1955
1970
1957
1967
1968
1971
1972
1948
1974
6 June 1969
1973
1963
1965
5 Years After
1975
6 May 1969
1969
1960
1964
1955
1970
1957
6 May 1970
1967
1968
1971
6 June 1970
1972
6 May 1974
1948
1974
1973
1963
6 April 1970
1965
7 Years After
6 June 1967
6 May 1967
1975
6 May 1973
1969
1960
6 April 1969
1964
1955
1970
1957
1967
1968
1971
1972
1966
1948
1974
1973
1963
1965
1975
1960
7 Years After
6 May 1974
6 May 1968
6 May 1972
6 May 1964
4 September 1969
4 June 1969