Sunday
January 1 1979 was on a Monday.
October 1 1979 was on a Monday.
September 1 1979 was a Saturday.
September 1 1979 was on a Saturday.
Thursday.
Friday
Wednesday
April 1 1967 was a Saturday.
April 1 1977 was on a Friday.
April 1 1948 was a Thursday.
April 1 1969 was a Tuesday.
April 1 1959 was a Wednesday.