Thursday
March 15 1971 was a Monday.
October 15 1971 was a Friday.
June 15 1971 was a Tuesday.
September 15, 1971 was a Wednesday.
It was a Saturday.
15 April 1912 was a Monday.
15 April 2000 was a Saturday.
15 April 1978 was a Saturday.
15 April 1980 was a Tuesday.
15 April 2006 was a Saturday.
15 April 1959 was a Wednesday.
April 15 1917 was a Sunday.