It was a Monday.
May 12 1958 was a Monday.
May 12, 1958 fell on a Monday.
December 12 1958 was a Friday.
November 12 1958 was a Wednesday.
September 12, 1958, was a Friday.
January 12, 1958, was a Sunday.
August 12, 1958 fell on a Tuesday.
Friday.
October 12 1958 was a Sunday.
12 April 1958 was a Saturday.
Thursday was the day of the week of May 12, 1983
12 May 1961 was a Friday.