Tuesday.
March 12, 1959 was a Thursday.
January 12 1959 was a Monday.
October 12, 1959 fell on a Monday.
Saturday
Thursday was the day of the week of May 12, 1983
12 May 1961 was a Friday.
12 May 1997 was a Monday.
12 May 1898 was a Thursday.
May 12, 1965, was a Wednesday.
May 12 2012 is a Saturday.
12 May 1963 was a Sunday.
May 12 2011 will be a Thursday.