It was a Thursday.
13th June 1955 was a Monday.
13th October 2012 is a Saturday.
Wednesday
13th October 1981 was a Tuesday.
13th October 1975 was a Monday.
October 13th, 1975 was a Monday.
June 13th 1955 was a Monday.
Monday, June 13, 1955
November 13th, 1955 fell on a Sunday.
October 13th, 1985 fell on a Sunday.
October 13th, 1954 fell on a Wednesday.
October 13th, 1956 fell on a Saturday.