It was a Saturday.
13th September 1962 was a Thursday.
September 13th 1961 was a Wednesday.
September 13th, 1987, was a Sunday.
September 13th, 1981 fell on a Sunday.
September 13th, 1971 fell on a Monday.
September 13th of 1983 fell on a Tuesday.
September 21st, 1930 fell on a Sunday.
Sunday.
It was a Thursday.
Tuesday
Wednesday
September 13th, 1965 fell on a Monday.