August 13, 1971 fell on a Friday.
December 13th, 1971 fell on a Monday.
September 13th, 1971 fell on a Monday.
13th August 1983 was a Saturday
13th, August, 1994, was a Saturday,
It was a Saturday.
November 13th 1971 was a Saturday.
August 13, 1996 was a Tuesday.
Tuesday
Friday
Friday
Saturday
Monday