Wednesday.
Saturday
It was a Thursday.
13th August 1983 was a Saturday
13th, August, 1994, was a Saturday,
January 13th 1947 was a Monday.
May 13, 1947 fell on a Tuesday.
December 13th, 1947 fell on a Saturday.
August 13, 1996 was a Tuesday.
7 August 1947 was a Thursday.
15 August 1947 was a Friday.
August 15 1947 was a Friday.
August 20 1947 was a Wednesday.