The 1st of August 1981 was a Saturday.
Sunday
It was a Friday.
August 13th 1981 was a Thursday.
August 23, 1981, was a Sunday.
August 19, 1981 was on a Wednesday.
August 5, 1981 fell on a Wednesday.
August 24, 1981 fell on a Monday.
August 1, 1981 fell on a Saturday.
August 11, 1981 fell on a Tuesday.
August 7, 1981 fell on a Friday.
August 3, 1981 fell on a Monday.
It can fall on any day