August 13 1999 was a Friday.
Sunday
It can fall on any day
August 1 1999 was a Sunday.
August 23 1999 was a Monday.
August 20, 1999 was a Friday.
August 11, 1999 fell on a Wednesday.
August 13, 1999 fell on a Friday.
August 4, 2012 will fall on a Saturday.
August 1, 2015 will fall on a Saturday.
Friday
Tuesday
Wednesday