May 13th 1999 was a Thursday.
December 13 1999 was on a Monday.
March 13 1999 was a Saturday.
On January 13 1999 it was a Wednesday
August 13 1999 was a Friday.
October 13, 1999 fell on a Wednesday.
August 13, 1999 fell on a Friday.
13 June 1999 was a Sunday.
Tuesday
Tuesday
Monday
13th January 1999, was a Wednesday.
September 13th, 1999 fell on a Monday.