Saturday.
June 21, 2005 was a Tuesday.
March 21 2005 was a Monday.
August 21, 2005 fell on a Sunday.
November 21, 2005 fell on a Monday.
it was a Wednesday
July 21st, 2005, was a Thursday.
May 21, 1949 was a Saturday.
May 21 1927 was a Saturday.
May 21 1970 was a Thursday.
May 21 2010 was a Friday.
May 21, 1975, was a Wednesday.
May 21, 1914 was a Thursday.