21st July 2010 is a Wednesday.
This depends on the year. July 21st has occurred on every day of the week.
July 1, 2010, is a Thursday.
July 2, 2010 - Tuesday. July 2, 2010 - Tuesday.
A Thursday
21st July 1970 was a Tuesday.
21st July 1969 was a Monday.
July 21st, 1977 fell on a Thursday.
July 21st, 1959 fell on a Tuesday.
July 21st, 2001 fell on a Saturday.
January 21st 2010 is a Thursday.
21st January 2004 fall on a Wednesday.
August 21st 1996 was a Wednesday.