In the United States it is celebrated on the third Sunday in June

-June 21, 2009
-June 20, 2010
-June 19, 2011
-June 17, 2012

In Australia, Father's Day is celebrated on the First Sunday in September.
Father's Day in Canada, is celebrated on the third Sunday in June.
In the U.K. Father's Day is celebrated on the third Sunday in June..