On September 23 Checkers Day is held. This september event in the third decade of the month is annual.
Checkers Day is commemorates the famous ‘checkers‘ speech made by Richard M. Nixon in 1952 after he received an adorable Cocker Spaniel as he sought election in 1952.
Hobbit Day on September 22 (the containing week is celebrated as Tolkien Week. American Tolkien Society);
World Day Against Software Patents on September 24 (Brussels, 2nd September 2008 — A global coalition of more than 80 software companies, associations and developers has declared the 24th of September to be the “World Day Against Software Patents”);
Johnny Appleseed Day on September 26 (What many people don’t know is that Johnny Appleseed was no mere legend, but was, in fact, a missionary known by the name of John Chapman. Born in Leominster, Massachusetts in 1774)