Adding to the confusion is that George Washington's birthday was actually on February 11 of the Julian calendar, in use before England's calendar reformation in September 1752. His birthday is equivalent to February 22 in the Gregorian calendar used since 1752. Washington himself considered the 22nd his birthday later in life. The third Monday in a month always falls between the 15th and the 21st, so the official holiday now never occurs on the 11th, the 22nd, nor on Lincoln's birthday.
In American schools the days leading up to the holiday are often used to educate students on the history of the Presidents of the United States, especially Washington and Lincoln. In recent years Presidents' Day has become well-known for being a day in which many stores hold sales.
"Washington's Birthday" is the designated holiday in section 6103(a) of title 5 of the United States Code, which is the law that specifies holidays for Federal employees.