Constitution Day is an American federal observance that recognizes the ratification of the United States Constitution. It is observed on September 17, the day the members of the U.S. Constitutional Convention signed the Constitution in 1787.
Senator Robert C. Byrd of West Virginia passed a law designating September 17th as Constitution Day. Schools and federal agencies are required to hold educational programs about the Constitution on Constitution Day. Public Law 108-477 contained in the Consolidated Appropriations Act of 2005 states that "each educational institution that receives Federal funds for a fiscal year shall hold an educational program on the United States Constitution on September 17 of such year for the students served by the educational institution."