Flag Day was first observed in 1877 on the 100th anniversary of the Continental Congress' adoption of the Stars and Stripes as the official flag of the United States. In that year, Congress asked that all public buildings fly the flag on June 14.
In 1916, President Woodrow Wilson proclaimed Flag Day as a national celebration. However, the holiday was not officially recognized until 1949 when President Harry Truman signed the National Flag Day Bill.
In 1916, President Woodrow Wilson proclaimed Flag Day as a national celebration. However, the holiday was not officially recognized until 1949 when President Harry Truman signed the National Flag Day Bill.