On June 14, 1777 the United States Flag was adopted by the Second Continental Congress. It is not an official Federal holiday. However, many states and cities hold a Flag Day parade.
The 50 stars on the flag represent the 50 states of the United States of America and the 13 stripes represent the first thirteen colonies that declared independence from the Kingdom of Britain and became the first states in the Union. Nicknames for the flag include the "Stars and Stripes", "Old Glory" and " The Star Spangled Banner."
The flag is usually flown all year-round at most public buildings, like schools and banks, and it is not unusual to find private houses flying full-size (3' x 5') flags. Some private citizens display the flag year-round, but it becomes a widespread practice on civic holidays like Memorial Day, The Flag Day, Independence Day, The President's Day, and Veteran's Day.