Flag Day celebrates the American flag and everything it represents. The flag is an important symbol of the American way of life representing freedom and happiness for all citizens. June 14th is the anniversary of the adoption of the first American flag in 1777, which had 13 stars and 13 stripes to represent the states at the time. Over time, the number of stars has increased with the number of states to 50. Today Flag Day celebrates the United States with events such as flag raising ceremonies and parades.