Each year on June 14th, we celebrate Flag Day, but do you know why?

The reason we celebrate Flag Day is simple- it's the day that marks the adoption of the flag of the United States which happened on June 14, 1777, thanks to a resolution of the Second Continental Congress.

Flag Day is also a special day for the United States Army because it's the day they celebrate their birthday. It was on June 14, 1775 that Congress adopted "the American continental army" on June 14, 1775.

Flag Day is not an official federal holiday, but it is nationally recognized. In 1916, President Woodrow Wilson issued a proclamation which officially established June 14th as Flag Day, but it wasn't until August 3rd, 1949 that President Truman signed an Act of Congress. That Act of Congress permanently designated June 14th of each year to be recognized as National Flag Day.

On June 14, 1777, John Adams spoke about the flag at a meeting of the Continental Congress in Philadelphia. He said, "Resolved, that the flag of the thirteen United States shall be thirteen stripes, alternate red and white; that the Union be thirteen stars, white on a blue field, representing a new constellation."

Believe it or not, there've been twenty-seven official versions of the flag so far. Stars have been added to it as states have entered the Union and the current version of the American flag dates to July 4, 1960, when Hawaii became the 50th state.