Flag Day is a significant holiday in the United States of America that celebrates the adoption of the U.S. flag, which occurred on June 14, 1777, by the resolution of the Second Continental Congress. This day is a tribute to the Stars and Stripes and all it represents - independence, unity, and enduring freedom. While it is not a federal holiday, it is a state holiday in Pennsylvania.

The original concept for observing Flag Day came about in the late 19th century. In June 1886, Bernard J. Cigrand, a 19-year-old school teacher from Wisconsin, reportedly initiated the idea for an annual flag day to be celebrated across the country. The concept gradually gained traction and eventually led to President Woodrow Wilson issuing a proclamation in 1916 declaring June 14 as Flag Day.

Recognized by Pennsylvania as a legal holiday, Flag Day holds a special place in the hearts of the state's residents. Pennsylvania's connection to this important day is profound as it was in Philadelphia where the United States' flag was officially adopted. Every year, the state organizes a series of parades, educational events, and festivals to commemorate this historic event. Many observe by flying the American flag on their homes and local businesses.