In 1916, President Woodrow Wilson issued a proclamation that officially established June 14 as Flag Day. In August 1949, National Flag Day was officially established by an Act of Congress, but Flag Day is not an official federal holiday. It commemorates the adoption of the flag of the United States, which happened on June 14, 1777 by resolution of the Second Continental Congress.
The Pledge of allegiance was written for the children’s magazine Youth’s Companion by Christian Socialist author and Baptist minister Francis Bellamy on September 7, 1892.
In New York City on April 22, 1951, the Board of Directors of the Knights of Columbus adopted a resolution to amend their recitation of Pledge of Allegiance at the opening of each of the meetings of the 800 Fourth Degree Assemblies of the Knights of Columbus by addition of the words “under God” after the words “one nation.”
I pledge allegiance to the Flag of the United States of America, and to the Republic for which it stands, one Nation, under God, indivisible, with liberty and justice for all.