Veterans Day happens each year on Nov. 11. The federal holiday traces back to the end of World War I. An armistice between the Allied nations and Germany began officially on Nov. 11, 1918 — the eleventh hour of the eleventh day of the eleventh month, according to the U.S. Department of Veterans Affairs.

The Veterans Day holiday began more than a century ago, albeit under a different name, as a celebration of the end of World War I.