Veterans Day is an official United States holiday that honors people who have served in armed service, also known as veterans. It is a federal holiday that is observed on November 11. It coincides with other holidays such as Armistice Day and Remembrance Day, which are celebrated in other parts of the world and also mark the anniversary of the end of World War I. (Major hostilities of World War I were formally ended at the 11th hour of the 11th day of the 11th month of 1918, when the Armistice with Germany went into effect.)