Armistice Day, later known as Remembrance Day in the Commonwealth and Veterans Day in the United States, is commemorated every year on 11 November to mark the armistice signed between the Allies of World War I and Germany at Compiègne, France, at 5:45 am for the cessation of hostilities on the Western Front of World War I, which took effect at 11:00 am—the "eleventh hour of the eleventh day of the eleventh month" of 1918—although, according to Thomas R. Gowenlock, an intelligence officer with the U.S. First Division, shelling from both sides continued for the rest of the day, ending only at nightfall. The armistice initially expired after a period of 36 days and had to be extended several times. A formal peace agreement was reached only when the Treaty of Versailles was signed the following year.
The date is a national holiday in France, and was declared a national holiday in many Allies of World War I nations, several of whom have since changed the name of the holiday from Armistice Day to either Remembrance Day in the Commonwealth of Nations, or Veterans Day in the United States. Italy celebrates the Armistice with Austria on November 4 as National Unity and Armed Forces Day. In Poland, November 11 coincides with National Independence Day.