Armistice Day (also known as ) is on 11th and commemorates the signed between the Allies of and Germany at Compiègne, France, for the cessation of hostilities on the Western Front, which took effect at eleven o'clock in the morning—the "eleventh hour of the eleventh day of the eleventh month" of 1918.

While this official date to mark the end of the war reflects the cease fire on the Western Front, hostilities continued in other regions, especially across the former and in parts of the old Ottoman Empire. The date was declared a national holiday in many allied nations, to commemorate those members of the armed forces who were killed during war. An exception is Italy, where the end of the war is commemorated on 4 November, the day of the Armistice of Villa Giusti.

After World War II, the name of the holiday was changed to in the United States and to Remembrance Day in countries of the British . remains an official holiday in France and , known also as the Day of Peace in the Flanders Fields.

In many parts of the world, people take a two minute moment of silence at 11:00 a.m. local time as a sign of respect for the roughly 60 million people who died in the war. This gesture of respect was suggested by in a letter to a British newspaper, although Wellesley Tudor Pole had established two ceremonial periods of remembrance based on events in 1917. From the outset, many veterans in many countries also utilised Silence to pay homage to departed comrades. The toast of "Fallen" or "Absent Comrades" has always been honoured in silence at New Zealand veteran functions, while the news of a member’s death has similarly been observed in silence at meetings.

Similar ceremonies developed in other countries during the inter-war period. In South Africa, for example, the Memorable Order of Tin Hats had by the late 1920s developed a ceremony whereby the toast of "Fallen Comrades" was observed not only in silence but darkness, all except for the "Light of Remembrance", with the ceremony ending with the Order’s anthem "Old Soldiers Never Die". In Australia, meanwhile, the South Australian State Branch of the Returned Sailors & Soldiers' Imperial League of Australia similarly developed during the a simple ceremony of silence for departed comrades at 9 p.m., presumably to coincide with the traditional 11 a.m. time for Armistice ceremonies taking place in Europe (due to the ten hour time difference between Eastern Australia and Europe).

In the United Kingdom, beginning in 1939, the two minute silence was moved to the Sunday nearest to 11th November in order not to interfere with wartime production should 11th November fall on a weekday. After the end of World War II, most Armistice Day events were moved to the nearest Sunday and began to commemorate both World Wars. The change was made in many Commonwealth countries, as well as the United Kingdom, and the new commemoration was named or Remembrance Day. Both Armistice Day and Remembrance Sunday are now commemorated formally in the UK.

More recently the two minutes silence has also been observed to remember those that have fallen in more recent conflicts in foreign countries.