<P> In Britain, beginning in 1939, the two - minute silence was moved to the Sunday nearest to 11 November in order not to interfere with wartime production should 11 November fall on a weekday . </P> <P> After the end of World War II, most member states of the Commonwealth of Nations, like United Kingdom and (as Canada in 1931), moved most Armistice Day events to the nearest Sunday and officially began to commemorate both World Wars . They adopted the name Remembrance Day or Remembrance Sunday . </P> <P> Other countries also changed the name of the holiday just prior to or after World War II, to honor veterans of that and subsequent conflicts . The United States chose All Veterans Day, later shortened to' Veterans Day', to explicitly honor military veterans, including those participating in other conflicts . </P> <P> Both Armistice Day and Remembrance Sunday are commemorated formally . In recent years Armistice Day has become increasingly recognised, and many people now attend the 11: 00 a.m. ceremony at the Cenotaph in London--an event organised by Royal British Legion, a British charity dedicated to perpetuating the memory of those who served in the First World War and veterans of all subsequent wars involving British and Commonwealth troops . </P>

When did armistice day changed to veterans day