Common British, Canadian and ANZAC traditions include two minutes' silence at the eleventh hour of the eleventh day of the eleventh month (the time that the armistice became effective), and wearing artificial poppies sold to raise funds for veterans' groups (the Earl Haig Fund in Britain or the Royal Canadian Legion in Canada).
In Britain, although two minutes' silence is often observed on the correct day, the main observance is on the Sunday nearest 11 November, Remembrance Sunday, when ceremonies are held at local communities' War Memorials, usually organized by local branches of the Royal British Legion--an association for ex-serviceman.
In Canada the day is a holiday for employees of the federal government. However, for private business, provincial governments and schools, its status varies by province. In some provinces it is a general holiday, but not in all.
Veterans Day is celebrated in the United States on the same date, but the function of the observance elsewhere is more closely matched in the US by Memorial Day. In the United States and some other allied nations this was formerly known as Armistice Day; in the USA it was given its new name after the end of World War II.
See In Flanders Fields.