Today, November 11th, Canada celebrates Rememberance Day, like the rest of the Commonwealth countries, which recalls the end of World War I, on this day, in 1918.
Rememberance Day is observed across Canada, most notably, by a moment of silence at exactly 11:00 am.
The holiday specifically commemorates World War I and World War II, the Korean War, and all conflicts since then in which Canada participated.
With sources from Wikipedia.