Veterans Day 11/11/11
The Christian Science Monitor provides the history of November 11 as Veterans Day. An excerpt:
American troops made significant headway in 1918, rebuffing a German offensive along the western front and moving Allied forces deeper into enemy territory. By November, Germany had had enough. It agreed to a cease-fire, signing the official armistice at 5 a.m. on November 11. The treaty took effect six hours later. On the "eleventh hour of the eleventh day of the eleventh month," as the saying goes, the world knew peace once again.