September 21st is the International Day of Peace (sometimes called World Peace Day). Held every year on this date, it is dedicated to peace, and more precisely the absence of war and violence. It can be marked by a temporary ceasefire in a combat zone for humanitarian aid access.
First celebrated in 1982, the day is kept by many nations, political groups, military groups, and peoples. The day is started with the ringing of the “Peace Bell” at UN Headquarters (in New York City).
This year, 2012, the International Day of Peace will see special activities and celebrations take place all across the world over the 2012 Peace Day Weekend. Festivals, concerts, a global Peace Wave and moments of silence at noon will mark the day in every time zone, and much more.
Find out about events local to you here: http://www.internationaldayofpeace.org/