September 21, 2007 - International Day of Peace
"The International Day of Peace was established in 1981 by the United Nations as an annual observance of global non-violence and ceasefire. Every year, people in all parts of the world honour peace in various ways on 21 September.
This year, UN Secretary-General Ban Ki-moon will ring the Peace Bell at United Nations Headquarters in New York in the company of the UN Messengers of Peace. He has called for a 24-hour cessation of hostilities on 21 September, and for a minute of silence to be observed around the world at noon local time."