United Nations celebrates International Day of Peace to promote unity - ABCNews7 (New York)
September 21 is International Day of Peace, which originated in 1989 by the United Nations (UN) General Assembly. A few decades later, the General Assembly declared to make the day a "period of non-violence and cease-fire." ... To commemorate the day, a #PeaceDayChallenge was created by the U.S. Institute of Peace to bring people together not just to observe the day, but to take action.