The United Nations International Day of Peace, September 21, provides an opportunity for all humanity to come together, in spirit and in action, for greater peace. This global day is observed by hundreds of millions of citizens in cities, towns and villages worldwide. Thousands of NGOs, as well as citizens and governments, organize and engage in diverse peace-related activities such as peace education, the arts, spirituality, the environment, social justice, community, sport, service, and more.