The United Nations International Day of Peace is observed annually on September 21 to honor a cessation of hostilities and promote peace. In 2015, over 35 chapters of the Universal Peace Federation celebrated in at least 11 regions and 35 countries with events such as peace walks, interfaith ceremonies, and appointing new Ambassadors for Peace. Celebrations involved thousands of participants, including students, educators, religious and community leaders who discussed topics like conflict resolution, interfaith harmony, and building a more peaceful world.