The International Day of Peace, also officially known as World Peace Day, is a United Nations-sanctioned holiday observed annually on 21 September.
To inaugurate the day, the United Nations Peace Bell is rung at UN Headquarters (in New York City). The bell is cast from coins donated by children from all continents except Africa, and was a gift from the United Nations Association of Japan, as “a reminder of the human cost of war”; the inscription on its side reads, “Long live absolute world peace”.