The International Day of Peace occurs annually on September 21. It is dedicated to peace, or specifically the absence of war. The first year this holiday was celebrated was 1981. To inaugurate the day, the "Peace Bell" is rung at UN Headquarters. The bell is cast from coins donated by children from all continents. It was given as a gift by the Diet of Japan, and is referred to as "a reminder of the human cost of war." The inscription on its side reads: "Long live absolute world peace."