The International Volunteer Day for Economic and Social Development, more commonly referred to as International Volunteer Day, is an international observance mandated by the UN General Assembly in 1985.
International Day of Persons with Disabilities is an international observance promoted by the United Nations since 1992. It has been observed with varying degrees of success around the planet.
World AIDS Day, designated on 1 December every year since 1988, is an international day dedicated to raising awareness of the AIDS pandemic caused by the spread of HIV infection and mourning those who have died of the disease.