“The United Nations is needed more than ever at this time of multiple crises. […] At this critical moment, let us reaffirm our commitment to empowering the marginalized and vulnerable. On United Nations Day, I call on Governments and individuals to work in common cause for the common good. ”
Secretary-General Ban Ki-moon
UN Day marks the anniversary of the entry into force in 1945 of the UN Charter. With the ratification of this founding document by the majority of its signatories, including the five permanent members of the Security Council, the United Nations officially came into being.
24 October has been celebrated as United Nations Day since 1948. In 1971, the United Nations General Assembly recommended that the day be observed by Member States as a public holiday.
For more information: http://www.un.org/en/events/unday/