International Jazz Day is an International Day declared by the United Nations Educational, Scientific and Cultural Organization (UNESCO) in 2011 "to highlight jazz and its diplomatic role of uniting people in all corners of the globe." It is celebrated annually on April 30. The idea came from jazz pianist and UNESCO Goodwill Ambassador Herbie Hancock. Jazz Day is chaired by Hancock and the UNESCO Director-General. The celebration is recognized on the calendars of both UNESCO and the United Nations.

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