screenwriter (b. 1937) 2015 – Alexander Dalgarno, English physicist and academic (b. 1928) 2015 – Ivan Doig, American journalist and author (b. 1939) 2015 – Tsien Tsuen-hsuin, Chinese-American academic (b. 1909) 2016 – Duane Clarridge, American spy (b. 1932) 2016 – Will Smith, American football player (b. 1981) 2017 – John Clarke, New Zealand-Australian comedian, writer, and satirist (b. 1948) 2019 – Charles Van Doren, American writer and editor (b. 1926) 2021 – Prince Philip, Duke of Edinburgh (b. 1921) 2021 – DMX, American rapper and actor (b. 1970) 2021 – Nikki Grahame, British reality-TV icon (b. 1982) 2021 – Ian Gibson, British scientist and Labour Party politician (b. 1938) 2021 – Ramsey Clark, American lawyer (b. 1927) 2022 – Dwayne Haskins, American football player (b. 1997) Holidays and observances Christian feast day: Dietrich Bonhoeffer (Anglicanism, Lutheranism) Gaucherius Materiana Waltrude April 9 (Eastern Orthodox liturgics) Anniversary of the German Invasion of Denmark (Denmark) Baghdad Liberation Day (Iraqi Kurdistan) Constitution Day (Kosovo) Day of National Unity (Georgia) Day of the Finnish Language (Finland) Day of Valor or Araw ng Kagitingan (Philippines) Feast of the Second Day of the Writing of the Book of the Law (Thelema) Martyr's Day (Tunisia) National Former Prisoner of War Recognition Day (United States) Remembrance for Haakon Sigurdsson (The Troth) Vimy Ridge Day (Canada) References External links BBC: On This Day Historical Events on April 9 Days of the year April