2015 Event Barack Obama becomes the first U.S. president to address the African Union, which includes 54 nations as members; the president emphasized the importance of growing economies, reducing corruption, increasing education, and instituting democracy 1930 Birthday Dorothy Tutin, born in London, actress, Importance of Being Ernest, Cromwell 1915 Birthday Michael Denison, York England, actor, Importance of Being Ernest 1895 Event Oscar Wilde's "Importance of Being Earnest," opens in London