May 21 Plato (Aristocles) born in Athens(?), 427BC May 21 DEC announces PDP-8, 1965 May 21 Battle of Iquique in Chile May 21 US explodes first hydrogen bomb, 1956 May 21* Memorial Day in Michigan (3rd Monday) May 21* Adelaide Cup (SA) May 21 Bonne fęte aux Constantin ! May 21 Konstantin May 21 May 21 May 21 May 21 May 21* May 21* May 21 May 21 May 21 May 22 Ethernet first described, 1973 May 22 US Civil War ends, 1865 May 22 National Heroes Day in Sri Lanka May 22 Richard Wagner is born in Leipzig, Germany, 1813 May 22 Fire in the store "L'inno", 325 deaths, 1967 May 22 Aujourd'hui, c'est la St(e) Émile. May 22 Beau temps ŕ la sainte Émilie Donne du fruit ŕ la folie. May 22 Richard Wagner in Leipzig geboren, 1813 May 22 Júlia, Rita May 22 May 22 May 22 May 22 May 22*