31 May

1942 Jo Vonlanthen born 1953 Louis Rosier won the non-championship Albi Grand Prix 1953 Toulo De Graffenried won the non-championship Eifelrennen 1954 Bill Vukovich won the Indianapolis 500 1959 Andrea De Cesaris born 1959 Jo Bonnier won the Dutch Grand Prix 1981 Gilles Villeneuve won the Monaco Grand Prix 1987 Ayrton Senna won the Monaco Grand Prix 1992 Ayrton Senna won the Monaco Grand Prix