Historical Events on May 23

27 significant historical events occurred on May 23. May 23 has been the date of many memorable events over the years. Key incidents include the 1951 Seventeen Point Agreement between China and the Dalai Lama, the 1969 Vienna Convention on the Law of Treaties, and several major sporting events like the Formula One races at Monaco in 1971 and 1993 and the 1990 European Cup Final.