French Revolution: François Hanriot, leader of the Parisian National Guard, arrests 22 Girondists selected by Jean-Paul Marat, setting the stage for the Reign of Terror.
Napoleonic Wars: A Franco-Spanish fleet recaptures Diamond Rock, an uninhabited island at the entrance to the bay leading to Fort-de-France, from the British.
In Denver, Timothy McVeigh is convicted on 15 counts of murder and conspiracy for his role in the 1995 bombing of the Alfred P. Murrah Federal Building in Oklahoma City, in which 168 people died. He was executed four years later.
Europe launches its first voyage to another planet, Mars. The European Space Agency's Mars Express probe launches from the Baikonur space center in Kazakhstan.