Serfs Emancipation Day in Tibet
1802 – German astronomer Heinrich Wilhelm Matthias Olbers discovered 2 Pallas, the second asteroid known to man.
1862 – American Civil War: An invasion of the New Mexico Territory by the Confederate States Army was halted at the Battle of Glorieta Pass.
1910 – Near Martigues, France, French aviator Henri Fabre's Fabre Hydravion (pictured) became the first seaplane to take off from water under its own power.
2003 – Invasion of Iraq: In a friendly fire incident, two members of the United States Air Force attacked the United Kingdom's Blues and Royals regiment, killing one soldier and injuring five.