1388 - Claudius Clavus, Danish geographer
1531 - Philipp Apianus, [Bennewitz/Bienewitz], German geography/cartographer
1752 - Britain (and American colonies) adopt Gregorian calendar (no Sept 3-Sept 13th)
1769 - Alexander von Humboldt, German naturalist and explorer (Kosmos), born in Berlin, Germany (d. 1859)
1959 - Soviet Union's Luna-2 is 1st spacecraft to land on the Moon
1960 - Iraq, Iran, Kuwait, Saudi-Arabia & Venezuela form Organization of Petroleum Exporting Countries (OPEC)
1974 - Charles Kowal discovers Leda, 13th satellite of Jupiter
