October 30 is the 303rd day of the year There are 62 days remaining until the end of the year. This date is slightly more likely to fall on a Tuesday, Friday or Sunday (58 in 400 years each) than on Wednesday or Thursday (57), and slightly less likely to occur on a Monday or Saturday (56).
+ 1864 – Helena, Montana is founded after four prospectors discover gold at "Last Chance Gulch".
+ 1938 – Orson Welles broadcasts his radio play of H. G. Wells's The War of the Worlds, causing anxiety in some of the audience in the United States.
+ 1945 – Jackie Robinson of the Kansas City Monarchs signs a contract for the Brooklyn Dodgers to break the baseball color line.
+ 1985 – Space Shuttle Challenger lifts off for mission STS-61-A, its final successful mission.
( Births )
+ 1735 – John Adams, American lawyer and politician, 2nd President of the United States (d. 1826)
+ 1945 – Henry Winkler, American actor, comedian, director, and producer