September 18 is the 261st day of the year. There are 104 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).
+ 1870 – Old Faithful Geyser is observed and named by Henry D. Washburn during the Washburn–Langford–Doane Expedition to Yellowstone.
+ 1927 – The Columbia Broadcasting System goes on the air.
+ 1947 – The United States Air Force becomes an independent branch of the United States Armed Forces.
( Births )
+ 1933 – Robert Blake, American actor, producer, and screenwriter
+ 1940 – Frankie Avalon, American singer and actor
+ 1952 – Rick Pitino, American basketball player and coach
+ 1954 – Tommy Tuberville, American football player and coach
+ 1959 – Ryne Sandberg, American baseball player, coach, and manager