September 23rd is the 266th day of the Gregorian calendar. Harvard College held its first commencement exercises; Pilot Earle Ovington delivered the first batch of official American airmail. Bob Marley appeared at his final concert in Pittsburgh, Pennsylvania. Famous birthdays include Augustus Caesar, Bruce Springsteen and John Coltrane.
We have 1 holiday listed for September 23.
| Date | Holiday | Category | Tags | Region |
|---|---|---|---|---|
| National Dogs in Politics Day | Animal | Dog, Historical, Weird National | U.S. |
