September 23 is the 266th day of the year (267th in leap years). There are 99 days remaining.
- 1940 – Johnny Weissmuller Jr. is born.
- 1956 – Peter David is born.
- 1975 – Christopher Miller is born.
- 1980 – Star Wars (1977) 42 published.
- 1982 – Gene Day dies.
- 1987 – Joe Kennard is born.
- 1998 – Tales of the Jedi – Redemption 3 published.
- 2004 – Star Wars Insider 78 released for subscribers.
- 2008 – Star Wars Insider 104 published.
- 2011 – "Prisoners" airs on Cartoon Network.
- 2015 – Kanan 6 published.
- 2018 – Gary Kurtz dies.
- 2020 – Bounty Hunters 5 published.