March 18 is the 77th day of the year (78th in leap years). There are 288 days remaining.
- 1931 – John Mollo is born.
- 1978 – Leigh Brackett dies.
- 1998 – Crimson Empire 4 published.
- 2004 – "Manifesto My Foot" published.
- 2004 – "Only a Master of Evil" published.
- 2009 – Knights of the Old Republic 39: Dueling Ambitions, Part 1 published.
- 2015 – Princess Leia, Part II released.
- 2017 – Twin Suns airs on Disney XD.