October 21 is the 294th day of the year (295th in leap years) in the Gregorian calendar. There are 71 days remaining.
- 1946: Lux Interior, the singer of Underwater Sun
- 2003: Battle for Bikini Bottom was released.
- 2004: Nicktoons Movin' was released.
- 2011: Ghoul Fools premiered.
- 2012: "Move It or Lose It" and "Chum Fricassee" aired.
- October 21 on Wikipedia