1984 (MCMLXXXIV) was a leap year starting on Sunday. Date Event(s) June 26 Birth of Aubrey Plaza, the voice of Nocturna. September 27 Birth of Avril Lavigne. November 22 Birth of Scarlett Johansson, the voice of Princess Mindy. December 30 Birth of LeBron James, guest star in "Truth or Square." Retrieved from "https://spongebob.fandom.com/wiki/Timeline:1984?oldid=3140629" Category: Years Community content is available under CC-BY-SA unless otherwise noted.