October 31 is the 304th day of the year (305th in leap years) in the Gregorian calendar. There are 61 days remaining. It is the date of Halloween.
- Halloween is celebrated in Bikini Bottom.
- This is the date in which Spongezilla Attacks!, "Scaredy Pants" and "The Legend of Boo-Kini Bottom" takes place.
- 1945: Brian Doyle-Murray, the voice of the Flying Dutchman, was born.
- 1970: Nolan North was born.
- 1999: The earliest possible date of "Scaredy Pants"
- 2000: "Scaredy Pants" and "I Was a Teenage Gary" premiered in Latin America.
- 2001: The latest possible date of "Scaredy Pants"
- 2002: Nickelodeon Party Blast was released on Windows in North America.
- 2003: Battle for Bikini Bottom was released.
- 2006: Whale of a Birthday DVD was released.
- 2008: SpongeBob SquarePants featuring Nicktoons: Globs of Doom was released in Europe.
- 2011: Fang In There! was released.
- 2014: "Don't Look Now" and "Séance Shméance" premiered in Germany and Poland.
- 2015: "Ditchin'" premiered in Wales (UK); "Safe Deposit Krabs" and "Plankton's Pet" premiered in the Philippines.
- 2017: "The Legend of Boo-Kini Bottom" premiered in France, Iberia, Latin America, and Sweden.
- 2018: "A SquarePants Family Vacation" premiered in Finland.
- 2019: "The Ghost of Plankton" and "My Two Krabses" premiered in Italy, France, Greece, and Wallonia.
- October 31 on Wikipedia
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