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2011 (MMXI) was a year of the Gregorian Calendar that started on a Saturday.
Timeline:
38 episodes premiered this year.
- January 3 - SpongeBob is picked up for a 9th season.
- January 15 - New Fish in Town and Big Sister Sam premiered, after their premieres on November 27, 2010 canceled.
- January 28 - The Legends of Bikini Bottom begin premiering.
The Monster Who Came to Bikini Bottom, Welcome to the Bikini Bottom Triangle, The Main Drain & Sponge-Cano premiered.
- January 29 - Trench-Billies premiered. The Legends of Bikini Bottom stop premiering (count out The Curse of the Hex , which aired in June ).
- February 12 - Tunnel of Glove and Love That Squid premiered, after their premieres on November 27, 2010 canceled.
- February 26 - Perfect Chemistry premiered.
- March 26 - Oral Report and A Friendly Game premiered.
- April 2 - Sentimental Sponge premiered.
- June 4 - Squidward's School for Grown Ups premiered.
- June 11 - The Curse of the Hex premiered.
- June 18 - The Hot Shot premiered.
- June 25 - The Other Patty premiered.
- July 15 -Frozen Face Off premiered.
- July 18 - Accidents Will Happen premiered.
- July 19 - Drive Thru premiered.
- July 20 - Sweet and Sour Squidward premiered.
- July 21 - The Googly Artiste premiered.
- September 16 - Barnacle Face and Pet Sitter Pat premiered.
- September 23 - Mermaid Man Begins and Plankton's Good Eye premiered.
- September 30 - House Sittin' for Sandy and Smoothe Jazz at Bikini Bottom premiered.
- October 21 - Ghoul Fools premiered.
- November 7 - Walking the Plankton premiered.
- November 8 - Patrick's Staycation premiered.
- November 9 - Mr. Krabs Takes A Vacation premiered.
- November 10 - Mooncation premiered.
- November 11 - Armistice Day, A SquarePants Family Vacation premiered.
- November 25 - The Way of the Sponge, Bubble Troubles, The Krabby Patty That Ate Bikini Bottom & Bubble Buddy Returns premiered.