| Date
| Event(s)
|
| January 9
| Season 4 Volume 2 was released.
|
| January 15
| "The Thing" and "Hocus Pocus" premiered.
|
| February 19
| "Driven to Tears," "Rule of Dumb," "The Pink Purloiner," "The Gift of Gum," "Rise and Shine," "Waiting," and "Sing a Song of Patrick" premiered.
"New Leaf" and "Once Bitten" premiered in Norway.
|
| February 20
| "Bummer Vacation" and "Wigstruck" premiered in Norway.
|
| February 21
| "Squidtastic Voyage" and "That's No Lady" premiered in Norway.
|
| February 23
| "The Thing" and "Hocus Pocus" premiered in Norway.
|
| March 13
| Nick Picks Volume 5 was released.
|
| March 15
| Nicktoons: Battle for Volcano Island and Creature from the Krusty Krab were released in Japan.
|
| March 21
| "New Leaf" and "Once Bitten" premiered in Canada.
|
| March 28
| "Bummer Vacation" and "Wigstruck" premiered in Canada.
|
| March 31
| "Born to Be Wild" and "Best Frenemies" premiered.
|
| April 1
| The series switched to a TV-Y7 rating.
|
| April 5
| Remodeling premiered.
|
| April 11
| "Squidtastic Voyage" and "That's No Lady" premiered in Canada.
|
| April 12
| Can't Swim premiered.
|
| April 13
| "Friend or Foe" premiered.
|
| April 15
| "Have You Seen This Snail?" premiered in the UK and Ireland.
|
| April 17
| Friend or Foe? was released.
|
| April 18
| "The Thing" and "Hocus Pocus" premiered in Canada.
|
| April 24
| Yo-Ho-Ha-Ha-Ha!: A Pirate Joke Book and Hooray for Dads! were released.
|
| April 25
| Encyclopedia SpongeBobia was created.
"Driven to Tears" and "Rule of Dumb" premiered in Canada.
|
| April 28
| "Born to Be Wild" and "Best Frenemies" premiered in Canada.
|
| May 1
| The SpongeBob SquarePants series became 8 years old.
|
| May 2
| "The Pink Purloiner" and "Squid Wood" premiered in Canada.
|
| May 9
| "Best Day Ever" premiered in Canada.
|
| May 14
| "Friend or Foe" premiered in Latin America.
|
| May 17
| "Rise and Shine," "Waiting," and "Fungus Among Us" premiered in Germany.
|
| May 21
| TV premiere of The SpongeBob SquarePants Movie on YTV in Canada.
"Spy Buddies," "Boat Smarts," and "Good Ol' Whatshisname" premiered in Germany.
|
| May 25
| Nicktoons: Battle for Volcano Island was released in Europe.
Charles Nelson Reilly died.
|
| May 28
| Beach Bob was released.
|
| May 29
| Mistaken Identity was released.
|
| May 31
| "New Digs" and "Krabs à la Mode" premiered in Germany.
|
| June 5
| Bikini Bottom Adventures was released.
|
| June 7
| Nicktoons: Battle for Volcano Island was released in Australia.
"To Love a Patty" and "Breath of Fresh Squidward" premiered in Germany.
|
| June 14
| "Money Talks," "SpongeBob vs. the Patty Gadget," and "Slimy Dancing" premiered in Germany.
|
| June 21
| "The Thing" and "Hocus Pocus" premiered in Germany.
|
| June 28
| "The Krusty Sponge" and "Sing a Song of Patrick" premiered in Germany.
|
| July 23
| "Spy Buddies," "Boat Smarts," and "Good Ol' Whatshisname" premiered.
|
| July 24
| "The Krusty Sponge" and "Squid Wood" premiered.
Behold, No Cavities! was released.
|
| July 25
| "New Digs" and "Krabs à la Mode" premiered.
|
| July 26
| "To Love a Patty" and "Breath of Fresh Squidward" premiered.
|
| July 27
| "Roller Cowards" and "Bucket Sweet Bucket" premiered.
|
| July 30
| "The Original Fry Cook" and "Night Light" premiered.
|
| July 31
| "Money Talks," "SpongeBob vs. The Patty Gadget," and "Slimy Dancing" premiered.
|
| August 1
| "A Flea in Her Dome," "The Donut of Shame," and "The Krusty Plate" premiered.
|
| August 2
| "Picture Day," "Pat No Pay," and "BlackJack" premiered.
|
| August 3
| "Blackened Sponge" and "Mermaid Man vs. SpongeBob" premiered.
|
| August 7
| Scared Silly! was released.
|
| August 31
| "Driven to Tears" and "Rule of Dumb" premiered in Norway.
|
| September 4
| Season 5 Volume 1 was released.
|
| September 21
| "Friend or Foe" premiered in Canada.
|
| September 27
| Plankton's Fun House was released on Nick.com.
|
| September 28
| "The Original Fry Cook" and "Night Light" premiered in Canada.
|
| September 29
| "Fungus Among Us" and "Le Big Switch" premiered.
|
| October 9
| The Atlantis SquarePantis book was released.
|
| October 19
| "Spy Buddies," "Boat Smarts," and "Good Ol' Whatshisname" premiered in Canada.
|
| October 23
| SpongeBob's Atlantis SquarePantis was released on DS GameBoy Advance and Playstation 2.
Nicktoons: Attack of the Toybots was released in North America.
|
| October 26
| "New Digs" and "Krabs à la Mode" premiered in Canada.
|
| November 9
| Nicktoons: Attack of the Toybots was released in Europe.
"Roller Cowards" and "Bucket Sweet Bucket" premiered in Canada.
|
| November 11
| "The Original Fry Cook," "Night Light," "Roller Cowards," and "Bucket Sweet Bucket" premiered in Germany.
|
| November 12
| SpongeBob's first TV Movie, "Atlantis SquarePantis," premiered after the Z to A marathon.
SpongeBob's Atlantis SquarePantis was released on Wii.
"A Flea in Her Dome" and "The Donut of Shame" premiered in Germany.
|
| November 13
| Are We There Yet?, Beware Flying Jellyfish, and Documenting Our Road Trip premiered.
The SpongeBob's Atlantis SquarePantis DVD was released.
"Atlantis SquarePantis" premiered in Canada.
|
| November 14
| "Goo Goo Gas" premiered in Germany.
|
| November 15
| Nicktoons: Attack of the Toybots was released in Australia.
"Le Big Switch" premiered in Germany.
|
| November 16
| "To Love a Patty" and "Breath of Fresh Squidward" premiered in Canada.
"Picture Day" premiered in Germany.
|
| November 17
| "Pat No Pay" premiered in Germany.
|
| November 18
| "Blackened Sponge" premiered in Germany.
|
| November 19
| "Mermaid Man vs. SpongeBob" premiered in Germany.
|
| November 23
| Marathon of SpongeBob SquarePants, including 8 new episodes, featuring "The Inmates of Summer," The Two Faces of Squidward," "The Battle of Bikini Bottom," "Banned in Bikini Bottom," "SpongeHenge," "20,000 Patties Under the Sea," "Stanley S. SquarePants," and "To Save a Squirrel."
|
| November 26
| "The Krusty Plate" premiered in Germany.
|
| November 30
| "Money Talks," "SpongeBob vs. the Patty Gadget," and "Slimy Dancing" premiered in Canada.
|
| December 1
| "BlackJack" premiered in Germany.
|
| December 20
| Nicktoons: Attack of the Toybots was released on DS and Wii in Japan.
|
| December 21
| "The Krusty Sponge" and "Sing a Song of Patrick" premiered in Canada.
|
| December 22
| "Rise and Shine" and "Waiting" premiered in Canada.
|
| December 23
| "The Gift of Gum" premiered in Canada.
|
| December 26
| Underpants Slam! was released.
|
| December 28
| "A Flea in Her Dome," "The Donut of Shame," and "The Krusty Plate" premiered in Canada.
|
|
|
