Year 2000 (MM) was a leap year of the Gregorian calendar that started on a Saturday. It was a century leap year. After "Hooky" and "Mermaid Man and Barnacle Boy II" premiered on April 8, 2000, no new episodes aired until October. This also happened in 2004. This will be the second and last time there were episodes in December until 2012, when "It's a SpongeBob Christmas!" premiered.

Date Event(s)
January 17 "Sleepy Time" and "Suds" premiered.
February 14 "Valentine's Day" and "The Paper" premiered.
March 4 "Help Wanted," "Reef Blower," and "Tea at the Treedome" premiered in Canada, marking the premiere of the series in Canada.
March 6 "Help Wanted," "Reef Blower," and "Tea at the Treedome" the pilot episodes, premiered in Norway thus marking the premiere of SpongeBob SquarePants in that country.
March 11 "Bubblestand" and "Ripped Pants" premiered in Canada.
March 15 "Arrgh!" and "Rock Bottom" premiered.
March 18 "Jellyfishing" and "Plankton!" premiered in Canada.
March 20 The video game developer, Denki was founded.
March 22 "Texas" and "Walking Small" premiered.
March 25 "Naughty Nautical Neighbors" and "Boating School" premiered in Canada.
March 28 "The Paper" premiered in Australia.
April 1 "Fools in April" and "Neptune's Spatula" premiered.
April 8 "Hooky" and "Mermaid Man and Barnacle Boy II" premiered.
April 22 "Pizza Delivery" and "Home Sweet Pineapple" premiered in Canada.
April 29 "Mermaid Man and Barnacle Boy" and "Pickles" premiered in Canada.
May 1 The SpongeBob SquarePants series became 1 year old.
May 27 "Hall Monitor" and "Jellyfish Jam" premiered in Canada.
July 1 "Sandy's Rocket" and "Squeaky Boots" premiered in Canada.
July 3 SpongeBob's Nicktoon Summer Splash was ran for the first time.
July 15 "Nature Pants" and "Opposite Day" premiered in Canada.
July 29 "Culture Shock" and "F.U.N." premiered in Canada.
August 1 Tea at the Treedome book was published.
August 26 "Squeaky Boots" premiered in Europe.
September 1 Naughty Nautical Neighbors (book) was published.
September 16 "MuscleBob BuffPants" and "Squidward the Unfriendly Ghost" premiered in Canada.
September 20 SpongeBob SquarePants was greenlit for a third season before the second even began.
September 30 "The Chaperone" and "Employee of the Month" premiered in Canada.
October 26 "Something Smells" and "Bossy Boots" premiered.
October 30 "Scaredy Pants" and "I Was a Teenage Gary" premiered in Canada.
October 31 Nicktoons Racing was released on PC.
November 1 The Hall Monitor book was released.
November 2 "Your Shoe's Untied" and "Squid's Day Off" premiered.
November 4 "SB-129" and "Karate Choppers" premiered in Canada.
November 11 "Sleepy Time" and "Suds" premiered in Canada.
November 16 "Big Pink Loser" and "Bubble Buddy" premiered.
November 18 "The Paper" premiered in Canada.
November 25 "Arrgh!" and "Rock Bottom" premiered in Canada.
November 27 "Mermaid Man and Barnacle Boy III" and "Squirrel Jokes" premiered.
December 6 "Christmas Who?" premiered.
December 23 "Texas" and "Walking Small" premiered in Canada.
December 28 "Dying for Pie" and "Imitation Krabs" premiered.