Ancient past-

A bored King Neptune travels back in time and creates a pocket universe filled with sea creatures that would evolve to become similar to mankind so he could one day rule over them, returning to his time afterwards.

7,985 BC (Minimum)-

Bubbles, a member of a race of talking dolphins who protected the cosmos, begins to watch over our solar system.

6,000 BC-

A violent cave sponge named Spongy Spongy becomes trapped in ice and remains there until 2017.

2,990 BC-

King Neptune creates a physical body for himself that slowly ages to adulthood.

2,890 BC-

Neptune's sun and Neptune's moon rise and then die down for 100 years.

1701 AD-

The Star family ruled Bikini Bottom, and they would be dubbed "Patlantis" by Patrick Star.

1731-

The book of destiny is created in the same way as in timeline A, and its story plays out the same as well, with the pirate staying on Bikini Atoll to guard it.

1804 AD-

The star family loses power, and King Neptune's family ultimately gains full control of Bikini Bottom.

1842-

Reginald "Goofy" Goober founds the Goofy Goobers restaurant (which at this point was a seahorse drawn wagon), serving warm Ice Cream on rocks and sticks.

1850-

Reginald Goober disappears.

1950-

The superheroes Mermaid Man and Barnacle Boy emerge, and in the following years several other superheroes and villains emerge.

1954-

Rusty's Rib Eye is opened for business.

1955-

Fingerfun industries and the Glove World theme park are founded by billionaire Hieronymus Glove.

1957-

4 children are lost in the Rib Eye's lost and found and remain trapped for the next 60 years.

September 28th, 1960-

Eugene Krabs is born.

August 21st, 1961-

Sheldon Plankton is born.

December 15, 1966-

Hieronymus Glove cuts off his head and cryogenically freezes it.

1970-

Mermaid Man and Barnacle Boy retire, and the super criminals become extremely petty with no heroes to fight, to the point of literally operating under a dumpster. The same year, Squidward Tentacles is born.

1980-

Mr Krabs joins the Navy, being a cook on a suntan lotion cargo ship. However, the cook, Captain Scarfish, didn't like that Krabs wasn't serving his men slop. However, when Krabs is thrown in the brig, a pirate attack forces Krabs to break out and stop it alongside one of his guards. Afterwards, Krabs is made captain of the ship.

1982-

The Guinness O'Ripley enormous book of curiosities, oddities and world records is published.

1984-

Mr Krabs develops a Chum addiction after oversleeping and only having chum left for food. The same year, Larry the Lobster is born. This would also be the last year for 35 years that weatherman Gale Doppler got the weather wrong. Mr Krabs also meets Plankton, who was working on one of his evil experiments, and the two of them start playing cards together.

1985-

A war breaks out between pirates and the navy. Krabs serves on a battleship during this time period. The same year, Bubble Bass is born.

February 26, 1986-

Patrick Star is born.

July 11th, 1986-

Spongebob Squarepants is born.

October 7th, 1987-

Sandy Cheeks is born in Texas, United States.

1989-

Krabs and the Pirate Queen, the leader of the pirate crew he had beaten in 1980, are marooned on a remote island during a battle.

1990-

Rusty retires and his Rib Eye is shut down. The same year, the pirate war ends, and Krabs is found on the island, holding a baby whale. The pirate queen had died in the birthing process. Afterwards, Krabs returns home. Also in this year, Tony the Turtle falls asleep on conch street, his crud covered shell eventually being mistaken for a rock.

1991-

Mr Krabs hires Squidward to babysit Pearl, and pays him generously for it. Despite this, Squidward immensely regrets being put through the wringer by Pearl, and quits babysitting altogether. This year, Patrick also develops a tick that causes him to go into a temper tantrum whenever he heard the sound of his rubber ducky because of his parents trying to get him to have a bath. However, he remembers it as a bell, and that becomes his tick.

1992-

Plankton marries a sentient AI he had created called Karen. The same year, Spongebob and Patrick attend Kamp Koral, meeting the hillbilly narwhals Narleen and Nobby. Squidward was also at Kamp Koral as one of the adult councilors.

1993-

Rusty Rickets passes away.

1996-

The Krusty Krab is founded by Mr Krabs, being built on the exact spot where Rusty's Rib Eye once stood. The success gained from his restaurant ends up turning him terribly greedy.

1997-

Plankton first tries to steal the krabby patty secret formula.

1999-

Squidward joins the Krusty Krew, with Spongebob following soon after saving Squidward and Mr Krabs from a horde of ravenous anchovies. This event was seen by Pa cheeks, who had been sent down by Scuba divers to examine the bikini bottomites after they were discovered, believing them to be mutated by the Bikini Atoll tests.

2000-

Plankton creates a female money robot named Cashina to trick Krabs into marrying it, and the plan almost works, but ends up failing. Shortly after, Krabs meets Spongebob's driving teacher Mrs Puff, and the two begin dating. The same year, Plankton manages to beat Krabs at a card game and temporarily takes Spongebob as an employee, but ends up regretting it and giving him back.

2001-

Spongebob attempts to befriend Plankton due to feeling sorry for him, and while initially Plankton is happy, he ultimately returns to his formula snatching ways.

2003-

Plankton uses a machine to see a simulation of what life would be like if he and Krabs switched lives. He doesn't like what he sees, and is quickly overwhelmed and ends the simulation.

2004-

SpongeBob visits Rock Bottom.

2007-

For the 10th anniversary of he and Krabs's rivalry, Plankton enlists the help of his entire family to steal the Krabby Patty formula. While he gets close, Krabs creates a fake recipe stating Plankton to be the Krabby Patties main ingredient, scaring him off.

2008-

Plankton cheats on Karen with Mr Krabs's mom, and tries to replace her with 3 robots. Despite these marital hiccups, the two stay together.

October 2009-

Sandy, now a scientist, is sent underwater, initially without knowledge of why exactly. She meets Spongebob, and the two become fast friends. She even teaches him karate, although he sucked at it.

December 31st, 2009-

Sandy introduces Christmas to the Bikini Bottomites.

2010-

A movie is made about Spongebob and his friends, which tells of the same events that occurred surrounding the Krusty Krab 2 and Plan Z that happened in timeline A. An actor plays a fake King Neptune, which in Timeline A was Arion.

2011-

The Gal Pals, consisting of Sandy, Mrs Puff and Karen, are established. The same year, Spongebob creates a bubble friend he names Bubble Buddy, which eventually comes to life and moves to Bubbletown.

2012-

The pirate Burgerbeard gets his hands on the book of destiny and uses it to steal the krabby patty formula. As Bikini Bottom descends to chaos, Spongebob and Plankton make a temporary alliance to get the formula back. However, it is only with the aid of Bubbles that Spongebob and Plankton, as well as Patrick Sandy and Mr Krabs, are able to defeat Burgerbeard and reclaim the formula.

January 2013

Plankton uses a page from the book of destiny to make Spongebob as stupid as Patrick, although his intelligence would end up fluxuating over the years before settling into the hyper chaotic dimwitted moron whose mere presence brough nothing but misery to almost everyone around him, and destruction to everything around him.

May 24th, 2013-

The bank of Bikini Bottom bank is opened. The first 100 customers who join receive instant interest on their deposit.

May 25th, 2013-

Plankton adopts a pet amoeba he names Spot.

2014-

The Gal pals have a fight with their 4th member Flibberty Gibbet, which results in her running off into the woods and disappearing. The same year, Squidward forms the We Hate Spongebob club, a therapy group for those who had suffered at the hands of Spongebob.

2015-

Plankton attempts to use the book again to steal the Krabby Patty formula, but the Krusty Krew intercepting him causes him to accidentally turn the world even more cartoony than it already was. Before he can reverse it, the page is destroyed. This loonyness even ended up affecting the surface, creating human copies of Spongebob, his friends, and even Plankton himself. They exist in a restaurant known as the Rusty Slab.

February 14th, 2016-

Larry opens a gym, the first day being free. He takes Spongebob under his tutelage, but he leaves soon after.

February 19th, 2016-

The Krabby Patties are replaced with frozen Krabby Patties, and the Krusty Krab is converted into a museum. However, Spongebob discovers that the frozen patties were made of sand and with the aid of Patrick, who had become the frozen patty's spokesperson, exposes the truth to the public. The frozen patties are discontinued and the Krusty Krab is reopened.

June 10th, 2017-

Spongebob discovers the 4 children who were trapped in Rusty's Rib Eye's lost and found in 1957 while searching for a child's lost toy, and after several shenanigans, is able to reunite them with their parents.

October 7th, 2017-

Neptune's moon rises, turning all the Bikini Bottomites into primitive sea creatures. Sandy, with the aid of her fellow researcher simply named Frenchy, manages to keep them alive long enough for Neptune's moon to dip. However, Neptune's sun then rises, turning her into a regular squirrel as well.

October 20th, 2017-

A new Krabby Patty made by Sandy turns the Bikini Bottomites into Krabby Patty zombies. Spongebob and Plankton end up the only ones left, and are able to reverse the zombification via Chum.

October 31st, 2017-

After seeing Spongebob so scared on Halloween, Patrick teaches him that scary = funny. Upon seeing Spongebob laugh on Halloween, an enraged Flying Dutchman tries to teach him the meaning of scary. However, when he sees Spongebob's mind, he gives up and leaves, being absolutely horrified at Spongebob's brain.

July 11th, 2019-

Spongebob has his 33rd birthday, going to the surface for a tour while his friends prepare a surprise party. When he returns to the sea, Patchy the Pirate, his biggest fan who had wanted to meet him for 20 years, attempts to launch himself out of a cannon to give him a present. However, he ends up burying himself in sand and suffocates, hallucinating a meeting as he dies.

July 12th, 2019-

Patchy's ghost travels to Bikini Bottom to meet Spongebob, but when he sees Spongebob and all his friends partying without him, Spongebob never even knowing he existed, Patchy becomes enraged and swears revenge. He then slinks off to train his ghost powers.

August 9th, 2019-

Chip Plankton II is born.

November 19th, 2021-

Spongebob reunites with Narleen and Nobby.

December 2021-

Spongebob leaves a christmas present for Santa, but he doesn't see it.

June 2022-

Spongebob Patrick and Plankton attempt to deliver Santa's christmas present, and eventually succeed at doing so, along the way meeting copies of Patchy and Potty created in their dimension.

November 20th, 2022-

The present day.

7019-

Patchy the Pirate finishes his ghost training, but realizes that Spongebob and his friends are all long dead. So, he renames himself the Flying Dutchman, and uses his powers to go across time and timelines, torturing the Spongebobs from all 3 realities.