A timeline of events in the Memory Delta universe.

22nd century

2153

Events

• The construction of the second NX-class starship, Columbia, begins.
• Romulan agents kidnap the Aenar Gareb from Andor in order to use him as the pilot for their drone ship.
• Udar leaves the Augment camp on Trialas IV.
• January: Enterprise makes a detour to gather scientific data on a planet that recently shifted orbit to relocate between two gas giants and where there is a lot of volcanic activity to be expected. Travis Mayweather asks for a leave to visit ECS Horizon. The cargo ship is attacked by pirates.
• January: The Enterprise "rescues" three Denobulan scientists of the Denobulan Science Academy from the caves of Xantoras; meanwhile the Enterprise aids a ship which has problems with a reactor leak above the planet.
• January: The Enterprise makes first contact with the Vissians when they both study a hypergiant. Relations are tainted by Trip Tucker's interest in one cogenitor in the Vissian starship.

• March: The wreckage of a Borg Sphere is discovered in the Arctic. Borg drones found at the site regenerate and steal a ship. The Borg are eventually tracked down and destroyed by the Enterprise, but the Borg manage to send a subspace message to the Delta Quadrant that will take 200 years to arrive.
• March: Archer and T'Pol study the Robinson Nebula, as they name it, composed of dark matter. 
• March: The Enterprise explores an uninhabited planet on which Phlox and T'Pol are contaminated. Archer is captured by Skalaar who intends to give him back to the Klingons. However in the process he helps him escape and return to the Enterprise.
• March: The war between the various Triannon factions comes to an end with the destruction of the surface of the planet Triannon.
• An alternate timeline Enterprise commanded by Lorian attempts to stop the Xindi weapon from attacking Earth in the Delphic Expanse. The weapons are ineffective against the probe and Lorian has no choice but to set a collision course. His emotions take over and by the time he realizes his mistake, the probe had gone.

• March: A Xindi superweapon prototype fires a massive particle beam at Earth, cutting a path of destruction from Florida and Cuba across the Carribean basin to Venezuela, killing about seven million people. 
• The Xindi Crisis begins.
• April: Enterprise begins its search for the Xindi weapon in the Delphic Expanse.
• October: In an alternate timeline, Enterprise Captain Jonathan Archer's brain is infected by interspatial parasites, causing him to contract anterograde amnesia.
• October: Enterprise discovers a lost tribe of Humans on a Skagaran colony in the Delphic Expanse.
• October: T'Pol secretly begins to inject herself with Trellium. 
• November: The Xindi-Reptilian scientist Damron travels to Earth in the year 2004 in an attempt to wipe out the Humans, though he is foiled by the intervention of Daniels.
• November: Other first contacts made by Earth this year include the Antarans, the Osaarians, the Sphere-Builders, and the Vissians.

Promotions and transfers

• MACOs assigned to the Enterprise (NX-01). 

2154

Events

• January: En route to the red giant Azati Prime, Enterprise discovers a derelict Xindi-Insectoid ship on the surface of an uninhabited planet and apprehends a Xindi-Insectoid shuttlecraft. The Enterprise crew discovers a hatchery, containing Xindi-Insectoid eggs, aboard the Insectoid ship; one of multiple tendrils attached to one of the eggs squirts Enterprise Captain Jonathan Archer with a mild neurotoxin, which makes him obsessive about their protection. He authorizes MACOs to be put in place, until T'Pol, Commander Charles Tucker III and Lieutenant Malcolm Reed lead a successful mutiny against Archer. Once he is cleared of the neurotoxin, though, he resumes command. 
• January: Enterprise arrives at Azati Prime and, thanks to the Xindi-Insectoid shuttlecraft, the Enterprise crew manages to inspect the installation. Jonathan Archer decides to sabotage the Xindi weapon but is apprehended. In the process of his imprisonment, he gains Degra's trust. Enterprise is heavily damaged in the Battle of Azati Prime, where approximately eighteen crewmembers are killed. However, the attack is recalled by the Xindi-Primates.
• January: As the crew of Enterprise repairs the ship, Archer is delivered by the Xindi-Aquatics in an escape pod. After he is recovered, Hoshi Sato discovers a hidden message by Degra in the pod, inviting him to a meeting in three days. Unable to arrive in time, Archer decides to pirate an Illyrian starship to steal its primary warp coil.
• January: The crew holds a memorial for their dead shipmates. Enterprise arrives at a Delphic Expanse sphere, where it meets with Degra's ship. Archer briefs Degra about what he knows regarding the Delphic Expanse and the Sphere-Builders who are planning an invasion. Degra and Jannar offer to stop the launch of the weapon if Archer can prove the Xindi have been manipulated. After Archer reveals to them knowledge about the Xindi bio-weapon and other discoveries, Degra invites Archer to meet the Xindi Council to share this information. A Xindi-Reptilian warship arrives at the sphere, but is destroyed by Degra's ship, at Degra's instruction.
• January: Preparing to use a subspace corridor to travel to the Xindi Council planet, Enterprise encounters a version of itself from an alternate timeline generated by the subspace corridor, a duplicate under the command of Lorian, who is the offspring of Tucker and T'Pol. The crew of the two versions of the ship disagree on the proper way to pass through a nebula controlled by a hostile species called the Kovaalans. T'Pol is unable to achieve more than an eighty-six percent reduction of the particle wake with impulse manifold modifications, but an elder version of herself shows her where to place an isomagnetic collector (a piece of Ikaaran technology) to reduce any residual particles. Lorian's Enterprise helps Archer's Enterprise to pass the corridor but doesn't emerge from the other side itself. Under Archer's command, Enterprise meets with Degra. 
• February: Corporal Sean Hawkins is killed while defending T'Pol and Lieutenant Reed inside a Delphic Expanse sphere.
• February: Major Joss Hayes is killed on February 13th of this year.
• February: The Xindi weapon is destroyed by Jonathan Archer and his crew as it approaches Earth, thereby blighting the plan of the Sphere-Builders to annihilate Humanity and to prevent the Federation from forming in 2161.
• The Xindi Crisis, the crew of the Enterprise prevent the Xindi from destroying Earth. 
• February: In an alternate timeline, Earth is destroyed by the Xindi, who then proceed to wipe out most of the rest of Humanity.
• February: After the intervention of Enterprise in 1944 of an alternate timeline, the Temporal Cold War ostensibly comes to an end.
• February: Enterprise finally returns to Earth after the conclusion of the Xindi incident.
• May: Two unarmed Augments single-handedly hijack a Klingon bird-of-prey and kill its crew, setting in motion events that will significantly alter Klingon physiology for a period of time.
• May: Relations between Earth and the Klingon Empire nearly boil over into war because of intervention by Arik Soong and a group of Augments who regard him as their father.
• May: Arik Soong gives up his work in genetics and begins research in cybernetics.
• July: Administrator V'Las of the Vulcan High Command, while secretly taking Romulan advice, covertly orchestrates the bombing of the United Earth Embassy on Vulcan to discredit the Syrrannite movement and their interpretation of Surakian logic. Among the dead is Admiral Maxwell Forrest. The High Command also attempts to assault Andoria, to destabilize the region, but when the Syrrannites recover the Kir'Shara, the High Command is forced to disband.
• July: Enterprise travels to the Barrens. There, the inventor of the transporter, Emory Erickson, tries to search for his lost son, Emory, who is recovered but dies moments later.
• July: The Organians observe the crew of Enterprise reacting to an infection on board. Though Commander Tucker and Ensign Hoshi Sato die from the infection, Archer ultimately persuades the Organians to resurrect them. Owing to Organian influence, the Enterprise crew members retain no memories of their encounters with the species.
• November: In 2154 a temporary precursor to UFP alliance occurred known as the Alliance of 2154. The Romulans continue attempts to destabilize Earth's region of space. A Romulan drone ship attacks Andorian and Tellarite travelers to a planned peace conference on Babel. Other ships attacked include a Rigellian scoutship. A Human, Vulcan, Andorian, and Tellarite alliance is formed to help the species work together to locate the drone ship and lead to talks on board Enterprise.
• November: Columbia is launched from drydock.
• November: Enterprise Doctor Phlox is kidnapped and forced to help the Klingons discover a cure for a virus spreading through the Empire.Many Klingons are rendered ridgeless by the Augment virus.
• Notable Earth first contacts this year include the Illyrians, the Na'kuhl, and the Orions.

24th century

2386 was, on Earth's calendar, the 87th year of the 24th century, and the seventh year of the 2380s decade. Besides this time period's Human dates, in stardates this era begin with stardate 2386.0 in some systems of dating, and runs from stardate 63000.0 to stardate 63999 in others.

2386

Events

• Jean-Luc Picard receives the Crystal Planet Award. (PIC episode: "Remembrance")
• Daughter is entered into storage in Picard's section of the quantum archive at the Starfleet Archive Museum. The painting is given the item number 227.67. (PIC episode: "Remembrance")
• The bottle of Chateau Picard wine which Jean-Luc Picard later brought to Raffaela Musiker is manufactured. (PIC episode: "Maps and Legends")

• Lieutenant Icheb is captured and stripped for his Borg parts by Bjayzl, and subsequently euthanized by Seven of Nine. (PIC episode: "Stardust City Rag")

2399 was, on Earth's calendar, the 100th year of the 24th century, and the tenth and final year of the 2390s decade. Besides this time period's Human dates, in stardates this era begin with stardate 2399.0 in some systems of dating, and runs from stardate 76000.0 to stardate 76999 in others.

2399

Events

• After some delay, Doctor Naáshala Kunamadéstifee starts a residency at the Borg Artifact Research Institute by the Romulan Free State. (PIC episode: "Maps and Legends")
• After retired admiral Jean-Luc Picard gives his first interview, Dahj Asha seeks him out. She is subsequently killed by Romulan operatives. (PIC episode: "Remembrance")
• After discovering that the Zhat Vash are behind Dahj Ahsa's assassination, Jean-Luc Picard requests to be reinstated into Starfleet to find Bruce Maddox. He is denied and goes off to recruit a crew of his own. (PIC episodes: "Maps and Legends", "The End is the Beginning")
• Admiral Jean-Luc Picard travels to Vashti on board the ship La Sirena to request assistance to the Qowat Milat. (PIC episode: "Absolute Candor")
• Criminal businesswoman Bjayzl is executed by Seven of Nine in revenge for Icheb's death thirteen years earlier. (PIC episode: "Stardust City Rag")
• Bruce Maddox is killed by Agnes Jurati. (PIC episode: "Stardust City Rag")

The year is established in "Maps and Legends", where an on-screen caption states 2385 to be "fourteen years ago".

In "The End is the Beginning", Picard says that it is harvest time in France. This time can begin as early as late August and can last as long as early October.

• Typhuss visits Seven of Nine at the 602 Club in Mill Valley on Earth to recruit her to help him find his friends from the USS Voyager, Portia and his daughter Sarah. Its been awhile since Typhuss last saw Seven. Seven tells Typhuss it has been 7 years (2392) since she last saw him. (Star Trek: Intrepid episode: "Seven of Nine and The Admiral")