Year(s)	Event
6 Billion Years Ago	The mysterious Guardian of Forever time portal comes into existence.
600,000 Years Ago	Inhabitants of the Tkon Empire perish when their sun goes supernova during the Age of Makto.
500,000 Years Ago	The Bajorian civilization has a flourishing culture. The inhabitants of Talos IV are almost completely destoryed by a massive war.
50,000 Years Ago	The planet-killer, or Doomsday Machine, built as an ultimate weapon.
22,000 Years Ago	The Trill begin their symbiotic relationships as a joined species which pairs an intelligent vermiform creature with a humanoid host.
5,000 Years Ago	The planet Sarpeidon experiences an ice age at which Spock and Dr McCoy make an unscheduled visit after venturing accidentally through the Atavachron time portal. Earth is visited by several aliens who take up residence in an area around the Mediterranean. They are later worshiped by the natives as gods, thus inspiring the Greco/Roman mythology.
3834 BC	Flint is born in Mesopotamia, Earth. The almost immortal Flint later assumed other identities, among them Merlin, Leonardo da Vinci and Johannes Brahms. He later settles on a small planet.
250	Surak leads the Vulcan people down a path of logic and peace in order to save their society from destruction. Dissidents leave Vulcan. Their offspring eventually become the founders of the Romulan Star Empire. The Metron who, in 2267, intercedes in a conflict between Captain Kirk and the Gorn, is born.
12th-13th C.	The cloud city of Stratos is built by the people of the planet Ardana.
1372	The sword of Kahless is stolen from the Klingon Homeworld.
1571	Bajorian solar sail ships begin to explore their solar system.
1864	An ancestor of William T. Riker, Thaddius 'Iron Boots' Riker, is injured at Pine Mountain.
1893	Data is thrown back in time to this year after investigating what appears to be his own head found by a works crew excavting under San Francisco. An away team of Picard,Riker,Troi, and La Forge also arrive in San Francisco this year after recreating the temporal vortex that threw Data back 500 years. Among others they meet in this time are Samuel Clemens (Mark Twain) and a young Guinan.
1930	Dr Leonard McCoy travels to this time after accidentally padding through the Guardian of Forever time portal while under the influence of an accidental injection of cordrazine. He almost causes a change in history but is stopped by Kirk and Spock.
1934	The first short story featuring Jean-Luc Picard's favourite detective, 'Dixon Hill', is published in the periodical Amazing Detective Stories.
1937	A group of aliens abduct 300 people from Earth, among them a Japanese army officer, a farmer, and pilot Amelia Earhart and her navigator Fred Noonan.
1969	The USS Enterprise finds itself 300 years back in time in the year 1969, as a result of a run in with a black hole. Officially registered as a UFO.
1983	Pioneer 10 leaves Earth's solar system, the first manmade object to do so. After drifting for many years it is finally destroyed by a Klingon Bird-of- Prey in 2287.
1986	Using a stolen Klingon Bird-of-Prey, Admiral Kirk and crew land in San Francisco to retrieve two humpback whales to take back to their own century to avert a cataclysmic disaster on Earth.
1992	Chicago Mobs of the Twenties is published. This book drastically alters the culture of Sigma Iotia II after it is left behind in 2168 by the USS Horizon. Khan Noonien Singh, a product of genetic engineering and eugenics takes control of one quarter of the Earth - South Asia to the Middle East.
1996	After being overthrown, Khan Nooien Singh, together with 96 fellow 'supermen', flees from Earth in the SS Botany Bay, a DY-100 class sleeper ship.
1999	The Voyager 6 is launched from Earth. This probe eventually finds itself on the other side of the galaxy after emerging from a black hole. The probe is modified on a mysterious machine planet that sends it on its way, where it eventually encounters the USS Enterprise in 2271.
2024	On September 1-3, the Bell Riots, led by Gabriel Bell, force the eventual closure of the Sanctuary districts across the United States. The actual photograph of Gabriel Bell at this time is that of Captain Benjamin Sisko of Deep Space Nine.
2030	The legendary inventor of the warp drive, Zefram Cochrane, is born on Earth.
2063	Zefram Cochrane successful demonstrates light-speed propulsion. And initiates 'First Contact' with the Vulcans the same day.
2117	Zefram Cochrane disappears after living in the Alpha Centauri system upto the age of 87. His body is never found he is presumed to be dead.
2160	Earth forces defeat the Romulans at the Battle of Cheron. The Romulan Neutral Zone is established by the Treaty of Algeron.
2161	The United Federation of Planets and Starfleet Academy are established in San Francisco, North America, Earth.
2165	Sarek, Federation diplomat and father of Spock, is born on Vulcan.
2168	An incident involving the accidental contamination of a culture on Sigma Iotia II prompts the Federation to adopt the Prime Directive in its manifesto.
2218	First official contact with the Klingon Empire.
2222	Montgomery 'Scotty' Scott is born in Scotland, UK, Earth.
2223	Relations with the Klingon Empire turn sour. Seventy years of hostilities ensue.
2224	Spock's half-brother, Sybok, is born to Sarek and a Vulcan princess.
2227	Leonard H. 'Bones' McCoy is born.
2229	Sarek marries the human female Amanda.
2230	The son of Sarek and the human Amanda, Spock, is born on the planet Vulcan.
2233	On March 22, a future captain of the USS Enterprise, James Tiberius Kirk, is born in Iowa, Earth.
2237	Hikaru Sulu is born in San Francisco, Earth.
2239	Uhura (meaning 'freedom' in Swahili) is born in the United States of Africa, Earth.
2245	A Constitution-class starship, the USS Enterprise NCC 1701, is launched from an Earth orbiting platform, the San Francisco Yards. Its first five-year mission is under way, commanded by Captain Robert April.
2245	Pavel A Chekov is born to Ukrainian parents.
2249	Spock chooses to attend Starfleet.
2250	James T Kirk enrolls in Starfleet Academy. The Enterprise returns from its first five-year mission. After a refit, she returns to space in 2251 under Captain Christopher Pike.
2252	Spock graduates from Starfleet Academy and Leonard McCoy graduates from Medical School.
2254	Kirk graduates from Starfleet Academy and is assigned his first duty aboard the USS Farragut. Captain Pike and his crew are involved in a violent incident on Rigel VII which results in the loss of three crew members. Two weeks later, Pike encounters the Talosians on Talos IV.
2256	The USS Enterprise enters space dock to undergo a refit at the end of its second five-year mission.
2257	Captain Christopher Pike begins his second five-year mission in command of the USS Enterprise.
2261	David Marcus, son of Carol Marcus and James Kirk is born. The USS Enterprise ends its third exploratory mission, and again enters space dock for refit.
2263	James T Kirk is promoted to Captain.
2264	James T Kirk, now Captain of the Enterprise begins his first five-year mission with the ship.
2265	A race of 'listeners', the El-Aurians is almost wiped out in one of the first known attacks by the Borg. The bartender of Ten-Forward on the USS Enterprise NCC 1701-d, Guinan, is an El-Aurian, as is Dr Tolian Soran, and both suffer a vicious attack by the Borg some years later.
2266	Dr Leonard H McCoy replaces Dr Mark Piper and begins an illustrious career serving under Captain James Kirk aboard the USS Enterprise NCC 1701. After an initial assignment as a staff physicist, Lt Hikaru Sulu transfers to helm officer aboard the USS Enterprise NCC 1701. Magnetic ore inadvertently beamed aboard the USS Enterprise from the planet Alpha 177 causes a transporter malfunction, and when Captain Kirk beams up from the planet's surface he is unwittingly split into two separate beings. One Kirk is evil, the other is good, but neither can survive in this dual state. While the evil Kirk runs amok and the good Kirk struggles to command, the landing party is stranded on the freezing planet. Mr Spock finally hits on a solution and uses a jury-rigged transporter to rejoin the two Kirks. With the Captain returned to his normal self, the landing party are beamed aboard - shivering but alive. While patroling the perimeter of the Romulan Neutral Zone, the Enterprise learns of the destruction of Federation Outposts Two, Three and Four by an unseen attacker. The Enterprise arrives at the last remaining outpost, but it arrives too late to save it from what turns out to be a Romulan Bird of Prey. The century-old neutral zone was set up as a buffer zone between Federation and Romulan Space, which an incursion from either side to be considered an act of war. This testing of the Neutral Zone by the Romulan crew in a cloaked ship constitutes the first encounter Captain Kirk and the Enterprise crew have with the Romulans, but it is not the last. When Kirk and crew are summoned to the home of Dr Thomas Leighton on the Planet Q, it soon becomes apparent they are there for a purpose - to see the actor Anton Karidian, who is suspected by Leighton of being the murderous ex-Governor of Tarsus IV. Twenty years previously, the Governor initiated a massacre of innocent civilians that included Leighton's family as well as some of Kirk's. Now it appears that Karidian is the alias of Kodos the Executioner, and is hiding his part disguised as the director of the Shakespearean acting troupe, The Karidian Company of Players. he is accompanied by his daughter, Lenore, who is later found to be a murderess.
2267	Spock is promoted from Lieutenant Commander to Commander. Commander Spock falsifies a message ordering the USS Enterprise to return to Starbase 11. The USS Enterprise arrives at Starbase 11, but it remains unclear why they were called back. It is then discovered that Spock has made a false computer record to lure Captain Kirk back to the Starbase. The true reasons behind Spock's abnormal behavior are revealed when he hijacks the Enterprise and heads to Talos IV. This violates General Order 7, forbidding any contact with this planet, under penalty of death (one of the very few death crimes around). Fleet Captain Pike was badly injured just months prior to Spock's actions in a training accident which exposed him to dangerously high levels of delta rays. The USS Enterprise serves as the venue for a court-martial proceeding against Commander Spock while the ship is en route to Talos IV. Spock faces many charges, including sabotage and abduction. When it transpires that events have been heavily influenced by the powerful Talosians, who can generate complex illusions, Kirk drops the charges against his first officer and allows Pike to be delivered to the planet to live out the rest of his days. The USS Enterprise, heading for Starbase 9, encounters a black hole. A massive effort is made to prevent the ship from being destoryed by the huge gravitational forces. Reversing the warp engines pulls the Enterprise away, but also propels it back in time and space to 1969, Earth. The Enterprise, by appearing over Nebraska in 1969, threatens to disrupt Earth's history. When a US Air Force Captain, John Chistopher, is beamed aboard after his ship breaks up in the ship's tractor beam, the Enterprise crew must find a way of returning the timeline to normal. The appearance of Captain Christopher aboard the USS Enterprise presents several problems. First, the ship has been recorded on film and will be analyzed by government officals. Second, Captain Christopher must be returned to Earth to have a son who will one day lead an important space expedition. Finally, the Enterprise crew must not further pollute the timeline before they can return to their own time. An away team of Kirk, Spock and Sulu retrieve the film of the USS Enterprise on Earth. Christopher is returned to his jet with only his only recollection being a brief glimpse of something unidentifiable. Scotty then manages to return the ship back to its proper time by duplicating the 'slingshot effect'. The USS Enterprise responds to a distree call near the Mutara sector from a centuries old ship - a DY-100 class sleeper from Earth. After the SS Botany Bay is boarded, and its inhabitants are awakened, Kirk and his officers discover a crew of refugees from the Eugenics Wars of 20th century Earth. The leader, Khan is a charismatic genetically engineered human whose history on Earth was that of a ruthless and powerful dictator. He ruled over a quarter of the entire planet from 1992-1996, encompassing southern Asia and the Middle East. Khan and his followers escaped certain death on Earth via the sleeper ship. With Khan's genetically engineered superhuman strength comes superhuman arrogance. He attempts to gain control of the USS Enterprise, even seducing one of Captain Kirk's officers, historian Marla McGivers, in the process. Kirk and his crew thwart Khan's plan. The captain must now choose between holding Khan prisoner, to be dealt with by offical means, or else exile him and his followers on a deserted, but inhabitable planet to start their lives over again. He chooses the latter and, rather than face a court martial, McGivers follows Khan to settle on Ceti Alpha V. Eventuallyu, she will marry the enigmatic would-be world conqueror. Arriving at Organia, the USS Enterporise finds that the Klingons are attacking the planet. Captain Kirk and Mr Spock meet the Organian Council - four elderly men who don't appear overly concerned with the prospect of war. Klingon Commander Kor heads the Klingon force on Organia, and Kirk and Spock act as an undercover team to find out more information. When the council reveal them to the Klingons, they are sentenced to death. With matters about to come to ahead on Organia, the true nature of the Organians is revealed. They take their natural, non-corporeal state, and inform both parties that they are now subject to a peace treaty, the Organian Peace Treaty, which forbibs hostilities between the Federation and the Klingon Empire. Dr McCoy inadvertently injects himself with highly dangerous new drug, cordrazine, while treating Mr Sulu on the bridge. Acting irrationally, McCoy attacks a transporter operator and beams himself down to an unknown planet containing a mysterious time portal. Kirk and a landing party follow him to the planet, but McCoy eludes the rescue attempt and passes through the portal, the Guardian of Forever. History is altered as he passes back to 1930s Earth, and Kirk and Spock follow him in an attempt to set time back on its proper course. Kirk and Spock arrive in Earth's past and take up lodgings. Kirk meets, and falls in love with, social worker Edith Keeler, while Spock sets about trying to access his tricorder with the unsophisicated equipment of the day. Spock manages to tap into the machine and learns of two different Earth histories. One is the past he and Kirk are from and the other is an alternative where Earth was taken over by Nazi Germany following World War II. The only way to prevent this alternate future, they learn, is to allow the death of Edit Keeler - the women Kirk is in love with. If the past is allowed to continue, Keeler's pacifist ideals will delay the US Government's entry into the war. Reunited with McCoy, Kirk must hold the doctor back from saving Edith as she crosses a busy road. Kirk turns away, unable to watch Edith die. This is one of the hardest acts Kirk will ever have to perform, but time is restored and he and his friends make it back to their own place in history. While negotiating a peace settlement on Epsilon Canaris III, Assitant Federation Commissioner Nancy Hedford contracts Sakuro's disease. The USS Enterprise is assigned to treat Hedford, and the senior staff take the Galileo shuttlecraft to collect her. Nancy Hedford is already at the end of her tether when the Galileo shuttlecraft's trajectory is stopped and rerouted to the planet Gamma Canaris N. There, they meet the youthful inventor of warp drive, Zefram Cochrane. Supposedly 137 years old, the refreshed Cochrane reveals that he was drawn to this planet by a cloud-like being he refers to as the Companion when he left Alpha Centauri at age 87 to die in space. The true intentions of the Companion are revealed when Spock and Kirk use a universal translator to get inside the mind of the benevolent creature. It turns out that Cochrane and the Companion have had a symbiotic relationship which led to them both forming an attachment with the other. When Nancy is in the final stages of her illness, the Companion decides to inhabit her body and take on a mortal form. Cochrane remains behind on the planet with 'Nancy' to live out the rest of their days together.