Memory Alpha
Memory Alpha
Multiple realities
(covers information from several alternate timelines)

The 25th century was defined in the calendar of Earth as being from 2401 until 2500.




Norvo Tigan is scheduled to be released from prison. (DS9: "Prodigal Daughter")
Christopher Pike states the USS Discovery would reach Terralysium in this year using just warp power. (DIS: "New Eden")
The game Star Trek Online is set from 2409 to 2411.
If Quark had sold a small cloaking device and Odo found out about it in 2370, this is when the fifty year sentence the Changeling threatened, in which he would dig trenches at a penal colony, would end. (DS9: "Profit and Loss")
Solosos III is expected to become inhabitable for Humans again. (DS9: "For the Uniform")
According to Benjamin Sisko in 2371, Meridian returns to the prime universe in this year. (DS9: "Meridian")
In 2371, at the very beginning of their journey home, this was the year the crew of Voyager expected they would reach Federation space. (VOY: "Caretaker")
Jadzia Dax predicts that Miles O'Brien will die peacefully in bed this year surrounded by family and friends. (DS9: "To the Death")
2490 (circa)
The last known contact with the Q Continuum occurs around this timeframe. (DIS: "The Examples")

Alternate timeline events

The following events take place in an alternate timeline in which the USS Voyager does not enter the Borg transwarp conduit network and return to Earth in 2378. (VOY: "Endgame")


The following events take place in an alternate timeline in which Benjamin Sisko is displaced out of time. (DS9: "The Visitor")

Morn takes over Quark's Bar from Quark, renaming it Morn's.
Benjamin Sisko briefly appears in normal time.
Nog is a Starfleet captain. Jake Sisko asks Jadzia Dax and Julian Bashir to help Jake free his father from his displaced time. Nog gets the USS Defiant out of retirement and Worf obtains permission to enter Bajoran space.
Jake Sisko dies, thus releasing his father from the subspace link that ties them and negating this timeline.

The following events take place in an alternate timeline in which Alexander Rozhenko chooses to never become a Klingon warrior. (TNG: "Firstborn")

  • Alexander announces that the House of Mogh is ending its feud, adding that there would be no more retribution or revenge. Though warned by his father, Worf, the enemies of the Great House see Alexander's weakness and move against him, resulting in the death of Worf on the floor of the Great Council Chamber.
Alexander travels back to 2370 in the hopes of convincing his past self to become a warrior, thus avoiding the death of his father.
It remains uncertain whether Alexander actually managed to alter history, although he does enlist in the Klingon Defense Force, as seen in DS9 Season 6.
24th century Timeline 26th century


25th century productions

Background information


  • In the game Star Trek Online, Humans reach the Delta Quadrant in the year 2410, along with the Romulan Republic and the Klingon Empire, through the use of Dyson spheres and Iconian gateways. This contradicts the Q's prediction of Humans reaching the Delta Quadrant in 2472. This year also sees the Iconians return from exile in the Andromeda Galaxy and engage in a massive invasion of the Milky Way, forcing all the major powers of the galaxy to join together to fight them.

External links