31st century

Events

Daniels is born. By this time, time travel is so commonplace that there are quantum discriminators on every high school desk. (ENT: "Shockwave, Part II")
Daniels, fearing a change in the timeline, transports Jonathan Archer to this time, causing a catastrophic timeline change that wipes out his entire civilization. Returning Archer to 2152 remedies the problem. (ENT: "Shockwave", "Shockwave, Part II")
A 31st century timepod from a faction involved in the Temporal Cold War travels back to the 22nd century. (ENT: "Future Tense")
3074 - In the Delta Quadrant, a Kyrian historian discovers a back-up copy of the Doctor. After he is reactivated, the Doctor corrects the distorted view of the USS Voyager in Kyrian history and precipitates a new harmony between the Kyrian and Vaskan races. After many years as Kyrian Surgical Chancellor, the copy of the Doctor boards a ship and heads for the Alpha Quadrant, to find out what happened to his fellow crewmen and the Voyager. (VOY: "Living Witness")
- Kyrians obviously have had no contact with the federation between their encounter with voyager and this time, despite claims by Q that the federation will have a presence in the Delta Quadrant as soon as the late 25th century (VOY: "Death Wish")