25th century

In the 25th century, the planet Earth, under a repressive government, had a population of 100 billion people, most of them living on floating islands. It was a highly polluted planet. (DW: Colony in Space)

The education system was highly accelerated at this point, students obtaining certificates in a vast range of disciplines by the age of ten. They were taught by machines for one hour a week. In comparison, a 20th century high school was like a nursery. (DW: The Web Planet)

Most Earth colonies during this time were "terrible places". (NA: Christmas on a Rational Planet)

By this time The Beatles were considered classical music, and a memorial theatre dedicated to them existed in Liverpool. (DW: The Chase)

Aspirin tablets were no longer in common use. (DW: The Web Planet)

Humanity has the ability to travel in hyperspace with such journeys being common and commercial. (NSA: Judgement of the Judoon)

Minor Events

 * 2400: The Doctor and Benny visit the Seven Planets and witness their destruction. (NA: The Pit)
 * 2454: The Telepath Uprising occurs. Morret was a veteran of this conflict, giving him immunity to the Doctor's psychic paper. (NSA: Judgement of the Judoon)
 * 2471: A large group of people seeking land and freedom leave Earth. They settle on the planet Uxarieus and found a colony there. (DW: Colony in Space)
 * 2472: The ownership of Uxarieus, a Human colony, becomes disputed when the colonists' claims are disputed by the Interplanetary Mining Corporation. Meanwhile the Master attempts to gain control of the Doomsday Weapon. (DW: Colony in Space)
 * 2479: Construction of Terminal 13 of Elvis the King Spaceport on New Memphis begins. (NSA: Judgement of the Judoon)
 * 2480: The Korven invade Earth but fail due to the Earth's temperature, this starts a state of hostility between Humanity and the Korven which lasts to at least 2618. (K9TV: The Korven)
 * 2487: Terminal 13 of Elvis the King Spaceport on New Memphis opens amid turmoil in the Spaceport. (NSA: Judgement of the Judoon)
 * 2493: Don Arco moves to the Justica System. (NSA: The Monsters Inside)
 * UK-201, a Human spacecraft carrying Vicki Pallister, her father and Bennett, crashes on Dido. (DW: The Rescue)

Notable individuals
Vicki Pallister, companion of the First Doctor, was native to this era.

Nikki Jupiter, temporary companion of the Tenth Doctor was native to this era.