2100

2100 was a year.

Dated
On 27 August, the Mona Lisa was revealed to be a fake, leaving the art world in turmoil. (PROSE: Time Traveller's Diary)

Undated
The Sixth Doctor and Grant Markham were in orbit over Mars, observing the beginning of the so-called Colonial Age. They watched the New Hope head out for the planet that would come to be known as Agora. It was just the first of about a dozen successful colonisation efforts under the aegis of the Century Program. (PROSE: Killing Ground)