Age of Aquarius

The Age of Aquarius was an epoch of human experience which Jack Stimson believed the Human Be-In was meant to usher in. In January 1967, Jessica Willamy believed that the era was "coming up fast". (PROSE: Wonderland)

In the 1970s, Jo Grant told a skeptical Third Doctor that it really was the dawning of the Age of Aquarius. (TV: The Dæmons)

Behind the scenes
Wonderland, like real life sources, does precious little to actually define the Age of Aquarius, other than to suggest that it was "coming".