26th century
From Tardis Wiki, the free Doctor Who reference
In Mutter's Spiral, the Earth Empire flourishes (and possibly begins during this century). Tensions exist between that Empire and the Empire of the Draconians and even more so with the Daleks. (DW: Frontier in Space)
The 26th century also saw the beginning of the Cyber-Wars, in 2526 where the Earth Empire and several allies fought the Mondasian Cybermen
Decades
25th century | Timeline | 27th century |