49th century

Events

 * Humans terraformed Alfava Metraxis, and began to settle the planet. Over the next two centuries its population would grow to six billion. (DW: The Time of Angels)
 * World War V happened at some point in the this century. (BFA: Singularity)
 * The Hokrala Corp is active. (TWN: The Undertaker's Gift)

Behind the Scenes
In the original pilot episode, Susan Foreman and The Doctor were from the 49th century.