watch 01:12 The Loop (TV) Do you like this video? 400 was a number. Hearing the Eleventh Doctor give his age as "twelve hundred and something", the War Doctor noted that that would make him 400 years older than himself. (TV: The Day of the Doctor) In a linear sense, the Last Great Time War lasted for at least four hundred years. (PROSE: Engines of War) Arcadia was defended by four hundred sky trenches. The Daleks broke through them all in the last day of the Time War. (TV: The Last Day) Retrieved from "https://tardis.fandom.com/wiki/400_(number)?oldid=2956653" Categories: Numbers + cat Cancel Save Community content is available under CC-BY-SA unless otherwise noted.