War Era universe

The Book of the War described the state of reality during the War in Heaven as the "War Era universe", viewing it as distinct both from the pre-War version of reality, and what would follow it. However, it did not correspond to a single state of history, but to an entanglement of them: the timelines of all the planets in the Spiral Politic were constantly rewritten for as long as the War lasted. (PROSE: The Book of the War)

From the perspective of the post-War universe, by some accounts, this state of reality was an overwritten palimpsest. (PROSE: Father Time, The Gallifrey Chronicles)

The Last Great Time War, a time war whose exact relationship to the War in Heaven was a point of contention between many dissenting account, (PROSE: The Eyeless, The Paradox Moon, etc.) was also documented in some sources to have constituted a distinct "Time War timeline". (PROSE: Dalek: The Astounding Untold History of the Greatest Enemies of the Universe)