5320s

To best of his knowledge, the Ninth Doctor's memories of the Last Great Time War were put up for auction by Addison Delamar on Nomicae within the 5320s in either 5324 or 5325. Among the bidders were the Cybermen, who laid waste to Nomicae. In light of this, Tara Mishra, one of the Doctor's companions, chose to stay behind for a while to provide assistance to the survivors. (COMIC: The Bidding War)