HC 7818
From Tardis Wiki, the free Doctor Who reference
According to the Huskix Cycle, the year 7818 was the equivalent of the Earth year of 2004. The Battle of Ygnbnbby occurred in this year, as well as an event experienced by the Doctor which involved moon eels.
The Thirteenth Doctor was still able to recall this year perfectly, even after its corresponding Earth year had vanished from history. (PROSE: Time Lapse [+]Loading...["Time Lapse (short story)"])
