31 December

History of the Doctor Who Universe

 * 1999 - The newly-regenerated Doctor and Grace Holloway searched San Francisco for an atomic clock. (DW: Doctor Who)
 * 1999 - Alex Hopkins, head of Torchwood Three, killed all of his staff except Jack Harkness, then committed suicide. Jack assumed control of Torchwood Three. (TW:Fragments)
 * 2599 - A New Years' party at the Braxiatel Collection was interrupted by murder. (BFBS: The Doomsday Manuscript)

History of Doctor Who

 * 1927 - Frank Gatliff was born.
 * 1966 - Episode 3 of DW: The Highlanders was first broadcast.