25 December

History of the Doctor Who Universe

 * Traditional date of Christmas Day.
 * 1869: The Ninth Doctor and Rose Tyler encounter Charles Dickens in Cardiff during the events of The Unquiet Dead.
 * 2006: The Tenth Doctor, Rose Tyler, and Mickey Smith stop an invasion of Earth by the Sycorax during the events of The Christmas Invasion.
 * 2009: A spacegoing replica of the RMS Titanic, also called the Titanic, narrowly avoids a planned collision with Buckingham Palace thanks to the timely intervention of the Doctor. (DW:Voyage of the Damned)  Had it hit, London would have been destroyed in a nuclear blast. (DW:Turn Left)

History of Doctor Who

 * 1965 - "The Feast of Steven" First Broadcast (The Daleks' Master Plan Episode 7)
 * 1984 - Birth of Georgia Moffett (daughter of Peter Davison, later to portray the Doctor's daughter Jenny)
 * 1988 - Writer and director Terence Dudley dies
 * 2005 - The Christmas Invasion First Broadcast
 * 2006 - The Runaway Bride First Broadcast
 * 2007 - Voyage of the Damned First Broadcast