15 April

History of the Doctor Who Universe

 * 1912 - Birth of Charlotte Pollard, future companion of the Eighth Doctor. (BFA: Storm Warning)
 * 1980 - Birth of Samantha Jones, future companion of the Eighth Doctor, probably in London, as she was educated at Coal Hill School in Shoreditch. (EDA: Unnatural History)

History of Doctor Who

 * 1967 - Episode 2 of DW: The Faceless Ones was first broadcast.
 * 1972 - Episode 2 of DW: The Mutants was first broadcast.
 * 2006 - DW: New Earth was first broadcast.