23 April

Events
to be added

Behind the scenes

 * 1904 - Leslie French (the mathematician in DW: Silver Nemesis) was born.
 * 1922 - Jack May was born.
 * 1966 - "The Final Test", Episode 4 of DW: The Celestial Toymaker, was first broadcast.
 * 1974 - Verona Joseph, who played Penny Carter in DW: Partners in Crime, was born.
 * 1975 - William Hartnell died.
 * 2005 - DW: World War Three was first broadcast.
 * 2010 - Eiji Kusuhara, Toshio Shimura in BFA: Enemy of the Daleks, died.
 * 2011 - DW: The Impossible Astronaut was broadcast on BBC One and BBC America.