20 January

On 20 January 1941, Jack Harkness and Toshiko Sato met the real Jack Harkness at The Ritz in Cardiff. (TV: Captain Jack Harkness) A younger version of "Captain Jack" was in London on the very same night. According to a detailed search of UK records performed by Gwen Cooper's police colleague, Yvonne, Captain Jack Harkness failed to report for duty on the morning of 21 January 1941, and he was never heard from again. (TV: Everything Changes) This mostly likely indicated that Jack's first encounter with the Ninth Doctor and Rose Tyler (TV: The Empty Child/The Doctor Dances) occurred on the evening of 20 January.

On the same day in 1920, Toshiko Sato's grandfather was born in Japan. (TV: Captain Jack Harkness)

Behind the scenes

 * 1902 - Actor Stephen Jack was born.
 * 1930 - Actor Henry Woolf was born.
 * 1934 - Tom Baker, who portrayed the Fourth Doctor, was born.
 * 1950 - Actress Liza Goddard was born.
 * 1968 - Episode five of The Enemy of the World was first broadcast on BBC1.
 * 1970 - Actor Mitch Benn was born.
 * 1973 - Episode four of The Three Doctors was first broadcast on BBC1.
 * 1979 - Part one of The Armageddon Factor was first broadcast on BBC1.
 * 1984 - Part two of The Awakening was first broadcast on BBC1.
 * 1985 - Actress Olivia Hallinan was born.
 * 1990 - Actor John Maxim died.
 * 2008 - Actor Kevin Stoney died.
 * 2010 - Visual effects designer Ian Scoones died.