20 January

On 20 January 1649, Charles I, King of England, Scotland, France and Ireland was to stand trial by the Rump Parliament according to history books. (PROSE: The Roundheads)

In 1920, Toshiko Sato's grandfather was born in Japan. (TV: Captain Jack Harkness)

In 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)

In 1961, John F. Kennedy was inaugurated as President of the United States, the first Catholic in the position. (PROSE: Time Traveller's Diary)

In 2009, Barack Obama was inaugurated as President of the United States, the first African-American in the position. (PROSE: Time Traveller's Diary)

In 2086, Gavin A32X40 was inaugurated as President of the United States, the first robot in the position. (PROSE: Time Traveller's Diary)