21 June

On 21 June 2540, Bernice Summerfield was born. (AUDIO: Just War, PROSE: Just War, The Doomsday Manuscript)

In 1815, Napoléon Bonaparte abdicated for the second time. (PROSE: World Game)

In 2008, having been unfrozen the previous day, Tommy Brockless went back to St Teilo's Hospital. Jack Harkness gave him a rift key so he could shut the time shift window once he returned to 1918. From 2008, Toshiko Sato convinced shell-shocked Tommy, now again in 1918, to use the key and separate the two timezones. (TV: To the Last Man)