1883

In 1883, Krakatoa erupted. Some time prior to his third incarnation, the Doctor witnessed the eruption of Krakatoa. He also heard Primords for the first time. (TV: Inferno) That same day, a sketch of the Ninth Doctor washed up on a beach on Sumatra - implying the Ninth Doctor also witnessed the eruption. It eventually found its way into Clive Finch's collection of artefacts related to the Doctor. (TV: Rose)

The Tenth Doctor and Rose also visited Indonesia and encountered the alien Chalderans. They escaped in the TARDIS just as the volcano erupted. (COMIC: Under the Volcano) The Xylok that later became Sarah Jane Smith's supercomputer, Mr Smith, was released by the explosion. (TV: The Lost Boy)

Unknown dates

 * The Seventh Doctor took Ace to Gabriel Chase to confront her childhood fears of the house. (TV: Ghost Light)
 * Geoffrey Greystone married Lady Edith Howarth. (PROSE: 64 Carlysle Street)
 * Neville Albert Miller was born. (PROSE: Salvation)
 * Hester Stanton was born. (PROSE: Wolfsbane)