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, the Ninth Doctor, having stolen a Time War weapon from Althea Bryce, visited Krakatoa to bury it so it could be destroyed in the eruption, two hours later. However, a younger version of Althea Bryce later retrieved the weapon, creating a temporal loop. (AUDIO: Her Own Bootstraps) Also that same day, a sketch of the Ninth Doctor washed up on a beach on Sumatra. It eventually found its way into Clive Finch's collection of artefacts related to the Doctor. (TV: Rose)

The Torchwood Institute tracked the Doctor to Krakatoa after the eruption. (COMIC: The Time Machination)

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)

The Seventh Doctor took Ace to Gabriel Chase to confront her childhood fears of the house. (TV: Ghost Light) The Torchwood Institute later investigated the Doctor's involvement in the Gabriel Chase incident. (COMIC: The Time Machination)

Geoffrey Greystone married Lady Edith Howarth. (PROSE: 64 Carlysle Street)

Neville Albert Miller was born. (PROSE: Salvation)

Hester Stanton was born. (PROSE: Wolfsbane)

Ulysses and Penelope Gate left Marnal with Penelope's mother on Earth to start his exile. (PROSE: The Gallifrey Chronicles)

The last known quagga supposedly died in Amsterdam Zoo. In reality, the last quagga was sent to the Museum of the Last Ones. (PROSE: The Last Dodo)

Effie Sutherland died. (PROSE: Warring States)

Behind the scenes
According to the "Earth-Skaro Timescale" of Terry Nation's Dalek Annual 1976, the Earth year 1883 is concurrent to Skaro-year 10,777.