1915

History of the Doctor Who Universe

 * Albert Einstein publishes his general theory of relativity, which the Fourth Doctor discusses with Professor Amelia Rumford ("The Stones of Blood").


 * April - May - The Doctor is wounded at Gallipoli ("The Sea Devils").


 * 7th May - The RMS Lusitania is torpedoed by a German U-boat ("The Sirens of Time").


 * August - "White Darkness"

September

 * 15 - John Witty (the voice of the Computer in The Seeds of Death) is born in Bristol.

December

 * 21 - James Cairncross, who playe Lemaitre in "The Reign of Terror" and Beta in "The Krotons," is born in Dunfermline, Fife, Scotland.