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"

December

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

Unknown date

 * Arthur Blake, who played Hrhoonda in "The Web Planet," is born in Altoona, Pennsylvania.