5 February

On 5 February 1811, the British Regency began when King George III lapsed into "permanent madness." (PROSE: The Adventuress of Henrietta Street, AUDIO: Frostfire)

In 1814, the Twelfth Doctor and Bill Potts set free a creature that lived under the Thames. (TV: Thin Ice)

In 8891, the Ellarchon Dyson Sphere collapsed. (PROSE: Time Traveller's Diary)