3 December

On 3 December 1952, the Third Doctor and Sarah Jane began an undercover operation to bust up Tommy Ramsey's mafia-esque grip on London and to ward off a Xhinn invasion. It was also the day Ramsey was released from prison only to find that rival gangs were moving into the East End where he and his gang had established a successful protection racket prior to his incarceration. (PROSE: Amorality Tale)

According to a calendar on the Snowcap base, 3 December 1986 was a Wednesday. (TV: The Tenth Planet)

According to files accessed by Toshiko Sato, Ed Morgan was admitted to a mental asylum on this day in 1989. He was diagnosed with severe depression and agoraphobia and was finally released on 17 January 1990. (TV: Ghost Machine)