Christmas (town)

Christmas was a level-2 human colony located on the planet Trenzalore, described by Tasha Lem as little more than a farming community. It contained a residual crack in space-time left behind after the Eleventh Doctor rebooted the universe. A Truth field was also present.

The town became the focus of universal attention due to a signal emanating from the crack in the Clock Tower. This signal eventually lead to the Siege of Trenzalore, in which the Doctor, alongside the Papal Mainframe, defended the town from Sontaran, Dalek, and Cyberman troops. (TV: The Time of the Doctor)