15 January 1966: broadcast of "Escape Switch", tenth episode of the story we now call The Daleks' Master Plan. The Daleks take Steven and Sara hostage and force the Doctor to hand over the taranium core. But the Doctor steals the directional unit from the Monk's Tardis.
15 January 1972: broadcast of third episode of Day of the Daleks. The Doctor travels to the future, is captured by the controller and the Daleks, and subjected to mind analysis (summoning images of the First Doctor and Second Doctor).
15 January 1979: broadcast of third episode of The Face of Evil. The Doctor and Leela are captured by the Tesh and narrowly escape being subjected to particle analysis (disintegration); the Doctor confronts the mad computer Xoanon.