8 February 1964: broadcast of "The Edge of Destruction", first episode of the story we now also call The Edge of Destruction. The Tardis behaves strangely after an explosion; so does Susan who attacks Ian with scissors.
8 February 1969: broadcast of third episode of The Seeds of Death. The Doctor is captured by the Ice Warriors; Jamie and Zoe turn up the heating in the Moonbase.
8 February 1973: broadcast of third episode of The Ark in Space. The Doctor helps the humans to fight back against the Wirrn, but is confronted by the completely transformed Noah.
8 February 1982: broadcast of third episode of Kinda. Todd and the Doctor escape the deluded Hindle and Sanders, and join forces with Panna to try and hold back the Mara.
8 February 1983: broadcast of third episode of Mawdryn Undead. Mawdryn begs the Doctor to give him and his colleagues his remaining regenerations.
8 February 1984: broadcast of first part of Resurrection of the Daleks. The Daleks are attempting to rescue Davros, in a plan involving a time tunnel and the London Docklands.
This is the third of seven dates of the year on which six episodes of Old Who were broadcast (the previous two, which I forgot to note last month, were 5 January and 12 January). Today week, 15 February, is the fourth such date.