12 July 1933: birth of Brian Cant, who I knew as one of the great BBC children's presenters of the 1970s but before then had appeared in The Daleks' Master Plan (1965) as Kert Gantry and The Dominators (1968) as Tensa.
12 July 1980: birth of Tom Price (PC Andy in Torchwood).
12 July 1995: death of Gordon Flemyng, director of Dr. Who and the Daleks (1965) and Daleks' Invasion Earth: 2150 A.D. (1966)
ii) broadcast anniversaries
iii) date almost specified in story
12 July 1966: It is roughly about this date that WOTAN starts getting active in The War Machines (1966) - four days before "C-Day". But more of that on Friday..