7 November 1950: birth of Lindsay Duncan, who played Adelaide Brooke in The Waters of Mars (2009).
ii) broadcast anniversary
7 November 1964: broadcast of "Dangerous Journey", second episode of the story we now call Planet of Giants. Ian and Barbara are trapped inside the laboratory; the Doctor and Susan scale a drainpipe to rescue them but are themselves threatened by the water.
ii) date specified in canon
7 November 1987: Peter Tyler is killed crossing the road to a friend's wedding - oh no he isn't - oh yes he is - as seen in Father's Day (2005).