i) births and deaths

7 November 1950: birth of Lindsay Duncan, who played Adelaide Brooke in The Waters of Mars (2009).

ii) broadcast anniversaries

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.

7 November 2017: broadcast of The Zygon Inversion. With the splinter group of Zygons now ahead of the Doctor, there is only one thing standing in their way of obliterating the human race and taking the Earth for themselves: a moral dilemma! Is Bonnie willing to compromise the peace already in place, just for the sake of Zygons not needing to hide, even if it means making enemies not only of humanity but of her own race?

7 November 2021: broadcast of War of the Sontarans, Part 2 of Flux. Thrown back into the Crimean War, the Doctor finds the Light Division are about to enter senseless battle with… an army of Sontarans? Yaz and Dan are pulled away from her, and each find their task will be restoring Time. The Sontarans are ready for eternal conquest, and in the Temple of Atropos, the enemy has arrived to take it all.

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).