Back in 2010 I skipped this date. It was the right call then, but there are two broadcast anniversaries from the last ten years, a renegeration filming (which I will track going forward) and an actor who has made a second appearance in the Whoniverse.

i) births and deaths

3 October 1960: birth of Kevin Eldon, who played Antimony in the peculiar animation Death Comes to Time (Seventh Doctor, 2001-02) and Ribbons of the Seven Stomachs in It Takes You Away (Thirteenth Doctor, 2018).

ii) broadcast and production anniversaries

3 October 2011: broadcast of first episode of Sky, starting the last series of the Sarah Jane Adventures, and introducing new regular character Sky, an artificial child who becomes a regular character.

3 October 2013: filming of the regeneration scene between the Eleventh and Twelfth Doctors.

3 October 2015: broadcast of Under the Lake. The Doctor and Clara arrive at an underwater base which is haunted by ghosts.