i) births and deaths

6 June 2020: death of Malcolm Terris, who played Etnin in The Dominators (Second Doctor, 1968) and the Co-pilot in The Horns of Nimon (Fourth Doctor, 1980)

ii) broadcast anniversaries

6 June 1965: broadcast of "The Bride of Sacrifice", third episode of the story we now call The Aztecs. The Doctor gets engaged to Cameca.

6 June 1970: broadcast of fifth episode of Inferno. Now that the parallel Earth's crust has been penetrated, earthquakes are felt everywhere, and the Primords mass to attack.

6 June 2003: webcast of sixth episode of Shada. The Doctor and Romana defeat Skagra, and Romana pardons Professor Chronotis/Salyavin.