The Doctor Who Production Diary: May 20th

1926 Birth of John Lucarotti (bio), writer
1963 The current draft of the Doctor Who format guide is submitted to the Controller of Programmes for BBC One, Donald Baverstock, who indicates his approval The First Doctor
1964 Sydney Newman suggests that Doctor Who should be cancelled if satisfactory studio facilities cannot be found for the programme; it is soon agreed that Riverside Studio 1 will be the show's new production home The First Doctor
1966 Death of Mervyn Pinfield (bio), associate producer and director
1966 Recording for The Savages takes place at Riverside Studios 1 in Hammersmith, London The Savages
1967 Recording for The Evil Of The Daleks takes place at Lime Grove Studio D in Shepherd's Bush, London The Evil Of The Daleks
1967 Debut broadcast of The Evil Of The Daleks episode one on BBC One The Evil Of The Daleks
1971 Bob Baker and Dave Martin are commissioned to write the first episode of The Mutants The Mutants
1972 Debut broadcast of The Time Monster episode one on BBC One The Time Monster
1975 Recording for Pyramids Of Mars takes place at BBC Television Centre Studio 3 in White City, London Pyramids Of Mars
1977 Death of Lennie Mayne (bio), director
1980 Recording for State Of Decay takes place at the BBC Visual Effects Workshop in Acton, London State Of Decay
1981 Recording for The Visitation takes place at BBC Television Centre Studio 3 in White City, London The Visitation
1982 Birth of Jessica Raine (bio), who played Verity Lambert
1996 Birth of Jon Pertwee (bio), who played the Third Doctor
2006 Debut broadcast of The Age Of Steel on BBC One Rise Of The Cybermen / The Age Of Steel
2008 The BBC announces that Steven Moffat will become the new executive producer and showrunner of Doctor Who as of Season Thirty-One The Tenth Doctor
2009 Recording for The End Of Time takes place at Upper Boat Studios in Upper Boat, Wales The End Of Time
2014 Recording for Kill The Moon takes place in Cardiff, Wales Kill The Moon
2014 Recording for Mummy On The Orient Express takes place in Cardiff, Wales Mummy On The Orient Express
2015 Recording for The Zygon Invasion / The Zygon Inversion takes place at Roath Lock Studios in Cardiff, Wales The Zygon Invasion / The Zygon Inversion
2017 Debut broadcast of Extremis on BBC One and BBC One HD Extremis