On 20 May, a number of things set in or relevant to the Doctor Who universe were released or published.
- 1967 - Episode one of The Evil of the Daleks was first broadcast on BBC1.
- 1967 - Part three of the TV Comic story The Exterminator was first published.
- 1972 - Episode one of The Time Monster was first broadcast on BBC1.
- 1972 - Part four of the TV Action comic story A Stitch in Time was first published.
- 1976 - The novelisation of Revenge of the Cybermen was released by Target Books.
- 1978 - Part seven of the TV Comic story Guardian of the Tomb was first published.
- 1982 - The novelisation of The Keeper of Traken was first released by Target Books.
- 1993 - Lucifer Rising was first published by Virgin Books.
- 2002 - The Ambassadors of Death was released on VHS.
- 2004 - The anthology Short Trips: Past Tense was first published by Big Finish.
- 2006 - The Age of Steel was first broadcast on BBC One. Later, From Zero to Hero aired on BBC Three. Also, Tardisode 7 was released online.
- 2009 - The anthology Iris Wildthyme and the Celestial Omnibus was first published by Obverse Books.
- 2009 - DWDVDF 10 was first published by GE Fabbri Ltd.
- 2010 - The Doctor Who Adventures comic story Track Attack was first published.
- 2013 - The box set Doctor Who: Series 7, Part 2 was released in the UK.
- 2015 - The first part of Titan Comics' comic story Conversion was first published.
- 2015 - The Titan Comics comic story Bow-ties for Goal Posts was first published.
- 2015 - Last of the Cybermen was first released by Big Finish.
- 2016 - Toby Hadoke's Who's Round 170 was released online.
- 2017 - Extremis was first broadcast on BBC One.
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