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On 4月22日, a number of things set in or relevant to the Doctor Who universe were released or published.
- 1967 - Episode three of The Faceless Ones was first broadcast on BBC1.
- 1967 - Part three of the TV Comic story Master of Spiders was first published.
- 1971 - Part five of Timebenders was first published in Countdown.
- 1972 - Episode three of The Mutants was first broadcast on BBC1.
- 1972 - Part eight of the TV Action comic story The Planet of the Daleks was first published.
- 1978 - Part three of the TV Comic story Guardian of the Tomb was first published.
- 2006 - Tooth and Claw was first broadcast on BBC One. Later, Fear Factor aired on BBC Three. Tardisode 3 was released online.
- 2009 - DWDVDF 8 was first published by GE Fabbri Ltd.
- 2010 - Apollo 23, Night of the Humans and The Forgotten Army were first published by BBC Books.
- 2010 - DWA 163 was first released by BBC Magazines.
- 2010 - Pocket Essentials: Doctor Who was first published by Pocket Essentials.
- 2014 - The Web of Fear was released on Region 1 DVD.
- 2015 - Issue 11 of Doctor Who: The Tenth Doctor, which included the comic stories The Fountains of Forever part one and A Rose by Any Other Name part eight, was first published by Titan Comics.
- 2016 - Toby Hadoke's Who's Round 166 was released online.
- 2017 - Smile was first broadcast on BBC One.
- 2020 - The New Counter-Measures audio stories The Movellan Manoeuvre and The Dalek Gambit were first released by Big Finish Productions.
- 2020 - The Simple Things was first released on the Doctor Who website.