On 15 April, a number of things set in or relevant to the Doctor Who universe were released or published.
- 1967 - Episode two of The Faceless Ones was first broadcast on BBC1.
- 1967 - Part two of the TV Comic story Master of Spiders was first published.
- 1972 - Episode two of The Mutants was first broadcast on BBC1.
- 1972 - Part seven of the TV Action comic story The Planet of the Daleks was first published.
- 1978 - Part two of the TV Comic story Guardian of the Tomb was first published.
- 1982 - The novelisation of Warriors' Gate was first released by Target Books.
- 1983 - The novelisation of Time-Flight was first released by Target Books.
- 1993 - Deceit was first published by Virgin Books.
- 1993 - The graphic novel The Mark of Mandragora was first published by Virgin Books.
- 1993 - DWM 199 was first released by Marvel Comics.
- 2006 - New Earth was first broadcast on BBC One. Later, New New Doctor aired on BBC Three.
- 2006 - Tardisode 2 was released online.
- 2006 - The Ship of a Billion Years was first released by Magic Bullet Productions
- 2009 - The Doctor Who: Battles in Time comic story The Rebirth of Corah was first published.
- 2010 - The Doctor Who Adventures comic story Madness on the M1! was first published.
- 2010 - Part one of the Torchwood Magazine comic story Shrouded was first published.
- 2010 - DWMSE 25 was first released by Panini Comics.
- 2015 - The P.R.O.B.E. story When to Die was released on DVD.
- 2015 - Issue 9 of Doctor Who: The Tenth Doctor, which included the comic stories, The Weeping Angels of Mons part four and A Rose by Any Other Name part six, was first published by Titan Comics.
- 2016 - Toby Hadoke's Who's Round 165 was released online.
- 2017 - The Pilot was first broadcast on BBC One.
- 2020 - Cry of the Vultriss was first released by Big Finish.
- 2020 - The Shadow Passes was released on the Doctor Who website.