(重定向自15 April (releases))
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On 4月15日, 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 - DWA 162 was first released by BBC Magazines.
- 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 was first released digitally by Titan Comics.
- 2015 - The large print edition of The Story of Fester Cat was published by Thorndike Press.
- 2015 - Doom of the Daleks was released by Cubicle 7.
- 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.