13 September (releases)


 * 1969 - Part two of the TV Comic story The Brotherhood was first published.
 * 1975 - Part three of Terror of the Zygons was first broadcast.
 * 1975 - Part one of the TV Comic story The Sinister Sea was first published.
 * 1980 - Part three of The Leisure Hive was first broadcast on BBC1.
 * 1984 - DWM 93 was first released by Marvel Comics.
 * 1986 - Part two of The Mysterious Planet was first broadcast on BBC1.
 * 1989 - Part two of Battlefield was first broadcast on BBC1.
 * 2007 - Part one of the Doctor Who Adventures comic story Shipwreck! was first published.
 * 2010 - The Cradle of the Snake, Project: Destiny, The Book of Kells, Find and Replace and Resurrecting the Past were all released by Big Finish Productions.
 * 2012 - Exodus Code was first published by BBC Books.
 * 2012 - The Doctor Who Adventures comic story Planet of the Rorys was first published.
 * 2014 - Listen was first broadcast on BBC One.
 * 2019 - Sheffield Steel: Essays on the Thirteenth Doctor was first published by Arcbeatle Press.