On 13 March, a number of things set in or relevant to the Doctor Who universe were released or published.
- 1965 - "Invasion" was first broadcast on BBC1.
- 1965 - The fifth part of the TV Century 21 comic story Power Play was first published.
- 1971 - Episode one of The Claws of Axos was first broadcast on BBC1.
- 1971 - Part four of Gemini Plan was first published in Countdown.
- 1975 - The novelisation of Robot was first published by Target Books.
- 1976 - Part seven of the TV Comic story Virus was first published.
- 1980 - DWM 23 was released by Marvel Comics.
- 1986 - The novelisation of The Twin Dilemma was first published by Target Books.
- 1986 - DWM 111 was released by Marvel Comics.
- 1997 - DWM 250 was released by Marvel Comics.
- 2008 - Part two of the Doctor Who Adventures comic story Reign of the Stone Monkey was first published.
- 2008 - Something New aired on BBC Three.
- 2009 - From Raxacoricofallapatorius with Love was first broadcast as part of Comic Relief's Red Nose Day.
- 2012 - The video game Worlds in Time was first officially released by BBC Worldwide.
- 2012 - The Face of Evil was released on Region 1 DVD.
- 2014 - Starborn and Adorable Illusion were first released by Big Finish.
- 2015 - Requiem for the Rocket Men was first released by Big Finish.
- 2015 - Toby Hadoke's Who's Round 111 was released online.
- 2019 - The Comic Strip Adaptations: Volume One was first released by Big Finish.