17 December (releases)

* 1966 - Episode one of The Highlanders was first broadcast on BBC1.
* 1966 - Part four of the TV Comic story The Experimenters was first published.
* 1977 - Part four of The Sun Makers was first broadcast BBC1.
* 1977 - Part five of the TV Comic story The Aqua-City was first published.
* 1993 - UNIT Recruiting Film was first broadcast on BBC One, alongside a repeat airing of the final episode of Planet of the Daleks.
* 1998 - DWM 273 was first released by Marvel Comics.
* 2001 - The audio story The One Doctor was first released by Big Finish Productions.
* 2006 - Out of Time was first broadcast on BBC Three.
* 2009 - DWA 146 was first released by BBC Magazines.
* 2009 - Part five of the Torchwood Magazine comic story Broken was first published.
* 2009 - Part one of The Doctor on My Shoulder was first published online.
* 2010 - Parts three and four of Snowfall was first published online.
* 2012 - Vastra Investigates: A Christmas Prequel was released online.
* 2013 - Afterlife and Trial of the Valeyard were first released by Big Finish.
* 2014 - The Rani Elite was first released by Big Finish.
* 2014 - Issue 5 of Doctor Who: The Tenth Doctor was first released digitally by Titan Comics.
* 2014 - Toby Hadoke's Who's Round 95 was released online.
* 2015 - Toby Hadoke's Who's Round 151 was released online.
* 2015 - DWMSE 42 was first released by Panini Comics.
* 2015 - DWFC 61 was first released by Eaglemoss Collections.
* 2019 - The War Master audio anthology Anti-Genesis was first released by Big Finish.
* 2020 - The Torchwood audio story The Crown was first released by Big Finish.