View source for 21 November (releases) | Tardis

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* [[1964 (releases)|1964]] - "[[World's End]]" was first broadcast on [[BBC1]]. For the first time, a ''[[Doctor Who]]'' episode featured extensive [[location filming]] and also the return of a previously seen foe. It was also the first story to incorporate widely known London landmarks (like [[Big Ben]], the [[Houses of Parliament]] and the [[Battersea Power Station]]), despite being set in the future.
* [[1970 (releases)|1970]] - Part four of the ''TV Comic'' story ''[[Trial of Fire (comic story)|Trial of Fire]]'' was first published.
* [[1974 (releases)|1974]] - [[Doctor Who and the Abominable Snowmen (novelisation)|The novelisations of ''The Abominable Snowmen'']] was first published by [[Target Books]].
* [[1990 (releases)|1990]] - ''[[Search Out Space]]'' was first broadcast on {{w|BBC Schools}}.
* [[1991 (releases)|1991]] - ''[[The Terrestrial Index]]'' was first published by [[Doctor Who Books]].
* [[1996 (releases)|1996]] - ''[[The Plotters (novel)|The Plotters]]'' was first published by [[Virgin Books]].
* 1996 - ''[[The Third Doctor Handbook]]'' was first published by Doctor Who Books.
* 1996 - [[DWM 246]] was first released by [[Marvel Comics]].
* [[2003 (releases)|2003]] - ''[[Children in Need 2003 (TV story)|Children in Need 2003]]'' was first broadcast on BBC One, as part of the ''[[Children in Need]]'' telethon.
* 2003 - The audio stories ''[[Zagreus (audio story)|Zagreus]]''<ref>{{cite web|url=https://web.archive.org/web/20040312230506/http://www.bigfinish.com/news/news_031121_zagreusishere.shtml|title=Happy 40th! Zagreus is Here!|website name=Big Finish, via Internet Archive|accessdate=12 March 2004}}</ref> and ''[[Shada (audio story)|Shada]]''<ref>{{cite web|url=https://web.archive.org/web/20041019034752/http://www.bigfinish.com/news/news_031121_shadareleased.shtml|title=Shada is Released|website name=Big Finish, via Internet Archive|accessdate=19 October 2004}}</ref> were released by [[Big Finish Productions]].
* [[2005 (releases)|2005]] - ''[[Series 1 (Doctor Who)|The Complete First Series]]'' was released on [[Region 2]] [[DVD]].
* [[2009 (releases)|2009]] - Part one of ''[[Dreamland (TV story)|Dreamland]]'' was first broadcast on [[BBC Red Button]].
* [[2011 (releases)|2011]] - The box set ''[[Series 6 (Doctor Who)#DVD|Doctor Who: The Complete Sixth Series]]'' was released in the [[UK]].
* [[2013 (releases)|2013]] - ''[[An Adventure in Space and Time (TV story)|An Adventure in Space and Time]]'' was first broadcast on [[BBC Two]].
* 2013 - ''[[Nothing O'Clock (short story)|Nothing O'Clock]]'' was first published by [[Puffin Books]].
* 2013 - [[DWFC 7]] was first published by [[Eaglemoss Publications Ltd]].
* [[2015 (releases)|2015]] - ''[[Face the Raven (TV story)|Face the Raven]]'' was first broadcast on [[BBC One]].
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[[cy:21 Tachwedd (rhyddhadau)]]