23 April (releases)

* 1966 - "The Final Test" was first broadcast on BBC1.
* 1966 - Part two of the TV Comic story The Trodos Tyranny was first published.
* 1977 - Part six of the TV Comic story The Fire Feeders was first published.
* 2001 - The novel The Squire's Crystal was published by Big Finish Productions.
* 2001 - The audio story Minuet in Hell was first published by Big Finish Productions.
* 2003 - The Mirror Effect, Dalek War: Chapter Three and Four were all released by Big Finish Productions.
* 2005 - World War Three was first broadcast on BBC One. Later, Why on Earth? aired on BBC Three. The final batch of entries were released on Have You Seen This Man?.
* 2009 - Part one of the Torchwood Magazine comic story Broken was first published.
* 2009 - DWA 112 was first released by BBC Magazines.
* 2011 - The Impossible Astronaut was broadcast on BBC One. Later, Coming to America aired on BBC Three and Doctor Who: Rewind on BBC America.
* 2011 - My Sarah Jane: A Tribute to Elisabeth Sladen aired on BBC Three.
* 2014 - DWA 344 was first released by Immediate Media Company London Limited.
* 2015 - DWA15 1 was first released by Panini Comics.
* 2015 - DWFC 44 was first released by Eaglemoss Collections.
* 2016 - Friend from the Future premiered during a football match's half time.
* 2019 - About Time 9 was released by Mad Norwegian Press.