31 October (releases)

* 1964 - "Planet of Giants" was first broadcast on BBC1, beginning season 2 of Doctor Who.
* 1970 - Part one of the TV Comic story Trial of Fire was first published.
* 1985 - Timeview was first published by Who Dares Publishing.
* 1991 - DWM 180 was first released by Marvel Comics.
* 2003 - The audio stories Master and The Wormery were first released by Big Finish Productions.
* 2007 - The Doctor Who: Battles in Time comic story House Pests was first published.
* 2008 - The Diet of Worms was first released by Big Finish.
* 2008 - Sisters of the Flame was broadcast on BBC Radio 7.
* 2009 - Regeneration was first broadcast on Disney XD, beginning the K9 series.
* 2011 - The Gunpowder Plot was first released by BBC Wales Interactive.
* 2011 - The Blu-ray box set The Sarah Jane Adventures: The Complete Fourth Series was released in the UK.
* 2012 - DWDVDF 100 was first published by GE Fabbri Ltd.
* 2014 - The Widow's Assassin was first released by Big Finish.
* 2015 - The Zygon Invasion was first broadcast on BBC One.
* 2017 - The Ultimate Foe was first published by Obverse Books.
* 2018 - TCH 16 was first released by Hachette Partworks.
* 2019 - DWFC 162 was first released by Eaglemoss Collections.
* 2021 - The Halloween Apocalypse was first broadcast on BBC One, launching Doctor Who: Flux.
* 2023 - the Whoniverse ident was first released on social media platforms.