23 February (releases)


 * 1974 - Part one of Death to the Daleks was first broadcast on BBC1.
 * 1974 - Part four of the TV Comic story The Disintegrator was first published.
 * 1982 - Part four of The Visitation was first broadcast on BBC1.
 * 1983 - Part four of Terminus was first broadcast on BBC1.
 * 1984 - Part one of Planet of Fire was first broadcast on BBC1.
 * 1985 - Both part two of The Two Doctors and the sketch A Fix with Sontarans were broadcast on BBC1.
 * 2007 - The Doctor Who: Battles in Time trading card set Annihilator was first released in the magazine Doctor Who: Battles in Time.
 * 2011 - DWDVDF 56 was first published by GE Fabbri Ltd.
 * 2012 - DWA 257 was first released by Panini Comics.
 * 2013 - The Puffin eshort The Nameless City was first released by Puffin Books.
 * 2017 - Casualties of War was released by Big Finish Productions.
 * 2020 - Ascension of the Cybermen was first broadcast on BBC One.