23 February (releases)


 * 1974 - Part one of Death to the Daleks was first broadcast on BBC1.
 * 1974 - Part four of 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 - Doctor Who: Battles in TIme trading card set Annihilator was first released in the magazine Doctor Who: Battles in Time.
 * 2010 - Audio story The Last Voyage was first released by BBC Audio, as were the audio adaptations of the novelisations Doctor Who and the Dalek Invasion of Earth, Doctor Who and the Ice Warriors and Doctor Who and the Planet of the Spiders. An audio adaption of BBC Books novel Beautiful Chaos was also released by AudioGO, read by Bernard Cribbins.
 * 2012 - Doctor Who Adventures comic story The Fairest of Them All was first released in issue two hundred and fifty-seven.
 * 2013 - Puffin eshort The Nameless City was first released by Puffin Books.