22 February (releases)


 * 1964 - "The Roof of the World" was first broadcast on BBC tv.
 * 1965 - The sixth and final part of the comic story The Therovian Quest was first published in the 689th issue of TV Comic.
 * 1969 - Episode five of The Seeds of Death was first broadcast on BBC1.
 * 1969 - Part four of the TV Comic story Martha the Mechanical Housemaid was first published.
 * 1975 - Part one of The Sontaran Experiment was first broadcast on BBC1.
 * 1975 - Part seven of the TV Comic story Death Flower was first published.
 * 1982 - Part three of The Visitation was first broadcast on BBC1.
 * 1983 - Part three of Terminus was first broadcast on BBC1.
 * 1997 - Part eight of the Radio Times comic story Perceptions was first published.
 * 2002 - Part two of "Planet of Blood" was first released online.
 * 2012 - DWDVDF 82 was first published by GE Fabbri Ltd.
 * 2016 - Infernal Devices was released by Big Finish.
 * 2017 - Part five of The Heralds of Destruction was first published in 3D 5.