22 February (releases)


 * 1964 - "The Roof of the World" was first broadcast on BBC tv.
 * 1969 - Episode five of The Seeds of Death was first broadcast on BBC1.
 * 1975 - Part one of The Sontaran Experiment was first broadcast on BBC1.
 * 1982 - Part three of The Visitation was first broadcast on BBC1.
 * 1983 - Part three of Terminus was first broadcast on BBC1.
 * 2002 - Part two of WC: "Planet of Blood" was first released.
 * 2010 - The Fall of the House of Gryffen was first broadcast on Disney XD.