20 September (releases)


 * 1975 - Part four of Terror of the Zygons was first broadcast on BBC1.
 * 1980 - Part four of The Leisure Hive was first broadcast on BBC1.
 * 1986 - Part three of The Mysterious Planet was first broadcast on BBC1.
 * 1989 - Part three of Battlefield was first broadcast on BBC1.
 * 2006 - The very first issue of Doctor Who: Battles in Time, including comic story Growing Terror, was first released by GE Fabbri Ltd.