2 September (releases)


 * 1967 - Episode one of The Tomb of the Cybermen was first broadcast on BBC1.
 * 1971 - Part one of Backtime was first published in Countdown.
 * 1978 - Part one of The Ribos Operation was first broadcast on BBC1.
 * 1997 - Down was first published by Virgin Books.
 * 2010 - The Relics of Time was first released by AudioGO.