21 November (releases)


 * 1964 - "World's End" was first broadcast on BBC1.
 * 1964 - Part two of The Klepton Parasites was first published in TV Comic.
 * 1970 - Part four of TV Comic story Trial of Fire was first published.
 * 1990 - Search Out Space was first broadcast on.
 * 1996 - The Plotters was first published by Virgin Books.
 * 2009 - Part one of Dreamland was first broadcast on BBC Red Button.
 * 2011 - Box set Doctor Who: The Complete Sixth Series was released in the UK on DVD and Blu-ray.