20 November (releases)


 * 1965 - "Day of Armageddon" was first broadcast on BBC1.
 * 1965 - Part four of TV Comic story Enter: The Go-Ray was first published.
 * 1971 - Part one of The Eternal Present was first published in Countdown.
 * 1975 - The novelisation of The Three Doctors was first published by Target Books.
 * 1975 - The Doctor Who Monster Book was first published by Target Books.
 * 1976 - Part four of TV Comic story Double Trouble was first published.
 * 1976 - Part four of The Deadly Assassin was first broadcast on BBC1.
 * 2008 - Part two of Doctor Who Adventures comic story Time Flies was first published.