<Tr> <Td> "The Name of the Doctor" "The Night of the Doctor" and "The Last Day" (mini episodes) </Td> <Td> "The Time of the Doctor" </Td> </Tr> <Tr> <Td_colspan="2"> List of Doctor Who serials </Td> </Tr> <P> "The Day of the Doctor" is a special episode of the British science fiction television programme Doctor Who, marking the programme's 50th anniversary . It was written by Steven Moffat, an executive producer alongside Faith Penhale . It was shown on BBC One on 23 November 2013, in both 2D and 3D . The special was broadcast simultaneously in 94 countries, and was shown concurrently in 3D in some cinemas . It achieved the Guinness World Record for the largest ever simulcast of a TV drama and won the Radio Times Audience Award at the 2014 British Academy Television Awards . </P> <P> The 77 - minute episode shows the last day of the Time War, in which the War Doctor (John Hurt) chooses to kill both Daleks and his own race of Time Lords to end the destructive conflict, paralleling this with a present - day choice by paramilitary organisation UNIT to destroy London rather than allow an alien invasion . Revising the back story, the Doctor succumbs to Clara Oswald's plea to change his mind; and instead, at the last instant of the Time War, he hides his war - torn home planet in time, rather than destroy it . Unfortunately the time distortions incurred causes all but his latest incarnation to have no memory of his changed decision . </P>

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