The 'Doctor Who' 50th anniversary special will broadcast simultaneously around the globe.
'Day of the Doctor' will be a 75-minute special and be simulcast on November 23 in at least 75 countries, including the UK, Brazil, Canada, US, Australia and Mexico.
Speaking about the simulcast, showrunner Steven Moffat said: "The Doctor has always been a time traveller - now he's travelling time zones. On the 23rd of November, it won't be the bad guys conquering the Earth - everywhere it will be 'The Day of the Doctor'!"
Tim Davie, chief executive of BBC Worldwide, added: "Few TV shows can still lay claim to being appointment viewing but 'Doctor Who' takes this to another level.
"In its 50th anniversary year, we wanted to create a truly international event for 'Doctor Who' fans in as many countries as possible and the simultaneous broadcast and cinema screening of the special across so many countries will make for a fitting birthday tribute to our Time Lord."
Meanwhile, UK cinemas will broadcast a 3D version of the episode at the same time it airs on TV, though further details on the big screen outing will be released in the coming weeks.
The episode will star Matt Smith, who plays the current titular Time Lord, former Doctors David Tennant and Peter Davison, Jenna-Louise Coleman, Billie Piper and John Hurt - and the network has also commissioned several other programmes to help mark the sci-fi show's special year.