BBC America‘s countdown to its weeklong Doctor Who 50th anniversary celebration marches on with a new trailer for special Doctor Who: The Day Of The Doctor.

Matt Smith, David Tennant, Jenna Coleman, Billie Piper and John Hurt feature in the program which will be globally simulcast on November 23, Deadline said.

Doctor Who is a British science-fiction television programme produced by the BBC. The programme depicts the adventures of a Time Lord—a time-travelling humanoid alien known as the Doctor. He explores the universe in his TARDIS (acronym: Time and Relative Dimension in Space), a sentient time-travelling space ship. Its exterior appears as a blue British police box, which was a common sight in Britain in 1963 when the series first aired. Along with a succession of companions, the Doctor faces a variety of foes while working to save civilisations, help ordinary people, and right wrongs.