'Doctor Who' 50th anniversary: 'Day of the Doctor' trailer released - Watch

The time is drawing even closer. Soon enough "The Day of The Doctor" will arrive as "Doctor Who" celebrates its 50th anniversary. The BBC has released the first trailer from the special 75-minute episode.

The trailer doesn't contain any actual footage from the special, but is a nice look back at each of the Doctors, set to a voice over of Matt Smith's 11th Doctor talking about "the day I've been running from all my life. The day of the Doctor." The trailer also reintroduces several iconic "Who" baddies, from Daleks to the Ood.

It's still unclear exactly what the day of the Doctor is, but the special episode features Smith, along with returning Doctor David Tennant. Then there's John Hurt, playing what's being called the dark Doctor. Three Doctors on one episode should make for some happy Whovians.

"The Day of the Doctor" airs November 23 on BBC America.

Photo/Video credit: BBC