The Doctor Who 50th Anniversary Special is less than a month away and cinema screenings are selling out both stateside and across the pond.

While the 75-minute episode will be simulcast worldwide to over 75 countries, some fans will get the chance to see the "The Day of the Doctor" on the big screen.

One-off showings will take place in RealD 3D on Nov. 23 at theaters in New York, Los Angeles, Chicago, Philadelphia, Seattle, Washington, D.C., San Francisco, Dallas, Houston, Atlanta and Minneapolis, according to the Los Angeles Times. On Nov. 25, 300 other theaters will also feature the episode.

Tickets went on sale Friday morning and, while Hero Complex reports that there are still seats for U.S. Nov. 23 showings, some U.K. viewers are having a bit of difficulty getting their hands on passes. Theaters quickly sold out while buyers dealt with site crashes and postpond sales, according to the Radio Times.

The long-awaited episode will feature the return of David Tennant as the 10 th Doctor and Billie Piper as his first companion, Rose Tyler. Tennant will play alongside the current Doctor (Matt Smith) and the Unnumbered Doctor (John Hurt).

According to executive producer Steven Moffat, Smith and Tennant enjoyed working together and it is something that will show onscreen.

"The double act between them is sublime," Moffat said, according to the Radio Times. "It's one of those happy accidents -- there's no reason why they should be, but they are absolutely adorable and hilarious together."

Smith and Tennant seemed to have such a good experience filming for "The Day of the Doctor" that they weren't ready for it to end.

"By the end of it, Matt told me that he'd worked out this plan that they'd both continue in 'Doctor Who': do five individual episodes each and three together -- would that be OK?" Moffat recalled. "It was a nice plan. I think if I'd said yes they'd have gone for it."

Smith will be replaced as the Doctor by Peter Capaldi during the Dec. 25 Christmas Special.

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Doctor Who, BBC, Television