Doctor Who: 20 Things You Didn't Know About The Day Of The Doctor
9. Why It's Called The Day Of The Doctor
Coming up with the title for any Doctor Who episode must be a difficult task, but coming up with the title for the 50th anniversary special? That's a whole other level of pressure.
During development, the special was known as The Time War, until the official title was announced on 11 September 2013.
Moffat explained his choice of title to SFX magazine:
"It's very rare in Doctor Who that the story happens to the Doctor. It happens to people around him, and he helps out - he's the hero figure who rides in and saves everybody from the story of the week. He is not the story of the week. In this, he is the story of the week. This is the day of the Doctor."