The Special will air in its traditional slot, on Christmas Day at 6.15pm on BBC One. That's earlier than last year's 7.30pm start, but later than The Snowmen's early 5.15pm start in 2012. Last Christmas, written by head writer Steven Moffat, will last for 60 minutes and finishes at 7.15pm.
The Doctor and Clara face their last Christmas. Trapped on an arctic base, under attack from terrifying creatures, who are you going to call? Santa Claus![Source: BBC]