Christopher Eccleston was 48 in Doctor Who: The Day of the Doctor when he played the character 'The Doctor (9) (archive footage)'.
That was over 10 years ago in 2013.
Today he is 60, and has starred in 65 movies in total, 16 of those since Doctor Who: The Day of the Doctor was released.
In Doctor Who: The Day of the Doctor, I think Christopher Eccleston looks: