User:SOTO/Forum Archive/The Wikia Archives/@comment-216.165.251.187-20150920164837/@comment-1398253-20150925211604

Like I said, logically, that's true, it should be part of Series 8. But the production code indicates Series 9.

I've noticed another complication. Logically, The Day of the Doctor and The Time of the Doctor are series 7 episodes, especially since they feature Matt Smith as the main Doctor rather than Peter Capaldi (though he is in both episodes). Their production codes are not listed on their articles. Why is this? The reason I tried to check that, is that series 7 (due to airing across two years) had TWO Christmas specials, The Snowmen and Time - and thus if Time is 4.X, it would explain why Last Christmas has the 5.X code which seems to belong to series 9, despite being a series 8 episode. There's no way you can claim Time is part of Series 8!