You've probably heard by now of the official 2018 Doctor Who calendar. You may even have bought it from one of those calendar stores that frequent shopping centres this time of the year.
You will definitely have noticed one or two little 'errors' that have made it past the licencing department at the BBC. Notably the third Doctor quote, in which a demand for obedience is attributed to the heroic Time Lord when it was actually said by his arch nemesis, the Master.
There's also a modern 2015 Zygon on the fourth Doctor page.
This is unacceptable.
I thought I could do better. Though it seems that producing an error-free officially licenced calendar is more
difficult than it appears...