Quick Question

So, do I have to watch Children of Earth before I can watch The End of Time?

I'm only a little bit spoiled for CoE, but that was enough that I haven't really been eager to watch it, y'know? But something was mentioned in an article about the #biggaybattle about Barrowman and the end of The End of Time and Gareth David-Lloyd makes me think I should maybe be watching things in the order they came out. Y/N?