I see cckerberos has answered flapcats question, but still–“math skills”? Math has little to do with it, I think.
And Mangetout has a good point, I think. I would sooner put the month before the day, for all sorts of reasons. And the year before them–unfortunately, both systems in contention put it last.
Silly nitpick: it is my impression that Americans tend to exclude the highlighted ‘and’.
Needless to say, this is just another area (aluminium, couldn’t care less, etc) where most people on either side think that most people on the other side are just being obtuse.