Americanisation annoys the hell out of me! Day/Month/Year is the sensible, normal, perfectly-fine way of doing it.
Seriously, when America declared its independence, did they all think "I know what'll annoy the Brits more than breaking off from them and fighting a war against them! Let's fuck around with everything! Destroy all calendars! We'll make our own! English isn't efficient enough! Let's take out half the letters and change words, then add 'American' to the beginning, which instantly makes it better!"
If so, they were right. Its so much more annoying than simply declaring independence.
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Just one of my pet hates.