Here in the UK, it's written dd/mm/yy. So I guess our last one was the 9th November 2013, right?
However, I think it's bollocks because the year is in fact 2015, not 15. So that day was 2000 years ago.
Strange things do happen when you're working with large sets of numbers. Last week I was doing a budget projection for next year in my personal finances--at one point during the number crunching "1792" came up on the calculator screen. I still wonder whether I should have taken that as a portent...