The problem is that different places outside the United States use different formats. Most Americans use the MM/DD/YY format, I use the MM/DD/YYYY format to help fix problems such as Y2K from happening in the future. Some places will use the nn/nn/nn format in some wait switching nn for either MM, DD, or YY. Recently though I have seen things with the DD/MM/YYYY and other variances... This is a good thing. I think we should just make a new backwards compatiable calendar, but the problem is it would have to many variables and would never be used, because some people like to stay ignorant and some just don't like change.