[slazaro]

I think I recall a discussion about this early on, on the thread for the game on TIGSource. I think he asked what would be the best way to write down the date in numerical format without being ambiguous, given that different places swap day and month. I think he ended up using YYYY/MM/DD because when you start with a year, the other two are usually interpreted as month and day. I think he only wanted to use one format, that was way before all of these localization headaches. He probably left it like that after localization because he didn't want to create more problems.