27 Feb 2013 is unambiguous- regardless of where you're from or how you write your dates, you can't confuse 2013 for the month or day, you can't confuse Feb for a day or week, and if you can't figure 27 out, then we have bigger problems!

The grid on the right just shows you all your options.

The list on the left obscures some of your options behind a scroll down, which you will then realize you actually have to scroll back up for!