It's not obvious to non US citizens when the day portion is 12 or lower. I've lost count of the number of times I'm left scratching my head over what the actual date is. This isn't just an Apple problem, but there are apps, Apple apps, that are not following the date convention of the country that the you have set the device to - so it should know. I'm in the UK and the Notes app on the iPhone dates all the notes using the US format. Very confusing and annoying.