It would be great to have an option to have the week start on Monday on both the main calender and the date picker.
This is a standard in large parts of the world (and it is actually an ISO standard, too).
I keep getting confused and making mistakes when the week starts on Sunday. While the main calendar at least has shades of grey for Sunday and Saturday, the date picker doesn't even have that.
Please understand that I don't want a mandatory Mon-Sun week for all, only an option.