Setting the DatePicker calendar to start on Sunday

Hi

For some countries the week start on different day then Monday like in Europe.
It will be very helpful if you could update the Date picker with an option to set the first day of the week.

Its make people mistake with the ordering when they used to find Sunday as the first day on the week instead of Monday like it is now.
Anyway the Date-picker is very helpful :)

Thanks
Eyal