First day of the week

Here in Australia, the the first day of the week is Sunday. The calendar in Elementary 8 has Monday as the first day of t he week. There is no way to change the first day of the week to suit the locality. This is a serious defect. In Windows, there is a menu with a drop-down box to set the first day of the week. Why is this feature missing from Elementary 8. Can you please add this feature in future updates, as there are a lot of people who have this same problem, with the first day of the week not matching their location. Thanks