How to change RadDatePicker culture

1. Set culture property

telerik:RadDatePicker ID="RadDatePicker1" runat="server" Culture="en-GB" ...>
   ...
/telerik:RadDatePicker>

2. Change date format when u save  RadDatePicker value

 private string  DateVAlue( Telerik.Web.UI.RadDatePicker d)
    {
        if (d.SelectedDate != null)
        {
            DateTime  d1 =(DateTime ) d.SelectedDate;

            return d1.ToString("yyyy-MM-dd HH:mm");
        }
        else
            return null ;

    }