bootstrap Date Range Picker get day name code example
Example: bootstrap date range picker get start date
$('#IDOfDateRangePicker').data('daterangepicker').startDate;
$('#IDOfDateRangePicker').data('daterangepicker').endDate;
$('#IDOfDateRangePicker').data('daterangepicker').startDate;
$('#IDOfDateRangePicker').data('daterangepicker').endDate;