firstDay

Change which day of the week is first on the calendar.

DateTime 1.0.0 This value represents which day of the week should be in the first column of datetime. The default value of 0 represents Sunday - the days are 0 indexed starting from Sunday: * 0 - Sunday * 1 - Monday * 2 - Tuesday * 3 - Wednesday * 4 - Thursday * 5 - Friday * 6 - Saturday This option allows for the "first" day to be changed to any of the days of the week as desired.