CHANGE FIRST DAY OF WEEK IN CALENDAR ELEMENT
Here it is explained how to make Monday the first day of week in Calendar element with date format "%Y-%m-%d".
Go to form Advance Options > More Options > Scripts > Initialization Script > Custom > Press "Create Code framework" and paste this in between :
Calendar.setup({ inputField : "ff_elem1717", ifFormat : "%Y-%m-%d", button : "ff_elem1717_calendarButton", align : "Bl", singleClick : true, firstDay: 1 });
The whole code will look like this:
function ff_formName_init() { Calendar.setup({ inputField : "ff_elem1717", ifFormat : "%Y-%m-%d", button : "ff_elem1717_calendarButton", align : "Bl", singleClick : true, firstDay: 1 }); } // ff_formName_init
NOTE: To make this work for your form you have to find your calendar element ID and replace ff_elem1717 with it. Also, you have to replace ff_elem1717_calendarButton with your calendarButton ID. Also, formName will be the name of your form.
The first day of week can be set to what is suitable by changing firstDay: 1 to another value.