Can we use Gregorian dates together with a Georgian to Persian date converter script to show Persian dates in Highchart and Highstock?
I developed a Jalali Date library, JDate, that is compatible with original javascript Date class. Dates in highchart/highstock charts can be converted to Jalali by replacing window.Date with JDate. With this method all date outputs is converted to jalali calendar, And also, date input features (like YTD feature, or range selector) works with jalali calendar.
Demo: https://tahajahangir.github.io/jdate/jalali-highcharts-demo.html

The main part of script in above demo, is: