I went through support and couldn't find examples.
For Highcharts Stock is there support for extended hours for intraday charts? Normal stock market activity is 9:30 am - 4pm America/New_York time but there is premarket and after hours trading (also known as extended time). Most other stock charting software has the extended time feature. eg.
https://pasteboard.co/JxLfUkWEYzYA.png
I am using epochmilli data for the intraday chart and one idea I had was to create multiple rectangles spanning 4:01pm to 9:29 am. The rectangles will have a low zindex so they will be behind the chart and a low opacity.
Anyone have code examples of multiple stationary rectangles set using epochmilli?