Export column string as date to xlsx

Hello!

I'm using the html5export button to export my datatable data which is supplied via dom to and xslx. This works great except when I open the excel document and try to format the column which contains my dates it does not work. This seems to be because excel thinks the column is a string.

However, when I double click on a cell in the column in excel, the date string goes from left aligned to right aligned (which is why I think excel thinks this column is a string format) and then when I try to format that cell with a date format, everything works fine.

Is there a way to explicitly tell datatables, when exporting data, make sure this column is formatted as a date in the xlsx document?

Thanks!