Sorting invisible subpages by date in the Panel

I want to sort subpages of blog by date so last article should be first.

There is an option about sorting by date like following but this option only for visible pages.

pages: 
    num:
        mode: date
        field: created
        format: YmdHi

Expected sample option blueprint for sorting subpages:

title: Blog
pages:
    sort:
        mode: date
        field: created
        format: YmdHi
        order: desc

Is this so useful and easy to find last or first entry?

Thanks

The Panel sorting is always alphabetical based on the folder names. By using dates as sorting numbers, the pages are also sorted by the date in the file system. That’s not possible with invisible pages.

Folders have creation and modified date. This fields not available? Like that filemtime function

Fields here refers to a field in the text file. Information from the file system is not available.