To do Alt + h l h a on Mac in Excel, download and install Accelerator Keys, then press Option, followed by h, l, h, a.
Command: Highlight A Date Occuring
This is how to do Alt + h l h a on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.
Alt + h l h a creates a rule to highlight cells containing dates that match criteria like Yesterday, Today, Tomorrow, or Last Week.