Entering todays date using the Islamic/Hijri calendar

Hi - all help/suggestions welcome.

I am creating an English/Arabic course where the client wants the text to display side by side (the different texts displaying on the same screen using a toggle switch).

I am creating a certificate of completion with today's date displayed. No problem with the English version and calendar - but I can't work out the JS/variable for the Islamic calendar. Can anyone help with this?

Thanks in advance for any help.