Thoughts on adding getting long month names (and possibly day names)?

It's simple enough to hard code it of course but I ran into this cool answer on StackOverflow on getting the long month names via Intl:

https://stackoverflow.com/questions/47232534/how-to-get-a-list-of-month-names-in-javascript-using-intl

I wondered if it might be worth adding to this guide. It would be awesome to get long and short day names too if that is possible.

Just wanted to ask before digging into it and to have a reminder (as have to come back to it later).