If any accessibility experts are reading, is there a best way to do this? E.g. title attribute is best for mouse users to hover on desktop, but is there a way that works for all users on devices? Maybe the abbr tag?
So far I haven't seen an html-only solution that works on mobile.
I've been developing my new website and use "x days ago" which is a feature of most date libraries like luxon or moment. I modeled what GitHub does where you can mouse over the text and it produces the actual timestamp. On mobile that doesn't work, so I print the date in disabled text.