RSS Feed URL parameters – get last 7 days of posts?

Hello, what are the url parameters I would use to get a date range from a wordpress rss feed?

What would the actual http url look like to get the last 7 days of posts in rss format?

I’ve been searching for a few hours now and can’t find much on this sort of thing.

If this is the wrong section to post in, let me know, thanks!

– Joel