Yes, the pages I edited yesterday now show up on the Sitemap Page Search list.

Oops, this is not true. Several pages show yesterday's date in the most recent approved entry on Versions, but continue to show an earlier date modified on the Page Search list.

I have edited ten pages today. One of them does show up with today's date in the Page Search list; that is a page where I changed the name. The other nine pages all show earlier dates.

Can anyone tell me when the date modified gets updated?

What I am really trying to do is find the pages that have been recently edited so I can review them. That seems like a fairly basic requirement for collaborative websites. Am I missing something?