Every time i click "Posts since last visit" it bring up the posts from Feb 27th. I've reset the date about 5 times and it still does the same thing. Initially it will display up-to-date posts but if i click the 2nd page is goes back to Feb 27th.

Mysterious

Not sure what happened.
Mine doesn't do that. Just keep an eye on it.
Or try signing out then back in. Then reset the date.