New User has several days reported as "Days Visited"?

[ClawdiaWolf (Claudia)]

@kgrier

But the Data Explorer shows a creation of Jan 10, not Jan 9 as in the User Activity. Is there some local time vs UTC thing happening?

Yes. When viewing a profile it shows the times in your local TZ instead of UTC unless your local TZ happens to be UTC whereas DE shows the stored UTC value