I noticed something odd just now. Apparently I've accumulated more rep today (20) than I have all week (16).
I found another question here which asks the same question, with the answer being that the user had downvoted/had been downvoted another day that week, thus losing rep.
My problem with this answer, in this case, is two-fold:
First, I'm pretty sure (but am oddly having issues confirming) that SO weeks start on Monday, so "today" and "this week" should cover the same period.
Second, my reputation tab isn't showing any "downvote events" within the last week that could cause this.
/reputation also lacks record any such events, though it does show that my displayed rep is horribly out of sync with my real rep. I'm delaying a recalc for the moment in case it's relevant to this question.
I'm at a loss to explain this. Anyone have a theory?