There are already many questions about the epic badge and that it was assigned too late, but:
I have just received the Epic badge on http://tex.stackexchange.com after earning 200 rep today (which incl. 2x15 for two accepted answers). However the rep listing under http://tex.stackexchange.com/reputation states for me:
rep cap was reached via rep from upvotes *only* on 41 days rep cap was exceeded on 48 days
I had been keeping an eye on those numbers so the badge came as a surprise. Is this an error? I'd really like to earn the badge ;-).
Also just to clarify: Must the rep cap be hit, i.e. must a limitation have been encountered? By this I mean you got 21 up-votes at one day (20 to get the max 200 rep + 1 to hit the limitation, which is than listed as
 in the listing). Or is it enough to get 200 (or 200+) rep points in any combination? My listing tells me that both of these values are below 50 times. I've tried hitting the recalculate button, with no change.
Ok, I manually recounted all days where I got 200 or more rep. I actually count 50 of them, however on one I had exactly 200 which might not count for the
rep cap was exceeded on number while counting for the badge. This makes 49 days. I thought the last missing one might simply be because the day isn't over, but now it is 5 min after midnight UTC and it is still just 48.
The same -2 offset happened now to me with the Legendary badge:
rep cap was reached via rep from upvotes *only* on 111 days earned at least 200 reputation on 148 days
I don't mind it at this point, but in general there should be an exact display of the days available.