Thanks for clearing up the mystery, MB.
However, I'm not certain this really clears up the question ...
When I'm logged in now, it says I made the post "Yesterday at 10:48:54 p.m."
When I'm not logged in, it says I made the post 8 hours earlier, "Yesterday at 2:48:54 p.m."
BUT yesterday, when I made the post, let's say it was actually at 5:48:54 p.m. (CT), which I think is correct. When I returned to the board incognito, I think it was no more than half an hour later, it said the post had been made, quote, "YESTERDAY ..." (and I didn't note the time). Even given the 8-hr. difference between the board's settings and my personal settings, I don't see how it could say that I had made the post on the PREVIOUS DAY! If anything, it should have shown the post at 8 hours later when I wasn't logged in, not the previous day!
Sorry if I'm just not understanding here ... it's not that important, but just a curiosity ...