UBB.threads PHP Forum Software Community Forums Resources and Customizing Admin Zone Forum time/date setting

In the admin panel does the "Default Time Offset (Hours)" setting correlate to server time or UTC?

Below it shows "Unadjusted Server Time:" so I assumed it's exactly that, but it just so happens that it shows the current time in the UTC timezone even though I believe my server is on CST (or so typing "date" in the terminal has me believe).