The screenshot was taken at around 7am this morning! Looks as though somebody messed up the GSM network time on the AT&T network last night. Not sure when it was broken (though my 5:25pm alarm I have to make sure I catch the bus went off again in the middle of the night, waking me up).

Just after taking the screenshot I called AT&T to report the issue (a simple mistake of setting the time to local time rather than GMT), and then at 7:08am my phone magically caught up with reality.