That seems to be a common anomaly. You've been busy so you may have missed it but a few have posted about it. It only shows up in old timers threaded mode. I checked and it does the same for me, everything is set right in my forum Preferences.

It's no biggie, one of those when you have time things unless you think it might be affecting something else.

Also in regards katlpablo's other point. There is nowhere in the MacTech settings to set a time zone, but there is at MacNews, he posted a pic above, I posted one below.

But, when I try and change my time zone at MacNews, then hit the Save button, it gives an error of "email address already in use and highlights the email box in red.

Again, just an FYI.