I considered making my Mudcat Browser Tools addon change the displayed times to my local (UK) timezone. It would be quite easy to do. I didn't, mainly because it's not really a problem, but also because you sometimes have to quote the time of a post - they're not (visibly) numbered.

Referring to FreddyHeady's question of 04 Apr 17 - 08:02 AM: the addon will automatically fill in the same guest username. But only on the same computer (and on supported browsers).