Not sure it's fair to call it a bug. We've got an international forum with users in pretty much every time zone and there's no guaranteed way from a browser interface to know how local time on your PC compares to UTC. Add onto that that some time zones are plain weird and not based on geography, e.g. China covers three time zones but only uses one, plus there are 30 minute time zones in some places. Then the use of DST varies dramatically (I think I saw that that some US states have areas with DST, other areas with no-DST, and some that have a 30 minute DST). Oh and don't forget that there's northern and southern hemisphere DST to contend with. I'm amazed that SMF gets close to getting it right!