I can't find anywhere what is current Forum time
It's probably not what that page is meant for, but I do get told what the "current forum time" is
here.
(I might be wrong, though; since the EU does its DST switching on other days than the US, the ability to set a
constant offset from "forum time" isn't going to be error free, anyway, so I just leave it set to zero, and "forum time" and "my personal time" cannot be distinguished.)