what?
There is GMT+13 ... not only in theory, but alos in real world.
You never use it, but that doesn't mean it wouldn't exist.
Most really mature app(include some web forum apps, such phpbb) support it.
BTW, to north south south north
plz replace the blank space after "退出论坛 |" with  , not add one. It looks OK in mozilla but worse in IE now.