QIClock was written primarily for the developers, who found themselves dealing with coworkers on all sorts of different time zones, particularly those with the gall to reside on the other side of the international date line (should you, like the Sun, only conceptually travel East to West).
It might also come in handy if you're attempting to watch the opening series of the Major League Baseball season and for some reason or another they're playing it not in the home team's ballpark but somewhere five thousand miles or so to the left of it.
