Sunset and Sunrises are extreme conditions that there is just no way to cover the enroumous brightness range in the scene. I'll probably set my light meter to the reflective mode, then point to a shadow area where I want details to show, then place that in appropriate zone. Even then, I'll probably bracket the heck out of it, say +3, +1.5, 0, -1.5, and -3.0 to be safe.