It's generally fun to observe. When I've seen ISS, it has been around sunset. It is a readily discernible point of light, in my memory brighter than Venus and certainly brighter than any star, that moves from horizon to horizon in only about 4 minutes ("faster than a speeding plane"), even less time considering trees, buildings, and hills.
Because of the speed, it is helpful to know what place on the horizon the overpass will start at, in addition to the precise time.
Because of the speed, it is helpful to know what place on the horizon the overpass will start at, in addition to the precise time.