East and west are at right angles to the north and south. The east is in the clockwise direction of rotation from the north. West is directly opposite east. The sun's position in the sky can be used to determine east and west if the general time of day is known. During daylight savings time, when the hour is adjusted down, it is necessary to begin counting westward from 1 instead. For example, suppose that the sun is due south at 10:00 a.m. If you know that it is March, then you can say that it is "in the west" at that time. Since the sun is out until 2:00 p.m., it is not possible to say with certainty what time it will be "in the east." However, since the sun will have moved westward (toward its setting position) during those two hours, it is reasonable to say that it will be "in the west" by 2:00 p.m. In summary, the east-west direction is that part of the compass point system which is perpendicular to the north-south direction. Directions such as northeast, southeast, southwest, and northwest indicate points on a compass rose relative to the location of an observer. Directions such as north, south, east, and west indicate directions relative to some fixed reference point, such as the North Star or Sun.