Apparent solar time is a way of measuring time based on the position of the Sun in the sky. It is determined by observing when the Sun is at its highest point, known as solar noon. This method reflects the actual movement of the Earth in relation to the Sun, making it a natural way to track time. Unlike standard time, which is divided into time zones, apparent solar time can vary depending on your location and the time of year. This variation occurs due to the Earth's elliptical orbit and axial tilt, leading to differences between solar time and clock time.