Because we have leap year every four years, the time of the Solar Return chart changes about six hours per year, or five hours and fifty-six minutes to be precise.  ​​This steady, almost six-hour rotation also means that if you stay in the same location from year to year, you will see a cycle associated with the Sun's movement as it moves clockwise three houses yearly. It is also true that the Midheaven of the solar return chart will advance three signs. This pattern is important in understanding your potential and your pattern of growth and achievement from one year to the next.