As the Sun's average daily motion is of one degree, during each year of live the Secondary Progressd Sun will move one degree.
The Secondary Progressed Sun's position is the Sun's position a specific number of days after birth, to correspond to the same number of years in life. To calculate the Solar Arcs, we use the position of the Secondary Progressed Sun. The core of this predictive technique is the Sun: its individualized progressed motion approximating a day-for-a year captures one's progress throughout life time. Right now: Moon at 21★7' Capricorn, Sun at 28☀1' Libra Solar Arcs Solar Arcs - astrology predictive technique