Taking the difference of their own distance in degrees of time and the required distance in degrees of time, divided by the daily motions of the planet, we have the measure of days. However, for retrograde motion, we have to consider the sum of daily motions.
Taking the difference of their own distance in degrees of time and the required distance in degrees of time, divided by the daily motions of the planet, we have the measure of days. However, for retrograde motion, we have to consider the sum of daily motions.