I was first taught Age Harmonics by the wonderful Dymock Brose in the late ‘90’s or early 2000’s. At that stage we were calculating these by hand with the help of tables he had devised to speed up the process, later Solar Fire incorporated the calculations (thank goodness) and it has been plain sailing ever since. I have worked with this system every day and have fined tuned it to a considerable degree of accuracy.
YEAR Age Harmonics are even better than Solar Returns to describe the type of year you will have and the areas that will be emphasised. DAY Age Harmonics are the best timer for events that I have ever found in my 50+years as an astrologer and they are so precise that they can rectify your chart to seconds. BIRTHDAY Harmonics can show which years will have a big impact on your life.