"Raphael's Ephemeris" is the essential tool for all astrologers for calculating the daily positions of the sun, moon and planets throughout 365 days of the year. For many years, Jeff Mayo's book was regarded as the best guide to unlocking the meaning of the "Ephemeris". Now revised and completely updated, its position in astrological circles will continue to be unassailable. Beginners will be able to follow the step-by-step text and learn to understand the use of the "Ephemeris".
In 1973, he founded the Mayo School of Astrology, which after his death has operated from Truro, Cornwall. The school, a member of the Advisory Panel on Astrological Education, offers correspondence courses at both certificate and diploma level and issues a list of its qualified consultants who have gained its diploma, D.M.S.Astrol. Diploma holders are eligible to apply for membership to the Association of Professional Astrologers International.
Mayo's background includes engineering and surveying; during WWII he helped make the maps for the invasion of Europe. He was a fellow of theh Royal Meteorological Society and a member of the British Astronomical Association.