"For astrologers who study midpoints, this new 15-year ephemeris will be a ""must have."" Rique Pottenger has revised and updated the programming of the late Neil F. Michelsen's prior versions to extend the years, now 2006 through 2020. Ceres, newly named to the same planetary status as Pluto, is included in all midpoint combinations. Midpoints often reflect events in very close timing, when single planet transits alone may not. This book allows quick scanning of transiting midpoint combinations-a highly significant time saver over the unwieldy alternative of having to calculate each combination. An Introduction by Roger Hutcheon explains midpoint theory and the advantages of this ephemeris. "