On April 19, Ron Tiggle will speak on Secondary Progressions and Solar Arc Directions. Secondary Progressions and Solar Arc Directions are two of the most important predictive techniques astrologers use. Yet, few astrologers know how to calculate Secondary progressions correctly, and since Solar Arc Directions are derived from the Secondary progressed Sun, these are also in error.
Edward Johndro identified this error 90 years ago, yet more recent textbooks on Astrology are still teaching the traditional incorrect method for computing Secondary Progressions and Solar Arc directions. Although some astrological software includes the correct method for computing Secondary Progressions, the default method in the software is the incorrect one. And some programs only include the incorrect method of calculating Secondary Progressions and Solar Arcs. In addition, this error also affects tertiary progression calculations.
During his presentation, Ron will show you how to calculate Secondary Progressions and Solar Arc Directions correctly and point out why the traditional method is incorrect and describe the magnitude of the error. The correct calculation options will be identified in popular astrological software such as Sirius, Solar Fire, and Kepler 7. A method will also be given to correct the error when your software only uses the traditional method.
Dr. Tiggle has a Ph.D. in Social Psychology from UCLA an MA in Psychology from California State University, Long Beach and a BS in Chemistry from Howard University. He has worked as a Research Psychologist for several Federal agencies conducting social science research in organizational and health psychology.
Ron is a former Research Director for the International Society for Astrological Research, and a contributing author to Astrological Research Methods Volume 1. Ron has also published research in a traditional refereed psychology journal providing validating evidence for astrology. He is Certified as a Professional Astrologer by Professional Astrologers Inc and is also a Lifetime member of the International Society for Astrological Research (ISAR) and the American Federation of Astrologers.
He also teaches classes on a meditation technique known as the Rainbow Bridge Meditation.