Do Synastry Techniques Work? Yes, But Not Really! Posted on December 11, 2018 by ElsaFebruary 10, 2020 Introduction to a series on synastry. Techniques astrologers use to judge compatibility between charts. Do they work? Theory vs fact. Skip to part two – Synastry – Theory vs Reality. Related What Is A Composite Chart? What Is The Difference Between Synastry And A Composite Chart? Learn About Synastry, The Astrology Of Relationships Synastry – How Will Your Partner Affect You?