The Math of Astrology is a simple, methodical, step-by-step guide for manual chart calculation with pencil and paper. Often perceived as difficult, chart calculation is in fact a skill easily mastered with practice. Basic arithmetic is used with each formula to determine sidereal time, planetary positions, and house cusps. Manual chart calculation offers an extra benefit: the process leads to a deeper understanding and interpretation of the chart, which "comes alive" as each step in erecting the chart is completed. In addition to learning how to manually calculate a natal chart, the authors...