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study hellenistic astrology

July 17 – August 10, 2023

How to Calculate a Chart by Hand

Mathematikos is the ancient Greek word that was used to refer to an astrologer because they were always doing numbers in order to erect a chart. This is the first and most fundamental act of the astrological tradition. Tap into this esteemed lineage and preserve it by learning the almost lost art of calculating and drawing up an astrological chart by hand. The process becomes a meditation in its own right and helps you to embody the chart before even encountering the client.

Sliding into a beginner’s state of mind, Demetra presents her signature style clear, orderly, detailed and thorough step-by-step teaching.  Using only an Ephemeris, Table of Houses, and basic arithmetic, master how to determine the exact degrees for planets’ longitude and declination, and the MC, Ascendant, and intermediate house cusps. Then draw up the chart in the Placidus, Whole Sign, Equal, and Porphyry systems.


Ancient Astrology volume 2

Ancient Astrology in theory and practice Vol. 2

My latest book Ancient Astrology in Theory and Practice: A Manual of Traditional Techniques, Volume II: Delineating Planetary Meaning is now available.

It has taken many years to distill these teachings of our ancient astrological wisdom tradition and I thank my teachers, students, colleagues, and editor Dr. Aaron Cheak who participated with me in this process.