Nadia Anderson

Portrait of Nadia Anderson

Nadia Anderson is a Hellenistic astrologer, researcher, and educator at Kepler College. With a background in Greek classics, philosophy, and traditional astrology, her work focuses on reviving and contextualizing ancient celestial knowledge. She holds a B.A. in Greek Classics from the University of Oregon and a Master of Humanities from New York University, where she […]

Dorothy Oja

Portrait of Dorothy Oja

Dorothy Oja is a certified astrologer with an international clientele. She lectures, writes, and teaches, specializing in Elections for Surgery and Relationships (Davison Chart). Dorothy is a faculty member for the International Academy of Astrology and Kepler College, and founded The Relationship Club, hosting astrologers lecturing on relationships. Her published work includes the book Planetary […]

Tara Aal

Portrait of Tara Aal

Tara Aal is an evolutionary astrologer, writer, educator, artist, and tarot reader. She’s the co-author of “Astrology by Moonlight” and “Natural Astrology.” Tara sees clients, teaches, and speaks (including NORWAC, UAC, Kepler College, and ISAR). She’s passionate about experiential astrology, including the practice called Living Planets 1st, and currently serves on the ISAR Board as […]

Predictive Life Chapters: Timing with Circumambulations

Zodiac wheel graphic showing planetary glyphs and Circumambulation through the bounds, four Corinthian columns graduating in size in the distance, greek decorative border "meander design," portrait of Nadia Anderson, Kepler College logo

For over 2,000 years, astrologers have regarded circumambulations through the bounds it as a powerful predictive tool, capable of mapping distinct “chapters” of a person’s life. Each chapter, unfolding over several years, is governed by a pair of time lords whose influence shapes the tone, quality, and life events of the period.

Introduction to Natal Hellenistic Astrology

Thema Mundi chart in traditional square horoscopic chart format, four Corinthian columns graduating in size in the distance, greek decorative border "meander design," portrait of Amy Angelo, Kepler College logo

Explore the foundational concepts of traditional astrology through the lens of the Thema Mundi, the mythical birth chart of the world. Study the four pillars of Hellenistic astrology: planets and sect theory, zodiac signs and rulership schemes, the houses, and aspect theory.

Progressions & Solar Arcs

Astrology chart biwheel with natal chart on the inside, progressions on the outside, circular glowing rainbow prism, radiating sun in center, portrait of Jospeh Crane, Kepler College logo

Study symbolic timing techniques based on planetary motion in the days following the nativity, to gain a wide-angle view of a person’s life path. Use them with transits and solar returns to clarify a person’s circumstances and the decisions to be made.

Astrological House Division & the Symbolism of the Celestial Circles

Study how the major house division systems are calculated—in a way that does not require any math. Rather than advocate the use of one house system over another, we will simply compare them and look at the various celestial circles they are based on, reflecting upon the symbolic implications of each of them and how they might impact on chart interpretation.

Why do astrologers use different house systems? This talk explores the origins and symbolism of house division based on divergent celestial circles. Attendees will gain insight into the major house systems in use today and how the choice of celestial circle influences astrological techniques and delineations.

Astrological Heritage: Rome to the Renaissance

Late Medieval manuscript, chart showing planetary aspects inscribed inside of astrology chart, with painted zodiac symbols and Latin script, figure in center at desk, an astrologer contemplating the heavens, sun with face shining down on him, portrait of Inga Thornell, kepler College logo

This history course begins with astrology in the Roman period. We’ll explore the major periods from Rome to the Renaissance and discuss the contributions of each. Deepen your astrological practice and study the cultural lineage from which the tradition emerges, with this historical survey of the foundations of astrology.