Jarosław Gronert has been an astrologer since 1986. His teacher, Leszek Weres, founded the Polish School of Astrology. Since 1990, Gronert has been teaching about arcana and regularly leads courses in Polish cities including Łódź, Warsaw, Poznań, Kraków, Szczecin, Katowice, Wrocław, Rzeszów, Kalisz, Radom, Gdańsk, Gorzów Wielkopolski, and Wisła. His role as a teacher is well reflected in the Sabian symbol for his natal Sun at 5° Libra: “A man teaching the true inner knowledge of the New World to his students.”
He is also the author of five books:
- Astrologia od początku (Astrology from the Beginning)
- Strategia kosmosu (Cosmic Strategy)
- Na zakręcie dziejów: 2012–2015 (On the Cusp of History: 2012–2015)
- Kosmiczne uwarunkowania w dziejach Polski: 1920 (Cosmic Conditions in the History of Poland: 1920)
- Szkice o Plutonie w Wodniku: 2023–2044 (Sketches on Pluto in Aquarius: 2023–2044)
