Fagan-Bradley Regiomontanus Birth Chart Calculator

This calculator uses Fagan-Bradley sidereal zodiac system and Regiomontanus house system.

The Fagan-Bradley ayanamsa is a popular Western sidereal system developed by Cyril Fagan and Donald Bradley. It places the vernal point at 0° Aries in the year 221 CE, resulting in an ayanamsa of approximately 24.7° in 2000.

The Regiomontanus house system, named after 15th-century astronomer Johannes Müller (Regiomontanus), is a space-based quadrant system. It is popular among Renaissance and traditional astrologers and is known for its mathematical elegance.

For more features including saving charts, transit charts, synastry charts, and more settings please use True Sky online astrology software.