Fagan-Bradley Koch Birth Chart Calculator

This calculator uses Fagan-Bradley sidereal zodiac system and Koch 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 Koch house system, developed by Walter Koch, is a quadrant system that divides houses based on the great circles through the east point and the MC. It is popular in German-speaking countries and among some modern astrologers for its focus on individual birth time accuracy.

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