Dual-Engine Astrology & Human Design
Pure Astronomical follows the IAU 13-sign sky. Traditional Tropical follows the 12-sign zodiac. Both are calculated from the same birth data.
Birth Data
Enter a city to auto-resolve lat/lon — or leave blank for geocentric (no location).
Saved Charts
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Calculate a chart. Its tables open here, one at a time.

Natal Chart

Pure Astronomical · 13 signs

Traditional Tropical · 12 signs

Daily Transit Shifts

Moon, Mercury, Venus, Sun, Mars, and Chiron. These are the contacts moving through today.

Pure Astronomical · 13 signs

Traditional Tropical · 12 signs

Slower transits — still in orb

Jupiter through Pluto, the nodes, Lilith, and the asteroids. These stay exact for days.

Pure Astronomical · 13 signs

Traditional Tropical · 12 signs

Human Design

Pure Astronomical · Human Design

Calculate a chart to place Personality and Design. Today’s transits map against that natal wheel.

Traditional Tropical · Human Design

The traditional 302° wheel is calculated from the same birth data.