Enter a birth date, local time, UTC offset and coordinates to calculate the Big Three, ten tropical placements, Whole Sign houses and major aspects. The details are used only for this response and are not stored.
Enter exact birth details
Use the historical UTC offset, including daylight saving if it applied. Find coordinates in a trusted map. Values are processed for this page only.
How the chart calculation uses your birth data
Placements, houses and aspects in the report
A natal chart is a map of the sky for one moment and place. Exact time and location matter most for the rising sign and houses, which change much faster than the planets.
Positions and event times are calculated with Astronomy Engine, an open-source astronomical library. For independent observational data and definitions, consult NASA JPL Solar System Dynamics.
A calculated chart does not decide a life
Calculated positions are astronomical data. Astrological meanings are a symbolic tradition, not scientific predictions or professional advice.