Ephemera
Calculate solar-system positions and local rise/set times for a date, time and location. Includes city search and a downloadable report.
A new project by Alexander Ferrari Miller
Nativitas
Your sky. Your moment. Your story.
What did the heavens look like when you were born? Nativitas is being developed to reconstruct the celestial positions at a particular place and moment in time, using astronomy as its foundation and exploring astrology as a historical and cultural tradition.
Natal Chart
Generate a chart for your birth date, time and place, with Placidus houses, planet positions and major aspects.
Synastry
Compare two birth charts in a bi-wheel, with cross-chart aspects and house overlays.
Your Birth Sky
Explore the Sun, Moon, planets, and constellations at your birth date, time, and location.
Accurate Astronomy
Computed celestial positions, with transparent methods and clear distinctions between measured facts and interpretations.
Traditions & History
Learn how people, including historical astronomers, interpreted celestial configurations across centuries.
Accessible by Design
A useful free experience is the goal, with optional enhancements planned at a simple one-time price.
Ephemera is available now. Birth charts and other features remain under development. Astrology's claims about personality and future events have not been scientifically validated.