Free tool · Birth chart
Your sky, the minute you arrived.
Date, time and place. We compute every planet, your Rising sign and all twelve houses, right here in your browser. Free, no email, no account.
Planets
| Body | Position | House | Retrograde |
|---|
Points and angles
| Point | Position | House |
|---|
Chiron and the asteroids NASA/JPL Horizons
| Body | Position | House | Retrograde |
|---|
Houses
Aspects
Balance
How it's calculated
Real astronomy, shown honestly.
- Planets
- Computed from published orbital theory (Schlyter for the planets, Meeus for the Moon) and checked against a scientific ephemeris on 1,500 dates: every body within 0.06°, the Moon within 0.01°. In a side-by-side check with a Swiss Ephemeris calculator, all positions agreed within about 2′ and every house placement matched.
- Time
- Your local clock time becomes Universal Time through the full historical time-zone database, including daylight saving and old local times, such as Amsterdam Mean Time before 1940. The moment we used is shown above the chart.
- Houses
- Placidus by default, Whole Sign if you prefer. Placidus is undefined near the poles; there the chart switches to Porphyry and says so.
- Points
- True lunar node, mean Black Moon Lilith, Part of Fortune (Ascendant + Moon − Sun) and Part of Spirit, and the Vertex.
- Chiron and asteroids
- Chiron, Pholus, Ceres, Pallas, Juno, Vesta and Eros come from NASA JPL's Horizons ephemeris for 1900–2030, stored as one small table and interpolated in your browser to within 1.5″ of Horizons itself.
- Privacy
- Your date and time of birth stay in your browser. Only the place name you type is sent, through our server, to the OpenStreetMap search (Photon); your IP never reaches them. The asteroid table is the same file for everyone, so loading it says nothing about you.
Every light has a signature.
Read yours.
Opening year · 50% off every protocol, first year only · prices excl. VAT · delivered within 24 hours, depending on volume