Tropical zodiacGeocentric apparentSwiss-verified to 18″

Plot the sky of a single minute.

Give us the civil time and place. The server resolves the historical clock, computes the natal chart, and saves it at a stable address you can return to.

Sighting

Local time

Server precise. The browser submits civil birth data; historical time resolution and every chart calculation happen once on the server.

One sky, one answer

The browser never calculates your chart.

Planetary positions, house cusps, derived points, and aspect matching all come from one framework-free engine running on the server.

18″
Worst planetary deviation
<1″
Angles and house cusps
3
House systems