Nativitas · Your birth sky

Natal Chart

The planets at your chosen date, time and place.

Your birth details

Choose the date, local time and place of birth. Generate a tropical natal chart with Placidus houses, planet positions and major aspects.

Choose a match to fill coordinates, estimated elevation and timezone. Smaller places can be entered by coordinates.

Choose a date and time in the selected time zone. Current date range: 1900–2099; dates at the source-data boundaries may be unavailable.

Daylight-saving changes are included. Coordinate edits do not change the timezone; check it when moving to a different location.

Ready. The first calculation downloads the engine and astronomy data (about 60 MB). No account or Python installation is needed.

Method and limitations

Sun, Moon, Mercury, Venus, Mars, Ceres, Jupiter, Saturn, Uranus, Neptune and Pluto. Positions are geocentric apparent ecliptic longitudes of date in the tropical zodiac. Placidus houses use the chosen time and coordinates. Placidus is unavailable at or beyond the polar circles; no other house system is substituted.

Astrology and aspect orbs are historical conventions without established scientific predictive validity. Astronomical calculations remain provisional pending independent validation.

Calculations run on your device. City search and astronomy files come from this site; your chosen coordinates are not sent to a calculation service. The browser may cache downloaded files for later visits.

City locations adapted from GeoNames, CC BY 4.0. City elevation is an estimate. Calculation software and data credits.