What does this tool do?

It computes natal positions and house cusps with computeNatalChart and draws an SVG zodiac wheel.

Which house systems are supported?

Placidus, Whole Sign and Equal. Placidus falls back to Equal above ±66° latitude.

No. Time, timezone and coordinates never leave the browser.

Placidus uses time-based semi-arcs, so cusp spacing varies with latitude and season.

Birth chart positions and house cusps drawn as an SVG zodiac wheel

City search (offline)

Latitude

Longitude

IANA timezone

Local date and time

House system

Birth date, local time and coordinates stay in the browser. House systems: Placidus, Whole Sign and Equal. The wheel is vanilla SVG.

Use birth data as a starting point for reflective exploration with natal charts, numerology, and Human Design bodygraph tools.

Life Path, Destiny, Soul Urge and Personality numbers from a birth name and date.

Nine-center Human Design bodygraph from birth time and place.

Physical, emotional and intellectual sine waves for the next 30 days.

Twilight, golden hour and blue hour windows for any date and place.

Plant by waxing or waning moon and zodiac part — leaf, root, flower, fruit.

Align 16:8 and other protocols with local sunrise on a 24-hour clock.