Natal.chart

Western astrology, in plain English

The sky at your birth, calculated. What it means, yours to decide.

A natal chart is a map of where the Sun, Moon and planets stood when you were born. We compute that map with astronomy-grade maths, then show you what astrological tradition has said about it, clearly labelled, and invite you to reflect.

This page shows synthetic examples. Chart calculation for your own birth details is not open yet.

Layer 1 · Computed

Positions

Astronomical calculation. These are positions in the tropical zodiac, not opinions.

Planetary positions
BodySignPositionHouseMotion

Layer 1 · Computed

Aspects

Angles between planets, within a stated orb. “Uncertain” means the angle comes and goes during a day of unknown birth time.

Aspects between planets
PairAspectOrbStatus

How to read it

Three layers, never blended

  1. 1

    Computed positions

    Where each body was, which sign and house it falls in, and which angles it makes. Produced by deterministic code and checked against independent published values. If something is unknown, such as a rising sign without a birth time, we say unknown instead of guessing.

  2. 2

    Traditional interpretation

    What astrological tradition associates with each placement, drawn from a fixed, labelled library. It describes a cultural tradition. It does not describe you, and it does not predict anything.

  3. 3

    Reflection AI-generated

    Optional prompts for thinking about your own life, written from the first two layers and checked automatically against your chart facts before you see them. Not a diagnosis, not a forecast.

Layer 2 · Traditional

What tradition says about this sample

Short seed-library entries for the selected sample. Each is attributed to a placement; none is a statement about a real person.

    What this is, and is not

    Computed: planetary positions, angles and houses come from astronomy. Calculated precisely does not mean astrology is validated as a way to predict events or describe personality.

    Interpretive: the meanings are a cultural tradition, offered for reflection and curiosity. We do not forecast events, pick dates, or give health, legal, financial or major life-decision advice. For those, please talk to a qualified professional.

    Method

    How a chart is calculated

    Ephemeris
    astronomy-engine, MIT-licensed, accurate to about one arcminute for the Sun, Moon and planets. A degree-level reading is far coarser than that.
    Time
    Local birth time becomes UTC using the time zone rules for that place and date. A clock time that never happened, or happened twice, is flagged rather than guessed. Supported dates: 1900 to 2100.
    Zodiac
    Tropical. Houses: Whole Sign or Equal, both derived from the rising sign. Lunar node: mean node.
    Unknown birth time
    No default is chosen. Planets are computed across the whole local day; if one changes sign that day we show both candidates, and houses and rising sign stay unknown.
    Boundaries
    A placement within 2 arcminutes of a sign boundary is marked near cusp because that is inside the engine’s error.