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Selenarium · Astrology

Natal chart online

The sky at the exact minute you drew your first breath. It is yours alone: even someone born the same day has another sky, another minute, another city. I calculate it free.

The time matters: the ascendant and the houses depend on it. If you do not know the exact time, leave 12:00 - the planets in the signs will be right, the ascendant approximate.

What the natal chart shows

The natal chart is the blueprint of the sky at the moment of birth. The planets spread across the twelve signs of the zodiac and the twelve houses, and the angles between them form the aspects.

The ascendant

The sign that was rising over the eastern horizon the minute you were born. It changes every two hours or so, which is why the exact time is needed: an hour off carries it into the next sign.

The houses

Twelve sectors of the chart, each an area of life. By default I divide by Placidus, the most used. You can choose whole signs or equal houses. Beyond the polar circle Placidus does not apply, and there I switch honestly to whole signs instead of drawing the impossible.

The aspects

The angles between planets: conjunction, sextile, square, trine, opposition. They show how the parts of the chart speak to one another.

The twelve houses of the chart

The houses are twelve sectors of the chart, and each one covers an area of life. A planet that lands in a house colours exactly that sphere. Here is what each one holds.

I · self
body, character, looks, first impression
II · money & values
income, belongings, self-worth, what you value
III · communication
speech, study, mind, siblings, short trips
IV · home & roots
family, parents, house, childhood, inner ground
V · love & creativity
romance, children, art, pleasure, risk
VI · work & health
routine, habits, service, the body and its order
VII · partnership
marriage, alliances, partners, open rivals
VIII · crisis & depth
shared money, intimacy, transformation, what turns everything over
IX · worldview
philosophy, faith, far lands, higher learning
X · career & status
calling, reputation, the top of the chart
XI · friends & plans
groups, kindred spirits, dreams, the future
XII · the hidden
subconscious, secrets, retreat, what is concealed

The planets in the chart

The planets are the characters of the chart. Each one carries a force in you, and the sign and house it sits in say how and where that force shows.

Sun
the core «I», will, life force
Moon
feelings, habits, home, inner world
Mercury
mind, speech, how you think and talk
Venus
love, beauty, money, what draws you
Mars
drive, energy, desire, how you fight
Jupiter
growth, luck, faith, where you expand
Saturn
discipline, limits, time, maturity
Uranus
change, freedom, the unexpected
Neptune
dreams, intuition, illusion
Pluto
depth, power, death and rebirth

Aspects: how the planets talk to each other

An aspect is the angle between two planets. It shows whether their forces get along or clash. Five main angles read like this.

Conjunction · 0°
merge and act as one force
Sextile · 60°
easy support, an opening to take
Square · 90°
tension and conflict, a growth point
Trine · 120°
harmony and talent, flows easily
Opposition · 180°
two forces facing off, seeking balance

House systems: Placidus, equal and whole sign

A house system is the way of slicing the chart into twelve sectors. The planets and signs don't move, only the house borders do, so the same planet can land in different houses. Three systems to choose in the form.

Placidus - the most common: houses of different sizes, tied to the birth time and latitude, set by default. Whole signs - the oldest and simplest: each house equals a whole sign and the first starts at the ascendant's sign. Equal houses - all thirty degrees from the ascendant. At high latitudes Placidus distorts, and there whole signs are the honest choice.

How I calculate your chart

The sky does not ask what you believe. In the minute you drew your first breath, the planets stood where they stood, accurate to a degree. That is what I take: exactly as it was, no rounding, no guesswork.

The birth time I set to how the clocks actually ran that year and in that city. The hands have been moved more than once, and by now no one remembers. That is why under each calculation I note which time zone I used.

Frequently asked

What if I do not know the exact birth time?

Leave 12:00. The planets in the signs barely change, but the ascendant, the MC and the houses will be approximate: they depend on the time directly.

What house systems are there?

Placidus (the default, most common), whole signs and equal houses. If you were born beyond the polar circle, Placidus does not apply and the chart is built by whole signs.

Is the calculation paid?

No, the chart is built free and without sign-up.

You have the blueprint of the sky in front of you. What it says about your life is read sign by sign.

✦ See the 12 signs