Articoli
Come funzionano i calcolatori, cos’è un tema natale e come leggere la ruota senza farne un verdetto.
Basi
What is a natal chart?
A natal chart is a map of the sky from your birth date, time and place: planets, Ascendant and twelve houses. It is not a daily Sun-sign horoscope or a quiz.
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Natal chart vs horoscope
A natal chart is your birth-sky map from date, time and place. A horoscope is usually a Sun-sign column. They are not the same reading and should not be swapped.
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What is my sun sign?
Your Sun sign is the tropical zodiac sign the Sun occupied on your birth date. You usually do not need a birth time. It is one placement, not the whole natal chart.
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Sun, Moon and rising: the Big Three
The Big Three are Sun, Moon and rising sign. Sun from the date, Moon from date plus a check on time, rising only with birth time and place. Read them together.
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What is my rising sign?
Your rising sign is the zodiac degree on the eastern horizon at birth — the Ascendant. It needs an accurate birth time and place. Without a birth time, skip it.
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What is a Moon sign?
Your Moon sign is the tropical sign the Moon occupied at birth. It changes every two and a half days. Time still matters for the degree, the house and cusp days.
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What is a Venus sign?
Your Venus sign is the tropical sign Venus occupied at birth. It describes style in attraction, taste and values — a natal coordinate, not a dating verdict.
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What is a Mercury sign?
Your Mercury sign is the tropical sign Mercury occupied at birth. Mercury stays near the Sun, so the signs match or neighbour. Time still sets house and degree.
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What is a Mars sign?
Your Mars sign is the tropical sign Mars occupied at birth. It describes how the chart starts, argues and pursues — a natal coordinate, not a licence for conflict.
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Why does birth time matter for a natal chart?
Birth time sets the Ascendant, houses and the Moon’s degree. A twenty-minute error can change the rising sign. Without a time you get planetary signs, not houses.
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Can I make a birth chart without a birth time?
Yes: planetary signs and aspects still calculate without a birth time. The Ascendant and houses do not. Do not treat a noon chart as a full natal map of houses.
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How to read a natal chart
Read a natal chart in order: Big Three, occupied houses, then tightest aspects. Use the tables as the instrument. Unknown time means skip houses and the Ascendant.
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What are houses in a birth chart?
Houses are twelve local sectors of the birth sky, not zodiac signs. They need a birth time. SideraChart defaults to Placidus; unknown time means no honest houses.
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What are empty houses in a birth chart?
An empty house has no planet sitting in it. It is not a missing area of life. You still need a birth time to know which houses are empty; noon charts fake the gaps.
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What are aspects in astrology?
Aspects are named angles between planets along the ecliptic: conjunction, sextile, square, trine, opposition. SideraChart uses orbs of 8°, 6° and 4° for those five.
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Tropical vs sidereal zodiac
Tropical zodiac starts at the March equinox. Sidereal uses a star zero point, about 24° away today. SideraChart is tropical only — not Vedic, not Swiss Ephemeris.
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Synastry vs composite chart
Synastry overlays two natal charts and lists aspects between them. A composite chart averages longitudes into a third wheel. They answer different questions.
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What are transits in astrology?
Transits are today’s positions compared with your natal chart. They are weather against a fixed baseline, not a new birth chart. SideraChart stores them at noon.
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