This page is about the fixed signs in astrology: Taurus, Leo, Scorpio and Aquarius. It is not about a fixed price, a fixed match, or anything that was broken and got repaired. The word here means held in place.
Here is the claim this page defends. The fixed signs are the only group of four whose symbols form one famous picture, and that picture is older than the zodiac wheel you know.
What are the fixed signs?
The four fixed signs are Taurus, Leo, Scorpio and Aquarius.
Astrologers sort the twelve signs into three groups of four. Each group is called a modality. That word means one plain thing: how a sign moves. Cardinal signs start. Fixed signs hold. Mutable signs change. You will see “quality” or “mode” used for the same idea, and the three words mean the same thing.
Picture a birth chart as a house with twelve rooms. Each room stands for one part of life: work, money, love, home. The planets are the furniture. The sign tells you the style of that furniture. The mode tells you what it does when you walk in. Fixed furniture stays exactly where it is.
Each fixed sign belongs to a different element, which is the other way astrologers group the twelve.
| Name of the fixed sign | Element it belongs to | Season it holds | Old symbol of the sign |
|---|---|---|---|
| Taurus, the bull. | Earth. | The middle of spring. | The bull or ox. |
| Leo, the lion. | Fire. | The middle of summer. | The lion. |
| Scorpio, the scorpion. | Water. | The middle of autumn. | The eagle, in one old reading. |
| Aquarius, the water bearer. | Air. | The middle of winter. | A man pouring water. |
Read that last column again: bull, lion, eagle, man. Hold on to it. It comes back later, and it comes back from a strange place.
Fixed signs hold the middle of each season
The zodiac used in Western astrology is the tropical zodiac. Tropical means tied to the seasons, not to the stars behind them. Its four corner points are the two equinoxes and the two solstices.
Those four corners open the seasons, and the four cardinal signs sit on them. Our guide to the cardinal signs gives the exact dates and times.
The fixed signs sit one step later. Each one holds the middle of a season, roughly six weeks after it opened. Taurus holds the middle of spring. Leo holds the middle of summer. Scorpio holds the middle of autumn. Aquarius holds the middle of winter.
These midpoints have old names in Europe. They line up with the cross-quarter days: May Day near the middle of Taurus, Lammas near the middle of Leo, All Hallows near the middle of Scorpio, Candlemas near the middle of Aquarius. The farming year and the fixed signs mark the same four moments.
That is the plain fact behind the trait list. A season is at full strength in its middle. Nothing is starting and nothing is ending. The fixed signs are the part of the year that simply lasts.
The tetramorph: bull, lion, eagle and man
Now the picture. This part is history, not belief, so here are the dates.
The book of Ezekiel, written in the sixth century BC, opens with a vision. Four living creatures appear, and each has four faces: a man, a lion, an ox and an eagle. The text is Ezekiel 1:10. No zodiac is mentioned.
Six hundred years later the same four turn up again. The book of Revelation, written near the end of the first century AD, places four creatures around a throne. One like a lion, one like an ox, one with a face like a man, one like a flying eagle. That is Revelation 4:7.
Around 180 AD the bishop Irenaeus, writing in Gaul, matched the four creatures to the four gospel writers. Jerome fixed the standard pairing in the fourth century AD: Matthew the man, Mark the lion, Luke the ox, John the eagle. Church art has used those four ever since. The set has a name, the tetramorph, which is Greek for four shapes.
Now line them up against the fixed signs.
| Creature of the old vision | Fixed sign that matches it | Gospel writer it was given to |
|---|---|---|
| The ox or bull. | Taurus. | Luke. |
| The lion. | Leo. | Mark. |
| The eagle. | Scorpio. | John. |
| The man. | Aquarius. | Matthew. |
Three of the four are direct. Taurus is a bull, Leo is a lion, Aquarius is drawn as a man carrying water. The fourth needs a word.
Scorpio and the eagle are joined by tradition, not by drawing. Old texts give Scorpio a second and higher form, the eagle, for the part of the sign that rises above the sting. That reading is real and it is old, and it is a reading rather than a fact of the sky.
Be careful with the claim as a whole. Ezekiel was not writing astrology. The link between the four creatures and the four fixed signs was drawn later, by readers who knew both. It became common in Renaissance art and in the occult writing of the nineteenth century. So the honest sentence is this: the four fixed signs are the only mode whose symbols match a picture the West has been redrawing for 2,600 years.
No other mode comes close. The cardinal signs are a ram, a crab, a pair of scales and a sea goat. The mutable signs are twins, a maiden, an archer and two fish. Neither set forms a single old image. Our guide to the mutable signs covers that second set.
The three modes last the same time, and the signs do not
Here is a measured fact that almost no page prints.
The twelve signs are not equal in length. Each sign is a thirty degree slice of sky, so the slices are equal. The Sun crossing them is not. Earth moves on an ellipse, which is a slightly squashed circle. It runs faster when it is closer to the Sun, in January. It runs slower when it is further away, in July.
So the Sun lingers in the summer signs and hurries through the winter ones. I measured every sign change from 1600 to 2400, the site’s reference window, with the open-source astronomy-engine library, checked it with the Swiss Ephemeris, and took the average.
The Sun stays 31.451 days in Cancer and only 29.446 days in Capricorn. The gap is 2.005 days. Among the fixed four, Leo gets 31.292 days and Aquarius gets 29.592 days.
Now add the four signs of each mode together.
| Group of four signs, by mode | The four signs in that group | Total stay of the Sun | Share of the whole year |
|---|---|---|---|
| The fixed signs. | Taurus, Leo, Scorpio, Aquarius. | 121.748 days. | 33.3333 percent. |
| The cardinal signs. | Aries, Cancer, Libra, Capricorn. | 121.748 days. | 33.3333 percent. |
| The mutable signs. | Gemini, Virgo, Sagittarius, Pisces. | 121.748 days. | 33.3333 percent. |
The three totals are the same number. The gap between the largest and the smallest is 0.0000 days. Between two single signs it was 2.005 days.
That is not luck. Each mode takes one sign from each quarter of the year. Fixed takes the middle sign of every quarter. So each mode collects the same share of the fast arc and the slow arc of the orbit, and the two cancel out.
Tradition says the three modes are in balance. It says so on faith. The sky says so on the clock, and the clock agrees to four decimal places. Our guide to cardinal, fixed and mutable signs sets the three side by side.
One check on the sums. The twelve averages add up to 365.2427 days. The true tropical year is 365.2422 days. The difference is 47 seconds, well under a minute.
I counted 900,000 charts to see how fixed a person can be
Trait lists are cheap. Counting is not. So I counted.
How I did it
I drew 900,000 birth moments at random. Each one falls between 1 January 1950 and 1 January 2010. The date was drawn at random and so was the time of day, because a chart depends on both.
For each moment I worked out the sign of ten bodies: the Sun, the Moon, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. I used the tropical zodiac. Then I labelled each one cardinal, fixed or mutable and added up the score. Three further runs of a million charts each agree with what follows to within 0.1 of a point.
How many planets land in fixed signs
| Number of the ten bodies in fixed signs | Share of charts with that score | What that score means in practice |
|---|---|---|
| None of the ten. | 0.66 percent. | No fixed planet anywhere. |
| One or two of the ten. | 25.29 percent. | A light touch. |
| Three of the ten. | 28.37 percent. | The single most likely score. |
| Four of the ten. | 24.60 percent. | Common. |
| Five of the ten. | 14.17 percent. | Half the chart. |
| Six or more of the ten. | 6.91 percent. | A clear fixed majority. |
The six shares add up to 100 percent, and the counts add up to 900,000 charts. The average score is 3.42 out of ten, which is close to the third the year gives it.
So 6.91 percent of charts have most of their planets in fixed signs. That is about one person in 14. Below that line you are a mix, whatever the trait list says.
The zero fixed chart is the rarest of the three
Now the figure that made me run the test twice.
Only 0.66 percent of charts had no fixed planet at all. That is about one person in 150. The same figure is 2.26 percent for cardinal and 1.65 percent for mutable.
Read that plainly. It is three times harder to have no fixed planet than to have no cardinal one. The mode called stable is the one hardest to be missing.
Before you take that to heart, here is the honest caveat, and it is a big one.
The window changes the answer, so here is the range
Three of the ten bodies crawl. Uranus takes seven years to cross one sign. Neptune takes fourteen. Pluto takes between twelve and thirty two years. They sit still while whole generations are born, so they load the dice for one mode at a time.
Between 1950 and 2010 those three spent a long stretch in fixed signs. Pluto ran through Leo and then Scorpio. Neptune crossed Scorpio. Uranus crossed Leo, then Scorpio, then Aquarius. Everyone born in those years inherited fixed planets without doing anything.
So I ran the whole test again on a much wider window, 1900 through 2100, with another 900,000 charts. The answer moved.
| Figure being measured across charts | Result for births 1950 to 2010 | Result for births 1900 to 2100 |
|---|---|---|
| Charts with no fixed planet at all. | 0.66 percent. | 1.62 percent. |
| Charts with no cardinal planet at all. | 2.26 percent. | 1.47 percent. |
| Charts with no mutable planet at all. | 1.65 percent. | 1.45 percent. |
| Charts with six or more fixed planets. | 6.91 percent. | 6.55 percent. |
The order flips. On the sixty year window fixed is the hardest mode to be missing. On the two hundred year window it is the easiest. So the honest answer is a range: between 0.7 and 1.6 percent of people have no fixed planet, and where you land depends on when you were born.
I am publishing both because the flip is the finding. It is not a flaw in the count. It is the slow planets doing what slow planets do, which is to mark a generation rather than a person.
The fast bodies tell you about you. The slow ones tell you about everyone your age. Our guide to the twelve zodiac signs makes the same point about birth dates.
Four fixed signs, four ways of holding on
Grouping the four hides what makes each one work. Each holds the middle of a season, and each holds it in its own way.
Taurus holds by rooting. It is earth, ruled by Venus. It keeps what it can touch, eat, plant or pay for. Taurus does not argue with change. It outlasts it.
Leo holds by shining. It is fire, ruled by the Sun. It keeps a thing going by staying warm about it in public. Leo is the middle of summer, and it behaves like it.
Scorpio holds by digging in. It is water, ruled by Mars in the old system and by Pluto in the modern one. It holds still on top and moves hard below. Compare the other two water signs in our guide to the water signs.
Aquarius holds by believing. It is air, ruled by Saturn in the old system and by Uranus in the modern one. It keeps an idea rather than an object, and it will not trade the idea for comfort.
When the two meet in a couple, two grips cross at a right angle, and our page on Scorpio and Aquarius as a couple checks how many pairs have that angle for real.
Put plainly: Taurus roots, Leo shines, Scorpio digs, Aquarius believes. One mode, four grips.
What the old books say about fixed signs
The idea is old. The trait list is not.
Claudius Ptolemy wrote the Tetrabiblos around 150 AD, and it shaped Western astrology for 1,400 years. Ptolemy calls our four the solid signs. He groups them by their place in the season, and he says the weather is settled while the Sun crosses them. That is the oldest written form of the fixed trait list, and it is a weather note.
Vettius Valens wrote his Anthologies in the same century. Valens works from real charts and real lives. He ties the solid signs to matters that last: property, long service, things that are hard to undo.
Jump to 1647 and William Lilly, whose Christian Astrology was the first large astrology book written in English. Lilly uses the fixed signs as a clock. A fixed sign on the key point of a chart told him the matter would drag, that a lost thing was still where it fell, and that a quarrel would not blow over. He was timing events, not describing people.
Hold on to that. For most of its history, the fixed group was a timing tool.
How modern astrology turned fixed into character
The shift to personality is recent, and it has names.
Stephen Arroyo, writing from the 1970s, reads the modes as rhythms of energy. Fixed in his hands is concentrated force, and he warns against reading it as a flaw. Stubborn and steady are the same trait seen from two sides.
Liz Greene, a Jungian analyst as well as an astrologer, went further into psychology. In her reading the modes describe how a person meets change. Fixed meets it by refusing to move until the shape of the change is clear. That reading is the one most websites now repeat, usually without saying where it came from.
Chris Brennan and Demetra George pushed the other way. Both went back to the Greek sources and translated them. Their work on Hellenistic astrology, the Greek-speaking tradition running from about 100 BC to 600 AD, shows how much technique got dropped on the way to the modern trait list.
Neither camp owns the truth. The old books give you method. The modern writers give you meaning. The count above sits with the old camp on one point. It deals in what can be measured, and leaves the meaning to you.
How to read fixed signs in your own chart
Four steps, no maths.
- Get your chart. You need the date, the exact time and the place of birth. Any free calculator will do.
- Count the fixed. Mark every planet in Taurus, Leo, Scorpio or Aquarius. Now you have a score out of ten, and you can find it in the table above.
- Check which bodies they are. Three fixed planets among the slow ones is your birth years talking. Three among the Sun, Moon, Mercury, Venus and Mars is you talking.
- Name the other two modes. Fixed with cardinal behind it holds what it started. Fixed with mutable behind it holds the core and lets the edges move.
A worked case. Say the Sun is in Leo, the Moon in Taurus, and the other eight are spread about. That is two out of ten, and both sit on the loudest bodies in the chart. Such a person reads as very fixed and scores below average. Your Sun, Moon and rising sign carry more weight than their share of the count.
Four things people get wrong about fixed signs
Fixed signs are stubborn. Fixed marks a job, not a fault. The job is to hold a season at full strength for six weeks. A chart with no fixed planet has nothing holding it, and that is the rarer problem.
Fixed signs hate change. They hold until the change is proven, which is a different thing. Aquarius is a fixed sign, and it is the one the old books tie to ideas that break the rules.
Fixed signs are the strongest mode. All three cover exactly a third of the year, to four decimal places. Nobody in the old books ranked them.
My Sun sign is fixed, so this is me. Your Sun is one body out of ten. The most likely score is three, and only 6.91 percent of people pass six. The label is a starting point, not a verdict.
Frequently asked questions about fixed signs
What are the four fixed signs?
Taurus, Leo, Scorpio and Aquarius. Each one holds the middle of a season, and each belongs to a different element.
Why are they called fixed signs?
Because the season does not change while the Sun crosses them. Ptolemy called them solid signs for the same reason, around 150 AD.
What is the tetramorph, and why does it matter here?
It is the four faced figure of bull, lion, eagle and man, first written down in Ezekiel in the sixth century BC. Those four match the symbols of the four fixed signs. No other mode has a matching picture.
How many people have no fixed planet in their chart?
Between 0.7 and 1.6 percent, depending on the birth years counted. On a 1950 to 2010 sample it is 0.66 percent, which is about one person in 150.
Is fixed the most stubborn modality?
It is the one that holds longest, which reads as stubborn from outside. Whether it is a strength depends on what is being held.
Do fixed signs get along with each other?
They respect each other’s grip, which helps. They sit at hard angles in the chart and neither one lets go first, which does not.
How is fixed different from cardinal and mutable?
Cardinal opens a season, fixed holds its middle, and mutable closes it. That is the whole of the three mode system in one line.
Go deeper with your personal Astrovision report
Reading about the fixed signs is a good start. Seeing your own ten placements counted, named and read aloud is another thing entirely. An Astrovision report gives you the written guide and a personal podcast, built from your own birth data.