Saturday, 6.12pm. In the WhatsApp group "Tilly's birthday", someone posts a poll: "Next Saturday — dinner, bowling or drinks at mine?". At 6.13pm, two votes. At 6.14pm, Tilly — the birthday girl, born on 4 April — types: "Too slow. I've booked the karaoke place by the canal for 9pm, twelve of us." The poll is still open. Three thumbs-up land. A small voice asks whether anyone had voted for bowling. Nobody answers.
If there's an Aries in your life, you've just recognised her. And if it's you, you're probably thinking that poll was dragging on a bit (yes, we see you). That's the whole paradox of the sign: the thing that annoys everyone else — deciding for the group, fast, without warning — is exactly why the night out happens at all. Without the group's Aries, that poll would still be open on Wednesday.
Aries season ends around 19 April, which makes this the right moment to go beyond the usual three adjectives (impulsive, brave, hot-headed). Below: the decans, the rising sign, love, work, the famous temper, and a compatibility ranking with actual reasons. Plus what astronomy and the scientific tests say about all of it — because you deserve to know what you're leaning on.
Aries at a glance: dates, element, planet, symbol
Aries is the first sign of the zodiac — a fire sign, cardinal, ruled by Mars. The Sun enters it at the spring equinox: in 2025 that was Thursday 20 March at 09:01 GMT, according to the US Naval Observatory's 2025 equinox and solstice data. It leaves around 19 April. The dates shift by a day from year to year (and with your time of birth), which is why some charts say 20 March and others 21.
| Marker | Aries | What it means |
|---|---|---|
| Dates | 20 or 21 March to 19 or 20 April | the first month of spring |
| Element | Fire | drive, action (like Leo and Sagittarius) |
| Modality | Cardinal | the one who starts things |
| Ruling planet | Mars | desire, courage, fight |
| Opposite sign | Libra | the "me / us" axis |
A detail I love: astronomers mark the point where the Sun sits at the spring equinox — the vernal point — with a little pair of horns: the astrological glyph for Aries, not a Greek gamma. The Ram left its signature on scientists' star charts — which is very on brand.
The symbol comes from Greek myth. Chrysomallos, the ram with the golden fleece, flies off to rescue Phrixus and his sister Helle from being sacrificed. Helle falls into the sea that takes her name (the Hellespont), Phrixus lands safely — and the fleece becomes the treasure Jason and the Argonauts go looking for. An animal that charges across the sky without asking permission to save someone: hard to find a better mascot.
The Aries personality: leap first, ask questions later
Aries starts before everyone else, and knows it. In astrology it's the sign of beginnings — the seed pushing through the soil, the person who says "right, let's go" while everyone else is still weighing up pros and cons. Its strength is initiative. Its weak spot is everything that comes after (the short version, and the other eleven signs, are in our guide to all 12 zodiac signs).
How do you spot an Aries? In March she opened three tabs of online courses, booked a taster session at the climbing wall, started a podcast with her flatmate and a Duolingo streak in Korean. By April, only the climbing survives (because she likes beating the wall). The rest was dropped without drama — a new project turned up. Her engine is built for the start line.
Her qualities (rather brilliant ones)
- Courage. She speaks first, asks the question everyone's thinking, gets the dance floor going.
- Honesty. If something's wrong, you'll know — usually within the hour.
- Short grudges. She explodes, then forgets. Ten minutes later she's suggesting chips.
- A taste for a challenge. Tell her "you'll never manage it" and you've just handed her a goal.
The clichés that need some nuance
"Aries is selfish." No. Aries thinks in the first person — astrologers call it the "I am" sign — but it's also the one who steps in first when a friend gets talked over in a meeting. Aries defends other people with the same fire it uses for itself.
"Aries is aggressive." Mostly, Aries is direct. It would rather have one frank conversation than three days of atmosphere. What drives it mad is everything left unsaid.
"Aries never finishes anything." Aries finishes what it's passionate about. What makes it drift off is anything that demands patience without offering a challenge (paperwork, projects that drag, relationships going round in circles).
The three decans of Aries: three ways to charge ahead
Each sign covers 30 degrees of the zodiac, and astrology slices it into three 10-degree segments: the decans. The Sun moves about a degree a day, so each decan lasts roughly ten days. Each one gets a planet that colours the sign. The modern triplicity system gives Aries Mars, then the Sun, then Jupiter — the rulers of the three fire signs, in order.
| Decan | Approximate dates | Planet | In a word | The trap |
|---|---|---|---|---|
| 1st | 21 to 30 March | Mars | sprint, instinct, challenge | raw impatience |
| 2nd | 31 March to 9 April | Sun | shine and lead | wounded pride |
| 3rd | 10 to 19 April | Jupiter | explore, travel, believe | promises that are too big |
First decan: Aries with no brakes
Mars squared. This is the Aries of the memes: sends a voice note while you're still typing the question, sprints for a Tube when the next one's in two minutes, finds queues personally offensive. In a crisis (a breakdown, a last-minute disaster, a friend in tears at 2am), this is who you want next to you. The challenge: learning that "later" isn't an insult.
Second decan: Aries in the spotlight
The Sun adds a touch of Leo — this Aries wants the action to be seen. It takes charge of the group, organises the birthdays (Tilly and her karaoke booking, that's this one), and gives enormously when it feels appreciated. The sore spot is ego: public criticism stings far more than a blazing row in private.
Third decan: Aries with an eye on the horizon
Jupiter lends a Sagittarius flavour: this Aries charges towards ideas, travel and causes. There's often a weekend bag that never quite gets unpacked and a petition open on their phone. The risk? Promising the moon (a three-week road trip, a society to set up) — and only then looking at the calendar.
A fair point to add: an older system, the "faces", gives the third decan to Venus rather than Jupiter. People who use it see a more charming, relationship-minded Aries. Both schools coexist, and nothing but practitioners' preference separates them.
Aries and the rising sign: why no two Aries are alike
Two friends born on the same day can have almost nothing in common. Astrology explains that with the rising sign, or ascendant: the sign that was coming up over the eastern horizon at the minute you were born, seen from the place you were born. Because the Earth turns once a day, all twelve signs rise in 24 hours — so the ascendant changes roughly every two hours (a bit more or less depending on the sign and your latitude). No birth time, no rising sign.
In the astrological reading, your Sun sign is what drives you; your rising sign is how you come across at first meeting (our guide to understanding your rising sign's influence goes into the detail). For me, it was my Moon in Scorpio that taught me the Sun sign only tells part of the story. When a friend reads me her horoscope, I think of that layer of intensity nobody sees when they pass me in the street — and that no magazine column could have guessed.
| Rising sign | What it does to Aries |
|---|---|
| Aries | double fire, zero filter |
| Taurus | the handbrake: the drive waits until it's sure |
| Gemini | quick, chatty, three conversations at once |
| Cancer | a fighter for its people, shyer than it looks |
| Leo | charisma, extra-large |
| Virgo | organised fire: a to-do list for every impulse |
| Libra | an iron fist in a velvet glove |
| Scorpio | rare intensity, a will that never lets go |
| Sagittarius | permanent adventure, last-minute departures |
| Capricorn | the Aries that finally accepts the long game |
| Aquarius | the rebel who charges for an idea, not for itself |
| Pisces | veiled fire, angriest on other people's behalf |
A nuance people forget: in traditional astrology, Mars also ruled Scorpio. Hence Aries–Scorpio pairings (as rising sign, Moon or couple) being described as two sides of the same warrior — one fights in broad daylight, the other as a strategist.
Aries in love: the spark, the chase, and what comes next
Aries falls in love the way it does everything: fast, hard, front row. It's often the one who sends the first message, suggests the first drink, says "I love you" first (sometimes a bit early, let's be honest). It adores the chase. It can't stand games — keep an Aries waiting three days "to seem mysterious" and she'll have met someone else at karaoke.
Things get trickier after the first few months. Once the relationship settles, Aries needs the momentum to carry on in a different form: shared projects, spontaneous weekends away, conversations with a bit of edge. A bored Aries couple throws sparks.
An Aries needs straight talk, her own evenings, friends and projects, some play (a Monopoly grudge match, a race to the bus stop, a silly bet) and someone who notices what she dares to do. Total fusion suffocates her, and a silence "to keep the peace" weighs on her far more than a truth said to her face.
What hurts her
Indifference, far more than anger. Passive aggression, which she can't decode. Control, above all — telling her what to wear, who to see, when to come home is the quickest way to watch her leave. And mocking her enthusiasms ("another new project?") lands harder than she lets on.
When it comes to rows, remember one thing: Aries anger is a flash in the pan. Up in ten seconds, gone in ten minutes. A partner who sulks for three days is on a completely different clock — and that's where couples come unstuck. The tools in our guide to couple communication techniques that actually work ("I" rather than "you", a pause before replying) are worth more than every horoscope going.
Aries compatibility: a ranking with reasons
In astrology, compatibility between two signs starts with geometry. Signs 120 degrees apart form a trine, 60 degrees a sextile, 180 degrees an opposition, 90 degrees a square — the angle of tension. Applied to Aries: a trine with the other fire signs (Leo, Sagittarius), a sextile with two air signs (Gemini, Aquarius), an opposition with Libra, and a square with Cancer and Capricorn.
| Sign | Link | What works | What grates | My score |
|---|---|---|---|---|
| Aries | same sign | wild energy | two bosses, no brakes | 3/5 |
| Taurus | neighbours | Taurus grounds, Aries pulls | slow versus fast | 2.5/5 |
| Gemini | sextile | laughter, debate, surprise | both get bored quickly | 4/5 |
| Cancer | square | fierce mutual protection | bluntness bruises | 2/5 |
| Leo | trine | passion, mutual admiration | battle of egos | 4.5/5 |
| Virgo | quincunx | Virgo organises what Aries starts | criticism versus impatience | 2/5 |
| Libra | opposition | opposites attract | one dithers, one decides | 3.5/5 |
| Scorpio | quincunx | intensity, the same traditional ruler | jealousy versus freedom | 3/5 |
| Sagittarius | trine | adventure, humour, freedom | nobody does the admin | 4.5/5 |
| Capricorn | square | a structure for the drive | long game versus right now | 2.5/5 |
| Aquarius | sextile | shared causes | warmth versus distance | 4/5 |
| Pisces | neighbours | tenderness, imagination | one pushes, one withdraws | 2.5/5 |
My scores aren't verdicts. They show where the friction will be easy and where it'll take work. A square means friction, and some friction makes for brilliant couples (ask any Aries–Capricorn pair who've learned to split the roles).
And what does science say?
Nothing encouraging for compatibility charts. David Voas, of the University of Manchester's Centre for Census and Survey Research, went through the birthdays of every husband and wife recorded in the 2001 census for England and Wales — more than ten million married couples. His test of astrological "love signs" finds that sun sign has no impact on who marries whom, or on who stays married. His verdict: "lonely hearts who worry about the zodiac are wasting their time." So nothing suggests Aries–Cancer couples are any less likely to marry, or to stay married, than anyone else.
I once knew someone who swiped left on dating profiles purely because of their Sun sign. I laughed at first. Then I wondered how many good stories had been binned over a birth date. In real life, compatibility gets built — shared values, a way of arguing that doesn't break anything, wanting to head in the same direction.
Aries at work and with money: starting, negotiating, going the distance
At work, Aries is the team's battering ram. It gets projects moving, unblocks things, speaks up when nobody else dares. In a crisis, it's gold: decides fast, takes responsibility, gets on with it. Routine, on the other hand, wears it down at spectacular speed, and meetings that go round in circles make it want to climb out of the window.
The jobs that suit Aries share a common thread — movement, challenge, autonomy: running a business, emergency services, sport, sales, reporting, events. I went through the options sign by sign in our guide to which job suits your star sign; for Aries, the short version is that it thrives wherever it's expected to be bold.
Negotiation is one of its superpowers, if it's channelled. Aries isn't afraid to ask — a huge advantage in front of an employer. The classic mistake: going in on pure energy, without figures, and getting irritated when the answer takes a while. Before your annual review, read up on proven techniques for negotiating your salary: Aries nerve plus solid numbers is a formidable combination.
With money, Aries spends the way it lives — on impulse. A return to Edinburgh booked on a lunch break "because it had to happen", trainers for a fitness challenge that never gets started, a block of boxing classes paid upfront. It often earns well because it dares to ask, but saving comes less easily. Saving is the art of patience.
The Aries temper: a user's guide (for her and for everyone around her)
Mars rules Aries, and Mars is the god of war — so astrology links the sign to a temper that's quick, hot and fast to burn out. In real life, the group's Aries is the one who raises her voice at the till when someone pushes in. Two minutes later she's chatting about the weather with the same person.
That anger has its uses: it flags an injustice, gets things moving, stops weeks of stewing. It costs a lot when it lands on the wrong people at the wrong moment. The NHS page on managing anger suggests giving yourself time to think before reacting — "try counting to 10 and doing calming breathing exercises" — and exercise to reduce stress. A few habits help, whether you're an Aries or living with one:
- Name it. Saying "I'm angry" out loud already takes the pressure down a notch.
- Move. Walk, take the stairs, get some air. Aries lets off steam through the body.
- Delay the message. Write the furious text in your notes app, not in the chat. Reread it an hour later.
- Come back to it. Once you've calmed down, raise the subject again and say what you meant in the first place.
What astronomy and science say about Aries
I'll be straight with you: astrology hasn't passed the scientific tests, and Aries is no exception. That doesn't stop me finding it a fascinating language for talking about ourselves. But here's what astronomers and researchers found.
During Aries season, the Sun isn't in Aries
Blame the precession of the equinoxes: the Earth's axis slowly wobbles. Western astrologers (known as tropical astrologers) follow the signs, pinned to the equinox, not the stars, and Britannica's entry on the zodiac explains the result: "the constellations have shifted eastward so that the dates of the zodiac signs no longer correspond to the astronomical constellations in which the Sun actually appears." This year, NASA's JPL Horizons ephemeris shows the Sun only reaching the constellation of Aries on the evening of 18 April, so for almost all of "your" month it sits in front of the stars of Pisces.
Carlson's test: astrologers versus chance
In 1985 the physicist Shawn Carlson published a double-blind test in Nature, designed with astrologers' approval. Astrologers were given natal charts and asked to pick the matching personality profile out of three; they had predicted at least 50 per cent success. They scored around one in three — chance level. The conclusion of Carlson's paper doesn't mince words: "astrology failed to perform at a level better than chance."
The "that's so me" effect
Andrew Fraknoi's guide to answering astrology's claims, published by the Astronomical Society of the Pacific, describes an experiment by the French statistician Michel Gauquelin — he sent the detailed astrological profile of one of the worst mass murderers in French history to 150 people, and 94 per cent of them said they recognised themselves in it. Astrological descriptions are broad enough for almost anyone to find themselves in them. That's why an Aries profile feels so accurate — and why a Scorpio one might too.
Britannica's verdict is blunt: astrology "is not supported by science". And yet the same entry notes that in a 2022 poll, 27 per cent of Americans said they believed in astrology — 37 per cent among the under-30s. My take? I read astrology like a good novel: it predicts nothing, but it gives words to things we feel. Saying "I'm very Aries about it" to describe your impatience is a shortcut that opens a conversation. Running your love life on your star sign is handing the steering wheel to a chart.
Aries season 2025: what the sky did after 20 March
Horoscopes love to make the sky sound dramatic. Here are the astronomical facts of this spring (UK times), with what astrologers make of them.
- Thursday 20 March, 09:01 GMT: spring equinox. The Sun enters the sign of Aries.
- Saturday 29 March: new moon at 10:58 GMT and a partial solar eclipse visible from the UK: from London, the Royal Observatory's March 2025 night sky guide put the peak at 11.03am, with 30 to 40 per cent of the Sun hidden. For astrologers, a new moon in Aries — the classic symbol of fresh starts.
- Monday 7 April: Mercury, which had seemed to be moving backwards since 15 March, turns direct in ecliptic longitude — the measure astrologers use. So much for "Mercury retrograde".
- Overnight 12–13 April: Venus follows suit and moves forward again in longitude.
- Sunday 13 April, 01:22 BST: full moon, according to the US Naval Observatory's moon phase data for spring 2025 (00:22 universal time). The Moon sits opposite the Sun, so in Libra for astrologers — the "me / us" axis.
- Friday 18 April, evening: the Sun finally reaches the constellation of Aries, the day before the astrological season ends.
That April full moon has a lovely old name: the Royal Observatory's guide to the names of the full moons explains that "Northern Native Americans call April's full moon the pink moon after a species of early blooming wildflower." It's a good night for a review. What have you started since 20 March? What's still standing? What did you drop along the way, and do you miss it? Three very Aries questions — and useful ones, whether or not you believe in the stars.
Frequently asked questions
What are the exact dates of the Aries star sign?
From 20 or 21 March to 19 or 20 April, depending on the year. The sign begins at the spring equinox: in 2025, on 20 March at 09:01 GMT. Born on a changeover day? Only a chart calculated with your birth time can settle it.
How do I know which Aries decan I am?
Look at your Sun's position in degrees on your birth chart: 0 to 9 is the first decan (Mars), 10 to 19 the second (Sun), 20 to 29 the third (Jupiter, or Venus in another school). In dates, that's roughly 21 to 30 March, 31 March to 9 April, then 10 to 19 April.
Which signs are most compatible with Aries?
By astrological logic, Leo and Sagittarius (fire), then Gemini and Aquarius (air). Libra, its opposite, creates a strong pull but needs adjustments. A study of more than ten million married couples in England and Wales found no effect at all, so keep them for fun conversations.
Which sign does Aries get on with least?
Astrologers often name Cancer and Capricorn (square) and Virgo (quincunx). These are relationships of friction: Aries charges, the other protects, plans or corrects. Friction doesn't mean failure.
Are Aries women faithful?
No Sun sign predicts fidelity. Astrology paints a woman who can't bear boredom or things left unsaid, but that's a portrait, not a forecast: fidelity depends on what two people say to each other and promise each other.
How can I find my rising sign without a birth time?
Not reliably: it changes sign roughly every two hours. If you were born in Scotland, your birth entry records the time. In England and Wales it usually doesn't, so ask family members who were there and look through any baby paperwork that was kept. Without a time, astrologers work from a "solar" chart, with no rising sign.
Why doesn't my Aries horoscope sound like me?
A magazine horoscope only uses your Sun sign, sometimes your decan. Your rising sign, Moon and planets change the picture a lot. And according to the tests run on astrology, general descriptions speak to almost everyone.
Is astrology scientific?
No. Shawn Carlson's double-blind test, published in Nature in 1985, found astrologers did no better than chance at matching a birth chart to the right personality profile. Astrology is a symbolic language for thinking about yourself.
Sources
- US Naval Observatory — Earth's seasons: equinoxes and solstices, 2025
- US Naval Observatory — Moon phases from 20 March 2025
- Encyclopaedia Britannica — Zodiac
- Shawn Carlson — A double-blind test of astrology, Nature 318 (1985)
- David Voas, University of Manchester — Ten million marriages: a test of astrological love signs (2007)
- Andrew Fraknoi, Astronomical Society of the Pacific — Your Astrology Defense Kit
- NHS — Anger: symptoms, self-help and where to get support
- Royal Museums Greenwich — What are the names of the full moons?
- ScotlandsPeople (National Records of Scotland) — Statutory register of births
- NASA JPL Horizons — Mercury's ecliptic longitude, March–April 2025
- NASA JPL Horizons — Venus's ecliptic longitude, March–April 2025
- NASA JPL Horizons — the Sun's constellation, 17–20 April 2025
- Royal Museums Greenwich — Night sky highlights, March 2025