At a glance
- In astrology
- Aries is ruled by Mars, opposes Libra, and begins the tropical zodiac at the March equinox.
- Found in
- Zodiac Signs
- Related
- Zodiac, Sun Sign, Moon Sign, Rising Sign
Deeper Almanac guide: Aries zodiac guide. This dictionary entry is a concise definition page; the linked guide remains the long-form topic page.
Aries is cardinal fire and the first sign of the zodiac.
The sign glyph and elemental field orient the archetype without reducing it to a stereotype.
What does your own chart say about you?
Choose love, work or purpose. Your reading is written from your chart. Your reading uses your own birth details.
Walk through Alex’s whole example first
The Road of AgesSee the turning points of your whole life, from your birth date
See your road's shape
Prefer to explore first?
The Road of AgesThe turning points of your whole life, from your own chart
Walk my road
Free, by email
Your daily Almanac letter
One short letter at 7 each morning: the day’s theme read for your own chart, and one thing to do with it.
What sets Aries apart
Aries opens the zodiac because the tropical zodiac is counted from the March equinox, the moment the Sun's apparent path crosses the equator of the sky heading north, taken as 0 degrees of Aries. Its cardinal quality is initiation: of the three fire signs it is the one that starts, where Leo holds and Sagittarius disperses. The Sun is exalted here at 19 degrees in the later tradition, while Saturn falls and Venus is in detriment in the sign opposite her own house of Libra.
- Sun enters: about 20 or 21 March, the equinox
- Span: 0 to 30 degrees of ecliptic longitude
- Exaltation: the Sun, at 19 degrees in the later tradition
- Fall and detriment: Saturn falls here; Venus is in detriment
- Ptolemy's class: a tropical sign, with Cancer, Libra and Capricorn
Often mistaken for something else: The sign is a 30-degree stretch counted from the equinox; the constellation Aries is a group of stars of uneven size that no longer lines up with the sign.
A one-minute story
The Road of the Sun
Where the twelve signs came from, and why they carry the names they do.
Aries in the traditional textbooks
Aries is where the old zodiac starts. Ptolemy begins the year here because the spring equinox opens the season of moisture, and moisture marks the start of life, so spring is infancy in his scheme. Firmicus Maternus gives its Greek name as Crios, the ram, and says equal day and night begin when the Sun enters it. He calls it masculine, fiery, four-footed and royal, and says it is weak in the eyes.
- Ruler: Mars. Ptolemy gives it to Mars because it is dry, and discordant in its distance from the houses of the luminaries. Its detriment is Venus, the ruler of Libra, the opposite sign.
- Exaltation in this sign: the Sun at 19 degrees. Fall in this sign: Saturn at 21 degrees.
- Triplicity (fire): Sun by day, Jupiter by night, Saturn as partner (Dorotheus).
- Nature (Abu Ma'shar): hot, dry, choleric; taste bitter; masculine, diurnal; spring, convertible.
- Ptolemy's class: equinoctial. On the body, its fore parts strengthen the body and its rear parts weaken it.
- Body (Abu Ma'shar): head and face.
- Wind (Firmicus): the north wind.
- Lands (Abu Ma'shar): Babylonia, Persia, Palestine, Azerbaijan.
The bounds and decans of Aries
The widest bound is Mercury's, at 8 degrees, and the narrowest bounds are Mars's and Saturn's, at 5 degrees each. Mars, the ruler of Aries, holds the bound at 21 to 25 degrees and the first decan.
Here are the Egyptian bounds of Aries, counted from 0 degrees of the sign:
- Jupiter: 1 to 6 degrees (6 wide)
- Venus: 7 to 12 degrees (6 wide)
- Mercury: 13 to 20 degrees (8 wide)
- Mars: 21 to 25 degrees (5 wide)
- Saturn: 26 to 30 degrees (5 wide)
Laid over the three decans of Firmicus Maternus and al-Qabisi, they fall like this:
- The first decan, degrees 1 to 10, belongs to Mars. The bounds inside it: Jupiter 1 to 6, Venus 7 to 10.
- The second decan, degrees 11 to 20, belongs to the Sun. The bounds inside it: Venus 11 to 12, Mercury 13 to 20.
- The third decan, degrees 21 to 30, belongs to Venus. The bounds inside it: Mars 21 to 25, Saturn 26 to 30.
The stars of Aries, and what the sources say it symbolizes
Dorotheus says an eclipse in Aries brings distress to sheep, the creatures of the sign. J. H. Hill reads the ram and then the lamb as the symbols of the Age of Aries, which he dates from about 2400 BCE to about 250 BCE, and he reads "Lamb of God" in John 1:29 as an Aries image. That is his argument and historians do not share it.
Ptolemy gave the stars of Aries these planetary natures, in the first book of the Tetrabiblos:
- head, like Mars and Saturn
- mouth, Mercury and some Saturn
- hind foot, Mars
- tail, Venus
The story behind Aries
Aries carries ram symbolism and begins the zodiacal sequence in Western tropical astrology.
The spiritual meaning of Aries
Spiritually, Aries asks what courageous first step is being requested.
Why Aries matters
Aries matters because it marks the beginning impulse in astrology: the moment life says yes before the full map is known.
How to read Aries
Astrologers reach for Aries when interpreting directness, initiative, conflict style, courage, independence, urgency, and the house where a chart begins quickly.
Aries in practice: an example
Aries on the sixth house can make work, health, and routines feel better when there is movement, autonomy, and clear challenge.
Where readings of Aries go wrong
A common error is to reduce Aries to anger. Aries can be honest, protective, innocent, and brave when well directed.
Sources and editorial method
This entry summarizes the tradition in the Almanac's own words; where no source is listed, it is an editorial summary rather than a primary text, and symbolic readings are named as the tradition's, not as fact.
- Source
- The Great Almanac Dictionary
- Category
- Zodiac Signs
- Aliases
- Aries sign, Aries zodiac sign
- Last updated
- 2026-09-26
Read your Aries placements
Aries in a book is one thing; Aries in your own birth chart is your life. The Oracle casts your real chart and tells you what it means for your love, your work, and your year ahead, in conversation. It opens with the 7-day Seeker trial.
Speak with the OracleAries is one placement among fourteen. The Cosmic Codex reads your complete chart across your year, what it means for your love and your work, month by month. Open the Cosmic Codex
Related terms
More in Zodiac Signs
From the reference page to your own chart
Every word here
is in your own chart.
- A personal reading about love, work or purpose, written from your chart
- A practical next step to consider
- It opens with 7 days free, with the AI Oracle and daily guidance
$0 today, then $12/month after 7 days. Cancel anytime.
Common questions
What is Aries?
Aries is the first sign of the zodiac: cardinal fire, ruled by Mars, associated with initiative, courage, immediacy, assertion, and the first spark of action.
Where does Aries come from?
Aries carries ram symbolism and begins the zodiacal sequence in Western tropical astrology.
What does Aries mean in astrology?
Astrologers reach for Aries when interpreting directness, initiative, conflict style, courage, independence, urgency, and the house where a chart begins quickly.
What does Aries look like in a birth chart?
Aries on the sixth house can make work, health, and routines feel better when there is movement, autonomy, and clear challenge.
What does Aries mean spiritually?
Spiritually, Aries asks what courageous first step is being requested.
Free, by email
The Almanac, in your inbox at 7
One short letter at 7 each morning: the day’s theme read for your own chart, and one thing to do with it.
