Guide

Aries

The first sign of the zodiac, usually dated March 21 to April 19: a cardinal fire sign ruled by Mars, the Ram that starts the astrological year at the spring equinox.

Aries at a glance

Aries is the first of the twelve signs and the start of the zodiac itself: the tropical zodiac is measured from the March equinox, and 0° Aries is the Sun's position at that moment. It is a fire sign, one of three with Leo and Sagittarius, and a cardinal sign, one of the four that begin a season. Its ruler is Mars, its symbol the Ram, and its polarity the active, outward one. The tradition gives it the head among the parts of the body, fitting for a sign so often described as going first. Its opposite sign is Libra, and the tension between them, self and other, runs through much of what astrologers say about it.

The Aries character

Everything in the tradition's reading of Aries follows from beginnings. Fire gives it warmth and spirit, the cardinal mode gives it the urge to start, and Mars gives it nerve. Put together, the sign is read as direct, brave and impatient: quick to act, quick to anger and quick to forgive, more interested in the next challenge than the last one. Astrologers describe Aries at its best as the pioneer, the person who tries first so others can follow, and at its most difficult as the one who charges ahead without checking who is behind. The same honesty that makes an Aries easy to read can make it blunt. Learning to finish, and not only to begin, is the lesson the tradition most often gives the sign.

Aries in love

In relationships Aries is read as the pursuer: fast to show interest, openly affectionate and fond of a little challenge. The tradition pairs it easily with the other fire signs, Leo and Sagittarius, who share its pace, and with Gemini and Aquarius, whose air keeps its fire going. Libra, its opposite, is read as the classic attraction of opposites: Libra brings the patience and diplomacy Aries lacks, while Aries brings the decisiveness Libra finds hard. Cancer and Capricorn square Aries, which astrologers read as chemistry with friction. None of this is fixed. A Sun sign is one factor among many, and the synastry chart compares two whole charts rather than two birthdays.

Aries at work

The tradition's Aries works best where there is something to start, win or fix quickly. Leadership, entrepreneurship, sport, emergency work, the military and any job that rewards courage and speed are the classic suggestions, along with work that lets an Aries be its own boss. Long stretches of routine and slow committees are read as its weak ground, not because it lacks ability but because its energy runs down without a goal. Astrologers also note the Aries habit of doing the hard part first: a sign that is often at its best in the first week of a project and needs a steadier partner for the last.

Aries beyond the Sun sign

Your Sun sign is only one placement. A planet in Aries colors that planet with the sign's directness wherever it falls, and the rising sign often matters as much as the Sun for how you come across. Aries rising is read as a quick, forthright manner and a lot of physical energy; the Moon in Aries as feelings that flare up and pass quickly; Venus in Aries as falling in love fast; and Mars in Aries, Mars in its own sign, as drive at full strength. The birth chart calculator shows every planet's sign at once. The sections below give the Aries dates for the coming years, its compatibility with every sign, its three decans and when the slow planets pass through it.

Aries season dates

Aries season is the part of the year when the Sun is in Aries, and anyone born in it is a Aries. By the US Eastern calendar it began between March 19 and March 21 in the years 1950 to 2049, and ended on April 19 or 20, when the Sun moved on into Taurus: the dates shift by a day with the leap-year cycle and the time zone. Times are US Eastern, to the minute; almanacs can differ by a minute.

YearAries season startsAries season ends
2026Mar 20, 10:46 AMApr 19, 9:39 PM
2027Mar 20, 4:25 PMApr 20, 3:17 AM
2028Mar 19, 10:17 PMApr 19, 9:10 AM
2029Mar 20, 4:02 AMApr 19, 2:55 PM
2030Mar 20, 9:52 AMApr 19, 8:43 PM

Aries compatibility

How Aries relates to each sign by the traditional rule: signs of the same element (four apart) and of friendly elements (two apart) are read as easy, squares and quincunxes as friction, neighbors and opposites as mixed. A whole chart says far more than two Sun signs.

WithRelationRead as
AriesSame signEasy
TaurusNeighboring signsMixed
GeminiSextileEasy
CancerSquareFriction
LeoTrineEasy
VirgoQuincunxFriction
LibraOpposite signsMixed
ScorpioQuincunxFriction
SagittariusTrineEasy
CapricornSquareFriction
AquariusSextileEasy
PiscesNeighboring signsMixed

Aries symbol

♈︎U+2648

The face and horns of a ram. The character is U+2648 (ARIES) in Unicode, which phones usually draw as an emoji.

Every astrology symbol

Aries colors

Popular lists
Lilly, 1647

All four popular lists we compared give Aries red. William Lilly gave Aries “white mixed with red” in 1647, and its traditional ruler, Mars, “red, or iron colour”.

The colors of every sign

The three decans of Aries

Each sign splits into three decans of ten degrees, about ten days of the Sun's stay. The modern system gives each decan a sign of the same element; the older one gives it a planet in the Chaldean order, and the Golden Dawn a tarot card.

DecanModern: sign and rulerChaldean rulerTarot
0° to 10°Aries (Mars)MarsTwo of Wands
10° to 20°Leo (Sun)SunThree of Wands
20° to 30°Sagittarius (Jupiter)VenusFour of Wands

Find your decan

The slow planets in Aries

When Jupiter, Saturn and the outer planets pass through Aries: everyone born in those years shares that placement, with its retrograde loops counted as one stay.

  • Jupiter next in Aries 2034 to 2035Last there 2022 to 2023.
  • Saturn in Aries now, until Apr 13, 2028Last there 1996 to 1999.
  • Uranus next in Aries 2094 to 2102Last there 2010 to 2019.
  • Neptune in Aries now, until Mar 23, 2039
  • Pluto next in Aries 2066 to 2097

Aries in the sky

In 2026 the Sun stands in front of the constellation Aries from Apr 18, 2026 to May 14, 2026, about a month later than the sign's dates: the signs are measured from the equinox, which has drifted west against the stars since the zodiac was named.

The 13 constellations and your sign in the sky

Questions

What are the Aries dates?

Aries is usually dated March 21 to April 19, the part of the year called Aries season. The exact moment moves a little from year to year: from 1950 to 2049 the Sun entered Aries between March 19 and March 21 by the US Eastern calendar, so someone born on a border day should check the minute with the zodiac sign calculator.

What is Aries's element and ruling planet?

Aries is a fire sign of the cardinal mode, ruled by Mars. Fire is read as energy and enthusiasm, the cardinal mode as the drive to begin, and Mars as action and courage, so the three together give the sign its reputation for initiative.

Which signs are most compatible with Aries?

By the traditional rule, Leo and Sagittarius, the other fire signs, and Gemini and Aquarius, in the friendly element of air. Libra, the opposite sign, is read as a strong but demanding attraction.

Why is Aries the first sign?

The tropical zodiac is measured from the March equinox, the point where the Sun crosses the celestial equator northward, and 0° Aries is that point. The astrological year therefore begins with Aries, at the start of spring in the northern hemisphere.