Aquarius is the eleventh sign of the zodiac, covering everyone born between January 20 and February 18 — a range most sources agree on, though a handful push the end date to February 19 depending on the year's exact solar calendar.
Aquarius is ruled by Saturn and, in modern astrology, Uranus, carries the fixed air element despite its watery name, and takes its symbol from the water bearer, usually drawn as a figure pouring water from a jar.
This guide covers Aquarius's real dates, why an air sign is named for someone carrying water, the sign's actual personality reputation, its traditional zodiac stone versus the two calendar birthstone months it straddles, and what that means if you're buying jewelry for an Aquarius.
At a glance
- Dates: January 20 – February 18 (a few sources push the end date to February 19)
- Element & ruler: fixed air sign; Saturn is the traditional ruler, Uranus the modern one since its 1781 discovery
- Symbol: the water bearer — most commonly tied to the Greek myth of Ganymede, not to the sign's actual element
- Stone: the traditional zodiac stone is amethyst; the calendar birthstone is garnet (January birthdays) or amethyst (February birthdays)
Aquarius Dates, Element, and Ruling Planet
Aquarius runs from January 20 to February 18 in most modern tropical-zodiac calendars, following Capricorn and carrying the year through the depth of winter toward Pisces. Its element is air, shared with Gemini and Libra, and its modality is fixed — the sustaining, stubborn sign of a season.
That modality is associated with holding a course steady rather than opening (cardinal) or closing it out (mutable). Aquarius sits in the coldest stretch of the year, between the solstice that opens Capricorn and the point where winter starts loosening its grip.
Aquarius is one of only three signs whose rulership was revised after a planet was discovered too late to be assigned in antiquity. The older tradition gives Aquarius to Saturn, the same planet that rules Capricorn, where it's read as discipline and structure.
Once Uranus was discovered in 1781, astrologers reassigned Aquarius to it instead — Uranus governs rebellion, innovation, and sudden change, the usual explanation for Aquarius's reputation as the zodiac's unconventional thinker.
The same thing later happened to Scorpio (reassigned to Pluto) and Pisces (reassigned to Neptune). Most modern astrology writing defaults to Uranus for Aquarius but still credits Saturn as the traditional ruler.
In plain terms: an Aquarius birthday falls in the last twelve days of January or the first eighteen days of February — there's no Aquarius birthday outside January 20 through February 18.
For the full rundown of how Aquarius fits alongside the other eleven signs — dates, elements, and ruling planets side by side — see our zodiac signs by month guide.
The Water Bearer: Where the Aquarius Symbol Comes From
Aquarius takes its name from the Latin word for "water carrier," and its symbol — a figure pouring water from a jar — has more than one Greek myth attached to it, with sources disagreeing on exactly who's doing the pouring.
The most commonly told version names Ganymede, a Trojan youth so beautiful that Zeus had him carried off to Mount Olympus — in most tellings by an eagle, sometimes said to be Zeus himself in disguise — to serve as cupbearer to the gods, pouring their nectar at feasts.
Zeus is said to have placed Ganymede's likeness among the stars as Aquarius, with the neighboring constellation Aquila representing the eagle that brought him there.
A second tradition instead ties the water-pouring figure to a flood story: Deucalion, son of the Titan Prometheus, survived a great deluge with his wife Pyrrha by riding it out in a chest or ship, later landing on Mount Parnassus — a myth structurally similar to Noah's.
Some sources connect this survival story to the sign's water imagery, though the link to the specific pouring-figure symbol is looser and less consistently told than the Ganymede version. A third, more minor version names Cecrops I, an early king of Athens remembered for offering the gods water instead of wine.
The one thing all three versions agree on is the image itself — a glyph of two stacked wavy lines read as flowing water — not which figure it's supposed to depict.
The water-bearer name is also the single most common point of confusion about the sign: despite pouring water, Aquarius is not a water sign astrologically. Its element is air, grouped with Gemini and Libra; the water imagery describes the myth and the glyph, not the element.
Aquarius Personality Traits, Honestly
Folk astrology describes Aquarius as independent, humanitarian, and unconventional — traits tied directly to Uranus's association with rebellion and original thinking.
The same sources are candid about the flip side: Aquarius's reputation for being emotionally detached comes from the same quality that makes the sign "independent," a comfort with standing apart from the group that can read as aloof rather than principled.
Aquarius is also commonly described as intellectually driven and future-focused, more interested in ideas, causes, and how a system could work differently than in day-to-day small talk — a trait writers trace back to Uranus governing innovation rather than Saturn's older, slower-moving discipline.
None of this is a measured personality trait. It's a centuries-old literary archetype built around what the symbol and planet are said to represent, repeated across astrology writing rather than tested against how any specific person actually behaves.
Aquarius's Traditional Stone vs. Its Birthstones
Ask what an Aquarius's "real" stone is and the answer depends on which tradition is being quoted. The older jewelry-trade convention most commonly assigns amethyst to the whole sign as its zodiac stone, regardless of exact birthday.
The newer, calendar-based birthstone list instead follows the month, not the sign: an Aquarius born in the last twelve days of January gets garnet, January's calendar stone, while an Aquarius born any time up to February 18 gets amethyst, February's single modern stone.
Both answers are legitimate — they just come from different traditions that were never reconciled into one official list, so treat either as cultural convention rather than a single settled fact.
Aquarius Compatibility
In traditional Western astrology, Aquarius is said to pair most easily with the other air signs, Gemini and Libra, which share its taste for ideas and conversation, and with the fire signs Aries and Sagittarius, whose energy is read as a good match for its love of causes and big-picture thinking.
Earth and water signs — Taurus, Virgo, Capricorn, Cancer, Scorpio, Pisces — are typically described as a more effortful match, needing more work to bridge Aquarius's need for independence with their own more grounded or emotionally expressive styles.
Aquarius and Leo sit directly opposite each other on the zodiac wheel — both fixed signs, which traditional astrology reads as a magnetic but stubborn pairing: Leo's need to be seen pulling against Aquarius's need to stand apart, with neither side inclined to budge first.
As with every compatibility claim in pop astrology, these are traditional associations passed down through the genre, not a measured outcome for any two real people.
Jewelry and Gifts for an Aquarius
Because Aquarius's stone story genuinely has two honest answers, the safest personalized gift leans on the date rather than guessing at a single gem: a birthstone ring set to the recipient's actual birth month — garnet or amethyst — sidesteps the zodiac-vs-calendar debate entirely.
A water-bearer or wave motif is the more literal nod to the sign itself, and for an Aquarius who'd rather wear a name than a symbol, a custom name necklace suits a sign known for valuing its own identity over anything that follows the crowd.
Frequently Asked Questions
What are the exact dates for Aquarius?
Aquarius runs from January 20 to February 18 in most modern tropical-zodiac calendars. A handful of sources shift the end date to February 19, so if your birthday falls on one of those boundary days, check a chart calculated for your exact birth date, time, and place rather than relying on a general date range.
Is Aquarius ruled by Saturn or Uranus?
Both, depending on which tradition is being used. Saturn is Aquarius's traditional ruler, shared with Capricorn. Uranus became the modern ruler after its discovery in 1781, and most current astrology writing defaults to Uranus — the planet of rebellion and innovation — as the better fit for Aquarius's reputation.
Why is Aquarius called the water bearer if it's an air sign?
The name and symbol come from the myth and glyph — a figure pouring water from a jar, most commonly identified as Ganymede, the cupbearer carried to Mount Olympus by Zeus. That water imagery describes the story behind the symbol, not the sign's element. Astrologically, Aquarius is an air sign, grouped with Gemini and Libra, not a water sign.
What is Aquarius's birthstone?
It depends which list you mean. The traditional zodiac-stone convention assigns amethyst to the whole sign. The modern calendar birthstone list instead follows the birth month: garnet for an Aquarius born in January, amethyst for one born in February.
Which signs is Aquarius most compatible with?
Traditional astrology pairs Aquarius most easily with the other air signs, Gemini and Libra, and with the fire signs Aries and Sagittarius. Its opposite sign on the zodiac wheel is Leo — a pairing traditionally read as magnetic but stubborn, since both are fixed signs resistant to being the one who gives ground first.
