Air · Fixed
The 12 Zodiac Signs: Dates, Elements and TraitsAquarius
37% · waxing crescent
The Sun is in this sign in 2026
January 20 – February 17
The usual table says : January 20 – February 18
The boundary is an astronomical instant, not a calendar day, so it moves by up to two days across the years. If you were born within a day of one, only your birth time settles it.
- Element
- Air
- Modality
- Fixed
- Ruler
- Saturn · Uranus (modern)
- Polarity
- Day (positive)
- Opposite sign
- Leo
What the tradition says
Fixed air: the sign that holds a position. Aquarius is less the rebel of the popular account than the one who noticed the arrangement was arbitrary and declined to pretend otherwise — which looks like detachment and is usually principle.
In love
Friendship first, and it is not a consolation prize: the people an Aquarius stays with are the ones it finds interesting. Wants room, gives room, and is more wounded by being handled than by being argued with.
At work
Sees the system rather than the task, which makes it valuable where the system is the problem and difficult where the task simply needs doing. Do not ask an Aquarius to defend a rule nobody can justify.
Strengths
independent · original · principled
Difficulties
detached · contrary · stubborn
The three decans
0° – 10°
Saturn
ruler: Aquarius
10° – 20°
Mercury
ruler: Gemini
20° – 30°
Venus
ruler: Libra
Each sign is divided into three ten-degree faces, ruled in turn by the rulers of the three signs of its own element. The decan is a real subdivision of the sign, not a second sign.
With the other eleven
Trine120°
The same element, and it shows. This is the one that asks for no effort: you understand each other without explaining. It is also the one where nobody pushes.
Sextile60°
Elements that get on: fire with air, earth with water. It works well once you start, but you have to start — this one does nothing by itself.
Semisextile30°
The sign next door. You have almost nothing in common — different element, different mode — and yet you keep crossing paths. Neither conflict nor obviousness.
Quincunx150°
Nothing shared at all — not the element, not the mode, not even day and night. This is the one that needs the most translating, and it does not settle on its own.
Square90°
The same mode, elements that pull against each other. It grates — and the grating is what moves things: you do not pick problems up by the same end.
Opposition180°
Face to face, across the whole zodiac. What you leave undone, the other does — which makes it the most magnetic of the seven and the most tiring.
The relationship between two signs is the angle between them, and there are only seven. Same sign, then thirty degrees apart, sixty, ninety, a hundred and twenty, a hundred and fifty, and opposite.
What is measured, then what the tradition makes of it
Work it out for yourself
- Zodiac Sign CalculatorBorn within a day or two of a cusp? Printed date tables are a day out some years — this one uses the Sun's real position.
- Birth Chart CalculatorYour sign is the Sun alone. The whole chart has ten bodies, twelve houses and the angles — and needs your birth time.
- Sun, Moon & Rising Sign CalculatorThe three that a reading usually means by "your sign": Sun, Moon and Rising.
- Zodiac Sign Compatibility CalculatorThe angle between two signs, and what the tradition makes of each of the seven.
Measured, and recounted
The dates, the decan boundaries and the angles to the other signs are computed — from the Sun's real position for the year in question, and from arithmetic. Everything under "what the tradition says" is exactly that: convention, some of it two thousand years old, presented as convention and not as a finding about you.