Rising sign calculator: how others see you first

Your rising sign, or Ascendant, is the zodiac sign that was rising over the eastern horizon at the moment you were born. In astrology the Sun stands for your core and the Moon for your feelings, while the rising sign describes how you come across: the first impression you make, the way you approach new things and how you start them.

Many people recognize their rising sign most in unfamiliar situations: the first day at a new job, or a party where they know no one. That is where the rising sign tends to show first, before others get to know the Sun in you.

Seen from Earth, the sky turns around us once a day, so the rising sign moves through all twelve signs, about one sign every two hours on average. Depending on the sign and the latitude, that can be under an hour or over three. If you were born close to a change, five minutes can mean a different rising sign.

That is why we ask how exact your time is. We calculate for the minute you give and for both ends of its margin (± 5, 15 or 60 minutes). If the sign stays the same across that window, we show it as certain, with the times between which your rising sign keeps the same sign. If a change falls inside the window, you see both signs and the time of the change. Without a birth time we do not calculate a rising sign: the card stays sealed.

The Sun stands for who you are at the core and what gives you energy. The Moon for what you need to feel safe and how you react to feelings. The rising sign for the way you meet the world. Together they are called the big three.

An example: a Capricorn Sun with Leo rising often comes across as warm and open, while a serious plan runs in the background. Someone with the Sun and the rising sign in the same sign usually comes across much as they are. That is why this calculator always reveals all three cards.

From the date, time and place we first work out the exact moment of your birth in universal time, using the time zone and daylight saving time that applied at your birthplace back then. If your time falls in an hour that happened twice because the clocks went back, we ask instead of guessing.

For that moment and the coordinates of your birthplace, the Swiss Ephemeris, a library of planetary positions widely used in astrology, gives the point of the ecliptic rising in the east. We use the tropical zodiac of Western astrology, in which Aries begins at the March equinox. We calculate your Sun and Moon the same way. We do not store your details.