Rising Sign Calculator: Find Your Ascendant

Your rising sign, also called the ascendant, is the zodiac sign that was coming up over the eastern horizon at the moment and place you were born. Enter your birth date, time and place in the calculator above. It gives your rising sign and its degree, the clock times that sign was rising where you were born, and how far out your birth time would have to be to change the answer.

If you do not know your birth time, enter the date and place anyway. The calculator then lists every rising sign for that day with its times, so you can see what each possible hour would give.

What is a rising sign?

The sky appears to turn once a day, so the whole zodiac passes over the eastern horizon every 24 hours. Whichever sign is crossing that horizon when you are born is your rising sign. In astrology it describes the first impression you make, your manner, and how you tend to walk into a new situation. It is read alongside the Sun sign, said to show the core of the character, and the Moon sign, said to show the emotional life.

The rising sign also sets up the rest of a birth chart. The twelve houses are counted from it, which is why two people born on the same day in the same town, a few hours apart, have the same Sun and Moon signs but charts that are laid out differently.

How do I find my rising sign?

You need three things, and unlike the Sun sign or the Moon sign, all three matter:

1. Birth date.
2. Birth time, as exactly as you can find it.
3. Birth place. The town or city is enough. It gives the latitude, the longitude and the time zone, including any daylight saving time that applied that day.

The place is not a formality. At the same instant, a different sign is rising in Tokyo than in Toronto, because the two cities face different parts of the sky.

Why does the rising sign need an exact birth time?

Twelve signs rise in 24 hours, so on average the rising sign changes every two hours, and the ascendant moves about one degree every four minutes. An error of half an hour in the birth time moves it seven or eight degrees, which is often enough to cross into the next sign.

That is why the calculator reports a margin. If it says your birth time would have to be wrong by 50 minutes to change the result, a time written down as "about ten past three" is safe. If it says six minutes, treat both signs as possible.

A worked example

Take someone born in London on 14 March 1992 at 9:30 am. Their ascendant is at 17.7 degrees of Gemini. Gemini was rising in London that morning from 8:33 am to 10:19 am, so the birth time would have to be wrong by 49 minutes for the answer to change. Had they been born at 8:30 am instead, the rising sign would be Taurus.

Do all signs take the same time to rise?

No, and this is the part most explanations leave out. The "two hours each" figure is only an average. How long a sign takes to rise depends on your latitude.

We computed it for the day in the example. On the equator, every sign took between 111 and 128 minutes to rise. In London, at 51.5 degrees north, the fastest sign rose in 52 minutes and the slowest took 170.

In the northern hemisphere the quick risers are Pisces and Aries and the slow ones are Virgo and Libra. In the southern hemisphere it is the other way round. Two things follow from this:

• Some rising signs are more common than others. In Europe and North America, more people have Virgo or Libra rising than Pisces or Aries rising, because those signs spend longer on the horizon each day.
• The margin for error varies. If your rising sign is one of the quick ones for your latitude, your birth time needs to be more exact.

The table the calculator shows is worked out for your own birth place and date, so it reflects these differences.

What if I do not know my birth time?

Enter your date and place and read the timetable. Then narrow it down:

• Your birth certificate. In the United States the long-form certificate normally includes the time. In England and Wales a time is recorded only for twins and other multiple births; in Scotland it is recorded for every birth.
• Hospital or maternity records, a baby book or a birth announcement.
• Family memory. "Early morning" or "just before dinner" cuts twelve possibilities to two or three, and you can read the page for each.
• Sunrise and sunset. If you were born close to sunrise, your rising sign is your Sun sign or the one next to it, because the Sun itself was on the eastern horizon. If you were born close to sunset, it is the sign opposite your Sun sign or next to that.

Some astrologers offer to work a birth time backward from life events, a practice called rectification. It rests on interpretation, not calculation, so we do not offer it here.

Why do rising sign calculators disagree?

The time zone. This is the usual cause. A calculator has to turn your clock time into a moment in Universal Time, which means knowing the time zone and the daylight saving rules for that place in that year. One hour of error moves the ascendant about 15 degrees, half a sign.

The place. A tool that asks only for a country, or uses the capital city, can be out by enough to matter near a boundary.

Tropical or sidereal zodiac. Western astrology uses the tropical zodiac. Vedic astrology uses the sidereal zodiac, which currently sits about 24 degrees earlier, so a Vedic rising sign (the Lagna) is often the sign before the Western one. Our Vedic astrology calculator gives the sidereal Lagna, and tropical vs sidereal explains the difference.

House systems do not change it. Placidus, whole sign and the other house systems divide the chart differently, but they all start from the same ascendant. If two tools disagree about your rising sign, the house system is not the reason.

How accurate is this calculator?

The ascendant is found from the sidereal time at your birth place, which is the standard astronomical method, and the result is good to within about a minute of clock time. Your birth time is the larger uncertainty by a wide margin, which is why the margin is shown with every result.

There is one limit. Inside the Arctic and Antarctic circles the horizon cuts the zodiac at such a shallow angle that some signs rise in a few minutes or not at all, and results for births above about 66 degrees of latitude should be treated with caution.

The calculation runs in your browser. Your birth date and time are not sent to us. The city search sends only the letters you type. More on the method is in sources and methodology.

What does each rising sign mean?

These are the traditional associations, one line each. Follow a link for the full reading.

• Aries rising: energy, momentum and frank directness.
• Taurus rising: a calm, grounded presence that puts others at ease.
• Gemini rising: quick, curious and talkative.
• Cancer rising: gentle, protective and attuned to mood.
• Leo rising: warm and hard to overlook.
• Virgo rising: tidy, observant and modest.
• Libra rising: charming, gracious and even-handed.
• Scorpio rising: intense and quietly powerful.
• Sagittarius rising: open, optimistic and restless for the next thing.
• Capricorn rising: composed, mature and quietly in charge.
• Aquarius rising: friendly, distinctive and a little apart.
• Pisces rising: soft, dreamy and sympathetic.

How does the rising sign fit with the Sun and Moon signs?

Astrologers read the three together and call them the big three. To find the others, use the Moon sign calculator, which tells you whether you need a birth time at all, and the zodiac sign dates for the Sun. To see all three on one wheel, with the houses, use the birth chart calculator. Our guide to Sun sign and Moon sign covers how they are read side by side.

Is the rising sign scientifically real?

Which part of the zodiac was on the horizon at a given time and place is astronomy, and it can be computed exactly. What that says about a person is astrology, a tradition of interpretation that controlled tests have not supported. We present it as an interest and belief framework. Our article is astrology a science? goes through what has been tested.

FAQs

How do I find my rising sign? Enter your birth date, time and place in the calculator on this page. All three are needed, because the rising sign changes about every two hours and is different in different places at the same moment.

Can I find my rising sign without a birth time? Not as a single answer. With the date and place alone the calculator shows a timetable of every rising sign for that day, so you can read the possibilities and narrow them down as you learn more about when you were born.

Is my rising sign the same as my ascendant? Yes. Ascendant is the technical name for the point of the zodiac on the eastern horizon at your birth, and rising sign is the sign that point falls in.

How often does the rising sign change? About every two hours on average, but unevenly. Depending on the latitude a sign can take less than an hour or almost three hours to rise, which is why the calculator shows the times for your own birth place.

Why is my rising sign different in Vedic astrology? Vedic astrology measures the zodiac against the stars, the sidereal zodiac, which sits about 24 degrees earlier than the tropical zodiac used in Western astrology. The rising sign is often one sign earlier as a result.

Can two people born on the same day have different rising signs? Yes, and they usually do. Anyone born more than a couple of hours apart, or at the same moment in a distant place, will have a different rising sign even with the same Sun sign.

About this tool

Built and maintained by the AstrologyBay Editorial Team. The ascendant is computed astronomically, and the rising times quoted on this page were measured with the same code. What a rising sign means is the reading the astrological tradition gives it.