The zodiac sign dates run from Aries on about March 21 to Pisces ending around March 20, with each sign lasting roughly 30 days. Your Sun sign is the one whose range contains your birthday. Dates shift by a day from year to year, so if you were born near a boundary, check your birth year, time and place.
Key Takeaways
- The chart: Aries starts around March 21, and every sign runs about 30 days to Pisces around March 20.
- Why they shift: The Sun’s sign change moment moves by hours each year and varies by time zone.
- Cusps: Birthdays within about three days of a changeover are called cusp-born.
- Vedic dates: Sidereal signs begin about 24 days later than Western tropical signs.
- Hold it lightly: The Sun’s position is astronomy; the meanings are symbolic tradition.
What Are the Zodiac Sign Dates?
The zodiac sign dates are the ranges of days during which the Sun is passing through each of the twelve signs. In Western astrology, Aries runs from about March 21 to April 19, and the wheel moves on from there at roughly one sign a month until Pisces ends around March 20. Your sign is the one whose range contains your birthday.
The dates are approximate because the Sun changes signs at a precise moment, not at midnight, and that moment shifts slightly from year to year. If your birthday sits on a boundary, the full answer depends on your birth year, time and place.
| Question | Quick answer |
|---|---|
| What are the Western zodiac sign dates? | Aries starts about March 21 and each sign lasts about 30 days, ending with Pisces around March 20. |
| Why do dates differ between websites? | The Sun’s sign change falls on different days across years and time zones, and sources round differently. |
| What if my birthday is on the boundary? | Use your exact birth year, time and place in a birth chart tool. |
| Do dates change in Vedic astrology? | Yes. Sidereal signs begin about 24 days later than tropical ones. |
| Does the 13th sign Ophiuchus change my date? | No. Astrology does not use Ophiuchus as a sign. |
| Are zodiac dates scientific? | They are astronomical positions of the Sun, but the meanings attached to them are a symbolic tradition. |
Zodiac Sign Dates Chart (Western Tropical)
This is the standard list used by most Western horoscopes and encyclopedias. Ranges include both end days. Where sources disagree, it is usually by one day at a boundary.
| Sign | Dates | Element | Modality |
|---|---|---|---|
| Aries | Mar 21 to Apr 19 | Fire | Cardinal |
| Taurus | Apr 20 to May 20 | Earth | Fixed |
| Gemini | May 21 to Jun 21 | Air | Mutable |
| Cancer | Jun 22 to Jul 22 | Water | Cardinal |
| Leo | Jul 23 to Aug 22 | Fire | Fixed |
| Virgo | Aug 23 to Sep 22 | Earth | Mutable |
| Libra | Sep 23 to Oct 23 | Air | Cardinal |
| Scorpio | Oct 24 to Nov 21 | Water | Fixed |
| Sagittarius | Nov 22 to Dec 21 | Fire | Mutable |
| Capricorn | Dec 22 to Jan 19 | Earth | Cardinal |
| Aquarius | Jan 20 to Feb 18 | Air | Fixed |
| Pisces | Feb 19 to Mar 20 | Water | Mutable |
The pattern repeats every year. The equinox that starts Aries falls between March 19 and 21, so the Aries start date can slide by a day or two depending on the year.
Why Zodiac Sign Dates Shift From Year to Year
A calendar year has 365 days, but the Earth takes about 365 and a quarter days to orbit the Sun. The leap year fixes the calendar, but it also means the moment the Sun reaches 0 degrees of Aries moves later by about six hours each year and then jumps back after a leap day. That is why the March equinox lands anywhere from March 19 to 21. For a month-by-month view of where the changes fall, see zodiac signs by month.
Time zones add another wrinkle. The Sun changes signs at one single moment worldwide, but that moment can fall on different dates in different time zones. Someone born in Sydney and someone born in San Francisco a few hours apart can sit on opposite sides of a sign change.
- Leap years: the exact crossing time moves by a few hours each year and resets every four years.
- Time zones: the same moment can fall on two different calendar dates around the world.
- Rounding: some sources round to whole days, others to the nearest listed range.
The Four Turning Points Behind the Dates
Four of the sign dates are anchored to astronomy. Aries begins at the March equinox, Cancer at the June solstice, Libra at the September equinox and Capricorn at the December solstice. These are called the cardinal signs. They open the four seasons in the northern hemisphere.
| Turning point | Sign that begins | Approximate date |
|---|---|---|
| March equinox | Aries | Between March 19 and 21 |
| June solstice | Cancer | Around June 20 to 22 |
| September equinox | Libra | Around September 22 to 23 |
| December solstice | Capricorn | Around December 21 to 22 |
The remaining eight signs follow in order, about a month apart. Because these four anchors are astronomical, the whole calendar of dates hangs from them.
What Each Date Range Is Traditionally About
Each range of dates is sometimes called a sign season. Here is what astrological tradition associates with each one, so your birthday range has a story and not only a label.
Aries season (Mar 21 to Apr 19)
The start of the astrological year. Tradition links it with new beginnings, bold first steps and the first weeks of northern spring.
Taurus season (Apr 20 to May 20)
A slower, sensory season of gardens, food and building something steady. Tradition associates it with values and comfort.
Gemini season (May 21 to Jun 21)
A restless, talkative season of learning, travel and short trips. Tradition links it with conversation and curiosity.
Cancer season (Jun 22 to Jul 22)
Begins at the June solstice. Tradition links it with home, family, memory and caring for others.
Leo season (Jul 23 to Aug 22)
The height of northern summer. Tradition links it with creativity, play and heartfelt self-expression.
Virgo season (Aug 23 to Sep 22)
The harvest season. Tradition links it with sorting, routines, health habits and being of service.
Libra season (Sep 23 to Oct 23)
Begins at the September equinox. Tradition links it with balance, fairness and partnerships.
Scorpio season (Oct 24 to Nov 21)
A deep autumn season. Tradition links it with endings, honesty and personal transformation.
Sagittarius season (Nov 22 to Dec 21)
A season of big questions, travel plans and optimism as the year draws to a close.
Capricorn season (Dec 22 to Jan 19)
Begins at the December solstice. Tradition links it with structure, goals and responsibility.
Aquarius season (Jan 20 to Feb 18)
A season of ideas, friendships and community, in the deep middle of northern winter.
Pisces season (Feb 19 to Mar 20)
The last season before the wheel resets. Tradition links it with dreams, compassion and rest.
Zodiac Cusp Dates: When You Are Born Between Signs
The word cusp comes from astrology and means the edge between two signs. By convention, people born in about the three days either side of a changeover are called cusp-born. Tradition says they may show traits of both signs. A birth chart shows the Sun in one sign only, so the cusp idea works best as a hint to look at the whole chart.
| Cusp pair | Approximate window |
|---|---|
| Pisces and Aries | Mar 18 to 23 |
| Aries and Taurus | Apr 17 to 22 |
| Taurus and Gemini | May 18 to 23 |
| Gemini and Cancer | Jun 19 to 24 |
| Cancer and Leo | Jul 20 to 25 |
| Leo and Virgo | Aug 20 to 25 |
| Virgo and Libra | Sep 20 to 25 |
| Libra and Scorpio | Oct 21 to 26 |
| Scorpio and Sagittarius | Nov 19 to 24 |
| Sagittarius and Capricorn | Dec 19 to 24 |
| Capricorn and Aquarius | Jan 17 to 22 |
| Aquarius and Pisces | Feb 16 to 21 |
These windows are a common convention, not an official standard. Different astrologers use two to four days.
How to Find Your Zodiac Sign From Your Birth Date
- Write down your birth date, including the year.
- Look it up in the chart above. If it sits comfortably inside a range, you are done.
- If it falls inside a cusp window, find your birth time and place on your birth certificate.
- Enter the date, time and place into a free birth chart calculator. It shows exactly where the Sun was.
- Read the profile of your Sun sign in the complete zodiac signs guide.
- Also look at your Moon and rising signs, which the same tool will show. The rising sign needs a birth time.
Vedic and Sidereal Zodiac Dates
Vedic astrology uses the sidereal zodiac, which keeps the signs aligned with fixed stars. The Earth’s axis wobbles slowly over about 26,000 years, a cycle called precession, and this shifts the equinox against the stars by about one degree every 72 years. The tropical zodiac ignores that drift and stays tied to the seasons. The sidereal zodiac corrects for it.
The gap is currently about 23 to 24 degrees. Because the Sun moves about a degree a day, sidereal sign dates begin roughly 24 days after the tropical ones.
| Sign | Western (tropical) start | Vedic (sidereal) start, approx. |
|---|---|---|
| Aries | March 21 | April 14 |
| Cancer | June 22 | July 16 |
| Capricorn | December 22 | January 14 |
The sidereal start dates are also given by the Hindu solar festivals known as Sankranti, which usually fall on April 14 or 15, July 16 and January 14 or 15. For your own Vedic Sun sign, add roughly three weeks to your Western sign dates and consult a Vedic chart for confirmation.
Zodiac Dates in Other Systems
The Chinese zodiac follows the lunar new year, so its sign changes between late January and mid-February rather than on a fixed date. The Mayan zodiac draws on a 260-day ritual calendar. Neither matches the Western dates, which is why a person can be a Gemini in one system and a different sign in another. Each tradition is its own language.
Zodiac Sign Dates: Honest Limits
The dates are a precise astronomical fact: when the Sun is at which longitude on the ecliptic. What astrology says about each range is symbolic. Scientific tests, including a double-blind study published in Nature in 1985, did not find that sign matches personality better than chance. People who enjoy the zodiac tend to treat it as a conversation starter and a mirror, and that is a perfectly good way to hold it.
If you want a practical use, use your sign dates to mark the turning of the year. Each new sign season is a gentle reminder to pause, notice the light and check in with yourself.
Common Questions About Boundary Birthdays
Born around March 20 or 21?
Pisces ends and Aries begins at the March equinox, which can fall on March 19, 20 or 21 depending on the year and time zone. If you were born on one of those days, the exact answer needs your birth year and time.
Born around December 21 or 22?
Sagittarius ends and Capricorn begins at the December solstice, which falls on December 21 or 22. Again, the answer depends on the birth year, time and place.
Born on February 29?
Leap day babies are always in Pisces, because February 29 falls within the range from February 19 to March 20.
Go Deeper with NLS Mastery: Your Soul’s Blueprint
Once you know your sign dates, this course widens the lens to the full birth chart as a blueprint for your soul’s purpose. Karen Bell teaches it in Your Soul’s Blueprint, part of NLS Mastery. Watch the course preview below.
Frequently Asked Questions
What are the zodiac sign dates?
Aries: Mar 21 to Apr 19. Taurus: Apr 20 to May 20. Gemini: May 21 to Jun 21. Cancer: Jun 22 to Jul 22. Leo: Jul 23 to Aug 22. Virgo: Aug 23 to Sep 22. Libra: Sep 23 to Oct 23. Scorpio: Oct 24 to Nov 21. Sagittarius: Nov 22 to Dec 21. Capricorn: Dec 22 to Jan 19. Aquarius: Jan 20 to Feb 18. Pisces: Feb 19 to Mar 20.
Why do zodiac sign dates change every year?
The Sun changes signs at an exact moment that moves by a few hours each year and resets after a leap year, so the date can slide by a day.
What is the first zodiac sign?
Aries is the first sign. It begins at the March equinox, which falls between March 19 and 21.
What zodiac sign is March 21?
March 21 is usually the first day of Aries, though in some years the Sun enters Aries on March 20.
What is a cusp in astrology?
A cusp is the edge between two zodiac signs. People born within about three days of a changeover are often called cusp-born.
Do zodiac dates differ in Vedic astrology?
Yes. Vedic astrology uses the sidereal zodiac, so sign dates begin about 24 days later than in Western astrology.
Do time zones affect my zodiac sign?
They can. The Sun changes signs at one moment worldwide, but that moment can fall on different dates in different time zones.
Is Ophiuchus a zodiac sign?
No. The Sun passes through the constellation Ophiuchus, but astrology does not count it as a sign.
How do I find out my exact zodiac sign if I was born on a boundary date?
Enter your birth date, time and place into a free birth chart calculator. It shows the exact position of the Sun at your birth.
Are the zodiac dates scientifically accurate?
The Sun’s position is astronomical, but the personality meanings attached to it are a symbolic tradition that scientific tests have not supported.
Sources and Further Reading
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