Astrology Signs and Dates: Complete Zodiac Calendar by Month

Understanding astrology signs dates starts with a simple idea: your Sun sign is based on where the Sun was moving through the zodiac when you were born. In Western, tropical astrology, the Sun travels through 12 equal sign divisions over the course of a year. Each sign has an approximate date range, an element, a modality, and a traditional ruling planet.

This guide provides a fast birthday lookup, a month-by-month zodiac calendar, and context for why boundary dates can differ slightly across sources. Use the chart for a general answer, then check your exact birth details if you were born near a sign change.

Astrology Signs Dates: Full Zodiac Sign Calendar

The following zodiac sign dates are the standard approximate ranges used in Western tropical astrology. The exact moment the Sun enters a new sign can vary a little by year, time zone, and location.

Aries: March 21–April 19

Aries begins the tropical zodiac around the March equinox. As a cardinal fire sign, Aries is commonly associated with initiative, directness, momentum, and a desire to begin. Its placement at the start of the seasonal cycle gives it a symbolic connection to courage, action, and fresh starts.

Taurus: April 20–May 20

Taurus is a fixed earth sign traditionally ruled by Venus. It is often linked with steadiness, practical values, physical comfort, patience, and persistence. Taurus symbolism can also emphasize building resources gradually and appreciating what is reliable.

Gemini: May 21–June 20

Gemini is mutable air, traditionally ruled by Mercury. Its symbolism emphasizes curiosity, communication, flexibility, learning, and exchanging ideas. Gemini is often associated with making connections between people, facts, and different points of view.

Cancer: June 21–July 22

Cancer is a cardinal water sign ruled by the Moon. It is associated with emotional awareness, care, memory, belonging, and protective instincts. Cancer themes often involve home, family history, and creating a sense of safety.

Leo: July 23–August 22

Leo is fixed fire and is ruled by the Sun. It is often described through themes of creativity, visibility, self-expression, warmth, and loyalty. Leo can bring attention to pride, generosity, and the wish to share personal gifts with others.

Virgo: August 23–September 22

Virgo is mutable earth, ruled by Mercury. Common Virgo themes include discernment, skill-building, organization, service, and attention to useful details. This sign is often connected with refining routines and turning observations into practical improvements.

Libra: September 23–October 22

Libra is cardinal air and traditionally ruled by Venus. It is connected with relationships, diplomacy, aesthetics, fairness, and seeking balance between perspectives. Libra symbolism also explores how cooperation and thoughtful comparison can support sound decisions.

Scorpio: October 23–November 21

Scorpio is fixed water, traditionally ruled by Mars. It is associated with depth, concentration, privacy, emotional intensity, and transformation. Scorpio is frequently linked with trust, resilience, and the ability to investigate what lies beneath the surface.

Sagittarius: November 22–December 21

Sagittarius is mutable fire, ruled by Jupiter. Its traditional themes include exploration, meaning, optimism, big-picture thinking, and philosophical inquiry. Sagittarius can symbolize a search for perspective through travel, study, culture, or personal experience.

Capricorn: December 22–January 19

Capricorn is cardinal earth, ruled by Saturn. It is often linked with responsibility, long-term goals, structure, discipline, and steady achievement. Capricorn symbolism focuses on setting realistic standards and making progress through sustained effort.

Aquarius: January 20–February 18

Aquarius is fixed air and traditionally ruled by Saturn. It is associated with independent thinking, communities, ideals, innovation, and social systems. Aquarius can highlight the tension between individuality and a desire to contribute to a larger group.

Pisces: February 19–March 20

Pisces is mutable water, traditionally ruled by Jupiter. It is frequently connected with imagination, compassion, intuition, sensitivity, and fluid boundaries. Pisces themes may include creativity, empathy, reflection, and adapting to changing emotional currents.

Astrology Signs by Month: Quick Birthday Lookup

Looking at astrology signs by month is helpful when you want a quick calendar reference. Every calendar month contains part of two signs, so your specific day of birth still matters.

• January: Capricorn and Aquarius
• February: Aquarius and Pisces
• March: Pisces and Aries
• April: Aries and Taurus
• May: Taurus and Gemini
• June: Gemini and Cancer
• July: Cancer and Leo
• August: Leo and Virgo
• September: Virgo and Libra
• October: Libra and Scorpio
• November: Scorpio and Sagittarius
• December: Sagittarius and Capricorn

These astrology months follow the seasonal cycle used by tropical astrology, not the first day of each calendar month. For example, a January 10 birthday is generally Capricorn, while a January 25 birthday is generally Aquarius.

If you only need a fast answer, enter your birthday into the Sun Sign Calculator. It can help confirm the Sun sign range that applies to your birth date.

How to Use the Zodiac Calendar

Start by finding your birth month in the table, then locate your day within one of the two ranges shown. For birthdays well inside a range, the calendar is usually enough to identify a tropical Sun sign. Someone born on May 8, for instance, falls clearly within Taurus, while someone born on May 28 falls within Gemini.

Use extra care if your birthday is on or close to a transition date, such as March 20 or 21, June 20 or 21, September 22 or 23, and December 21 or 22. These are not necessarily the only dates that require verification, but they are common transition windows. The year of birth matters because the Sun's movement is measured by exact time rather than by a fixed midnight calendar change.

The sign calendar is also useful for learning the order of the zodiac. The sequence always moves from Aries through Pisces, with each sign following the one before it. This order helps explain why neighboring signs can share seasonal themes while still expressing different elements and modalities.

Why Date Ranges Can Vary by a Day

Most printed astrology calendars use rounded date ranges because they are easy to read. However, the Sun does not change signs at midnight in every year. It enters each sign at an exact astronomical moment, known in astrology as an ingress.

That is why astrology dates can occasionally appear one day earlier or later on different websites. A person born near the first or last day listed for a sign should not assume they have two Sun signs. At any precise moment, the Sun occupies one sign in the chosen zodiac system.

To identify a boundary birthday accurately, use:

1. Your full birth date, including year.
2. Your exact or closest-known birth time.
3. Your birth city or location.
4. A calculator that applies the correct time zone and chart settings.

A full Birth Chart Calculator is especially useful for cusp birthdays because it shows the Sun's exact placement along with the Moon, rising sign, houses, and other planets.

What Does “Cusp” Mean?

In everyday astrology language, a cusp birthday means a birth date close to the point where the Sun changes from one sign to the next. It does not mean that a person has two Sun signs at once. The Sun has one exact zodiac position at the moment of birth, even when that position is very close to 0 or 29 degrees of a sign.

People born near a boundary may feel drawn to descriptions of the neighboring sign for many reasons. Their Moon, rising sign, Mercury, Venus, Mars, or other chart placements may be in that sign. A complete chart can therefore provide more context than a Sun-sign description alone.

Tropical Zodiac Signs and Astronomical Constellations

Astrological signs are not identical to the constellations with similar names. Western tropical astrology divides the zodiac into 12 equal sections of 30 degrees each. This framework is tied to the equinoxes and seasonal cycle, with Aries beginning at the March equinox.

Constellations, by contrast, are visible star patterns with uneven sizes. Because of precession, the slow shift in Earth's orientation over time, constellation positions and tropical signs do not align in the same way they once did.

This distinction also explains the frequent Ophiuchus question. Ophiuchus is a real astronomical constellation along the ecliptic, but it is not part of the standard 12-sign Western tropical zodiac. NASA did not change astrology or create a new 13th Sun sign.

Western Tropical vs. Sidereal and Vedic Systems

The dates in this article use Western tropical astrology. Tropical astrology anchors the zodiac to the seasonal points of the year, especially the March equinox.

Sidereal astrology uses a zodiac aligned more closely with stellar positions. Vedic astrology commonly uses a sidereal framework, often with a specific ayanamsha adjustment. As a result, someone's sidereal Sun sign may differ from their tropical Sun sign.

Neither system should be mixed casually when checking a birthday. First decide which tradition you are using, then use a calculator or ephemeris designed for that system. This is another reason two sources can present different date ranges without either necessarily making a simple error.

Elements and Modalities at a Glance

The 12 signs are also organized into four elements and three modalities. These categories add context beyond a basic birthday label.

• Fire signs: Aries, Leo, Sagittarius — action, enthusiasm, inspiration.
• Earth signs: Taurus, Virgo, Capricorn — practicality, stability, material focus.
• Air signs: Gemini, Libra, Aquarius — ideas, communication, connection.
• Water signs: Cancer, Scorpio, Pisces — feeling, intuition, emotional depth.

Modalities describe how a sign tends to approach change:

• Cardinal signs: Aries, Cancer, Libra, Capricorn — initiate.
• Fixed signs: Taurus, Leo, Scorpio, Aquarius — sustain.
• Mutable signs: Gemini, Virgo, Sagittarius, Pisces — adapt.

A Sun sign is a useful starting point, but it is only one part of a natal chart. The Moon, rising sign, planets, houses, and aspects can all add important nuance.

FAQ

What are the 12 astrology signs and dates?

The 12 signs are Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces. Standard Western ranges run from Aries around March 21–April 19 through Pisces around February 19–March 20. Boundary days can shift slightly by year and time zone.

Can zodiac dates change?

The commonly printed dates are approximate. The Sun can enter a sign at a different hour, and occasionally a different calendar date, depending on the year and location. If you were born on a cusp, check your complete birth information with a birth chart calculator or ephemeris.

Which sign belongs to each month?

Each month usually includes two signs. January includes Capricorn and Aquarius, July includes Cancer and Leo, and December includes Sagittarius and Capricorn. The month alone cannot determine your Sun sign; your exact birthday is needed.

Why do different sites list different transition days?

Some calendars round sign changes for simplicity, while others calculate the precise ingress for a specific year and time zone. A one-day difference is most relevant for people born near the transition, not for birthdays in the middle of a sign period.

Find Your Place in the Zodiac Calendar

The standard zodiac calendar is an easy way to identify your likely Sun sign, compare neighboring signs, and understand the yearly order of the 12-sign cycle. Use the approximate ranges for everyday reference, but treat birthdays near a boundary with extra care. Exact birth details provide the clearest answer when a sign transition is involved.