Dates for Aquarius Zodiac Sign: Birthdays, Season & Cusps

The dates for Aquarius zodiac sign are usually January 20 through February 18 in Western tropical astrology. However, the Sun changes signs at a precise moment each year, so some birthdays near January 19–20 or February 18–19 require a birth-year and time-zone check. The tables below show the exact transition times for 2025–2028, along with Aquarius season, decans, and the difference between Western and Vedic zodiac dates.

Aquarius Zodiac Dates at a Glance

Zodiac detail	Aquarius information
Common Aquarius dates	January 20–February 18
Zodiac symbol	Water-Bearer (♒)
Element	Air
Modality	Fixed
Traditional ruling planet	Saturn
Modern ruling planet	Uranus
Zodiac position	11th sign
Previous sign	Capricorn
Next sign	Pisces

These are conventional Western tropical astrology dates, not a guarantee that every person born on January 20 or February 18 has an Aquarius Sun. For a birthday close to either boundary, the exact moment of the Sun’s transition is more reliable than a generic zodiac calendar.

When Is Aquarius Season in 2027?

Aquarius season begins when the Sun reaches 0° Aquarius in the tropical zodiac and ends when it reaches 0° Pisces. The transition happens at one universal moment, but the calendar date differs by time zone. This is why an American born on a boundary date may see a different date listed by an international astrology website.

For 2027, the Sun enters Aquarius on January 20 at approximately 07:30 UTC and enters Pisces on February 18 at 21:33 UTC. That corresponds to January 20 at 2:30 a.m. Eastern Standard Time and January 19 at 11:30 p.m. Pacific Standard Time for the Aquarius ingress.

Exact Aquarius and Pisces Ingress Times: 2025–2028

The following table gives the tropical zodiac transition times in Coordinated Universal Time (UTC). These are the moments when the Sun enters Aquarius and Pisces, not sunrise times or the start of a calendar day.

Year	Sun enters Aquarius	Sun enters Pisces
2025	Jan 19, 19:59 UTC	Feb 18, 10:06 UTC
2026	Jan 20, 01:44 UTC	Feb 18, 15:51 UTC
2027	Jan 20, 07:29 UTC	Feb 18, 21:33 UTC
2028	Jan 20, 13:21 UTC	Feb 19, 03:25 UTC

Sources: annual astrological ephemeris calendars and published Sun-ingress tables. Times are rounded to the minute; small differhttps://en.wikipedia.org/wiki/Ephemerisences of a minute can occur between calculations or published tables.

How to use the table: Find your birth year and compare your recorded birth time with the two transitions. If you were born before the Sun entered Aquarius, your tropical Sun sign is Capricorn. If you were born after the Sun entered Pisces, your tropical Sun sign is Pisces. Births between those transitions fall within Aquarius.

For a US birth, convert UTC to the local time zone in effect on the birth date, including the correct standard-time or daylight-saving offset. Historical time-zone rules can matter for older birth records.

Aquarius Birth Dates: What If You Were Born on a Cusp?

A cusp birthday is a birthday close to the moment the Sun changes zodiac signs. In popular astrology, people often describe themselves as being “on the Aquarius-Pisces cusp” or “on the Capricorn-Aquarius cusp.” In a tropical birth chart, however, the Sun occupies one sign at a specific instant.

For example, a person born on January 19, 2027, in Los Angeles was born before the Sun entered Aquarius at 11:30 p.m. Pacific Standard Time. Someone born on January 20 after that moment has an Aquarius Sun, assuming the recorded time and location are correct. This is why the year and birth time matter more than a fixed birthday list.

How to confirm your Aquarius Sun sign

1. Find your exact birth date and recorded birth time.
2. Identify the city and time zone where you were born.
3. Look up the Sun’s ingress into Aquarius for your birth year.
4. Compare your birth moment with the ingress time, using the appropriate time-zone conversion.
5. If the birth time is unknown and the Sun changed signs that day, a definitive Sun-sign result may not be possible.

A birth chart calculator using a reliable ephemeris is the easiest way to check a boundary birthday. The Moon sign and rising sign require their own calculations; they cannot be established from the Aquarius date range alone.

Aquarius Decans: Three Parts of the Sign

In Western astrology, each zodiac sign spans 30 degrees and is divided into three 10-degree sections called decans. Astrologers use decans to add another layer of interpretation to a natal chart. The calendar dates below are approximate; the exact boundaries depend on the Sun’s position, not simply the day of the month.

Aquarius decan	Approximate dates	Traditional Chaldean ruler
First decan	Jan 20–29	Venus
Second decan	Jan 30–Feb 8	Mercury
Third decan	Feb 9–18	Moon

These planetary sub-rulers follow the traditional Chaldean face system, described in historical Western astrology and reflected in ‘s decan guide. Some modern astrology sources use a different system, assigning Uranus, Mercury, and Venus to the three Aquarius decans instead. Always identify the system being used when comparing decan interpretations.

The first decan is traditionally associated with Venus, the second with Mercury, and the third with the Moon in the Chaldean system. Astrologers interpret these as different symbolic emphases within https://squarerootsigns.com/moon-sign-calculatorAquarius, not separate zodiac signs. A decan is best determined from the Sun’s exact degree in a birth chart.

Aquarius Dates in Vedic Astrology

The usual January 20–February 18 range refers to the Western tropical zodiac. Vedic astrology commonly uses the sidereal zodiac, which accounts for the difference between the tropical and sidereal reference points. As a result, Aquarius, known as Kumbha Rashi in Sanskrit, is generally associated with a later date range, approximately mid-February to mid-March.

The exact sidereal dates depend on the year and the ayanamsha used in the calculation. For that reason, a Vedic astrology chart may classify someone born in early February as Capricorn (Makara) rather than Aquarius (Kumbha), even when a Western tropical horoscope identifies that person as Aquarius.

If you’re comparing Western and Vedic results, make sure the calculator identifies its zodiac system. The same birth details can produce different sign labels because the two systems use different reference frameworks, not because one calculator necessarily made a mistake.

Aquarius Zodiac Sign: Symbol, Element, and Ruling Planets

Aquarius is represented by the Water-Bearer, a figure associated symbolically with carrying or sharing water. Despite that image, Aquarius is classified as an air sign alongside Gemini and Libra. Its fixed modality is traditionally connected with consistency, persistence, and maintaining ideas or commitments.

In Western astrology, Saturn is the traditional ruler of Aquarius, while Uranus is commonly used as its modern ruler. Astrology associates Saturn with structure and responsibility and Uranus with innovation and unconventional thinking. These are traditional symbolic interpretations, not scientifically validated personality measurements.

The Aquarius constellation is also distinct from the astrological sign. Tropical Aquarius is a 30-degree division of the zodiac, while the astronomical constellation has boundaries that do not match that division exactly. This distinction explains why astronomy resources and horoscope calendars may describe different sky positions without necessarily contradicting each other.

Frequently Asked Questions About Aquarius Dates

What are the dates for Aquarius zodiac sign?

Aquarius dates are usually January 20 through February 18 in Western tropical astrology. The exact Sun-sign boundaries shift from year to year, so people born close to January 19–20 or February 18–19 should check their birth time and location.

Is January 20 Capricorn or Aquarius?

January 20 is usually an Aquarius birthday. However, if the Sun enters Aquarius later that day in the relevant time zone, someone born earlier may have a Capricorn Sun. The exact ingress time for the birth year resolves the question.

Is February 19 Aquarius or Pisces?

February 19 is generally considered a Pisces birthday in common Western zodiac calendars. In some years and time zones, the Sun may enter Pisces on February 18 or 19, so a person born near the transition should check an accurate birth chart.

When does Aquarius season start in 2027?

Aquarius season begins on January 20, 2027, at approximately 07:30 UTC. In Los Angeles, that moment falls at 11:30 p.m. on January 19, 2027, while in New York it falls at 2:30 a.m. on January 20.

What are the three Aquarius decans?

The three Aquarius decans divide the sign’s 30 degrees into three sections of 10 degrees each. Their approximate calendar ranges are January 20–29, January 30–February 8, and February 9–18. Exact boundaries depend on the Sun’s degree and the year.

What are Aquarius dates in Vedic astrology?

Vedic astrology commonly uses the sidereal zodiac, where Aquarius, or Kumbha Rashi, generally falls from around mid-February to mid-March. Exact dates depend on the year and the calculation method, so use a sidereal birth chart for confirmation.

Is Aquarius a water sign?

No. Aquarius is an air sign in Western astrology. Its Water-Bearer symbol can make the classification confusing, but the zodiac element is air, shared with Gemini and Libra.

What planet rules Aquarius?

Saturn is Aquarius’s traditional planetary ruler, while Uranus is its modern ruler in much contemporary Western astrology. The two systems interpret the sign through different but sometimes complementary planetary associations.

Conclusion

The dates for Aquarius zodiac sign are commonly listed as January 20 through February 18, but the precise Sun ingress determines the sign for a boundary birthday. Checking the birth year, time, and location is the most reliable way to distinguish Aquarius from Capricorn or Pisces. The tropical and sidereal zodiac systems also explain why Western and Vedic astrology can give different date ranges.

If you’re exploring your complete zodiac profile, continue with an Aquarius personality guide, an Aquarius compatibility guide, or a Sun, Moon, and rising sign calculator.