A zodiac cusp refers to the imaginary line that divides consecutive zodiac signs. When any planet is on the verge of entering the next astrological sign, it's said to be on one of astrology's 12 cusps.
Were You Born on a Zodiac Cusp?
The chart below shows approximate cusp dates. If you were born on these dates, your Sun might be on a cusp. However, be aware that the date and time the Sun changes signs vary from year to year; therefore, horoscope cusp dates fluctuate a bit from year to year. If the Sun in your birth chart is at 27, 28, or 29 degrees of a sign, you were born on the cusp. To find the degree of your Sun, you'll need to know your birth time and calculate your birth chart.
How Cusps Work Through the Signs
The logic of cusps can be seen with the progressed Sun. The progressed Sun travels one degree forward in a birth chart every year. If you were born when Sun was on the verge of entering the next sign, at a very young age (0-3 years old), you began integrating some traits and qualities of the following sign into your ever-evolving personality. As you got older, you became a bit of a blend of the two signs.
If you're a Pisces born on the Pisces-Aries Cusp, you'll find that drifting and dreaming isn't always enough. You're a courageous Pisces who's more assertive and action-oriented. You're a Pisces who goes after your dreams.
If you're an Aries born on the Aries-Taurus Cusp, your aggressive "just-do-it" Aries nature is a bit more cautious and stable. You're better with follow through and less impulsive than a typical Aries.
If you're a Taurus born on the Taurus-Gemini cusp, your slow-moving Taurus nature is imbued with intellectual curiosity. You're a flighty Taurus who enjoys talking and being out and about kicking up your heels.
If you're a Gemini born on the Gemini-Cancer cusp, your thoughts are tinged with emotions. You're a Gemini who takes things to heart and finds it more difficult to be intellectually objective.
If you're a Cancer born on the Cancer-Leo cusp, you're less shy, a bit showier, and more inclined to share your gifts and creativity with others. You're courageous and more of a performer than the typical Cancer.
If you're a Leo born on the Leo-Virgo cusp, you're a Leo with perfectionist tendencies. You tend to be shyer, more detailed, and more prone to self-criticism than the average Leo.
If you're a Virgo born on the Virgo-Libra cusp, you're a Virgo who's less critical of yourself and others and more focused on creating harmony and balance in your personal relationships.
If you're a Libra born on the Libra-Scorpio cusp, you know more about others' dark motivations than a typical Libra. You're a Libra whose less social and more suspicious than the typical Libra.
If you're a Scorpio with your Sun on the Scorpio-Sagittarius cusp, you're more happy-go-lucky and optimistic than the average Scorpio. You're a Scorpio who can see the beauty in the ugly and the good in the bad.
If you're a Sagittarius born in the Sagittarius-Capricorn cusp, your need for freedom is tempered with a sense of responsibility and ambition. You're a Sagittarius with a more realistic understanding of limitations.
If you're a Capricorn with your Sun in the Capricorn-Aquarius cusp, your seriousness is balanced with a quirky sense of style and an incisive wit. You're a Capricorn who is less traditional and more eclectic.
If you're an Aquarian with your Sun on the Aquarius-Pisces cusp, you're more compassionate, sensitive, and romantic than the typical Aquarian.
Nothing Can Dim the Light of the Sun
There is really no such thing as a "cusp sign." Like everything in your birth chart, the sign of your Sun is determined by your exact birth time. There's no ambiguity about the Sun's sign position in a calculated birth chart. It will be in one of the 12 zodiac signs. The personality quirks that result from being born when your Sun was on the verge of entering the next sign are never significant enough to greatly change your basic Sun sign personality.