Early astronomers witnessed the Sun passing through the Zodiac signs in a year’s time, spending roughly a month in each. As a result, they determined that each constellation covers 30 degrees of the ecliptic.
However, due to a phenomenon known as precession, the positions of the constellations we see now have changed.
The zero point of the Zodiac used to designate the beginning day of spring in the Northern Hemisphere. The vernal equinox happens when the ecliptic and celestial equator collide, according to astronomers.
The zero point existed in Aries around 600 BCE, and it was known as the “first point of Aries.” (See Figure 1). The constellation Aries covered the first 30 degrees of the ecliptic; Taurus covered the next 30 degrees; Gemini covered the next 60 degrees; and so on for all twelve constellations of the Zodiac.
The Earth wobbles around its axis in a 25,800-year cycle, which ancient astrologers were unaware of. The gravitational attraction of the Moon on Earth’s equatorial bulge causes this wobble, known as precession.
This wobble has led the junction point between the celestial equator and the ecliptic to migrate west along the ecliptic by 36 degrees, or nearly one-tenth of the way around, over the past two and a half millennia. This indicates that, in relation to the stars beyond, the signs have moved one-tenthor almost a month around the sky to the west.
For example, persons born between March 21 and April 19 are considered Aries. During much of that time, the Sun was no longer in the constellation of Aries. The Sun is actually in the constellation of Pisces from March 11 to April 18! (See Illustration 2) See also Figure 3, which depicts the equinox precession from 600 BCE to 2600 CE.
The dates when the Sun is truly within the astronomical constellations of the Zodiac, as defined by contemporary constellation borders and corrected for precession, are listed in the table below (these dates can vary a day from year to year).
When precession is taken into consideration, your zodiac sign will most likely be different. And if you were born between November 29 and December 17, your zodiac sign is one you’ve never heard of before: Ophiuchus! After Scorpius, the eliptic crosses across the constellation of Ophiuchus.
Visit the Birthday Sky program to view what the sky looked like on your birthday and to learn more about your “true zodiac sign.”
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Constellations Image Gallery
What are the signs of the zodiac that I belong to?
- Aries is the first sign of the zodiac (March 21April 19)
- Taurus is the sign of the bull (April 20May 20)
- Gemini is a sign of the zodiac (May 21June 20)
- Cancer is a disease that affects people (June 21July 22)
- Leo is a sign of the zodiac (July 23August 22)
- Virgo is the sign of the Virgin (August 23September 22)
- Libra is a sign of the zodia (September 23October 22)
- Scorpio is a zodiac sign that (October 23November 21)
- Sagittarius is the sign of the eagle (November 22December 21)
- Capricorn is a sign in the zodiac that (December 22January 19)
- Aquarius is the sign of the water bearer (January 20February 18)
- Pisces is a water sign (February 19March 20)
What are your three telltale signs?
When most individuals think of astrology, their solar sign is often the first thing that comes to mind. After all, that’s the sign you’d check up when reading your horoscope or researching your cosmic compatibility with your crush. Understanding the differences between your sun, moon, and rising signs is a crucial place to start if you’re ready to delve deeper into your own astrology.
In astrology, your “big three signs” are your sun, moon, and rising sign.
Consider them your most important astrological data. These three signs are quite essential in your horoscope, and each is in charge of a different aspect of your personality and total self. While the sun represents your core self and the moon your inner self, you might consider your rising sign to be reflective of your outward self.
Even if you don’t believe in astrology, it’s just a matter of time before someone asks you for your big three, so now is the time to practice. Let’s go through the basic meanings and differences of the sun, moon, and rising signs so you may start looking into your birth chart and using astrology to your advantage. Continue reading to learn more about this crucial astrological trifecta.