2,500 years ago, during the “Age of Aries,” the zodiac system was created in Babylonia. It is assumed that the precession of the equinoxes was unknown at the time. In modern use of the coordinate system, the option of interpreting the system as sidereal, with the signs fixed to the stellar backdrop, or tropical, with the signs fixed to the point (vector of the Sun) at the March equinox, is offered.
The tropical technique is used in Western astrology, but the sidereal approach is used in Hindu astrology. As a result, the once-unifying zodiacal coordinate system is gradually drifting apart, with a clockwise (westward) precession rate of 1.4 degrees each century.
This means that the tropical sign of Aries is currently located somewhere within the constellation Pisces, according to the tropical zodiac used in Western astronomy and astrology (“Age of Pisces”).
The ayanamsa, ayan meaning “transit” or “movement,” and amsa meaning “little part,” or the movement of equinoxes in small sections, is taken into account by the sidereal coordinate system. It is unclear when Indians first became aware of the precession of the equinoxes, but Bhskara II’s 12th-century treatise Siddhanta Shiromani contains equations for measuring the precession of the equinoxes, and claims that his equations are based on some lost Suryasiddhanta equations plus the Munjaala equation.
Hipparchus is credited with discovering precession in 130 BC. In the seventh book of his 2nd century astronomical literature, Almagest, Ptolemy draws from Hipparchus’ now-lost work “On the Displacement of the Solstitial and Equinoctial Points,” in which he describes the phenomena of precession and calculates its importance. Ptolemy stated that in Greek mathematical astrology, the zodiac was always started at the vernal equinox, and this point was always referred to as “the first degree” of Aries. Because its starting point travels across the circle of backdrop constellations throughout time, it is known as the “tropical zodiac” (from the Greek word trpos, turn).
In Geminus of Rhodes’ 1st century BC astronomical book, the principle of the vernal point acting as the first degree of the zodiac for Greek astronomers is described. In contrast to the previous Chaldean (Babylonian) system, which placed these points within the zodiac signs, Geminus says that Greek scientists of his period correlate the initial degrees of the zodiac signs with the two solstices and the two equinoxes. This shows that, contrary to popular belief, Ptolemy just defined Greek astronomical conventions and did not invent the tropical zodiac theory.
In his astrological text, the Tetrabiblos, Ptolemy demonstrates that the principle of the tropical zodiac was well known to his forefathers, explaining why it would be a mistake to associate the seasonally aligned zodiac’s regularly spaced signs with the irregular boundaries of the visible constellations:
The equinoctial and tropical points are used to determine the beginnings of the signs, as well as the starts of the terms. This rule is not only stated explicitly by writers on the subject, but it is further demonstrated by the constant proof that their natures, effects, and familiarities have no other origin than the tropics and equinoxes, as has already been demonstrated. And, if other beginnings were permitted, it would either be necessary to exclude the natures of the signs from prognostication theory, or impossible to avoid error in retaining and employing them, because the regularity of their spaces and distances, on which their influence is based, would be invaded and broken into.
In This Article...
When did astrological signs become popular?
Astrology is the study of celestial bodies’ movements and relative placements, which are thought to have an impact on human affairs and the natural world. The 12 zodiac signs, one of the earliest notions of astrology, were devised by the Babylonians around 1894 BC.
What are the 2020 zodiac signs?
According to Western astrology, there are 12 zodiac signs (meaning “signs of the zodiac”) “There are 13 constellations that the Sun travels through each year, not just a circle of animals:
Cancer, Leo, Virgo, Libra, Scorpio, Ophiuchus, Sagittarius, Capricorn, Aquarius, and Pisces.
Unfortunately, astrologers’ dates given to star signs are incorrect, in addition to neglecting Ophiuchus. Here’s what astrology claims happens in the night sky, based on its line-of-sight theory “Insights into people’s moods and fortunes:
The Sun’s position in the sky according to astrology (wrong)
Here’s where and when astrologers pretend the Sun is in the sky, dictating what the majority of people believe their birth star sign is:
- December 22nd to January 19th is Capricorn’s sign.
- January 20-February 18 is the sign of Aquarius.
- February 19March 20: Pisces
- Aries (March 21April 19) is the first sign of the zodiac.
- Taurus (April 20May 20) is the zodiac sign of Taurus.
- May 21June 20: Gemini
- Cancer is on the 21st of June and 22nd of July.
- Leo (July 23August 22) is the sign of the lion.
- August 23September 22: Virgo
- September 23October 22: Libra
- Scorpio: 23rd October 21st November
- November 22December 21: Sagittarius
The Sun’s actual position in the sky (correct)
This is when the Sun is in the constellations, hence your true “star sign,” with some astrological overlap and plenty of surprises:
- January 20February 16: Capricorn
- Aquarius: February 16th through March 11th
- Pisces (March 11April 18) is a water sign.
- April 18May 13: Aries
- May 13June 21: Taurus
- June 21July 20: Gemini
- July 20August 10 (Cancer) (21 days)
- August 10September 16 is the sign of Leo.
- September 16October 30 (45 days!) Virgo
- 30th of October 23rd of November
- Scorpio: November 23November 29 (just a week!) Scorpio: November 23November 29 (just a week!) Scorpio: November 23
- Ophiuchus (not an astrological sign of the zodiac, but very real!): November 29December 17 (not an astrological sign of the zodiac, but very real!)
- December 17th January 20th, Sagittarius
Because the Sun isn’t in the sign of the zodiac when astrology says it is, your horoscope is probably incorrect. Of course, none of this matters, but knowing why will help you have a better knowledge of the globe you live on.
What is the total number of zodiac signs?
Each of the zodiac’s 12 astrological signs is said to occupy 1/12 (or 30) of its vast circle. These symbols no longer match to the astrological constellations where the Sun can be found.
What is the order of the 12 zodiac signs by month?
- 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)
Who developed the 12 signs of the zodiac?
The 12 zodiac signs, with which many people are likely familiar today, were created during this Ancient Greek period.
The signs of Aries (approximately March 21-April 19), Taurus (April 20-May 20), Gemini (May 21-June 20), Cancer (June 21-July 22), Leo (July 23-Aug. 22), Virgo (Aug. 23-Sept. 22), Libra (Sept. 23-Oct. 22), Scorpio (Oct. 23-Nov. 21), Sagittarius (Nov. 22-Dec. 21 These Western, or tropical, zodiac signs were named after constellations and paired with dates based on their apparent relationship to the sun’s position in the sky.
By 1500 BC, the Babylonians had divided the zodiac into 12 equal signs, with constellation names that were similar to those we know today, such as The Great Twins, The Lion, and The Scales, and these were later adopted into Greek divination. These 12 signs were popularized by the astronomer Ptolemy, author of the Tetrabiblos, which became a key work in the history of Western astrology.
“Ptolemy codified the idea that there were 12 signs of the zodiac that were 30 broad, and that the sun travelled through these signs on a regular basis throughout the year,” adds Odenwald. According to the Oxford English Dictionary, the word “zodiac” derives from the Greek, from a term for “sculpted animal figure,” and the sequence in which the signs are normally enumerated also stems from that time period.
What is the origin of horoscopes?
) and extended to India, but it was in Greek society during the Hellenistic period that it took on its Western shape. Astrology was introduced to Islamic culture as part of the Greek legacy, and it was then reintroduced to European society through Arabic studies in the Middle Ages. According to Greek mythology, the sky is split into 12 zodiac constellations, and the bright stars that appear at regular intervals have a spiritual impact on human events. Astrology was also important in ancient China, and it became normal practice in imperial times to have a horoscope cast for each newborn child and for all significant life events. Despite the fact that the Copernican philosophy broke the geocentric worldview required by astrology, interest in the subject has persisted into contemporary times, and astrological signs are still generally considered to determine personality.