What are the twelve constellations based on?

The twelve constellations are calculated according to the Gregorian calendar. In western astrology, constellation 12 is synonymous with the orientation of the universe. When a person is born, the position of each constellation on the ecliptic shows a person's innate character and talent. Zodiac 12 symbolizes the psychological level and reflects a person's behavior. So the ecliptic is divided into 12 constellation, which is called 12 constellation. Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, Pisces.

Ancient western philosophers believed that the four elements that constitute natural objects and derive everything are water, fire, earth and wind.