Western Zodiac Calendar. There are 12 different horoscope signs, each with its own strengths, weaknesses, traits, desires, and way of viewing the world. Although the exact dates can shift plus or minus a day, depending on the year, here are the general zodiac sign dates used by western (or tropical) astrology:
These western, or tropical, zodiac signs were named after constellations and matched with dates based on the apparent relationship between their placement in the sky. In western astrology, these sun signs or star signs run throughout the 12 months of the year.