sign, also known as your Sun sign, is based on a range of dates that lasts about a month. Astrology can provide us some good answers as to why these things happen to us and it guides us on our steps forward. They get angry quickly, but they also forgive easily. The zodiac dates, the signs. Mayan Astrology Mayan astrology is based on the Mayan calendar and it's one of the most forward-thinking kinds of astrology. Indian astrology can reveal our character, guide our future and reveal which are our most compatible signs.