If you are familiar with Chinese Astrology, then calculating your animal sign in Kigaku follows the same method: by your year of birth.
If you're not familiar with Eastern Astrology, then don't worry. There's a table chart that will help you find your animal sign, star, and element.

People born in the same year don't always have the same characteristics. The season periods they are born in are matched with the elements that defines their characters. The chart below shows it:

Find your Kigaku using the table chart. Then find out more about the star, element, and animal associated with your Kigaku by selecting from the menu below.

This is all i can cover on Kigaku as there is more detail to Kigaku such as the combinations of numbers and colours with animals. You would have noticed in the table chart that an animal can be combined with either one of three stars, depending on the year of birth. I will be uploading compatibility charts when i get around to learning them. :P