What major contributions were made by chaldeans?

The Chaldeans, particularly during the Neo-Babylonian period, made significant contributions to astronomy, mathematics, and literature. They developed advanced astronomical observations, which led to the creation of the lunar calendar and predictions of celestial events. Additionally, they Excelled in mathematics, using a base-60 number system that influenced timekeeping and geometry. Their literary contributions include the Epic of Gilgamesh, one of the earliest known works of literature.