Their accurate methods allowed the Emperor to successfully predict eclipses, one of his ritual duties.

He explained how Stonehenge could have been used as a computer to predict eclipses.

He argued that Stonehenge could have been used to predict eclipses.

In 6th century Greece, this knowledge is used to predict eclipses.

The Chinese were predicting eclipses long before the theory of the invariability of natural law was popular.

He clarified his hypothesis that it was a lunar observatory for predicting eclipses.

They were probably used to predict lunar eclipses.

They were able to plot the motion of planets and predict eclipses.

He also described a mechanical instrument to predict solar and lunar eclipses as seen from Paris.

This is now known as the saros period which is very useful for predicting eclipses.