Earth Clock was born out of a recognition of the contrast between artificial time and natural time.

In the early morning, birds sing in unison to announce the dawn.
On the opposite side of the globe, the sun sets, and birds return to their nests, announcing the dusk.

However, in cities, which operate around the "clock", we live according to artificially designated time, whether it is day or night.

The universe and planet Earth, is governed by natural time.

The clock is one of the oldest human inventions.