How do we actually know what the time is? Is there some “master clock” that all time zones are based on? And if so, what does THAT clock refer to?

Question

EDIT: I believe I have kicked a hornet’s nest. Did not expect this to blow up! But I am still looking for the “ur time”. the basis for it all. Like, maybe the big bang, or something.

In: 5399

Answer 1

Time used to be based on the sun, going from sunrise to sunset. But this means days have different lengths in different areas and in different seasons. At some point we all agreed what the worldwide time is and we keep track of that ever since.