Question: when time was created how did the person know what time it was

James Roberts answered on 12 Mar 2020:

That’s quite a conceptual question! Measurement of time has progressively become more accurate as technology has evolved, and initially was quite crude.

Time has existed since at least the beginning of the universe, around 14 billion years ago. Our solar system, and Earth, only formed around 4.5 billion years ago. Humans have only started measuring time in the last few thousand years, and the earliest methods would use the position of the sun in the sky to roughly tell the time. You can also use the position of the sun and moon to make a calendar of the year. It is only in the past few hundred years that accurate mechanical clocks have existed, and now we have atomic clocks with ridiculous accuracy.