A Unix timestamp is a numeric representation

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It is based on International on the mean time between two known points in the orbit of the Earth's moon. TAI is one of the most accurate and stable time scales and is supported by the International Bureau of Weights and Measures . Atomic clocks are highly accurate timekeepers that use the natural vibrations of atoms to measure time.

The most common type of atomic clock is the cesium atomic clock, which America Cell Phone Number List uses the vibrations of cesium atoms to keep time. The accuracy of the atomic clock is maintained by the stability of the frequency of the electromagnetic radiation emitted by the cesium atoms. This frequency is so constant that it only changes by a fraction of a second over thousands of years.



The frequency of the electromagnetic radiation is then compared with a quartz oscillator used to control the counter. The counter counts the number of cycles of electromagnetic radiation and this count is used to calculate the time. The counter is constantly adjusted to ensure that it is in sync with the vibrations of the cesium atoms. Modern systems often record times as Unix Timestamps. of a specific time, measured as the number of seconds that have passed since January , at :: UTC. Unix timestamps are widely used in computer systems because they are easy to work with and can be easily compared, sorted, and managed.