There are approximately 400 high-precision atomic clocks worldwide ... That is why atomic clocks form the backbone of Coordinated Universal Time (UTC) — which is used to set global time zones ...

Generally, there are two methods of defining time, one is based on the local passage of time as measured by atomic clocks ... these two is Coordinated Universal Time (UTC). UTC seconds are ...

That is why atomic clocks form the backbone of Coordinated Universal Time (UTC) — which is used to set global time zones — and GPS (global positioning system) satellites, which rely on atomic ...

By entering the date, time, and location of an event, you can hop on to your little virtual time machine and get a glimpse of the enormous world clock ... references like the atomic standard of ...