Because of a man named James Time who came up with the times. ex: 24hr per day, 60min/hr, 60sec/min so on.
(and the real question should be...why was his name James Time?)
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Chronometry.
The time it takes a planet or satellite to revolve once is called its day.
No meridians are called the time meridian. The Greenwich meridian which passes through Greenwich, London is called the prime meridian. From which time zones are calculated.
It is called the gestation period.
The combination of I-Time and E-Time called is called the 'Machine Cycle'
A quantity of time can also be called a duration or a span of time.
The time periods are called quarters and there are four of them.
It's still called a time out, nothing different.
The current era of time will be called the Digital Age.
A time a person rules is called a 'Ruling Period' or 'Reign'
It is Moment
Which phrase defines the time called prehistory
Why is time called the fourth dimension?
It is called "Our Time Now"
Geologic Time. It's called the Geologic Time Scale.
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