<P> Coordinated Universal Time ( abbreviated to UTC ) is the primary time standard by which the world regulates clocks and time . It is within about 1 second of mean solar time at 0 ° longitude ; it does not observe daylight saving time . For most purposes , UTC is considered interchangeable with Greenwich Mean Time ( GMT ) , but GMT is no longer precisely defined by the scientific community . </P>
<P> Coordinated Universal Time ( abbreviated to UTC ) is the primary time standard by which the world regulates clocks and time . It is within about 1 second of mean solar time at 0 ° longitude ; it does not observe daylight saving time . For most purposes , UTC is considered interchangeable with Greenwich Mean Time ( GMT ) , but GMT is no longer precisely defined by the scientific community . </P>
the universal time coordinate is also known as
the universal time coordinate is also known as
Greenwich Mean Time ( GMT )
Greenwich Mean Time ( GMT )