Noun
the official time in a local region (adjusted for location around the Earth); established by law or custom
Source: WordNetOn 1 January 1972, GMT was superseded as the international civil time standard by Coordinated Universal Time, maintained by an ensemble of atomic clocks around the world. Source: Internet
Computers, for example, could use these and convert to UTC or local civil time as necessary for output. Source: Internet
It is the international standard on which civil time is based. Source: Internet
The steady progression of sunset around the world and seasonal changes results in gradual civil time changes from one day to the next based on observable astronomical phenomena (the sunset) and not on man-made laws and conventions. Source: Internet