Civil time refers to the time kept according to the common practice and convention in a given country or region. Some common synonyms for civil time include standard time, clock time, and local time. These terms are used to describe the official time used for everyday purposes such as scheduling appointments, recording work hours, and setting time limits for events. Other synonyms for civil time include national time, universal time, and coordinated universal time (UTC). Civil time is often contrasted with astronomical time, which is based on the movement of celestial bodies and is used for scientific and navigational purposes.