universal time coordinate
1Universal Time — (UT) is a timescale based on the rotation of the Earth. It is a modern continuation of Greenwich Mean Time (GMT), i.e., the mean solar time on the meridian of Greenwich, and GMT is sometimes used loosely as a synonym for UTC. In fact the… …
2universal time — (often caps.) See Greenwich Time. Abbr.: UT. [1885 90] * * * Mean (solar) time of the Greenwich meridian (0° longitude). Universal Time replaced the designation Greenwich Mean Time in 1928; since 1972 it has been based on international atomic… …
3Coordinated Universal Time — UTC redirects here. For other uses, see UTC (disambiguation). Coordinated Universal Time (abbreviated UTC) is the primary time standard by which the world regulates clocks and time. It is one of several closely related successors to Greenwich… …
4Coordinated Universal Time — n. UNIVERSAL TIME as periodically adjusted to coordinate with atomic clocks: it serves as the official international basis for STANDARD TIME: abbrev. UTC * * * international basis of civil and scientific time, implemented in 1963. The unit… …
5Coordinated Universal Time — n. UNIVERSAL TIME as periodically adjusted to coordinate with atomic clocks: it serves as the official international basis for STANDARD TIME: abbrev. UTC …
6Time from NPL — Map showing the location of the Anthorn VLF transmitter within Cumbria …
7Time standard — A time standard is any officially recognized specification for measuring time: either the rate at which time passes; or points in time; or both. For example, the standard for civil time specifies both time intervals and time of day. A time scale… …
8Time zone — Timezone and TimeZone redirect here. For other uses, see Time zone (disambiguation). Local time redirects here. For the mathematical concept, see Local time (mathematics). This article is about time zones in general. For a list of time zones by… …
9Time — This article is about the measurement. For the magazine, see Time (magazine). For other uses, see Time (disambiguation). The flow of sand in an hourglass can be used to keep track of elapsed time. It also concretely represents the present as… …
10Time travel — This article details time travel itself. For other uses, see Time Traveler. Time travel is the concept of moving between different moments in time in a manner analogous to moving between different points in space, either sending objects (or in… …
