Definitions for "Coordinated Universal Time"
Keywords:  utc, gmt, greenwich, bipm, leap
The time in the zero degree meridian time zone.
A reference time standard established by the CCIR (a predecessor of the ITU) and maintained by the Bureau International des Poids et Mesures (BIPM). Formerly Greenwich Mean Time (GMT).
the time scale available from broadcast time signals. UTC differs from TAI (see International Atomic Time) by an integral number of seconds: it is maintained within ± 0.90 second of UT1 (see Universal Time) by the introduction of one second steps (leap seconds). (See leap second).