Multiple Time Display Converter
The local time is the date and time that is seen by the browser on your computer. All scales will be as accurate as your computer's clock. UTC, Coordinated Universal Time, popularly known as GMT (Greenwich Mean Time), or Zulu time. Local time differs from UTC by the number of offset, + or -, hours of your timezone. GPS, Global Positioning System time, is the atomic time scale
implemented by the atomic clocks in the GPS ground control stations and the GPS satellites themselves. (Get the latest GPS status messages here...) GPS time was zero at 0h 6-Jan-1980 and since it is not affected or altered by leap seconds, GPS is now ahead of UTC by
More information on GPS is available in our GPS Weekly Time Converter. Loran-C, Long Range Navigation time, is an atomic time scale implemented by the atomic clocks in Loran-C chain transmitter sites for navigation systems. Loran time was zero at 0h 1-Jan-1958 and since it is not affected or altered by leap seconds it is now ahead of UTC by
TAI, Temps Atomique International, is the
international atomic time scale based on a continuous counting of the SI second. TAI is currently ahead of UTC by
Terrestrial Dynamical Time (TDT) is dynamical time for geocentric phenomena which replaced Ephemeris Time when the IAU 1976 System of Astronomical Constants was implemented in the Astronomical Almanac in 1984. TDT is independent of the variable rotation of the Earth, and the lengths of the tropical year and synodic month are generally defined in days of 86,400 seconds of international atomic time. TDT is used as the time scale of ephemerides for observations from Earth's surface, and differs from international atomic time (TAI) by an offset of 32.184 seconds (TDT=TAI + 32.184), which varies slightly with time. Biel Mean Time (BMT), also called International Internet Time and SwatchBeat Time, is the same the world over. A different methodology and view is available in our International Time Display. This is a real-time display with no user input functions. You may do manual conversions with our BMT and Internet Time Converter. You can also view our International Time Zone Map. This converter requires the use of Javascript enabled and capable browsers.
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