The International Space Station also uses UTC as a time standard.Īmateur radio operators often schedule their radio contacts in UTC, because transmissions on some frequencies can be picked up in many time zones. Weather forecasts and maps all use UTC to avoid confusion about time zones and daylight saving time. for flight plans and air traffic control clearances. Simply mouse over the colored hour-tiles and glance at the hours selected by the column. UTC is also the time standard used in aviation, e.g. This time zone converter lets you visually and very quickly convert UTC to EST and vice-versa. For sub-microsecond precision, clients can obtain the time from satellite signals. The accepted worldwide time standard, called Universal Time (UT or UTC), is the same as Greenwich Mean Time (GMT), which is taken from the local time in. If only milliseconds precision is needed, clients can obtain the current UTC from a number of official internet UTC servers. The Network Time Protocol (NTP), designed to synchronize the clocks of computers over the Internet, transmits time information from the UTC system. UTC is used in many Internet and World Wide Web standards. To avoid possible confusion due to time zones and daylight saving time when reporting the occurance of earthquakes, the times. Several jurisdictions have established time zones that differ by an odd integer number of half-hours or quarter-hours from UT1 or UTC.Ĭurrent civil time in a particular Time Zone can be determined by adding or subtracting the number of hours and minutes specified by the UTC offset, which ranges from UTC-12 in the west to UTC+14 in the east (see our interactive map for more details). UTC is commonly referred to as International Time, Universal Time (UT), Zulu Time. Time zones are usually defined as differing from UTC by an integer number of hours, although the laws of each jurisdiction would have to be consulted if sub-second accuracy was required. Local time is based on time zone and Coordinated Universal Time (UTC). Time Zones around the World are expressed using positive or negative offsets from UTC, as in the List of Time Zones by UTC offset. In some countries where English is spoken, the term Greenwich Mean Time (GMT) is often used as a synonym for UTC and predates UTC by nearly 300 years. It is within about 1 second of mean solar timeat Prime meridian, and is not adjusted for Daylight Saving Time. Coordinated Universal Time (abbreviated to UTC) is the primary time standard by which the world regulates clocks and time.
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