Coordinated Universal Time
Primary time standard by which the world regulates clocks and time.- Coordinated Universal Time
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A leap second is a one-second adjustment that is occasionally applied to Coordinated Universal Time (UTC), to accommodate the difference between precise time (International Atomic Time (TAI), as measured by atomic clocks) and imprecise observed solar time (UT1), which varies due to irregularities and long-term slowdown in the Earth's rotation.
Area that observes a uniform standard time for legal, commercial and social purposes.
All time zones are defined as offsets from Coordinated Universal Time (UTC), ranging from UTC−12:00 to UTC+14:00.
Rotation of planet Earth around its own axis, as well as changes in the orientation of the rotation axis in space.
Atomic clocks show that a modern-day is longer by about 1.7 milliseconds than a century ago, slowly increasing the rate at which UTC is adjusted by leap seconds.
ERA = 2π(0.7790572732640 + 1.00273781191135448Tu) radians
UT0 and UT2 soon became irrelevant due to the introduction of Coordinated Universal Time (UTC).
The UTC offset is the difference in hours and minutes between Coordinated Universal Time (UTC) and local solar time, at a particular place.
Calculation of the passage of time based on the position of the Sun in the sky.
The difference between this corrected mean solar time and Coordinated Universal Time (UTC) determines whether a leap second is needed.
Networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks.
NTP is intended to synchronize all participating computers to within a few milliseconds of Coordinated Universal Time (UTC).
High-precision atomic coordinate time standard based on the notional passage of proper time on Earth's geoid.
It is the basis for Coordinated Universal Time (UTC), which is used for civil timekeeping all over the Earth's surface and which has leap seconds.
Members of the European Union conduct a coordinated change, changing all zones at the same instant, at 01:00 Coordinated Universal Time (UTC), which means that it changes at 02:00 Central European Time (CET), equivalent to 03:00 Eastern European Time (EET).
Base unit of time in the International System of Units (SI) (Système International d’unités), commonly understood and historically defined as 1⁄86400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each (24 × 60 × 60 = 86400).
The international standard for timekeeping is Coordinated Universal Time (UTC).