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Coordinated Universal Time and the Leap Second



Judah Levine


I will discuss the considerations that were important in the design of the current version of Coordinated Universal Time. The design includes the addition of additional “leap” seconds to keep Coordinated Universal time within 0.9 s of the UT1 time scale, which is a proxy for the position of the Earth in space. I will describe the advantages and problems associated with the leap second system and a number of changes that have been proposed to the realization of the time scale.
Radio Science


leap second, Coordinated Universal Time


Levine, J. (2016), Coordinated Universal Time and the Leap Second, Radio Science (Accessed June 19, 2024)


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Created December 1, 2016, Updated March 26, 2018