The Definition of UTC

Abstract

The current definition of Coordinated Universal Time (UTC) is related to the unpredictable, variable rotation rate of the Earth. This is accomplished by irregular insertions of leap seconds, which create unpredictable discontinuities in the UTC. With the increasing importance of a continuous, uniform time scale for users, it is appropriate to re-examine the current definition of this time scale. There are several ways to address this problem, and it is appropriate that the International Astronomical Union (IAU) establish a working group to investigate the continuing need for leap seconds and possible changes in the definition of UTC.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2000
Accession Number
ADA435902

Entities

People

  • Dennis D. Mccarthy

Organizations

  • United States Naval Observatory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Artificial Satellites
  • Astronomical Phenomena
  • Celestial Navigation
  • Deceleration
  • Discontinuities
  • Electronic Mail
  • Ephemerides
  • Frequency
  • Frequency Standards
  • Global Positioning Systems
  • National Governments
  • Navigation
  • Observation
  • Observatories
  • Rotation
  • Satellite Navigation Systems
  • Standards

Readers

  • Astronomy and Astrophysics.
  • Positioning, Navigation, and Timing (PNT) Technology.
  • Systems Analysis and Design