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White Paper

White Paper

Paper Title:

Time scales, their users, and leap seconds

Author:

Seago, John, AGI

Abstract:

Time scales based on Earth rotation (specifically Universal Time, UT1) serve as the traditional astronomical basis of civil time. International Atomic Time (TAI) is also maintained based on the output of atomic frequency standards. Coordinated Universal Time (UTC) is an atomic scale referenced to TAI with epoch adjustments via so-called leap seconds to remain within one second of UT1. Time-scale developments, user requirements, and recent applications are reviewed.

Conference:

N/A

Paper Number:

doi:10.1088/0026-1394/48/4/S09

Citation:

P Kenneth Seidelmann and John H Seago 2011 Metrologia 48 S186 doi:10.1088/0026-1394/48/4/S09

Date:

2011/07

Subject Areas:

Position Papers, Time & Timekeeping

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