The scientific and technical uses of time and time series data.- The civil and scientific understanding of time - education andoutreach.- The history of time and timepieces, clocks and calendars.- Social, cultural, and religious uses of timing informationHigh-precision time from sundials and the pendulum to atomic clocksand pulsars.- Impact of precise time and frequency measurement in astronomy & basic science.- Earth rotation and time Time and solar-system ephemerides.- The physics of time.
Felicitas Arias, Ph.D., is Director of the Time Department,
International Bureau for Weights and Measures in Sèvres near
Paris.Responsible for the maintenance of Universal Coordinated
Time.
Ludwig Combrinck, Ph.D., is Acting Managing Director of the
Hartebeesthoek Radio Astronomy Observatory (HartRAO), National
Research Foundation, South Africa. His main interests are space
geodesy and general relativity.
Pavel Gabor, Ph.D., is Vice Director of the Vatican Observatory
responsible for its observational facilities in Arizona. He is
involved in the robotic upgrades of three telescopes and other
astronomical instrumentation projects. As a Jesuit priest and an
official of the Holy See, he also studies timekeeping, its history
and symbolism.
Catherine Hohenkerk, HM Nautical Almanac Office (HMNAO), UK
Hydrographic Office, a long standing member of HMNAO, fellow of the
Royal Institute of Navigation, Chair of the long standing IAU
Division Aworking group Standards of Fundamental Astronomy (SOFA)
and President of IAU Division A Commission for Fundamental
Standards.
P.Kenneth Seidelmann, Research Professor of Astronomy at the
Universityof Virginia; former director of astrometry directorate at
the U.S. Naval Observatory, Co-editor of the Explanatory Supplement
to the Astronomical Almanac, Co-author of books on astrometry,
time, and celestial mechanics and astrodynamics, and author of many
scientific papers.
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