gök günlüğü zamanı

listen to the pronunciation of gök günlüğü zamanı
Türkçe - İngilizce
(Astronomi) ephemeris time
A former standard astronomical time scale intended to overcome the drawbacks of irregularly fluctuating mean solar time, superseded in the 1970s
A modern relativistic-coordinate time scale
A highly accurate astronomical system for the measurement of time based on the period of Earth's orbit, but in practice relying on lunar observations and an accurate lunar ephemeris