ET top-level property

TimeInstantUnits ET
final

Ephemeris Time (ET) is the same as TDT: ET = TDT = TT = TAI + 32.184 s. Ephemeris Time was renamed Terrestrial Dynamical Time in 1984 (when Barycentric Dynamical Time was also introduced)

Implementation

// ignore: non_constant_identifier_names
final TimeInstantUnits ET = TDT;