. "115156746"^^ . . "terrestrial dynamical time"@en-us . "TDT"@en-us . "0"^^ . . . "0"^^ . "TT"@en-us . . "15156746-n"^^ . . . . . . "110877840"@en-us . "ephemeris time"@en-us . "(astronomy) a measure of time defined by Earth's orbital motion; terrestrial time is mean solar time corrected for the irregularities of the Earth's motions"@en-us . . . "terrestrial time"^^ . "114298854"@en-us . . . . . . . . "terrestrial time"@en-us .