What does TT stand for?
TT stands for "Terrestrial Time (replaced Ephemeris Time, ET)"
How to abbreviate "Terrestrial Time (replaced Ephemeris Time, ET)"?
"Terrestrial Time (replaced Ephemeris Time, ET)" can be abbreviated as TT
What is the meaning of TT abbreviation?
The meaning of TT abbreviation is "Terrestrial Time (replaced Ephemeris Time, ET)"
What does TT mean?
TT as abbreviation means "Terrestrial Time (replaced Ephemeris Time, ET)"