TdT

Noun

Meaning

(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

Source: WordNet

Synonyms

tt ephemeris time terrestrial time terrestrial dynamical time

Hypernyms

time unit unit of time

Examples

History A definition of a terrestrial time standard was adopted by the International Astronomical Union (IAU) in 1976 at its XVI General Assembly, and later named Terrestrial Dynamical Time (TDT). Source: Internet

Julian dates can be expressed in UT, TAI, TDT, etc. and so for precise applications the timescale should be specified, e.g. MJD 49135.3824 TAI. Source: Internet

They must comply with the Riviere Rouge rules during that phase of the race and with the rules of the TDT during that phase. Source: Internet

Doubts were also expressed about the meaning of 'dynamical' in the name TDT. Source: Internet

TDT is a uniform atomic time scale, whose unit is the SI second. Source: Internet

The offset provided a continuity from Ephemeris Time to TDT. Source: Internet

Close letter words and terms

TDRS TDRSS TDSB tdy TDZ te