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TDT

TDT

1 9.9
A steady time based on Earth's motion used by astronomers and to guide spacecraft
  • noun
  • Archaic
translation icon : TDT
  • So it's the integral of P of TDT over that interval.

Examples

  • The S equals CP over TDT minus V alpha DP.

  • The financial model assumes a zero percent increase in TDT for three years, a one percent increase in the fourth year, and two percent increases per year after that.

    Blog text (24)
  • Until we have a better worked-out version of TDT and we can prove that formally, it should just be obvious that you do not think about distant blackmailers in sufficient detail that they have a motive to actually blackmail you.

    Blog text (10)
  • The scientist explained how TDT is calculated based on Earth's movement around the Sun.

  • For accurate astronomical observations, TDT is essential for correcting discrepancies in time measurement.

  • Astronomers rely on TDT to ensure precise timing in their research and observations.

Synonyms

TT
vsTDT
  • Specialized
2 9.9

A precise time used by astronomers, based on Earth's orbit, to calculate planet positions

is the general uniform standard rather than a calculation reference
terrestrial time
vsTDT
  • Specialized
1 9.0

A clock system that uses Earth's movement around the Sun and corrects for Earth's irregular motion

is the same standard but called by a technical abbreviation
terrestrial dynamical time
vsTDT
  • Specialized
9.9

A time system based on Earth's orbit used to calculate planet positions

is the same concept expressed with a different technical label
ephemeris time
vsTDT
  • Archaic
9.9

Time measured by Earth's orbit, used for exact calculations of planet positions

focuses on correcting mean solar time variations rather than only uniform scale

Surface Forms

TDT singular
TDTs plural

Morphology

TDT = T + D + T

TDT is an initialism/acronym formed from letters; the letters do not transparently convey the full technical meaning to learners.

Etymology

TDT comes from terrestrial 'of the Earth' and dynamical 'about motion', and it names a time scale tied to Earth's movement. Astronomers use TDT as a steady, corrected clock so measurements match around the world.