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Are There Any Alternate Time Systems in Place?


Besides the most common time standards – such as Coordinated Universal Time (UTC) – there are other time systems used.


Terrestrial Time is one example, as astronomers use it to calculate the position and distance of an object in relation to the Earth’s center and rotation. 


There are other time systems, however. Most of them relate to astronomy and the spatial positioning or distance of objects in space. 


  • Barycentric Dynamical Time (TDB)  
  • Barycentric Coordinate Time (TCB) 
  • Sidereal Time 
  • Geocentric Coordinate Time (TCG)


Related Articles:

What is Terrestrial Time?

What is UTC?

What is a Time Zone?


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