[time-nuts] Re: LTC

Tom Van Baak tvb at LeapSecond.com
Sat Apr 13 12:28:03 UTC 2024


 > What do people on Earth do if they live in someplace like Denver that 
isn't at sea level.

Hal,

Everyone uses UTC, which is already corrected for relativistic effects. 
That's why clocks in Denver and New Orleans and everywhere else agree. 
UTC is not just free running cesium clocks, it's cesium clocks 
referenced to "the rotating geoid", meaning elevation, rotation, even 
oblation, are taken into account. Otherwise it would be chaos as 
everyone with a good clock would disagree on what time it is.

Back to the lunar thread, here's a recent paper on the topic:

"A Relativistic Framework to Establish Coordinate Time on the Moon and 
Beyond"
https://arxiv.org/abs/2402.11150
https://arxiv.org/pdf/2402.11150.pdf

/tvb




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