[LEAPSECS] WP7A status and Re: clinical evidence about time and sun

[Tony Finch]

On Fri, 19 Dec 2008, Rob Seaman wrote:

>

> To synchronize two clocks (Earth and Lunar in this case), you can adjust

> the rates on one end or the other, or you can reset the zero point of

> one or the other on some sort of schedule.  Additionally, if the

> differential rates continue to vary, then the scheduling has to vary.

> If the clock rates are too far apart, the best solution is to put two

> clocks on the wall.


As well as the different rates of rotation of the various extra-
terrestrial bodies, isn't there also the problem of differing relativistic
frames of reference? (Is the magnitude of the difference big enough to
matter?) The local atomic clocks on the Moon or Mars will not run at the
same rate as a time signal transmitted from the Earth. So you will need to
put THREE clocks on the wall, or maybe four: local atomic time, local
rotational angle, terrestrial atomic time, and perhaps also terrestrial
rotational angle.

Tony.
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