Clocks worldwide have always kept time-of-day.  Astronomers are the canaries in 
the coal mine in this situation.  That astronomers will incur great expense and 
require great effort to fix what ain't broke *does not* imply that everybody 
else is somehow off the hook.

It is this unprecedented proposal to move away from time-of-day that is 
demanding everybody - not just astronomers - go to inordinate lengths.

Also "sounds like" is not a coherent engineering plan.  No community - not even 
the atomic timekeepers themselves - have invested appropriate resources in 
investigating the implications of and mitigation required by this proposal.

Rob Seaman
National Optical Astronomy Observatory
--

On Dec 30, 2011, at 9:30 AM, Peter Vince wrote:

> It sounds like the astronomical community have the systems in place to deal 
> with the erratic rotation of our planet, can they not just leave the rest of 
> us to have a simple timescale - save us all going to inordinate lengths and 
> expense?
> 
> Peter Vince

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