[LEAPSECS] Reliability

[Nero Imhard]

On 2009-01-06, at 22:35, Adi Stav wrote:

> I am trying to identify a requirement for civil time having a low  

> (say,

> below 30 minutes) DUT.


I would say that the actual requirement is for DUT to stay within a  
small interval. Of course this also implies a low DUT, but debating  
the need for a low magnitude tends obscure the real issue: the size of  
the interval within which DUT is allowed to wander.

The assertion has been made that DUT could grow to 30 minutes or even  
an hour just fine because people also tolerate not living exactly on  
the central meridian of their time zone and also cope with DST.

I believe this to be false. People's tolerance for being some fixed  
time offset (modulo 1 DST hour) away from their "time meridian" has  
nothing to do with their tolerance for this value to drift.

N