PHK and I are on the same page with this.  By all means announce leap seconds 
with significantly more notice.  - Rob
--

On Aug 2, 2011, at 10:39 AM, Poul-Henning Kamp wrote:

> ...
> I find it much more intesting that Bernard Guinot goes on the record
> on page 183:
> 
>       They are not theoretically predictable, but smooth enough
>       for an empirical prediction to less than ±1 s over 3 years
> 
> and:
>       Tests on real data from 1955 to the present, made by the
>       author, have shown that a linear prediction based on one
>       year of values of UT1 - TAI led to a maximum error less
>       than 0.6 s in two years after the last observed values.
>       After three years, the maximum was 1.0 s.
> 
> So giving us 3 years notice of leap seconds instead of six months
> should be a total no-brainer.

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