[LEAPSECS] leap smear

[Doug Calvert]

On Sun, Sep 18, 2011 at 11:13 AM, Michael Deckers
<michael.deckers at yahoo.com> wrote:

>

>   There simply is no standard modification of UTC that

>   is a monotone function of TAI, and which is N times

>   continuously differentiable for some N >= 0. Instead, there

>   are several such modifications, used or propsed, such as

>   Google's, the SLS time scale of Markus Kuhn, the

>   modification in SOFA, and the time_t values in UNIX-like

>   operating systems, each especially designed for their

>   usage.

>

What is SOFA?