On Sun, Nov 4, 2018 at 2:35 PM Dave Horsfall <dave@horsfall.org> wrote:

> UNIX was half a billion (500000000) seconds old on Tue Nov  5 00:53:20
> 1985 GMT (measuring since the time(2) epoch).
>                 -- Andy Tannenbaum
>
> Hmmm...  According to my rough calculations, it hit a billion (US) seconds
> around 2000.
>

It's over a billion and a half today:
% date +%s
1541371441

Warner