[LEAPSECS] multiple UTCs

[Tom Van Baak]

Anyone specifically using such a "tracking" version of UTC
wants to track earth angle, rather than coordinate with civil
time, so why not just let them use UT1? That way they get
the best precision available, which is currently at the ones
or tens of microseconds level.

What these users want is a get_ut1_timeofday(), which can
easily be implemented, either by a kernel or better yet, an
web-enabled astro-friendly user library.

/tvb