[LEAPSECS] UT1 offset

[Poul-Henning Kamp]

--------
Warner Losh writes:

> Still, even 50m can be a lot if you are flying over a narrow mountain pass
> in a plane that can't just fly super-high above it...

Celestial navigation requires you to be able to see something through the
windows.

If that is an option the sane pilot would look at the terrain.

Also:  When&where celestial navigation is possible, most vessels
travel a lot further than 50 meters during the time it takes to make
a measurement of the necessary precision.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.