Hi Mark,

There are a couple of solutions. As Bob Elliott pointed out,
hitting F3 will do the job. Or you can run animation in "real
time" mode, with a reasonably frequent update rate.

_Or_, I strongly suspect, you can ignore the entire issue.
Guide will send RA/decs to the scope. The RA/dec of stars and
galaxies is (to the level of accuracy of the scope *) independent
of time and location on the earth.

If you're looking at a much nearer object, and didn't have
the time/date or your latitude/longitude set correctly, then
Guide might compute an RA/dec for that object which doesn't
correspond to reality. For the Moon, for example, if you
set Guide to show the universe from the opposite side of the
earth, you might have a two-degree error. Guide would send
the wrong RA/dec to the scope, and you'd be out of luck.

For an artificial satellite, the time should be dead on.
But for almost everything else, ballpark accuracy of a few
minutes in time and a few degrees on the earth's surface ought
to get the scope where it's supposed to go.

-- Bill

(*) If you had Guide set to the year 1000 or 3000, then
stars would be off because a thousand years of proper motion
was thrown into the mix. Arcturus would be almost a degree off;
most fainter stars, less so. Just make sure you haven't been
simulating an ancient eclipse or something just before you
hook up the scope.