I thought I had been able to do this with Guide8b, but maybe I am
confusing it with one of the other planetarium programs I have
tested. I want to create a world map of the earth showing where the
sun is overhead and the regions of daylight and darkness. If
possible, I would like to add the corresponding information for the
earth's moon.

Can this be done in Guide8b? If so, please refresh my memory as to
how to do this. I've used many other programs but, all things
considered, Guide8 is the best hands down!