Or perhaps your question was how to make this the new default. Since XEphem is meant to be an exploratory research tool, it never changes the defaults automatically. This allows you to explore without concern about messing things up too badly if you just want to start over.
To make any change(s) the new defaults, see section 8.3.
Summary in this case (of changing Site):
Click Preferences -> Save
Note Main -- Basics is marked, click the box to expand
Note several specific sub resources are marked
You may browse click/unclick any resources in the tree as desired for saving
To save the marked values as new defaults click Save now
?
