In case you don't read my other blog, there's a total lunar eclipse tonight visible from central and Eastern US, as well as Western Europe and some other places down South of us all. It starts around 8:40pm (Eastern) and ends around midnight. More info
on my other blog here, or via
Fred Espenak, NASA's Mr. Eclipse.
And this morning I woke up thinking about all the factors that would have to go into a program that could generate this sort of information...