skatebiker:

1) From what little I know, it would be neither wise nor possible to depend on the GPS fixes established by *other* applications for one's *own* program. In my case, at least, I have used my own code to seek out a GPS fix.

2) The Javascript eclipse code would be interesting to have all on its own, but I doubt that I would be able to easily convert it to Python for use in my own programs. I have already encouraged the writer of 'PyEphem' to consider adding 'eclipse' code to his library, which (theoretically) could ultimately be added to Mephemeris.