This isn't really creating a "what's in the sky right now" chart (which requires your location & time) so much as a map of the sky based on standard astronomica

This isn't really creating a "what's in the sky right now" chart (which requires your location & time) so much as a map of the sky based on standard astronomical coordinates. These are the sorts of charts you'd see printed in sky atlases, for example, which don't have any relationship to your location or current time.