- calculating Julian dates
- sun rise/sun set
- moon rise/moon set
- moon phases
- conversions between different times (Local Sidereal Time to Universal Time etc)
- conversions between different positional systems (Right Ascension and Declination to Altitude Azimuth and vice versa)
- and many more
It is early days, and there is not much there at the moment, in fact I am not even sure how to structure the whole thing, but anyway keep an eye on the repo if you want to be kept up to date with it.