ruby-ephemeris 1.1.0

Usage is simple and straightforward: o = Ephemeris.new(date, lat, lon, tz) ...creates a new ephemeris object for the "date" (a string in ISO format 2020-12-16) by supplying the observer latitude (lat), longitude (lon) and time zone (tz). Example: today = Ephemeris.new("2020-12-16", 59.568, 10.02, 1) You will then have access to the following data: today.sun today.moon today.mercury today.venus today.mars today.jupiter today.saturn today.uranus today.neptune By calling any of these, you will get back an array with the following data: [ra, dec, distance, ra_string, dec_string, rise, transit, set] See Github page for more info: https://github.com/isene/ephemeris