pub fn main() {
  let unixtime = 1362441600000;
  let lat = 48.0;
  let lon = 9.0;
  let pos = sun::pos(unixtime,lat,lon);
  let az  = pos.azimuth.to_degrees();
  let alt = pos.altitude.to_degrees();
  println!("The position of the sun is {}/{}", az, alt);
}