A rust port of the JS library suncalc.
Add the following to your Cargo.toml
[dependencies]
sun = "0.2"
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);
let time_ms = sun::time_at_phase(unixtime, sun::SunPhase::Sunrise, lat, lon, 0.0);
println!("Sunrise is at {}", time_ms);
}