The sun crate is a library for calculating the position of the sun and sun phases (like sunrise, sunset). It is a port of the JavaScript library suncalc.

Example

let unixtime = 1_362_441_600_000;
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}");

// calculate time of sunrise
let time_ms = sun::time_at_phase(unixtime, sun::SunPhase::Sunrise, lat, lon, 0.0);
assert_eq!(time_ms, 1_362_463_116_241);

sun

A Rust port of the JS library suncalc.

Install

Add the following to your Cargo.toml

[dependencies]
sun = "0.3"

Usage

pub fn main() {
  let unixtime = 1_362_441_600_000.0;
  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}");
}