Lib.rs

sunrise

This crate provides a function for calculating sunrise and sunset times using this method.

You can enable the no-std feature if you need it to work in such a context, it will rely on libm instead.

Usage

In order to perform the calculation, you'll need to provide the following:

• the date for which you wish to calculate the times
• the latitude and longitude of the location

Begin by adding this crate to Cargo.toml:

[dependencies]
sunrise = "1.2"

You can use the SolarDay struct to perform computation of an event at a particular place and time:

use chrono::NaiveDate;
use sunrise::{Coordinates, SolarDay, SolarEvent, DawnType};

// January 1, 2016 in Toronto
let date = NaiveDate::from_ymd_opt(2016, 1, 1).unwrap();
let coord = Coordinates::new(43.6532, -79.3832).unwrap();

let dawn = SolarDay::new(coord, date)
    .with_altitude(54.)
    .event_time(SolarEvent::Dawn(DawnType::Civil));