• Documents: https://docs.rs/tzf-rs
• Original Go repo: https://github.com/ringsaturn/tzf
• Binary timezone data: https://github.com/ringsaturn/tzf-rel
• Geometry: use https://github.com/ringsaturn/geometry-rs which is https://github.com/tidwall/geometry's Rust port.

By default, the binary is built as well. If you don't want/need it, then build like this:

cargo build --no-default-features

Or add in the below way:

cargo add tzf-rs --no-default-features

It's expensive to init tzf-rs's Finder/FuzzyFinder/DefaultFinder, please consider reuse it or as a global var. Below is a global var example:

use lazy_static::lazy_static;
use tzf_rs::DefaultFinder;

lazy_static! {
    static ref FINDER: DefaultFinder = DefaultFinder::new();
}

fn main() {
    print!("{:?}\n", FINDER.get_tz_name(116.3883, 39.9289));
    print!("{:?}\n", FINDER.get_tz_names(116.3883, 39.9289));
}

For reuse it, racemap/rust-tz-service is a good example.

A Redis protocol demo could be used here: redizone.

• Ruby, see tzf-rb
• Python, see tzfpy