let f = match fmt("yyyy-MM-dd HH:mm:ss z") {
    Ok(f) => f, Err(err) => {
        println!("Parse fmt error: {}", err);
        return;
    },
};
println!("Formated date: {}", f.format(&Local::now()));

Output:

Formated date: 2020-05-30 13:32:04 +08:00

Format	Date
`yy-M-d'T'H:m:s a z`	`25-1-11T11:46:19 AM +08:00`
`yyyy-MM-dd'T'HH:mm:ss z`	`2025-01-11T11:43:41 +08:00`
`EEE MMM dd yyyy HH:mm:ss z`	`Sat Jan 11 2025 11:44:34 +08:00`
`EEEE MMMM dd yyyy HH:mm:ss z`	`Saturday January 11 2025 11:44:57 +08:00`

format_human(Duration::from_secs(2 * 24 * 60 * 60 + 1));

Output:

2days 0hour 0min 1s

More tests:

https://git.hatter.ink/hatter/simpledateformat/src/branch/master/tests/lib_test.rs

Log

Jun 23, 2020 - v0.1.1
- add simpledateformat::new_with_out_err(&str)
- add impl TryFrom<&str> for SimpleDateFormat