use std::fmt;
use std::fmt::Write;
use chrono::prelude::*;

fn main() {
    let valid_format = Local::now().format("%A, %Y-%m-%d, %H:%M:%S");
    let invalid_format = Local::now().format("%DAG@#$%#^$@#%DR");
    println!("{:#?}\n\n{:#?}", valid_format, invalid_format);
}