How to convert Unix time / time since the epoch to standard date and time?
I'm using the chrono crate; after some digging I discovered the DateTime type has a function timestamp() which could generate epoch time of type i64 . However, I couldn't find out how to convert it back to DateTime .
extern crate chrono;
use chrono::*;
fn main() {
let date = chrono::UTC.ymd(2020, 1, 1).and_hms(0, 0, 0);
println!("{}", start_date.timestamp());
// ...how to convert it back?
}
You first need to create a NaiveDateTime and then use it to create a DateTime again:
extern crate chrono;
use chrono::prelude::*;
fn main() {
let datetime = Utc.ymd(2020, 1, 1).and_hms(0, 0, 0);
let timestamp = datetime.timestamp();
let naive_datetime = NaiveDateTime::from_timestamp(timestamp, 0);
let datetime_again: DateTime<Utc> = DateTime::from_utc(naive_datetime, Utc);
println!("{}", datetime_again);
}
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