pub fn datetime_iso_string(
    year: i32,
    month: u32,
    day: u32,
    hour: Option<u32>,
    min: Option<u32>,
    sec: Option<u32>,
    millis: Option<u32>
) -> String
Expand description

Convenience full date + time string (UTC, RFC 3339) constructor so you don’t have to remember the format.