pub fn time_offset_zone(s: &str) -> Option<(i64, Option<i32>, Option<String>)>Expand description
Extract (nanoseconds-of-day, optional offset-seconds, optional zone label)
from ANY temporal string — localtime/localdatetime → offset/zone None;
time → Some(offset), no zone; datetime → offset + optional zone. Used
when projecting a datetime from another value. (ADR 0009)