Module tz 

Time zone name helpers.

This module exposes UTC_ALIASES and tz_names, used internally by the parser and formatter to recognize IANA time zone identifiers in input strings and to enumerate available zones at runtime.

Behavior by feature

Configuration	tz_names yields
jiff-tz or jiff-tz-bundle (with alloc)	All IANA identifiers from the bundled Jiff TZ database
alloc without jiff-tz	UTC_ALIASES only
no_alloc	UTC_ALIASES only (no heap)

Time zone–aware formatting and calendar math (Dt::to_str_in_tz, Dt::add_hr_tz, etc.) require the jiff-tz feature. tz_names is independent of those APIs but uses the same database when jiff-tz is enabled.

Examples

Iterate over IANA time zone names when jiff-tz is enabled:

use deep_time::tz::tz_names;

let mut found_london = false;
for name in tz_names() {
    if name.as_str() == "Europe/London" {
        found_london = true;
        break;
    }
}
assert!(found_london);

Without jiff-tz, only UTC aliases are returned:

use deep_time::tz::{tz_names, UTC_ALIASES};

let count = tz_names().count();
assert_eq!(count, UTC_ALIASES.len());
assert!(tz_names().any(|n| n.as_str() == "UTC"));

Statics

UTC_ALIASES

Well-known aliases for UTC accepted in parsed date/time strings.

Functions

tz_names

Returns an iterator over known time zone names as LiteStr<49>.