tzif 
A parser for Time Zone Information Format (TZif) files.
Also includes a parser for POSIX time-zone strings, which is used by the TZif parser, but also available separately.
Resources to generate TZif files are provided by the IANA database.
TZif files are also included in some operating systems.
Examples
Parse TZif Files
let data = parse_tzif_file.unwrap;
Parse POSIX time-zone strings
let data =
parse_posix_tz_string.unwrap;
More Information
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