tzdb

A datetime library for Rust that encourages you to jump into the pit of success.

A timezone data management library for the JVM and Android targeting java.time APIs in Java 8+

Delphi/FPC Time Zone Database

Time Zone lookup library for Delphi and FPC

sbt plugin to create custom timezone db files

Time zone information for Common Lisp projects compiled from the IANA time zone database

Time zone database for embedded systems

Easily parse Time Zone Information Format (TZif) files.

Maintained fork of a lazy loading ZoneRuleProvider for ThreeTenBp.

Delphi/FPC Time Zone Database Project

Delphi module provides a mapping from ISO 3166 country codes to a list of timezone names

Generate POSIX tz string from iana tzdb

A version of IANA tzcode modified to support Nintendo's rule format

timezone database

A memory-safe Rust IANA zic / TZif compiler

Time zone information in friendly JSON for use cases like server-side validation, user input options, etc.

Faithful, memory-safe Rust port of upstream tzselect.ksh — the interactive IANA tzdb timezone selector. Byte-identical prompt/output parity vs the shell oracle.

Rust port of upstream tzcode strftime.c formatting semantics (C/C.UTF-8 locale) — formats an explicit tm, verified field-for-field against a compiled strftime.c oracle. Not a libc/locale formatter.

Faithful Rust port of IANA tzdb checktab.awk — zone.tab / zone1970.tab / zonenow.tab consistency checker

Small, unsafe-free Rust port of upstream tzcode asctime.c — the legacy fixed-format time formatter, verified byte-for-byte against a compiled asctime.c oracle. Not a libc/general formatter.