Rust port of upstream tzcode localtime.c runtime semantics — TZif → local civil time, verified field-for-field against a compiled localtime.c oracle. Not a libc replacement.

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.

Faithful, memory-safe Rust port of upstream tzcode date.c — the small standalone 'tzdate' utility. Verified against the compiled tzcode oracle. Not a date/time library.

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.