rfc3339

⏰ Type-safe datetimes for Python that get DST right. Rust or pure Python, your choice

CLI tool to convert a natural language date/time string to UTC

Fast and simple datetime, date, time and duration parsing for rust.

A fast pure Swift RFC 3339 timestamp parser

An extremely fast parser and formatter of standardized date and date-times supporting RFC-3339 (ISO-8601 profile) and more.

more than 80 gpl3+ licensed guile scheme libraries

A lexer and parser for ISO 8601, RFC 3339, and IXDTF temporal expressions, built with compiler design principles.

A pure python RFC3339 validator

Rust crate for date, time, and timezone manipulation. Parse, format, validate, and convert RFC 3339 / ISO 8601 with guaranteed round-trip safety.

RFC 3339 Date Parser

Convert an epoch timestamp to a human readable timestamp.

A single C header utility to parse and format RFC 3339 timestamps

⏱ Opinionated Python library to produce and transform timestamps to a strict RFC 3339 format – Date and Time on the Internet.

Parsers for ABNF Syntaxes

Website to convert any datetime string to UTC

UTC-normalized time.Time wrapper for Go with JSON, YAML, text, and SQL boundary support.

Date parsing library supporting the full format RFC3339

Explicit date and time library for Zig with POSIX instants, monotonic clocks, RFC 3339, Gregorian arithmetic, and TZif time zones.

A high-performance, type-safe Ada library for handling time zones using the IANA Time Zone Database. Built with modern software engineering practices including Domain-Driven Design, Clean Architecture, and comprehensive contract-based programming.

Curated list of awesome UTC resources