Skip to content
A pure Haskell parser and renderer for binary Olson timezone files
Branch: master
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Type Name Latest commit message Commit time
Failed to load latest commit information.


On Hackage: timezone-olson

This package provides a parser and renderer for binary Olson timezone files whose format is specified in RFC 8536.

Functions are provided for converting the parsed data into TimeZoneSeries objects from the timezone-series package. On many platforms, binary Olson timezone files suitable for use with this package are available in the directory /usr/share/zoneinfo and its subdirectories on your computer.

See also the timezone-olson-th package for a way to include timezone informaton from a binary Olson timezone file at compile time.

Copyright (c) 2010-2019 Yitzchak Gale. All rights reserved.

For licensing information, see the BSD3-style license in the file LICENSE that was originally distributed by the author together with this file.

This package is part of the time-ng project.

Testing utilities

This package also provides two Haskell files, each of which can be compiled into a command-line utility that might be helpful for testing purposes.

zhdump.hs: A clone of zdump(8), including most of its bugs, that is usually present on systems that have an Olson timezone database, except hzdump takes paths to timezone files instead of timezone identifiers on the command line.

catTZ: Read and parse a timezone file, then render it. With the -i flag, interprets the timezone data as a TimeZoneSeries object before rendering.

You can’t perform that action at this time.