tzdata: Time zone database (as files and as a module)

[ apache, data, library ] [ Propose Tags ]

The goal of this package is to distribute the standard Time Zone Database in a cabal package, so that it can be used in Haskell programs uniformly on all platforms.

This package currently ships the 2024a version of the time zone database. The version of the time zone database shipped is always reflected in the version of this package: x.y.YYYYMMDD.z, then YYYYMMDD is the official release date of time zone database.

This version contains the "fat" variant of the time zone files (which is not the default for the upstream since 2020b) to facilitate the transition. The next major version (0.3) will ship the "slim" variant.

See: for more info about the time zone database.

See also the tz package or the timezone-olson and timezone-series packages that provide facilities to use the data shipped here. (The tz package automatically installs this package.)

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Versions [RSS] 0.1.20140324.0, 0.1.20140612.0, 0.1.20141110.0, 0.1.20150129.0, 0.1.20150129.1, 0.1.20150810.0, 0.1.20160417.0, 0.1.20160614.0, 0.1.20161123.0, 0.1.20170320.0, 0.1.20180122.0, 0.1.20180501.0, 0.1.20181026.0, 0.1.20190325.0, 0.1.20190911.0, 0.2.20201016.0, 0.2.20201021.0, 0.2.20211021.0, 0.2.20220315.0, 0.2.20220810.0, 0.2.20220815.0, 0.2.20220923.0, 0.2.20221011.0, 0.2.20221028.0, 0.2.20221129.0, 0.2.20230322.0, 0.2.20231222.0, 0.2.20240201.0 (info)
Dependencies base (>=4 && <5), bytestring (>=0.9 && <0.13), containers (>=0.5 && <0.8), deepseq (>=1.1 && <1.6), tagged (>=0.8.6 && <0.9), vector (>=0.9 && <0.14) [details]
License Apache-2.0
Author Mihaly Barasz, Gergely Risko
Maintainer Janus Troelsen <>
Category Data
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Source repo head: git clone
Uploaded by janus at 2024-02-10T23:09:00Z
Distributions Arch:0.2.20240201.0, LTSHaskell:0.2.20240201.0, NixOS:0.2.20240201.0, Stackage:0.2.20240201.0
Reverse Dependencies 2 direct, 14 indirect [details]
Downloads 19256 total (116 in the last 30 days)
Rating 2.25 (votes: 2) [estimated by Bayesian average]
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Status Docs available [build log]
Last success reported on 2024-02-10 [all 1 reports]

Readme for tzdata-0.2.20240201.0

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Haskell package that distributes the standard time zone database