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 2023a 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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Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.

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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 (info)
Dependencies base (>=4 && <5), bytestring (>=0.9 && <0.13), containers (>=0.5 && <0.7), 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 <>
Revised Revision 2 made by janus at 2023-09-16T21:56:54Z
Category Data
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Source repo head: git clone
Uploaded by janus at 2023-03-23T01:45:43Z
Distributions Arch:0.2.20230322.0, LTSHaskell:0.2.20230322.0, NixOS:0.2.20230322.0, Stackage:0.2.20230322.0
Reverse Dependencies 2 direct, 13 indirect [details]
Downloads 18624 total (85 in the last 30 days)
Rating 2.25 (votes: 2) [estimated by Bayesian average]
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Status Docs available [build log]
All reported builds failed as of 2023-03-23 [all 1 reports]

Readme for tzdata-0.2.20230322.0

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Haskell package that distributes the standard time zone database