Red Hat Enterprise Linux Timezone Data (tzdata) - Development Status Page
The tzdata package contains data files with rules for various time zones around the world. This document captures Red Hat engineering's tentative plans, progress and status as upstream tzdata releases are packaged and released to Red Hat's customers and partners in Red Hat Enterprise Linux asynchronous errata.
All dates are approximate and subject to change.
From tzdata-2014h onwards (September 2014), Red Hat plans to routinely release all tzdata updates, subject to testing and qualification and aims to do so promptly after each upstream release. In general, integration and testing of a tzdata update is expected to take a minimum of 5 business days prior to releasing the update to our customers and partners. Red Hat aims to minimize this time. Where identified, Red Hat will handle tzdata regressions and other major bugs on a case-by-case basis.
Disclaimer: Links contained herein to external website(s) are provided for convenience only. Red Hat has not reviewed the links and is not responsible for the content or its availability. The inclusion of any link to an external website does not imply endorsement by Red Hat of the website or their entities, products or services. You agree that Red Hat is not responsible or liable for any loss or expenses that may result due to your use of (or reliance on) the external site or content.
tzdata-2024a:
- announced upstream on 20240201 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2024:0762 on 20240208 for supported releases of Red Hat Enterprise Linux 6, 7, 8 and 9
tzdata-2023d:
- announced upstream on 20231222 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2024:0076 on 20240108 for supported releases of Red Hat Enterprise Linux 6, 7, 8 and 9
tzdata-2023c:
- announced upstream on 20230328 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2023:1534 on 20230330 for supported releases of Red Hat Enterprise Linux 6, 7, 8 and 9
tzdata-2023b:
- This update supersedes tzdata-2023a.
- announced upstream on 20230324 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2023:1491 on 20230328 for supported releases of Red Hat Enterprise Linux 6, 7, 8 and 9
tzdata-2022g:
- announced upstream on 20221129 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2022:8785 on 20221205 for supported releases of Red Hat Enterprise Linux 6, 7, 8 and 9
tzdata-2022f:
- announced upstream on 20221028 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2022:7404 on 20221103 for supported releases of Red Hat Enterprise Linux 6, 7, 8 and 9
tzdata-2022e:
- announced upstream on 20221011 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2022:7067 on 20221020 for supported releases of Red Hat Enterprise Linux 6, 7, 8 and 9
tzdata-2022d:
- announced upstream on 20220924 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2022:6827 on 20221006 for supported releases of Red Hat Enterprise Linux 6, 7, 8 and 9
tzdata-2022c:
- This update supersedes tzdata-2022b.
- announced upstream on 20220816 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2022:1032 on 20220823 for supported releases of Red Hat Enterprise Linux 6, 7, 8 and 9
tzdata-2022a:
- announced upstream on 20220317 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2022:1032 on 20220323 for supported releases of Red Hat Enterprise Linux 6, 7 and 8
tzdata-2021e:
- This update supersedes tzdata-2021d.
- announced upstream on 20211022 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2021:4003 on 20211026 for supported releases of Red Hat Enterprise Linux 6, 7 and 8
tzdata-2021c:
- This update supersedes tzdata-2021b.
- announced upstream on 20211001 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2021:3790 on 20211012 for supported releases of Red Hat Enterprise Linux 6, 7 and 8
tzdata-2021b:
- announced upstream on 20210925 see announcement here
- This update was superseded by tzdata-2021c.
tzdata-2021a:
- announced upstream on 20210124 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2021:0276 on 20210126 for supported releases of Red Hat Enterprise Linux 6, 7 and 8
tzdata-2020f:
- this update supersedes tzdata-2020e
- announced upstream on 20201229 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2021:0013 on 20210105 for supported releases of Red Hat Enterprise Linux 6, 7 and 8
tzdata-2020e:
- Announced upstream on 20201223 see announcement here
- This update was superseded by tzdata-2020f.
tzdata-2020d:
- announced upstream on 20201021 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2020:4329 on 20201026 for supported releases of Red Hat Enterprise Linux 5, 6, 7 and 8
tzdata-2020c:
- Announced upstream on 20201016 see announcement here
- This update was superseded by tzdata-2020d.
tzdata-2020b:
- Announced upstream on 20201007 see announcement here
- This update removed some files that had previously been considered obsolete. Removal of pacificnew was reported to break the java TZupdater tool. On 20201012, the upstream project released a patch to fix this temporarily to prevent TZupdater from breaking. In a future update, this patch will be removed and the obsolete pacificnew file will be removed.
- Additionally, the POSIXRULES macro no longer creates the posixrules file by default. In order to provide continued support for this file, we have provided a patch to initialize the macro so that it will continue to create the posixrules file. This patch may be removed in a future update. The posixrules file should be considered obsolete.
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2020:4282-05 on 20201019 for supported releases of Red Hat Enterprise Linux 5, 6, 7 and 8
tzdata-2020a:
- announced upstream on 20200424 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2020:1982 on 20200430 for supported releases of Red Hat Enterprise Linux 5, 6, 7 and 8
tzdata-2019c:
- announced upstream on 20190911 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2019:2871 on 20190923 for supported releases of Red Hat Enterprise Linux 5, 6, 7 and 8
tzdata-2019b:
- announced upstream on 20190701 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2019:1703 on 20190710 for supported releases of Red Hat Enterprise Linux 5, 6, 7 and 8
tzdata-2019a:
- announced upstream on 20190326 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2019:0689 on 20190328 for supported releases of Red Hat Enterprise Linux 5, 6 and 7
tzdata-2018i:
- announced upstream on 20181231 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2019:0037 on 20190108 for supported releases of Red Hat Enterprise Linux 5, 6 and 7
tzdata-2018h:
- announced upstream on 20181229 see announcement here
- This update was superseded by tzdata-2018i.
tzdata-2018g:
- announced upstream on 20181027 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2018:3013 on 20181101 for supported releases of Red Hat Enterprise Linux 5, 6 and 7
tzdata-2018f:
- announced upstream on 20181018 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2018:3013 on 20181026 for supported releases of Red Hat Enterprise Linux 5, 6 and 7
tzdata-2018e:
This release of tzdata 2018e is providing the "rearguard" data set for maximum compatibility with existing Red Hat Enterprise Linux installs. Future releases of Red Hat Enterprise Linux will be transitioning to the default or "vanguard" tzdata data set.
The "rearguard" and "vanguard" data sets are defined by the upstream tzdata project and represent approximately the same data, with "vanguard" optimized for newer time zone data tooling, and "rearguard" optimized for compatibility with existing tooling. For example "vanguard" implements support for negative DST offsets, while "rearguard" supports the traditional format.
- announced upstream on 20180503 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2018:1339 on 20180508 for supported releases of Red Hat Enterprise Linux 5, 6 and 7
tzdata-2018d:
- announced upstream on 20180323 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2018:0597 on 20180327 for supported releases of Red Hat Enterprise Linux 5, 6 and 7
tzdata-2018c:
- announced upstream on 20180123 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2018:0232 on 20180129 for supported releases of Red Hat Enterprise Linux 5, 6 and 7
tzdata-2018b:
This update was made available for testing but never officially announced. The update made changes to timezone offsets which applications were not prepared to process. A change has been proposed for tzdata-2018c that increases backward compatibility. As soon as an update is available we will begin working on it immediately. We do not plan to ship tzata-2018b.
tzdata-2018a:
This update was made available for testing but never officially announced due to a missing data file. This has been fixed in tzdata-2018b. We do not plan to ship tzdata-2018a due to the missing file.
tzdata-2017c:
- announced upstream on 20171023 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2017:3052 on 20171025 for supported releases of Red Hat Enterprise Linux 5, 6 and 7
tzdata-2017b:
- announced upstream on 20170320 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2017:0472 on 20170323 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2017a:
- announced upstream on 20170228 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2017:0472 on 20170309 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2016j:
- announced upstream on 20161123 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2016:2832 on 20161130 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2016i:
- announced upstream on 20161102 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2016:2660 on 20161107 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2016h:
- announced upstream on 20161020 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2016:2096 on 20161021 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2016g:
- announced upstream on 20160928 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2016:1982 on 20160930 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2016f:
- announced upstream on 20160705 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2016:1388 on 20160706 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2016e:
- announced upstream on 20160614 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2016:1266 on 20160621 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2016d:
- announced upstream on 20160418 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2016:0517 on 20160422 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2016c:
- announced upstream on 20160323 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2016:0517 on 20160325 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2016b:
- announced upstream on 20160314 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2016:0154 on 20160318 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2016a:
- announced upstream on 20160128 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2016:0154 on 20160209 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2015g:
- announced upstream on 20151001 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2015:1863 on 20151007 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2015f:
- announced upstream on 20150811 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2015:1625 on 20150814 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2015e:
- announced upstream on 20150613 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHBA-2015:1126 on 20150619 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2015d:
- announced upstream on 20150424 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2015:0913 on 20150428 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2015c:
- announced upstream on 20150413 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2015:0855 on 20150417 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2015b:
- announced upstream on 20150321 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2015:0717 on 20150323 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2015a:
- announced upstream on 20150130 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2015:0141 on 20150206 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2014j:
- announced upstream on 20141111 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2014:1866 on 20141117 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2014i:
- announced upstream on 20141022 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2014:1733 on 20141029 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2014h:
- announced upstream on 20140925 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2014:1355 on 20141003 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2014g:
- announced upstream on 20140830 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2014:1253 on 20140916 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2014f:
- announced upstream on 20140806 see announcement here
- released by Red Hat in Red Hat Enterprise Linux advisory RHEA-2014:1242 on 20140916 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2014e:
- released in Red Hat Enterprise Linux advisory RHEA-2014:0774 on 20140620 for supported releases of Red Hat Enterprise Linux 4, 5, 6 and 7
tzdata-2014d:
- released in Red Hat Enterprise Linux advisory RHEA-2014:0592 on 20140602 for supported releases of Red Hat Enterprise Linux 4, 5 and 6
- released in Red Hat Enterprise Linux advisory RHEA-2014:0737 on 20140610 for supported releases of Red Hat Enterprise Linux 7
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