JDK-8259048 : (tz) Upgrade Timezone Data to tzdata2020f
  • Type: Enhancement
  • Component: core-libs
  • Sub-Component: java.time
  • Affected Version: 7,17
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2021-01-04
  • Updated: 2022-11-23
  • Resolved: 2021-01-15
The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

To download the current JDK release, click here.
JDK 11 JDK 13 JDK 15 JDK 16 JDK 17 JDK 7 JDK 8 Other
11.0.11-oracleFixed 13.0.7Fixed 15.0.3Fixed 16.0.1Fixed 17 b06Fixed 7u291Fixed 8u281Fixed openjdk7uFixed
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JDK-8260677 :  
The 2020f release of the tz code and data is available, reflecting the 
following change to the build procedure:

     'make rearguard_tarballs' no longer generates a bad rearguard.zi,
     fixing a 2020e bug.  (Problem reported by Deborah Goldsmith.)

There are no changes to the data since 2020e.

The build-procedure change was circulated on the tz mailing list and is 
intended for downstream consumers that can process only rearguard 
format. Please see the PS at the end of this email for more info about 
rearguard format.

Here are links to the release files:


As usual, links to the latest release files are here:


Links are also available via plain HTTP, and via FTP from
ftp://ftp.iana.org/tz/releases with the same basenames as above.

Each release file has a GPG signature, which can be retrieved by 
appending ".asc" to the above URLs. Copies of these signatures are 
appended to this message.

This release corresponds to commit 
846c3ac7abc246094dd754ac6dc90423148a5107 dated 2020-12-29 00:17:46 -0800 
and tagged '2020f' in the development GitHub repository at 

Here are the SHA-512 checksums for the release files:

Fix request (15u): request to include to 15u, applies cleanly, all relevant tests passed.

Fix request (13u): should be backported here, too. The patch contains changes for 2020e as well. Applies without modifications, all relevant regtests do pass.

Fix Request (11u-dev) Should get backported for parity with 11.0.11-oracle. Applies cleanly.

Fix Request(jdk16u): Please approve backporting the tzdata2020f changes to jdk16u repo. The risk is low and passed regression.

Changeset: fe84ecd5 Author: Kiran Sidhartha Ravikumar <kravikumar@openjdk.org> Date: 2021-01-15 19:14:08 +0000 URL: https://git.openjdk.java.net/jdk/commit/fe84ecd5