JDK-8254982 : (tz) Upgrade Timezone Data to tzdata2020c
  • Type: Enhancement
  • Component: core-libs
  • Sub-Component: java.time
  • Affected Version: 7
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2020-10-19
  • Updated: 2022-11-23
  • Resolved: 2020-10-23
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.
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JDK 11 JDK 13 JDK 15 JDK 16 JDK 7 JDK 8 Other
11.0.10-oracleFixed 13.0.6Fixed 15.0.2Fixed 16 b22Fixed 7u291Fixed 8u271Fixed openjdk7uFixed
Sub Tasks
JDK-8259725 :  
The 2020c release of the tz code and data is available. It reflects the 
following changes, which were either circulated on the tz mailing list or are 
relatively minor technical or administrative changes:

     Fiji starts DST later than usual, on 2020-12-20.

   Changes to future timestamps

     Fiji will start DST on 2020-12-20, instead of 2020-11-08 as
     previously predicted.  DST will still end on 2021-01-17.
     (Thanks to Raymond Kumar and Alan Mintz.)  Assume for now that
     the later-than-usual start date is a one-time departure from the
     recent pattern.

   Changes to build procedure

     Rearguard tarballs now contain an empty file pacificnew.
     Some older downstream software expects this file to exist.
     (Problem reported by Mike Cullinan.)

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 ab21ad9710b88f28995b7ed47c6efda47ffb1be5 
dated 2020-10-16 11:15:53 -0700 and tagged '2020c' in the development GitHub 
repository at <https://github.com/eggert/tz>.

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

Fix request (13u) It is time to backport tzdata2020c here, too. The patch applies without any adjustment. All relevant tests pass.

Fix Request (8u). Backport for parity with Oracle 8u281. Review approval: https://mail.openjdk.java.net/pipermail/jdk8u-dev/2020-December/013161.html.

Fix request (11u) I would like to downport this for parity with 11.0.10-oracle. Applies clean.

Fix Request (15u): Please approve backporting tzdata2020c to JDK 15 Updates. The patch applies clean. Regression Tested. Risk is low.

Changeset: 55a0cad8 Author: Kiran Sidhartha Ravikumar <kravikumar@openjdk.org> Committer: Sean Coffey <coffeys@openjdk.org> Date: 2020-10-23 10:13:08 +0000 URL: https://git.openjdk.java.net/jdk/commit/55a0cad8