From 1ba5f501c277f75b2e56da0bc08c85c15fc90506 Mon Sep 17 00:00:00 2001 From: Petr Bokoc Date: Oct 25 2018 15:16:41 +0000 Subject: 178 - tzdata transition to vanguard format --- diff --git a/modules/release-notes/pages/sysadmin/System_Utilities.adoc b/modules/release-notes/pages/sysadmin/System_Utilities.adoc index c51a254..514159d 100644 --- a/modules/release-notes/pages/sysadmin/System_Utilities.adoc +++ b/modules/release-notes/pages/sysadmin/System_Utilities.adoc @@ -11,3 +11,14 @@ Since release 2.0, the [application]*Wireshark* network protocol analyzer came w Users will not be particularly affected by the removal of the legacy GUI as both interfaces look and behave the same even though the frameworks are different. See the link:++https://www.wireshark.org/docs/relnotes/++[upstream release notes] for additional information. + +== tzdata transition to the vanguard format + +Starting with Fedora 29, the `tzdata` package, which contains rules for world time zones, is using the `vanguard` data format by default. +This format was introduced in `tzdata` version `2018d` and became default in version `2018e` which is the default version in Fedora 29. +This format includes POSIX-compliant implementations of negative DST offsets, which have previously been a problem for both Java and ICU parsers. + +If you have any programs which parse `tzdata` files, make sure they are updated to be able to parse the new format. +If you dump time zone data with `zdump`, you will now see negative DST offsets where applicable. + +Additionally, `tzdata-2018e` changes the North Korea time zone from UTC+8:30 to UTC+9 as of May 5, 2018.