[Bug 1878108] Re: new upstream release 2020a

[Brian Murray]

The tzdata update on Ubuntu 16.04 LTS is good too.

Get:1 https://ubuntu.osuosl.org/ubuntu xenial-proposed/main amd64 tzdata all 2020a-0ubuntu0.16.04 [168 kB]
Fetched 168 kB in 2s (73.8 kB/s) 
Preconfiguring packages ...
(Reading database ... 359323 files and directories currently installed.)
Preparing to unpack .../tzdata_2020a-0ubuntu0.16.04_all.deb ...
Unpacking tzdata (2020a-0ubuntu0.16.04) over (2019c-0ubuntu0.16.04) ...
Setting up tzdata (2020a-0ubuntu0.16.04) ...

Current default time zone: 'America/Los_Angeles'
Local time is now:      Wed May 13 11:22:04 PDT 2020.
Universal Time is now:  Wed May 13 18:22:04 UTC 2020.
Run 'dpkg-reconfigure tzdata' if you wish to change it.

bdmurray at clean-xenial-amd64:~$ zdump -v "Africa/Casablanca" > after-update.txt
bdmurray at clean-xenial-amd64:~$ diff -Nurp before-update.txt after-update.txt | head -n20
--- before-update.txt   2020-05-13 11:21:29.776000000 -0700
+++ after-update.txt    2020-05-13 11:22:23.490514776 -0700
@@ -116,8 +116,8 @@ Africa/Casablanca  Sun Jun  9 01:59:59 2
 Africa/Casablanca  Sun Jun  9 02:00:00 2019 UT = Sun Jun  9 03:00:00 2019 +01 isdst=0 gmtoff=3600
 Africa/Casablanca  Sun Apr 19 01:59:59 2020 UT = Sun Apr 19 02:59:59 2020 +01 isdst=0 gmtoff=3600
 Africa/Casablanca  Sun Apr 19 02:00:00 2020 UT = Sun Apr 19 02:00:00 2020 +00 isdst=1 gmtoff=0
-Africa/Casablanca  Sun May 24 01:59:59 2020 UT = Sun May 24 01:59:59 2020 +00 isdst=1 gmtoff=0
-Africa/Casablanca  Sun May 24 02:00:00 2020 UT = Sun May 24 03:00:00 2020 +01 isdst=0 gmtoff=3600
+Africa/Casablanca  Sun May 31 01:59:59 2020 UT = Sun May 31 01:59:59 2020 +00 isdst=1 gmtoff=0
+Africa/Casablanca  Sun May 31 02:00:00 2020 UT = Sun May 31 03:00:00 2020 +01 isdst=0 gmtoff=3600
 Africa/Casablanca  Sun Apr 11 01:59:59 2021 UT = Sun Apr 11 02:59:59 2021 +01 isdst=0 gmtoff=3600
 Africa/Casablanca  Sun Apr 11 02:00:00 2021 UT = Sun Apr 11 02:00:00 2021 +00 isdst=1 gmtoff=0
 Africa/Casablanca  Sun May 16 01:59:59 2021 UT = Sun May 16 01:59:59 2021 +00 isdst=1 gmtoff=0

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https://bugs.launchpad.net/bugs/1878108

Title:
  new upstream release 2020a

Status in tzdata package in Ubuntu:
  Fix Released
Status in tzdata source package in Trusty:
  New
Status in tzdata source package in Xenial:
  Fix Committed
Status in tzdata source package in Bionic:
  Fix Committed
Status in tzdata source package in Eoan:
  Fix Committed
Status in tzdata source package in Focal:
  Fix Committed

Bug description:
  There is a new upstream release of tzdata, 2020, which includes the
  following:

    * New upstream release, affecting past and future timestamps:
      - Morocco springs forward on 2020-05-31, not 2020-05-24.
      - Canada's Yukon advanced to -07 year-round on 2020-03-08.
      - America/Nuuk renamed from America/Godthab.

  Verification is done with 'zdump'. The first timezone that gets
  changed in the updated package is dumped with "zdump -v
  $region/$timezone_that_changed" (this needed to be greped for in
  /usr/share/zoneinfo/). [For example: "zdump -v Africa/Casablanca".]
  This is compared to the same output after the updated package got
  installed. If those are different the verification is considered done.

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