[Bug 1901020] Re: new upstream release 2020d

[Brian Murray]

Groovy verification of tzdata using Fiji:

bdmurray at clean-groovy-amd64:~$ zdump -v Pacific/Fiji | grep 2020
Pacific/Fiji  Sat Jan 11 13:59:59 2020 UT = Sun Jan 12 02:59:59 2020 +13 isdst=1 gmtoff=46800
Pacific/Fiji  Sat Jan 11 14:00:00 2020 UT = Sun Jan 12 02:00:00 2020 +12 isdst=0 gmtoff=43200
Pacific/Fiji  Sat Nov  7 13:59:59 2020 UT = Sun Nov  8 01:59:59 2020 +12 isdst=0 gmtoff=43200
Pacific/Fiji  Sat Nov  7 14:00:00 2020 UT = Sun Nov  8 03:00:00 2020 +13 isdst=1 gmtoff=46800
bdmurray at clean-groovy-amd64:~$ sudo apt-get install tzdata
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be upgraded:
  tzdata
1 upgraded, 0 newly installed, 0 to remove and 348 not upgraded.
Need to get 0 B/293 kB of archives.
After this operation, 0 B of additional disk space will be used.
Preconfiguring packages ...
(Reading database ... 190075 files and directories currently installed.)
Preparing to unpack .../tzdata_2020d-1ubuntu1_all.deb ...
Unpacking tzdata (2020d-1ubuntu1) over (2020b-1ubuntu1) ...
Setting up tzdata (2020d-1ubuntu1) ...

Current default time zone: 'America/Los_Angeles'
Local time is now:      Wed Oct 28 15:27:00 PDT 2020.
Universal Time is now:  Wed Oct 28 22:27:00 UTC 2020.
Run 'dpkg-reconfigure tzdata' if you wish to change it.

bdmurray at clean-groovy-amd64:~$ zdump -v Pacific/Fiji | grep 2020
Pacific/Fiji  Sat Jan 11 13:59:59 2020 UT = Sun Jan 12 02:59:59 2020 +13 isdst=1 gmtoff=46800
Pacific/Fiji  Sat Jan 11 14:00:00 2020 UT = Sun Jan 12 02:00:00 2020 +12 isdst=0 gmtoff=43200
Pacific/Fiji  Sat Dec 19 13:59:59 2020 UT = Sun Dec 20 01:59:59 2020 +12 isdst=0 gmtoff=43200
Pacific/Fiji  Sat Dec 19 14:00:00 2020 UT = Sun Dec 20 03:00:00 2020 +13 isdst=1 gmtoff=46800

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https://bugs.launchpad.net/bugs/1901020

Title:
  new upstream release 2020d

Status in tzdata package in Ubuntu:
  Fix Released
Status in tzdata source package in Precise:
  In Progress
Status in tzdata source package in Trusty:
  In Progress
Status in tzdata source package in Xenial:
  Fix Committed
Status in tzdata source package in Bionic:
  Fix Committed
Status in tzdata source package in Focal:
  Fix Committed
Status in tzdata source package in Groovy:
  Fix Committed

Bug description:
  New upstream version, affecting the following future timestamps:
    - Fiji starts DST later than usual, on 2020-12-20.
    - Palestine ends DST earlier than predicted, on 2020-10-24.
    - Revised predictions for Morocco's changes starting in 2023.
    - Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-08.
    - Macquarie Island has stayed in sync with Tasmania since 2011.
    - Casey, Antarctica is at +08 in winter and +11 in summer since 2018.

  Additionally, upstream removed the "old" SystemV timezones, but the
  SRU will ensure that they are kept. Subsequently, these should be
  checked for using the following:

  zdump -v SystemV/MST7
  zdump -v America/Phoenix

  The information returned by SystemV/MST7 should be included in
  America/Phoenix's output.

  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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