[Bug 1901020] Re: new upstream release 2020d

[Brian Murray]

Focal verification:

bdmurray at clean-focal-amd64:~$ apt-cache policy tzdata
tzdata:
  Installed: 2020a-0ubuntu0.20.04
  Candidate: 2020a-0ubuntu0.20.04
  Version table:
 *** 2020a-0ubuntu0.20.04 500
        500 http://192.168.10.7/ubuntu focal-updates/main amd64 Packages
        500 http://192.168.10.7/ubuntu focal-updates/main i386 Packages
        500 http://192.168.10.7/ubuntu focal-security/main amd64 Packages
        500 http://192.168.10.7/ubuntu focal-security/main i386 Packages
        100 /var/lib/dpkg/status
     2019c-3ubuntu1 500
        500 http://192.168.10.7/ubuntu focal/main amd64 Packages
        500 http://192.168.10.7/ubuntu focal/main i386 Packages
bdmurray at clean-focal-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-focal-amd64:~$ python3 -c "from datetime import datetime; from icu import ICUtzinfo, TimeZone; tz = ICUtzinfo(TimeZone.createTimeZone('Pacific/Fiji')); print(str(tz.utcoffset(datetime(2020, 11, 10))))"
13:00:00

bdmurray at clean-focal-amd64:~$ apt-cache policy tzdata
tzdata:
  Installed: 2020d-0ubuntu0.20.04
  Candidate: 2020d-0ubuntu0.20.04
  Version table:
 *** 2020d-0ubuntu0.20.04 500
        500 http://192.168.10.7/ubuntu focal-proposed/main amd64 Packages
        500 http://192.168.10.7/ubuntu focal-proposed/main i386 Packages
        100 /var/lib/dpkg/status
     2020a-0ubuntu0.20.04 500
        500 http://192.168.10.7/ubuntu focal-updates/main amd64 Packages
        500 http://192.168.10.7/ubuntu focal-updates/main i386 Packages
        500 http://192.168.10.7/ubuntu focal-security/main amd64 Packages
        500 http://192.168.10.7/ubuntu focal-security/main i386 Packages
     2019c-3ubuntu1 500
        500 http://192.168.10.7/ubuntu focal/main amd64 Packages
        500 http://192.168.10.7/ubuntu focal/main i386 Packages
bdmurray at clean-focal-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
bdmurray at clean-focal-amd64:~$ python3 -c "from datetime import datetime; from icu import ICUtzinfo, TimeZone; tz = ICUtzinfo(TimeZone.createTimeZone('Pacific/Fiji')); print(str(tz.utcoffset(datetime(2020, 11, 10))))"
12:00:00

Confirming that SystemV is still good:

diff <(zdump -v America/Phoenix | cut -d\  -f2-) <(zdump -v SystemV/MST7
| cut -d\  -f2-)

** Tags removed: verification-needed-focal
** Tags added: verification-done-focal

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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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