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[Simon Chopin <1987642@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1986984 ***
    https://bugs.launchpad.net/bugs/1986984

** This bug has been marked a duplicate of bug 2022
   iso-codes is not available for breezy

** This bug is no longer a duplicate of bug 2022
   iso-codes is not available for breezy

** Description changed:

- Chile is delaying the start of Daylight Saving Time (DST) by one week
- this year [1],[2].
+ New timezone data, with the following timezones impacted:
+ - Chile will spring forward on 2022-09-11, not 2022-09-04 (America/Santiago)
+ - Iran no longer observes DST (Asia/Tehran)
+ 
+ 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 needs to be greped for in
+ /usr/share/zoneinfo/). [For example: 'zdump -v Asia/Gaza'.] This is
+ compared to the same output after the updated package got installed. If
+ those are different the verification is considered done.
+ 
+ [Test Case for all releases]
+ 1) zdump -v America/Santiago | grep 'Sep.*2022'
+   -> should indicate Sep 11, not Sep 4
+ 2) zdump -v Asia/Tehran | tail
+   -> last dates should be in 2022, not in 2499
+ 
+ [Test Case for releases >= 20.04 LTS]
+ 
+ For releases with ICU timezone data verification is done using the following with dates before and after the change:
+ 1) sudo apt-get install python3-icu
+ 2) Run the following python script:
+ 
+ from datetime import datetime
+ from icu import ICUtzinfo, TimeZone
+ tz = ICUtzinfo(TimeZone.createTimeZone("America/Santiago"))
+ always_before = datetime(2022, 9, 1)
+ now_before = datetime(2022, 9, 8)
+ always_after = datetime(2022, 9, 12)
+ assert(tz.utcoffset(always_before) == tz.utcoffset(now_before))
+ assert(tz.utcoffset(now_before) != tz.utcoffset(always_after))
+ 
+ The assertions would crash on 2022a.
+ 
+ [Test Case for releases <= 20.04 LTS]
+ 
+ Additionally, an upstream update of tzdata removed the 'old' SystemV timezones, so we should ensure that they are kept in Ubuntu 20.04 LTS and earlier releases. Subsequently, these should be checked for using the following:
+ diff <(zdump -v America/Phoenix | cut -d' ' -f2-) <(zdump -v SystemV/MST7 | cut -d' ' -f2-)
+ 
+ Nothing should be returned by the above command.
+ 
+ [Original report]
+ Chile is delaying the start of Daylight Saving Time (DST) by one week this year [1],[2].
  
  DST timezone in Chile will start on midnight of September 11th; and will
  end on April 1st, 2023.
  
  Debian's 2022c-1 and 2022b-1 versions of tzdata contain the fix for
  this.
  
  Upstream commit :
  https://github.com/eggert/tz/commit/711b46f8fc4e8a3d5caf7d4820562d6cdfe9d769
  
  We need to fix this in all or releases back to Xenial.
  
- 
  [1] https://www.interior.gob.cl/noticias/2022/08/09/comunicado-el-proximo-sabado-10-de-septiembre-los-relojes-se-deben-adelantar-una-hora/
  [2] https://www.timeanddate.com/news/time/chile-dst-delay-2022.html#:~:text=Chile%20is%20delaying%20the%20start,financial%20district%20in%20Chile%27s%20capital.

** This bug has been marked a duplicate of bug 1986984
   [FFe] tzdata 2022c update

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https://bugs.launchpad.net/bugs/1987642

Title:
  Chile is delaying the DST by one week for 2022

Status in tzdata package in Ubuntu:
  Fix Released
Status in tzdata source package in Xenial:
  Confirmed
Status in tzdata source package in Bionic:
  Confirmed
Status in tzdata source package in Focal:
  Confirmed
Status in tzdata source package in Jammy:
  Confirmed
Status in tzdata source package in Kinetic:
  Fix Released

Bug description:
  New timezone data, with the following timezones impacted:
  - Chile will spring forward on 2022-09-11, not 2022-09-04 (America/Santiago)
  - Iran no longer observes DST (Asia/Tehran)

  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 needs to be greped for in
  /usr/share/zoneinfo/). [For example: 'zdump -v Asia/Gaza'.] This is
  compared to the same output after the updated package got installed.
  If those are different the verification is considered done.

  [Test Case for all releases]
  1) zdump -v America/Santiago | grep 'Sep.*2022'
    -> should indicate Sep 11, not Sep 4
  2) zdump -v Asia/Tehran | tail
    -> last dates should be in 2022, not in 2499

  [Test Case for releases >= 20.04 LTS]

  For releases with ICU timezone data verification is done using the following with dates before and after the change:
  1) sudo apt-get install python3-icu
  2) Run the following python script:

  from datetime import datetime
  from icu import ICUtzinfo, TimeZone
  tz = ICUtzinfo(TimeZone.createTimeZone("America/Santiago"))
  always_before = datetime(2022, 9, 1)
  now_before = datetime(2022, 9, 8)
  always_after = datetime(2022, 9, 12)
  assert(tz.utcoffset(always_before) == tz.utcoffset(now_before))
  assert(tz.utcoffset(now_before) != tz.utcoffset(always_after))

  The assertions would crash on 2022a.

  [Test Case for releases <= 20.04 LTS]

  Additionally, an upstream update of tzdata removed the 'old' SystemV timezones, so we should ensure that they are kept in Ubuntu 20.04 LTS and earlier releases. Subsequently, these should be checked for using the following:
  diff <(zdump -v America/Phoenix | cut -d' ' -f2-) <(zdump -v SystemV/MST7 | cut -d' ' -f2-)

  Nothing should be returned by the above command.

  [Original report]
  Chile is delaying the start of Daylight Saving Time (DST) by one week this year [1],[2].

  DST timezone in Chile will start on midnight of September 11th; and
  will end on April 1st, 2023.

  Debian's 2022c-1 and 2022b-1 versions of tzdata contain the fix for
  this.

  Upstream commit :
  https://github.com/eggert/tz/commit/711b46f8fc4e8a3d5caf7d4820562d6cdfe9d769

  We need to fix this in all or releases back to Xenial.

  [1] https://www.interior.gob.cl/noticias/2022/08/09/comunicado-el-proximo-sabado-10-de-septiembre-los-relojes-se-deben-adelantar-una-hora/
  [2] https://www.timeanddate.com/news/time/chile-dst-delay-2022.html#:~:text=Chile%20is%20delaying%20the%20start,financial%20district%20in%20Chile%27s%20capital.

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