[Bug 1998321] [NEW] tzdata 2022g release

[Benjamin Drung]

Public bug reported:

The 2022g release contains the following changes:

* The northern edge of Chihuahua changes to US timekeeping.
* Much of Greenland stops changing clocks after March 2023.
* Fix some pre-1996 timestamps in northern Canada.
* C89 is now deprecated; please use C99 or later.
* Portability fixes for AIX, libintl, MS-Windows, musl, z/OS
* In C code, use more C23 features if available.
* C23 timegm now supported by default
* Fixes for unlikely integer overflows

Changes to future timestamps:

In the Mexican state of Chihuahua, the border strip near the US will
change to agree with nearby US locations on 2022-11-30. The strip's
western part, represented by Ciudad Juárez, switches from -06 all year
to -07/-06 with US DST rules, like El Paso, TX. The eastern part,
represented by Ojinaga, will observe US DST next year, like Presidio,
TX.  (Thanks to Heitor David Pinto.) A new Zone America/Ciudad_Juarez
splits from America/Ojinaga.

Much of Greenland, represented by America/Nuuk, stops observing winter
time after March 2023, so its daylight saving time becomes standard
time.  (Thanks to Jonas Nyrup and Jürgen Appel.)

** Affects: tzdata (Ubuntu)
     Importance: Critical
     Assignee: Benjamin Drung (bdrung)
         Status: New

** Description changed:

  The 2022g release contains the following changes:
  
  * The northern edge of Chihuahua changes to US timekeeping.
  * Much of Greenland stops changing clocks after March 2023.
  * Fix some pre-1996 timestamps in northern Canada.
  * C89 is now deprecated; please use C99 or later.
  * Portability fixes for AIX, libintl, MS-Windows, musl, z/OS
  * In C code, use more C23 features if available.
  * C23 timegm now supported by default
  * Fixes for unlikely integer overflows
+ 
+ Changes to future timestamps:
+ 
+ In the Mexican state of Chihuahua, the border strip near the US will
+ change to agree with nearby US locations on 2022-11-30. The strip's
+ western part, represented by Ciudad Juárez, switches from -06 all year
+ to -07/-06 with US DST rules, like El Paso, TX. The eastern part,
+ represented by Ojinaga, will observe US DST next year, like Presidio,
+ TX.  (Thanks to Heitor David Pinto.) A new Zone America/Ciudad_Juarez
+ splits from America/Ojinaga.
+ 
+ Much of Greenland, represented by America/Nuuk, stops observing winter
+ time after March 2023, so its daylight saving time becomes standard
+ time.  (Thanks to Jonas Nyrup and Jürgen Appel.)

** Changed in: tzdata (Ubuntu)
   Importance: Undecided => Critical

** Changed in: tzdata (Ubuntu)
     Assignee: (unassigned) => Benjamin Drung (bdrung)

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https://bugs.launchpad.net/bugs/1998321

Title:
  tzdata 2022g release

Status in tzdata package in Ubuntu:
  New

Bug description:
  The 2022g release contains the following changes:

  * The northern edge of Chihuahua changes to US timekeeping.
  * Much of Greenland stops changing clocks after March 2023.
  * Fix some pre-1996 timestamps in northern Canada.
  * C89 is now deprecated; please use C99 or later.
  * Portability fixes for AIX, libintl, MS-Windows, musl, z/OS
  * In C code, use more C23 features if available.
  * C23 timegm now supported by default
  * Fixes for unlikely integer overflows

  Changes to future timestamps:

  In the Mexican state of Chihuahua, the border strip near the US will
  change to agree with nearby US locations on 2022-11-30. The strip's
  western part, represented by Ciudad Juárez, switches from -06 all year
  to -07/-06 with US DST rules, like El Paso, TX. The eastern part,
  represented by Ojinaga, will observe US DST next year, like Presidio,
  TX.  (Thanks to Heitor David Pinto.) A new Zone America/Ciudad_Juarez
  splits from America/Ojinaga.

  Much of Greenland, represented by America/Nuuk, stops observing winter
  time after March 2023, so its daylight saving time becomes standard
  time.  (Thanks to Jonas Nyrup and Jürgen Appel.)

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