tzdata-2022g

[Bruce Dubbs]

New TZ data.

[Bruce Dubbs]

Release 2022g - 2022-11-29 08:58:31 -0800

Briefly:

  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.)

Changes to past timestamps

Changes for pre-1996 northern Canada (thanks to Chris Walton):

Merge America/Iqaluit and America/Pangnirtung into the former, with a backward compatibility link for the latter name. There is no good evidence the two locations differ since 1970. This change affects pre-1996 America/Pangnirtung timestamps.

Cambridge Bay, Inuvik, Iqaluit, Rankin Inlet, Resolute and Yellowknife did not observe DST in 1965, and did observe DST from 1972 through 1979.

Whitehorse moved from -09 to -08 on 1966-02-27, not 1967-05-28.

Colombia's 1993 fallback was 02-06 24:00, not 04-04 00:00. (Thanks to Alois Treindl.)

Singapore's 1981-12-31 change was at 16:00 UTC (23:30 local time), not 24:00 local time. (Thanks to Geoff Clare via Robert Elz.)

[Bruce Dubbs]

Fixed at commit 38311c3ea.