Mexico 2023 time zone updates now available

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This post has been republished via RSS; it originally appeared at: New blog articles in Microsoft Community Hub.

As a result of the October 26th, 2022, order from the Mexican Government, Daylight Saving Time (DST) in the United Mexican States will not be observed in 2023 calendar year. In a subsequent order by the Mexican Government, it was declared that Chihuahua, Coahuila, Nuevo León, Tamaulipas and the state of Baja California near the Mexico-U.S. border will continue to honor the DST schedule defined by the United States in 2007 which starts on the second Sunday of March (March 12, 2023) at 2:00 AM  and ends on the first Sunday of November (November 5, 2023) at 2:00 AM. 


Microsoft will release Windows Updates in support of these DST changes for Mexico as follows: 

  1. A new time zone, America/Ciudad_Juarez, will be created, splitting from the existing time zone America/Ojinaga.
  2. Clocks in the border municipalities of Janos, Ascensión, Juárez, Praxedis G. Guerrero, and Guadalupe will follow the America/Ciudad_Juarez time zone and will move forward by an hour at 2:00 a.m. on March 12, 2023 to UTC-6 (MDT).
  3. Clocks in the border municipalities of Ojinaga, Manuel Benavides, and Coyame will follow the the America/Ojinaga time zone and will move forward by an hour at 2:00 a.m. on March 12, 2023 to UTC-5 (CDT).
  4. Clocks for all states except Baja California, Coahuila de Zaragoza, Nuevo León, Tamaulipas, and Chihuahua will not move forward by an hour at 2:00 a.m. on April 02, 2023.

These changes will appear in the February 2023 Cumulative Update preview for for the following Windows versions: 

  • Windows 10, version 20H2 
  • Windows 10, version 21H2 
  • Windows 10, version 22H2 
  • Windows 11, version 21H2 
  • Windows 11, version 22H2 

All other supported Windows versions will receive the update as part of March 2023 monthly quality update.


For Microsoft's official policy on DST and time zone changes, please see Daylight saving time help and support. For information on how to update Windows to use the latest global time zone rules, see How to configure daylight saving time for Microsoft Windows operating systems.

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