Some Mexican timezones moved to Central Time from Mountain Time after update to timezone-2022f
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Environment
SUSE Linux Enterprise 15 SP4
SUSE Linux Enterprise 15 SP5
Situation
Cause
The Mexican state of Chihuahua officially changed their time zone from Mountain Time to Central Time in October 2022, with a few exceptions. From the changelog of the IANA tz data 2022f release:
Mexico will no longer observe DST after 2022, except for areas near the US border that continue to observe US DST rules. On 2022-10-30 at 02:00 the Mexican state of Chihuahua moves from -07 (-06 with DST) to year-round -06, thus not changing its clocks that day. The new law states that Chihuahua near the US border no longer observes US DST.
This means:
- Mexico does not observe Daylight Savings Time (DST) any more, except for some areas near the US border (such as Ojinaga, State of Chihuahua) that continue to observe DST.
- The timezone of the state of Chihuahua has changed from -07 (Mountain Standard Time, MST) to -06 (Central Standard Time, CST) except for some areas near the US border.
- The City of Chihuahua, State of Chihuahua, despite being close to the US, does not observe DST.
For example, this results in the border town of Ojinaga observing daylight savings in the Central Time timezone, the city of Chihuahua being on Standard Time all year long, but the town of Ciudad Juárez being on Mountain Time observing DST, despite all three cities being located in the State of Chihuahua:
# TZ=America/Ojinaga date Fr 5. Mai 04:16:56 CDT 2023 # TZ=America/Chihuahua date Fr 5. Mai 03:17:09 CST 2023 # TZ=America/Ciudad_Juarez date Fr 5. Mai 06:16:36 MDT 2023
Status
Disclaimer
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- Document ID:000021063
- Creation Date: 05-May-2023
- Modified Date:05-May-2023
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- SUSE Linux Enterprise Server
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