[tz] Mexico on track to abolish DST

[gera]

Hello again.

The most official thing I can get by now, is the following tweet from 
Rocio Nahle, who is the current Secretary for Energy, which shows the 
change for America/Chihuahua:

https://twitter.com/rocionahle/status/1585682205417799688

In the picture, Chihuahua (the one on the top left) is now shown in the 
same timezone than Mexico/General. It also shows that, for some 
municipalities in the border with USA (such as America/Ojinaga), they'll 
keep the DST.

I'd love to bring some more official info than a tweet, such as a the 
publication on the Official Journal of the Federation, but the thing is 
it hasn't been published yet; still most of the media, and as seen, even 
the Secretary for Energy (who actually manages the time issues in 
Mexico), are speaking about this as a given. Most of the users in this 
area (America/Chihuahua) are indeed expecting for this to happen.

Greetings.


On 10/28/22 09:43, Tim Parenti wrote:
>
> On Fri, 28 Oct 2022 at 11:08, gera via tz <tz at iana.org> wrote:
>
>     Thing is, there are certain regions which will get a change on its DST as soon as October 30th, 2022.
>
>     This is the case for Chihuahua (America/Chihuahua) which seems wont change its time this sunday, as it'll be aligned to Mexico/General, again, this same October 30th, 2022, according to this same law.
>
> That is good to know.  So far, our understanding had been that ALL 
> regions would fall back on 30 October (or 6 November, for those that 
> follow US rules) as originally scheduled, and therefore that we would 
> have until 2 April 2023 before the change affected any timestamps.  
> But if any regions are indeed changing zones by NOT falling back this 
> weekend, that is a different story and we should work to get that into 
> a release as soon as possible.
>
> Do you have a clear reference for which regions will be doing this?  
> Perhaps a comparison of the regions listed in the recently approved 
> law and the previous law it replaces?
>
>     This sets what I think are really hard implications for most of the services running on this timezone.
>
>     If the said law is published between now and next Saturday, I guess it'll be havoc among users on this timezone.
>
>     I still don't think there's an easy fix from tz to this, but I think it's important for somebody to notice this.
>
> Yes, and it underscores the importance of allowing sufficient time to 
> allow changes to be clearly communicated, encoded, tested, published, 
> and propagated to end-users.  This issue is well familiar to frequent 
> readers of this list, but remains somewhat less familiar to the 
> governments of the world.
>
> Even if we're able to get a release out in the next ~40 hours before 
> this happens, by this point, it's unlikely to get to most end-users in 
> time.
>
> --
> Tim Parenti
>
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