Mexico on track to abolish DST
Yesterday Mexico's Chamber of Deputies voted 445–33 to abolish DST in most of Mexico, and although there are more hurdles I expect this to become law. When that happens, I hope the following simple patch will suffice; it merely changes "max" to "2022" in the last two Mexico Rule lines. We'll also need to add commentary citing the law, etc., but you can try this patch now if you like, to debug any applications involving future time in Mexico. Today timeanddate updated their English-language summary of this <https://www.timeanddate.com/news/time/mexico-remove-dst-2022.html>. I haven't installed the following. diff --git a/northamerica b/northamerica index da84f354..2466d627 100644 --- a/northamerica +++ b/northamerica @@ -2634,2 +2634,2 @@ Rule Mexico 2001 only - Sep lastSun 2:00 0 S -Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D -Rule Mexico 2002 max - Oct lastSun 2:00 0 S +Rule Mexico 2002 2022 - Apr Sun>=1 2:00 1:00 D +Rule Mexico 2002 2022 - Oct lastSun 2:00 0 S
On 9/30/22 12:12, Paul Eggert wrote:
Yesterday Mexico's Chamber of Deputies voted 445–33 to abolish DST in most of Mexico, and although there are more hurdles I expect this to become law. When that happens, I hope the following simple patch will suffice
Mexico's Senate voted 59-25 today to approve the law. As I understand it, it will become official after the president signs it (which is expected, as it's his idea) and its official publication. Assuming that happens we can cite the publication and install the patch into TZDB. Although this wouldn't affect timestamps until 2023-03-19, we'd need a new TZDB release well before then to give time for the data to percolate downstream. I haven't heard anything about Paraguay recently. If Paraguay is also changing its rules effective March 2023 it'd be nice to get that in the next TZDB release as well. But I suppose we shouldn't wait too long for Paraguay to decide. Here's coverage of the Mexican Senate vote: https://comunicacionsocial.senado.gob.mx/informacion/comunicados/4104-pleno-...
Hello guys. 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. 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. On 9/30/22 12:12, Paul Eggert wrote:
/Yesterday Mexico's Chamber of Deputies voted 445–33 to abolish DST in />/most of Mexico, and although there are more hurdles I expect this to />/become law. When that happens, I hope the following simple patch will />/suffice / Mexico's Senate voted 59-25 today to approve the law. As I understand it, it will become official after the president signs it (which is expected, as it's his idea) and its official publication. Assuming that happens we can cite the publication and install the patch into TZDB. Although this wouldn't affect timestamps until 2023-03-19, we'd need a new TZDB release well before then to give time for the data to percolate downstream.
I haven't heard anything about Paraguay recently. If Paraguay is also changing its rules effective March 2023 it'd be nice to get that in the next TZDB release as well. But I suppose we shouldn't wait too long for Paraguay to decide. Here's coverage of the Mexican Senate vote: https://comunicacionsocial.senado.gob.mx/informacion/comunicados/4104-pleno-...
On Fri, 28 Oct 2022 at 11:08, gera via tz <tz@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
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@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
On 2022-10-28 10:40, gera via tz wrote:
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.
Right, so that says Ojinaga will now agree with the nearby Presidio, Texas (-06 with US DST rules), which makes sense. On the other hand it also says that the much larger Ciudad Juárez (which will become -06 with US DST rules) will now start to disagree with the nearby El Paso (-07 with US DST rules) - that is, starting Sunday the two neighboring cities will almost invariably disagree about the time of day. I'm not seeing any news items talking about this situation, which is a curious thing for a binational metro area with a population of 2.7 million (mostly in Mexico).
Well, actually I used Ojinaga as an example, but most of the northern municipalities (if not all) will keep aligned with USA DST rules, as read on the same note you quoted: https://heraldodemexico.com.mx/nacional/2022/10/26/adios-al-horario-de-veran... This includes Ciudad Juárez, certainly. I know, this is a pain, and more if they didn't make it really official the right way. On 10/28/22 14:26, Paul Eggert wrote:
On 2022-10-28 10:40, gera via tz wrote:
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.
Right, so that says Ojinaga will now agree with the nearby Presidio, Texas (-06 with US DST rules), which makes sense.
On the other hand it also says that the much larger Ciudad Juárez (which will become -06 with US DST rules) will now start to disagree with the nearby El Paso (-07 with US DST rules) - that is, starting Sunday the two neighboring cities will almost invariably disagree about the time of day. I'm not seeing any news items talking about this situation, which is a curious thing for a binational metro area with a population of 2.7 million (mostly in Mexico).
On 2022-10-28 13:58, gera via tz wrote:
Well, actually I used Ojinaga as an example, but most of the northern municipalities (if not all) will keep aligned with USA DST rules, as read on the same note you quoted:
https://heraldodemexico.com.mx/nacional/2022/10/26/adios-al-horario-de-veran...
This includes Ciudad Juárez, certainly.
Circling back on this - I reread that article this morning and it's not clear to me that the article says Ciudad Juárez will observe DST this weekend. Admittedly its wording is hard to follow (I'm relying on Google Translate, as I've never learned Spanish unfortunately). I looked for more news coverage of this, and found the following: Juárez P. ‘Desfase de horario con EP causaría graves pérdidas’. El Diario de Juárez. 2022-11-03. https://diario.mx/juarez/desfase-de-horario-con-ep-causaria-graves-perdidas-... It says that Ciudad Juárez will not change its clocks this weekend, which agrees with the current TZDB release. It also says that although there's unhappiness with the current situation, and there is a way in the new Mexican law for the local legislature to request a change to the clock rules for a region or municipality, nothing along those lines has happened yet for Ciudad Juárez. So my guess is that we are OK for this weekend, anyway.
Well, actually I used Ojinaga as an example, but most of the northern municipalities (if not all) will keep aligned with USA DST rules, as read on the same note you quoted: https://heraldodemexico.com.mx/nacional/2022/10/26/adios-al-horario-de-veran... This includes Ciudad Juárez, certainly. I know, this is a pain, and more if they didn't make it really official the right way. On 10/28/22 14:26, Paul Eggert wrote:
On 2022-10-28 10:40, gera via tz wrote:
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.
Right, so that says Ojinaga will now agree with the nearby Presidio, Texas (-06 with US DST rules), which makes sense.
On the other hand it also says that the much larger Ciudad Juárez (which will become -06 with US DST rules) will now start to disagree with the nearby El Paso (-07 with US DST rules) - that is, starting Sunday the two neighboring cities will almost invariably disagree about the time of day. I'm not seeing any news items talking about this situation, which is a curious thing for a binational metro area with a population of 2.7 million (mostly in Mexico).
On 2022-10-28 14:11, gera via tz wrote:
Well, actually I used Ojinaga as an example, but most of the northern municipalities (if not all) will keep aligned with USA DST rules, as read on the same note you quoted:
https://heraldodemexico.com.mx/nacional/2022/10/26/adios-al-horario-de-veran...
This includes Ciudad Juárez, certainly.
I wasn't focusing on Ciudad Juárez using DST; that's pretty clear and there's nothing new there. I was focusing on Ciudad Juárez not changing its clocks next weekend (November 6), thus staying on -06 instead of falling back to -07 like El Paso will. This is a major change, because until now Ciudad Juárez has stayed pretty much in lock-step with El Paso. Is it really the case that Juárez will not fall back on November 6, and will thus start disagreeing with El Paso? Is there news coverage of this somewhere? Another possibility, depending on how the new law is written, is that Ciudad Juárez is legally required to spring forward this weekend from -06 to -05 because DST will still be in effect when Chihuahua moves to -06 this weekend; and then Ciudad Juárez will be legally required to fall back next weekend from -05 to -06 because it will be following the US DST rules. But even if the new law is written that way, it's hard to believe that people in Mexico will actually follow the law as written.
On Fri, 28 Oct 2022 at 16:26, Paul Eggert <eggert@cs.ucla.edu> wrote:
On the other hand it also says that the much larger Ciudad Juárez (which will become -06 with US DST rules) will now start to disagree with the nearby El Paso (-07 with US DST rules) - that is, starting Sunday the two neighboring cities will almost invariably disagree about the time of day.
For what it's worth, the draft law circulated in July lists the state of Chihuahua in the "Zona Pacifico", corresponding to 105°W or UTC-07. See Chapter 1, Article 3(II): http://gaceta.diputados.gob.mx/PDF/65/2022/jul/20220706-III.pdf#page=23 So the image from the Energy Secretary on Twitter, putting the entirety of Chihuahua in "Zona Centro" (UTC-06), is at least a departure from that draft. https://twitter.com/rocionahle/status/1585682205417799688 (Chapter 2 of the draft from July puts all of Chihuahua's border area into UTC-06 during US DST; that is, the status quo.) There does at least seem to be some amount of general confusion on social media based on a cursory Twitter search. So without updated legal text in front of us, we're not really going to be able to verify this much better, as there's only so much we can likely glean from sparse news reports. One possible scenario: The bulk of Chihuahua would move into "Zona Centro" (UTC-06) by not changing its clocks this weekend, while the existing arrangement of -07/-06 with US DST could continue along Chihuahua's entire border region. This would have the net effect that Juárez would be behind the rest of Chihuahua in the winter, rather than ahead of it in the summer, and would maintain year-round compatibility between Ciudad Juárez, El Paso County, and Hudspeth County, while also maintaining the existing year-round one-hour difference from places like Ojinaga to Presidio and Brewster Counties. Alternatively, supposing -07/-06 is maintained in Juárez and environs, maybe the eastern portions of Chihuahua's border region might follow the rest of Chihuahua in advancing their logical zone into "Zona Centro". Assuming those border areas continue to observe US DST rules, that would put them on -06/-05, eliminating nearby cross-border time differences east of some point, but necessitating a line to be drawn somewhere to separate the two timekeeping regimes. Assuming an extension of the Texas' time zone boundary between Hudspeth and Presidio Counties, that would put such a dividing line near Lomas de Arena in Chihuahua. All of the above is just speculation on how individual municipalities and regions might end up aligning their timekeeping if they're operating on the same (limited) information we have. Perhaps local officials do know more about the details, but if so, we haven't yet seen them. This may be one of those (thankfully rare) cases where, knowing there is potential for much confusion and that we really can't get anything out ahead of the changes anyway, it may just be best to "wait and see" what folks actually begin observing before making descriptive updates to the data. Which is a shame, given how long this has been on our radar. -- Tim Parenti
Well, yes. On the first draw it was only a termination for DST use on Mexico. Later, some amendments where set to move Chihuahua to the "Zona Centro", as this was the original time zone until 1998. Unfortunately, we haven't had any official publication, so I still think it'll be chaos next Sunday as most of the electronic devices on Chihuahua will go back one hour, when it has been loudly spoken everywhere by media and politicians that the clock wont be adjusted anymore there. I don't see any easy and quick fix for this regarding TZDB. On 10/28/22 15:56, Tim Parenti via tz wrote:
On Fri, 28 Oct 2022 at 16:26, Paul Eggert <eggert@cs.ucla.edu> wrote:
On the other hand it also says that the much larger Ciudad Juárez (which will become -06 with US DST rules) will now start to disagree with the nearby El Paso (-07 with US DST rules) - that is, starting Sunday the two neighboring cities will almost invariably disagree about the time of day.
For what it's worth, the draft law circulated in July lists the state of Chihuahua in the "Zona Pacifico", corresponding to 105°W or UTC-07. See Chapter 1, Article 3(II): http://gaceta.diputados.gob.mx/PDF/65/2022/jul/20220706-III.pdf#page=23 So the image from the Energy Secretary on Twitter, putting the entirety of Chihuahua in "Zona Centro" (UTC-06), is at least a departure from that draft. https://twitter.com/rocionahle/status/1585682205417799688 (Chapter 2 of the draft from July puts all of Chihuahua's border area into UTC-06 during US DST; that is, the status quo.)
There does at least seem to be some amount of general confusion on social media based on a cursory Twitter search. So without updated legal text in front of us, we're not really going to be able to verify this much better, as there's only so much we can likely glean from sparse news reports.
One possible scenario: The bulk of Chihuahua would move into "Zona Centro" (UTC-06) by not changing its clocks this weekend, while the existing arrangement of -07/-06 with US DST could continue along Chihuahua's entire border region. This would have the net effect that Juárez would be behind the rest of Chihuahua in the winter, rather than ahead of it in the summer, and would maintain year-round compatibility between Ciudad Juárez, El Paso County, and Hudspeth County, while also maintaining the existing year-round one-hour difference from places like Ojinaga to Presidio and Brewster Counties.
Alternatively, supposing -07/-06 is maintained in Juárez and environs, maybe the eastern portions of Chihuahua's border region might follow the rest of Chihuahua in advancing their logical zone into "Zona Centro". Assuming those border areas continue to observe US DST rules, that would put them on -06/-05, eliminating nearby cross-border time differences east of some point, but necessitating a line to be drawn somewhere to separate the two timekeeping regimes. Assuming an extension of the Texas' time zone boundary between Hudspeth and Presidio Counties, that would put such a dividing line near Lomas de Arena in Chihuahua.
All of the above is just speculation on how individual municipalities and regions might end up aligning their timekeeping if they're operating on the same (limited) information we have. Perhaps local officials do know more about the details, but if so, we haven't yet seen them.
This may be one of those (thankfully rare) cases where, knowing there is potential for much confusion and that we really can't get anything out ahead of the changes anyway, it may just be best to "wait and see" what folks actually begin observing before making descriptive updates to the data. Which is a shame, given how long this has been on our radar.
-- Tim Parenti
The new Mexican law was published today, here: https://www.dof.gob.mx/nota_detalle.php?codigo=5670045&fecha=28/10/2022 I plan to see if I can understand what it says. Obviously not much notice.
I can help. Basically states 4 zones: - Noroeste: with Baja California state. - Pacifico: with states of Baja California Sur, Nayarit (excepting Bahía de Banderas municipality which will be kept on Zona Centro), Sinaloa and Sonora. - Sureste: Quintana Roo state. - Centro: Every other unlisted state (such as Chihuahua) - The remaining islands will stay on the meridian to which they belong. Now, for the following municipalities (which are located at the border with the USA), there are some exceptions which are indicated as northern seasonal: - Acuña, Allende, Guerrero, Hidalgo, Jiménez, Morelos, Nava, Ocampo, Piedras Negras, Villa Unión and Zaragoza, in Coahuila de Zaragoza state; Anáhuac in Nuevo Leon; Nuevo Laredo, Guerrero, Mier, Miguel Alemán, Camargo, Gustavo Díaz Ordaz, Reynosa, Río Bravo, Valle Hermoso and Matamoros, in Tamaulipas, will apply whatever timezone according to the meridian 75 west of Greenwich. - Baja California will align to meridian 105 west of Greenwich. Northern Border Seasonal Time will take effect from 2:00 a.m. on the second Sunday in March, and will end at 2:00 a.m. on the first Sunday in November. *This law will take effect from October 30th, 2022.* Fun fact: from now on, every state can change its own zone time if approved on the local legislature. You were right, I can't see Juárez (nor Ojinaga) on the published law. I hope this helps. On 10/28/22 16:56, Paul Eggert via tz wrote:
The new Mexican law was published today, here:
https://www.dof.gob.mx/nota_detalle.php?codigo=5670045&fecha=28/10/2022
I plan to see if I can understand what it says. Obviously not much notice.
On Fri, 28 Oct 2022 at 17:56, Tim Parenti <tim@timtimeonline.com> wrote:
For what it's worth, the draft law circulated in July lists the state of Chihuahua in the "Zona Pacifico", corresponding to 105°W or UTC-07. See Chapter 1, Article 3(II): http://gaceta.diputados.gob.mx/PDF/65/2022/jul/20220706-III.pdf#page=23 So the image from the Energy Secretary on Twitter, putting the entirety of Chihuahua in "Zona Centro" (UTC-06), is at least a departure from that draft. https://twitter.com/rocionahle/status/1585682205417799688 (Chapter 2 of the draft from July puts all of Chihuahua's border area into UTC-06 during US DST; that is, the status quo.)
Searching discussions around the confusion on Twitter, I also turned up this document which, among other things, has a direct comparison of the Federal Executive proposal (from July) with the text passed by the Chamber of Deputies (in September): https://infosen.senado.gob.mx/sgsp/gaceta/65/2/2022-10-25-1/assets/documento... Looks like Chihuahua was removed from Chapter 1, Article 3(II), meaning it is no longer excepted from the default in Article 3(I) of being in "Zona Centro" (UTC-06). It also looks like Chapter 2, Article 5(II) which originally specified Chihuahua's border region (containing Janos, Ascensión, Juárez, Práxedis G. Guerrero, Guadalupe, Coyame del Sotol, Ojinaga, and Mauel Benavides) was eliminated and subsequent sections renumbered. This would indeed support the claim that all of Chihuahua will be moving to year-round UTC-06 and, because it is there currently (as UTC-07+1 DST), will not change its clocks. Contrary to the image from the Energy Secretary, *no* US-style DST would be observed in any border regions of Chihuahua, including Ciudad Juárez which will end up being one hour behind El Paso in the summers. The other major change in the Transitorios is that the law now takes effect from Sunday 30 October 2022 instead of the originally proposed Tuesday 1 November. I would presume effect from 02:00 local time as I believe this is intended to effectuate the logical zone change in Chihuahua at the same time the clock change would otherwise happen in most of the state. In Juárez and other border cities, this ends up overriding the otherwise-planned US-style change on 6 November, and instead turns the change in these regions into a no-op like the rest of Chihuahua. So it seems the WHOLE state of Chihuahua does indeed move to year-round -06 on 30 October by not changing its clocks.
From what I can see in the text, border regions of Coahuila de Zaragoza, Nuevo León, and Tamaulipas in "Zona Centro", as well as the entirety of Baja California in "Zona Pacifico", will continue to observe US-style DST, falling back on 6 November 2022. (Sonora, bordering Arizona, already didn't observe DST and thus had no need for a US-style border region.). This is not quite what's pictured in the Energy Secretary's map, either.
On Fri, 28 Oct 2022 at 18:56, Paul Eggert <eggert@cs.ucla.edu> wrote:
The new Mexican law was published today, here:
https://www.dof.gob.mx/nota_detalle.php?codigo=5670045&fecha=28/10/2022
I plan to see if I can understand what it says. Obviously not much notice.
It appears that all the changes I described above (pertaining to Chihuahua) are all present in the published law as well, though there may be others upon closer inspection. So yes, this affects our predicted timestamps throughout all of Chihuahua, including Ciudad Juárez, from Sunday 02:00 -06 (0800Z), a little over 32 hours from now. -- Tim Parenti
On Fri, 28 Oct 2022 at 19:36, Tim Parenti <tim@timtimeonline.com> wrote:
including Ciudad Juárez which will end up being one hour behind El Paso in the summers.
I meant that Ciudad Juárez (remaining on -06) would be one hour AHEAD of El Paso in the WINTERS, beginning on 6 November when El Paso falls back to -07. (Things can get a little confusing when you're working quicker than usual.) One would imagine that that may end up being disruptive to local commerce, so the story may not end here… it seems that the process of amendment from executive proposal through the two chambers and into law added a third chapter on "modifications to the time zones in the Federal Entities and Municipalities". Article 6 allows local governments to send proposals to the federal government to adopt differing zones or seasonal adjustments, specifically calling out that in the case of federal entities or municipalities that adjoin other zones (including "foreign territorial demarcation[s]"), "the Congress of the Union must make the corresponding modifications to the Law…within ninety days following the presentation of the initiative". https://www.dof.gob.mx/nota_detalle.php?codigo=5670045&fecha=28/10/2022 It remains to be seen just how quickly that path might ultimately be exercised. -- Tim Parenti
On 2022-10-27 18:31, gera via tz wrote:
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.
Ouch, this is news to me, and disagrees with the TZDB patch[1] I proposed last month but have not yet installed because the bill is not yet law as far as I know. Although I found an article on this topic in Wednesday's El Heraldo de Chihuahua[2], I don't see any public government announcement of Chihuahua changing its rules this weekend. I have been unable to find the text of the bill that passed the Senate of Mexico, but which (as far as I know) has neither been signed by President López Obrador nor officially published, both of which would be needed for it to take legal effect. If you happen to know where the text of this bill is available, that would be of help to us. It would be a stretch for Mexico to publish the law today (with no advance notice of its unexpected effect on Chihuahua, and perhaps other states?) and expect TZDB and cell phones and computers to be updated by Sunday morning. So I hope this is a false alarm (while realizing it might not be). If Chihuahua is moving from -07 to -06, it would make more sense for it to do so next year, and I hope that's what will actually happen. [1] https://mm.icann.org/pipermail/tz/2022-September/031963.html [2] https://www.elheraldodechihuahua.com.mx/local/chihuahua/aprueban-en-el-senad...
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