Radio station XEQIN of San Quintín has a web presence:
    http://ecos.cdi.gob.mx/xeqin.html
It's a daytimer, the web page says it broadcasts from 5:00 a.m. until 7:00 p.m. Streaming wasn't working for me today here in Maryland until shortly after 9:00 a.m.; I'm now (~9:15) hearing a Spanish-language announcer who has mentioned the date, meaning it should indeed be a live stream. I haven't yet heard a time announcement, and I'm surprised the streaming started at 9:00 my time rather than 8:00 my time.

We'll see what happens in the coming days and weeks--in particular between October 25 and November 1. (If nothing else, we may produce a spike in XEQIN's ratings.)

    --ado

On Fri, Oct 9, 2015 at 8:02 PM, Matt Johnson <mj1856@hotmail.com> wrote:
+1 for America/San_Quintin.   Thanks Greg.

Also - and you guys are going to love this - I looked up the coordinates we have for America/Santa_Isabel in zone.tab, which are +3018-11452, and look what I found:


 
 


We've picked "Sierra Santa Isabel" - a mountain range.  :)


Nowhere near the actual town of Santa Isabel either. 


> To: gregsla@microsoft.com; tz@iana.org
> From: eggert@cs.ucla.edu
> Date: Fri, 9 Oct 2015 13:31:56 -0700
> Subject: Re: [tz] America/Santa_Isabel

>
> On 10/09/2015 10:47 AM, Greg Slayden wrote:
> >
> > I see conflicting information online about when DST ends there, either
> > November or October. Making contact with locals in that area is likely
> > the best way to find out
> >
>
> Yes, if we can establish that San Quintín uses Mexico's DST rules, we
> can effectively replace America/Santa_Isabel with America/San_Quintin.
> Normally we'd prefer Lázaro Cárdenas as it has more people, but it's an
> ambiguous name whereas San Quintín is not.