The decree that modifies the Mexican Hour System Law has finally been published at the Diario Oficial de la Federación (http://www.dof.gob.mx/nota_detalle.php?codigo=5380123&fecha=31/01/2015). It establishes 5 zones for Mexico:

1- Zona Centro (Central Zone): Corresponds to longitude 90 W, includes most of Mexico, excluding what's mentioned below.
2- Zona Pacífico (Pacific Zone): Longitude 105 W, includes the states of Baja California Sur; Chihuahua; Nayarit (excluding Bahía de Banderas which lies in Central Zone); Sinaloa and Sonora.
3- Zone Noroeste (Northwest Zone): Longitude 120 W, includes the state of Baja California.
4- Zona Sureste (Southeast Zone): Longitude 75 W, includes the state of Quintana Roo.
5- The islands, reefs and keys shall take their timezone from the longitude they are located at.

Data in v. 2015a reflect these changes.

Saludos,

Carlos

On Wed, Jan 28, 2015 at 3:29 PM, Paul Eggert <eggert@cs.ucla.edu> wrote:
On 01/18/2015 04:57 PM, Tim Parenti wrote:
As for 0003, which carves out a new zone for Felipe Carrillo Puerto's divergent history, it's not clear the extent to which this is actually necessary.  What did FCP actually do between 1998 and the present?  Would someone calling local offices be effective in helping us find out?  (In the meantime, I've simply created this patch so we can at least get a sense of what it might look like; I don't actually feel that it should be applied at this time until these questions are resolved.)

 Thanks for preparing those patches.  I think you're right, we're not enough sure about America/FCP_QRoo to put it in.  I did push it into the experimental repository, along with some minor followup fixups, but decided to revert it.  Your other patches look fine, and I've pushed them with the attached minor additional change (since the Q Roo patch is more important than the leap second patch).

It's time for a new release soon, what with this and the Chile changes.