March 22, 2013
9:03 a.m.
On 03/22/13 07:38, Carlos Moffat wrote:
It looks like the announcment of 2013-B has Chile going from GMT-3 to GMT-4 on April 23rd and the opposite on Sep 2nd.
We should be OK; the tz data says the transitions are the first Sundays after the above dates, and that should match the announcement in the URL you gave.