Chilean daylight-saving transitions

[Paul Eggert]

> From: Howard, Daniel F. [mailto:HowardDF at nima.mil]
> Sent: Wednesday, June 26, 2002 1:49 PM

> Recieved report from Hydrographic and Oceanographic service of the Navy of
> Chile
> 
> Official time zone changes as follows:
> saturday March 9, 2002  At 2400 Official Continental Chile and Chiean and
> Anartic Territory adjust clocks to 2300, adopting ZT+4.
> Same day                      AT 2200 Official time of Western Insular
> Chile, adjust clocks to 2100, adopting ZT+6.

Thanks for the heads-up.  This matches the tz tables, which have
Chile's clocks springing forward at 04:00 UTC on the first Sunday on
or after October 9, and falling back at 03:00 UTC on the first Sunday
on or after March 9.  According to our sources, Chile has used the
same daylight-saving rules since October 1966, with the exception of
the drought year of 1998/1999 when they switched on September 27 and
April 4.