Chile extends daylight saving time again

[Glenn Eychaner]

Here is a diff file for this year's latest Chile change; I think I have this right.  They're going to reevaluate next year, so I made it a one year change only, but if it becomes permanent, all that should need to be done is to change the 2011 rules from "only" to "max" and eliminate the 2012 rules.  Assuming that I've interpreted the new rules from the brief newspaper summaries correctly.

--- southamerica.old	2011-03-02 14:47:20.000000000 -0300
+++ southamerica	2011-03-28 10:47:24.000000000 -0300
@@ -1201,5 +1201,5 @@
 Rule	Chile	1998	only	-	Sep	27	4:00u	1:00	S
 Rule	Chile	1999	only	-	Apr	 4	3:00u	0	-
-Rule	Chile	1999	max	-	Oct	Sun>=9	4:00u	1:00	S
+Rule	Chile	1999	2010	-	Oct	Sun>=9	4:00u	1:00	S
 Rule	Chile	2000	2007	-	Mar	Sun>=9	3:00u	0	-
 # N.B.: the end of March 29 in Chile is March 30 in Universal time,
@@ -1207,5 +1207,8 @@
 Rule	Chile	2008	only	-	Mar	30	3:00u	0	-
 Rule	Chile	2009	only	-	Mar	Sun>=9	3:00u	0	-
-Rule	Chile	2010	2011	-	Apr	Sun>=1	3:00u	0	-
+Rule	Chile	2010	only	-	Apr	Sun>=1	3:00u	0	-
+Rule	Chile	2011	only	-	May	Sun>=2	3:00u	0	-
+Rule	Chile	2011	only	-	Aug	Sun>=16	4:00u	1:00	S
+Rule	Chile	2012	max	-	Oct	Sun>=9	4:00u	1:00	S
 Rule	Chile	2012	max	-	Mar	Sun>=9	3:00u	0	-
 # IATA SSIM anomalies: (1992-02) says 1992-03-14;

-G.
--
Glenn Eychaner (geychaner at lco.cl)
Telescope Systems Programmer, Las Campanas Observatory