Chile changes DST rules from 2019-04-06.

* southamerica (Chile): Change DST dates to be observed from the first
Saturday in September at 24:00 mainland time until the first Saturday
in April at 24:00 mainland time, beginning with the change to Winter
Time on 2019-04-06.
* NEWS: Mention this.

Author: timparenti

NEWS

@@ -4,13 +4,20 @@ Unreleased, experimental changes
 
   Briefly:
   Fiji ends DST 2019-01-13, not 2019-01-20.
+  Most of Chile changes DST dates, effective 2019-04-06.
 
   Changes to future timestamps
 
     Fiji ends DST 2019-01-13 instead of the 2019-01-20 previously
     predicted.  (Thanks to Raymond Kumar.)  Adjust future predictions
     accordingly.
 
+    Most of Chile will end DST on the first Saturday in April at 24:00 mainland
+    time, and resume DST on the first Saturday in September at 24:00 mainland
+    time.  The changes are effective from 2019-04-06, and do not affect the
+    Magallanes region modeled by America/Punta_Arenas.  (Thanks to Juan Correa
+    and Tim Parenti.)  Adjust future predictions accordingly.
+
   Changes to past timestamps
 
     The 2018-05-05 North Korea 30-minute time zone change took place

southamerica

@@ -1233,6 +1233,24 @@ Zone America/Rio_Branco	-4:31:12 -	LMT	1914
 # they will switch from -03 to -04 one hour after Santiago does that day.
 # For now, assume that they will not revert.
 
+# From Juan Correa (2018-08-13):
+# As of moments ago, the Ministry of Energy in Chile has announced the new
+# schema for DST. ...  Announcement in video (in Spanish):
+# https://twitter.com/MinEnergia/status/1029000399129374720
+# From Yonathan Dossow (2018-08-13):
+# The video says "first Saturday of September", we all know it means Sunday at
+# midnight.
+# From Tim Parenti (2018-08-13):
+# Translating the captions on the video at 0:44-0:55, "We want to announce as
+# Government that from 2019, Winter Time will be increased to 5 months, between
+# the first Saturday of April and the first Saturday of September."
+# At 2:08-2:20, "The Magallanes region will maintain its current time, as
+# decided by the citizens during 2017, but our Government will promote a
+# regional dialogue table to gather their opinion on this matter."
+# https://twitter.com/MinEnergia/status/1029009354001973248
+# "We will keep the new time policy unchanged for at least the next 4 years."
+# So we extend the new rules on Saturdays at 24:00 mainland time indefinitely.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Chile	1927	1931	-	Sep	 1	0:00	1:00	-
 Rule	Chile	1928	1932	-	Apr	 1	0:00	0	-
@@ -1266,8 +1284,10 @@ Rule	Chile	2011	only	-	May	Sun>=2	3:00u	0	-
 Rule	Chile	2011	only	-	Aug	Sun>=16	4:00u	1:00	-
 Rule	Chile	2012	2014	-	Apr	Sun>=23	3:00u	0	-
 Rule	Chile	2012	2014	-	Sep	Sun>=2	4:00u	1:00	-
-Rule	Chile	2016	max	-	May	Sun>=9	3:00u	0	-
-Rule	Chile	2016	max	-	Aug	Sun>=9	4:00u	1:00	-
+Rule	Chile	2016	2018	-	May	Sun>=9	3:00u	0	-
+Rule	Chile	2016	2018	-	Aug	Sun>=9	4:00u	1:00	-
+Rule	Chile	2019	max	-	Apr	Sun>=2	3:00u	0	-
+Rule	Chile	2019	max	-	Sep	Sun>=2	4:00u	1:00	-
 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
 # (1996-09) says 1998-03-08.  Ignore these.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]