From 483247fc9b735097ff2c06531204913317a5056c Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Fri, 18 Mar 2016 11:05:06 -0700
Subject: [PATCH] Adjust Easter Island transitions to match decree

* NEWS, southamerica (Chile): 2016 and later transitions are at
24:00 local time, not at 24:00 mainland time.
---
 NEWS         | 10 +++++-----
 southamerica | 31 +++++++++++++++----------------
 2 files changed, 20 insertions(+), 21 deletions(-)

diff --git a/NEWS b/NEWS
index e60f0d3..fabc6f4 100644
--- a/NEWS
+++ b/NEWS
@@ -8,11 +8,11 @@ Unreleased, experimental changes
 
     Chile reverts from permanent to seasonal DST.  (Thanks to Juan
     Correa for the heads-up, and to Tim Parenti for corrections.)
-    Guess that future America/Santiago and Antarctica/Palmer
-    transitions are August's and May's second Saturdays at 24:00 local
-    time, and that Pacific/Easter stays two hours behind.  Also, call
-    the period from 2014-09-07 through 2016-05-14 daylight saving time
-    instead of standard time, as that seems more appropriate now.
+    Guess that future transitions are August's and May's second
+    Saturdays at 24:00 local time; this differs from the previous
+    practice of 24:00 mainland time.  Also, call the period from
+    2014-09-07 through 2016-05-14 daylight saving time instead of
+    standard time, as that seems more appropriate now.
 
 
 Release 2016b - 2016-03-12 17:30:14 -0800
diff --git a/southamerica b/southamerica
index 63e719c..38f63d9 100644
--- a/southamerica
+++ b/southamerica
@@ -1221,20 +1221,19 @@ Zone America/Rio_Branco	-4:31:12 -	LMT	1914
 # From Paul Eggert (2015-03-03):
 # For now, assume that the extension will persist indefinitely.
 
-# From Juan Correa (2016-03-13):
-# Today the Chilean Ministry of Energy announced that they will go back to a
-# DST scheme this year.  That means clocks will go back 1 hour at 00:00 May
-# 15th (jumping back to May 14th); and will go forward by 1 hour on 00:00,
-# August 14th.  This was decided after a public outcry during winter, when the
-# sunrise for Santiago went as late as 08:45....
-# http://www.soychile.cl/Santiago/Sociedad/2016/03/13/380779/Vuelve-el-horario-de-invierno-a-partir-de-la-segunda-semana-de-mayo.aspx
-# http://www.biobiochile.cl/2016/03/13/gobierno-retrocede-y-decreta-el-regreso-del-horario-de-invierno.shtml
-# http://www.t13.cl/noticia/nacional/chile-volvera-implementar-horario-invierno
-#
-# From Paul Eggert (2016-03-14):
-# For now, guess that future transitions are May's and August's second
-# Saturdays at 24:00 local time, and that Pacific/Easter always stays 2
-# hours behind.
+# From Juan Correa (2016-03-18):
+# The decree regarding DST has been published in today's Official Gazette:
+# http://www.diariooficial.interior.gob.cl/versiones-anteriores/do/20160318/
+# http://www.leychile.cl/Navegar?idNorma=1088502
+# It does consider the second Saturday of May and August as the dates
+# for the transition; and it lists DST dates until 2019, but I think
+# this scheme will stick.
+#
+# From Paul Eggert (2016-03-18):
+# The decree says transitions occur at 24:00 local time, which differs
+# from the 2008 transitions, which were documented to occur at 24:00
+# on the mainland and 22:00 in Easter Island.  Guess that this new
+# practice starts this year and continues indefinitely.
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Chile	1927	1931	-	Sep	 1	0:00	1:00	S
@@ -1269,8 +1268,8 @@ 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	2014	-	Apr	Sun>=23	3:00u	0	-
 Rule	Chile	2012	2014	-	Sep	Sun>=2	4:00u	1:00	S
-Rule	Chile	2016	max	-	May	Sun>=9	3:00u	0	-
-Rule	Chile	2016	max	-	Aug	Sun>=9	4:00u	1:00	S
+Rule	Chile	2016	max	-	May	Sat>=8	24:00	0	-
+Rule	Chile	2016	max	-	Aug	Sat>=8	24:00	1:00	S
 # IATA SSIM anomalies: (1992-02) says 1992-03-14;
 # (1996-09) says 1998-03-08.  Ignore these.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-- 
2.5.0

