diff --git a/share/zoneinfo/antarctica b/share/zoneinfo/antarctica
index 0c78eb68269d..b4a7d397a34f 100644
--- a/share/zoneinfo/antarctica
+++ b/share/zoneinfo/antarctica
@@ -1,4 +1,4 @@
-# @(#)antarctica	7.4
+# @(#)antarctica	7.5
 
 # From Paul Eggert (1996-09-03):
 # To keep things manageable, we list only locations occupied year-round;
@@ -8,6 +8,20 @@
 # I made up all time zone abbreviations mentioned here; corrections welcome!
 # FORMAT is `___' and GMTOFF is 0 for locations while uninhabited.
 
+# These rules are stolen from the `southamerica' file.
+# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
+Rule	ArgAQ	1964	1966	-	Mar	 1	0:00	0	-
+Rule	ArgAQ	1964	1966	-	Oct	15	0:00	1:00	S
+Rule	ArgAQ	1967	only	-	Apr	 1	0:00	0	-
+Rule	ArgAQ	1967	1968	-	Oct	Sun<=7	0:00	1:00	S
+Rule	ArgAQ	1968	1969	-	Apr	Sun<=7	0:00	0	-
+Rule	ArgAQ	1974	only	-	Jan	23	0:00	1:00	S
+Rule	ArgAQ	1974	only	-	May	 1	0:00	0	-
+Rule	ArgAQ	1974	1976	-	Oct	Sun<=7	0:00	1:00	S
+Rule	ArgAQ	1975	1977	-	Apr	Sun<=7	0:00	0	-
+Rule	ChileAQ	1969	max	-	Oct	Sun>=9	0:00	1:00	S
+Rule	ChileAQ	1970	max	-	Mar	Sun>=9	0:00	0	-
+
 
 # Argentina - 6 year-round bases
 # General Belgrano II
@@ -118,7 +132,21 @@ Rule	NZAQ	1990	max	-	Mar	Sun>=15	2:00s	0	S
 
 # USA - year-round bases
 #
-# Palmer, Anvers Island
+# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
+#
+# From Ethan Dicks <erd@mcmsun5.mcmurdo.gov> (1996-10-06):
+# It keeps the same time as Punta Arenas, Chile, because, just like us
+# and the South Pole, that's the other end of their supply line....
+# I verified with someone who was there that since 1980,
+# Palmer has followed Chile.  Prior to that, before the Falklands War,
+# Palmer used to be supplied from Argentina.
+#
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone Antarctica/Palmer	0	-	___	1965
+			-4:00	ArgAQ	AR%sT	1969 Oct 5
+			-3:00	ArgAQ	AR%sT	1982 May
+			-4:00	ChileAQ	CL%sT
+#
 #
 # McMurdo, Ross Island, since 1956
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
diff --git a/share/zoneinfo/etcetera b/share/zoneinfo/etcetera
index 73ad68ee0aa3..c47fae7a68c3 100644
--- a/share/zoneinfo/etcetera
+++ b/share/zoneinfo/etcetera
@@ -1,15 +1,19 @@
-# @(#)etcetera	7.5
+# @(#)etcetera	7.6
 
-# All of these are set up just so people can "zic -l" to a timezone
-# that's right for their area, even if it doesn't have a name or DST rules
-# (half hour zones are too much to bother with -- when someone asks!)
+# These entries are mostly present for historical reasons, so that
+# people in areas not otherwise covered by the tz files could "zic -l"
+# to a time zone that was right for their area.  These days, the
+# tz files cover almost all the inhabited world, so there's little
+# need now for the entries that are not on UTC.
 
 Zone	Etc/GMT		0	-	GMT
-Link	Etc/GMT				Etc/UTC
-Link	Etc/GMT				Etc/UCT
-Link	Etc/GMT				Etc/Universal
+Zone	Etc/UTC		0	-	UTC
+Zone	Etc/UCT		0	-	UCT
+
+Link	Etc/UTC				Etc/Universal
+Link	Etc/UTC				Etc/Zulu
+
 Link	Etc/GMT				Etc/Greenwich
-Link	Etc/GMT				Etc/Zulu
 Link	Etc/GMT				Etc/GMT-0
 Link	Etc/GMT				Etc/GMT+0
 Link	Etc/GMT				Etc/GMT0