diff --git a/share/zoneinfo/antarctica b/share/zoneinfo/antarctica
new file mode 100644
index 000000000000..f5ed31370d50
--- /dev/null
+++ b/share/zoneinfo/antarctica
@@ -0,0 +1,19 @@
+# @(#)antarctica	7.2
+
+# From Arthur David Olson (February 13, 1988):
+# No data available.
+
+# Balleny Is
+
+# British Antarctic Territories include
+#	South Orkney Is
+#	South Shetland Is
+
+# Amsterdam Island
+# Bouvet
+# Crozet Is
+# Heard and McDonald Is
+# Kerguelen Is
+# St Paul Island
+# Peter I Island
+# Scott Island
diff --git a/share/zoneinfo/etcetera b/share/zoneinfo/etcetera
new file mode 100644
index 000000000000..ed619aecfaab
--- /dev/null
+++ b/share/zoneinfo/etcetera
@@ -0,0 +1,54 @@
+# @(#)etcetera	7.4
+
+# 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!)
+
+Zone	Etc/GMT		0	-	GMT
+Link	Etc/GMT				Etc/UTC
+Link	Etc/GMT				Etc/UCT
+Link	Etc/GMT				Etc/Universal
+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
+
+# We use POSIX-style signedness in the names and output,
+# internal-style signedness in the specifications.
+# For example, TZ=Etc/GMT+4 corresponds to 4 hours _behind_ GMT;
+# it is equivalent to TZ=GMT+4, which is implemented directly as per POSIX.
+
+# Earlier incarnations of this package were not POSIX-compliant,
+# and had lines such as
+#		Zone	GMT-12		-12	-	GMT-1200
+# We did not want things to change quietly if someone accustomed to the old
+# way does a
+#		zic -l GMT-12
+# so we moved the names into the Etc subdirectory.
+
+Zone	Etc/GMT-13	13	-	GMT-13 # 12 hours ahead of GMT, plus DST
+Zone	Etc/GMT-12	12	-	GMT-12
+Zone	Etc/GMT-11	11	-	GMT-11
+Zone	Etc/GMT-10	10	-	GMT-10
+Zone	Etc/GMT-9	9	-	GMT-9
+Zone	Etc/GMT-8	8	-	GMT-8
+Zone	Etc/GMT-7	7	-	GMT-7
+Zone	Etc/GMT-6	6	-	GMT-6
+Zone	Etc/GMT-5	5	-	GMT-5
+Zone	Etc/GMT-4	4	-	GMT-4
+Zone	Etc/GMT-3	3	-	GMT-3
+Zone	Etc/GMT-2	2	-	GMT-2
+Zone	Etc/GMT-1	1	-	GMT-1
+Zone	Etc/GMT+1	-1	-	GMT+1
+Zone	Etc/GMT+2	-2	-	GMT+2
+Zone	Etc/GMT+3	-3	-	GMT+3
+Zone	Etc/GMT+4	-4	-	GMT+4
+Zone	Etc/GMT+5	-5	-	GMT+5
+Zone	Etc/GMT+6	-6	-	GMT+6
+Zone	Etc/GMT+7	-7	-	GMT+7
+Zone	Etc/GMT+8	-8	-	GMT+8
+Zone	Etc/GMT+9	-9	-	GMT+9
+Zone	Etc/GMT+10	-10	-	GMT+10
+Zone	Etc/GMT+11	-11	-	GMT+11
+Zone	Etc/GMT+12	-12	-	GMT+12
diff --git a/share/zoneinfo/systemv b/share/zoneinfo/systemv
new file mode 100644
index 000000000000..a6f79d231a71
--- /dev/null
+++ b/share/zoneinfo/systemv
@@ -0,0 +1,35 @@
+# @(#)systemv	7.2
+
+# Old rules, should the need arise.
+# No attempt is made to handle Newfoundland, since it cannot be expressed
+# using the System V "TZ" scheme (half-hour offset), or anything outside
+# North America (no support for non-standard DST start/end dates), nor
+# the change in the DST rules in the US in 1987 (can't split between
+# Canada, with no changes, and the US)
+#
+# Be sure to compile this *without* leap second correction for true conformance.
+
+# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
+Rule	SystemV	min	1973	-	Apr	lastSun	2:00	1:00	D
+Rule	SystemV	min	1973	-	Oct	lastSun	2:00	0	S
+Rule	SystemV	1974	only	-	Jan	6	2:00	1:00	D
+Rule	SystemV	1974	only	-	Nov	lastSun	2:00	0	S
+Rule	SystemV	1975	only	-	Feb	23	2:00	1:00	D
+Rule	SystemV	1975	only	-	Oct	lastSun	2:00	0	S
+Rule	SystemV	1976	max	-	Apr	lastSun	2:00	1:00	D
+Rule	SystemV	1976	max	-	Oct	lastSun	2:00	0	S
+
+# Zone	NAME		GMTOFF	RULES/SAVE	FORMAT	[UNTIL]
+Zone	SystemV/AST4ADT	-4:00	SystemV		A%sT
+Zone	SystemV/EST5EDT	-5:00	SystemV		E%sT
+Zone	SystemV/CST6CDT	-6:00	SystemV		C%sT
+Zone	SystemV/MST7MDT	-7:00	SystemV		M%sT
+Zone	SystemV/PST8PDT	-8:00	SystemV		P%sT
+Zone	SystemV/YST9YDT	-9:00	SystemV		Y%sT
+Zone	SystemV/AST4	-4:00	-		AST
+Zone	SystemV/EST5	-5:00	-		EST
+Zone	SystemV/CST6	-6:00	-		CST
+Zone	SystemV/MST7	-7:00	-		MST
+Zone	SystemV/PST8	-8:00	-		PST
+Zone	SystemV/YST9	-9:00	-		YST
+Zone	SystemV/HST10	-10:00	-		HST
diff --git a/share/zoneinfo/yearistype.sh b/share/zoneinfo/yearistype.sh
new file mode 100755
index 000000000000..42ef29bbe879
--- /dev/null
+++ b/share/zoneinfo/yearistype.sh
@@ -0,0 +1,18 @@
+#! /bin/sh
+
+: '@(#)yearistype.sh	7.2'
+
+case $#-$2 in
+	2-odd)	case $1 in
+			*[13579])	exit 0 ;;
+			*)		exit 1 ;;
+		esac ;;
+	2-even)	case $1 in
+			*[24680])	exit 0 ;;
+			*)		exit 1 ;;
+		esac ;;
+	2-*)	echo "$0: wild type - $2" >&2
+		exit 1 ;;
+	*)	echo "$0: usage is $0 year type" >&2
+		exit 1 ;;
+esac