diff --git a/lib/Time/Zone.pm b/lib/Time/Zone.pm
index 072169e..4859e66 100644
--- a/lib/Time/Zone.pm
+++ b/lib/Time/Zone.pm
@@ -206,9 +206,12 @@ CONFIG: {
         "fst"  =>   +2*3600,     # French Summer
         "eest" =>   +3*3600,     # Eastern European Summer
         "msd"  =>   +4*3600,     # Moscow Daylight (historical; Russia abolished DST permanently in Oct 2014)
+        "west" =>   +1*3600,     # Western European Summer
+        "irdt" =>   +4*3600+1800,# Iran Daylight
         "wadt" =>   +8*3600,     # West Australian Daylight
+        "awdt" =>   +9*3600,     # Australian Western Daylight
         "kdt"  =>  +10*3600,     # Korean Daylight
-    #   "cadt" =>  +10*3600+1800,    # Central Australian Daylight
+        "acdt" =>  +10*3600+1800,# Australian Central Daylight
         "aedt" =>  +11*3600,     # Eastern Australian Daylight
         "eadt" =>  +11*3600,     # Eastern Australian Daylight
         "nzd"  =>  +13*3600,     # New Zealand Daylight
@@ -252,13 +255,19 @@ CONFIG: {
         "swt"   =>  +1*3600,     # Swedish Winter
         "set"   =>  +1*3600,     # Seychelles
         "fwt"   =>  +1*3600,     # French Winter
+        "sast"  =>  +2*3600,     # South African Standard
         "eet"   =>  +2*3600,     # Eastern Europe, USSR Zone 1
         "ukr"   =>  +2*3600,     # Ukraine
         "bt"    =>  +3*3600,     # Baghdad, USSR Zone 2
+        "eat"   =>  +3*3600,     # East Africa
         "msk"   =>  +3*3600,     # Moscow (UTC+3; was UTC+4 in 2011-2014 when Russia used permanent DST, reverted Oct 2014)
-    #   "it"    =>  +3*3600+1800,# Iran
+        "trt"   =>  +3*3600,     # Turkey
+        "irst"  =>  +3*3600+1800,# Iran Standard
+        "aft"   =>  +4*3600+1800,# Afghanistan
         "zp4"   =>  +4*3600,     # USSR Zone 3
+        "pkt"   =>  +5*3600,     # Pakistan Standard
         "zp5"   =>  +5*3600,     # USSR Zone 4
+        "npt"   =>  +5*3600+2700,# Nepal (+5:45)
         "ist"   =>  +5*3600+1800,# Indian Standard
         "zp6"   =>  +6*3600,     # USSR Zone 5
     # For completeness.  NST is also Newfoundland Stanard, and SST is also Swedish Summer.
@@ -267,12 +276,13 @@ CONFIG: {
         "ict"   =>  +7*3600,     # Indochina Time
     #   "jt"    =>  +7*3600+1800,# Java (3pm in Cronusland!)
         "wst"   =>  +8*3600,     # West Australian Standard
+        "awst"  =>  +8*3600,     # Australian Western Standard
         "pht"   =>  +8*3600,     # Philippine Time
         "hkt"   =>  +8*3600,     # Hong Kong
         "cct"   =>  +8*3600,     # China Coast, USSR Zone 7
         "jst"   =>  +9*3600,     # Japan Standard, USSR Zone 8
         "kst"   =>  +9*3600,     # Korean Standard
-    #   "cast"  =>  +9*3600+1800,# Central Australian Standard
+        "acst"  =>  +9*3600+1800,# Australian Central Standard
         "aest"  => +10*3600,     # Eastern Australian Standard
         "east"  => +10*3600,     # Eastern Australian Standard
         "gst"   => +10*3600,     # Guam Standard, USSR Zone 9
diff --git a/t/zone.t b/t/zone.t
index e3c5cf4..17c75a6 100644
--- a/t/zone.t
+++ b/t/zone.t
@@ -40,6 +40,29 @@ is(tz_offset("PHT"),  28800, "tz_offset PHT = 28800 (Philippine Time, UTC+8)");
 is(tz_offset("ict"),  25200, "tz_offset ict case insensitive");
 is(tz_offset("pht"),  28800, "tz_offset pht case insensitive");
 
+# tz_offset: Australian timezone abbreviations
+is(tz_offset("ACST"), 34200,  "tz_offset ACST = 34200 (Australian Central Standard, UTC+9:30)");
+is(tz_offset("ACDT"), 37800,  "tz_offset ACDT = 37800 (Australian Central Daylight, UTC+10:30)");
+is(tz_offset("AEST"), 36000,  "tz_offset AEST = 36000 (Australian Eastern Standard, UTC+10)");
+is(tz_offset("AEDT"), 39600,  "tz_offset AEDT = 39600 (Australian Eastern Daylight, UTC+11)");
+is(tz_offset("AWST"), 28800,  "tz_offset AWST = 28800 (Australian Western Standard, UTC+8)");
+is(tz_offset("AWDT"), 32400,  "tz_offset AWDT = 32400 (Australian Western Daylight, UTC+9)");
+
+# tz_offset: African timezone abbreviations
+is(tz_offset("SAST"), 7200,   "tz_offset SAST = 7200 (South African Standard, UTC+2)");
+is(tz_offset("EAT"),  10800,  "tz_offset EAT = 10800 (East Africa, UTC+3)");
+
+# tz_offset: Middle East and South Asian timezone abbreviations
+is(tz_offset("TRT"),  10800,  "tz_offset TRT = 10800 (Turkey, UTC+3)");
+is(tz_offset("IRST"), 12600,  "tz_offset IRST = 12600 (Iran Standard, UTC+3:30)");
+is(tz_offset("IRDT"), 16200,  "tz_offset IRDT = 16200 (Iran Daylight, UTC+4:30)");
+is(tz_offset("AFT"),  16200,  "tz_offset AFT = 16200 (Afghanistan, UTC+4:30)");
+is(tz_offset("PKT"),  18000,  "tz_offset PKT = 18000 (Pakistan Standard, UTC+5)");
+is(tz_offset("NPT"),  20700,  "tz_offset NPT = 20700 (Nepal, UTC+5:45)");
+
+# tz_offset: European DST abbreviations
+is(tz_offset("WEST"), 3600,   "tz_offset WEST = 3600 (Western European Summer, UTC+1)");
+
 # tz_offset: unknown zone returns undef
 is(tz_offset("BOGUS"), undef, "tz_offset unknown zone returns undef");