diff --git a/pkg/apis/batch/validation/validation.go b/pkg/apis/batch/validation/validation.go
index 2efb83bb064..26c365b2f98 100644
--- a/pkg/apis/batch/validation/validation.go
+++ b/pkg/apis/batch/validation/validation.go
@@ -18,10 +18,12 @@ package validation
 
 import (
 	"fmt"
+	"regexp"
 	"strings"
 	"time"
 
 	"github.com/robfig/cron/v3"
+
 	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	unversionedvalidation "k8s.io/apimachinery/pkg/apis/meta/v1/validation"
@@ -502,6 +504,16 @@ func validateScheduleFormat(schedule string, timeZone *string, fldPath *field.Pa
 	return allErrs
 }
 
+// https://data.iana.org/time-zones/theory.html#naming
+// * A name must not be empty, or contain '//', or start or end with '/'.
+// * Do not use the file name components '.' and '..'.
+// * Within a file name component, use only ASCII letters, '.', '-' and '_'.
+// * Do not use digits, as that might create an ambiguity with POSIX TZ strings.
+// * A file name component must not exceed 14 characters or start with '-'
+//
+// 0-9 and + characters are tolerated to accommodate legacy compatibility names
+var validTimeZoneCharacters = regexp.MustCompile(`^[A-Za-z\.\-_0-9+]{1,14}$`)
+
 func validateTimeZone(timeZone *string, fldPath *field.Path) field.ErrorList {
 	allErrs := field.ErrorList{}
 	if timeZone == nil {
@@ -513,6 +525,13 @@ func validateTimeZone(timeZone *string, fldPath *field.Path) field.ErrorList {
 		return allErrs
 	}
 
+	for _, part := range strings.Split(*timeZone, "/") {
+		if part == "." || part == ".." || strings.HasPrefix(part, "-") || !validTimeZoneCharacters.MatchString(part) {
+			allErrs = append(allErrs, field.Invalid(fldPath, timeZone, fmt.Sprintf("unknown time zone %s", *timeZone)))
+			return allErrs
+		}
+	}
+
 	if strings.EqualFold(*timeZone, "Local") {
 		allErrs = append(allErrs, field.Invalid(fldPath, timeZone, "timeZone must be an explicit time zone as defined in https://www.iana.org/time-zones"))
 	}
diff --git a/pkg/apis/batch/validation/validation_test.go b/pkg/apis/batch/validation/validation_test.go
index 8ac6af9593b..401950fc8a6 100644
--- a/pkg/apis/batch/validation/validation_test.go
+++ b/pkg/apis/batch/validation/validation_test.go
@@ -17,6 +17,8 @@ limitations under the License.
 package validation
 
 import (
+	_ "time/tzdata"
+
 	"archive/zip"
 	"fmt"
 	"io"
@@ -28,6 +30,7 @@ import (
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
+
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/validation/field"
@@ -1652,6 +1655,23 @@ func TestValidateCronJob(t *testing.T) {
 				},
 			},
 		},
+		"spec.timeZone: Invalid value: \"Continent/Zone \": unknown time zone Continent/Zone ": {
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      "mycronjob",
+				Namespace: metav1.NamespaceDefault,
+				UID:       types.UID("1a2b3c"),
+			},
+			Spec: batch.CronJobSpec{
+				Schedule:          "0 * * * *",
+				TimeZone:          &timeZoneBadSuffix,
+				ConcurrencyPolicy: batch.AllowConcurrent,
+				JobTemplate: batch.JobTemplateSpec{
+					Spec: batch.JobSpec{
+						Template: validPodTemplateSpec,
+					},
+				},
+			},
+		},
 		"spec.startingDeadlineSeconds:must be greater than or equal to 0": {
 			ObjectMeta: metav1.ObjectMeta{
 				Name:      "mycronjob",
@@ -1883,28 +1903,6 @@ func TestValidateCronJob(t *testing.T) {
 		},
 	}
 
-	// NOTE: The following test doesn't fail on Windows.
-	// When opening a file on Windows, syscall.Open is called, which will trim the whitespace suffix.
-	if runtime.GOOS != "windows" {
-		errorCases["spec.timeZone: Invalid value: \"Continent/Zone \": unknown time zone Continent/Zone "] = batch.CronJob{
-			ObjectMeta: metav1.ObjectMeta{
-				Name:      "mycronjob",
-				Namespace: metav1.NamespaceDefault,
-				UID:       types.UID("1a2b3c"),
-			},
-			Spec: batch.CronJobSpec{
-				Schedule:          "0 * * * *",
-				TimeZone:          &timeZoneBadSuffix,
-				ConcurrencyPolicy: batch.AllowConcurrent,
-				JobTemplate: batch.JobTemplateSpec{
-					Spec: batch.JobSpec{
-						Template: validPodTemplateSpec,
-					},
-				},
-			},
-		}
-	}
-
 	for k, v := range errorCases {
 		t.Run(k, func(t *testing.T) {
 			errs := ValidateCronJobCreate(&v, corevalidation.PodValidationOptions{})
@@ -2185,3 +2183,610 @@ func TestValidateCronJobSpec(t *testing.T) {
 func completionModePtr(m batch.CompletionMode) *batch.CompletionMode {
 	return &m
 }
+
+func TestTimeZones(t *testing.T) {
+	// all valid time zones as of go1.19 release on 2022-08-02
+	data := []string{
+		`Africa/Abidjan`,
+		`Africa/Accra`,
+		`Africa/Addis_Ababa`,
+		`Africa/Algiers`,
+		`Africa/Asmara`,
+		`Africa/Asmera`,
+		`Africa/Bamako`,
+		`Africa/Bangui`,
+		`Africa/Banjul`,
+		`Africa/Bissau`,
+		`Africa/Blantyre`,
+		`Africa/Brazzaville`,
+		`Africa/Bujumbura`,
+		`Africa/Cairo`,
+		`Africa/Casablanca`,
+		`Africa/Ceuta`,
+		`Africa/Conakry`,
+		`Africa/Dakar`,
+		`Africa/Dar_es_Salaam`,
+		`Africa/Djibouti`,
+		`Africa/Douala`,
+		`Africa/El_Aaiun`,
+		`Africa/Freetown`,
+		`Africa/Gaborone`,
+		`Africa/Harare`,
+		`Africa/Johannesburg`,
+		`Africa/Juba`,
+		`Africa/Kampala`,
+		`Africa/Khartoum`,
+		`Africa/Kigali`,
+		`Africa/Kinshasa`,
+		`Africa/Lagos`,
+		`Africa/Libreville`,
+		`Africa/Lome`,
+		`Africa/Luanda`,
+		`Africa/Lubumbashi`,
+		`Africa/Lusaka`,
+		`Africa/Malabo`,
+		`Africa/Maputo`,
+		`Africa/Maseru`,
+		`Africa/Mbabane`,
+		`Africa/Mogadishu`,
+		`Africa/Monrovia`,
+		`Africa/Nairobi`,
+		`Africa/Ndjamena`,
+		`Africa/Niamey`,
+		`Africa/Nouakchott`,
+		`Africa/Ouagadougou`,
+		`Africa/Porto-Novo`,
+		`Africa/Sao_Tome`,
+		`Africa/Timbuktu`,
+		`Africa/Tripoli`,
+		`Africa/Tunis`,
+		`Africa/Windhoek`,
+		`America/Adak`,
+		`America/Anchorage`,
+		`America/Anguilla`,
+		`America/Antigua`,
+		`America/Araguaina`,
+		`America/Argentina/Buenos_Aires`,
+		`America/Argentina/Catamarca`,
+		`America/Argentina/ComodRivadavia`,
+		`America/Argentina/Cordoba`,
+		`America/Argentina/Jujuy`,
+		`America/Argentina/La_Rioja`,
+		`America/Argentina/Mendoza`,
+		`America/Argentina/Rio_Gallegos`,
+		`America/Argentina/Salta`,
+		`America/Argentina/San_Juan`,
+		`America/Argentina/San_Luis`,
+		`America/Argentina/Tucuman`,
+		`America/Argentina/Ushuaia`,
+		`America/Aruba`,
+		`America/Asuncion`,
+		`America/Atikokan`,
+		`America/Atka`,
+		`America/Bahia`,
+		`America/Bahia_Banderas`,
+		`America/Barbados`,
+		`America/Belem`,
+		`America/Belize`,
+		`America/Blanc-Sablon`,
+		`America/Boa_Vista`,
+		`America/Bogota`,
+		`America/Boise`,
+		`America/Buenos_Aires`,
+		`America/Cambridge_Bay`,
+		`America/Campo_Grande`,
+		`America/Cancun`,
+		`America/Caracas`,
+		`America/Catamarca`,
+		`America/Cayenne`,
+		`America/Cayman`,
+		`America/Chicago`,
+		`America/Chihuahua`,
+		`America/Coral_Harbour`,
+		`America/Cordoba`,
+		`America/Costa_Rica`,
+		`America/Creston`,
+		`America/Cuiaba`,
+		`America/Curacao`,
+		`America/Danmarkshavn`,
+		`America/Dawson`,
+		`America/Dawson_Creek`,
+		`America/Denver`,
+		`America/Detroit`,
+		`America/Dominica`,
+		`America/Edmonton`,
+		`America/Eirunepe`,
+		`America/El_Salvador`,
+		`America/Ensenada`,
+		`America/Fort_Nelson`,
+		`America/Fort_Wayne`,
+		`America/Fortaleza`,
+		`America/Glace_Bay`,
+		`America/Godthab`,
+		`America/Goose_Bay`,
+		`America/Grand_Turk`,
+		`America/Grenada`,
+		`America/Guadeloupe`,
+		`America/Guatemala`,
+		`America/Guayaquil`,
+		`America/Guyana`,
+		`America/Halifax`,
+		`America/Havana`,
+		`America/Hermosillo`,
+		`America/Indiana/Indianapolis`,
+		`America/Indiana/Knox`,
+		`America/Indiana/Marengo`,
+		`America/Indiana/Petersburg`,
+		`America/Indiana/Tell_City`,
+		`America/Indiana/Vevay`,
+		`America/Indiana/Vincennes`,
+		`America/Indiana/Winamac`,
+		`America/Indianapolis`,
+		`America/Inuvik`,
+		`America/Iqaluit`,
+		`America/Jamaica`,
+		`America/Jujuy`,
+		`America/Juneau`,
+		`America/Kentucky/Louisville`,
+		`America/Kentucky/Monticello`,
+		`America/Knox_IN`,
+		`America/Kralendijk`,
+		`America/La_Paz`,
+		`America/Lima`,
+		`America/Los_Angeles`,
+		`America/Louisville`,
+		`America/Lower_Princes`,
+		`America/Maceio`,
+		`America/Managua`,
+		`America/Manaus`,
+		`America/Marigot`,
+		`America/Martinique`,
+		`America/Matamoros`,
+		`America/Mazatlan`,
+		`America/Mendoza`,
+		`America/Menominee`,
+		`America/Merida`,
+		`America/Metlakatla`,
+		`America/Mexico_City`,
+		`America/Miquelon`,
+		`America/Moncton`,
+		`America/Monterrey`,
+		`America/Montevideo`,
+		`America/Montreal`,
+		`America/Montserrat`,
+		`America/Nassau`,
+		`America/New_York`,
+		`America/Nipigon`,
+		`America/Nome`,
+		`America/Noronha`,
+		`America/North_Dakota/Beulah`,
+		`America/North_Dakota/Center`,
+		`America/North_Dakota/New_Salem`,
+		`America/Nuuk`,
+		`America/Ojinaga`,
+		`America/Panama`,
+		`America/Pangnirtung`,
+		`America/Paramaribo`,
+		`America/Phoenix`,
+		`America/Port-au-Prince`,
+		`America/Port_of_Spain`,
+		`America/Porto_Acre`,
+		`America/Porto_Velho`,
+		`America/Puerto_Rico`,
+		`America/Punta_Arenas`,
+		`America/Rainy_River`,
+		`America/Rankin_Inlet`,
+		`America/Recife`,
+		`America/Regina`,
+		`America/Resolute`,
+		`America/Rio_Branco`,
+		`America/Rosario`,
+		`America/Santa_Isabel`,
+		`America/Santarem`,
+		`America/Santiago`,
+		`America/Santo_Domingo`,
+		`America/Sao_Paulo`,
+		`America/Scoresbysund`,
+		`America/Shiprock`,
+		`America/Sitka`,
+		`America/St_Barthelemy`,
+		`America/St_Johns`,
+		`America/St_Kitts`,
+		`America/St_Lucia`,
+		`America/St_Thomas`,
+		`America/St_Vincent`,
+		`America/Swift_Current`,
+		`America/Tegucigalpa`,
+		`America/Thule`,
+		`America/Thunder_Bay`,
+		`America/Tijuana`,
+		`America/Toronto`,
+		`America/Tortola`,
+		`America/Vancouver`,
+		`America/Virgin`,
+		`America/Whitehorse`,
+		`America/Winnipeg`,
+		`America/Yakutat`,
+		`America/Yellowknife`,
+		`Antarctica/Casey`,
+		`Antarctica/Davis`,
+		`Antarctica/DumontDUrville`,
+		`Antarctica/Macquarie`,
+		`Antarctica/Mawson`,
+		`Antarctica/McMurdo`,
+		`Antarctica/Palmer`,
+		`Antarctica/Rothera`,
+		`Antarctica/South_Pole`,
+		`Antarctica/Syowa`,
+		`Antarctica/Troll`,
+		`Antarctica/Vostok`,
+		`Arctic/Longyearbyen`,
+		`Asia/Aden`,
+		`Asia/Almaty`,
+		`Asia/Amman`,
+		`Asia/Anadyr`,
+		`Asia/Aqtau`,
+		`Asia/Aqtobe`,
+		`Asia/Ashgabat`,
+		`Asia/Ashkhabad`,
+		`Asia/Atyrau`,
+		`Asia/Baghdad`,
+		`Asia/Bahrain`,
+		`Asia/Baku`,
+		`Asia/Bangkok`,
+		`Asia/Barnaul`,
+		`Asia/Beirut`,
+		`Asia/Bishkek`,
+		`Asia/Brunei`,
+		`Asia/Calcutta`,
+		`Asia/Chita`,
+		`Asia/Choibalsan`,
+		`Asia/Chongqing`,
+		`Asia/Chungking`,
+		`Asia/Colombo`,
+		`Asia/Dacca`,
+		`Asia/Damascus`,
+		`Asia/Dhaka`,
+		`Asia/Dili`,
+		`Asia/Dubai`,
+		`Asia/Dushanbe`,
+		`Asia/Famagusta`,
+		`Asia/Gaza`,
+		`Asia/Harbin`,
+		`Asia/Hebron`,
+		`Asia/Ho_Chi_Minh`,
+		`Asia/Hong_Kong`,
+		`Asia/Hovd`,
+		`Asia/Irkutsk`,
+		`Asia/Istanbul`,
+		`Asia/Jakarta`,
+		`Asia/Jayapura`,
+		`Asia/Jerusalem`,
+		`Asia/Kabul`,
+		`Asia/Kamchatka`,
+		`Asia/Karachi`,
+		`Asia/Kashgar`,
+		`Asia/Kathmandu`,
+		`Asia/Katmandu`,
+		`Asia/Khandyga`,
+		`Asia/Kolkata`,
+		`Asia/Krasnoyarsk`,
+		`Asia/Kuala_Lumpur`,
+		`Asia/Kuching`,
+		`Asia/Kuwait`,
+		`Asia/Macao`,
+		`Asia/Macau`,
+		`Asia/Magadan`,
+		`Asia/Makassar`,
+		`Asia/Manila`,
+		`Asia/Muscat`,
+		`Asia/Nicosia`,
+		`Asia/Novokuznetsk`,
+		`Asia/Novosibirsk`,
+		`Asia/Omsk`,
+		`Asia/Oral`,
+		`Asia/Phnom_Penh`,
+		`Asia/Pontianak`,
+		`Asia/Pyongyang`,
+		`Asia/Qatar`,
+		`Asia/Qostanay`,
+		`Asia/Qyzylorda`,
+		`Asia/Rangoon`,
+		`Asia/Riyadh`,
+		`Asia/Saigon`,
+		`Asia/Sakhalin`,
+		`Asia/Samarkand`,
+		`Asia/Seoul`,
+		`Asia/Shanghai`,
+		`Asia/Singapore`,
+		`Asia/Srednekolymsk`,
+		`Asia/Taipei`,
+		`Asia/Tashkent`,
+		`Asia/Tbilisi`,
+		`Asia/Tehran`,
+		`Asia/Tel_Aviv`,
+		`Asia/Thimbu`,
+		`Asia/Thimphu`,
+		`Asia/Tokyo`,
+		`Asia/Tomsk`,
+		`Asia/Ujung_Pandang`,
+		`Asia/Ulaanbaatar`,
+		`Asia/Ulan_Bator`,
+		`Asia/Urumqi`,
+		`Asia/Ust-Nera`,
+		`Asia/Vientiane`,
+		`Asia/Vladivostok`,
+		`Asia/Yakutsk`,
+		`Asia/Yangon`,
+		`Asia/Yekaterinburg`,
+		`Asia/Yerevan`,
+		`Atlantic/Azores`,
+		`Atlantic/Bermuda`,
+		`Atlantic/Canary`,
+		`Atlantic/Cape_Verde`,
+		`Atlantic/Faeroe`,
+		`Atlantic/Faroe`,
+		`Atlantic/Jan_Mayen`,
+		`Atlantic/Madeira`,
+		`Atlantic/Reykjavik`,
+		`Atlantic/South_Georgia`,
+		`Atlantic/St_Helena`,
+		`Atlantic/Stanley`,
+		`Australia/ACT`,
+		`Australia/Adelaide`,
+		`Australia/Brisbane`,
+		`Australia/Broken_Hill`,
+		`Australia/Canberra`,
+		`Australia/Currie`,
+		`Australia/Darwin`,
+		`Australia/Eucla`,
+		`Australia/Hobart`,
+		`Australia/LHI`,
+		`Australia/Lindeman`,
+		`Australia/Lord_Howe`,
+		`Australia/Melbourne`,
+		`Australia/North`,
+		`Australia/NSW`,
+		`Australia/Perth`,
+		`Australia/Queensland`,
+		`Australia/South`,
+		`Australia/Sydney`,
+		`Australia/Tasmania`,
+		`Australia/Victoria`,
+		`Australia/West`,
+		`Australia/Yancowinna`,
+		`Brazil/Acre`,
+		`Brazil/DeNoronha`,
+		`Brazil/East`,
+		`Brazil/West`,
+		`Canada/Atlantic`,
+		`Canada/Central`,
+		`Canada/Eastern`,
+		`Canada/Mountain`,
+		`Canada/Newfoundland`,
+		`Canada/Pacific`,
+		`Canada/Saskatchewan`,
+		`Canada/Yukon`,
+		`CET`,
+		`Chile/Continental`,
+		`Chile/EasterIsland`,
+		`CST6CDT`,
+		`Cuba`,
+		`EET`,
+		`Egypt`,
+		`Eire`,
+		`EST`,
+		`EST5EDT`,
+		`Etc/GMT`,
+		`Etc/GMT+0`,
+		`Etc/GMT+1`,
+		`Etc/GMT+10`,
+		`Etc/GMT+11`,
+		`Etc/GMT+12`,
+		`Etc/GMT+2`,
+		`Etc/GMT+3`,
+		`Etc/GMT+4`,
+		`Etc/GMT+5`,
+		`Etc/GMT+6`,
+		`Etc/GMT+7`,
+		`Etc/GMT+8`,
+		`Etc/GMT+9`,
+		`Etc/GMT-0`,
+		`Etc/GMT-1`,
+		`Etc/GMT-10`,
+		`Etc/GMT-11`,
+		`Etc/GMT-12`,
+		`Etc/GMT-13`,
+		`Etc/GMT-14`,
+		`Etc/GMT-2`,
+		`Etc/GMT-3`,
+		`Etc/GMT-4`,
+		`Etc/GMT-5`,
+		`Etc/GMT-6`,
+		`Etc/GMT-7`,
+		`Etc/GMT-8`,
+		`Etc/GMT-9`,
+		`Etc/GMT0`,
+		`Etc/Greenwich`,
+		`Etc/UCT`,
+		`Etc/Universal`,
+		`Etc/UTC`,
+		`Etc/Zulu`,
+		`Europe/Amsterdam`,
+		`Europe/Andorra`,
+		`Europe/Astrakhan`,
+		`Europe/Athens`,
+		`Europe/Belfast`,
+		`Europe/Belgrade`,
+		`Europe/Berlin`,
+		`Europe/Bratislava`,
+		`Europe/Brussels`,
+		`Europe/Bucharest`,
+		`Europe/Budapest`,
+		`Europe/Busingen`,
+		`Europe/Chisinau`,
+		`Europe/Copenhagen`,
+		`Europe/Dublin`,
+		`Europe/Gibraltar`,
+		`Europe/Guernsey`,
+		`Europe/Helsinki`,
+		`Europe/Isle_of_Man`,
+		`Europe/Istanbul`,
+		`Europe/Jersey`,
+		`Europe/Kaliningrad`,
+		`Europe/Kiev`,
+		`Europe/Kirov`,
+		`Europe/Lisbon`,
+		`Europe/Ljubljana`,
+		`Europe/London`,
+		`Europe/Luxembourg`,
+		`Europe/Madrid`,
+		`Europe/Malta`,
+		`Europe/Mariehamn`,
+		`Europe/Minsk`,
+		`Europe/Monaco`,
+		`Europe/Moscow`,
+		`Europe/Nicosia`,
+		`Europe/Oslo`,
+		`Europe/Paris`,
+		`Europe/Podgorica`,
+		`Europe/Prague`,
+		`Europe/Riga`,
+		`Europe/Rome`,
+		`Europe/Samara`,
+		`Europe/San_Marino`,
+		`Europe/Sarajevo`,
+		`Europe/Saratov`,
+		`Europe/Simferopol`,
+		`Europe/Skopje`,
+		`Europe/Sofia`,
+		`Europe/Stockholm`,
+		`Europe/Tallinn`,
+		`Europe/Tirane`,
+		`Europe/Tiraspol`,
+		`Europe/Ulyanovsk`,
+		`Europe/Uzhgorod`,
+		`Europe/Vaduz`,
+		`Europe/Vatican`,
+		`Europe/Vienna`,
+		`Europe/Vilnius`,
+		`Europe/Volgograd`,
+		`Europe/Warsaw`,
+		`Europe/Zagreb`,
+		`Europe/Zaporozhye`,
+		`Europe/Zurich`,
+		`Factory`,
+		`GB`,
+		`GB-Eire`,
+		`GMT`,
+		`GMT+0`,
+		`GMT-0`,
+		`GMT0`,
+		`Greenwich`,
+		`Hongkong`,
+		`HST`,
+		`Iceland`,
+		`Indian/Antananarivo`,
+		`Indian/Chagos`,
+		`Indian/Christmas`,
+		`Indian/Cocos`,
+		`Indian/Comoro`,
+		`Indian/Kerguelen`,
+		`Indian/Mahe`,
+		`Indian/Maldives`,
+		`Indian/Mauritius`,
+		`Indian/Mayotte`,
+		`Indian/Reunion`,
+		`Iran`,
+		`Israel`,
+		`Jamaica`,
+		`Japan`,
+		`Kwajalein`,
+		`Libya`,
+		`MET`,
+		`Mexico/BajaNorte`,
+		`Mexico/BajaSur`,
+		`Mexico/General`,
+		`MST`,
+		`MST7MDT`,
+		`Navajo`,
+		`NZ`,
+		`NZ-CHAT`,
+		`Pacific/Apia`,
+		`Pacific/Auckland`,
+		`Pacific/Bougainville`,
+		`Pacific/Chatham`,
+		`Pacific/Chuuk`,
+		`Pacific/Easter`,
+		`Pacific/Efate`,
+		`Pacific/Enderbury`,
+		`Pacific/Fakaofo`,
+		`Pacific/Fiji`,
+		`Pacific/Funafuti`,
+		`Pacific/Galapagos`,
+		`Pacific/Gambier`,
+		`Pacific/Guadalcanal`,
+		`Pacific/Guam`,
+		`Pacific/Honolulu`,
+		`Pacific/Johnston`,
+		`Pacific/Kanton`,
+		`Pacific/Kiritimati`,
+		`Pacific/Kosrae`,
+		`Pacific/Kwajalein`,
+		`Pacific/Majuro`,
+		`Pacific/Marquesas`,
+		`Pacific/Midway`,
+		`Pacific/Nauru`,
+		`Pacific/Niue`,
+		`Pacific/Norfolk`,
+		`Pacific/Noumea`,
+		`Pacific/Pago_Pago`,
+		`Pacific/Palau`,
+		`Pacific/Pitcairn`,
+		`Pacific/Pohnpei`,
+		`Pacific/Ponape`,
+		`Pacific/Port_Moresby`,
+		`Pacific/Rarotonga`,
+		`Pacific/Saipan`,
+		`Pacific/Samoa`,
+		`Pacific/Tahiti`,
+		`Pacific/Tarawa`,
+		`Pacific/Tongatapu`,
+		`Pacific/Truk`,
+		`Pacific/Wake`,
+		`Pacific/Wallis`,
+		`Pacific/Yap`,
+		`Poland`,
+		`Portugal`,
+		`PRC`,
+		`PST8PDT`,
+		`ROC`,
+		`ROK`,
+		`Singapore`,
+		`Turkey`,
+		`UCT`,
+		`Universal`,
+		`US/Alaska`,
+		`US/Aleutian`,
+		`US/Arizona`,
+		`US/Central`,
+		`US/East-Indiana`,
+		`US/Eastern`,
+		`US/Hawaii`,
+		`US/Indiana-Starke`,
+		`US/Michigan`,
+		`US/Mountain`,
+		`US/Pacific`,
+		`US/Samoa`,
+		`UTC`,
+		`W-SU`,
+		`WET`,
+		`Zulu`,
+	}
+	for _, tz := range data {
+		errs := validateTimeZone(&tz, nil)
+		if len(errs) > 0 {
+			t.Errorf("%s failed: %v", tz, errs)
+		}
+	}
+}