<?php
/**
 * This class stands for XTimeZone EnumType
 * @subpackage Enumerations
 */
class XTimeZone
{
    /**
     * Constant for value 'Africa/Abidjan'
     * @return string 'Africa/Abidjan'
     */
    const VALUE_AFRICA_ABIDJAN = 'Africa/Abidjan';
    /**
     * Constant for value 'Africa/Accra'
     * @return string 'Africa/Accra'
     */
    const VALUE_AFRICA_ACCRA = 'Africa/Accra';
    /**
     * Constant for value 'Africa/Addis_Ababa'
     * @return string 'Africa/Addis_Ababa'
     */
    const VALUE_AFRICA_ADDIS_ABABA = 'Africa/Addis_Ababa';
    /**
     * Constant for value 'Africa/Algiers'
     * @return string 'Africa/Algiers'
     */
    const VALUE_AFRICA_ALGIERS = 'Africa/Algiers';
    /**
     * Constant for value 'Africa/Asmara'
     * @return string 'Africa/Asmara'
     */
    const VALUE_AFRICA_ASMARA = 'Africa/Asmara';
    /**
     * Constant for value 'Africa/Bamako'
     * @return string 'Africa/Bamako'
     */
    const VALUE_AFRICA_BAMAKO = 'Africa/Bamako';
    /**
     * Constant for value 'Africa/Bangui'
     * @return string 'Africa/Bangui'
     */
    const VALUE_AFRICA_BANGUI = 'Africa/Bangui';
    /**
     * Constant for value 'Africa/Banjul'
     * @return string 'Africa/Banjul'
     */
    const VALUE_AFRICA_BANJUL = 'Africa/Banjul';
    /**
     * Constant for value 'Africa/Bissau'
     * @return string 'Africa/Bissau'
     */
    const VALUE_AFRICA_BISSAU = 'Africa/Bissau';
    /**
     * Constant for value 'Africa/Blantyre'
     * @return string 'Africa/Blantyre'
     */
    const VALUE_AFRICA_BLANTYRE = 'Africa/Blantyre';
    /**
     * Constant for value 'Africa/Brazzaville'
     * @return string 'Africa/Brazzaville'
     */
    const VALUE_AFRICA_BRAZZAVILLE = 'Africa/Brazzaville';
    /**
     * Constant for value 'Africa/Bujumbura'
     * @return string 'Africa/Bujumbura'
     */
    const VALUE_AFRICA_BUJUMBURA = 'Africa/Bujumbura';
    /**
     * Constant for value 'Africa/Cairo'
     * @return string 'Africa/Cairo'
     */
    const VALUE_AFRICA_CAIRO = 'Africa/Cairo';
    /**
     * Constant for value 'Africa/Casablanca'
     * @return string 'Africa/Casablanca'
     */
    const VALUE_AFRICA_CASABLANCA = 'Africa/Casablanca';
    /**
     * Constant for value 'Africa/Ceuta'
     * @return string 'Africa/Ceuta'
     */
    const VALUE_AFRICA_CEUTA = 'Africa/Ceuta';
    /**
     * Constant for value 'Africa/Conakry'
     * @return string 'Africa/Conakry'
     */
    const VALUE_AFRICA_CONAKRY = 'Africa/Conakry';
    /**
     * Constant for value 'Africa/Dakar'
     * @return string 'Africa/Dakar'
     */
    const VALUE_AFRICA_DAKAR = 'Africa/Dakar';
    /**
     * Constant for value 'Africa/Dar_es_Salaam'
     * @return string 'Africa/Dar_es_Salaam'
     */
    const VALUE_AFRICA_DAR_ES_SALAAM = 'Africa/Dar_es_Salaam';
    /**
     * Constant for value 'Africa/Djibouti'
     * @return string 'Africa/Djibouti'
     */
    const VALUE_AFRICA_DJIBOUTI = 'Africa/Djibouti';
    /**
     * Constant for value 'Africa/Douala'
     * @return string 'Africa/Douala'
     */
    const VALUE_AFRICA_DOUALA = 'Africa/Douala';
    /**
     * Constant for value 'Africa/El_Aaiun'
     * @return string 'Africa/El_Aaiun'
     */
    const VALUE_AFRICA_EL_AAIUN = 'Africa/El_Aaiun';
    /**
     * Constant for value 'Africa/Freetown'
     * @return string 'Africa/Freetown'
     */
    const VALUE_AFRICA_FREETOWN = 'Africa/Freetown';
    /**
     * Constant for value 'Africa/Gaborone'
     * @return string 'Africa/Gaborone'
     */
    const VALUE_AFRICA_GABORONE = 'Africa/Gaborone';
    /**
     * Constant for value 'Africa/Harare'
     * @return string 'Africa/Harare'
     */
    const VALUE_AFRICA_HARARE = 'Africa/Harare';
    /**
     * Constant for value 'Africa/Johannesburg'
     * @return string 'Africa/Johannesburg'
     */
    const VALUE_AFRICA_JOHANNESBURG = 'Africa/Johannesburg';
    /**
     * Constant for value 'Africa/Kampala'
     * @return string 'Africa/Kampala'
     */
    const VALUE_AFRICA_KAMPALA = 'Africa/Kampala';
    /**
     * Constant for value 'Africa/Khartoum'
     * @return string 'Africa/Khartoum'
     */
    const VALUE_AFRICA_KHARTOUM = 'Africa/Khartoum';
    /**
     * Constant for value 'Africa/Kigali'
     * @return string 'Africa/Kigali'
     */
    const VALUE_AFRICA_KIGALI = 'Africa/Kigali';
    /**
     * Constant for value 'Africa/Kinshasa'
     * @return string 'Africa/Kinshasa'
     */
    const VALUE_AFRICA_KINSHASA = 'Africa/Kinshasa';
    /**
     * Constant for value 'Africa/Lagos'
     * @return string 'Africa/Lagos'
     */
    const VALUE_AFRICA_LAGOS = 'Africa/Lagos';
    /**
     * Constant for value 'Africa/Libreville'
     * @return string 'Africa/Libreville'
     */
    const VALUE_AFRICA_LIBREVILLE = 'Africa/Libreville';
    /**
     * Constant for value 'Africa/Lome'
     * @return string 'Africa/Lome'
     */
    const VALUE_AFRICA_LOME = 'Africa/Lome';
    /**
     * Constant for value 'Africa/Luanda'
     * @return string 'Africa/Luanda'
     */
    const VALUE_AFRICA_LUANDA = 'Africa/Luanda';
    /**
     * Constant for value 'Africa/Lubumbashi'
     * @return string 'Africa/Lubumbashi'
     */
    const VALUE_AFRICA_LUBUMBASHI = 'Africa/Lubumbashi';
    /**
     * Constant for value 'Africa/Lusaka'
     * @return string 'Africa/Lusaka'
     */
    const VALUE_AFRICA_LUSAKA = 'Africa/Lusaka';
    /**
     * Constant for value 'Africa/Malabo'
     * @return string 'Africa/Malabo'
     */
    const VALUE_AFRICA_MALABO = 'Africa/Malabo';
    /**
     * Constant for value 'Africa/Maputo'
     * @return string 'Africa/Maputo'
     */
    const VALUE_AFRICA_MAPUTO = 'Africa/Maputo';
    /**
     * Constant for value 'Africa/Maseru'
     * @return string 'Africa/Maseru'
     */
    const VALUE_AFRICA_MASERU = 'Africa/Maseru';
    /**
     * Constant for value 'Africa/Mbabane'
     * @return string 'Africa/Mbabane'
     */
    const VALUE_AFRICA_MBABANE = 'Africa/Mbabane';
    /**
     * Constant for value 'Africa/Mogadishu'
     * @return string 'Africa/Mogadishu'
     */
    const VALUE_AFRICA_MOGADISHU = 'Africa/Mogadishu';
    /**
     * Constant for value 'Africa/Monrovia'
     * @return string 'Africa/Monrovia'
     */
    const VALUE_AFRICA_MONROVIA = 'Africa/Monrovia';
    /**
     * Constant for value 'Africa/Nairobi'
     * @return string 'Africa/Nairobi'
     */
    const VALUE_AFRICA_NAIROBI = 'Africa/Nairobi';
    /**
     * Constant for value 'Africa/Ndjamena'
     * @return string 'Africa/Ndjamena'
     */
    const VALUE_AFRICA_NDJAMENA = 'Africa/Ndjamena';
    /**
     * Constant for value 'Africa/Niamey'
     * @return string 'Africa/Niamey'
     */
    const VALUE_AFRICA_NIAMEY = 'Africa/Niamey';
    /**
     * Constant for value 'Africa/Nouakchott'
     * @return string 'Africa/Nouakchott'
     */
    const VALUE_AFRICA_NOUAKCHOTT = 'Africa/Nouakchott';
    /**
     * Constant for value 'Africa/Ouagadougou'
     * @return string 'Africa/Ouagadougou'
     */
    const VALUE_AFRICA_OUAGADOUGOU = 'Africa/Ouagadougou';
    /**
     * Constant for value 'Africa/Porto-Novo'
     * @return string 'Africa/Porto-Novo'
     */
    const VALUE_AFRICA_PORTO_NOVO = 'Africa/Porto-Novo';
    /**
     * Constant for value 'Africa/Sao_Tome'
     * @return string 'Africa/Sao_Tome'
     */
    const VALUE_AFRICA_SAO_TOME = 'Africa/Sao_Tome';
    /**
     * Constant for value 'Africa/Tripoli'
     * @return string 'Africa/Tripoli'
     */
    const VALUE_AFRICA_TRIPOLI = 'Africa/Tripoli';
    /**
     * Constant for value 'Africa/Tunis'
     * @return string 'Africa/Tunis'
     */
    const VALUE_AFRICA_TUNIS = 'Africa/Tunis';
    /**
     * Constant for value 'Africa/Windhoek'
     * @return string 'Africa/Windhoek'
     */
    const VALUE_AFRICA_WINDHOEK = 'Africa/Windhoek';
    /**
     * Constant for value 'America/Adak'
     * @return string 'America/Adak'
     */
    const VALUE_AMERICA_ADAK = 'America/Adak';
    /**
     * Constant for value 'America/Anchorage'
     * @return string 'America/Anchorage'
     */
    const VALUE_AMERICA_ANCHORAGE = 'America/Anchorage';
    /**
     * Constant for value 'America/Anguilla'
     * @return string 'America/Anguilla'
     */
    const VALUE_AMERICA_ANGUILLA = 'America/Anguilla';
    /**
     * Constant for value 'America/Antigua'
     * @return string 'America/Antigua'
     */
    const VALUE_AMERICA_ANTIGUA = 'America/Antigua';
    /**
     * Constant for value 'America/Araguaina'
     * @return string 'America/Araguaina'
     */
    const VALUE_AMERICA_ARAGUAINA = 'America/Araguaina';
    /**
     * Constant for value 'America/Argentina/Buenos_Aires'
     * @return string 'America/Argentina/Buenos_Aires'
     */
    const VALUE_AMERICA_ARGENTINA_BUENOS_AIRES = 'America/Argentina/Buenos_Aires';
    /**
     * Constant for value 'America/Argentina/Catamarca'
     * @return string 'America/Argentina/Catamarca'
     */
    const VALUE_AMERICA_ARGENTINA_CATAMARCA = 'America/Argentina/Catamarca';
    /**
     * Constant for value 'America/Argentina/Cordoba'
     * @return string 'America/Argentina/Cordoba'
     */
    const VALUE_AMERICA_ARGENTINA_CORDOBA = 'America/Argentina/Cordoba';
    /**
     * Constant for value 'America/Argentina/Jujuy'
     * @return string 'America/Argentina/Jujuy'
     */
    const VALUE_AMERICA_ARGENTINA_JUJUY = 'America/Argentina/Jujuy';
    /**
     * Constant for value 'America/Argentina/La_Rioja'
     * @return string 'America/Argentina/La_Rioja'
     */
    const VALUE_AMERICA_ARGENTINA_LA_RIOJA = 'America/Argentina/La_Rioja';
    /**
     * Constant for value 'America/Argentina/Mendoza'
     * @return string 'America/Argentina/Mendoza'
     */
    const VALUE_AMERICA_ARGENTINA_MENDOZA = 'America/Argentina/Mendoza';
    /**
     * Constant for value 'America/Argentina/Rio_Gallegos'
     * @return string 'America/Argentina/Rio_Gallegos'
     */
    const VALUE_AMERICA_ARGENTINA_RIO_GALLEGOS = 'America/Argentina/Rio_Gallegos';
    /**
     * Constant for value 'America/Argentina/Salta'
     * @return string 'America/Argentina/Salta'
     */
    const VALUE_AMERICA_ARGENTINA_SALTA = 'America/Argentina/Salta';
    /**
     * Constant for value 'America/Argentina/San_Juan'
     * @return string 'America/Argentina/San_Juan'
     */
    const VALUE_AMERICA_ARGENTINA_SAN_JUAN = 'America/Argentina/San_Juan';
    /**
     * Constant for value 'America/Argentina/San_Luis'
     * @return string 'America/Argentina/San_Luis'
     */
    const VALUE_AMERICA_ARGENTINA_SAN_LUIS = 'America/Argentina/San_Luis';
    /**
     * Constant for value 'America/Argentina/Tucuman'
     * @return string 'America/Argentina/Tucuman'
     */
    const VALUE_AMERICA_ARGENTINA_TUCUMAN = 'America/Argentina/Tucuman';
    /**
     * Constant for value 'America/Argentina/Ushuaia'
     * @return string 'America/Argentina/Ushuaia'
     */
    const VALUE_AMERICA_ARGENTINA_USHUAIA = 'America/Argentina/Ushuaia';
    /**
     * Constant for value 'America/Aruba'
     * @return string 'America/Aruba'
     */
    const VALUE_AMERICA_ARUBA = 'America/Aruba';
    /**
     * Constant for value 'America/Asuncion'
     * @return string 'America/Asuncion'
     */
    const VALUE_AMERICA_ASUNCION = 'America/Asuncion';
    /**
     * Constant for value 'America/Atikokan'
     * @return string 'America/Atikokan'
     */
    const VALUE_AMERICA_ATIKOKAN = 'America/Atikokan';
    /**
     * Constant for value 'America/Bahia'
     * @return string 'America/Bahia'
     */
    const VALUE_AMERICA_BAHIA = 'America/Bahia';
    /**
     * Constant for value 'America/Barbados'
     * @return string 'America/Barbados'
     */
    const VALUE_AMERICA_BARBADOS = 'America/Barbados';
    /**
     * Constant for value 'America/Belem'
     * @return string 'America/Belem'
     */
    const VALUE_AMERICA_BELEM = 'America/Belem';
    /**
     * Constant for value 'America/Belize'
     * @return string 'America/Belize'
     */
    const VALUE_AMERICA_BELIZE = 'America/Belize';
    /**
     * Constant for value 'America/Blanc-Sablon'
     * @return string 'America/Blanc-Sablon'
     */
    const VALUE_AMERICA_BLANC_SABLON = 'America/Blanc-Sablon';
    /**
     * Constant for value 'America/Boa_Vista'
     * @return string 'America/Boa_Vista'
     */
    const VALUE_AMERICA_BOA_VISTA = 'America/Boa_Vista';
    /**
     * Constant for value 'America/Bogota'
     * @return string 'America/Bogota'
     */
    const VALUE_AMERICA_BOGOTA = 'America/Bogota';
    /**
     * Constant for value 'America/Boise'
     * @return string 'America/Boise'
     */
    const VALUE_AMERICA_BOISE = 'America/Boise';
    /**
     * Constant for value 'America/Cambridge_Bay'
     * @return string 'America/Cambridge_Bay'
     */
    const VALUE_AMERICA_CAMBRIDGE_BAY = 'America/Cambridge_Bay';
    /**
     * Constant for value 'America/Campo_Grande'
     * @return string 'America/Campo_Grande'
     */
    const VALUE_AMERICA_CAMPO_GRANDE = 'America/Campo_Grande';
    /**
     * Constant for value 'America/Cancun'
     * @return string 'America/Cancun'
     */
    const VALUE_AMERICA_CANCUN = 'America/Cancun';
    /**
     * Constant for value 'America/Caracas'
     * @return string 'America/Caracas'
     */
    const VALUE_AMERICA_CARACAS = 'America/Caracas';
    /**
     * Constant for value 'America/Cayenne'
     * @return string 'America/Cayenne'
     */
    const VALUE_AMERICA_CAYENNE = 'America/Cayenne';
    /**
     * Constant for value 'America/Cayman'
     * @return string 'America/Cayman'
     */
    const VALUE_AMERICA_CAYMAN = 'America/Cayman';
    /**
     * Constant for value 'America/Chicago'
     * @return string 'America/Chicago'
     */
    const VALUE_AMERICA_CHICAGO = 'America/Chicago';
    /**
     * Constant for value 'America/Chihuahua'
     * @return string 'America/Chihuahua'
     */
    const VALUE_AMERICA_CHIHUAHUA = 'America/Chihuahua';
    /**
     * Constant for value 'America/Costa_Rica'
     * @return string 'America/Costa_Rica'
     */
    const VALUE_AMERICA_COSTA_RICA = 'America/Costa_Rica';
    /**
     * Constant for value 'America/Cuiaba'
     * @return string 'America/Cuiaba'
     */
    const VALUE_AMERICA_CUIABA = 'America/Cuiaba';
    /**
     * Constant for value 'America/Curacao'
     * @return string 'America/Curacao'
     */
    const VALUE_AMERICA_CURACAO = 'America/Curacao';
    /**
     * Constant for value 'America/Danmarkshavn'
     * @return string 'America/Danmarkshavn'
     */
    const VALUE_AMERICA_DANMARKSHAVN = 'America/Danmarkshavn';
    /**
     * Constant for value 'America/Dawson'
     * @return string 'America/Dawson'
     */
    const VALUE_AMERICA_DAWSON = 'America/Dawson';
    /**
     * Constant for value 'America/Dawson_Creek'
     * @return string 'America/Dawson_Creek'
     */
    const VALUE_AMERICA_DAWSON_CREEK = 'America/Dawson_Creek';
    /**
     * Constant for value 'America/Denver'
     * @return string 'America/Denver'
     */
    const VALUE_AMERICA_DENVER = 'America/Denver';
    /**
     * Constant for value 'America/Detroit'
     * @return string 'America/Detroit'
     */
    const VALUE_AMERICA_DETROIT = 'America/Detroit';
    /**
     * Constant for value 'America/Dominica'
     * @return string 'America/Dominica'
     */
    const VALUE_AMERICA_DOMINICA = 'America/Dominica';
    /**
     * Constant for value 'America/Edmonton'
     * @return string 'America/Edmonton'
     */
    const VALUE_AMERICA_EDMONTON = 'America/Edmonton';
    /**
     * Constant for value 'America/Eirunepe'
     * @return string 'America/Eirunepe'
     */
    const VALUE_AMERICA_EIRUNEPE = 'America/Eirunepe';
    /**
     * Constant for value 'America/El_Salvador'
     * @return string 'America/El_Salvador'
     */
    const VALUE_AMERICA_EL_SALVADOR = 'America/El_Salvador';
    /**
     * Constant for value 'America/Fortaleza'
     * @return string 'America/Fortaleza'
     */
    const VALUE_AMERICA_FORTALEZA = 'America/Fortaleza';
    /**
     * Constant for value 'America/Glace_Bay'
     * @return string 'America/Glace_Bay'
     */
    const VALUE_AMERICA_GLACE_BAY = 'America/Glace_Bay';
    /**
     * Constant for value 'America/Godthab'
     * @return string 'America/Godthab'
     */
    const VALUE_AMERICA_GODTHAB = 'America/Godthab';
    /**
     * Constant for value 'America/Goose_Bay'
     * @return string 'America/Goose_Bay'
     */
    const VALUE_AMERICA_GOOSE_BAY = 'America/Goose_Bay';
    /**
     * Constant for value 'America/Grand_Turk'
     * @return string 'America/Grand_Turk'
     */
    const VALUE_AMERICA_GRAND_TURK = 'America/Grand_Turk';
    /**
     * Constant for value 'America/Grenada'
     * @return string 'America/Grenada'
     */
    const VALUE_AMERICA_GRENADA = 'America/Grenada';
    /**
     * Constant for value 'America/Guadeloupe'
     * @return string 'America/Guadeloupe'
     */
    const VALUE_AMERICA_GUADELOUPE = 'America/Guadeloupe';
    /**
     * Constant for value 'America/Guatemala'
     * @return string 'America/Guatemala'
     */
    const VALUE_AMERICA_GUATEMALA = 'America/Guatemala';
    /**
     * Constant for value 'America/Guayaquil'
     * @return string 'America/Guayaquil'
     */
    const VALUE_AMERICA_GUAYAQUIL = 'America/Guayaquil';
    /**
     * Constant for value 'America/Guyana'
     * @return string 'America/Guyana'
     */
    const VALUE_AMERICA_GUYANA = 'America/Guyana';
    /**
     * Constant for value 'America/Halifax'
     * @return string 'America/Halifax'
     */
    const VALUE_AMERICA_HALIFAX = 'America/Halifax';
    /**
     * Constant for value 'America/Havana'
     * @return string 'America/Havana'
     */
    const VALUE_AMERICA_HAVANA = 'America/Havana';
    /**
     * Constant for value 'America/Hermosillo'
     * @return string 'America/Hermosillo'
     */
    const VALUE_AMERICA_HERMOSILLO = 'America/Hermosillo';
    /**
     * Constant for value 'America/Indiana/Indianapolis'
     * @return string 'America/Indiana/Indianapolis'
     */
    const VALUE_AMERICA_INDIANA_INDIANAPOLIS = 'America/Indiana/Indianapolis';
    /**
     * Constant for value 'America/Indiana/Knox'
     * @return string 'America/Indiana/Knox'
     */
    const VALUE_AMERICA_INDIANA_KNOX = 'America/Indiana/Knox';
    /**
     * Constant for value 'America/Indiana/Marengo'
     * @return string 'America/Indiana/Marengo'
     */
    const VALUE_AMERICA_INDIANA_MARENGO = 'America/Indiana/Marengo';
    /**
     * Constant for value 'America/Indiana/Petersburg'
     * @return string 'America/Indiana/Petersburg'
     */
    const VALUE_AMERICA_INDIANA_PETERSBURG = 'America/Indiana/Petersburg';
    /**
     * Constant for value 'America/Indiana/Tell_City'
     * @return string 'America/Indiana/Tell_City'
     */
    const VALUE_AMERICA_INDIANA_TELL_CITY = 'America/Indiana/Tell_City';
    /**
     * Constant for value 'America/Indiana/Vevay'
     * @return string 'America/Indiana/Vevay'
     */
    const VALUE_AMERICA_INDIANA_VEVAY = 'America/Indiana/Vevay';
    /**
     * Constant for value 'America/Indiana/Vincennes'
     * @return string 'America/Indiana/Vincennes'
     */
    const VALUE_AMERICA_INDIANA_VINCENNES = 'America/Indiana/Vincennes';
    /**
     * Constant for value 'America/Indiana/Winamac'
     * @return string 'America/Indiana/Winamac'
     */
    const VALUE_AMERICA_INDIANA_WINAMAC = 'America/Indiana/Winamac';
    /**
     * Constant for value 'America/Inuvik'
     * @return string 'America/Inuvik'
     */
    const VALUE_AMERICA_INUVIK = 'America/Inuvik';
    /**
     * Constant for value 'America/Iqaluit'
     * @return string 'America/Iqaluit'
     */
    const VALUE_AMERICA_IQALUIT = 'America/Iqaluit';
    /**
     * Constant for value 'America/Jamaica'
     * @return string 'America/Jamaica'
     */
    const VALUE_AMERICA_JAMAICA = 'America/Jamaica';
    /**
     * Constant for value 'America/Juneau'
     * @return string 'America/Juneau'
     */
    const VALUE_AMERICA_JUNEAU = 'America/Juneau';
    /**
     * Constant for value 'America/Kentucky/Louisville'
     * @return string 'America/Kentucky/Louisville'
     */
    const VALUE_AMERICA_KENTUCKY_LOUISVILLE = 'America/Kentucky/Louisville';
    /**
     * Constant for value 'America/Kentucky/Monticello'
     * @return string 'America/Kentucky/Monticello'
     */
    const VALUE_AMERICA_KENTUCKY_MONTICELLO = 'America/Kentucky/Monticello';
    /**
     * Constant for value 'America/La_Paz'
     * @return string 'America/La_Paz'
     */
    const VALUE_AMERICA_LA_PAZ = 'America/La_Paz';
    /**
     * Constant for value 'America/Lima'
     * @return string 'America/Lima'
     */
    const VALUE_AMERICA_LIMA = 'America/Lima';
    /**
     * Constant for value 'America/Los_Angeles'
     * @return string 'America/Los_Angeles'
     */
    const VALUE_AMERICA_LOS_ANGELES = 'America/Los_Angeles';
    /**
     * Constant for value 'America/Maceio'
     * @return string 'America/Maceio'
     */
    const VALUE_AMERICA_MACEIO = 'America/Maceio';
    /**
     * Constant for value 'America/Managua'
     * @return string 'America/Managua'
     */
    const VALUE_AMERICA_MANAGUA = 'America/Managua';
    /**
     * Constant for value 'America/Manaus'
     * @return string 'America/Manaus'
     */
    const VALUE_AMERICA_MANAUS = 'America/Manaus';
    /**
     * Constant for value 'America/Marigot'
     * @return string 'America/Marigot'
     */
    const VALUE_AMERICA_MARIGOT = 'America/Marigot';
    /**
     * Constant for value 'America/Martinique'
     * @return string 'America/Martinique'
     */
    const VALUE_AMERICA_MARTINIQUE = 'America/Martinique';
    /**
     * Constant for value 'America/Mazatlan'
     * @return string 'America/Mazatlan'
     */
    const VALUE_AMERICA_MAZATLAN = 'America/Mazatlan';
    /**
     * Constant for value 'America/Menominee'
     * @return string 'America/Menominee'
     */
    const VALUE_AMERICA_MENOMINEE = 'America/Menominee';
    /**
     * Constant for value 'America/Merida'
     * @return string 'America/Merida'
     */
    const VALUE_AMERICA_MERIDA = 'America/Merida';
    /**
     * Constant for value 'America/Mexico_City'
     * @return string 'America/Mexico_City'
     */
    const VALUE_AMERICA_MEXICO_CITY = 'America/Mexico_City';
    /**
     * Constant for value 'America/Miquelon'
     * @return string 'America/Miquelon'
     */
    const VALUE_AMERICA_MIQUELON = 'America/Miquelon';
    /**
     * Constant for value 'America/Moncton'
     * @return string 'America/Moncton'
     */
    const VALUE_AMERICA_MONCTON = 'America/Moncton';
    /**
     * Constant for value 'America/Monterrey'
     * @return string 'America/Monterrey'
     */
    const VALUE_AMERICA_MONTERREY = 'America/Monterrey';
    /**
     * Constant for value 'America/Montevideo'
     * @return string 'America/Montevideo'
     */
    const VALUE_AMERICA_MONTEVIDEO = 'America/Montevideo';
    /**
     * Constant for value 'America/Montreal'
     * @return string 'America/Montreal'
     */
    const VALUE_AMERICA_MONTREAL = 'America/Montreal';
    /**
     * Constant for value 'America/Montserrat'
     * @return string 'America/Montserrat'
     */
    const VALUE_AMERICA_MONTSERRAT = 'America/Montserrat';
    /**
     * Constant for value 'America/Nassau'
     * @return string 'America/Nassau'
     */
    const VALUE_AMERICA_NASSAU = 'America/Nassau';
    /**
     * Constant for value 'America/New_York'
     * @return string 'America/New_York'
     */
    const VALUE_AMERICA_NEW_YORK = 'America/New_York';
    /**
     * Constant for value 'America/Nipigon'
     * @return string 'America/Nipigon'
     */
    const VALUE_AMERICA_NIPIGON = 'America/Nipigon';
    /**
     * Constant for value 'America/Nome'
     * @return string 'America/Nome'
     */
    const VALUE_AMERICA_NOME = 'America/Nome';
    /**
     * Constant for value 'America/Noronha'
     * @return string 'America/Noronha'
     */
    const VALUE_AMERICA_NORONHA = 'America/Noronha';
    /**
     * Constant for value 'America/North_Dakota/Center'
     * @return string 'America/North_Dakota/Center'
     */
    const VALUE_AMERICA_NORTH_DAKOTA_CENTER = 'America/North_Dakota/Center';
    /**
     * Constant for value 'America/North_Dakota/New_Salem'
     * @return string 'America/North_Dakota/New_Salem'
     */
    const VALUE_AMERICA_NORTH_DAKOTA_NEW_SALEM = 'America/North_Dakota/New_Salem';
    /**
     * Constant for value 'America/Panama'
     * @return string 'America/Panama'
     */
    const VALUE_AMERICA_PANAMA = 'America/Panama';
    /**
     * Constant for value 'America/Pangnirtung'
     * @return string 'America/Pangnirtung'
     */
    const VALUE_AMERICA_PANGNIRTUNG = 'America/Pangnirtung';
    /**
     * Constant for value 'America/Paramaribo'
     * @return string 'America/Paramaribo'
     */
    const VALUE_AMERICA_PARAMARIBO = 'America/Paramaribo';
    /**
     * Constant for value 'America/Phoenix'
     * @return string 'America/Phoenix'
     */
    const VALUE_AMERICA_PHOENIX = 'America/Phoenix';
    /**
     * Constant for value 'America/Port-au-Prince'
     * @return string 'America/Port-au-Prince'
     */
    const VALUE_AMERICA_PORT_AU_PRINCE = 'America/Port-au-Prince';
    /**
     * Constant for value 'America/Port_of_Spain'
     * @return string 'America/Port_of_Spain'
     */
    const VALUE_AMERICA_PORT_OF_SPAIN = 'America/Port_of_Spain';
    /**
     * Constant for value 'America/Porto_Velho'
     * @return string 'America/Porto_Velho'
     */
    const VALUE_AMERICA_PORTO_VELHO = 'America/Porto_Velho';
    /**
     * Constant for value 'America/Puerto_Rico'
     * @return string 'America/Puerto_Rico'
     */
    const VALUE_AMERICA_PUERTO_RICO = 'America/Puerto_Rico';
    /**
     * Constant for value 'America/Rainy_River'
     * @return string 'America/Rainy_River'
     */
    const VALUE_AMERICA_RAINY_RIVER = 'America/Rainy_River';
    /**
     * Constant for value 'America/Rankin_Inlet'
     * @return string 'America/Rankin_Inlet'
     */
    const VALUE_AMERICA_RANKIN_INLET = 'America/Rankin_Inlet';
    /**
     * Constant for value 'America/Recife'
     * @return string 'America/Recife'
     */
    const VALUE_AMERICA_RECIFE = 'America/Recife';
    /**
     * Constant for value 'America/Regina'
     * @return string 'America/Regina'
     */
    const VALUE_AMERICA_REGINA = 'America/Regina';
    /**
     * Constant for value 'America/Resolute'
     * @return string 'America/Resolute'
     */
    const VALUE_AMERICA_RESOLUTE = 'America/Resolute';
    /**
     * Constant for value 'America/Rio_Branco'
     * @return string 'America/Rio_Branco'
     */
    const VALUE_AMERICA_RIO_BRANCO = 'America/Rio_Branco';
    /**
     * Constant for value 'America/Santarem'
     * @return string 'America/Santarem'
     */
    const VALUE_AMERICA_SANTAREM = 'America/Santarem';
    /**
     * Constant for value 'America/Santiago'
     * @return string 'America/Santiago'
     */
    const VALUE_AMERICA_SANTIAGO = 'America/Santiago';
    /**
     * Constant for value 'America/Santo_Domingo'
     * @return string 'America/Santo_Domingo'
     */
    const VALUE_AMERICA_SANTO_DOMINGO = 'America/Santo_Domingo';
    /**
     * Constant for value 'America/Sao_Paulo'
     * @return string 'America/Sao_Paulo'
     */
    const VALUE_AMERICA_SAO_PAULO = 'America/Sao_Paulo';
    /**
     * Constant for value 'America/Scoresbysund'
     * @return string 'America/Scoresbysund'
     */
    const VALUE_AMERICA_SCORESBYSUND = 'America/Scoresbysund';
    /**
     * Constant for value 'America/Shiprock'
     * @return string 'America/Shiprock'
     */
    const VALUE_AMERICA_SHIPROCK = 'America/Shiprock';
    /**
     * Constant for value 'America/St_Barthelemy'
     * @return string 'America/St_Barthelemy'
     */
    const VALUE_AMERICA_ST_BARTHELEMY = 'America/St_Barthelemy';
    /**
     * Constant for value 'America/St_Johns'
     * @return string 'America/St_Johns'
     */
    const VALUE_AMERICA_ST_JOHNS = 'America/St_Johns';
    /**
     * Constant for value 'America/St_Kitts'
     * @return string 'America/St_Kitts'
     */
    const VALUE_AMERICA_ST_KITTS = 'America/St_Kitts';
    /**
     * Constant for value 'America/St_Lucia'
     * @return string 'America/St_Lucia'
     */
    const VALUE_AMERICA_ST_LUCIA = 'America/St_Lucia';
    /**
     * Constant for value 'America/St_Thomas'
     * @return string 'America/St_Thomas'
     */
    const VALUE_AMERICA_ST_THOMAS = 'America/St_Thomas';
    /**
     * Constant for value 'America/St_Vincent'
     * @return string 'America/St_Vincent'
     */
    const VALUE_AMERICA_ST_VINCENT = 'America/St_Vincent';
    /**
     * Constant for value 'America/Swift_Current'
     * @return string 'America/Swift_Current'
     */
    const VALUE_AMERICA_SWIFT_CURRENT = 'America/Swift_Current';
    /**
     * Constant for value 'America/Tegucigalpa'
     * @return string 'America/Tegucigalpa'
     */
    const VALUE_AMERICA_TEGUCIGALPA = 'America/Tegucigalpa';
    /**
     * Constant for value 'America/Thule'
     * @return string 'America/Thule'
     */
    const VALUE_AMERICA_THULE = 'America/Thule';
    /**
     * Constant for value 'America/Thunder_Bay'
     * @return string 'America/Thunder_Bay'
     */
    const VALUE_AMERICA_THUNDER_BAY = 'America/Thunder_Bay';
    /**
     * Constant for value 'America/Tijuana'
     * @return string 'America/Tijuana'
     */
    const VALUE_AMERICA_TIJUANA = 'America/Tijuana';
    /**
     * Constant for value 'America/Toronto'
     * @return string 'America/Toronto'
     */
    const VALUE_AMERICA_TORONTO = 'America/Toronto';
    /**
     * Constant for value 'America/Tortola'
     * @return string 'America/Tortola'
     */
    const VALUE_AMERICA_TORTOLA = 'America/Tortola';
    /**
     * Constant for value 'America/Vancouver'
     * @return string 'America/Vancouver'
     */
    const VALUE_AMERICA_VANCOUVER = 'America/Vancouver';
    /**
     * Constant for value 'America/Whitehorse'
     * @return string 'America/Whitehorse'
     */
    const VALUE_AMERICA_WHITEHORSE = 'America/Whitehorse';
    /**
     * Constant for value 'America/Winnipeg'
     * @return string 'America/Winnipeg'
     */
    const VALUE_AMERICA_WINNIPEG = 'America/Winnipeg';
    /**
     * Constant for value 'America/Yakutat'
     * @return string 'America/Yakutat'
     */
    const VALUE_AMERICA_YAKUTAT = 'America/Yakutat';
    /**
     * Constant for value 'America/Yellowknife'
     * @return string 'America/Yellowknife'
     */
    const VALUE_AMERICA_YELLOWKNIFE = 'America/Yellowknife';
    /**
     * Constant for value 'Antarctica/Casey'
     * @return string 'Antarctica/Casey'
     */
    const VALUE_ANTARCTICA_CASEY = 'Antarctica/Casey';
    /**
     * Constant for value 'Antarctica/Davis'
     * @return string 'Antarctica/Davis'
     */
    const VALUE_ANTARCTICA_DAVIS = 'Antarctica/Davis';
    /**
     * Constant for value 'Antarctica/DumontDUrville'
     * @return string 'Antarctica/DumontDUrville'
     */
    const VALUE_ANTARCTICA_DUMONT_DURVILLE = 'Antarctica/DumontDUrville';
    /**
     * Constant for value 'Antarctica/Mawson'
     * @return string 'Antarctica/Mawson'
     */
    const VALUE_ANTARCTICA_MAWSON = 'Antarctica/Mawson';
    /**
     * Constant for value 'Antarctica/McMurdo'
     * @return string 'Antarctica/McMurdo'
     */
    const VALUE_ANTARCTICA_MC_MURDO = 'Antarctica/McMurdo';
    /**
     * Constant for value 'Antarctica/Palmer'
     * @return string 'Antarctica/Palmer'
     */
    const VALUE_ANTARCTICA_PALMER = 'Antarctica/Palmer';
    /**
     * Constant for value 'Antarctica/Rothera'
     * @return string 'Antarctica/Rothera'
     */
    const VALUE_ANTARCTICA_ROTHERA = 'Antarctica/Rothera';
    /**
     * Constant for value 'Antarctica/South_Pole'
     * @return string 'Antarctica/South_Pole'
     */
    const VALUE_ANTARCTICA_SOUTH_POLE = 'Antarctica/South_Pole';
    /**
     * Constant for value 'Antarctica/Syowa'
     * @return string 'Antarctica/Syowa'
     */
    const VALUE_ANTARCTICA_SYOWA = 'Antarctica/Syowa';
    /**
     * Constant for value 'Antarctica/Vostok'
     * @return string 'Antarctica/Vostok'
     */
    const VALUE_ANTARCTICA_VOSTOK = 'Antarctica/Vostok';
    /**
     * Constant for value 'Arctic/Longyearbyen'
     * @return string 'Arctic/Longyearbyen'
     */
    const VALUE_ARCTIC_LONGYEARBYEN = 'Arctic/Longyearbyen';
    /**
     * Constant for value 'Asia/Aden'
     * @return string 'Asia/Aden'
     */
    const VALUE_ASIA_ADEN = 'Asia/Aden';
    /**
     * Constant for value 'Asia/Almaty'
     * @return string 'Asia/Almaty'
     */
    const VALUE_ASIA_ALMATY = 'Asia/Almaty';
    /**
     * Constant for value 'Asia/Amman'
     * @return string 'Asia/Amman'
     */
    const VALUE_ASIA_AMMAN = 'Asia/Amman';
    /**
     * Constant for value 'Asia/Anadyr'
     * @return string 'Asia/Anadyr'
     */
    const VALUE_ASIA_ANADYR = 'Asia/Anadyr';
    /**
     * Constant for value 'Asia/Aqtau'
     * @return string 'Asia/Aqtau'
     */
    const VALUE_ASIA_AQTAU = 'Asia/Aqtau';
    /**
     * Constant for value 'Asia/Aqtobe'
     * @return string 'Asia/Aqtobe'
     */
    const VALUE_ASIA_AQTOBE = 'Asia/Aqtobe';
    /**
     * Constant for value 'Asia/Ashgabat'
     * @return string 'Asia/Ashgabat'
     */
    const VALUE_ASIA_ASHGABAT = 'Asia/Ashgabat';
    /**
     * Constant for value 'Asia/Baghdad'
     * @return string 'Asia/Baghdad'
     */
    const VALUE_ASIA_BAGHDAD = 'Asia/Baghdad';
    /**
     * Constant for value 'Asia/Bahrain'
     * @return string 'Asia/Bahrain'
     */
    const VALUE_ASIA_BAHRAIN = 'Asia/Bahrain';
    /**
     * Constant for value 'Asia/Baku'
     * @return string 'Asia/Baku'
     */
    const VALUE_ASIA_BAKU = 'Asia/Baku';
    /**
     * Constant for value 'Asia/Bangkok'
     * @return string 'Asia/Bangkok'
     */
    const VALUE_ASIA_BANGKOK = 'Asia/Bangkok';
    /**
     * Constant for value 'Asia/Beirut'
     * @return string 'Asia/Beirut'
     */
    const VALUE_ASIA_BEIRUT = 'Asia/Beirut';
    /**
     * Constant for value 'Asia/Bishkek'
     * @return string 'Asia/Bishkek'
     */
    const VALUE_ASIA_BISHKEK = 'Asia/Bishkek';
    /**
     * Constant for value 'Asia/Brunei'
     * @return string 'Asia/Brunei'
     */
    const VALUE_ASIA_BRUNEI = 'Asia/Brunei';
    /**
     * Constant for value 'Asia/Choibalsan'
     * @return string 'Asia/Choibalsan'
     */
    const VALUE_ASIA_CHOIBALSAN = 'Asia/Choibalsan';
    /**
     * Constant for value 'Asia/Chongqing'
     * @return string 'Asia/Chongqing'
     */
    const VALUE_ASIA_CHONGQING = 'Asia/Chongqing';
    /**
     * Constant for value 'Asia/Colombo'
     * @return string 'Asia/Colombo'
     */
    const VALUE_ASIA_COLOMBO = 'Asia/Colombo';
    /**
     * Constant for value 'Asia/Damascus'
     * @return string 'Asia/Damascus'
     */
    const VALUE_ASIA_DAMASCUS = 'Asia/Damascus';
    /**
     * Constant for value 'Asia/Dhaka'
     * @return string 'Asia/Dhaka'
     */
    const VALUE_ASIA_DHAKA = 'Asia/Dhaka';
    /**
     * Constant for value 'Asia/Dili'
     * @return string 'Asia/Dili'
     */
    const VALUE_ASIA_DILI = 'Asia/Dili';
    /**
     * Constant for value 'Asia/Dubai'
     * @return string 'Asia/Dubai'
     */
    const VALUE_ASIA_DUBAI = 'Asia/Dubai';
    /**
     * Constant for value 'Asia/Dushanbe'
     * @return string 'Asia/Dushanbe'
     */
    const VALUE_ASIA_DUSHANBE = 'Asia/Dushanbe';
    /**
     * Constant for value 'Asia/Gaza'
     * @return string 'Asia/Gaza'
     */
    const VALUE_ASIA_GAZA = 'Asia/Gaza';
    /**
     * Constant for value 'Asia/Harbin'
     * @return string 'Asia/Harbin'
     */
    const VALUE_ASIA_HARBIN = 'Asia/Harbin';
    /**
     * Constant for value 'Asia/Ho_Chi_Minh'
     * @return string 'Asia/Ho_Chi_Minh'
     */
    const VALUE_ASIA_HO_CHI_MINH = 'Asia/Ho_Chi_Minh';
    /**
     * Constant for value 'Asia/Hong_Kong'
     * @return string 'Asia/Hong_Kong'
     */
    const VALUE_ASIA_HONG_KONG = 'Asia/Hong_Kong';
    /**
     * Constant for value 'Asia/Hovd'
     * @return string 'Asia/Hovd'
     */
    const VALUE_ASIA_HOVD = 'Asia/Hovd';
    /**
     * Constant for value 'Asia/Irkutsk'
     * @return string 'Asia/Irkutsk'
     */
    const VALUE_ASIA_IRKUTSK = 'Asia/Irkutsk';
    /**
     * Constant for value 'Asia/Istanbul'
     * @return string 'Asia/Istanbul'
     */
    const VALUE_ASIA_ISTANBUL = 'Asia/Istanbul';
    /**
     * Constant for value 'Asia/Jakarta'
     * @return string 'Asia/Jakarta'
     */
    const VALUE_ASIA_JAKARTA = 'Asia/Jakarta';
    /**
     * Constant for value 'Asia/Jayapura'
     * @return string 'Asia/Jayapura'
     */
    const VALUE_ASIA_JAYAPURA = 'Asia/Jayapura';
    /**
     * Constant for value 'Asia/Jerusalem'
     * @return string 'Asia/Jerusalem'
     */
    const VALUE_ASIA_JERUSALEM = 'Asia/Jerusalem';
    /**
     * Constant for value 'Asia/Kabul'
     * @return string 'Asia/Kabul'
     */
    const VALUE_ASIA_KABUL = 'Asia/Kabul';
    /**
     * Constant for value 'Asia/Kamchatka'
     * @return string 'Asia/Kamchatka'
     */
    const VALUE_ASIA_KAMCHATKA = 'Asia/Kamchatka';
    /**
     * Constant for value 'Asia/Karachi'
     * @return string 'Asia/Karachi'
     */
    const VALUE_ASIA_KARACHI = 'Asia/Karachi';
    /**
     * Constant for value 'Asia/Kashgar'
     * @return string 'Asia/Kashgar'
     */
    const VALUE_ASIA_KASHGAR = 'Asia/Kashgar';
    /**
     * Constant for value 'Asia/Kathmandu'
     * @return string 'Asia/Kathmandu'
     */
    const VALUE_ASIA_KATHMANDU = 'Asia/Kathmandu';
    /**
     * Constant for value 'Asia/Kolkata'
     * @return string 'Asia/Kolkata'
     */
    const VALUE_ASIA_KOLKATA = 'Asia/Kolkata';
    /**
     * Constant for value 'Asia/Krasnoyarsk'
     * @return string 'Asia/Krasnoyarsk'
     */
    const VALUE_ASIA_KRASNOYARSK = 'Asia/Krasnoyarsk';
    /**
     * Constant for value 'Asia/Kuala_Lumpur'
     * @return string 'Asia/Kuala_Lumpur'
     */
    const VALUE_ASIA_KUALA_LUMPUR = 'Asia/Kuala_Lumpur';
    /**
     * Constant for value 'Asia/Kuching'
     * @return string 'Asia/Kuching'
     */
    const VALUE_ASIA_KUCHING = 'Asia/Kuching';
    /**
     * Constant for value 'Asia/Kuwait'
     * @return string 'Asia/Kuwait'
     */
    const VALUE_ASIA_KUWAIT = 'Asia/Kuwait';
    /**
     * Constant for value 'Asia/Macau'
     * @return string 'Asia/Macau'
     */
    const VALUE_ASIA_MACAU = 'Asia/Macau';
    /**
     * Constant for value 'Asia/Magadan'
     * @return string 'Asia/Magadan'
     */
    const VALUE_ASIA_MAGADAN = 'Asia/Magadan';
    /**
     * Constant for value 'Asia/Makassar'
     * @return string 'Asia/Makassar'
     */
    const VALUE_ASIA_MAKASSAR = 'Asia/Makassar';
    /**
     * Constant for value 'Asia/Manila'
     * @return string 'Asia/Manila'
     */
    const VALUE_ASIA_MANILA = 'Asia/Manila';
    /**
     * Constant for value 'Asia/Muscat'
     * @return string 'Asia/Muscat'
     */
    const VALUE_ASIA_MUSCAT = 'Asia/Muscat';
    /**
     * Constant for value 'Asia/Nicosia'
     * @return string 'Asia/Nicosia'
     */
    const VALUE_ASIA_NICOSIA = 'Asia/Nicosia';
    /**
     * Constant for value 'Asia/Novosibirsk'
     * @return string 'Asia/Novosibirsk'
     */
    const VALUE_ASIA_NOVOSIBIRSK = 'Asia/Novosibirsk';
    /**
     * Constant for value 'Asia/Omsk'
     * @return string 'Asia/Omsk'
     */
    const VALUE_ASIA_OMSK = 'Asia/Omsk';
    /**
     * Constant for value 'Asia/Oral'
     * @return string 'Asia/Oral'
     */
    const VALUE_ASIA_ORAL = 'Asia/Oral';
    /**
     * Constant for value 'Asia/Phnom_Penh'
     * @return string 'Asia/Phnom_Penh'
     */
    const VALUE_ASIA_PHNOM_PENH = 'Asia/Phnom_Penh';
    /**
     * Constant for value 'Asia/Pontianak'
     * @return string 'Asia/Pontianak'
     */
    const VALUE_ASIA_PONTIANAK = 'Asia/Pontianak';
    /**
     * Constant for value 'Asia/Pyongyang'
     * @return string 'Asia/Pyongyang'
     */
    const VALUE_ASIA_PYONGYANG = 'Asia/Pyongyang';
    /**
     * Constant for value 'Asia/Qatar'
     * @return string 'Asia/Qatar'
     */
    const VALUE_ASIA_QATAR = 'Asia/Qatar';
    /**
     * Constant for value 'Asia/Qyzylorda'
     * @return string 'Asia/Qyzylorda'
     */
    const VALUE_ASIA_QYZYLORDA = 'Asia/Qyzylorda';
    /**
     * Constant for value 'Asia/Rangoon'
     * @return string 'Asia/Rangoon'
     */
    const VALUE_ASIA_RANGOON = 'Asia/Rangoon';
    /**
     * Constant for value 'Asia/Riyadh'
     * @return string 'Asia/Riyadh'
     */
    const VALUE_ASIA_RIYADH = 'Asia/Riyadh';
    /**
     * Constant for value 'Asia/Riyadh87'
     * @return string 'Asia/Riyadh87'
     */
    const VALUE_ASIA_RIYADH_87 = 'Asia/Riyadh87';
    /**
     * Constant for value 'Asia/Riyadh88'
     * @return string 'Asia/Riyadh88'
     */
    const VALUE_ASIA_RIYADH_88 = 'Asia/Riyadh88';
    /**
     * Constant for value 'Asia/Riyadh89'
     * @return string 'Asia/Riyadh89'
     */
    const VALUE_ASIA_RIYADH_89 = 'Asia/Riyadh89';
    /**
     * Constant for value 'Asia/Sakhalin'
     * @return string 'Asia/Sakhalin'
     */
    const VALUE_ASIA_SAKHALIN = 'Asia/Sakhalin';
    /**
     * Constant for value 'Asia/Samarkand'
     * @return string 'Asia/Samarkand'
     */
    const VALUE_ASIA_SAMARKAND = 'Asia/Samarkand';
    /**
     * Constant for value 'Asia/Seoul'
     * @return string 'Asia/Seoul'
     */
    const VALUE_ASIA_SEOUL = 'Asia/Seoul';
    /**
     * Constant for value 'Asia/Shanghai'
     * @return string 'Asia/Shanghai'
     */
    const VALUE_ASIA_SHANGHAI = 'Asia/Shanghai';
    /**
     * Constant for value 'Asia/Singapore'
     * @return string 'Asia/Singapore'
     */
    const VALUE_ASIA_SINGAPORE = 'Asia/Singapore';
    /**
     * Constant for value 'Asia/Taipei'
     * @return string 'Asia/Taipei'
     */
    const VALUE_ASIA_TAIPEI = 'Asia/Taipei';
    /**
     * Constant for value 'Asia/Tashkent'
     * @return string 'Asia/Tashkent'
     */
    const VALUE_ASIA_TASHKENT = 'Asia/Tashkent';
    /**
     * Constant for value 'Asia/Tbilisi'
     * @return string 'Asia/Tbilisi'
     */
    const VALUE_ASIA_TBILISI = 'Asia/Tbilisi';
    /**
     * Constant for value 'Asia/Tehran'
     * @return string 'Asia/Tehran'
     */
    const VALUE_ASIA_TEHRAN = 'Asia/Tehran';
    /**
     * Constant for value 'Asia/Thimphu'
     * @return string 'Asia/Thimphu'
     */
    const VALUE_ASIA_THIMPHU = 'Asia/Thimphu';
    /**
     * Constant for value 'Asia/Tokyo'
     * @return string 'Asia/Tokyo'
     */
    const VALUE_ASIA_TOKYO = 'Asia/Tokyo';
    /**
     * Constant for value 'Asia/Ulaanbaatar'
     * @return string 'Asia/Ulaanbaatar'
     */
    const VALUE_ASIA_ULAANBAATAR = 'Asia/Ulaanbaatar';
    /**
     * Constant for value 'Asia/Urumqi'
     * @return string 'Asia/Urumqi'
     */
    const VALUE_ASIA_URUMQI = 'Asia/Urumqi';
    /**
     * Constant for value 'Asia/Vientiane'
     * @return string 'Asia/Vientiane'
     */
    const VALUE_ASIA_VIENTIANE = 'Asia/Vientiane';
    /**
     * Constant for value 'Asia/Vladivostok'
     * @return string 'Asia/Vladivostok'
     */
    const VALUE_ASIA_VLADIVOSTOK = 'Asia/Vladivostok';
    /**
     * Constant for value 'Asia/Yakutsk'
     * @return string 'Asia/Yakutsk'
     */
    const VALUE_ASIA_YAKUTSK = 'Asia/Yakutsk';
    /**
     * Constant for value 'Asia/Yekaterinburg'
     * @return string 'Asia/Yekaterinburg'
     */
    const VALUE_ASIA_YEKATERINBURG = 'Asia/Yekaterinburg';
    /**
     * Constant for value 'Asia/Yerevan'
     * @return string 'Asia/Yerevan'
     */
    const VALUE_ASIA_YEREVAN = 'Asia/Yerevan';
    /**
     * Constant for value 'Atlantic/Azores'
     * @return string 'Atlantic/Azores'
     */
    const VALUE_ATLANTIC_AZORES = 'Atlantic/Azores';
    /**
     * Constant for value 'Atlantic/Bermuda'
     * @return string 'Atlantic/Bermuda'
     */
    const VALUE_ATLANTIC_BERMUDA = 'Atlantic/Bermuda';
    /**
     * Constant for value 'Atlantic/Canary'
     * @return string 'Atlantic/Canary'
     */
    const VALUE_ATLANTIC_CANARY = 'Atlantic/Canary';
    /**
     * Constant for value 'Atlantic/Cape_Verde'
     * @return string 'Atlantic/Cape_Verde'
     */
    const VALUE_ATLANTIC_CAPE_VERDE = 'Atlantic/Cape_Verde';
    /**
     * Constant for value 'Atlantic/Faroe'
     * @return string 'Atlantic/Faroe'
     */
    const VALUE_ATLANTIC_FAROE = 'Atlantic/Faroe';
    /**
     * Constant for value 'Atlantic/Madeira'
     * @return string 'Atlantic/Madeira'
     */
    const VALUE_ATLANTIC_MADEIRA = 'Atlantic/Madeira';
    /**
     * Constant for value 'Atlantic/Reykjavik'
     * @return string 'Atlantic/Reykjavik'
     */
    const VALUE_ATLANTIC_REYKJAVIK = 'Atlantic/Reykjavik';
    /**
     * Constant for value 'Atlantic/South_Georgia'
     * @return string 'Atlantic/South_Georgia'
     */
    const VALUE_ATLANTIC_SOUTH_GEORGIA = 'Atlantic/South_Georgia';
    /**
     * Constant for value 'Atlantic/Stanley'
     * @return string 'Atlantic/Stanley'
     */
    const VALUE_ATLANTIC_STANLEY = 'Atlantic/Stanley';
    /**
     * Constant for value 'Atlantic/St_Helena'
     * @return string 'Atlantic/St_Helena'
     */
    const VALUE_ATLANTIC_ST_HELENA = 'Atlantic/St_Helena';
    /**
     * Constant for value 'Australia/Adelaide'
     * @return string 'Australia/Adelaide'
     */
    const VALUE_AUSTRALIA_ADELAIDE = 'Australia/Adelaide';
    /**
     * Constant for value 'Australia/Brisbane'
     * @return string 'Australia/Brisbane'
     */
    const VALUE_AUSTRALIA_BRISBANE = 'Australia/Brisbane';
    /**
     * Constant for value 'Australia/Broken_Hill'
     * @return string 'Australia/Broken_Hill'
     */
    const VALUE_AUSTRALIA_BROKEN_HILL = 'Australia/Broken_Hill';
    /**
     * Constant for value 'Australia/Currie'
     * @return string 'Australia/Currie'
     */
    const VALUE_AUSTRALIA_CURRIE = 'Australia/Currie';
    /**
     * Constant for value 'Australia/Darwin'
     * @return string 'Australia/Darwin'
     */
    const VALUE_AUSTRALIA_DARWIN = 'Australia/Darwin';
    /**
     * Constant for value 'Australia/Eucla'
     * @return string 'Australia/Eucla'
     */
    const VALUE_AUSTRALIA_EUCLA = 'Australia/Eucla';
    /**
     * Constant for value 'Australia/Hobart'
     * @return string 'Australia/Hobart'
     */
    const VALUE_AUSTRALIA_HOBART = 'Australia/Hobart';
    /**
     * Constant for value 'Australia/Lindeman'
     * @return string 'Australia/Lindeman'
     */
    const VALUE_AUSTRALIA_LINDEMAN = 'Australia/Lindeman';
    /**
     * Constant for value 'Australia/Lord_Howe'
     * @return string 'Australia/Lord_Howe'
     */
    const VALUE_AUSTRALIA_LORD_HOWE = 'Australia/Lord_Howe';
    /**
     * Constant for value 'Australia/Melbourne'
     * @return string 'Australia/Melbourne'
     */
    const VALUE_AUSTRALIA_MELBOURNE = 'Australia/Melbourne';
    /**
     * Constant for value 'Australia/Perth'
     * @return string 'Australia/Perth'
     */
    const VALUE_AUSTRALIA_PERTH = 'Australia/Perth';
    /**
     * Constant for value 'Australia/Sydney'
     * @return string 'Australia/Sydney'
     */
    const VALUE_AUSTRALIA_SYDNEY = 'Australia/Sydney';
    /**
     * Constant for value 'CET'
     * @return string 'CET'
     */
    const VALUE_CET = 'CET';
    /**
     * Constant for value 'CST6CDT'
     * @return string 'CST6CDT'
     */
    const VALUE_CST_6_CDT = 'CST6CDT';
    /**
     * Constant for value 'EET'
     * @return string 'EET'
     */
    const VALUE_EET = 'EET';
    /**
     * Constant for value 'EST'
     * @return string 'EST'
     */
    const VALUE_EST = 'EST';
    /**
     * Constant for value 'EST5EDT'
     * @return string 'EST5EDT'
     */
    const VALUE_EST_5_EDT = 'EST5EDT';
    /**
     * Constant for value 'Etc/GMT'
     * @return string 'Etc/GMT'
     */
    const VALUE_ETC_GMT = 'Etc/GMT';
    /**
     * Constant for value 'Etc/GMT0'
     * @return string 'Etc/GMT0'
     */
    const VALUE_ETC_GMT_0 = 'Etc/GMT0';
    /**
     * Constant for value 'Etc/GMT-0'
     * @return string 'Etc/GMT-0'
     */
    const VALUE_ETC_GMT_0_1 = 'Etc/GMT-0';
    /**
     * Constant for value 'Etc/GMT+0'
     * @return string 'Etc/GMT+0'
     */
    const VALUE_ETC_GMT_0_2 = 'Etc/GMT+0';
    /**
     * Constant for value 'Etc/GMT-1'
     * @return string 'Etc/GMT-1'
     */
    const VALUE_ETC_GMT_1 = 'Etc/GMT-1';
    /**
     * Constant for value 'Etc/GMT+1'
     * @return string 'Etc/GMT+1'
     */
    const VALUE_ETC_GMT_1_1 = 'Etc/GMT+1';
    /**
     * Constant for value 'Etc/GMT-10'
     * @return string 'Etc/GMT-10'
     */
    const VALUE_ETC_GMT_10 = 'Etc/GMT-10';
    /**
     * Constant for value 'Etc/GMT+10'
     * @return string 'Etc/GMT+10'
     */
    const VALUE_ETC_GMT_10_1 = 'Etc/GMT+10';
    /**
     * Constant for value 'Etc/GMT-11'
     * @return string 'Etc/GMT-11'
     */
    const VALUE_ETC_GMT_11 = 'Etc/GMT-11';
    /**
     * Constant for value 'Etc/GMT+11'
     * @return string 'Etc/GMT+11'
     */
    const VALUE_ETC_GMT_11_1 = 'Etc/GMT+11';
    /**
     * Constant for value 'Etc/GMT-12'
     * @return string 'Etc/GMT-12'
     */
    const VALUE_ETC_GMT_12 = 'Etc/GMT-12';
    /**
     * Constant for value 'Etc/GMT+12'
     * @return string 'Etc/GMT+12'
     */
    const VALUE_ETC_GMT_12_1 = 'Etc/GMT+12';
    /**
     * Constant for value 'Etc/GMT-13'
     * @return string 'Etc/GMT-13'
     */
    const VALUE_ETC_GMT_13 = 'Etc/GMT-13';
    /**
     * Constant for value 'Etc/GMT-14'
     * @return string 'Etc/GMT-14'
     */
    const VALUE_ETC_GMT_14 = 'Etc/GMT-14';
    /**
     * Constant for value 'Etc/GMT-2'
     * @return string 'Etc/GMT-2'
     */
    const VALUE_ETC_GMT_2 = 'Etc/GMT-2';
    /**
     * Constant for value 'Etc/GMT+2'
     * @return string 'Etc/GMT+2'
     */
    const VALUE_ETC_GMT_2_1 = 'Etc/GMT+2';
    /**
     * Constant for value 'Etc/GMT-3'
     * @return string 'Etc/GMT-3'
     */
    const VALUE_ETC_GMT_3 = 'Etc/GMT-3';
    /**
     * Constant for value 'Etc/GMT+3'
     * @return string 'Etc/GMT+3'
     */
    const VALUE_ETC_GMT_3_1 = 'Etc/GMT+3';
    /**
     * Constant for value 'Etc/GMT-4'
     * @return string 'Etc/GMT-4'
     */
    const VALUE_ETC_GMT_4 = 'Etc/GMT-4';
    /**
     * Constant for value 'Etc/GMT+4'
     * @return string 'Etc/GMT+4'
     */
    const VALUE_ETC_GMT_4_1 = 'Etc/GMT+4';
    /**
     * Constant for value 'Etc/GMT-5'
     * @return string 'Etc/GMT-5'
     */
    const VALUE_ETC_GMT_5 = 'Etc/GMT-5';
    /**
     * Constant for value 'Etc/GMT+5'
     * @return string 'Etc/GMT+5'
     */
    const VALUE_ETC_GMT_5_1 = 'Etc/GMT+5';
    /**
     * Constant for value 'Etc/GMT-6'
     * @return string 'Etc/GMT-6'
     */
    const VALUE_ETC_GMT_6 = 'Etc/GMT-6';
    /**
     * Constant for value 'Etc/GMT+6'
     * @return string 'Etc/GMT+6'
     */
    const VALUE_ETC_GMT_6_1 = 'Etc/GMT+6';
    /**
     * Constant for value 'Etc/GMT-7'
     * @return string 'Etc/GMT-7'
     */
    const VALUE_ETC_GMT_7 = 'Etc/GMT-7';
    /**
     * Constant for value 'Etc/GMT+7'
     * @return string 'Etc/GMT+7'
     */
    const VALUE_ETC_GMT_7_1 = 'Etc/GMT+7';
    /**
     * Constant for value 'Etc/GMT-8'
     * @return string 'Etc/GMT-8'
     */
    const VALUE_ETC_GMT_8 = 'Etc/GMT-8';
    /**
     * Constant for value 'Etc/GMT+8'
     * @return string 'Etc/GMT+8'
     */
    const VALUE_ETC_GMT_8_1 = 'Etc/GMT+8';
    /**
     * Constant for value 'Etc/GMT-9'
     * @return string 'Etc/GMT-9'
     */
    const VALUE_ETC_GMT_9 = 'Etc/GMT-9';
    /**
     * Constant for value 'Etc/GMT+9'
     * @return string 'Etc/GMT+9'
     */
    const VALUE_ETC_GMT_9_1 = 'Etc/GMT+9';
    /**
     * Constant for value 'Etc/Greenwich'
     * @return string 'Etc/Greenwich'
     */
    const VALUE_ETC_GREENWICH = 'Etc/Greenwich';
    /**
     * Constant for value 'Etc/UCT'
     * @return string 'Etc/UCT'
     */
    const VALUE_ETC_UCT = 'Etc/UCT';
    /**
     * Constant for value 'Etc/Universal'
     * @return string 'Etc/Universal'
     */
    const VALUE_ETC_UNIVERSAL = 'Etc/Universal';
    /**
     * Constant for value 'Etc/UTC'
     * @return string 'Etc/UTC'
     */
    const VALUE_ETC_UTC = 'Etc/UTC';
    /**
     * Constant for value 'Etc/Zulu'
     * @return string 'Etc/Zulu'
     */
    const VALUE_ETC_ZULU = 'Etc/Zulu';
    /**
     * Constant for value 'Europe/Amsterdam'
     * @return string 'Europe/Amsterdam'
     */
    const VALUE_EUROPE_AMSTERDAM = 'Europe/Amsterdam';
    /**
     * Constant for value 'Europe/Andorra'
     * @return string 'Europe/Andorra'
     */
    const VALUE_EUROPE_ANDORRA = 'Europe/Andorra';
    /**
     * Constant for value 'Europe/Athens'
     * @return string 'Europe/Athens'
     */
    const VALUE_EUROPE_ATHENS = 'Europe/Athens';
    /**
     * Constant for value 'Europe/Belgrade'
     * @return string 'Europe/Belgrade'
     */
    const VALUE_EUROPE_BELGRADE = 'Europe/Belgrade';
    /**
     * Constant for value 'Europe/Berlin'
     * @return string 'Europe/Berlin'
     */
    const VALUE_EUROPE_BERLIN = 'Europe/Berlin';
    /**
     * Constant for value 'Europe/Bratislava'
     * @return string 'Europe/Bratislava'
     */
    const VALUE_EUROPE_BRATISLAVA = 'Europe/Bratislava';
    /**
     * Constant for value 'Europe/Brussels'
     * @return string 'Europe/Brussels'
     */
    const VALUE_EUROPE_BRUSSELS = 'Europe/Brussels';
    /**
     * Constant for value 'Europe/Bucharest'
     * @return string 'Europe/Bucharest'
     */
    const VALUE_EUROPE_BUCHAREST = 'Europe/Bucharest';
    /**
     * Constant for value 'Europe/Budapest'
     * @return string 'Europe/Budapest'
     */
    const VALUE_EUROPE_BUDAPEST = 'Europe/Budapest';
    /**
     * Constant for value 'Europe/Chisinau'
     * @return string 'Europe/Chisinau'
     */
    const VALUE_EUROPE_CHISINAU = 'Europe/Chisinau';
    /**
     * Constant for value 'Europe/Copenhagen'
     * @return string 'Europe/Copenhagen'
     */
    const VALUE_EUROPE_COPENHAGEN = 'Europe/Copenhagen';
    /**
     * Constant for value 'Europe/Dublin'
     * @return string 'Europe/Dublin'
     */
    const VALUE_EUROPE_DUBLIN = 'Europe/Dublin';
    /**
     * Constant for value 'Europe/Gibraltar'
     * @return string 'Europe/Gibraltar'
     */
    const VALUE_EUROPE_GIBRALTAR = 'Europe/Gibraltar';
    /**
     * Constant for value 'Europe/Guernsey'
     * @return string 'Europe/Guernsey'
     */
    const VALUE_EUROPE_GUERNSEY = 'Europe/Guernsey';
    /**
     * Constant for value 'Europe/Helsinki'
     * @return string 'Europe/Helsinki'
     */
    const VALUE_EUROPE_HELSINKI = 'Europe/Helsinki';
    /**
     * Constant for value 'Europe/Isle_of_Man'
     * @return string 'Europe/Isle_of_Man'
     */
    const VALUE_EUROPE_ISLE_OF_MAN = 'Europe/Isle_of_Man';
    /**
     * Constant for value 'Europe/Istanbul'
     * @return string 'Europe/Istanbul'
     */
    const VALUE_EUROPE_ISTANBUL = 'Europe/Istanbul';
    /**
     * Constant for value 'Europe/Jersey'
     * @return string 'Europe/Jersey'
     */
    const VALUE_EUROPE_JERSEY = 'Europe/Jersey';
    /**
     * Constant for value 'Europe/Kaliningrad'
     * @return string 'Europe/Kaliningrad'
     */
    const VALUE_EUROPE_KALININGRAD = 'Europe/Kaliningrad';
    /**
     * Constant for value 'Europe/Kiev'
     * @return string 'Europe/Kiev'
     */
    const VALUE_EUROPE_KIEV = 'Europe/Kiev';
    /**
     * Constant for value 'Europe/Lisbon'
     * @return string 'Europe/Lisbon'
     */
    const VALUE_EUROPE_LISBON = 'Europe/Lisbon';
    /**
     * Constant for value 'Europe/Ljubljana'
     * @return string 'Europe/Ljubljana'
     */
    const VALUE_EUROPE_LJUBLJANA = 'Europe/Ljubljana';
    /**
     * Constant for value 'Europe/London'
     * @return string 'Europe/London'
     */
    const VALUE_EUROPE_LONDON = 'Europe/London';
    /**
     * Constant for value 'Europe/Luxembourg'
     * @return string 'Europe/Luxembourg'
     */
    const VALUE_EUROPE_LUXEMBOURG = 'Europe/Luxembourg';
    /**
     * Constant for value 'Europe/Madrid'
     * @return string 'Europe/Madrid'
     */
    const VALUE_EUROPE_MADRID = 'Europe/Madrid';
    /**
     * Constant for value 'Europe/Malta'
     * @return string 'Europe/Malta'
     */
    const VALUE_EUROPE_MALTA = 'Europe/Malta';
    /**
     * Constant for value 'Europe/Mariehamn'
     * @return string 'Europe/Mariehamn'
     */
    const VALUE_EUROPE_MARIEHAMN = 'Europe/Mariehamn';
    /**
     * Constant for value 'Europe/Minsk'
     * @return string 'Europe/Minsk'
     */
    const VALUE_EUROPE_MINSK = 'Europe/Minsk';
    /**
     * Constant for value 'Europe/Monaco'
     * @return string 'Europe/Monaco'
     */
    const VALUE_EUROPE_MONACO = 'Europe/Monaco';
    /**
     * Constant for value 'Europe/Moscow'
     * @return string 'Europe/Moscow'
     */
    const VALUE_EUROPE_MOSCOW = 'Europe/Moscow';
    /**
     * Constant for value 'Europe/Nicosia'
     * @return string 'Europe/Nicosia'
     */
    const VALUE_EUROPE_NICOSIA = 'Europe/Nicosia';
    /**
     * Constant for value 'Europe/Oslo'
     * @return string 'Europe/Oslo'
     */
    const VALUE_EUROPE_OSLO = 'Europe/Oslo';
    /**
     * Constant for value 'Europe/Paris'
     * @return string 'Europe/Paris'
     */
    const VALUE_EUROPE_PARIS = 'Europe/Paris';
    /**
     * Constant for value 'Europe/Podgorica'
     * @return string 'Europe/Podgorica'
     */
    const VALUE_EUROPE_PODGORICA = 'Europe/Podgorica';
    /**
     * Constant for value 'Europe/Prague'
     * @return string 'Europe/Prague'
     */
    const VALUE_EUROPE_PRAGUE = 'Europe/Prague';
    /**
     * Constant for value 'Europe/Riga'
     * @return string 'Europe/Riga'
     */
    const VALUE_EUROPE_RIGA = 'Europe/Riga';
    /**
     * Constant for value 'Europe/Rome'
     * @return string 'Europe/Rome'
     */
    const VALUE_EUROPE_ROME = 'Europe/Rome';
    /**
     * Constant for value 'Europe/Samara'
     * @return string 'Europe/Samara'
     */
    const VALUE_EUROPE_SAMARA = 'Europe/Samara';
    /**
     * Constant for value 'Europe/San_Marino'
     * @return string 'Europe/San_Marino'
     */
    const VALUE_EUROPE_SAN_MARINO = 'Europe/San_Marino';
    /**
     * Constant for value 'Europe/Sarajevo'
     * @return string 'Europe/Sarajevo'
     */
    const VALUE_EUROPE_SARAJEVO = 'Europe/Sarajevo';
    /**
     * Constant for value 'Europe/Simferopol'
     * @return string 'Europe/Simferopol'
     */
    const VALUE_EUROPE_SIMFEROPOL = 'Europe/Simferopol';
    /**
     * Constant for value 'Europe/Skopje'
     * @return string 'Europe/Skopje'
     */
    const VALUE_EUROPE_SKOPJE = 'Europe/Skopje';
    /**
     * Constant for value 'Europe/Sofia'
     * @return string 'Europe/Sofia'
     */
    const VALUE_EUROPE_SOFIA = 'Europe/Sofia';
    /**
     * Constant for value 'Europe/Stockholm'
     * @return string 'Europe/Stockholm'
     */
    const VALUE_EUROPE_STOCKHOLM = 'Europe/Stockholm';
    /**
     * Constant for value 'Europe/Tallinn'
     * @return string 'Europe/Tallinn'
     */
    const VALUE_EUROPE_TALLINN = 'Europe/Tallinn';
    /**
     * Constant for value 'Europe/Tirane'
     * @return string 'Europe/Tirane'
     */
    const VALUE_EUROPE_TIRANE = 'Europe/Tirane';
    /**
     * Constant for value 'Europe/Uzhgorod'
     * @return string 'Europe/Uzhgorod'
     */
    const VALUE_EUROPE_UZHGOROD = 'Europe/Uzhgorod';
    /**
     * Constant for value 'Europe/Vaduz'
     * @return string 'Europe/Vaduz'
     */
    const VALUE_EUROPE_VADUZ = 'Europe/Vaduz';
    /**
     * Constant for value 'Europe/Vatican'
     * @return string 'Europe/Vatican'
     */
    const VALUE_EUROPE_VATICAN = 'Europe/Vatican';
    /**
     * Constant for value 'Europe/Vienna'
     * @return string 'Europe/Vienna'
     */
    const VALUE_EUROPE_VIENNA = 'Europe/Vienna';
    /**
     * Constant for value 'Europe/Vilnius'
     * @return string 'Europe/Vilnius'
     */
    const VALUE_EUROPE_VILNIUS = 'Europe/Vilnius';
    /**
     * Constant for value 'Europe/Volgograd'
     * @return string 'Europe/Volgograd'
     */
    const VALUE_EUROPE_VOLGOGRAD = 'Europe/Volgograd';
    /**
     * Constant for value 'Europe/Warsaw'
     * @return string 'Europe/Warsaw'
     */
    const VALUE_EUROPE_WARSAW = 'Europe/Warsaw';
    /**
     * Constant for value 'Europe/Zagreb'
     * @return string 'Europe/Zagreb'
     */
    const VALUE_EUROPE_ZAGREB = 'Europe/Zagreb';
    /**
     * Constant for value 'Europe/Zaporozhye'
     * @return string 'Europe/Zaporozhye'
     */
    const VALUE_EUROPE_ZAPOROZHYE = 'Europe/Zaporozhye';
    /**
     * Constant for value 'Europe/Zurich'
     * @return string 'Europe/Zurich'
     */
    const VALUE_EUROPE_ZURICH = 'Europe/Zurich';
    /**
     * Constant for value 'HST'
     * @return string 'HST'
     */
    const VALUE_HST = 'HST';
    /**
     * Constant for value 'Indian/Antananarivo'
     * @return string 'Indian/Antananarivo'
     */
    const VALUE_INDIAN_ANTANANARIVO = 'Indian/Antananarivo';
    /**
     * Constant for value 'Indian/Chagos'
     * @return string 'Indian/Chagos'
     */
    const VALUE_INDIAN_CHAGOS = 'Indian/Chagos';
    /**
     * Constant for value 'Indian/Christmas'
     * @return string 'Indian/Christmas'
     */
    const VALUE_INDIAN_CHRISTMAS = 'Indian/Christmas';
    /**
     * Constant for value 'Indian/Cocos'
     * @return string 'Indian/Cocos'
     */
    const VALUE_INDIAN_COCOS = 'Indian/Cocos';
    /**
     * Constant for value 'Indian/Comoro'
     * @return string 'Indian/Comoro'
     */
    const VALUE_INDIAN_COMORO = 'Indian/Comoro';
    /**
     * Constant for value 'Indian/Kerguelen'
     * @return string 'Indian/Kerguelen'
     */
    const VALUE_INDIAN_KERGUELEN = 'Indian/Kerguelen';
    /**
     * Constant for value 'Indian/Mahe'
     * @return string 'Indian/Mahe'
     */
    const VALUE_INDIAN_MAHE = 'Indian/Mahe';
    /**
     * Constant for value 'Indian/Maldives'
     * @return string 'Indian/Maldives'
     */
    const VALUE_INDIAN_MALDIVES = 'Indian/Maldives';
    /**
     * Constant for value 'Indian/Mauritius'
     * @return string 'Indian/Mauritius'
     */
    const VALUE_INDIAN_MAURITIUS = 'Indian/Mauritius';
    /**
     * Constant for value 'Indian/Mayotte'
     * @return string 'Indian/Mayotte'
     */
    const VALUE_INDIAN_MAYOTTE = 'Indian/Mayotte';
    /**
     * Constant for value 'Indian/Reunion'
     * @return string 'Indian/Reunion'
     */
    const VALUE_INDIAN_REUNION = 'Indian/Reunion';
    /**
     * Constant for value 'MET'
     * @return string 'MET'
     */
    const VALUE_MET = 'MET';
    /**
     * Constant for value 'Mideast/Riyadh87'
     * @return string 'Mideast/Riyadh87'
     */
    const VALUE_MIDEAST_RIYADH_87 = 'Mideast/Riyadh87';
    /**
     * Constant for value 'Mideast/Riyadh88'
     * @return string 'Mideast/Riyadh88'
     */
    const VALUE_MIDEAST_RIYADH_88 = 'Mideast/Riyadh88';
    /**
     * Constant for value 'Mideast/Riyadh89'
     * @return string 'Mideast/Riyadh89'
     */
    const VALUE_MIDEAST_RIYADH_89 = 'Mideast/Riyadh89';
    /**
     * Constant for value 'MST'
     * @return string 'MST'
     */
    const VALUE_MST = 'MST';
    /**
     * Constant for value 'MST7MDT'
     * @return string 'MST7MDT'
     */
    const VALUE_MST_7_MDT = 'MST7MDT';
    /**
     * Constant for value 'Pacific/Apia'
     * @return string 'Pacific/Apia'
     */
    const VALUE_PACIFIC_APIA = 'Pacific/Apia';
    /**
     * Constant for value 'Pacific/Auckland'
     * @return string 'Pacific/Auckland'
     */
    const VALUE_PACIFIC_AUCKLAND = 'Pacific/Auckland';
    /**
     * Constant for value 'Pacific/Chatham'
     * @return string 'Pacific/Chatham'
     */
    const VALUE_PACIFIC_CHATHAM = 'Pacific/Chatham';
    /**
     * Constant for value 'Pacific/Easter'
     * @return string 'Pacific/Easter'
     */
    const VALUE_PACIFIC_EASTER = 'Pacific/Easter';
    /**
     * Constant for value 'Pacific/Efate'
     * @return string 'Pacific/Efate'
     */
    const VALUE_PACIFIC_EFATE = 'Pacific/Efate';
    /**
     * Constant for value 'Pacific/Enderbury'
     * @return string 'Pacific/Enderbury'
     */
    const VALUE_PACIFIC_ENDERBURY = 'Pacific/Enderbury';
    /**
     * Constant for value 'Pacific/Fakaofo'
     * @return string 'Pacific/Fakaofo'
     */
    const VALUE_PACIFIC_FAKAOFO = 'Pacific/Fakaofo';
    /**
     * Constant for value 'Pacific/Fiji'
     * @return string 'Pacific/Fiji'
     */
    const VALUE_PACIFIC_FIJI = 'Pacific/Fiji';
    /**
     * Constant for value 'Pacific/Funafuti'
     * @return string 'Pacific/Funafuti'
     */
    const VALUE_PACIFIC_FUNAFUTI = 'Pacific/Funafuti';
    /**
     * Constant for value 'Pacific/Galapagos'
     * @return string 'Pacific/Galapagos'
     */
    const VALUE_PACIFIC_GALAPAGOS = 'Pacific/Galapagos';
    /**
     * Constant for value 'Pacific/Gambier'
     * @return string 'Pacific/Gambier'
     */
    const VALUE_PACIFIC_GAMBIER = 'Pacific/Gambier';
    /**
     * Constant for value 'Pacific/Guadalcanal'
     * @return string 'Pacific/Guadalcanal'
     */
    const VALUE_PACIFIC_GUADALCANAL = 'Pacific/Guadalcanal';
    /**
     * Constant for value 'Pacific/Guam'
     * @return string 'Pacific/Guam'
     */
    const VALUE_PACIFIC_GUAM = 'Pacific/Guam';
    /**
     * Constant for value 'Pacific/Honolulu'
     * @return string 'Pacific/Honolulu'
     */
    const VALUE_PACIFIC_HONOLULU = 'Pacific/Honolulu';
    /**
     * Constant for value 'Pacific/Johnston'
     * @return string 'Pacific/Johnston'
     */
    const VALUE_PACIFIC_JOHNSTON = 'Pacific/Johnston';
    /**
     * Constant for value 'Pacific/Kiritimati'
     * @return string 'Pacific/Kiritimati'
     */
    const VALUE_PACIFIC_KIRITIMATI = 'Pacific/Kiritimati';
    /**
     * Constant for value 'Pacific/Kosrae'
     * @return string 'Pacific/Kosrae'
     */
    const VALUE_PACIFIC_KOSRAE = 'Pacific/Kosrae';
    /**
     * Constant for value 'Pacific/Kwajalein'
     * @return string 'Pacific/Kwajalein'
     */
    const VALUE_PACIFIC_KWAJALEIN = 'Pacific/Kwajalein';
    /**
     * Constant for value 'Pacific/Majuro'
     * @return string 'Pacific/Majuro'
     */
    const VALUE_PACIFIC_MAJURO = 'Pacific/Majuro';
    /**
     * Constant for value 'Pacific/Marquesas'
     * @return string 'Pacific/Marquesas'
     */
    const VALUE_PACIFIC_MARQUESAS = 'Pacific/Marquesas';
    /**
     * Constant for value 'Pacific/Midway'
     * @return string 'Pacific/Midway'
     */
    const VALUE_PACIFIC_MIDWAY = 'Pacific/Midway';
    /**
     * Constant for value 'Pacific/Nauru'
     * @return string 'Pacific/Nauru'
     */
    const VALUE_PACIFIC_NAURU = 'Pacific/Nauru';
    /**
     * Constant for value 'Pacific/Niue'
     * @return string 'Pacific/Niue'
     */
    const VALUE_PACIFIC_NIUE = 'Pacific/Niue';
    /**
     * Constant for value 'Pacific/Norfolk'
     * @return string 'Pacific/Norfolk'
     */
    const VALUE_PACIFIC_NORFOLK = 'Pacific/Norfolk';
    /**
     * Constant for value 'Pacific/Noumea'
     * @return string 'Pacific/Noumea'
     */
    const VALUE_PACIFIC_NOUMEA = 'Pacific/Noumea';
    /**
     * Constant for value 'Pacific/Pago_Pago'
     * @return string 'Pacific/Pago_Pago'
     */
    const VALUE_PACIFIC_PAGO_PAGO = 'Pacific/Pago_Pago';
    /**
     * Constant for value 'Pacific/Palau'
     * @return string 'Pacific/Palau'
     */
    const VALUE_PACIFIC_PALAU = 'Pacific/Palau';
    /**
     * Constant for value 'Pacific/Pitcairn'
     * @return string 'Pacific/Pitcairn'
     */
    const VALUE_PACIFIC_PITCAIRN = 'Pacific/Pitcairn';
    /**
     * Constant for value 'Pacific/Ponape'
     * @return string 'Pacific/Ponape'
     */
    const VALUE_PACIFIC_PONAPE = 'Pacific/Ponape';
    /**
     * Constant for value 'Pacific/Port_Moresby'
     * @return string 'Pacific/Port_Moresby'
     */
    const VALUE_PACIFIC_PORT_MORESBY = 'Pacific/Port_Moresby';
    /**
     * Constant for value 'Pacific/Rarotonga'
     * @return string 'Pacific/Rarotonga'
     */
    const VALUE_PACIFIC_RAROTONGA = 'Pacific/Rarotonga';
    /**
     * Constant for value 'Pacific/Saipan'
     * @return string 'Pacific/Saipan'
     */
    const VALUE_PACIFIC_SAIPAN = 'Pacific/Saipan';
    /**
     * Constant for value 'Pacific/Tahiti'
     * @return string 'Pacific/Tahiti'
     */
    const VALUE_PACIFIC_TAHITI = 'Pacific/Tahiti';
    /**
     * Constant for value 'Pacific/Tarawa'
     * @return string 'Pacific/Tarawa'
     */
    const VALUE_PACIFIC_TARAWA = 'Pacific/Tarawa';
    /**
     * Constant for value 'Pacific/Tongatapu'
     * @return string 'Pacific/Tongatapu'
     */
    const VALUE_PACIFIC_TONGATAPU = 'Pacific/Tongatapu';
    /**
     * Constant for value 'Pacific/Truk'
     * @return string 'Pacific/Truk'
     */
    const VALUE_PACIFIC_TRUK = 'Pacific/Truk';
    /**
     * Constant for value 'Pacific/Wake'
     * @return string 'Pacific/Wake'
     */
    const VALUE_PACIFIC_WAKE = 'Pacific/Wake';
    /**
     * Constant for value 'Pacific/Wallis'
     * @return string 'Pacific/Wallis'
     */
    const VALUE_PACIFIC_WALLIS = 'Pacific/Wallis';
    /**
     * Constant for value 'PST8PDT'
     * @return string 'PST8PDT'
     */
    const VALUE_PST_8_PDT = 'PST8PDT';
    /**
     * Constant for value 'WET'
     * @return string 'WET'
     */
    const VALUE_WET = 'WET';
    /**
     * Return true if value is allowed
     * @uses self::getValidValues()
     * @param mixed $value value
     * @return bool true|false
     */
    public static function valueIsValid($value)
    {
        return ($value === null) || in_array($value, self::getValidValues(), true);
    }
    /**
     * Return allowed values
     * @uses self::VALUE_AFRICA_ABIDJAN
     * @uses self::VALUE_AFRICA_ACCRA
     * @uses self::VALUE_AFRICA_ADDIS_ABABA
     * @uses self::VALUE_AFRICA_ALGIERS
     * @uses self::VALUE_AFRICA_ASMARA
     * @uses self::VALUE_AFRICA_BAMAKO
     * @uses self::VALUE_AFRICA_BANGUI
     * @uses self::VALUE_AFRICA_BANJUL
     * @uses self::VALUE_AFRICA_BISSAU
     * @uses self::VALUE_AFRICA_BLANTYRE
     * @uses self::VALUE_AFRICA_BRAZZAVILLE
     * @uses self::VALUE_AFRICA_BUJUMBURA
     * @uses self::VALUE_AFRICA_CAIRO
     * @uses self::VALUE_AFRICA_CASABLANCA
     * @uses self::VALUE_AFRICA_CEUTA
     * @uses self::VALUE_AFRICA_CONAKRY
     * @uses self::VALUE_AFRICA_DAKAR
     * @uses self::VALUE_AFRICA_DAR_ES_SALAAM
     * @uses self::VALUE_AFRICA_DJIBOUTI
     * @uses self::VALUE_AFRICA_DOUALA
     * @uses self::VALUE_AFRICA_EL_AAIUN
     * @uses self::VALUE_AFRICA_FREETOWN
     * @uses self::VALUE_AFRICA_GABORONE
     * @uses self::VALUE_AFRICA_HARARE
     * @uses self::VALUE_AFRICA_JOHANNESBURG
     * @uses self::VALUE_AFRICA_KAMPALA
     * @uses self::VALUE_AFRICA_KHARTOUM
     * @uses self::VALUE_AFRICA_KIGALI
     * @uses self::VALUE_AFRICA_KINSHASA
     * @uses self::VALUE_AFRICA_LAGOS
     * @uses self::VALUE_AFRICA_LIBREVILLE
     * @uses self::VALUE_AFRICA_LOME
     * @uses self::VALUE_AFRICA_LUANDA
     * @uses self::VALUE_AFRICA_LUBUMBASHI
     * @uses self::VALUE_AFRICA_LUSAKA
     * @uses self::VALUE_AFRICA_MALABO
     * @uses self::VALUE_AFRICA_MAPUTO
     * @uses self::VALUE_AFRICA_MASERU
     * @uses self::VALUE_AFRICA_MBABANE
     * @uses self::VALUE_AFRICA_MOGADISHU
     * @uses self::VALUE_AFRICA_MONROVIA
     * @uses self::VALUE_AFRICA_NAIROBI
     * @uses self::VALUE_AFRICA_NDJAMENA
     * @uses self::VALUE_AFRICA_NIAMEY
     * @uses self::VALUE_AFRICA_NOUAKCHOTT
     * @uses self::VALUE_AFRICA_OUAGADOUGOU
     * @uses self::VALUE_AFRICA_PORTO_NOVO
     * @uses self::VALUE_AFRICA_SAO_TOME
     * @uses self::VALUE_AFRICA_TRIPOLI
     * @uses self::VALUE_AFRICA_TUNIS
     * @uses self::VALUE_AFRICA_WINDHOEK
     * @uses self::VALUE_AMERICA_ADAK
     * @uses self::VALUE_AMERICA_ANCHORAGE
     * @uses self::VALUE_AMERICA_ANGUILLA
     * @uses self::VALUE_AMERICA_ANTIGUA
     * @uses self::VALUE_AMERICA_ARAGUAINA
     * @uses self::VALUE_AMERICA_ARGENTINA_BUENOS_AIRES
     * @uses self::VALUE_AMERICA_ARGENTINA_CATAMARCA
     * @uses self::VALUE_AMERICA_ARGENTINA_CORDOBA
     * @uses self::VALUE_AMERICA_ARGENTINA_JUJUY
     * @uses self::VALUE_AMERICA_ARGENTINA_LA_RIOJA
     * @uses self::VALUE_AMERICA_ARGENTINA_MENDOZA
     * @uses self::VALUE_AMERICA_ARGENTINA_RIO_GALLEGOS
     * @uses self::VALUE_AMERICA_ARGENTINA_SALTA
     * @uses self::VALUE_AMERICA_ARGENTINA_SAN_JUAN
     * @uses self::VALUE_AMERICA_ARGENTINA_SAN_LUIS
     * @uses self::VALUE_AMERICA_ARGENTINA_TUCUMAN
     * @uses self::VALUE_AMERICA_ARGENTINA_USHUAIA
     * @uses self::VALUE_AMERICA_ARUBA
     * @uses self::VALUE_AMERICA_ASUNCION
     * @uses self::VALUE_AMERICA_ATIKOKAN
     * @uses self::VALUE_AMERICA_BAHIA
     * @uses self::VALUE_AMERICA_BARBADOS
     * @uses self::VALUE_AMERICA_BELEM
     * @uses self::VALUE_AMERICA_BELIZE
     * @uses self::VALUE_AMERICA_BLANC_SABLON
     * @uses self::VALUE_AMERICA_BOA_VISTA
     * @uses self::VALUE_AMERICA_BOGOTA
     * @uses self::VALUE_AMERICA_BOISE
     * @uses self::VALUE_AMERICA_CAMBRIDGE_BAY
     * @uses self::VALUE_AMERICA_CAMPO_GRANDE
     * @uses self::VALUE_AMERICA_CANCUN
     * @uses self::VALUE_AMERICA_CARACAS
     * @uses self::VALUE_AMERICA_CAYENNE
     * @uses self::VALUE_AMERICA_CAYMAN
     * @uses self::VALUE_AMERICA_CHICAGO
     * @uses self::VALUE_AMERICA_CHIHUAHUA
     * @uses self::VALUE_AMERICA_COSTA_RICA
     * @uses self::VALUE_AMERICA_CUIABA
     * @uses self::VALUE_AMERICA_CURACAO
     * @uses self::VALUE_AMERICA_DANMARKSHAVN
     * @uses self::VALUE_AMERICA_DAWSON
     * @uses self::VALUE_AMERICA_DAWSON_CREEK
     * @uses self::VALUE_AMERICA_DENVER
     * @uses self::VALUE_AMERICA_DETROIT
     * @uses self::VALUE_AMERICA_DOMINICA
     * @uses self::VALUE_AMERICA_EDMONTON
     * @uses self::VALUE_AMERICA_EIRUNEPE
     * @uses self::VALUE_AMERICA_EL_SALVADOR
     * @uses self::VALUE_AMERICA_FORTALEZA
     * @uses self::VALUE_AMERICA_GLACE_BAY
     * @uses self::VALUE_AMERICA_GODTHAB
     * @uses self::VALUE_AMERICA_GOOSE_BAY
     * @uses self::VALUE_AMERICA_GRAND_TURK
     * @uses self::VALUE_AMERICA_GRENADA
     * @uses self::VALUE_AMERICA_GUADELOUPE
     * @uses self::VALUE_AMERICA_GUATEMALA
     * @uses self::VALUE_AMERICA_GUAYAQUIL
     * @uses self::VALUE_AMERICA_GUYANA
     * @uses self::VALUE_AMERICA_HALIFAX
     * @uses self::VALUE_AMERICA_HAVANA
     * @uses self::VALUE_AMERICA_HERMOSILLO
     * @uses self::VALUE_AMERICA_INDIANA_INDIANAPOLIS
     * @uses self::VALUE_AMERICA_INDIANA_KNOX
     * @uses self::VALUE_AMERICA_INDIANA_MARENGO
     * @uses self::VALUE_AMERICA_INDIANA_PETERSBURG
     * @uses self::VALUE_AMERICA_INDIANA_TELL_CITY
     * @uses self::VALUE_AMERICA_INDIANA_VEVAY
     * @uses self::VALUE_AMERICA_INDIANA_VINCENNES
     * @uses self::VALUE_AMERICA_INDIANA_WINAMAC
     * @uses self::VALUE_AMERICA_INUVIK
     * @uses self::VALUE_AMERICA_IQALUIT
     * @uses self::VALUE_AMERICA_JAMAICA
     * @uses self::VALUE_AMERICA_JUNEAU
     * @uses self::VALUE_AMERICA_KENTUCKY_LOUISVILLE
     * @uses self::VALUE_AMERICA_KENTUCKY_MONTICELLO
     * @uses self::VALUE_AMERICA_LA_PAZ
     * @uses self::VALUE_AMERICA_LIMA
     * @uses self::VALUE_AMERICA_LOS_ANGELES
     * @uses self::VALUE_AMERICA_MACEIO
     * @uses self::VALUE_AMERICA_MANAGUA
     * @uses self::VALUE_AMERICA_MANAUS
     * @uses self::VALUE_AMERICA_MARIGOT
     * @uses self::VALUE_AMERICA_MARTINIQUE
     * @uses self::VALUE_AMERICA_MAZATLAN
     * @uses self::VALUE_AMERICA_MENOMINEE
     * @uses self::VALUE_AMERICA_MERIDA
     * @uses self::VALUE_AMERICA_MEXICO_CITY
     * @uses self::VALUE_AMERICA_MIQUELON
     * @uses self::VALUE_AMERICA_MONCTON
     * @uses self::VALUE_AMERICA_MONTERREY
     * @uses self::VALUE_AMERICA_MONTEVIDEO
     * @uses self::VALUE_AMERICA_MONTREAL
     * @uses self::VALUE_AMERICA_MONTSERRAT
     * @uses self::VALUE_AMERICA_NASSAU
     * @uses self::VALUE_AMERICA_NEW_YORK
     * @uses self::VALUE_AMERICA_NIPIGON
     * @uses self::VALUE_AMERICA_NOME
     * @uses self::VALUE_AMERICA_NORONHA
     * @uses self::VALUE_AMERICA_NORTH_DAKOTA_CENTER
     * @uses self::VALUE_AMERICA_NORTH_DAKOTA_NEW_SALEM
     * @uses self::VALUE_AMERICA_PANAMA
     * @uses self::VALUE_AMERICA_PANGNIRTUNG
     * @uses self::VALUE_AMERICA_PARAMARIBO
     * @uses self::VALUE_AMERICA_PHOENIX
     * @uses self::VALUE_AMERICA_PORT_AU_PRINCE
     * @uses self::VALUE_AMERICA_PORT_OF_SPAIN
     * @uses self::VALUE_AMERICA_PORTO_VELHO
     * @uses self::VALUE_AMERICA_PUERTO_RICO
     * @uses self::VALUE_AMERICA_RAINY_RIVER
     * @uses self::VALUE_AMERICA_RANKIN_INLET
     * @uses self::VALUE_AMERICA_RECIFE
     * @uses self::VALUE_AMERICA_REGINA
     * @uses self::VALUE_AMERICA_RESOLUTE
     * @uses self::VALUE_AMERICA_RIO_BRANCO
     * @uses self::VALUE_AMERICA_SANTAREM
     * @uses self::VALUE_AMERICA_SANTIAGO
     * @uses self::VALUE_AMERICA_SANTO_DOMINGO
     * @uses self::VALUE_AMERICA_SAO_PAULO
     * @uses self::VALUE_AMERICA_SCORESBYSUND
     * @uses self::VALUE_AMERICA_SHIPROCK
     * @uses self::VALUE_AMERICA_ST_BARTHELEMY
     * @uses self::VALUE_AMERICA_ST_JOHNS
     * @uses self::VALUE_AMERICA_ST_KITTS
     * @uses self::VALUE_AMERICA_ST_LUCIA
     * @uses self::VALUE_AMERICA_ST_THOMAS
     * @uses self::VALUE_AMERICA_ST_VINCENT
     * @uses self::VALUE_AMERICA_SWIFT_CURRENT
     * @uses self::VALUE_AMERICA_TEGUCIGALPA
     * @uses self::VALUE_AMERICA_THULE
     * @uses self::VALUE_AMERICA_THUNDER_BAY
     * @uses self::VALUE_AMERICA_TIJUANA
     * @uses self::VALUE_AMERICA_TORONTO
     * @uses self::VALUE_AMERICA_TORTOLA
     * @uses self::VALUE_AMERICA_VANCOUVER
     * @uses self::VALUE_AMERICA_WHITEHORSE
     * @uses self::VALUE_AMERICA_WINNIPEG
     * @uses self::VALUE_AMERICA_YAKUTAT
     * @uses self::VALUE_AMERICA_YELLOWKNIFE
     * @uses self::VALUE_ANTARCTICA_CASEY
     * @uses self::VALUE_ANTARCTICA_DAVIS
     * @uses self::VALUE_ANTARCTICA_DUMONT_DURVILLE
     * @uses self::VALUE_ANTARCTICA_MAWSON
     * @uses self::VALUE_ANTARCTICA_MC_MURDO
     * @uses self::VALUE_ANTARCTICA_PALMER
     * @uses self::VALUE_ANTARCTICA_ROTHERA
     * @uses self::VALUE_ANTARCTICA_SOUTH_POLE
     * @uses self::VALUE_ANTARCTICA_SYOWA
     * @uses self::VALUE_ANTARCTICA_VOSTOK
     * @uses self::VALUE_ARCTIC_LONGYEARBYEN
     * @uses self::VALUE_ASIA_ADEN
     * @uses self::VALUE_ASIA_ALMATY
     * @uses self::VALUE_ASIA_AMMAN
     * @uses self::VALUE_ASIA_ANADYR
     * @uses self::VALUE_ASIA_AQTAU
     * @uses self::VALUE_ASIA_AQTOBE
     * @uses self::VALUE_ASIA_ASHGABAT
     * @uses self::VALUE_ASIA_BAGHDAD
     * @uses self::VALUE_ASIA_BAHRAIN
     * @uses self::VALUE_ASIA_BAKU
     * @uses self::VALUE_ASIA_BANGKOK
     * @uses self::VALUE_ASIA_BEIRUT
     * @uses self::VALUE_ASIA_BISHKEK
     * @uses self::VALUE_ASIA_BRUNEI
     * @uses self::VALUE_ASIA_CHOIBALSAN
     * @uses self::VALUE_ASIA_CHONGQING
     * @uses self::VALUE_ASIA_COLOMBO
     * @uses self::VALUE_ASIA_DAMASCUS
     * @uses self::VALUE_ASIA_DHAKA
     * @uses self::VALUE_ASIA_DILI
     * @uses self::VALUE_ASIA_DUBAI
     * @uses self::VALUE_ASIA_DUSHANBE
     * @uses self::VALUE_ASIA_GAZA
     * @uses self::VALUE_ASIA_HARBIN
     * @uses self::VALUE_ASIA_HO_CHI_MINH
     * @uses self::VALUE_ASIA_HONG_KONG
     * @uses self::VALUE_ASIA_HOVD
     * @uses self::VALUE_ASIA_IRKUTSK
     * @uses self::VALUE_ASIA_ISTANBUL
     * @uses self::VALUE_ASIA_JAKARTA
     * @uses self::VALUE_ASIA_JAYAPURA
     * @uses self::VALUE_ASIA_JERUSALEM
     * @uses self::VALUE_ASIA_KABUL
     * @uses self::VALUE_ASIA_KAMCHATKA
     * @uses self::VALUE_ASIA_KARACHI
     * @uses self::VALUE_ASIA_KASHGAR
     * @uses self::VALUE_ASIA_KATHMANDU
     * @uses self::VALUE_ASIA_KOLKATA
     * @uses self::VALUE_ASIA_KRASNOYARSK
     * @uses self::VALUE_ASIA_KUALA_LUMPUR
     * @uses self::VALUE_ASIA_KUCHING
     * @uses self::VALUE_ASIA_KUWAIT
     * @uses self::VALUE_ASIA_MACAU
     * @uses self::VALUE_ASIA_MAGADAN
     * @uses self::VALUE_ASIA_MAKASSAR
     * @uses self::VALUE_ASIA_MANILA
     * @uses self::VALUE_ASIA_MUSCAT
     * @uses self::VALUE_ASIA_NICOSIA
     * @uses self::VALUE_ASIA_NOVOSIBIRSK
     * @uses self::VALUE_ASIA_OMSK
     * @uses self::VALUE_ASIA_ORAL
     * @uses self::VALUE_ASIA_PHNOM_PENH
     * @uses self::VALUE_ASIA_PONTIANAK
     * @uses self::VALUE_ASIA_PYONGYANG
     * @uses self::VALUE_ASIA_QATAR
     * @uses self::VALUE_ASIA_QYZYLORDA
     * @uses self::VALUE_ASIA_RANGOON
     * @uses self::VALUE_ASIA_RIYADH
     * @uses self::VALUE_ASIA_RIYADH_87
     * @uses self::VALUE_ASIA_RIYADH_88
     * @uses self::VALUE_ASIA_RIYADH_89
     * @uses self::VALUE_ASIA_SAKHALIN
     * @uses self::VALUE_ASIA_SAMARKAND
     * @uses self::VALUE_ASIA_SEOUL
     * @uses self::VALUE_ASIA_SHANGHAI
     * @uses self::VALUE_ASIA_SINGAPORE
     * @uses self::VALUE_ASIA_TAIPEI
     * @uses self::VALUE_ASIA_TASHKENT
     * @uses self::VALUE_ASIA_TBILISI
     * @uses self::VALUE_ASIA_TEHRAN
     * @uses self::VALUE_ASIA_THIMPHU
     * @uses self::VALUE_ASIA_TOKYO
     * @uses self::VALUE_ASIA_ULAANBAATAR
     * @uses self::VALUE_ASIA_URUMQI
     * @uses self::VALUE_ASIA_VIENTIANE
     * @uses self::VALUE_ASIA_VLADIVOSTOK
     * @uses self::VALUE_ASIA_YAKUTSK
     * @uses self::VALUE_ASIA_YEKATERINBURG
     * @uses self::VALUE_ASIA_YEREVAN
     * @uses self::VALUE_ATLANTIC_AZORES
     * @uses self::VALUE_ATLANTIC_BERMUDA
     * @uses self::VALUE_ATLANTIC_CANARY
     * @uses self::VALUE_ATLANTIC_CAPE_VERDE
     * @uses self::VALUE_ATLANTIC_FAROE
     * @uses self::VALUE_ATLANTIC_MADEIRA
     * @uses self::VALUE_ATLANTIC_REYKJAVIK
     * @uses self::VALUE_ATLANTIC_SOUTH_GEORGIA
     * @uses self::VALUE_ATLANTIC_STANLEY
     * @uses self::VALUE_ATLANTIC_ST_HELENA
     * @uses self::VALUE_AUSTRALIA_ADELAIDE
     * @uses self::VALUE_AUSTRALIA_BRISBANE
     * @uses self::VALUE_AUSTRALIA_BROKEN_HILL
     * @uses self::VALUE_AUSTRALIA_CURRIE
     * @uses self::VALUE_AUSTRALIA_DARWIN
     * @uses self::VALUE_AUSTRALIA_EUCLA
     * @uses self::VALUE_AUSTRALIA_HOBART
     * @uses self::VALUE_AUSTRALIA_LINDEMAN
     * @uses self::VALUE_AUSTRALIA_LORD_HOWE
     * @uses self::VALUE_AUSTRALIA_MELBOURNE
     * @uses self::VALUE_AUSTRALIA_PERTH
     * @uses self::VALUE_AUSTRALIA_SYDNEY
     * @uses self::VALUE_CET
     * @uses self::VALUE_CST_6_CDT
     * @uses self::VALUE_EET
     * @uses self::VALUE_EST
     * @uses self::VALUE_EST_5_EDT
     * @uses self::VALUE_ETC_GMT
     * @uses self::VALUE_ETC_GMT_0
     * @uses self::VALUE_ETC_GMT_0_1
     * @uses self::VALUE_ETC_GMT_0_2
     * @uses self::VALUE_ETC_GMT_1
     * @uses self::VALUE_ETC_GMT_1_1
     * @uses self::VALUE_ETC_GMT_10
     * @uses self::VALUE_ETC_GMT_10_1
     * @uses self::VALUE_ETC_GMT_11
     * @uses self::VALUE_ETC_GMT_11_1
     * @uses self::VALUE_ETC_GMT_12
     * @uses self::VALUE_ETC_GMT_12_1
     * @uses self::VALUE_ETC_GMT_13
     * @uses self::VALUE_ETC_GMT_14
     * @uses self::VALUE_ETC_GMT_2
     * @uses self::VALUE_ETC_GMT_2_1
     * @uses self::VALUE_ETC_GMT_3
     * @uses self::VALUE_ETC_GMT_3_1
     * @uses self::VALUE_ETC_GMT_4
     * @uses self::VALUE_ETC_GMT_4_1
     * @uses self::VALUE_ETC_GMT_5
     * @uses self::VALUE_ETC_GMT_5_1
     * @uses self::VALUE_ETC_GMT_6
     * @uses self::VALUE_ETC_GMT_6_1
     * @uses self::VALUE_ETC_GMT_7
     * @uses self::VALUE_ETC_GMT_7_1
     * @uses self::VALUE_ETC_GMT_8
     * @uses self::VALUE_ETC_GMT_8_1
     * @uses self::VALUE_ETC_GMT_9
     * @uses self::VALUE_ETC_GMT_9_1
     * @uses self::VALUE_ETC_GREENWICH
     * @uses self::VALUE_ETC_UCT
     * @uses self::VALUE_ETC_UNIVERSAL
     * @uses self::VALUE_ETC_UTC
     * @uses self::VALUE_ETC_ZULU
     * @uses self::VALUE_EUROPE_AMSTERDAM
     * @uses self::VALUE_EUROPE_ANDORRA
     * @uses self::VALUE_EUROPE_ATHENS
     * @uses self::VALUE_EUROPE_BELGRADE
     * @uses self::VALUE_EUROPE_BERLIN
     * @uses self::VALUE_EUROPE_BRATISLAVA
     * @uses self::VALUE_EUROPE_BRUSSELS
     * @uses self::VALUE_EUROPE_BUCHAREST
     * @uses self::VALUE_EUROPE_BUDAPEST
     * @uses self::VALUE_EUROPE_CHISINAU
     * @uses self::VALUE_EUROPE_COPENHAGEN
     * @uses self::VALUE_EUROPE_DUBLIN
     * @uses self::VALUE_EUROPE_GIBRALTAR
     * @uses self::VALUE_EUROPE_GUERNSEY
     * @uses self::VALUE_EUROPE_HELSINKI
     * @uses self::VALUE_EUROPE_ISLE_OF_MAN
     * @uses self::VALUE_EUROPE_ISTANBUL
     * @uses self::VALUE_EUROPE_JERSEY
     * @uses self::VALUE_EUROPE_KALININGRAD
     * @uses self::VALUE_EUROPE_KIEV
     * @uses self::VALUE_EUROPE_LISBON
     * @uses self::VALUE_EUROPE_LJUBLJANA
     * @uses self::VALUE_EUROPE_LONDON
     * @uses self::VALUE_EUROPE_LUXEMBOURG
     * @uses self::VALUE_EUROPE_MADRID
     * @uses self::VALUE_EUROPE_MALTA
     * @uses self::VALUE_EUROPE_MARIEHAMN
     * @uses self::VALUE_EUROPE_MINSK
     * @uses self::VALUE_EUROPE_MONACO
     * @uses self::VALUE_EUROPE_MOSCOW
     * @uses self::VALUE_EUROPE_NICOSIA
     * @uses self::VALUE_EUROPE_OSLO
     * @uses self::VALUE_EUROPE_PARIS
     * @uses self::VALUE_EUROPE_PODGORICA
     * @uses self::VALUE_EUROPE_PRAGUE
     * @uses self::VALUE_EUROPE_RIGA
     * @uses self::VALUE_EUROPE_ROME
     * @uses self::VALUE_EUROPE_SAMARA
     * @uses self::VALUE_EUROPE_SAN_MARINO
     * @uses self::VALUE_EUROPE_SARAJEVO
     * @uses self::VALUE_EUROPE_SIMFEROPOL
     * @uses self::VALUE_EUROPE_SKOPJE
     * @uses self::VALUE_EUROPE_SOFIA
     * @uses self::VALUE_EUROPE_STOCKHOLM
     * @uses self::VALUE_EUROPE_TALLINN
     * @uses self::VALUE_EUROPE_TIRANE
     * @uses self::VALUE_EUROPE_UZHGOROD
     * @uses self::VALUE_EUROPE_VADUZ
     * @uses self::VALUE_EUROPE_VATICAN
     * @uses self::VALUE_EUROPE_VIENNA
     * @uses self::VALUE_EUROPE_VILNIUS
     * @uses self::VALUE_EUROPE_VOLGOGRAD
     * @uses self::VALUE_EUROPE_WARSAW
     * @uses self::VALUE_EUROPE_ZAGREB
     * @uses self::VALUE_EUROPE_ZAPOROZHYE
     * @uses self::VALUE_EUROPE_ZURICH
     * @uses self::VALUE_HST
     * @uses self::VALUE_INDIAN_ANTANANARIVO
     * @uses self::VALUE_INDIAN_CHAGOS
     * @uses self::VALUE_INDIAN_CHRISTMAS
     * @uses self::VALUE_INDIAN_COCOS
     * @uses self::VALUE_INDIAN_COMORO
     * @uses self::VALUE_INDIAN_KERGUELEN
     * @uses self::VALUE_INDIAN_MAHE
     * @uses self::VALUE_INDIAN_MALDIVES
     * @uses self::VALUE_INDIAN_MAURITIUS
     * @uses self::VALUE_INDIAN_MAYOTTE
     * @uses self::VALUE_INDIAN_REUNION
     * @uses self::VALUE_MET
     * @uses self::VALUE_MIDEAST_RIYADH_87
     * @uses self::VALUE_MIDEAST_RIYADH_88
     * @uses self::VALUE_MIDEAST_RIYADH_89
     * @uses self::VALUE_MST
     * @uses self::VALUE_MST_7_MDT
     * @uses self::VALUE_PACIFIC_APIA
     * @uses self::VALUE_PACIFIC_AUCKLAND
     * @uses self::VALUE_PACIFIC_CHATHAM
     * @uses self::VALUE_PACIFIC_EASTER
     * @uses self::VALUE_PACIFIC_EFATE
     * @uses self::VALUE_PACIFIC_ENDERBURY
     * @uses self::VALUE_PACIFIC_FAKAOFO
     * @uses self::VALUE_PACIFIC_FIJI
     * @uses self::VALUE_PACIFIC_FUNAFUTI
     * @uses self::VALUE_PACIFIC_GALAPAGOS
     * @uses self::VALUE_PACIFIC_GAMBIER
     * @uses self::VALUE_PACIFIC_GUADALCANAL
     * @uses self::VALUE_PACIFIC_GUAM
     * @uses self::VALUE_PACIFIC_HONOLULU
     * @uses self::VALUE_PACIFIC_JOHNSTON
     * @uses self::VALUE_PACIFIC_KIRITIMATI
     * @uses self::VALUE_PACIFIC_KOSRAE
     * @uses self::VALUE_PACIFIC_KWAJALEIN
     * @uses self::VALUE_PACIFIC_MAJURO
     * @uses self::VALUE_PACIFIC_MARQUESAS
     * @uses self::VALUE_PACIFIC_MIDWAY
     * @uses self::VALUE_PACIFIC_NAURU
     * @uses self::VALUE_PACIFIC_NIUE
     * @uses self::VALUE_PACIFIC_NORFOLK
     * @uses self::VALUE_PACIFIC_NOUMEA
     * @uses self::VALUE_PACIFIC_PAGO_PAGO
     * @uses self::VALUE_PACIFIC_PALAU
     * @uses self::VALUE_PACIFIC_PITCAIRN
     * @uses self::VALUE_PACIFIC_PONAPE
     * @uses self::VALUE_PACIFIC_PORT_MORESBY
     * @uses self::VALUE_PACIFIC_RAROTONGA
     * @uses self::VALUE_PACIFIC_SAIPAN
     * @uses self::VALUE_PACIFIC_TAHITI
     * @uses self::VALUE_PACIFIC_TARAWA
     * @uses self::VALUE_PACIFIC_TONGATAPU
     * @uses self::VALUE_PACIFIC_TRUK
     * @uses self::VALUE_PACIFIC_WAKE
     * @uses self::VALUE_PACIFIC_WALLIS
     * @uses self::VALUE_PST_8_PDT
     * @uses self::VALUE_WET
     * @return string[]
     */
    public static function getValidValues()
    {
        return array(
            self::VALUE_AFRICA_ABIDJAN,
            self::VALUE_AFRICA_ACCRA,
            self::VALUE_AFRICA_ADDIS_ABABA,
            self::VALUE_AFRICA_ALGIERS,
            self::VALUE_AFRICA_ASMARA,
            self::VALUE_AFRICA_BAMAKO,
            self::VALUE_AFRICA_BANGUI,
            self::VALUE_AFRICA_BANJUL,
            self::VALUE_AFRICA_BISSAU,
            self::VALUE_AFRICA_BLANTYRE,
            self::VALUE_AFRICA_BRAZZAVILLE,
            self::VALUE_AFRICA_BUJUMBURA,
            self::VALUE_AFRICA_CAIRO,
            self::VALUE_AFRICA_CASABLANCA,
            self::VALUE_AFRICA_CEUTA,
            self::VALUE_AFRICA_CONAKRY,
            self::VALUE_AFRICA_DAKAR,
            self::VALUE_AFRICA_DAR_ES_SALAAM,
            self::VALUE_AFRICA_DJIBOUTI,
            self::VALUE_AFRICA_DOUALA,
            self::VALUE_AFRICA_EL_AAIUN,
            self::VALUE_AFRICA_FREETOWN,
            self::VALUE_AFRICA_GABORONE,
            self::VALUE_AFRICA_HARARE,
            self::VALUE_AFRICA_JOHANNESBURG,
            self::VALUE_AFRICA_KAMPALA,
            self::VALUE_AFRICA_KHARTOUM,
            self::VALUE_AFRICA_KIGALI,
            self::VALUE_AFRICA_KINSHASA,
            self::VALUE_AFRICA_LAGOS,
            self::VALUE_AFRICA_LIBREVILLE,
            self::VALUE_AFRICA_LOME,
            self::VALUE_AFRICA_LUANDA,
            self::VALUE_AFRICA_LUBUMBASHI,
            self::VALUE_AFRICA_LUSAKA,
            self::VALUE_AFRICA_MALABO,
            self::VALUE_AFRICA_MAPUTO,
            self::VALUE_AFRICA_MASERU,
            self::VALUE_AFRICA_MBABANE,
            self::VALUE_AFRICA_MOGADISHU,
            self::VALUE_AFRICA_MONROVIA,
            self::VALUE_AFRICA_NAIROBI,
            self::VALUE_AFRICA_NDJAMENA,
            self::VALUE_AFRICA_NIAMEY,
            self::VALUE_AFRICA_NOUAKCHOTT,
            self::VALUE_AFRICA_OUAGADOUGOU,
            self::VALUE_AFRICA_PORTO_NOVO,
            self::VALUE_AFRICA_SAO_TOME,
            self::VALUE_AFRICA_TRIPOLI,
            self::VALUE_AFRICA_TUNIS,
            self::VALUE_AFRICA_WINDHOEK,
            self::VALUE_AMERICA_ADAK,
            self::VALUE_AMERICA_ANCHORAGE,
            self::VALUE_AMERICA_ANGUILLA,
            self::VALUE_AMERICA_ANTIGUA,
            self::VALUE_AMERICA_ARAGUAINA,
            self::VALUE_AMERICA_ARGENTINA_BUENOS_AIRES,
            self::VALUE_AMERICA_ARGENTINA_CATAMARCA,
            self::VALUE_AMERICA_ARGENTINA_CORDOBA,
            self::VALUE_AMERICA_ARGENTINA_JUJUY,
            self::VALUE_AMERICA_ARGENTINA_LA_RIOJA,
            self::VALUE_AMERICA_ARGENTINA_MENDOZA,
            self::VALUE_AMERICA_ARGENTINA_RIO_GALLEGOS,
            self::VALUE_AMERICA_ARGENTINA_SALTA,
            self::VALUE_AMERICA_ARGENTINA_SAN_JUAN,
            self::VALUE_AMERICA_ARGENTINA_SAN_LUIS,
            self::VALUE_AMERICA_ARGENTINA_TUCUMAN,
            self::VALUE_AMERICA_ARGENTINA_USHUAIA,
            self::VALUE_AMERICA_ARUBA,
            self::VALUE_AMERICA_ASUNCION,
            self::VALUE_AMERICA_ATIKOKAN,
            self::VALUE_AMERICA_BAHIA,
            self::VALUE_AMERICA_BARBADOS,
            self::VALUE_AMERICA_BELEM,
            self::VALUE_AMERICA_BELIZE,
            self::VALUE_AMERICA_BLANC_SABLON,
            self::VALUE_AMERICA_BOA_VISTA,
            self::VALUE_AMERICA_BOGOTA,
            self::VALUE_AMERICA_BOISE,
            self::VALUE_AMERICA_CAMBRIDGE_BAY,
            self::VALUE_AMERICA_CAMPO_GRANDE,
            self::VALUE_AMERICA_CANCUN,
            self::VALUE_AMERICA_CARACAS,
            self::VALUE_AMERICA_CAYENNE,
            self::VALUE_AMERICA_CAYMAN,
            self::VALUE_AMERICA_CHICAGO,
            self::VALUE_AMERICA_CHIHUAHUA,
            self::VALUE_AMERICA_COSTA_RICA,
            self::VALUE_AMERICA_CUIABA,
            self::VALUE_AMERICA_CURACAO,
            self::VALUE_AMERICA_DANMARKSHAVN,
            self::VALUE_AMERICA_DAWSON,
            self::VALUE_AMERICA_DAWSON_CREEK,
            self::VALUE_AMERICA_DENVER,
            self::VALUE_AMERICA_DETROIT,
            self::VALUE_AMERICA_DOMINICA,
            self::VALUE_AMERICA_EDMONTON,
            self::VALUE_AMERICA_EIRUNEPE,
            self::VALUE_AMERICA_EL_SALVADOR,
            self::VALUE_AMERICA_FORTALEZA,
            self::VALUE_AMERICA_GLACE_BAY,
            self::VALUE_AMERICA_GODTHAB,
            self::VALUE_AMERICA_GOOSE_BAY,
            self::VALUE_AMERICA_GRAND_TURK,
            self::VALUE_AMERICA_GRENADA,
            self::VALUE_AMERICA_GUADELOUPE,
            self::VALUE_AMERICA_GUATEMALA,
            self::VALUE_AMERICA_GUAYAQUIL,
            self::VALUE_AMERICA_GUYANA,
            self::VALUE_AMERICA_HALIFAX,
            self::VALUE_AMERICA_HAVANA,
            self::VALUE_AMERICA_HERMOSILLO,
            self::VALUE_AMERICA_INDIANA_INDIANAPOLIS,
            self::VALUE_AMERICA_INDIANA_KNOX,
            self::VALUE_AMERICA_INDIANA_MARENGO,
            self::VALUE_AMERICA_INDIANA_PETERSBURG,
            self::VALUE_AMERICA_INDIANA_TELL_CITY,
            self::VALUE_AMERICA_INDIANA_VEVAY,
            self::VALUE_AMERICA_INDIANA_VINCENNES,
            self::VALUE_AMERICA_INDIANA_WINAMAC,
            self::VALUE_AMERICA_INUVIK,
            self::VALUE_AMERICA_IQALUIT,
            self::VALUE_AMERICA_JAMAICA,
            self::VALUE_AMERICA_JUNEAU,
            self::VALUE_AMERICA_KENTUCKY_LOUISVILLE,
            self::VALUE_AMERICA_KENTUCKY_MONTICELLO,
            self::VALUE_AMERICA_LA_PAZ,
            self::VALUE_AMERICA_LIMA,
            self::VALUE_AMERICA_LOS_ANGELES,
            self::VALUE_AMERICA_MACEIO,
            self::VALUE_AMERICA_MANAGUA,
            self::VALUE_AMERICA_MANAUS,
            self::VALUE_AMERICA_MARIGOT,
            self::VALUE_AMERICA_MARTINIQUE,
            self::VALUE_AMERICA_MAZATLAN,
            self::VALUE_AMERICA_MENOMINEE,
            self::VALUE_AMERICA_MERIDA,
            self::VALUE_AMERICA_MEXICO_CITY,
            self::VALUE_AMERICA_MIQUELON,
            self::VALUE_AMERICA_MONCTON,
            self::VALUE_AMERICA_MONTERREY,
            self::VALUE_AMERICA_MONTEVIDEO,
            self::VALUE_AMERICA_MONTREAL,
            self::VALUE_AMERICA_MONTSERRAT,
            self::VALUE_AMERICA_NASSAU,
            self::VALUE_AMERICA_NEW_YORK,
            self::VALUE_AMERICA_NIPIGON,
            self::VALUE_AMERICA_NOME,
            self::VALUE_AMERICA_NORONHA,
            self::VALUE_AMERICA_NORTH_DAKOTA_CENTER,
            self::VALUE_AMERICA_NORTH_DAKOTA_NEW_SALEM,
            self::VALUE_AMERICA_PANAMA,
            self::VALUE_AMERICA_PANGNIRTUNG,
            self::VALUE_AMERICA_PARAMARIBO,
            self::VALUE_AMERICA_PHOENIX,
            self::VALUE_AMERICA_PORT_AU_PRINCE,
            self::VALUE_AMERICA_PORT_OF_SPAIN,
            self::VALUE_AMERICA_PORTO_VELHO,
            self::VALUE_AMERICA_PUERTO_RICO,
            self::VALUE_AMERICA_RAINY_RIVER,
            self::VALUE_AMERICA_RANKIN_INLET,
            self::VALUE_AMERICA_RECIFE,
            self::VALUE_AMERICA_REGINA,
            self::VALUE_AMERICA_RESOLUTE,
            self::VALUE_AMERICA_RIO_BRANCO,
            self::VALUE_AMERICA_SANTAREM,
            self::VALUE_AMERICA_SANTIAGO,
            self::VALUE_AMERICA_SANTO_DOMINGO,
            self::VALUE_AMERICA_SAO_PAULO,
            self::VALUE_AMERICA_SCORESBYSUND,
            self::VALUE_AMERICA_SHIPROCK,
            self::VALUE_AMERICA_ST_BARTHELEMY,
            self::VALUE_AMERICA_ST_JOHNS,
            self::VALUE_AMERICA_ST_KITTS,
            self::VALUE_AMERICA_ST_LUCIA,
            self::VALUE_AMERICA_ST_THOMAS,
            self::VALUE_AMERICA_ST_VINCENT,
            self::VALUE_AMERICA_SWIFT_CURRENT,
            self::VALUE_AMERICA_TEGUCIGALPA,
            self::VALUE_AMERICA_THULE,
            self::VALUE_AMERICA_THUNDER_BAY,
            self::VALUE_AMERICA_TIJUANA,
            self::VALUE_AMERICA_TORONTO,
            self::VALUE_AMERICA_TORTOLA,
            self::VALUE_AMERICA_VANCOUVER,
            self::VALUE_AMERICA_WHITEHORSE,
            self::VALUE_AMERICA_WINNIPEG,
            self::VALUE_AMERICA_YAKUTAT,
            self::VALUE_AMERICA_YELLOWKNIFE,
            self::VALUE_ANTARCTICA_CASEY,
            self::VALUE_ANTARCTICA_DAVIS,
            self::VALUE_ANTARCTICA_DUMONT_DURVILLE,
            self::VALUE_ANTARCTICA_MAWSON,
            self::VALUE_ANTARCTICA_MC_MURDO,
            self::VALUE_ANTARCTICA_PALMER,
            self::VALUE_ANTARCTICA_ROTHERA,
            self::VALUE_ANTARCTICA_SOUTH_POLE,
            self::VALUE_ANTARCTICA_SYOWA,
            self::VALUE_ANTARCTICA_VOSTOK,
            self::VALUE_ARCTIC_LONGYEARBYEN,
            self::VALUE_ASIA_ADEN,
            self::VALUE_ASIA_ALMATY,
            self::VALUE_ASIA_AMMAN,
            self::VALUE_ASIA_ANADYR,
            self::VALUE_ASIA_AQTAU,
            self::VALUE_ASIA_AQTOBE,
            self::VALUE_ASIA_ASHGABAT,
            self::VALUE_ASIA_BAGHDAD,
            self::VALUE_ASIA_BAHRAIN,
            self::VALUE_ASIA_BAKU,
            self::VALUE_ASIA_BANGKOK,
            self::VALUE_ASIA_BEIRUT,
            self::VALUE_ASIA_BISHKEK,
            self::VALUE_ASIA_BRUNEI,
            self::VALUE_ASIA_CHOIBALSAN,
            self::VALUE_ASIA_CHONGQING,
            self::VALUE_ASIA_COLOMBO,
            self::VALUE_ASIA_DAMASCUS,
            self::VALUE_ASIA_DHAKA,
            self::VALUE_ASIA_DILI,
            self::VALUE_ASIA_DUBAI,
            self::VALUE_ASIA_DUSHANBE,
            self::VALUE_ASIA_GAZA,
            self::VALUE_ASIA_HARBIN,
            self::VALUE_ASIA_HO_CHI_MINH,
            self::VALUE_ASIA_HONG_KONG,
            self::VALUE_ASIA_HOVD,
            self::VALUE_ASIA_IRKUTSK,
            self::VALUE_ASIA_ISTANBUL,
            self::VALUE_ASIA_JAKARTA,
            self::VALUE_ASIA_JAYAPURA,
            self::VALUE_ASIA_JERUSALEM,
            self::VALUE_ASIA_KABUL,
            self::VALUE_ASIA_KAMCHATKA,
            self::VALUE_ASIA_KARACHI,
            self::VALUE_ASIA_KASHGAR,
            self::VALUE_ASIA_KATHMANDU,
            self::VALUE_ASIA_KOLKATA,
            self::VALUE_ASIA_KRASNOYARSK,
            self::VALUE_ASIA_KUALA_LUMPUR,
            self::VALUE_ASIA_KUCHING,
            self::VALUE_ASIA_KUWAIT,
            self::VALUE_ASIA_MACAU,
            self::VALUE_ASIA_MAGADAN,
            self::VALUE_ASIA_MAKASSAR,
            self::VALUE_ASIA_MANILA,
            self::VALUE_ASIA_MUSCAT,
            self::VALUE_ASIA_NICOSIA,
            self::VALUE_ASIA_NOVOSIBIRSK,
            self::VALUE_ASIA_OMSK,
            self::VALUE_ASIA_ORAL,
            self::VALUE_ASIA_PHNOM_PENH,
            self::VALUE_ASIA_PONTIANAK,
            self::VALUE_ASIA_PYONGYANG,
            self::VALUE_ASIA_QATAR,
            self::VALUE_ASIA_QYZYLORDA,
            self::VALUE_ASIA_RANGOON,
            self::VALUE_ASIA_RIYADH,
            self::VALUE_ASIA_RIYADH_87,
            self::VALUE_ASIA_RIYADH_88,
            self::VALUE_ASIA_RIYADH_89,
            self::VALUE_ASIA_SAKHALIN,
            self::VALUE_ASIA_SAMARKAND,
            self::VALUE_ASIA_SEOUL,
            self::VALUE_ASIA_SHANGHAI,
            self::VALUE_ASIA_SINGAPORE,
            self::VALUE_ASIA_TAIPEI,
            self::VALUE_ASIA_TASHKENT,
            self::VALUE_ASIA_TBILISI,
            self::VALUE_ASIA_TEHRAN,
            self::VALUE_ASIA_THIMPHU,
            self::VALUE_ASIA_TOKYO,
            self::VALUE_ASIA_ULAANBAATAR,
            self::VALUE_ASIA_URUMQI,
            self::VALUE_ASIA_VIENTIANE,
            self::VALUE_ASIA_VLADIVOSTOK,
            self::VALUE_ASIA_YAKUTSK,
            self::VALUE_ASIA_YEKATERINBURG,
            self::VALUE_ASIA_YEREVAN,
            self::VALUE_ATLANTIC_AZORES,
            self::VALUE_ATLANTIC_BERMUDA,
            self::VALUE_ATLANTIC_CANARY,
            self::VALUE_ATLANTIC_CAPE_VERDE,
            self::VALUE_ATLANTIC_FAROE,
            self::VALUE_ATLANTIC_MADEIRA,
            self::VALUE_ATLANTIC_REYKJAVIK,
            self::VALUE_ATLANTIC_SOUTH_GEORGIA,
            self::VALUE_ATLANTIC_STANLEY,
            self::VALUE_ATLANTIC_ST_HELENA,
            self::VALUE_AUSTRALIA_ADELAIDE,
            self::VALUE_AUSTRALIA_BRISBANE,
            self::VALUE_AUSTRALIA_BROKEN_HILL,
            self::VALUE_AUSTRALIA_CURRIE,
            self::VALUE_AUSTRALIA_DARWIN,
            self::VALUE_AUSTRALIA_EUCLA,
            self::VALUE_AUSTRALIA_HOBART,
            self::VALUE_AUSTRALIA_LINDEMAN,
            self::VALUE_AUSTRALIA_LORD_HOWE,
            self::VALUE_AUSTRALIA_MELBOURNE,
            self::VALUE_AUSTRALIA_PERTH,
            self::VALUE_AUSTRALIA_SYDNEY,
            self::VALUE_CET,
            self::VALUE_CST_6_CDT,
            self::VALUE_EET,
            self::VALUE_EST,
            self::VALUE_EST_5_EDT,
            self::VALUE_ETC_GMT,
            self::VALUE_ETC_GMT_0,
            self::VALUE_ETC_GMT_0_1,
            self::VALUE_ETC_GMT_0_2,
            self::VALUE_ETC_GMT_1,
            self::VALUE_ETC_GMT_1_1,
            self::VALUE_ETC_GMT_10,
            self::VALUE_ETC_GMT_10_1,
            self::VALUE_ETC_GMT_11,
            self::VALUE_ETC_GMT_11_1,
            self::VALUE_ETC_GMT_12,
            self::VALUE_ETC_GMT_12_1,
            self::VALUE_ETC_GMT_13,
            self::VALUE_ETC_GMT_14,
            self::VALUE_ETC_GMT_2,
            self::VALUE_ETC_GMT_2_1,
            self::VALUE_ETC_GMT_3,
            self::VALUE_ETC_GMT_3_1,
            self::VALUE_ETC_GMT_4,
            self::VALUE_ETC_GMT_4_1,
            self::VALUE_ETC_GMT_5,
            self::VALUE_ETC_GMT_5_1,
            self::VALUE_ETC_GMT_6,
            self::VALUE_ETC_GMT_6_1,
            self::VALUE_ETC_GMT_7,
            self::VALUE_ETC_GMT_7_1,
            self::VALUE_ETC_GMT_8,
            self::VALUE_ETC_GMT_8_1,
            self::VALUE_ETC_GMT_9,
            self::VALUE_ETC_GMT_9_1,
            self::VALUE_ETC_GREENWICH,
            self::VALUE_ETC_UCT,
            self::VALUE_ETC_UNIVERSAL,
            self::VALUE_ETC_UTC,
            self::VALUE_ETC_ZULU,
            self::VALUE_EUROPE_AMSTERDAM,
            self::VALUE_EUROPE_ANDORRA,
            self::VALUE_EUROPE_ATHENS,
            self::VALUE_EUROPE_BELGRADE,
            self::VALUE_EUROPE_BERLIN,
            self::VALUE_EUROPE_BRATISLAVA,
            self::VALUE_EUROPE_BRUSSELS,
            self::VALUE_EUROPE_BUCHAREST,
            self::VALUE_EUROPE_BUDAPEST,
            self::VALUE_EUROPE_CHISINAU,
            self::VALUE_EUROPE_COPENHAGEN,
            self::VALUE_EUROPE_DUBLIN,
            self::VALUE_EUROPE_GIBRALTAR,
            self::VALUE_EUROPE_GUERNSEY,
            self::VALUE_EUROPE_HELSINKI,
            self::VALUE_EUROPE_ISLE_OF_MAN,
            self::VALUE_EUROPE_ISTANBUL,
            self::VALUE_EUROPE_JERSEY,
            self::VALUE_EUROPE_KALININGRAD,
            self::VALUE_EUROPE_KIEV,
            self::VALUE_EUROPE_LISBON,
            self::VALUE_EUROPE_LJUBLJANA,
            self::VALUE_EUROPE_LONDON,
            self::VALUE_EUROPE_LUXEMBOURG,
            self::VALUE_EUROPE_MADRID,
            self::VALUE_EUROPE_MALTA,
            self::VALUE_EUROPE_MARIEHAMN,
            self::VALUE_EUROPE_MINSK,
            self::VALUE_EUROPE_MONACO,
            self::VALUE_EUROPE_MOSCOW,
            self::VALUE_EUROPE_NICOSIA,
            self::VALUE_EUROPE_OSLO,
            self::VALUE_EUROPE_PARIS,
            self::VALUE_EUROPE_PODGORICA,
            self::VALUE_EUROPE_PRAGUE,
            self::VALUE_EUROPE_RIGA,
            self::VALUE_EUROPE_ROME,
            self::VALUE_EUROPE_SAMARA,
            self::VALUE_EUROPE_SAN_MARINO,
            self::VALUE_EUROPE_SARAJEVO,
            self::VALUE_EUROPE_SIMFEROPOL,
            self::VALUE_EUROPE_SKOPJE,
            self::VALUE_EUROPE_SOFIA,
            self::VALUE_EUROPE_STOCKHOLM,
            self::VALUE_EUROPE_TALLINN,
            self::VALUE_EUROPE_TIRANE,
            self::VALUE_EUROPE_UZHGOROD,
            self::VALUE_EUROPE_VADUZ,
            self::VALUE_EUROPE_VATICAN,
            self::VALUE_EUROPE_VIENNA,
            self::VALUE_EUROPE_VILNIUS,
            self::VALUE_EUROPE_VOLGOGRAD,
            self::VALUE_EUROPE_WARSAW,
            self::VALUE_EUROPE_ZAGREB,
            self::VALUE_EUROPE_ZAPOROZHYE,
            self::VALUE_EUROPE_ZURICH,
            self::VALUE_HST,
            self::VALUE_INDIAN_ANTANANARIVO,
            self::VALUE_INDIAN_CHAGOS,
            self::VALUE_INDIAN_CHRISTMAS,
            self::VALUE_INDIAN_COCOS,
            self::VALUE_INDIAN_COMORO,
            self::VALUE_INDIAN_KERGUELEN,
            self::VALUE_INDIAN_MAHE,
            self::VALUE_INDIAN_MALDIVES,
            self::VALUE_INDIAN_MAURITIUS,
            self::VALUE_INDIAN_MAYOTTE,
            self::VALUE_INDIAN_REUNION,
            self::VALUE_MET,
            self::VALUE_MIDEAST_RIYADH_87,
            self::VALUE_MIDEAST_RIYADH_88,
            self::VALUE_MIDEAST_RIYADH_89,
            self::VALUE_MST,
            self::VALUE_MST_7_MDT,
            self::VALUE_PACIFIC_APIA,
            self::VALUE_PACIFIC_AUCKLAND,
            self::VALUE_PACIFIC_CHATHAM,
            self::VALUE_PACIFIC_EASTER,
            self::VALUE_PACIFIC_EFATE,
            self::VALUE_PACIFIC_ENDERBURY,
            self::VALUE_PACIFIC_FAKAOFO,
            self::VALUE_PACIFIC_FIJI,
            self::VALUE_PACIFIC_FUNAFUTI,
            self::VALUE_PACIFIC_GALAPAGOS,
            self::VALUE_PACIFIC_GAMBIER,
            self::VALUE_PACIFIC_GUADALCANAL,
            self::VALUE_PACIFIC_GUAM,
            self::VALUE_PACIFIC_HONOLULU,
            self::VALUE_PACIFIC_JOHNSTON,
            self::VALUE_PACIFIC_KIRITIMATI,
            self::VALUE_PACIFIC_KOSRAE,
            self::VALUE_PACIFIC_KWAJALEIN,
            self::VALUE_PACIFIC_MAJURO,
            self::VALUE_PACIFIC_MARQUESAS,
            self::VALUE_PACIFIC_MIDWAY,
            self::VALUE_PACIFIC_NAURU,
            self::VALUE_PACIFIC_NIUE,
            self::VALUE_PACIFIC_NORFOLK,
            self::VALUE_PACIFIC_NOUMEA,
            self::VALUE_PACIFIC_PAGO_PAGO,
            self::VALUE_PACIFIC_PALAU,
            self::VALUE_PACIFIC_PITCAIRN,
            self::VALUE_PACIFIC_PONAPE,
            self::VALUE_PACIFIC_PORT_MORESBY,
            self::VALUE_PACIFIC_RAROTONGA,
            self::VALUE_PACIFIC_SAIPAN,
            self::VALUE_PACIFIC_TAHITI,
            self::VALUE_PACIFIC_TARAWA,
            self::VALUE_PACIFIC_TONGATAPU,
            self::VALUE_PACIFIC_TRUK,
            self::VALUE_PACIFIC_WAKE,
            self::VALUE_PACIFIC_WALLIS,
            self::VALUE_PST_8_PDT,
            self::VALUE_WET,
        );
    }
    /**
     * Method returning the class name
     * @return string __CLASS__
     */
    public function __toString()
    {
        return __CLASS__;
    }
}
