'Pacific/Midway', 'US/Samoa' => 'Pacific/Pago_Pago', 'US/Hawaii' => 'Pacific/Honolulu', 'US/Alaska' => 'America/Anchorage', 'US/Pacific' => 'America/Los_Angeles', 'America/Tijuana' => 'America/Tijuana', 'US/Arizona' => 'America/Phoenix', 'US/Mountain' => 'America/Denver', 'America/Chihuahua' => 'America/Chihuahua', 'America/Mazatlan' => 'America/Mazatlan', 'America/Mexico_City' => 'America/Mexico_City', 'America/Monterrey' => 'America/Monterrey', 'Canada/Saskatchewan' => 'America/Regina', 'US/Central' => 'America/Chicago', 'US/Eastern' => 'America/New_York', 'US/East-Indiana' => 'America/Indiana/Indianapolis', 'America/Bogota' => 'America/Bogota', 'America/Lima' => 'America/Lima', 'America/Caracas' => 'America/Caracas', 'Canada/Atlantic' => 'America/Halifax', 'America/La_Paz' => 'America/La_Paz', 'America/Santiago' => 'America/Santiago', 'Canada/Newfoundland' => 'America/St_Johns', 'America/Buenos_Aires' => 'America/Argentina/Buenos_Aires', 'America/Godthab' => 'America/Godthab', 'America/Sao_Paulo' => 'America/Sao_Paulo', 'Atlantic/Stanley' => 'Atlantic/Stanley', 'Atlantic/Azores' => 'Atlantic/Azores', 'Atlantic/Cape_Verde' => 'Atlantic/Cape_Verde', 'Africa/Casablanca' => 'Africa/Casablanca', 'Europe/Dublin' => 'Europe/Dublin', 'Europe/Lisbon' => 'Europe/Lisbon', 'Europe/London' => 'Europe/London', 'Africa/Monrovia' => 'Africa/Monrovia', 'Europe/Amsterdam' => 'Europe/Amsterdam', 'Europe/Belgrade' => 'Europe/Belgrade', 'Europe/Berlin' => 'Europe/Berlin', 'Europe/Bratislava' => 'Europe/Bratislava', 'Europe/Brussels' => 'Europe/Brussels', 'Europe/Budapest' => 'Europe/Budapest', 'Europe/Copenhagen' => 'Europe/Copenhagen', 'Europe/Ljubljana' => 'Europe/Ljubljana', 'Europe/Madrid' => 'Europe/Madrid', 'Europe/Paris' => 'Europe/Paris', 'Europe/Prague' => 'Europe/Prague', 'Europe/Rome' => 'Europe/Rome', 'Europe/Sarajevo' => 'Europe/Sarajevo', 'Europe/Skopje' => 'Europe/Skopje', 'Europe/Stockholm' => 'Europe/Stockholm', 'Europe/Vienna' => 'Europe/Vienna', 'Europe/Warsaw' => 'Europe/Warsaw', 'Europe/Zagreb' => 'Europe/Zagreb', 'Europe/Athens' => 'Europe/Athens', 'Europe/Bucharest' => 'Europe/Bucharest', 'Africa/Cairo' => 'Africa/Cairo', 'Africa/Harare' => 'Africa/Harare', 'Europe/Helsinki' => 'Europe/Helsinki', 'Asia/Jerusalem' => 'Asia/Jerusalem', 'Europe/Kiev' => 'Europe/Kiev', 'Europe/Minsk' => 'Europe/Minsk', 'Europe/Riga' => 'Europe/Riga', 'Europe/Sofia' => 'Europe/Sofia', 'Europe/Tallinn' => 'Europe/Tallinn', 'Europe/Vilnius' => 'Europe/Vilnius', 'Europe/Istanbul' => 'Europe/Istanbul', 'Asia/Baghdad' => 'Asia/Baghdad', 'Asia/Kuwait' => 'Asia/Kuwait', 'Africa/Nairobi' => 'Africa/Nairobi', 'Asia/Riyadh' => 'Asia/Riyadh', 'Asia/Tehran' => 'Asia/Tehran', 'Europe/Moscow' => 'Europe/Moscow', 'Asia/Baku' => 'Asia/Baku', 'Europe/Volgograd' => 'Europe/Volgograd', 'Asia/Muscat' => 'Asia/Muscat', 'Asia/Tbilisi' => 'Asia/Tbilisi', 'Asia/Yerevan' => 'Asia/Yerevan', 'Asia/Kabul' => 'Asia/Kabul', 'Asia/Karachi' => 'Asia/Karachi', 'Asia/Tashkent' => 'Asia/Tashkent', 'Asia/Kolkata' => 'Asia/Kolkata', 'Asia/Kathmandu' => 'Asia/Kathmandu', 'Asia/Yekaterinburg' => 'Asia/Yekaterinburg', 'Asia/Almaty' => 'Asia/Almaty', 'Asia/Dhaka' => 'Asia/Dhaka', 'Asia/Novosibirsk' => 'Asia/Novosibirsk', 'Asia/Bangkok' => 'Asia/Bangkok', 'Asia/Ho_Chi_Minh' => 'Asia/Ho_Chi_Minh', 'Asia/Jakarta' => 'Asia/Jakarta', 'Asia/Krasnoyarsk' => 'Asia/Krasnoyarsk', 'Asia/Chongqing' => 'Asia/Chongqing', 'Asia/Hong_Kong' => 'Asia/Hong_Kong', 'Asia/Kuala_Lumpur' => 'Asia/Kuala_Lumpur', 'Australia/Perth' => 'Australia/Perth', 'Asia/Singapore' => 'Asia/Singapore', 'Asia/Taipei' => 'Asia/Taipei', 'Asia/Ulaanbaatar' => 'Asia/Ulaanbaatar', 'Asia/Urumqi' => 'Asia/Urumqi', 'Asia/Irkutsk' => 'Asia/Irkutsk', 'Asia/Seoul' => 'Asia/Seoul', 'Asia/Tokyo' => 'Asia/Tokyo', 'Australia/Adelaide' => 'Australia/Adelaide', 'Australia/Darwin' => 'Australia/Darwin', 'Asia/Yakutsk' => 'Asia/Yakutsk', 'Australia/Brisbane' => 'Australia/Brisbane', 'Australia/Canberra' => 'Australia/Sydney', 'Pacific/Guam' => 'Pacific/Guam', 'Australia/Hobart' => 'Australia/Hobart', 'Australia/Melbourne' => 'Australia/Melbourne', 'Pacific/Port_Moresby' => 'Pacific/Port_Moresby', 'Australia/Sydney' => 'Australia/Sydney', 'Asia/Vladivostok' => 'Asia/Vladivostok', 'Asia/Magadan' => 'Asia/Magadan', 'Pacific/Auckland' => 'Pacific/Auckland', 'Pacific/Fiji' => 'Pacific/Fiji' ]; protected function setUp(): void { parent::setUp(); } public function testTimezoneCompatibility() { foreach($this->timezones as $timezone) { date_default_timezone_set('GMT'); $date = new \DateTime("now", new \DateTimeZone($timezone)); $this->assertIsNumeric($date->getOffset()); } } }