America/Adak America/Anchorage America/Anguilla America/Antigua America/Araguaina
America/Argentina/Buenos_Aires America/Argentina/Catamarca America/Argentina/ComodRivadavia America/Argentina/Cordoba America/Argentina/Jujuy
America/Argentina/La_Rioja America/Argentina/Mendoza America/Argentina/Rio_Gallegos America/Argentina/Salta America/Argentina/San_Juan
America/Argentina/San_Luis America/Argentina/Tucuman America/Argentina/Ushuaia America/Aruba America/Asuncion
America/Atikokan America/Atka America/Bahia America/Bahia_Banderas America/Barbados
America/Belem America/Belize America/Blanc-Sablon America/Boa_Vista America/Bogota
America/Boise America/Buenos_Aires America/Cambridge_Bay America/Campo_Grande America/Cancun
America/Caracas America/Catamarca America/Cayenne America/Cayman America/Chicago
America/Chihuahua America/Coral_Harbour America/Cordoba America/Costa_Rica America/Creston
America/Cuiaba America/Curacao America/Danmarkshavn America/Dawson America/Dawson_Creek
America/Denver America/Detroit America/Dominica America/Edmonton America/Eirunepe
America/El_Salvador America/Ensenada America/Fort_Wayne America/Fortaleza America/Glace_Bay
America/Godthab America/Goose_Bay America/Grand_Turk America/Grenada America/Guadeloupe
America/Guatemala America/Guayaquil America/Guyana America/Halifax America/Havana
America/Hermosillo America/Indiana/Indianapolis America/Indiana/Knox America/Indiana/Marengo America/Indiana/Petersburg
America/Indiana/Tell_City America/Indiana/Vevay America/Indiana/Vincennes America/Indiana/Winamac America/Indianapolis
America/Inuvik America/Iqaluit America/Jamaica America/Jujuy America/Juneau
America/Kentucky/Louisville America/Kentucky/Monticello America/Knox_IN America/Kralendijk America/La_Paz
America/Lima America/Los_Angeles America/Louisville America/Lower_Princes America/Maceio
America/Managua America/Manaus America/Marigot America/Martinique America/Matamoros
America/Mazatlan America/Mendoza America/Menominee America/Merida America/Metlakatla
America/Mexico_City America/Miquelon America/Moncton America/Monterrey America/Montevideo
America/Montreal America/Montserrat America/Nassau America/New_York America/Nipigon
America/Nome America/Noronha America/North_Dakota/Beulah America/North_Dakota/Center America/North_Dakota/New_Salem
America/Ojinaga America/Panama America/Pangnirtung America/Paramaribo America/Phoenix
America/Port-au-Prince America/Port_of_Spain America/Porto_Acre America/Porto_Velho America/Puerto_Rico
America/Rainy_River America/Rankin_Inlet America/Recife America/Regina America/Resolute
America/Rio_Branco America/Rosario America/Santa_Isabel America/Santarem America/Santiago
America/Santo_Domingo America/Sao_Paulo America/Scoresbysund America/Shiprock America/Sitka
America/St_Barthelemy America/St_Johns America/St_Kitts America/St_Lucia America/St_Thomas
America/St_Vincent America/Swift_Current America/Tegucigalpa America/Thule America/Thunder_Bay
America/Tijuana America/Toronto America/Tortola America/Vancouver America/Virgin
America/Whitehorse America/Winnipeg America/Yakutat America/Yellowknife  
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User Contributed Notes 6 notes

eslindsey at gmail dot com
3 months ago
For the United States:

Eastern ........... America/New_York
Central ........... America/Chicago
Mountain .......... America/Denver
Mountain no DST ... America/Phoenix
Pacific ........... America/Los_Angeles
Alaska ............ America/Anchorage
Hawaii ............ America/Adak
Hawaii no DST ..... Pacific/Honolulu

php at firstnetimpressions dot com
30 days ago
I give the folks in the USA the benefit of the doubt in that they know their own time zone and whether or not to use daylight savings time.   The whole city list can be boiled down to just fourteen entries (including Hawaii and Puerto Rico).


//  Timezone suggestions from PHP CookBook By Adam Trachtenberg
  //  and David Sklar Table 3-5 zoneinfo zones

$zones = array();
$zones['Pacific/Honolulu']     = 'Hawaii-Aleutian Standard Time (HAST)';
$zones['US/Aleutian']          = 'Hawaii-Aleutian with Daylight Savings Time (HADT)';
$zones['Etc/GMT+9']            = 'Alaska Standard Time (AKST)';
$zones['America/Anchorage']    = 'Alaska with Daylight Savings Time (AKDT)';
$zones['America/Dawson_Creek'] = 'Pacific Standard Time (PST)';
$zones['PST8PDT']              = 'Pacific with Daylight Savings Time (PDT)';
$zones['MST']                  = 'Mountain Standard Time (MST)';
$zones['MST7MDT']              = 'Mountain with Daylight Savings Time (MDT)';
$zones['Canada/Saskatchewan']  = 'Central Standard Time (CST)';
$zones['CST6CDT']              = 'Central with Daylight Savings Time (CDT)';
$zones['EST']                  = 'Eastern Standard Time (EST)';
$zones['EST5EDT']              = 'Eastern with Daylight Savings Time (EDT)';
$zones['America/Puerto_Rico']  = 'Atlantic Standard Time (AST)';
$zones['America/Halifax']      = 'Atlantic with Daylight Savings Time (ADT)';

Mirai Densetsu
2 months ago
At Brazil, note that the Brazilian official timezone is wrongly described as "America/Sao_Paulo", when it should be "America/Brasilia".

The Sao Paulo timezone does not exist, since this city follow the Brasilia official timezone (BRT or BRST).
kapahala11 at yahoo dot com
6 years ago
Note that "America" means "the continents of North and South America, including the Caribbean islands".  It does *not* mean "The United States Of America".

If you're looking for the Hawaii timezone, you'll find it in Pacific/Honolulu (not America/Honolulu).
cjacunad at gmail dot com
5 years ago
You can set a default time zone for your server from the configuration file (php.ini) at the line:

; Defines the default timezone used by the date functions
date.timezone = America/New_York
2 months ago
How is to Costa Rica? or Central America?
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