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Cambiar zona horaria en PHP (date_default_timezone_set)


Algo importante que se debe hacer en un sitio web es permitir que los usuarios establezcan la zona horaria donde viven, de modo que la hora de todas las operaciones hechas dicho o usuario o por el sistema para servir a ese usuario usen la hora adecuada.

Recordemos que un sitio web puede ser visto en cualquier parte del mundo y la hora del servidor web no es la hora que tienen todos los usuarios en el mundo.

PHP permite establecer la zona horaria, a través de la función: date_default_timezone_set(“zona horaria”)

ejemplo: date_default_timezone_set("Africa/Addis_Ababa");


Los valores admisibles se pueden encontrar en cualquier manual de PHP:

Grupos de Africa:
 


Africa/Abidjan
Africa/Accra Africa/Addis_Ababa Africa/Algiers Africa/Asmera
Africa/Bamako Africa/Bangui Africa/Banjul Africa/Bissau Africa/Blantyre
Africa/Brazzaville Africa/Bujumbura Africa/Cairo Africa/Casablanca Africa/Ceuta
Africa/Conakry Africa/Dakar Africa/Dar_es_Salaam Africa/Djibouti Africa/Douala
Africa/El_Aaiun Africa/Freetown Africa/Gaborone Africa/Harare Africa/Johannesburg
Africa/Kampala Africa/Khartoum Africa/Kigali Africa/Kinshasa Africa/Lagos
Africa/Libreville Africa/Lome Africa/Luanda Africa/Lubumbashi Africa/Lusaka
Africa/Malabo Africa/Maputo Africa/Maseru Africa/Mbabane Africa/Mogadishu
Africa/Monrovia Africa/Nairobi Africa/Ndjamena Africa/Niamey Africa/Nouakchott
Africa/Ouagadougou Africa/Porto-Novo Africa/Sao_Tome Africa/Timbuktu Africa/Tripoli


Grupos de América

 



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/San_Juan America/Argentina/Tucuman
America/Argentina/Ushuaia America/Aruba America/Asuncion America/Atikokan America/Atka
America/Bahia 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/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/Vevay America/Indiana/Vincennes America/Indianapolis America/Inuvik
America/Iqaluit America/Jamaica America/Jujuy America/Juneau America/Kentucky/Louisville
America/Kentucky/Monticello America/Knox_IN America/La_Paz America/Lima America/Los_Angeles
America/Louisville America/Maceio America/Managua America/Manaus America/Martinique
America/Mazatlan America/Mendoza America/Menominee America/Merida 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/Center America/North_Dakota/New_Salem 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/Rio_Branco America/Rosario America/Santiago America/Santo_Domingo
America/Sao_Paulo America/Scoresbysund America/Shiprock 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


Grupos de La Antártida

 

Antarctica/Casey Antarctica/Davis Antarctica/DumontDUrville Antarctica/Mawson Antarctica/McMurdo
Antarctica/Palmer Antarctica/Rothera Antarctica/South_Pole Antarctica/Syowa Antarctica/Vostok


Grupos del Ártico

Arctic/Longyearbyen

Grupos de Asia
 

Asia/Aden Asia/Almaty Asia/Amman Asia/Anadyr Asia/Aqtau
Asia/Aqtobe Asia/Ashgabat Asia/Ashkhabad Asia/Baghdad Asia/Bahrain
Asia/Baku Asia/Bangkok Asia/Beirut Asia/Bishkek Asia/Brunei
Asia/Calcutta Asia/Choibalsan Asia/Chongqing Asia/Chungking Asia/Colombo
Asia/Dacca Asia/Damascus Asia/Dhaka Asia/Dili Asia/Dubai
Asia/Dushanbe Asia/Gaza Asia/Harbin Asia/Hong_Kong Asia/Hovd
Asia/Irkutsk Asia/Istanbul Asia/Jakarta Asia/Jayapura Asia/Jerusalem
Asia/Kabul Asia/Kamchatka Asia/Karachi Asia/Kashgar Asia/Katmandu
Asia/Krasnoyarsk Asia/Kuala_Lumpur Asia/Kuching Asia/Kuwait Asia/Macao
Asia/Macau Asia/Magadan Asia/Makassar Asia/Manila Asia/Muscat
Asia/Nicosia Asia/Novosibirsk Asia/Omsk Asia/Oral Asia/Phnom_Penh
Asia/Pontianak Asia/Pyongyang Asia/Qatar Asia/Qyzylorda Asia/Rangoon
Asia/Riyadh Asia/Saigon Asia/Sakhalin Asia/Samarkand Asia/Seoul
Asia/Shanghai Asia/Singapore Asia/Taipei Asia/Tashkent Asia/Tbilisi
Asia/Tehran Asia/Tel_Aviv Asia/Thimbu Asia/Thimphu Asia/Tokyo
Asia/Ujung_Pandang Asia/Ulaanbaatar Asia/Ulan_Bator Asia/Urumqi Asia/Vientiane
Asia/Vladivostok Asia/Yakutsk Asia/Yekaterinburg Asia/Yerevan  


Grupos del Atlántico

Atlantic/Azores Atlantic/Bermuda Atlantic/Canary Atlantic/Cape_Verde Atlantic/Faeroe
Atlantic/Jan_Mayen Atlantic/Madeira Atlantic/Reykjavik Atlantic/South_Georgia Atlantic/St_Helena
Atlantic/Stanley        


Grupos de Australia

 

Australia/ACT Australia/Adelaide Australia/Brisbane Australia/Broken_Hill Australia/Canberra
Australia/Currie Australia/Darwin Australia/Hobart Australia/LHI Australia/Lindeman
Australia/Lord_Howe Australia/Melbourne Australia/North Australia/NSW Australia/Perth
Australia/Queensland Australia/South Australia/Sydney Australia/Tasmania Australia/Victoria
Australia/West Australia/Yancowinna      


Grupos de Europa

Europe/Amsterdam Europe/Andorra Europe/Athens Europe/Belfast Europe/Belgrade
Europe/Berlin Europe/Bratislava Europe/Brussels Europe/Bucharest Europe/Budapest
Europe/Chisinau Europe/Copenhagen Europe/Dublin Europe/Gibraltar Europe/Guernsey
Europe/Helsinki Europe/Isle_of_Man Europe/Istanbul Europe/Jersey Europe/Kaliningrad
Europe/Kiev Europe/Lisbon Europe/Ljubljana Europe/London Europe/Luxembourg
Europe/Madrid Europe/Malta Europe/Mariehamn Europe/Minsk Europe/Monaco
Europe/Moscow Europe/Nicosia Europe/Oslo Europe/Paris Europe/Prague
Europe/Riga Europe/Rome Europe/Samara Europe/San_Marino Europe/Sarajevo
Europe/Simferopol Europe/Skopje Europe/Sofia Europe/Stockholm Europe/Tallinn
Europe/Tirane Europe/Tiraspol Europe/Uzhgorod Europe/Vaduz Europe/Vatican
Europe/Vienna Europe/Vilnius Europe/Volgograd Europe/Warsaw Europe/Zagreb
Europe/Zaporozhye Europe/Zurich      


Grupos de India

Indian/Antananarivo Indian/Chagos Indian/Christmas Indian/Cocos Indian/Comoro
Indian/Kerguelen Indian/Mahe Indian/Maldives Indian/Mauritius Indian/Mayotte
Indian/Reunion        


Grupos del Pacifico

Pacific/Apia Pacific/Auckland Pacific/Chatham Pacific/Easter Pacific/Efate
Pacific/Enderbury Pacific/Fakaofo Pacific/Fiji Pacific/Funafuti Pacific/Galapagos
Pacific/Gambier Pacific/Guadalcanal Pacific/Guam Pacific/Honolulu Pacific/Johnston
Pacific/Kiritimati Pacific/Kosrae Pacific/Kwajalein Pacific/Majuro Pacific/Marquesas
Pacific/Midway Pacific/Nauru Pacific/Niue Pacific/Norfolk Pacific/Noumea
Pacific/Pago_Pago Pacific/Palau Pacific/Pitcairn Pacific/Ponape Pacific/Port_Moresby
Pacific/Rarotonga Pacific/Saipan Pacific/Samoa Pacific/Tahiti Pacific/Tarawa
Pacific/Tongatapu Pacific/Truk Pacific/Wake Pacific/Wallis Pacific/Yap


Otros grupos

Brazil/Acre Brazil/DeNoronha Brazil/East Brazil/West Canada/Atlantic
Canada/Central Canada/East-Saskatchewan Canada/Eastern Canada/Mountain Canada/Newfoundland
Canada/Pacific Canada/Saskatchewan Canada/Yukon CET Chile/Continental
Chile/EasterIsland CST6CDT Cuba EET Egypt
Eire EST EST5EDT Etc/GMT Etc/GMT+0
Etc/GMT+1 Etc/GMT+10 Etc/GMT+11 Etc/GMT+12 Etc/GMT+2
Etc/GMT+3 Etc/GMT+4 Etc/GMT+5 Etc/GMT+6 Etc/GMT+7
Etc/GMT+8 Etc/GMT+9 Etc/GMT-0 Etc/GMT-1 Etc/GMT-10
Etc/GMT-11 Etc/GMT-12 Etc/GMT-13 Etc/GMT-14 Etc/GMT-2
Etc/GMT-3 Etc/GMT-4 Etc/GMT-5 Etc/GMT-6 Etc/GMT-7
Etc/GMT-8 Etc/GMT-9 Etc/GMT0 Etc/Greenwich Etc/UCT
Etc/Universal Etc/UTC Etc/Zulu Factory GB
GB-Eire GMT GMT+0 GMT-0 GMT0
Greenwich Hongkong HST Iceland Iran
Israel Jamaica Japan Kwajalein Libya
MET Mexico/BajaNorte Mexico/BajaSur Mexico/General MST
MST7MDT Navajo NZ NZ-CHAT Poland
Portugal PRC PST8PDT ROC ROK
Singapore Turkey UCT Universal US/Alaska
US/Aleutian US/Arizona US/Central US/East-Indiana US/Eastern
US/Hawaii US/Indiana-Starke US/Michigan US/Mountain US/Pacific
US/Pacific-New US/Samoa UTC W-SU WET
Zulu        


Códicos internacionales de cada zona horaria
http://www.blogger.com/img/blank.gif

Código Definición GMT
ACDT Australian Central Daylight Time +10:30
ACIT Ashmore and Cartier Islands Time +8:00
ACST Australian Central Standard Time +9:30
ACT Acre Time -5
ACWST Australian Central Western Standard Time +8:45
ADT Arabia Daylight Time +4
ADT Atlantic Daylight Time -3
AEDT Australian Eastern Daylight Time +11
AEST Australian Eastern Standard Time +10
AFT Afghanistan Time +4:30
AKDT Alaska Daylight Time -8
AKST Alaska Standard Time -9
AMDT Armenia Daylight Time +5
AMST Armenia Standard Time +4
ANAST Anadyr' Summer Time +13
ANAT Anadyr' Time +12
APO Apo Island Time +8:15
ARDT Argentina Daylight Time -2
ART Argentina Time -3
AST Al Manamah Standard Time +3
AST Arabia Standard Time +3
AST Arabic Standard Time +3
AST Atlantic Standard Time -4
AWST Australian Western Standard Time +8
AZODT Azores Daylight Time 0
AZOST Azores Standard Time -1
AZST Azerbaijan Summer Time +5
AZT Azerbaijan Time +4
 
BIT Baker Island Time -12
BDT Bangladesh Standard Time +7
BEST Brazil Eastern Standard Time -2
BDT Brunei Time +8
BIOT British Indian Ocean Time +6
BOT Bolivia Time -4
BRST Brazilia Summer Time -2
BRT Brazilia Time -3
BST British Summer Time +1
BTT Bhutan Time +6
BWDT Brazil Western Daylight Time -3
BWST Brazil Western Standard Time -4
 
CAST Chinese Antarctic Standard Time +5
CAT Central Africa Time +2
CCT Cocos Islands Time +6:30
CDT Central Daylight Time -5
CEST Central Europe Summer Time +2
CET Central Europe Time +1
CGST Central Greenland Summer Time -2
CGT Central Greenland Time -3
CHADT Chatham Island Daylight Time +13:45
CHAST Chatham Island Standard Time +12:45
ChST Chamorro Standard Time +10
CIST Clipperton Island Standard Time -8
CKT Cook Island Time -10
CLDT Chile Daylight Time -3
CLST Chile Standard Time -4
COT Colombia Time -5
CST Central Standard Time -6
CST China Standard Time +8
CVT Cape Verde Time -1
CXT Christmas Island Time +7
 
DAVT Davis Time +5
DTAT District de Terre Adélie Time +10
 
EADT Easter Island Daylight Time -5
EAST Easter Island Standard Time -6
EAT East Africa Time +3
ECT Ecuador Time -5
EDT Eastern Daylight Time -4
EEST Eastern Europe Summer Time +3
EET Eastern Europe Time +2
EGT Eastern Greenland Time -1
EGST Eastern Greenland Summer Time 0
EKST East Kazakhstan Standard Time +6
EST Eastern Standard Time -5
 
FJDT Fiji Daylight Time +13
FJT Fiji Time +12
FKDT Falkland Island Daylight Time -3
FKST Falkland Island Standard Time -4
 
GALT Galapagos Time -6
GET Georgia Standard Time +4
GFT French Guiana Time -3
GILT Gilbert Island Time +12
GIT Gambier Island Time -9
GMT Greenwich Meantime 0
GST Gulf Standard Time +4
GST South Georgia and the South Sandwich Islands -2
GYT Guyana Time -4
 
HADT Hawaii - Aleutian Daylight Time -9
HAST Hawaii - Aleutian Standard Time -10
HKST Hong Kong Standard Time +8
HMT Heard and McDonald Islands Time +5
 
ICT Îles Crozet Time +4
ICT Indochina Time +7
IDT Ireland Daylight Time +1
IDT Israel Daylight Time +3
IRDT Îran Daylight Time +4:30
IRKST Irkutsk Summer Time +9
IRKT Irkutsk Time +8
IRST Îran Standard Time +3:30
IST Indian Standard Time +5:30
IST Ireland Standard Time 0
IST Israel Standard Time +2
 
JFDT Juan Fernandez Islands Daylight Time -3
JFST Juan Fernandez Islands Standard Time -4
JST Japan Standard Time +9
 
KGST Kyrgyzstan Summer Time +6
KGT Kyrgyzstan Time +5
KRAST Krasnoyarsk Summer Time +8
KRAT Krasnoyarsk Time +7
KOST Kosrae Standard Time +11
KOVT Khovd Time +7
KOVST Khovd Summer Time +8
KST Korea Standard Time +9
 
LHDT Lord Howe Daylight Time +11
LHST Lord Howe Standard Time +10:30
LINT Line Island Time +14
LKT Sri Lanka Time +6
 
MAGST Magadan Island Summer Time +12
MAGT Magadan Island Time +11
MAWT Mawson Time +5
MBT Macclesfield Bank Time +8
MDT Mountain Daylight Time -6
MIT Marquesas Islands Time -9:30
MHT Marshall Islands Time +12
MMT Myanmar Time +6:30
MNT Mongolia Time +8
MNST Mongolia Summer Time +9
MSD Moscow Summer Time +4
MSK Moscow Standard Time +3
MST Mountain Standard Time -7
MUT Mauritius Time +4
MVT Maldives Time +5
MYT Malaysia Time +8
 
NCT New Caledonia Time +11
NDT Newfoundland Daylight Time -2:30
NFT Norfolk Time +11:30
NPT Nepal Time +5:45
NRT Nauru Time +12
NOVST Novosibirsk Summer Time +7
NOVT Novosibirsk Time +6
NST Newfoundland Standard Time -3:30
NUT Niue Time -11
NZDT New Zealand Daylight Time +13
NZST New Zealand Standard Time +12
 
OMSK Omsk Summer Time +7
OMST Omsk Standard Time +6
 
PDT Pacific Daylight Time -7
PETST Petropavlovsk Summer Time +13
PET Peru Time -5
PETT Petropavlovsk Time +12
PGT Papua New Guinea Time +10
PHOT Phoenix Island Time +13
PIT Paracel Islands Time +8
PIT Peter Island Time -6
PIT Pratas Islands +8
PKT Pakistan Time +5
PKST Pakistan Summer Time +6
PMDT Pierre & Miquelon Daylight Time -2
PMST Pierre & Miquelon Standard Time -3
PONT Pohnpei Standard Time +11
PST Pacific Standard Time -8
PST Philippine Standar Time +8
PST Pitcairn Standard Time -8
PWT Palau Time +9
PYST Paraguay Summer Time -3
PYT Paraguay Time -4
RET Réunion Time +4
ROTT Rothera Time -3
 
SAMST Samara Summer Time +5
SAMT Samara Time +4
SAST South Africa Standard Time +2
SBT Solomon Island Time +11
SCDT Santa Claus Delivery Time +13
SCST Santa Claus Standard Time +12
SCT Seychelles Time +4
SGT Singapore Time +8
SIT Spratly Islands Time +8
SLT San Luis Time -4
SLT Sierra Leone Time 0
SLST San Luis Summer Time -3
SRT Suriname Time -3
SDT Samoa Daylight Time -10
SST Samoa Standard Time -11
SST Scarborough Shoal Time +8
SYST Syrian Summer Time +3
SYT Syrian Standard Time +2
 
TAHT Tahiti Time -10
TFT French Southern and Antarctic Time +5
TJT Tajikistan Time +5
TKT Tokelau Time -10
TMT Turkmenistan Time +5
TOT Tonga Time +13
TPT East Timor Time +9
TRUT Truk Time +10
TVT Tuvalu Time +12
TWT Taiwan Time +8
 
UTC Universal Coordinated Time 0
UYT Uruguay Standard Time -3
UYST Uruguay Summer Time -2
UZT Uzbekistan Time +5
 
VLAST Vladivostok Summer Time +11
VLAT Vladivostok Time +10
VOST Vostok Time +6
VST Venezuela Standard Time -4:30
VUT Vanuatu Time +11
 
WAST Western Africa Summer Time +2
WAT Western Africa Time +1
WEST Western Europe Summer Time +1
WET Western Europe Time 0
WFT Wallis and Futuna Time +12
WIB Waktu Indonesia Bagian Barat +7
WIT Waktu Indonesia Bagian Timur +9
WITA Waktu Indonesia Bagian Tengah +8
WKST West Kazakhstan Standard Time +5
 
XJT Xinjiang Standard Time +6
 
YAKST Yakutsk Summer Time +10
YAKT Yakutsk Time +9
YAPT Yap Time +10
YEKST Yekaterinburg Summer Time +6
YEKT Yekaterinburg Time +5



Moises Soft (Desarrollo web en Cuba)

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