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I have a commenting system on my website which displays the date and time of when something was commented. I have used this method to do it at the moment:

date_default_timezone_set("Europe/London");
echo $date = "posted on " . date("Y-m-d") . " at " . date("H:i:s") . "<br><br>";

I had to set the timezone to Europe/London because otherwise when the website is on the server; it gets the time for whichever timezone that is set on the server.

I set it to Europe/London because that's where my site is appealed at (people in the UK). However I would like for the time to be gotten based on the viewer's local time. Is there any possible way of doing this other than a load of if statements for every single country in the world lol, that would take too long.

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Last Post by asif49
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How about setting the user's preferred local time in the users table? I don't think it's possible to be 100% sure of an user's timezone even from an IP address.

You need a list of timezones, populate the a dropdown on your users' profile page, if you have such a thing.

Here's a list you can copy and paste (taken from my webpage: http://diafol.org/datetime.php

<select id="tz" name="tz"> 
					<option value="Africa/Abidjan">Africa/Abidjan</option> 
					<option value="Africa/Accra">Africa/Accra</option> 
					<option value="Africa/Addis_Ababa">Africa/Addis_Ababa</option> 
					<option value="Africa/Algiers">Africa/Algiers</option> 
					<option value="Africa/Asmara">Africa/Asmara</option> 
					<option value="Africa/Asmera">Africa/Asmera</option> 
					<option value="Africa/Bamako">Africa/Bamako</option> 
					<option value="Africa/Bangui">Africa/Bangui</option> 
					<option value="Africa/Banjul">Africa/Banjul</option> 
					<option value="Africa/Bissau">Africa/Bissau</option> 
					<option value="Africa/Blantyre">Africa/Blantyre</option> 
					<option value="Africa/Brazzaville">Africa/Brazzaville</option> 
					<option value="Africa/Bujumbura">Africa/Bujumbura</option> 
					<option value="Africa/Cairo">Africa/Cairo</option> 
					<option value="Africa/Casablanca">Africa/Casablanca</option> 
					<option value="Africa/Ceuta">Africa/Ceuta</option> 
					<option value="Africa/Conakry">Africa/Conakry</option> 
					<option value="Africa/Dakar">Africa/Dakar</option> 
					<option value="Africa/Dar_es_Salaam">Africa/Dar_es_Salaam</option> 
					<option value="Africa/Djibouti">Africa/Djibouti</option> 
					<option value="Africa/Douala">Africa/Douala</option> 
					<option value="Africa/El_Aaiun">Africa/El_Aaiun</option> 
					<option value="Africa/Freetown">Africa/Freetown</option> 
					<option value="Africa/Gaborone">Africa/Gaborone</option> 
					<option value="Africa/Harare">Africa/Harare</option> 
					<option value="Africa/Johannesburg">Africa/Johannesburg</option> 
					<option value="Africa/Kampala">Africa/Kampala</option> 
					<option value="Africa/Khartoum">Africa/Khartoum</option> 
					<option value="Africa/Kigali">Africa/Kigali</option> 
					<option value="Africa/Kinshasa">Africa/Kinshasa</option> 
					<option value="Africa/Lagos">Africa/Lagos</option> 
					<option value="Africa/Libreville">Africa/Libreville</option> 
					<option value="Africa/Lome">Africa/Lome</option> 
					<option value="Africa/Luanda">Africa/Luanda</option> 
					<option value="Africa/Lubumbashi">Africa/Lubumbashi</option> 
					<option value="Africa/Lusaka">Africa/Lusaka</option> 
					<option value="Africa/Malabo">Africa/Malabo</option> 
					<option value="Africa/Maputo">Africa/Maputo</option> 
					<option value="Africa/Maseru">Africa/Maseru</option> 
					<option value="Africa/Mbabane">Africa/Mbabane</option> 
					<option value="Africa/Mogadishu">Africa/Mogadishu</option> 
					<option value="Africa/Monrovia">Africa/Monrovia</option> 
					<option value="Africa/Nairobi">Africa/Nairobi</option> 
					<option value="Africa/Ndjamena">Africa/Ndjamena</option> 
					<option value="Africa/Niamey">Africa/Niamey</option> 
					<option value="Africa/Nouakchott">Africa/Nouakchott</option> 
					<option value="Africa/Ouagadougou">Africa/Ouagadougou</option> 
					<option value="Africa/Porto-Novo">Africa/Porto-Novo</option> 
					<option value="Africa/Sao_Tome">Africa/Sao_Tome</option> 
					<option value="Africa/Timbuktu">Africa/Timbuktu</option> 
					<option value="Africa/Tripoli">Africa/Tripoli</option> 
					<option value="Africa/Tunis">Africa/Tunis</option> 
					<option value="Africa/Windhoek">Africa/Windhoek</option> 
					<option value="America/Adak">America/Adak</option> 
					<option value="America/Anchorage">America/Anchorage</option> 
					<option value="America/Anguilla">America/Anguilla</option> 
					<option value="America/Antigua">America/Antigua</option> 
					<option value="America/Araguaina">America/Araguaina</option> 
					<option value="America/Argentina/Buenos_Aires">America/Argentina/Buenos_Aires</option> 
					<option value="America/Argentina/Catamarca">America/Argentina/Catamarca</option> 
					<option value="America/Argentina/ComodRivadavia">America/Argentina/ComodRivadavia</option> 
					<option value="America/Argentina/Cordoba">America/Argentina/Cordoba</option> 
					<option value="America/Argentina/Jujuy">America/Argentina/Jujuy</option> 
					<option value="America/Argentina/La_Rioja">America/Argentina/La_Rioja</option> 
					<option value="America/Argentina/Mendoza">America/Argentina/Mendoza</option> 
					<option value="America/Argentina/Rio_Gallegos">America/Argentina/Rio_Gallegos</option> 
					<option value="America/Argentina/Salta">America/Argentina/Salta</option> 
					<option value="America/Argentina/San_Juan">America/Argentina/San_Juan</option> 
					<option value="America/Argentina/San_Luis">America/Argentina/San_Luis</option> 
					<option value="America/Argentina/Tucuman">America/Argentina/Tucuman</option> 
					<option value="America/Argentina/Ushuaia">America/Argentina/Ushuaia</option> 
					<option value="America/Aruba">America/Aruba</option> 
					<option value="America/Asuncion">America/Asuncion</option> 
					<option value="America/Atikokan">America/Atikokan</option> 
					<option value="America/Atka">America/Atka</option> 
					<option value="America/Bahia">America/Bahia</option> 
					<option value="America/Barbados">America/Barbados</option> 
					<option value="America/Belem">America/Belem</option> 
					<option value="America/Belize">America/Belize</option> 
					<option value="America/Blanc-Sablon">America/Blanc-Sablon</option> 
					<option value="America/Boa_Vista">America/Boa_Vista</option> 
					<option value="America/Bogota">America/Bogota</option> 
					<option value="America/Boise">America/Boise</option> 
					<option value="America/Buenos_Aires">America/Buenos_Aires</option> 
					<option value="America/Cambridge_Bay">America/Cambridge_Bay</option> 
					<option value="America/Campo_Grande">America/Campo_Grande</option> 
					<option value="America/Cancun">America/Cancun</option> 
					<option value="America/Caracas">America/Caracas</option> 
					<option value="America/Catamarca">America/Catamarca</option> 
					<option value="America/Cayenne">America/Cayenne</option> 
					<option value="America/Cayman">America/Cayman</option> 
					<option value="America/Chicago">America/Chicago</option> 
					<option value="America/Chihuahua">America/Chihuahua</option> 
					<option value="America/Coral_Harbour">America/Coral_Harbour</option> 
					<option value="America/Cordoba">America/Cordoba</option> 
					<option value="America/Costa_Rica">America/Costa_Rica</option> 
					<option value="America/Cuiaba">America/Cuiaba</option> 
					<option value="America/Curacao">America/Curacao</option> 
					<option value="America/Danmarkshavn">America/Danmarkshavn</option> 
					<option value="America/Dawson">America/Dawson</option> 
					<option value="America/Dawson_Creek">America/Dawson_Creek</option> 
					<option value="America/Denver">America/Denver</option> 
					<option value="America/Detroit">America/Detroit</option> 
					<option value="America/Dominica">America/Dominica</option> 
					<option value="America/Edmonton">America/Edmonton</option> 
					<option value="America/Eirunepe">America/Eirunepe</option> 
					<option value="America/El_Salvador">America/El_Salvador</option> 
					<option value="America/Ensenada">America/Ensenada</option> 
					<option value="America/Fort_Wayne">America/Fort_Wayne</option> 
					<option value="America/Fortaleza">America/Fortaleza</option> 
					<option value="America/Glace_Bay">America/Glace_Bay</option> 
					<option value="America/Godthab">America/Godthab</option> 
					<option value="America/Goose_Bay">America/Goose_Bay</option> 
					<option value="America/Grand_Turk">America/Grand_Turk</option> 
					<option value="America/Grenada">America/Grenada</option> 
					<option value="America/Guadeloupe">America/Guadeloupe</option> 
					<option value="America/Guatemala">America/Guatemala</option> 
					<option value="America/Guayaquil">America/Guayaquil</option> 
					<option value="America/Guyana">America/Guyana</option> 
					<option value="America/Halifax">America/Halifax</option> 
					<option value="America/Havana">America/Havana</option> 
					<option value="America/Hermosillo">America/Hermosillo</option> 
					<option value="America/Indiana/Indianapolis">America/Indiana/Indianapolis</option> 
					<option value="America/Indiana/Knox">America/Indiana/Knox</option> 
					<option value="America/Indiana/Marengo">America/Indiana/Marengo</option> 
					<option value="America/Indiana/Petersburg">America/Indiana/Petersburg</option> 
					<option value="America/Indiana/Tell_City">America/Indiana/Tell_City</option> 
					<option value="America/Indiana/Vevay">America/Indiana/Vevay</option> 
					<option value="America/Indiana/Vincennes">America/Indiana/Vincennes</option> 
					<option value="America/Indiana/Winamac">America/Indiana/Winamac</option> 
					<option value="America/Indianapolis">America/Indianapolis</option> 
					<option value="America/Inuvik">America/Inuvik</option> 
					<option value="America/Iqaluit">America/Iqaluit</option> 
					<option value="America/Jamaica">America/Jamaica</option> 
					<option value="America/Jujuy">America/Jujuy</option> 
					<option value="America/Juneau">America/Juneau</option> 
					<option value="America/Kentucky/Louisville">America/Kentucky/Louisville</option> 
					<option value="America/Kentucky/Monticello">America/Kentucky/Monticello</option> 
					<option value="America/Knox_IN">America/Knox_IN</option> 
					<option value="America/La_Paz">America/La_Paz</option> 
					<option value="America/Lima">America/Lima</option> 
					<option value="America/Los_Angeles">America/Los_Angeles</option> 
					<option value="America/Louisville">America/Louisville</option> 
					<option value="America/Maceio">America/Maceio</option> 
					<option value="America/Managua">America/Managua</option> 
					<option value="America/Manaus">America/Manaus</option> 
					<option value="America/Marigot">America/Marigot</option> 
					<option value="America/Martinique">America/Martinique</option> 
					<option value="America/Matamoros">America/Matamoros</option> 
					<option value="America/Mazatlan">America/Mazatlan</option> 
					<option value="America/Mendoza">America/Mendoza</option> 
					<option value="America/Menominee">America/Menominee</option> 
					<option value="America/Merida">America/Merida</option> 
					<option value="America/Mexico_City">America/Mexico_City</option> 
					<option value="America/Miquelon">America/Miquelon</option> 
					<option value="America/Moncton">America/Moncton</option> 
					<option value="America/Monterrey">America/Monterrey</option> 
					<option value="America/Montevideo">America/Montevideo</option> 
					<option value="America/Montreal">America/Montreal</option> 
					<option value="America/Montserrat">America/Montserrat</option> 
					<option value="America/Nassau">America/Nassau</option> 
					<option value="America/New_York">America/New_York</option> 
					<option value="America/Nipigon">America/Nipigon</option> 
					<option value="America/Nome">America/Nome</option> 
					<option value="America/Noronha">America/Noronha</option> 
					<option value="America/North_Dakota/Center">America/North_Dakota/Center</option> 
					<option value="America/North_Dakota/New_Salem">America/North_Dakota/New_Salem</option> 
					<option value="America/Ojinaga">America/Ojinaga</option> 
					<option value="America/Panama">America/Panama</option> 
					<option value="America/Pangnirtung">America/Pangnirtung</option> 
					<option value="America/Paramaribo">America/Paramaribo</option> 
					<option value="America/Phoenix">America/Phoenix</option> 
					<option value="America/Port-au-Prince">America/Port-au-Prince</option> 
					<option value="America/Port_of_Spain">America/Port_of_Spain</option> 
					<option value="America/Porto_Acre">America/Porto_Acre</option> 
					<option value="America/Porto_Velho">America/Porto_Velho</option> 
					<option value="America/Puerto_Rico">America/Puerto_Rico</option> 
					<option value="America/Rainy_River">America/Rainy_River</option> 
					<option value="America/Rankin_Inlet">America/Rankin_Inlet</option> 
					<option value="America/Recife">America/Recife</option> 
					<option value="America/Regina">America/Regina</option> 
					<option value="America/Resolute">America/Resolute</option> 
					<option value="America/Rio_Branco">America/Rio_Branco</option> 
					<option value="America/Rosario">America/Rosario</option> 
					<option value="America/Santa_Isabel">America/Santa_Isabel</option> 
					<option value="America/Santarem">America/Santarem</option> 
					<option value="America/Santiago">America/Santiago</option> 
					<option value="America/Santo_Domingo">America/Santo_Domingo</option> 
					<option value="America/Sao_Paulo">America/Sao_Paulo</option> 
					<option value="America/Scoresbysund">America/Scoresbysund</option> 
					<option value="America/Shiprock">America/Shiprock</option> 
					<option value="America/St_Barthelemy">America/St_Barthelemy</option> 
					<option value="America/St_Johns">America/St_Johns</option> 
					<option value="America/St_Kitts">America/St_Kitts</option> 
					<option value="America/St_Lucia">America/St_Lucia</option> 
					<option value="America/St_Thomas">America/St_Thomas</option> 
					<option value="America/St_Vincent">America/St_Vincent</option> 
					<option value="America/Swift_Current">America/Swift_Current</option> 
					<option value="America/Tegucigalpa">America/Tegucigalpa</option> 
					<option value="America/Thule">America/Thule</option> 
					<option value="America/Thunder_Bay">America/Thunder_Bay</option> 
					<option value="America/Tijuana">America/Tijuana</option> 
					<option value="America/Toronto">America/Toronto</option> 
					<option value="America/Tortola">America/Tortola</option> 
					<option value="America/Vancouver">America/Vancouver</option> 
					<option value="America/Virgin">America/Virgin</option> 
					<option value="America/Whitehorse">America/Whitehorse</option> 
					<option value="America/Winnipeg">America/Winnipeg</option> 
					<option value="America/Yakutat">America/Yakutat</option> 
					<option value="America/Yellowknife">America/Yellowknife</option> 
					<option value="Antarctica/Casey">Antarctica/Casey</option> 
					<option value="Antarctica/Davis">Antarctica/Davis</option> 
					<option value="Antarctica/DumontDUrville">Antarctica/DumontDUrville</option> 
					<option value="Antarctica/Mawson">Antarctica/Mawson</option> 
					<option value="Antarctica/McMurdo">Antarctica/McMurdo</option> 
					<option value="Antarctica/Palmer">Antarctica/Palmer</option> 
					<option value="Antarctica/Rothera">Antarctica/Rothera</option> 
					<option value="Antarctica/South_Pole">Antarctica/South_Pole</option> 
					<option value="Antarctica/Syowa">Antarctica/Syowa</option> 
					<option value="Antarctica/Vostok">Antarctica/Vostok</option> 
					<option value="Arctic/Longyearbyen">Arctic/Longyearbyen</option> 
					<option value="Asia/Aden">Asia/Aden</option> 
					<option value="Asia/Almaty">Asia/Almaty</option> 
					<option value="Asia/Amman">Asia/Amman</option> 
					<option value="Asia/Anadyr">Asia/Anadyr</option> 
					<option value="Asia/Aqtau">Asia/Aqtau</option> 
					<option value="Asia/Aqtobe">Asia/Aqtobe</option> 
					<option value="Asia/Ashgabat">Asia/Ashgabat</option> 
					<option value="Asia/Ashkhabad">Asia/Ashkhabad</option> 
					<option value="Asia/Baghdad">Asia/Baghdad</option> 
					<option value="Asia/Bahrain">Asia/Bahrain</option> 
					<option value="Asia/Baku">Asia/Baku</option> 
					<option value="Asia/Bangkok">Asia/Bangkok</option> 
					<option value="Asia/Beijing">Asia/Beijing</option> 
					<option value="Asia/Beirut">Asia/Beirut</option> 
					<option value="Asia/Bishkek">Asia/Bishkek</option> 
					<option value="Asia/Brunei">Asia/Brunei</option> 
					<option value="Asia/Calcutta">Asia/Calcutta</option> 
					<option value="Asia/Choibalsan">Asia/Choibalsan</option> 
					<option value="Asia/Chongqing">Asia/Chongqing</option> 
					<option value="Asia/Chungking">Asia/Chungking</option> 
					<option value="Asia/Colombo">Asia/Colombo</option> 
					<option value="Asia/Dacca">Asia/Dacca</option> 
					<option value="Asia/Damascus">Asia/Damascus</option> 
					<option value="Asia/Dhaka">Asia/Dhaka</option> 
					<option value="Asia/Dili">Asia/Dili</option> 
					<option value="Asia/Dubai">Asia/Dubai</option> 
					<option value="Asia/Dushanbe">Asia/Dushanbe</option> 
					<option value="Asia/Gaza">Asia/Gaza</option> 
					<option value="Asia/Harbin">Asia/Harbin</option> 
					<option value="Asia/Ho_Chi_Minh">Asia/Ho_Chi_Minh</option> 
					<option value="Asia/Hong_Kong">Asia/Hong_Kong</option> 
					<option value="Asia/Hovd">Asia/Hovd</option> 
					<option value="Asia/Irkutsk">Asia/Irkutsk</option> 
					<option value="Asia/Istanbul">Asia/Istanbul</option> 
					<option value="Asia/Jakarta">Asia/Jakarta</option> 
					<option value="Asia/Jayapura">Asia/Jayapura</option> 
					<option value="Asia/Jerusalem">Asia/Jerusalem</option> 
					<option value="Asia/Kabul">Asia/Kabul</option> 
					<option value="Asia/Kamchatka">Asia/Kamchatka</option> 
					<option value="Asia/Karachi">Asia/Karachi</option> 
					<option value="Asia/Kashgar">Asia/Kashgar</option> 
					<option value="Asia/Kathmandu">Asia/Kathmandu</option> 
					<option value="Asia/Katmandu">Asia/Katmandu</option> 
					<option value="Asia/Kolkata">Asia/Kolkata</option> 
					<option value="Asia/Krasnoyarsk">Asia/Krasnoyarsk</option> 
					<option value="Asia/Kuala_Lumpur">Asia/Kuala_Lumpur</option> 
					<option value="Asia/Kuching">Asia/Kuching</option> 
					<option value="Asia/Kuwait">Asia/Kuwait</option> 
					<option value="Asia/Macao">Asia/Macao</option> 
					<option value="Asia/Macau">Asia/Macau</option> 
					<option value="Asia/Magadan">Asia/Magadan</option> 
					<option value="Asia/Makassar">Asia/Makassar</option> 
					<option value="Asia/Manila">Asia/Manila</option> 
					<option value="Asia/Muscat">Asia/Muscat</option> 
					<option value="Asia/Nicosia">Asia/Nicosia</option> 
					<option value="Asia/Novokuznetsk">Asia/Novokuznetsk</option> 
					<option value="Asia/Novosibirsk">Asia/Novosibirsk</option> 
					<option value="Asia/Omsk">Asia/Omsk</option> 
					<option value="Asia/Oral">Asia/Oral</option> 
					<option value="Asia/Phnom_Penh">Asia/Phnom_Penh</option> 
					<option value="Asia/Pontianak">Asia/Pontianak</option> 
					<option value="Asia/Pyongyang">Asia/Pyongyang</option> 
					<option value="Asia/Qatar">Asia/Qatar</option> 
					<option value="Asia/Qyzylorda">Asia/Qyzylorda</option> 
					<option value="Asia/Rangoon">Asia/Rangoon</option> 
					<option value="Asia/Riyadh">Asia/Riyadh</option> 
					<option value="Asia/Riyadh87">Asia/Riyadh87</option> 
					<option value="Asia/Riyadh88">Asia/Riyadh88</option> 
					<option value="Asia/Riyadh89">Asia/Riyadh89</option> 
					<option value="Asia/Saigon">Asia/Saigon</option> 
					<option value="Asia/Sakhalin">Asia/Sakhalin</option> 
					<option value="Asia/Samarkand">Asia/Samarkand</option> 
					<option value="Asia/Seoul">Asia/Seoul</option> 
					<option value="Asia/Shanghai">Asia/Shanghai</option> 
					<option value="Asia/Singapore">Asia/Singapore</option> 
					<option value="Asia/Taipei">Asia/Taipei</option> 
					<option value="Asia/Tashkent">Asia/Tashkent</option> 
					<option value="Asia/Tbilisi">Asia/Tbilisi</option> 
					<option value="Asia/Tehran">Asia/Tehran</option> 
					<option value="Asia/Tel_Aviv">Asia/Tel_Aviv</option> 
					<option value="Asia/Thimbu">Asia/Thimbu</option> 
					<option value="Asia/Thimphu">Asia/Thimphu</option> 
					<option value="Asia/Tokyo">Asia/Tokyo</option> 
					<option value="Asia/Ujung_Pandang">Asia/Ujung_Pandang</option> 
					<option value="Asia/Ulaanbaatar">Asia/Ulaanbaatar</option> 
					<option value="Asia/Ulan_Bator">Asia/Ulan_Bator</option> 
					<option value="Asia/Urumqi">Asia/Urumqi</option> 
					<option value="Asia/Vientiane">Asia/Vientiane</option> 
					<option value="Asia/Vladivostok">Asia/Vladivostok</option> 
					<option value="Asia/Yakutsk">Asia/Yakutsk</option> 
					<option value="Asia/Yekaterinburg">Asia/Yekaterinburg</option> 
					<option value="Asia/Yerevan">Asia/Yerevan</option> 
					<option value="Atlantic/Azores">Atlantic/Azores</option> 
					<option value="Atlantic/Bermuda">Atlantic/Bermuda</option> 
					<option value="Atlantic/Canary">Atlantic/Canary</option> 
					<option value="Atlantic/Cape_Verde">Atlantic/Cape_Verde</option> 
					<option value="Atlantic/Faeroe">Atlantic/Faeroe</option> 
					<option value="Atlantic/Faroe">Atlantic/Faroe</option> 
					<option value="Atlantic/Jan_Mayen">Atlantic/Jan_Mayen</option> 
					<option value="Atlantic/Madeira">Atlantic/Madeira</option> 
					<option value="Atlantic/Reykjavik">Atlantic/Reykjavik</option> 
					<option value="Atlantic/South_Georgia">Atlantic/South_Georgia</option> 
					<option value="Atlantic/St_Helena">Atlantic/St_Helena</option> 
					<option value="Atlantic/Stanley">Atlantic/Stanley</option> 
					<option value="Australia/ACT">Australia/ACT</option> 
					<option value="Australia/Adelaide">Australia/Adelaide</option> 
					<option value="Australia/Brisbane">Australia/Brisbane</option> 
					<option value="Australia/Broken_Hill">Australia/Broken_Hill</option> 
					<option value="Australia/Canberra">Australia/Canberra</option> 
					<option value="Australia/Currie">Australia/Currie</option> 
					<option value="Australia/Darwin">Australia/Darwin</option> 
					<option value="Australia/Eucla">Australia/Eucla</option> 
					<option value="Australia/Hobart">Australia/Hobart</option> 
					<option value="Australia/LHI">Australia/LHI</option> 
					<option value="Australia/Lindeman">Australia/Lindeman</option> 
					<option value="Australia/Lord_Howe">Australia/Lord_Howe</option> 
					<option value="Australia/Melbourne">Australia/Melbourne</option> 
					<option value="Australia/NSW">Australia/NSW</option> 
					<option value="Australia/North">Australia/North</option> 
					<option value="Australia/Perth">Australia/Perth</option> 
					<option value="Australia/Queensland">Australia/Queensland</option> 
					<option value="Australia/South">Australia/South</option> 
					<option value="Australia/Sydney">Australia/Sydney</option> 
					<option value="Australia/Tasmania">Australia/Tasmania</option> 
					<option value="Australia/Victoria">Australia/Victoria</option> 
					<option value="Australia/West">Australia/West</option> 
					<option value="Australia/Yancowinna">Australia/Yancowinna</option> 
					<option value="Brazil/Acre">Brazil/Acre</option> 
					<option value="Brazil/DeNoronha">Brazil/DeNoronha</option> 
					<option value="Brazil/East">Brazil/East</option> 
					<option value="Brazil/West">Brazil/West</option> 
					<option value="CET">CET</option> 
					<option value="CST6CDT">CST6CDT</option> 
					<option value="Canada/Atlantic">Canada/Atlantic</option> 
					<option value="Canada/Central">Canada/Central</option> 
					<option value="Canada/East-Saskatchewan">Canada/East-Saskatchewan</option> 
					<option value="Canada/Eastern">Canada/Eastern</option> 
					<option value="Canada/Mountain">Canada/Mountain</option> 
					<option value="Canada/Newfoundland">Canada/Newfoundland</option> 
					<option value="Canada/Pacific">Canada/Pacific</option> 
					<option value="Canada/Saskatchewan">Canada/Saskatchewan</option> 
					<option value="Canada/Yukon">Canada/Yukon</option> 
					<option value="Chile/Continental">Chile/Continental</option> 
					<option value="Chile/EasterIsland">Chile/EasterIsland</option> 
					<option value="Cuba">Cuba</option> 
					<option value="EET">EET</option> 
					<option value="EST">EST</option> 
					<option value="EST5EDT">EST5EDT</option> 
					<option value="Egypt">Egypt</option> 
					<option value="Eire">Eire</option> 
					<option value="Etc/GMT">Etc/GMT</option> 
					<option value="Etc/GMT+0">Etc/GMT+0</option> 
					<option value="Etc/GMT+1">Etc/GMT+1</option> 
					<option value="Etc/GMT+10">Etc/GMT+10</option> 
					<option value="Etc/GMT+11">Etc/GMT+11</option> 
					<option value="Etc/GMT+12">Etc/GMT+12</option> 
					<option value="Etc/GMT+2">Etc/GMT+2</option> 
					<option value="Etc/GMT+3">Etc/GMT+3</option> 
					<option value="Etc/GMT+4">Etc/GMT+4</option> 
					<option value="Etc/GMT+5">Etc/GMT+5</option> 
					<option value="Etc/GMT+6">Etc/GMT+6</option> 
					<option value="Etc/GMT+7">Etc/GMT+7</option> 
					<option value="Etc/GMT+8">Etc/GMT+8</option> 
					<option value="Etc/GMT+9">Etc/GMT+9</option> 
					<option value="Etc/GMT-0">Etc/GMT-0</option> 
					<option value="Etc/GMT-1">Etc/GMT-1</option> 
					<option value="Etc/GMT-10">Etc/GMT-10</option> 
					<option value="Etc/GMT-11">Etc/GMT-11</option> 
					<option value="Etc/GMT-12">Etc/GMT-12</option> 
					<option value="Etc/GMT-13">Etc/GMT-13</option> 
					<option value="Etc/GMT-14">Etc/GMT-14</option> 
					<option value="Etc/GMT-2">Etc/GMT-2</option> 
					<option value="Etc/GMT-3">Etc/GMT-3</option> 
					<option value="Etc/GMT-4">Etc/GMT-4</option> 
					<option value="Etc/GMT-5">Etc/GMT-5</option> 
					<option value="Etc/GMT-6">Etc/GMT-6</option> 
					<option value="Etc/GMT-7">Etc/GMT-7</option> 
					<option value="Etc/GMT-8">Etc/GMT-8</option> 
					<option value="Etc/GMT-9">Etc/GMT-9</option> 
					<option value="Etc/GMT0">Etc/GMT0</option> 
					<option value="Etc/Greenwich">Etc/Greenwich</option> 
					<option value="Etc/UCT">Etc/UCT</option> 
					<option value="Etc/UTC">Etc/UTC</option> 
					<option value="Etc/Universal">Etc/Universal</option> 
					<option value="Etc/Zulu">Etc/Zulu</option> 
					<option value="Europe/Amsterdam">Europe/Amsterdam</option> 
					<option value="Europe/Andorra">Europe/Andorra</option> 
					<option value="Europe/Athens">Europe/Athens</option> 
					<option value="Europe/Belfast">Europe/Belfast</option> 
					<option value="Europe/Belgrade">Europe/Belgrade</option> 
					<option value="Europe/Berlin">Europe/Berlin</option> 
					<option value="Europe/Bratislava">Europe/Bratislava</option> 
					<option value="Europe/Brussels">Europe/Brussels</option> 
					<option value="Europe/Bucharest">Europe/Bucharest</option> 
					<option value="Europe/Budapest">Europe/Budapest</option> 
					<option value="Europe/Chisinau">Europe/Chisinau</option> 
					<option value="Europe/Copenhagen">Europe/Copenhagen</option> 
					<option value="Europe/Dublin">Europe/Dublin</option> 
					<option value="Europe/Gibraltar">Europe/Gibraltar</option> 
					<option value="Europe/Guernsey">Europe/Guernsey</option> 
					<option value="Europe/Helsinki">Europe/Helsinki</option> 
					<option value="Europe/Isle_of_Man">Europe/Isle_of_Man</option> 
					<option value="Europe/Istanbul">Europe/Istanbul</option> 
					<option value="Europe/Jersey">Europe/Jersey</option> 
					<option value="Europe/Kaliningrad">Europe/Kaliningrad</option> 
					<option value="Europe/Kiev">Europe/Kiev</option> 
					<option value="Europe/Lisbon">Europe/Lisbon</option> 
					<option value="Europe/Ljubljana">Europe/Ljubljana</option> 
					<option value="Europe/London">Europe/London</option> 
					<option value="Europe/Luxembourg">Europe/Luxembourg</option> 
					<option value="Europe/Madrid">Europe/Madrid</option> 
					<option value="Europe/Malta">Europe/Malta</option> 
					<option value="Europe/Mariehamn">Europe/Mariehamn</option> 
					<option value="Europe/Minsk">Europe/Minsk</option> 
					<option value="Europe/Monaco">Europe/Monaco</option> 
					<option value="Europe/Moscow">Europe/Moscow</option> 
					<option value="Europe/Nicosia">Europe/Nicosia</option> 
					<option value="Europe/Oslo">Europe/Oslo</option> 
					<option value="Europe/Paris">Europe/Paris</option> 
					<option value="Europe/Podgorica">Europe/Podgorica</option> 
					<option value="Europe/Prague">Europe/Prague</option> 
					<option value="Europe/Riga">Europe/Riga</option> 
					<option value="Europe/Rome">Europe/Rome</option> 
					<option value="Europe/Samara">Europe/Samara</option> 
					<option value="Europe/San_Marino">Europe/San_Marino</option> 
					<option value="Europe/Sarajevo">Europe/Sarajevo</option> 
					<option value="Europe/Simferopol">Europe/Simferopol</option> 
					<option value="Europe/Skopje">Europe/Skopje</option> 
					<option value="Europe/Sofia">Europe/Sofia</option> 
					<option value="Europe/Stockholm">Europe/Stockholm</option> 
					<option value="Europe/Tallinn">Europe/Tallinn</option> 
					<option value="Europe/Tirane">Europe/Tirane</option> 
					<option value="Europe/Tiraspol">Europe/Tiraspol</option> 
					<option value="Europe/Uzhgorod">Europe/Uzhgorod</option> 
					<option value="Europe/Vaduz">Europe/Vaduz</option> 
					<option value="Europe/Vatican">Europe/Vatican</option> 
					<option value="Europe/Vienna">Europe/Vienna</option> 
					<option value="Europe/Vilnius">Europe/Vilnius</option> 
					<option value="Europe/Volgograd">Europe/Volgograd</option> 
					<option value="Europe/Warsaw">Europe/Warsaw</option> 
					<option value="Europe/Zagreb">Europe/Zagreb</option> 
					<option value="Europe/Zaporozhye">Europe/Zaporozhye</option> 
					<option value="Europe/Zurich">Europe/Zurich</option> 
					<option value="Factory">Factory</option> 
					<option value="GB">GB</option> 
					<option value="GB-Eire">GB-Eire</option> 
					<option value="GMT" selected="selected">GMT</option> 
					<option value="Greenwich">Greenwich</option> 
					<option value="HST">HST</option> 
					<option value="Hongkong">Hongkong</option> 
					<option value="Iceland">Iceland</option> 
					<option value="Indian/Antananarivo">Indian/Antananarivo</option> 
					<option value="Indian/Chagos">Indian/Chagos</option> 
					<option value="Indian/Christmas">Indian/Christmas</option> 
					<option value="Indian/Cocos">Indian/Cocos</option> 
					<option value="Indian/Comoro">Indian/Comoro</option> 
					<option value="Indian/Kerguelen">Indian/Kerguelen</option> 
					<option value="Indian/Mahe">Indian/Mahe</option> 
					<option value="Indian/Maldives">Indian/Maldives</option> 
					<option value="Indian/Mauritius">Indian/Mauritius</option> 
					<option value="Indian/Mayotte">Indian/Mayotte</option> 
					<option value="Indian/Reunion">Indian/Reunion</option> 
					<option value="Iran">Iran</option> 
					<option value="Israel">Israel</option> 
					<option value="Jamaica">Jamaica</option> 
					<option value="Japan">Japan</option> 
					<option value="Kwajalein">Kwajalein</option> 
					<option value="Libya">Libya</option> 
					<option value="MET">MET</option> 
					<option value="MST">MST</option> 
					<option value="MST7MDT">MST7MDT</option> 
					<option value="Mexico/BajaNorte">Mexico/BajaNorte</option> 
					<option value="Mexico/BajaSur">Mexico/BajaSur</option> 
					<option value="Mexico/General">Mexico/General</option> 
					<option value="Mideast/Riyadh87">Mideast/Riyadh87</option> 
					<option value="Mideast/Riyadh88">Mideast/Riyadh88</option> 
					<option value="Mideast/Riyadh89">Mideast/Riyadh89</option> 
					<option value="NZ">NZ</option> 
					<option value="NZ-CHAT">NZ-CHAT</option> 
					<option value="Navajo">Navajo</option> 
					<option value="PRC">PRC</option> 
					<option value="PST8PDT">PST8PDT</option> 
					<option value="Pacific/Apia">Pacific/Apia</option> 
					<option value="Pacific/Auckland">Pacific/Auckland</option> 
					<option value="Pacific/Chatham">Pacific/Chatham</option> 
					<option value="Pacific/Easter">Pacific/Easter</option> 
					<option value="Pacific/Efate">Pacific/Efate</option> 
					<option value="Pacific/Enderbury">Pacific/Enderbury</option> 
					<option value="Pacific/Fakaofo">Pacific/Fakaofo</option> 
					<option value="Pacific/Fiji">Pacific/Fiji</option> 
					<option value="Pacific/Funafuti">Pacific/Funafuti</option> 
					<option value="Pacific/Galapagos">Pacific/Galapagos</option> 
					<option value="Pacific/Gambier">Pacific/Gambier</option> 
					<option value="Pacific/Guadalcanal">Pacific/Guadalcanal</option> 
					<option value="Pacific/Guam">Pacific/Guam</option> 
					<option value="Pacific/Honolulu">Pacific/Honolulu</option> 
					<option value="Pacific/Johnston">Pacific/Johnston</option> 
					<option value="Pacific/Kiritimati">Pacific/Kiritimati</option> 
					<option value="Pacific/Kosrae">Pacific/Kosrae</option> 
					<option value="Pacific/Kwajalein">Pacific/Kwajalein</option> 
					<option value="Pacific/Majuro">Pacific/Majuro</option> 
					<option value="Pacific/Marquesas">Pacific/Marquesas</option> 
					<option value="Pacific/Midway">Pacific/Midway</option> 
					<option value="Pacific/Nauru">Pacific/Nauru</option> 
					<option value="Pacific/Niue">Pacific/Niue</option> 
					<option value="Pacific/Norfolk">Pacific/Norfolk</option> 
					<option value="Pacific/Noumea">Pacific/Noumea</option> 
					<option value="Pacific/Pago_Pago">Pacific/Pago_Pago</option> 
					<option value="Pacific/Palau">Pacific/Palau</option> 
					<option value="Pacific/Pitcairn">Pacific/Pitcairn</option> 
					<option value="Pacific/Ponape">Pacific/Ponape</option> 
					<option value="Pacific/Port_Moresby">Pacific/Port_Moresby</option> 
					<option value="Pacific/Rarotonga">Pacific/Rarotonga</option> 
					<option value="Pacific/Saipan">Pacific/Saipan</option> 
					<option value="Pacific/Samoa">Pacific/Samoa</option> 
					<option value="Pacific/Tahiti">Pacific/Tahiti</option> 
					<option value="Pacific/Tarawa">Pacific/Tarawa</option> 
					<option value="Pacific/Tongatapu">Pacific/Tongatapu</option> 
					<option value="Pacific/Truk">Pacific/Truk</option> 
					<option value="Pacific/Wake">Pacific/Wake</option> 
					<option value="Pacific/Wallis">Pacific/Wallis</option> 
					<option value="Pacific/Yap">Pacific/Yap</option> 
					<option value="Poland">Poland</option> 
					<option value="Portugal">Portugal</option> 
					<option value="ROC">ROC</option> 
					<option value="ROK">ROK</option> 
					<option value="Singapore">Singapore</option> 
					<option value="Turkey">Turkey</option> 
					<option value="UCT">UCT</option> 
					<option value="US/Alaska">US/Alaska</option> 
					<option value="US/Aleutian">US/Aleutian</option> 
					<option value="US/Arizona">US/Arizona</option> 
					<option value="US/Central">US/Central</option> 
					<option value="US/East-Indiana">US/East-Indiana</option> 
					<option value="US/Eastern">US/Eastern</option> 
					<option value="US/Hawaii">US/Hawaii</option> 
					<option value="US/Indiana-Starke">US/Indiana-Starke</option> 
					<option value="US/Michigan">US/Michigan</option> 
					<option value="US/Mountain">US/Mountain</option> 
					<option value="US/Pacific">US/Pacific</option> 
					<option value="US/Pacific-New">US/Pacific-New</option> 
					<option value="US/Samoa">US/Samoa</option> 
					<option value="Universal">Universal</option> 
					<option value="W-SU">W-SU</option> 
					<option value="WET">WET</option> 
					<option value="Zulu">Zulu</option> 
			</select>
0

Ahh are you suggesting to allow the user to enter this upon login? Although I've learned how to do a login system I don't need it on this site. Cheers for that though, will definitely utilise it when needed!

0

I understood what you meant.
For simplicity, I assume you're storing the unix timestamp as posting datetime.
This caused me no end of bother when I tried to get my head around it.
I think I understand it now, but if I'm wrong, I'd appreciate somebody pointing it out...

The timestamp is universal for a particular moment in time anywhere on the planet. So

The timestamp 1315257804
means
Monday September 05, 2011 21:23:24 for GMT
Monday September 05, 2011 16:23:24 for US/Central [GMT-5]
Tuesday September 06, 2011 07:23:24 for Australia/NSW [GMT+10]

It's the timezone that gives the converted time any meaning. If you set the timezone for an user (or set a default one), then all times will be in that timezone. Perhaps that was obvious, I don't know.

I don't think you need to set a timezone for inputting data, just the retrieval, if you want to show it in the user's preferred TZ.

Sorry if you knew all that already (or if I've totally got the wrong end of the stick).

0

That just confused me a little bit but I think I know what you're trying to say.

If sometime I require people to sign up to a website all I have to do is to allow them to chose their region from those options, post the specific region, receive the region in a php file and post it here: date_default_timezone_set("$_POST"); So when each person logs in, they are shown a time according to their region, it seems simple enough to incorporate but I was hoping to do that without asking them for their region upon registration. I.e. if any random person visits my website, I wanted the time to be set according to them.

This way is good though, facebook does it without the need for chosing your region but the reason for that is they have different suffixes for their site made for each country i.e. ".co.uk" etc.

This option is good for now though. Thanks again mate

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