Epoch Converter
Time zone list / Epoch to time zone converter
There is only one Unix time and it is created by using the UTC/GMT time zone. This means you might have convert time zones to calculate timestamps. Most programming languages have libraries to help you converting time zones, calculating by hand might not be a good idea because of the variety of time zones en daylight saving times. But here's a list of time zones and offset in seconds.
Convert epoch to other time zone
Time zones
The 'Converted timestamp' column shows the time for Unix timestamp 1531666800 (Jul 15 2018 15:00:00 UTC/GMT).
| Region (time zone) | Converted timestamp 1531666800 |
Relative to UTC/ |
Date in DST |
Offset In seconds |
|---|---|---|---|---|
| Africa | ||||
| Africa/Abidjan (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Africa/Accra (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Africa/Addis Ababa (EAT) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Africa/Algiers (CET) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/Asmara (EAT) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Africa/Bamako (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Africa/Bangui (WAT) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/Banjul (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Africa/Bissau (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Africa/Blantyre (CAT) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Brazzaville (WAT) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/Bujumbura (CAT) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Cairo (EET) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Casablanca (+01) | Jul 15 2018 16:00:00 | GMT +01:00 | DST | +3600 |
| Africa/Ceuta (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Africa/Conakry (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Africa/Dakar (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Africa/Dar es Salaam (EAT) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Africa/Djibouti (EAT) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Africa/Douala (WAT) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/El Aaiun (+01) | Jul 15 2018 16:00:00 | GMT +01:00 | DST | +3600 |
| Africa/Freetown (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Africa/Gaborone (CAT) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Harare (CAT) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Johannesburg (SAST) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Juba (EAT) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Africa/Kampala (EAT) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Africa/Khartoum (CAT) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Kigali (CAT) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Kinshasa (WAT) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/Lagos (WAT) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/Libreville (WAT) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/Lome (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Africa/Luanda (WAT) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/Lubumbashi (CAT) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Lusaka (CAT) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Malabo (WAT) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/Maputo (CAT) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Maseru (SAST) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Mbabane (SAST) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Mogadishu (EAT) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Africa/Monrovia (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Africa/Nairobi (EAT) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Africa/Ndjamena (WAT) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/Niamey (WAT) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/Nouakchott (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Africa/Ouagadougou (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Africa/Porto-Novo (WAT) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/Sao Tome (WAT) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/Tripoli (EET) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Africa/Tunis (CET) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Africa/Windhoek (CAT) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| America | ||||
| America/Adak (HDT) | Jul 15 2018 06:00:00 | GMT -09:00 | DST | -32400 |
| America/Anchorage (AKDT) | Jul 15 2018 07:00:00 | GMT -08:00 | DST | -28800 |
| America/Anguilla (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Antigua (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Araguaina (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Argentina/Buenos Aires (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Argentina/Catamarca (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Argentina/Cordoba (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Argentina/Jujuy (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Argentina/La Rioja (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Argentina/Mendoza (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Argentina/Rio Gallegos (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Argentina/Salta (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Argentina/San Juan (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Argentina/San Luis (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Argentina/Tucuman (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Argentina/Ushuaia (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Aruba (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Asuncion (-04) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Atikokan (EST) | Jul 15 2018 10:00:00 | GMT -05:00 | -18000 | |
| America/Bahia (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Bahia Banderas (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/Barbados (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Belem (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Belize (CST) | Jul 15 2018 09:00:00 | GMT -06:00 | -21600 | |
| America/Blanc-Sablon (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Boa Vista (-04) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Bogota (-05) | Jul 15 2018 10:00:00 | GMT -05:00 | -18000 | |
| America/Boise (MDT) | Jul 15 2018 09:00:00 | GMT -06:00 | DST | -21600 |
| America/Cambridge Bay (MDT) | Jul 15 2018 09:00:00 | GMT -06:00 | DST | -21600 |
| America/Campo Grande (-04) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Cancun (EST) | Jul 15 2018 10:00:00 | GMT -05:00 | -18000 | |
| America/Caracas (-04) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Cayenne (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Cayman (EST) | Jul 15 2018 10:00:00 | GMT -05:00 | -18000 | |
| America/Chicago (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/Chihuahua (MDT) | Jul 15 2018 09:00:00 | GMT -06:00 | DST | -21600 |
| America/Costa Rica (CST) | Jul 15 2018 09:00:00 | GMT -06:00 | -21600 | |
| America/Creston (MST) | Jul 15 2018 08:00:00 | GMT -07:00 | -25200 | |
| America/Cuiaba (-04) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Curacao (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Danmarkshavn (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| America/Dawson (PDT) | Jul 15 2018 08:00:00 | GMT -07:00 | DST | -25200 |
| America/Dawson Creek (MST) | Jul 15 2018 08:00:00 | GMT -07:00 | -25200 | |
| America/Denver (MDT) | Jul 15 2018 09:00:00 | GMT -06:00 | DST | -21600 |
| America/Detroit (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Dominica (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Edmonton (MDT) | Jul 15 2018 09:00:00 | GMT -06:00 | DST | -21600 |
| America/Eirunepe (-05) | Jul 15 2018 10:00:00 | GMT -05:00 | -18000 | |
| America/El Salvador (CST) | Jul 15 2018 09:00:00 | GMT -06:00 | -21600 | |
| America/Fort Nelson (MST) | Jul 15 2018 08:00:00 | GMT -07:00 | -25200 | |
| America/Fortaleza (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Glace Bay (ADT) | Jul 15 2018 12:00:00 | GMT -03:00 | DST | -10800 |
| America/Goose Bay (ADT) | Jul 15 2018 12:00:00 | GMT -03:00 | DST | -10800 |
| America/Grand Turk (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Grenada (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Guadeloupe (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Guatemala (CST) | Jul 15 2018 09:00:00 | GMT -06:00 | -21600 | |
| America/Guayaquil (-05) | Jul 15 2018 10:00:00 | GMT -05:00 | -18000 | |
| America/Guyana (-04) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Halifax (ADT) | Jul 15 2018 12:00:00 | GMT -03:00 | DST | -10800 |
| America/Havana (CDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Hermosillo (MST) | Jul 15 2018 08:00:00 | GMT -07:00 | -25200 | |
| America/Indiana/Indianapolis (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Indiana/Knox (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/Indiana/Marengo (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Indiana/Petersburg (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Indiana/Tell City (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/Indiana/Vevay (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Indiana/Vincennes (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Indiana/Winamac (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Inuvik (MDT) | Jul 15 2018 09:00:00 | GMT -06:00 | DST | -21600 |
| America/Iqaluit (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Jamaica (EST) | Jul 15 2018 10:00:00 | GMT -05:00 | -18000 | |
| America/Juneau (AKDT) | Jul 15 2018 07:00:00 | GMT -08:00 | DST | -28800 |
| America/Kentucky/Louisville (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Kentucky/Monticello (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Kralendijk (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/La Paz (-04) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Lima (-05) | Jul 15 2018 10:00:00 | GMT -05:00 | -18000 | |
| America/Los Angeles (PDT) | Jul 15 2018 08:00:00 | GMT -07:00 | DST | -25200 |
| America/Lower Princes (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Maceio (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Managua (CST) | Jul 15 2018 09:00:00 | GMT -06:00 | -21600 | |
| America/Manaus (-04) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Marigot (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Martinique (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Matamoros (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/Mazatlan (MDT) | Jul 15 2018 09:00:00 | GMT -06:00 | DST | -21600 |
| America/Menominee (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/Merida (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/Metlakatla (AKDT) | Jul 15 2018 07:00:00 | GMT -08:00 | DST | -28800 |
| America/Mexico City (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/Miquelon (-02) | Jul 15 2018 13:00:00 | GMT -02:00 | DST | -7200 |
| America/Moncton (ADT) | Jul 15 2018 12:00:00 | GMT -03:00 | DST | -10800 |
| America/Monterrey (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/Montevideo (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Montserrat (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Nassau (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/New York (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Nome (AKDT) | Jul 15 2018 07:00:00 | GMT -08:00 | DST | -28800 |
| America/Noronha (-02) | Jul 15 2018 13:00:00 | GMT -02:00 | -7200 | |
| America/North Dakota/Beulah (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/North Dakota/Center (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/North Dakota/New Salem (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/Nuuk (-02) | Jul 15 2018 13:00:00 | GMT -02:00 | DST | -7200 |
| America/Ojinaga (MDT) | Jul 15 2018 09:00:00 | GMT -06:00 | DST | -21600 |
| America/Panama (EST) | Jul 15 2018 10:00:00 | GMT -05:00 | -18000 | |
| America/Pangnirtung (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Paramaribo (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Phoenix (MST) | Jul 15 2018 08:00:00 | GMT -07:00 | -25200 | |
| America/Port-au-Prince (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Port of Spain (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Porto Velho (-04) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Puerto Rico (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Punta Arenas (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Rankin Inlet (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/Recife (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Regina (CST) | Jul 15 2018 09:00:00 | GMT -06:00 | -21600 | |
| America/Resolute (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/Rio Branco (-05) | Jul 15 2018 10:00:00 | GMT -05:00 | -18000 | |
| America/Santarem (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Santiago (-04) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Santo Domingo (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Sao Paulo (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| America/Scoresbysund (+00) | Jul 15 2018 15:00:00 | GMT +00:00 | DST | 0 |
| America/Sitka (AKDT) | Jul 15 2018 07:00:00 | GMT -08:00 | DST | -28800 |
| America/St Barthelemy (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/St Johns (NDT) | Jul 15 2018 12:30:00 | GMT -02:30 | DST | -9000 |
| America/St Kitts (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/St Lucia (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/St Thomas (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/St Vincent (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Swift Current (CST) | Jul 15 2018 09:00:00 | GMT -06:00 | -21600 | |
| America/Tegucigalpa (CST) | Jul 15 2018 09:00:00 | GMT -06:00 | -21600 | |
| America/Thule (ADT) | Jul 15 2018 12:00:00 | GMT -03:00 | DST | -10800 |
| America/Tijuana (PDT) | Jul 15 2018 08:00:00 | GMT -07:00 | DST | -25200 |
| America/Toronto (EDT) | Jul 15 2018 11:00:00 | GMT -04:00 | DST | -14400 |
| America/Tortola (AST) | Jul 15 2018 11:00:00 | GMT -04:00 | -14400 | |
| America/Vancouver (PDT) | Jul 15 2018 08:00:00 | GMT -07:00 | DST | -25200 |
| America/Whitehorse (PDT) | Jul 15 2018 08:00:00 | GMT -07:00 | DST | -25200 |
| America/Winnipeg (CDT) | Jul 15 2018 10:00:00 | GMT -05:00 | DST | -18000 |
| America/Yakutat (AKDT) | Jul 15 2018 07:00:00 | GMT -08:00 | DST | -28800 |
| America/Yellowknife (MDT) | Jul 15 2018 09:00:00 | GMT -06:00 | DST | -21600 |
| Antarctica | ||||
| Antarctica/Casey (+08) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Antarctica/Davis (+07) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Antarctica/DumontDUrville (+10) | Jul 16 2018 01:00:00 | GMT +10:00 | +36000 | |
| Antarctica/Macquarie (AEST) | Jul 16 2018 01:00:00 | GMT +10:00 | +36000 | |
| Antarctica/Mawson (+05) | Jul 15 2018 20:00:00 | GMT +05:00 | +18000 | |
| Antarctica/McMurdo (NZST) | Jul 16 2018 03:00:00 | GMT +12:00 | +43200 | |
| Antarctica/Palmer (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| Antarctica/Rothera (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| Antarctica/Syowa (+03) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Antarctica/Troll (+02) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Antarctica/Vostok (+06) | Jul 15 2018 21:00:00 | GMT +06:00 | +21600 | |
| Arctic | ||||
| Arctic/Longyearbyen (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Asia | ||||
| Asia/Aden (+03) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Asia/Almaty (+06) | Jul 15 2018 21:00:00 | GMT +06:00 | +21600 | |
| Asia/Amman (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Asia/Anadyr (+12) | Jul 16 2018 03:00:00 | GMT +12:00 | +43200 | |
| Asia/Aqtau (+05) | Jul 15 2018 20:00:00 | GMT +05:00 | +18000 | |
| Asia/Aqtobe (+05) | Jul 15 2018 20:00:00 | GMT +05:00 | +18000 | |
| Asia/Ashgabat (+05) | Jul 15 2018 20:00:00 | GMT +05:00 | +18000 | |
| Asia/Atyrau (+05) | Jul 15 2018 20:00:00 | GMT +05:00 | +18000 | |
| Asia/Baghdad (+03) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Asia/Bahrain (+03) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Asia/Baku (+04) | Jul 15 2018 19:00:00 | GMT +04:00 | +14400 | |
| Asia/Bangkok (+07) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Asia/Barnaul (+07) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Asia/Beirut (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Asia/Bishkek (+06) | Jul 15 2018 21:00:00 | GMT +06:00 | +21600 | |
| Asia/Brunei (+08) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Asia/Chita (+09) | Jul 16 2018 00:00:00 | GMT +09:00 | +32400 | |
| Asia/Choibalsan (+08) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Asia/Colombo (+0530) | Jul 15 2018 20:30:00 | GMT +05:30 | +19800 | |
| Asia/Damascus (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Asia/Dhaka (+06) | Jul 15 2018 21:00:00 | GMT +06:00 | +21600 | |
| Asia/Dili (+09) | Jul 16 2018 00:00:00 | GMT +09:00 | +32400 | |
| Asia/Dubai (+04) | Jul 15 2018 19:00:00 | GMT +04:00 | +14400 | |
| Asia/Dushanbe (+05) | Jul 15 2018 20:00:00 | GMT +05:00 | +18000 | |
| Asia/Famagusta (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Asia/Gaza (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Asia/Hebron (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Asia/Ho Chi Minh (+07) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Asia/Hong Kong (HKT) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Asia/Hovd (+07) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Asia/Irkutsk (+08) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Asia/Jakarta (WIB) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Asia/Jayapura (WIT) | Jul 16 2018 00:00:00 | GMT +09:00 | +32400 | |
| Asia/Jerusalem (IDT) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Asia/Kabul (+0430) | Jul 15 2018 19:30:00 | GMT +04:30 | +16200 | |
| Asia/Kamchatka (+12) | Jul 16 2018 03:00:00 | GMT +12:00 | +43200 | |
| Asia/Karachi (PKT) | Jul 15 2018 20:00:00 | GMT +05:00 | +18000 | |
| Asia/Kathmandu (+0545) | Jul 15 2018 20:45:00 | GMT +05:45 | +20700 | |
| Asia/Khandyga (+09) | Jul 16 2018 00:00:00 | GMT +09:00 | +32400 | |
| Asia/Kolkata (IST) | Jul 15 2018 20:30:00 | GMT +05:30 | +19800 | |
| Asia/Krasnoyarsk (+07) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Asia/Kuala Lumpur (+08) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Asia/Kuching (+08) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Asia/Kuwait (+03) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Asia/Macau (CST) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Asia/Magadan (+11) | Jul 16 2018 02:00:00 | GMT +11:00 | +39600 | |
| Asia/Makassar (WITA) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Asia/Manila (PST) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Asia/Muscat (+04) | Jul 15 2018 19:00:00 | GMT +04:00 | +14400 | |
| Asia/Nicosia (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Asia/Novokuznetsk (+07) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Asia/Novosibirsk (+07) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Asia/Omsk (+06) | Jul 15 2018 21:00:00 | GMT +06:00 | +21600 | |
| Asia/Oral (+05) | Jul 15 2018 20:00:00 | GMT +05:00 | +18000 | |
| Asia/Phnom Penh (+07) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Asia/Pontianak (WIB) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Asia/Pyongyang (KST) | Jul 16 2018 00:00:00 | GMT +09:00 | +32400 | |
| Asia/Qatar (+03) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Asia/Qostanay (+06) | Jul 15 2018 21:00:00 | GMT +06:00 | +21600 | |
| Asia/Qyzylorda (+06) | Jul 15 2018 21:00:00 | GMT +06:00 | +21600 | |
| Asia/Riyadh (+03) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Asia/Sakhalin (+11) | Jul 16 2018 02:00:00 | GMT +11:00 | +39600 | |
| Asia/Samarkand (+05) | Jul 15 2018 20:00:00 | GMT +05:00 | +18000 | |
| Asia/Seoul (KST) | Jul 16 2018 00:00:00 | GMT +09:00 | +32400 | |
| Asia/Shanghai (CST) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Asia/Singapore (+08) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Asia/Srednekolymsk (+11) | Jul 16 2018 02:00:00 | GMT +11:00 | +39600 | |
| Asia/Taipei (CST) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Asia/Tashkent (+05) | Jul 15 2018 20:00:00 | GMT +05:00 | +18000 | |
| Asia/Tbilisi (+04) | Jul 15 2018 19:00:00 | GMT +04:00 | +14400 | |
| Asia/Tehran (+0430) | Jul 15 2018 19:30:00 | GMT +04:30 | DST | +16200 |
| Asia/Thimphu (+06) | Jul 15 2018 21:00:00 | GMT +06:00 | +21600 | |
| Asia/Tokyo (JST) | Jul 16 2018 00:00:00 | GMT +09:00 | +32400 | |
| Asia/Tomsk (+07) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Asia/Ulaanbaatar (+08) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Asia/Urumqi (+06) | Jul 15 2018 21:00:00 | GMT +06:00 | +21600 | |
| Asia/Ust-Nera (+10) | Jul 16 2018 01:00:00 | GMT +10:00 | +36000 | |
| Asia/Vientiane (+07) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Asia/Vladivostok (+10) | Jul 16 2018 01:00:00 | GMT +10:00 | +36000 | |
| Asia/Yakutsk (+09) | Jul 16 2018 00:00:00 | GMT +09:00 | +32400 | |
| Asia/Yangon (+0630) | Jul 15 2018 21:30:00 | GMT +06:30 | +23400 | |
| Asia/Yekaterinburg (+05) | Jul 15 2018 20:00:00 | GMT +05:00 | +18000 | |
| Asia/Yerevan (+04) | Jul 15 2018 19:00:00 | GMT +04:00 | +14400 | |
| Atlantic | ||||
| Atlantic/Azores (+00) | Jul 15 2018 15:00:00 | GMT +00:00 | DST | 0 |
| Atlantic/Bermuda (ADT) | Jul 15 2018 12:00:00 | GMT -03:00 | DST | -10800 |
| Atlantic/Canary (WEST) | Jul 15 2018 16:00:00 | GMT +01:00 | DST | +3600 |
| Atlantic/Cape Verde (-01) | Jul 15 2018 14:00:00 | GMT -01:00 | -3600 | |
| Atlantic/Faroe (WEST) | Jul 15 2018 16:00:00 | GMT +01:00 | DST | +3600 |
| Atlantic/Madeira (WEST) | Jul 15 2018 16:00:00 | GMT +01:00 | DST | +3600 |
| Atlantic/Reykjavik (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Atlantic/South Georgia (-02) | Jul 15 2018 13:00:00 | GMT -02:00 | -7200 | |
| Atlantic/St Helena (GMT) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
| Atlantic/Stanley (-03) | Jul 15 2018 12:00:00 | GMT -03:00 | -10800 | |
| Australia | ||||
| Australia/Adelaide (ACST) | Jul 16 2018 00:30:00 | GMT +09:30 | +34200 | |
| Australia/Brisbane (AEST) | Jul 16 2018 01:00:00 | GMT +10:00 | +36000 | |
| Australia/Broken Hill (ACST) | Jul 16 2018 00:30:00 | GMT +09:30 | +34200 | |
| Australia/Darwin (ACST) | Jul 16 2018 00:30:00 | GMT +09:30 | +34200 | |
| Australia/Eucla (+0845) | Jul 15 2018 23:45:00 | GMT +08:45 | +31500 | |
| Australia/Hobart (AEST) | Jul 16 2018 01:00:00 | GMT +10:00 | +36000 | |
| Australia/Lindeman (AEST) | Jul 16 2018 01:00:00 | GMT +10:00 | +36000 | |
| Australia/Lord Howe (+1030) | Jul 16 2018 01:30:00 | GMT +10:30 | +37800 | |
| Australia/Melbourne (AEST) | Jul 16 2018 01:00:00 | GMT +10:00 | +36000 | |
| Australia/Perth (AWST) | Jul 15 2018 23:00:00 | GMT +08:00 | +28800 | |
| Australia/Sydney (AEST) | Jul 16 2018 01:00:00 | GMT +10:00 | +36000 | |
| Europe | ||||
| Europe/Amsterdam (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Andorra (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Astrakhan (+04) | Jul 15 2018 19:00:00 | GMT +04:00 | +14400 | |
| Europe/Athens (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Europe/Belgrade (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Berlin (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Bratislava (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Brussels (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Bucharest (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Europe/Budapest (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Busingen (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Chisinau (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Europe/Copenhagen (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Dublin (IST) | Jul 15 2018 16:00:00 | GMT +01:00 | +3600 | |
| Europe/Gibraltar (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Guernsey (BST) | Jul 15 2018 16:00:00 | GMT +01:00 | DST | +3600 |
| Europe/Helsinki (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Europe/Isle of Man (BST) | Jul 15 2018 16:00:00 | GMT +01:00 | DST | +3600 |
| Europe/Istanbul (+03) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Europe/Jersey (BST) | Jul 15 2018 16:00:00 | GMT +01:00 | DST | +3600 |
| Europe/Kaliningrad (EET) | Jul 15 2018 17:00:00 | GMT +02:00 | +7200 | |
| Europe/Kirov (+03) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Europe/Kyiv (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Europe/Lisbon (WEST) | Jul 15 2018 16:00:00 | GMT +01:00 | DST | +3600 |
| Europe/Ljubljana (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/London (BST) | Jul 15 2018 16:00:00 | GMT +01:00 | DST | +3600 |
| Europe/Luxembourg (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Madrid (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Malta (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Mariehamn (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Europe/Minsk (+03) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Europe/Monaco (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Moscow (MSK) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Europe/Oslo (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Paris (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Podgorica (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Prague (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Riga (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Europe/Rome (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Samara (+04) | Jul 15 2018 19:00:00 | GMT +04:00 | +14400 | |
| Europe/San Marino (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Sarajevo (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Saratov (+04) | Jul 15 2018 19:00:00 | GMT +04:00 | +14400 | |
| Europe/Simferopol (MSK) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Europe/Skopje (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Sofia (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Europe/Stockholm (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Tallinn (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Europe/Tirane (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Ulyanovsk (+04) | Jul 15 2018 19:00:00 | GMT +04:00 | +14400 | |
| Europe/Vaduz (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Vatican (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Vienna (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Vilnius (EEST) | Jul 15 2018 18:00:00 | GMT +03:00 | DST | +10800 |
| Europe/Volgograd (+03) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Europe/Warsaw (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Zagreb (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Europe/Zurich (CEST) | Jul 15 2018 17:00:00 | GMT +02:00 | DST | +7200 |
| Indian | ||||
| Indian/Antananarivo (EAT) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Indian/Chagos (+06) | Jul 15 2018 21:00:00 | GMT +06:00 | +21600 | |
| Indian/Christmas (+07) | Jul 15 2018 22:00:00 | GMT +07:00 | +25200 | |
| Indian/Cocos (+0630) | Jul 15 2018 21:30:00 | GMT +06:30 | +23400 | |
| Indian/Comoro (EAT) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Indian/Kerguelen (+05) | Jul 15 2018 20:00:00 | GMT +05:00 | +18000 | |
| Indian/Mahe (+04) | Jul 15 2018 19:00:00 | GMT +04:00 | +14400 | |
| Indian/Maldives (+05) | Jul 15 2018 20:00:00 | GMT +05:00 | +18000 | |
| Indian/Mauritius (+04) | Jul 15 2018 19:00:00 | GMT +04:00 | +14400 | |
| Indian/Mayotte (EAT) | Jul 15 2018 18:00:00 | GMT +03:00 | +10800 | |
| Indian/Reunion (+04) | Jul 15 2018 19:00:00 | GMT +04:00 | +14400 | |
| Pacific | ||||
| Pacific/Apia (+13) | Jul 16 2018 04:00:00 | GMT +13:00 | +46800 | |
| Pacific/Auckland (NZST) | Jul 16 2018 03:00:00 | GMT +12:00 | +43200 | |
| Pacific/Bougainville (+11) | Jul 16 2018 02:00:00 | GMT +11:00 | +39600 | |
| Pacific/Chatham (+1245) | Jul 16 2018 03:45:00 | GMT +12:45 | +45900 | |
| Pacific/Chuuk (+10) | Jul 16 2018 01:00:00 | GMT +10:00 | +36000 | |
| Pacific/Easter (-06) | Jul 15 2018 09:00:00 | GMT -06:00 | -21600 | |
| Pacific/Efate (+11) | Jul 16 2018 02:00:00 | GMT +11:00 | +39600 | |
| Pacific/Fakaofo (+13) | Jul 16 2018 04:00:00 | GMT +13:00 | +46800 | |
| Pacific/Fiji (+12) | Jul 16 2018 03:00:00 | GMT +12:00 | +43200 | |
| Pacific/Funafuti (+12) | Jul 16 2018 03:00:00 | GMT +12:00 | +43200 | |
| Pacific/Galapagos (-06) | Jul 15 2018 09:00:00 | GMT -06:00 | -21600 | |
| Pacific/Gambier (-09) | Jul 15 2018 06:00:00 | GMT -09:00 | -32400 | |
| Pacific/Guadalcanal (+11) | Jul 16 2018 02:00:00 | GMT +11:00 | +39600 | |
| Pacific/Guam (ChST) | Jul 16 2018 01:00:00 | GMT +10:00 | +36000 | |
| Pacific/Honolulu (HST) | Jul 15 2018 05:00:00 | GMT -10:00 | -36000 | |
| Pacific/Kanton (+13) | Jul 16 2018 04:00:00 | GMT +13:00 | +46800 | |
| Pacific/Kiritimati (+14) | Jul 16 2018 05:00:00 | GMT +14:00 | +50400 | |
| Pacific/Kosrae (+11) | Jul 16 2018 02:00:00 | GMT +11:00 | +39600 | |
| Pacific/Kwajalein (+12) | Jul 16 2018 03:00:00 | GMT +12:00 | +43200 | |
| Pacific/Majuro (+12) | Jul 16 2018 03:00:00 | GMT +12:00 | +43200 | |
| Pacific/Marquesas (-0930) | Jul 15 2018 05:30:00 | GMT -09:30 | -34200 | |
| Pacific/Midway (SST) | Jul 15 2018 04:00:00 | GMT -11:00 | -39600 | |
| Pacific/Nauru (+12) | Jul 16 2018 03:00:00 | GMT +12:00 | +43200 | |
| Pacific/Niue (-11) | Jul 15 2018 04:00:00 | GMT -11:00 | -39600 | |
| Pacific/Norfolk (+11) | Jul 16 2018 02:00:00 | GMT +11:00 | +39600 | |
| Pacific/Noumea (+11) | Jul 16 2018 02:00:00 | GMT +11:00 | +39600 | |
| Pacific/Pago Pago (SST) | Jul 15 2018 04:00:00 | GMT -11:00 | -39600 | |
| Pacific/Palau (+09) | Jul 16 2018 00:00:00 | GMT +09:00 | +32400 | |
| Pacific/Pitcairn (-08) | Jul 15 2018 07:00:00 | GMT -08:00 | -28800 | |
| Pacific/Pohnpei (+11) | Jul 16 2018 02:00:00 | GMT +11:00 | +39600 | |
| Pacific/Port Moresby (+10) | Jul 16 2018 01:00:00 | GMT +10:00 | +36000 | |
| Pacific/Rarotonga (-10) | Jul 15 2018 05:00:00 | GMT -10:00 | -36000 | |
| Pacific/Saipan (ChST) | Jul 16 2018 01:00:00 | GMT +10:00 | +36000 | |
| Pacific/Tahiti (-10) | Jul 15 2018 05:00:00 | GMT -10:00 | -36000 | |
| Pacific/Tarawa (+12) | Jul 16 2018 03:00:00 | GMT +12:00 | +43200 | |
| Pacific/Tongatapu (+13) | Jul 16 2018 04:00:00 | GMT +13:00 | +46800 | |
| Pacific/Wake (+12) | Jul 16 2018 03:00:00 | GMT +12:00 | +43200 | |
| Pacific/Wallis (+12) | Jul 16 2018 03:00:00 | GMT +12:00 | +43200 | |
| UTC (GMT) | ||||
| UTC (UTC) | Jul 15 2018 15:00:00 | GMT +00:00 | 0 | |
Be careful: This script cannot handle dates far in the future/past! Current timezones/daylight saving rules are used for all dates.
Daylight Saving Times (DST)
To convert from normal/standard time to daylight saving time add 1 hour ( or +3600 seconds ).
For example: Eastern Standard Time = GMT-5, add 1 hour: Eastern Daylight Time = GMT-4