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 1601451019 (Sep 30 2020 07:30:19 UTC/GMT).
| Region (time zone) | Converted timestamp 1601451019 |
Relative to UTC/ |
Date in DST |
Offset In seconds |
|---|---|---|---|---|
| Africa | ||||
| Africa/Abidjan (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Africa/Accra (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Africa/Addis Ababa (EAT) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Africa/Algiers (CET) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Asmara (EAT) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Africa/Bamako (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Africa/Bangui (WAT) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Banjul (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Africa/Bissau (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Africa/Blantyre (CAT) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Brazzaville (WAT) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Bujumbura (CAT) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Cairo (EET) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Casablanca (+01) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Ceuta (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Africa/Conakry (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Africa/Dakar (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Africa/Dar es Salaam (EAT) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Africa/Djibouti (EAT) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Africa/Douala (WAT) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/El Aaiun (+01) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Freetown (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Africa/Gaborone (CAT) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Harare (CAT) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Johannesburg (SAST) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Juba (EAT) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Africa/Kampala (EAT) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Africa/Khartoum (CAT) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Kigali (CAT) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Kinshasa (WAT) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Lagos (WAT) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Libreville (WAT) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Lome (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Africa/Luanda (WAT) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Lubumbashi (CAT) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Lusaka (CAT) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Malabo (WAT) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Maputo (CAT) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Maseru (SAST) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Mbabane (SAST) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Mogadishu (EAT) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Africa/Monrovia (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Africa/Nairobi (EAT) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Africa/Ndjamena (WAT) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Niamey (WAT) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Nouakchott (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Africa/Ouagadougou (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Africa/Porto-Novo (WAT) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Sao Tome (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Africa/Tripoli (EET) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Africa/Tunis (CET) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Africa/Windhoek (CAT) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| America | ||||
| America/Adak (HDT) | Sep 29 2020 22:30:19 | GMT -09:00 | DST | -32400 |
| America/Anchorage (AKDT) | Sep 29 2020 23:30:19 | GMT -08:00 | DST | -28800 |
| America/Anguilla (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Antigua (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Araguaina (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Argentina/Buenos Aires (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Argentina/Catamarca (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Argentina/Cordoba (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Argentina/Jujuy (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Argentina/La Rioja (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Argentina/Mendoza (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Argentina/Rio Gallegos (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Argentina/Salta (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Argentina/San Juan (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Argentina/San Luis (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Argentina/Tucuman (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Argentina/Ushuaia (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Aruba (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Asuncion (-04) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Atikokan (EST) | Sep 30 2020 02:30:19 | GMT -05:00 | -18000 | |
| America/Bahia (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Bahia Banderas (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/Barbados (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Belem (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Belize (CST) | Sep 30 2020 01:30:19 | GMT -06:00 | -21600 | |
| America/Blanc-Sablon (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Boa Vista (-04) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Bogota (-05) | Sep 30 2020 02:30:19 | GMT -05:00 | -18000 | |
| America/Boise (MDT) | Sep 30 2020 01:30:19 | GMT -06:00 | DST | -21600 |
| America/Cambridge Bay (MDT) | Sep 30 2020 01:30:19 | GMT -06:00 | DST | -21600 |
| America/Campo Grande (-04) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Cancun (EST) | Sep 30 2020 02:30:19 | GMT -05:00 | -18000 | |
| America/Caracas (-04) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Cayenne (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Cayman (EST) | Sep 30 2020 02:30:19 | GMT -05:00 | -18000 | |
| America/Chicago (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/Chihuahua (MDT) | Sep 30 2020 01:30:19 | GMT -06:00 | DST | -21600 |
| America/Costa Rica (CST) | Sep 30 2020 01:30:19 | GMT -06:00 | -21600 | |
| America/Creston (MST) | Sep 30 2020 00:30:19 | GMT -07:00 | -25200 | |
| America/Cuiaba (-04) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Curacao (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Danmarkshavn (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| America/Dawson (PDT) | Sep 30 2020 00:30:19 | GMT -07:00 | DST | -25200 |
| America/Dawson Creek (MST) | Sep 30 2020 00:30:19 | GMT -07:00 | -25200 | |
| America/Denver (MDT) | Sep 30 2020 01:30:19 | GMT -06:00 | DST | -21600 |
| America/Detroit (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Dominica (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Edmonton (MDT) | Sep 30 2020 01:30:19 | GMT -06:00 | DST | -21600 |
| America/Eirunepe (-05) | Sep 30 2020 02:30:19 | GMT -05:00 | -18000 | |
| America/El Salvador (CST) | Sep 30 2020 01:30:19 | GMT -06:00 | -21600 | |
| America/Fort Nelson (MST) | Sep 30 2020 00:30:19 | GMT -07:00 | -25200 | |
| America/Fortaleza (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Glace Bay (ADT) | Sep 30 2020 04:30:19 | GMT -03:00 | DST | -10800 |
| America/Goose Bay (ADT) | Sep 30 2020 04:30:19 | GMT -03:00 | DST | -10800 |
| America/Grand Turk (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Grenada (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Guadeloupe (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Guatemala (CST) | Sep 30 2020 01:30:19 | GMT -06:00 | -21600 | |
| America/Guayaquil (-05) | Sep 30 2020 02:30:19 | GMT -05:00 | -18000 | |
| America/Guyana (-04) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Halifax (ADT) | Sep 30 2020 04:30:19 | GMT -03:00 | DST | -10800 |
| America/Havana (CDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Hermosillo (MST) | Sep 30 2020 00:30:19 | GMT -07:00 | -25200 | |
| America/Indiana/Indianapolis (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Indiana/Knox (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/Indiana/Marengo (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Indiana/Petersburg (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Indiana/Tell City (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/Indiana/Vevay (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Indiana/Vincennes (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Indiana/Winamac (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Inuvik (MDT) | Sep 30 2020 01:30:19 | GMT -06:00 | DST | -21600 |
| America/Iqaluit (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Jamaica (EST) | Sep 30 2020 02:30:19 | GMT -05:00 | -18000 | |
| America/Juneau (AKDT) | Sep 29 2020 23:30:19 | GMT -08:00 | DST | -28800 |
| America/Kentucky/Louisville (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Kentucky/Monticello (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Kralendijk (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/La Paz (-04) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Lima (-05) | Sep 30 2020 02:30:19 | GMT -05:00 | -18000 | |
| America/Los Angeles (PDT) | Sep 30 2020 00:30:19 | GMT -07:00 | DST | -25200 |
| America/Lower Princes (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Maceio (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Managua (CST) | Sep 30 2020 01:30:19 | GMT -06:00 | -21600 | |
| America/Manaus (-04) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Marigot (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Martinique (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Matamoros (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/Mazatlan (MDT) | Sep 30 2020 01:30:19 | GMT -06:00 | DST | -21600 |
| America/Menominee (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/Merida (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/Metlakatla (AKDT) | Sep 29 2020 23:30:19 | GMT -08:00 | DST | -28800 |
| America/Mexico City (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/Miquelon (-02) | Sep 30 2020 05:30:19 | GMT -02:00 | DST | -7200 |
| America/Moncton (ADT) | Sep 30 2020 04:30:19 | GMT -03:00 | DST | -10800 |
| America/Monterrey (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/Montevideo (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Montserrat (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Nassau (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/New York (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Nome (AKDT) | Sep 29 2020 23:30:19 | GMT -08:00 | DST | -28800 |
| America/Noronha (-02) | Sep 30 2020 05:30:19 | GMT -02:00 | -7200 | |
| America/North Dakota/Beulah (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/North Dakota/Center (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/North Dakota/New Salem (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/Nuuk (-02) | Sep 30 2020 05:30:19 | GMT -02:00 | DST | -7200 |
| America/Ojinaga (MDT) | Sep 30 2020 01:30:19 | GMT -06:00 | DST | -21600 |
| America/Panama (EST) | Sep 30 2020 02:30:19 | GMT -05:00 | -18000 | |
| America/Pangnirtung (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Paramaribo (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Phoenix (MST) | Sep 30 2020 00:30:19 | GMT -07:00 | -25200 | |
| America/Port-au-Prince (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Port of Spain (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Porto Velho (-04) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Puerto Rico (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Punta Arenas (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Rankin Inlet (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/Recife (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Regina (CST) | Sep 30 2020 01:30:19 | GMT -06:00 | -21600 | |
| America/Resolute (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/Rio Branco (-05) | Sep 30 2020 02:30:19 | GMT -05:00 | -18000 | |
| America/Santarem (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Santiago (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | DST | -10800 |
| America/Santo Domingo (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Sao Paulo (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| America/Scoresbysund (+00) | Sep 30 2020 07:30:19 | GMT +00:00 | DST | 0 |
| America/Sitka (AKDT) | Sep 29 2020 23:30:19 | GMT -08:00 | DST | -28800 |
| America/St Barthelemy (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/St Johns (NDT) | Sep 30 2020 05:00:19 | GMT -02:30 | DST | -9000 |
| America/St Kitts (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/St Lucia (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/St Thomas (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/St Vincent (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Swift Current (CST) | Sep 30 2020 01:30:19 | GMT -06:00 | -21600 | |
| America/Tegucigalpa (CST) | Sep 30 2020 01:30:19 | GMT -06:00 | -21600 | |
| America/Thule (ADT) | Sep 30 2020 04:30:19 | GMT -03:00 | DST | -10800 |
| America/Tijuana (PDT) | Sep 30 2020 00:30:19 | GMT -07:00 | DST | -25200 |
| America/Toronto (EDT) | Sep 30 2020 03:30:19 | GMT -04:00 | DST | -14400 |
| America/Tortola (AST) | Sep 30 2020 03:30:19 | GMT -04:00 | -14400 | |
| America/Vancouver (PDT) | Sep 30 2020 00:30:19 | GMT -07:00 | DST | -25200 |
| America/Whitehorse (PDT) | Sep 30 2020 00:30:19 | GMT -07:00 | DST | -25200 |
| America/Winnipeg (CDT) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| America/Yakutat (AKDT) | Sep 29 2020 23:30:19 | GMT -08:00 | DST | -28800 |
| America/Yellowknife (MDT) | Sep 30 2020 01:30:19 | GMT -06:00 | DST | -21600 |
| Antarctica | ||||
| Antarctica/Casey (+08) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Antarctica/Davis (+07) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Antarctica/DumontDUrville (+10) | Sep 30 2020 17:30:19 | GMT +10:00 | +36000 | |
| Antarctica/Macquarie (AEST) | Sep 30 2020 17:30:19 | GMT +10:00 | +36000 | |
| Antarctica/Mawson (+05) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Antarctica/McMurdo (NZDT) | Sep 30 2020 20:30:19 | GMT +13:00 | DST | +46800 |
| Antarctica/Palmer (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| Antarctica/Rothera (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| Antarctica/Syowa (+03) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Antarctica/Troll (+02) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Antarctica/Vostok (+06) | Sep 30 2020 13:30:19 | GMT +06:00 | +21600 | |
| Arctic | ||||
| Arctic/Longyearbyen (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Asia | ||||
| Asia/Aden (+03) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Asia/Almaty (+06) | Sep 30 2020 13:30:19 | GMT +06:00 | +21600 | |
| Asia/Amman (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Asia/Anadyr (+12) | Sep 30 2020 19:30:19 | GMT +12:00 | +43200 | |
| Asia/Aqtau (+05) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Asia/Aqtobe (+05) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Asia/Ashgabat (+05) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Asia/Atyrau (+05) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Asia/Baghdad (+03) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Asia/Bahrain (+03) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Asia/Baku (+04) | Sep 30 2020 11:30:19 | GMT +04:00 | +14400 | |
| Asia/Bangkok (+07) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Asia/Barnaul (+07) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Asia/Beirut (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Asia/Bishkek (+06) | Sep 30 2020 13:30:19 | GMT +06:00 | +21600 | |
| Asia/Brunei (+08) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Asia/Chita (+09) | Sep 30 2020 16:30:19 | GMT +09:00 | +32400 | |
| Asia/Choibalsan (+08) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Asia/Colombo (+0530) | Sep 30 2020 13:00:19 | GMT +05:30 | +19800 | |
| Asia/Damascus (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Asia/Dhaka (+06) | Sep 30 2020 13:30:19 | GMT +06:00 | +21600 | |
| Asia/Dili (+09) | Sep 30 2020 16:30:19 | GMT +09:00 | +32400 | |
| Asia/Dubai (+04) | Sep 30 2020 11:30:19 | GMT +04:00 | +14400 | |
| Asia/Dushanbe (+05) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Asia/Famagusta (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Asia/Gaza (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Asia/Hebron (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Asia/Ho Chi Minh (+07) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Asia/Hong Kong (HKT) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Asia/Hovd (+07) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Asia/Irkutsk (+08) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Asia/Jakarta (WIB) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Asia/Jayapura (WIT) | Sep 30 2020 16:30:19 | GMT +09:00 | +32400 | |
| Asia/Jerusalem (IDT) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Asia/Kabul (+0430) | Sep 30 2020 12:00:19 | GMT +04:30 | +16200 | |
| Asia/Kamchatka (+12) | Sep 30 2020 19:30:19 | GMT +12:00 | +43200 | |
| Asia/Karachi (PKT) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Asia/Kathmandu (+0545) | Sep 30 2020 13:15:19 | GMT +05:45 | +20700 | |
| Asia/Khandyga (+09) | Sep 30 2020 16:30:19 | GMT +09:00 | +32400 | |
| Asia/Kolkata (IST) | Sep 30 2020 13:00:19 | GMT +05:30 | +19800 | |
| Asia/Krasnoyarsk (+07) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Asia/Kuala Lumpur (+08) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Asia/Kuching (+08) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Asia/Kuwait (+03) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Asia/Macau (CST) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Asia/Magadan (+11) | Sep 30 2020 18:30:19 | GMT +11:00 | +39600 | |
| Asia/Makassar (WITA) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Asia/Manila (PST) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Asia/Muscat (+04) | Sep 30 2020 11:30:19 | GMT +04:00 | +14400 | |
| Asia/Nicosia (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Asia/Novokuznetsk (+07) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Asia/Novosibirsk (+07) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Asia/Omsk (+06) | Sep 30 2020 13:30:19 | GMT +06:00 | +21600 | |
| Asia/Oral (+05) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Asia/Phnom Penh (+07) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Asia/Pontianak (WIB) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Asia/Pyongyang (KST) | Sep 30 2020 16:30:19 | GMT +09:00 | +32400 | |
| Asia/Qatar (+03) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Asia/Qostanay (+06) | Sep 30 2020 13:30:19 | GMT +06:00 | +21600 | |
| Asia/Qyzylorda (+05) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Asia/Riyadh (+03) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Asia/Sakhalin (+11) | Sep 30 2020 18:30:19 | GMT +11:00 | +39600 | |
| Asia/Samarkand (+05) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Asia/Seoul (KST) | Sep 30 2020 16:30:19 | GMT +09:00 | +32400 | |
| Asia/Shanghai (CST) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Asia/Singapore (+08) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Asia/Srednekolymsk (+11) | Sep 30 2020 18:30:19 | GMT +11:00 | +39600 | |
| Asia/Taipei (CST) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Asia/Tashkent (+05) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Asia/Tbilisi (+04) | Sep 30 2020 11:30:19 | GMT +04:00 | +14400 | |
| Asia/Tehran (+0330) | Sep 30 2020 11:00:19 | GMT +03:30 | +12600 | |
| Asia/Thimphu (+06) | Sep 30 2020 13:30:19 | GMT +06:00 | +21600 | |
| Asia/Tokyo (JST) | Sep 30 2020 16:30:19 | GMT +09:00 | +32400 | |
| Asia/Tomsk (+07) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Asia/Ulaanbaatar (+08) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Asia/Urumqi (+06) | Sep 30 2020 13:30:19 | GMT +06:00 | +21600 | |
| Asia/Ust-Nera (+10) | Sep 30 2020 17:30:19 | GMT +10:00 | +36000 | |
| Asia/Vientiane (+07) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Asia/Vladivostok (+10) | Sep 30 2020 17:30:19 | GMT +10:00 | +36000 | |
| Asia/Yakutsk (+09) | Sep 30 2020 16:30:19 | GMT +09:00 | +32400 | |
| Asia/Yangon (+0630) | Sep 30 2020 14:00:19 | GMT +06:30 | +23400 | |
| Asia/Yekaterinburg (+05) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Asia/Yerevan (+04) | Sep 30 2020 11:30:19 | GMT +04:00 | +14400 | |
| Atlantic | ||||
| Atlantic/Azores (+00) | Sep 30 2020 07:30:19 | GMT +00:00 | DST | 0 |
| Atlantic/Bermuda (ADT) | Sep 30 2020 04:30:19 | GMT -03:00 | DST | -10800 |
| Atlantic/Canary (WEST) | Sep 30 2020 08:30:19 | GMT +01:00 | DST | +3600 |
| Atlantic/Cape Verde (-01) | Sep 30 2020 06:30:19 | GMT -01:00 | -3600 | |
| Atlantic/Faroe (WEST) | Sep 30 2020 08:30:19 | GMT +01:00 | DST | +3600 |
| Atlantic/Madeira (WEST) | Sep 30 2020 08:30:19 | GMT +01:00 | DST | +3600 |
| Atlantic/Reykjavik (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Atlantic/South Georgia (-02) | Sep 30 2020 05:30:19 | GMT -02:00 | -7200 | |
| Atlantic/St Helena (GMT) | Sep 30 2020 07:30:19 | GMT +00:00 | 0 | |
| Atlantic/Stanley (-03) | Sep 30 2020 04:30:19 | GMT -03:00 | -10800 | |
| Australia | ||||
| Australia/Adelaide (ACST) | Sep 30 2020 17:00:19 | GMT +09:30 | +34200 | |
| Australia/Brisbane (AEST) | Sep 30 2020 17:30:19 | GMT +10:00 | +36000 | |
| Australia/Broken Hill (ACST) | Sep 30 2020 17:00:19 | GMT +09:30 | +34200 | |
| Australia/Darwin (ACST) | Sep 30 2020 17:00:19 | GMT +09:30 | +34200 | |
| Australia/Eucla (+0845) | Sep 30 2020 16:15:19 | GMT +08:45 | +31500 | |
| Australia/Hobart (AEST) | Sep 30 2020 17:30:19 | GMT +10:00 | +36000 | |
| Australia/Lindeman (AEST) | Sep 30 2020 17:30:19 | GMT +10:00 | +36000 | |
| Australia/Lord Howe (+1030) | Sep 30 2020 18:00:19 | GMT +10:30 | +37800 | |
| Australia/Melbourne (AEST) | Sep 30 2020 17:30:19 | GMT +10:00 | +36000 | |
| Australia/Perth (AWST) | Sep 30 2020 15:30:19 | GMT +08:00 | +28800 | |
| Australia/Sydney (AEST) | Sep 30 2020 17:30:19 | GMT +10:00 | +36000 | |
| Europe | ||||
| Europe/Amsterdam (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Andorra (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Astrakhan (+04) | Sep 30 2020 11:30:19 | GMT +04:00 | +14400 | |
| Europe/Athens (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Europe/Belgrade (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Berlin (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Bratislava (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Brussels (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Bucharest (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Europe/Budapest (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Busingen (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Chisinau (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Europe/Copenhagen (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Dublin (IST) | Sep 30 2020 08:30:19 | GMT +01:00 | +3600 | |
| Europe/Gibraltar (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Guernsey (BST) | Sep 30 2020 08:30:19 | GMT +01:00 | DST | +3600 |
| Europe/Helsinki (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Europe/Isle of Man (BST) | Sep 30 2020 08:30:19 | GMT +01:00 | DST | +3600 |
| Europe/Istanbul (+03) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Europe/Jersey (BST) | Sep 30 2020 08:30:19 | GMT +01:00 | DST | +3600 |
| Europe/Kaliningrad (EET) | Sep 30 2020 09:30:19 | GMT +02:00 | +7200 | |
| Europe/Kirov (+03) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Europe/Kyiv (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Europe/Lisbon (WEST) | Sep 30 2020 08:30:19 | GMT +01:00 | DST | +3600 |
| Europe/Ljubljana (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/London (BST) | Sep 30 2020 08:30:19 | GMT +01:00 | DST | +3600 |
| Europe/Luxembourg (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Madrid (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Malta (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Mariehamn (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Europe/Minsk (+03) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Europe/Monaco (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Moscow (MSK) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Europe/Oslo (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Paris (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Podgorica (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Prague (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Riga (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Europe/Rome (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Samara (+04) | Sep 30 2020 11:30:19 | GMT +04:00 | +14400 | |
| Europe/San Marino (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Sarajevo (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Saratov (+04) | Sep 30 2020 11:30:19 | GMT +04:00 | +14400 | |
| Europe/Simferopol (MSK) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Europe/Skopje (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Sofia (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Europe/Stockholm (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Tallinn (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Europe/Tirane (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Ulyanovsk (+04) | Sep 30 2020 11:30:19 | GMT +04:00 | +14400 | |
| Europe/Vaduz (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Vatican (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Vienna (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Vilnius (EEST) | Sep 30 2020 10:30:19 | GMT +03:00 | DST | +10800 |
| Europe/Volgograd (+04) | Sep 30 2020 11:30:19 | GMT +04:00 | +14400 | |
| Europe/Warsaw (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Zagreb (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Europe/Zurich (CEST) | Sep 30 2020 09:30:19 | GMT +02:00 | DST | +7200 |
| Indian | ||||
| Indian/Antananarivo (EAT) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Indian/Chagos (+06) | Sep 30 2020 13:30:19 | GMT +06:00 | +21600 | |
| Indian/Christmas (+07) | Sep 30 2020 14:30:19 | GMT +07:00 | +25200 | |
| Indian/Cocos (+0630) | Sep 30 2020 14:00:19 | GMT +06:30 | +23400 | |
| Indian/Comoro (EAT) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Indian/Kerguelen (+05) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Indian/Mahe (+04) | Sep 30 2020 11:30:19 | GMT +04:00 | +14400 | |
| Indian/Maldives (+05) | Sep 30 2020 12:30:19 | GMT +05:00 | +18000 | |
| Indian/Mauritius (+04) | Sep 30 2020 11:30:19 | GMT +04:00 | +14400 | |
| Indian/Mayotte (EAT) | Sep 30 2020 10:30:19 | GMT +03:00 | +10800 | |
| Indian/Reunion (+04) | Sep 30 2020 11:30:19 | GMT +04:00 | +14400 | |
| Pacific | ||||
| Pacific/Apia (+14) | Sep 30 2020 21:30:19 | GMT +14:00 | DST | +50400 |
| Pacific/Auckland (NZDT) | Sep 30 2020 20:30:19 | GMT +13:00 | DST | +46800 |
| Pacific/Bougainville (+11) | Sep 30 2020 18:30:19 | GMT +11:00 | +39600 | |
| Pacific/Chatham (+1345) | Sep 30 2020 21:15:19 | GMT +13:45 | DST | +49500 |
| Pacific/Chuuk (+10) | Sep 30 2020 17:30:19 | GMT +10:00 | +36000 | |
| Pacific/Easter (-05) | Sep 30 2020 02:30:19 | GMT -05:00 | DST | -18000 |
| Pacific/Efate (+11) | Sep 30 2020 18:30:19 | GMT +11:00 | +39600 | |
| Pacific/Fakaofo (+13) | Sep 30 2020 20:30:19 | GMT +13:00 | +46800 | |
| Pacific/Fiji (+12) | Sep 30 2020 19:30:19 | GMT +12:00 | +43200 | |
| Pacific/Funafuti (+12) | Sep 30 2020 19:30:19 | GMT +12:00 | +43200 | |
| Pacific/Galapagos (-06) | Sep 30 2020 01:30:19 | GMT -06:00 | -21600 | |
| Pacific/Gambier (-09) | Sep 29 2020 22:30:19 | GMT -09:00 | -32400 | |
| Pacific/Guadalcanal (+11) | Sep 30 2020 18:30:19 | GMT +11:00 | +39600 | |
| Pacific/Guam (ChST) | Sep 30 2020 17:30:19 | GMT +10:00 | +36000 | |
| Pacific/Honolulu (HST) | Sep 29 2020 21:30:19 | GMT -10:00 | -36000 | |
| Pacific/Kanton (+13) | Sep 30 2020 20:30:19 | GMT +13:00 | +46800 | |
| Pacific/Kiritimati (+14) | Sep 30 2020 21:30:19 | GMT +14:00 | +50400 | |
| Pacific/Kosrae (+11) | Sep 30 2020 18:30:19 | GMT +11:00 | +39600 | |
| Pacific/Kwajalein (+12) | Sep 30 2020 19:30:19 | GMT +12:00 | +43200 | |
| Pacific/Majuro (+12) | Sep 30 2020 19:30:19 | GMT +12:00 | +43200 | |
| Pacific/Marquesas (-0930) | Sep 29 2020 22:00:19 | GMT -09:30 | -34200 | |
| Pacific/Midway (SST) | Sep 29 2020 20:30:19 | GMT -11:00 | -39600 | |
| Pacific/Nauru (+12) | Sep 30 2020 19:30:19 | GMT +12:00 | +43200 | |
| Pacific/Niue (-11) | Sep 29 2020 20:30:19 | GMT -11:00 | -39600 | |
| Pacific/Norfolk (+11) | Sep 30 2020 18:30:19 | GMT +11:00 | +39600 | |
| Pacific/Noumea (+11) | Sep 30 2020 18:30:19 | GMT +11:00 | +39600 | |
| Pacific/Pago Pago (SST) | Sep 29 2020 20:30:19 | GMT -11:00 | -39600 | |
| Pacific/Palau (+09) | Sep 30 2020 16:30:19 | GMT +09:00 | +32400 | |
| Pacific/Pitcairn (-08) | Sep 29 2020 23:30:19 | GMT -08:00 | -28800 | |
| Pacific/Pohnpei (+11) | Sep 30 2020 18:30:19 | GMT +11:00 | +39600 | |
| Pacific/Port Moresby (+10) | Sep 30 2020 17:30:19 | GMT +10:00 | +36000 | |
| Pacific/Rarotonga (-10) | Sep 29 2020 21:30:19 | GMT -10:00 | -36000 | |
| Pacific/Saipan (ChST) | Sep 30 2020 17:30:19 | GMT +10:00 | +36000 | |
| Pacific/Tahiti (-10) | Sep 29 2020 21:30:19 | GMT -10:00 | -36000 | |
| Pacific/Tarawa (+12) | Sep 30 2020 19:30:19 | GMT +12:00 | +43200 | |
| Pacific/Tongatapu (+13) | Sep 30 2020 20:30:19 | GMT +13:00 | +46800 | |
| Pacific/Wake (+12) | Sep 30 2020 19:30:19 | GMT +12:00 | +43200 | |
| Pacific/Wallis (+12) | Sep 30 2020 19:30:19 | GMT +12:00 | +43200 | |
| UTC (GMT) | ||||
| UTC (UTC) | Sep 30 2020 07:30:19 | 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