Every UTC offset in use as standard time
The 312 zones use 37 different standard times, from UTC+14 to UTC−11: a span of 25 hours, more than a full day, because zones on both sides of the date line are counted.
UTC+14
1 zone
UTC+13
4 zones
UTC+12:45
1 zone, 1 with seasonal changes
UTC+12
7 zones, 1 with seasonal changes
Anadyr, Auckland, Fiji, Kamchatka, Marshall Islands, Nauru, Tarawa
UTC+11
9 zones, 1 with seasonal changes
Bougainville, Vanuatu, Solomon Islands, Micronesia, Magadan, Norfolk Island, New Caledonia, Sakhalin, Srednekolymsk
UTC+10:30
1 zone, 1 with seasonal changes
UTC+10
10 zones, 4 with seasonal changes
Brisbane, Guam, Hobart, Lindeman, Macquarie Island, Melbourne, Port Moresby, Sydney, Ust-Nera, Vladivostok
UTC+9:30
3 zones, 2 with seasonal changes
UTC+9
9 zones
Chita, East Timor, Jayapura, Khandyga, Palau, North Korea, South Korea, Japan, Yakutsk
UTC+8:45
1 zone
UTC+8
12 zones
Casey Station, Hong Kong, Irkutsk, Malaysia, Macau, Makassar, Philippines, Perth, Shanghai, Singapore, Taiwan, Ulaanbaatar
UTC+7
11 zones
Thailand, Barnaul, Davis Station, Vietnam, Hovd, Jakarta, Krasnoyarsk, Novokuznetsk, Novosibirsk, Pontianak, Tomsk
UTC+6:30
1 zone
UTC+6
6 zones
Kyrgyzstan, British Indian Ocean Territory, Bangladesh, Omsk, Bhutan, Ürümqi
UTC+5:45
1 zone
UTC+5:30
2 zones
UTC+5
16 zones
Almaty, Aqtau, Aqtobe, Turkmenistan, Atyrau, Tajikistan, Pakistan, Maldives, Mawson Station, Oral, Qostanay, Qyzylorda, Samarkand, Tashkent, Vostok Station, Yekaterinburg
UTC+4:30
1 zone
UTC+4
9 zones
Astrakhan, Azerbaijan, United Arab Emirates, Mauritius, Samara, Saratov, Georgia, Ulyanovsk, Armenia
UTC+3:30
1 zone
UTC+3
12 zones
Jordan, Iraq, Syria, Turkey, Kirov, Belarus, Moscow, Kenya, Qatar, Saudi Arabia, Simferopol, Volgograd
UTC+2
23 zones, 16 with seasonal changes
Greece, Lebanon, Romania, Egypt, Moldova, Famagusta, Gaza, Hebron, Finland, Israel, South Africa, South Sudan, Kaliningrad, Sudan, Kyiv, Mozambique, Nicosia, Latvia, Bulgaria, Estonia, Libya, Lithuania, Namibia
UTC+1
21 zones, 17 with seasonal changes
Algeria, Andorra, Serbia, Germany, Belgium, Hungary, Ceuta, Ireland, Gibraltar, Nigeria, Madrid, Malta, Chad, France, Czech Republic, Italy, Albania, Tunisia, Austria, Poland, Switzerland
UTC+0
13 zones, 6 with seasonal changes
Côte d’Ivoire, Guinea-Bissau, Canary Islands, Morocco, Danmarkshavn, Western Sahara, Faroe Islands, Lisbon, United Kingdom, Madeira, Liberia, São Tomé and Príncipe, Troll Station
UTC−1
2 zones, 1 with seasonal changes
UTC−2
4 zones, 2 with seasonal changes
Fernando de Noronha, Ittoqqortoormiit, Nuuk, South Georgia and the South Sandwich Islands
UTC−3
30 zones, 1 with seasonal changes
Araguaína, Paraguay, Bahia, Belém, Buenos Aires, Catamarca, French Guiana, Cordoba, Coyhaique, Fortaleza, Jujuy, La Rioja, Maceió, Mendoza, Saint Pierre and Miquelon, Uruguay, Palmer Station, Suriname, Punta Arenas, Recife, Rio Gallegos, Rothera Station, Salta, San Juan, San Luis, Santarém, Falkland Islands, São Paulo, Tucumán, Ushuaia
UTC−3:30
1 zone, 1 with seasonal changes
UTC−4
19 zones, 7 with seasonal changes
Barbados, Bermuda, Boa Vista, Campo Grande, Venezuela, Cuiabá, Glace Bay, Goose Bay, Guyana, Halifax, Bolivia, Manaus, Martinique, Moncton, Pituffik (Thule), Porto Velho, Puerto Rico, Santiago, Dominican Republic
UTC−5
24 zones, 15 with seasonal changes
Colombia, Cancún, Detroit, Eirunepé, Turks and Caicos Islands, Guayaquil, Cuba, Indianapolis, Indiana, Iqaluit, Jamaica, Peru, Louisville, Kentucky, Marengo, Indiana, Monticello, Kentucky, New York, Panama, Petersburg, Indiana, Haiti, Rio Branco, Toronto, Vevay, Indiana, Vincennes, Indiana, Winamac, Indiana, Winnipeg
UTC−6
28 zones, 12 with seasonal changes
Bahía de Banderas, Belize, Beulah, North Dakota, Center, North Dakota, Chicago, Chihuahua, Costa Rica, Easter Island, Edmonton, El Salvador, Galápagos Islands, Guatemala, Inuvik, Knox, Indiana, Nicaragua, Matamoros, Menominee, Mexico City, Monterrey, Mérida, New Salem, North Dakota, Ojinaga, Rankin Inlet, Regina, Resolute, Swift Current, Honduras, Tell City, Indiana
UTC−7
12 zones, 4 with seasonal changes
Boise, Cambridge Bay, Ciudad Juárez, Dawson, Dawson Creek, Denver, Fort Nelson, Hermosillo, Mazatlan, Phoenix, Vancouver, Whitehorse
UTC−8
3 zones, 2 with seasonal changes
UTC−9
7 zones, 6 with seasonal changes
Anchorage, Gambier Islands, Juneau, Metlakatla, Nome, Sitka, Yakutat
UTC−9:30
1 zone
UTC−10
4 zones, 1 with seasonal changes
UTC−11
2 zones