The number of different time zones used around the world is 38 from March to September and 39 from September to March.

UTC + 14 hours:

Kiribati
Samoa -- Sep-Apr only

UTC + 13.75 hours:

New Zealand -- Sep-Apr only

UTC + 13 hours:

Antarctica -- Sep-Apr only
Fiji -- Nov-Jan only
Kiribati
New Zealand
Samoa -- Apr-Sep only
Tonga

UTC + 12.75 hours:

New Zealand -- Apr-Sep only

UTC + 12 hours:

Antarctica -- Apr-Sep only
Fiji -- Jan-Nov only
France
Kiribati
Marshall Islands
Nauru
New Zealand -- Apr-Sep only
Russia
Tuvalu

UTC + 11.5 hours:

Australia

UTC + 11 hours:

Australia
France
Micronesia
Papua New Guinea
Russia
Solomon Islands
Vanuatu

UTC + 10.5 hours:

Australia

UTC + 10 hours:

Antarctica
Australia
Micronesia
Papua New Guinea
Russia
United States

UTC + 9.5 hours:

Australia

UTC + 9 hours:

Indonesia
Japan
Mongolia -- Mar-Sep only
North Korea
Palau
Russia
South Korea
Timor-Leste

UTC + 8.75 hours:

Australia

UTC + 8 hours:

Antarctica
Australia
Brunei Darussalam
China
Indonesia
Malaysia
Mongolia
Philippines
Russia
Singapore
Taiwan

UTC + 7 hours:

Antarctica
Australia
Cambodia
Indonesia
Laos
Mongolia -- Sep-Mar only
Russia
Thailand
Vietnam

UTC + 6.5 hours:

Australia
Myanmar

UTC + 6 hours:

Antarctica
Bangladesh
Bhutan
Kazakhstan
Kyrgyzstan
Russia
United Kingdom

UTC + 5.75 hours:

Nepal

UTC + 5.5 hours:

India
Sri Lanka

UTC + 5 hours:

Antarctica
Azerbaijan -- Mar-Oct only
France
Kazakhstan
Maldives
Pakistan
Russia
Tajikistan
Turkmenistan
Uzbekistan

UTC + 4.5 hours:

Afghanistan
Iran -- Mar-Sep only

UTC + 4 hours:

Armenia
Azerbaijan -- Oct-Mar only
France
Georgia
Mauritius
Oman
Russia
Seychelles
United Arab Emirates

UTC + 3.5 hours:

Iran -- Sep-Mar only

UTC + 3 hours:

Antarctica
Bahrain
Belarus
Bulgaria -- Mar-Oct only
Comoros
Cyprus -- Mar-Oct only
Djibouti
Eritrea
Estonia -- Mar-Oct only
Ethiopia
Finland -- Mar-Oct only
France
Greece -- Mar-Oct only
Iraq
Israel -- Mar-Oct only
Jordan -- Mar-Oct only
Kenya
Kuwait
Latvia -- Mar-Oct only
Lebanon -- Mar-Oct only
Lithuania -- Mar-Oct only
Madagascar
Moldova -- Mar-Oct only
Palestine -- Mar-Oct only
Qatar
Romania -- Mar-Oct only
Russia
Saudi Arabia
Somalia
South Sudan
Sudan
Syria -- Mar-Oct only
Tanzania
Turkey -- Mar-Oct only
Uganda
Ukraine
United Kingdom -- Mar-Oct only
Yemen

UTC + 2 hours:

Albania -- Mar-Oct only
Andorra -- Mar-Oct only
Antarctica -- Mar-Oct only
Austria -- Mar-Oct only
Belgium -- Mar-Oct only
Bosnia & Herzegovina -- Mar-Oct only
Botswana
Bulgaria -- Oct-Mar only
Burundi
D.R.Congo
Croatia -- Mar-Oct only
Cyprus -- Oct-Mar only
Czech Republic -- Mar-Oct only
Denmark -- Mar-Oct only
Egypt
Estonia -- Oct-Mar only
Finland -- Oct-Mar only
France -- Mar-Oct only
Germany -- Mar-Oct only
Greece -- Oct-Mar only
Hungary -- Mar-Oct only
Israel -- Oct-Mar only
Italy -- Mar-Oct only
Jordan -- Oct-Mar only
Kosovo -- Mar-Oct only
Latvia -- Oct-Mar only
Lebanon -- Oct-Mar only
Lesotho
Libya
Liechtenstein -- Mar-Oct only
Lithuania -- Oct-Mar only
Luxembourg -- Mar-Oct only
Macedonia -- Mar-Oct only
Malawi
Malta -- Mar-Oct only
Moldova -- Oct-Mar only
Monaco -- Mar-Oct only
Montenegro -- Mar-Oct only
Mozambique
Namibia -- Sep-Apr only
Netherlands -- Mar-Oct only
Norway -- Mar-Oct only
Palestine -- Oct-Mar only
Poland -- Mar-Oct only
Romania -- Oct-Mar only
Russia
Rwanda
San Marino -- Mar-Oct only
Serbia -- Mar-Oct only
Slovakia -- Mar-Oct only
Slovenia -- Mar-Oct only
South Africa
Spain -- Mar-Oct only
Swaziland
Sweden -- Mar-Oct only
Switzerland -- Mar-Oct only
Syria -- Oct-Mar only
Turkey -- Oct-Mar only
Ukraine -- Oct-Mar only
United Kingdom
Vatican City -- Mar-Oct only
Zambia
Zimbabwe

UTC + 1 hour:

Albania -- Oct-Mar only
Algeria
Andorra -- Oct-Mar only
Angola
Antarctica -- Mar & Oct-Nov only
Austria -- Oct-Mar only
Belgium -- Oct-Mar only
Benin
Bosnia & Herzegovina -- Oct-Mar only
Cameroon
Central African Republic
Chad
Congo
D.R.Congo
Croatia -- Oct-Mar only
Czech Republic -- Oct-Mar only
Denmark
Equatorial Guinea
France -- Oct-Mar only
Gabon
Germany -- Oct-Mar only
Hungary -- Oct-Mar only
Ireland -- Mar-Oct only
Italy -- Oct-Mar only
Kosovo -- Oct-Mar only
Liechtenstein -- Oct-Mar only
Luxembourg -- Oct-Mar only
Macedonia -- Oct-Mar only
Malta -- Oct-Mar only
Monaco -- Oct-Mar only
Montenegro -- Oct-Mar only
Morocco -- Mar-Oct except Ramadan
Namibia -- Apr-Sep only
Netherlands -- Oct-Mar only
Niger
Nigeria
Norway -- Oct-Mar only
Poland -- Oct-Mar only
Portugal -- Mar-Oct only
San Marino -- Oct-Mar only
Serbia -- Oct-Mar only
Slovakia -- Oct-Mar only
Slovenia -- Oct-Mar only
Spain
Sweden -- Oct-Mar only
Switzerland -- Oct-Mar only
Tunisia
United Kingdom
Vatican City -- Oct-Mar only
Western Sahara -- Mar-Oct except Ramadan

UTC + 0:

Antarctica -- Nov-Feb only
Burkina Faso
CÃ´te d'Ivoire
Denmark
Gambia
Ghana
Guinea
Guinea-Bissau
Iceland
Ireland -- Oct-Mar only
Liberia
Mali
Mauritania
Morocco -- Oct-Mar & Ramadan
Portugal
SÃ£o TomÃ© and PrÃncipe
Senegal
Sierra Leone
Spain -- Oct-Mar only
Togo
United Kingdom
Western Sahara -- Oct-Mar & Ramadan

UTC - 1 hour:

Cabo Verde
Denmark -- Oct-Mar only
Portugal -- Oct-Mar only

UTC - 2 hours:

Brazil
Denmark -- Mar-Oct only
France -- Mar-Nov only
United Kingdom
Uruguay -- Oct-Mar only

UTC - 2.5 hours:

Canada -- Mar-Nov only

UTC - 3 hours:

Antarctica
Argentina
Brazil
Canada -- Mar-Nov only
Chile
Denmark
France
Paraguay -- Oct-Mar only
Suriname
United Kingdom
Uruguay -- Mar-Oct only

UTC - 3.5 hours:

Canada -- Nov-Mar only

UTC - 4 hours:

Antigua & Barbuda
Bahamas -- Mar-Nov only
Barbados
Bolivia
Brazil
Canada
Cuba -- Mar-Nov only
Denmark -- Nov-Mar only
Dominica
Dominican Republic
France
Grenada
Guyana
Haiti -- Mar-Nov only
Netherlands
Paraguay -- Mar-Oct only
Saint Kitts & Nevis
Saint Lucia
Saint Vincent & the Grenadines
Trinidad & Tobago
United Kingdom
United States

UTC - 4.5 hours:

Venezuela

UTC - 5 hours:

Bahamas -- Nov-Mar only
Brazil
Canada
Chile
Colombia
Cuba -- Nov-Mar only
Ecuador
Haiti -- Nov-Mar only
Jamaica
Mexico
Panama
Peru
United Kingdom
United States

UTV - 6 hours:

Belize
Canada
Costa Rica
Ecuador
Guatemala
Honduras
Mexico
Nicaragua
El Salvador
United States

UTC - 7 hours:

Canada
Mexico
United States

UTC - 8 hours:

Canada -- Nov-Mar only
Mexico -- Nov-Mar only
United Kingdom
United States

UTC - 9 hours:

France
United States

UTC - 9.5 hours:

France

UTC - 10 hours:

France
New Zealand
United States

UTC - 11 hours:

New Zealand
United States

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