Which Countries Have the Most Time Zones, and Why

France has the most time zones of any country, with 12 (13 if its claim in Antarctica is counted), followed by Russia and the United States with 11 each, according to the official offsets each government sets for its territory as compiled in 2026. Australia and the United Kingdom have 9, Canada and New Zealand 5, and Brazil, Denmark and Mexico 4 each. The list rewards two very different things: continental width, which gives Russia its 11 zones in one unbroken landmass, and scattered overseas territories, which give France, Britain and the United States clocks on almost every ocean.

The ten countries with four or more time zones

The counts below include each country's dependent territories but leave out Antarctic claims, and they count standard offsets only, ignoring the extra hour of daylight saving time that some regions add in summer. A country with a 30- or 45-minute offset gets credit for it as a separate zone, which is why Australia scores higher than its three mainland zones would suggest.

Leftover empires: France's 12 zones and Britain's 9

Metropolitan France fits inside a single zone, Central European Time (UTC+1). Its clocks were first unified in 1891 on the solar time of the Paris Observatory, switched to Greenwich Mean Time in 1911 and have been an hour ahead of Greenwich since 1940. Every other French zone comes from territory kept after the colonial era. In the Pacific, French Polynesia alone uses three offsets: UTC−10 for Tahiti and the Society Islands, UTC−9:30 for the Marquesas and UTC−9 for the Gambier Islands. Clipperton Island, an uninhabited atoll off Mexico, sits at UTC−8.

The Caribbean islands of Guadeloupe, Martinique, Saint Barthélemy and Saint Martin use UTC−4; French Guiana and Saint Pierre and Miquelon use UTC−3. In the Indian Ocean, Mayotte keeps UTC+3, Réunion and the Crozet Islands UTC+4, and the Kerguelen Islands UTC+5. Then come New Caledonia at UTC+11 and Wallis and Futuna at UTC+12. Adding Adélie Land in Antarctica would make 13. Only a few of these places change their clocks in summer: metropolitan France follows the European schedule, switching to UTC+2 from the last Sunday in March to the last Sunday in October, while Saint Pierre and Miquelon, off the coast of Newfoundland, follows the North American dates instead. The rest of Overseas France keeps the same time all year, which is one reason the count uses standard offsets only.

The United Kingdom follows the same pattern on a smaller scale. Its nine zones run from UTC−8 on the Pitcairn Islands through the Cayman Islands (UTC−5), Bermuda and the British Virgin Islands (UTC−4), the Falkland Islands (UTC−3) and South Georgia (UTC−2), to Greenwich Mean Time at home, Gibraltar at UTC+1, the Akrotiri and Dhekelia bases on Cyprus at UTC+2 and the British Indian Ocean Territory at UTC+6.

Width alone: Russia's eleven zones from Kaliningrad to Kamchatka

Russia is the only country in the top five whose zones fall almost entirely on one continuous landmass, apart from offshore islands and the Kaliningrad exclave on the Baltic. Its clocks run from UTC+2 in Kaliningrad through Moscow Time (UTC+3), which about 63 percent of Russians use, to UTC+12 in Chukotka and Kamchatka Krai. When it is 9 a.m. in Moscow it is 4 p.m. in Vladivostok, which keeps UTC+10.

The number has not been fixed. On 28 March 2010 Russia abolished two of its eleven zones: Samara Oblast and Udmurtia moved onto Moscow Time, and Kamchatka and Chukotka joined Magadan Time. The change was unpopular in the far east, where a petition with about 20,000 signatures asked for Kamchatka's old time back. A new law in July 2014 restored both zones when it took effect on 26 October 2014, the same day Russia ended three and a half years of permanent summer time and moved Moscow back to UTC+3. Regions have kept adjusting since: in 2016 about ten regions, including Astrakhan, Ulyanovsk, Saratov, Tomsk, Novosibirsk and Magadan, moved their clocks forward by an hour.

Pacific islands and odd offsets: the United States, Australia and New Zealand

The United States officially counts nine standard zones for its states and inhabited territories, from Samoa Time (UTC−11) in American Samoa to Chamorro Time (UTC+10) in Guam and the Northern Mariana Islands. The contiguous states use four, Eastern, Central, Mountain and Pacific, which the railroads introduced at noon on 18 November 1883 when telegraph lines sent time signals to the major cities. Alaska, Hawaii, Puerto Rico and the U.S. Virgin Islands add three more. Two uninhabited Pacific possessions bring the total to eleven: Baker and Howland Islands sit at UTC−12, the last place on Earth to finish any given day, and Wake Island sits at UTC+12. The zone boundaries and daylight saving rules are regulated by the Department of Transportation, and under the Uniform Time Act of 1966 each state chooses whether to observe daylight saving time across its whole territory. That is why Hawaii and most of Arizona stay on standard time all year while their neighbours change clocks twice annually.

Australia's nine zones mix external territories with unusual fractions. Heard and McDonald Islands keep UTC+5, the Cocos (Keeling) Islands UTC+6:30 and Christmas Island UTC+7. On the mainland, Western Australia uses UTC+8, South Australia and the Northern Territory UTC+9:30, and the eastern states UTC+10. Lord Howe Island keeps UTC+10:30 and Norfolk Island UTC+11.

The oddest Australian zone is Central Western Time, UTC+8:45, used by the roadhouses and settlements along the Eyre Highway east of Caiguna, including Cocklebiddy, Madura, Mundrabilla and Eucla, plus Border Village just across the South Australian line. About 200 people live in the area. The zone has no legal status, but it splits the difference between Perth and Adelaide for travellers crossing the Nullarbor Plain. New Zealand reaches five zones through its Pacific realm: Niue (UTC−11) and the Cook Islands (UTC−10) on one side of the date line, and the main islands (UTC+12), the Chatham Islands (UTC+12:45) and Tokelau (UTC+13) on the other. The Chatham Islands sit about 800 kilometres east of the South Island, and their 45-minute offset is one of only a handful of quarter-hour zones in use anywhere.

Laws, not longitude: Kiribati, China and Canada's shrinking count

Governments decide time zones, and several decisions show how loosely they follow geography. Kiribati straddles both the equator and the 180th meridian. When it became independent in 1979 its Phoenix and Line Islands used UTC−11 and UTC−10, nearly a full day behind the Gilbert Islands and the capital. In 1994 the government moved them to UTC+13 and UTC+14, pushing the International Date Line far to the east and giving the Line Islands the most advanced clock on Earth.

China does the opposite. Although its territory spans five geographical time zones, the whole country has kept a single Beijing Time, UTC+8, making it the largest country in the world with only one official zone. Xinjiang switched repeatedly between its own UTC+6 and Beijing Time between 1969 and 1986; the story is told in our article on why China uses one time zone. India, similarly, uses a single offset of UTC+5:30, one of the half-hour zones explained in our guide to half-hour and quarter-hour time zones.

Canada has recently dropped a zone. Its divisions trace back to the proposals of the railway engineer Sandford Fleming, and until 2026 it ran six, from Pacific to Newfoundland. Yukon stopped changing its clocks in 2020, and British Columbia followed on 8 March 2026, staying on UTC−7 year-round. That left Pacific Standard Time (UTC−8) unused anywhere in Canada, so the country now has five zones: UTC−7, Central, Eastern, Atlantic and Newfoundland, whose UTC−3:30 remains one of the few half-hour offsets in the Americas. The map is still moving: Alberta and the Northwest Territories adopted permanent UTC−6 in April 2026, and in September 2026 Manitoba announced a move to year-round UTC−5.

Four zones each: Brazil, Denmark and Mexico

The last three countries in the top ten reach four zones for different reasons. Brazil's come from width and islands: UTC−5 in Acre and south-western Amazonas, UTC−4 in most of Amazonas, Mato Grosso, Mato Grosso do Sul, Rondônia and Roraima, Brasília Time (UTC−3) for the populous south-east and north-east, and UTC−2 for offshore islands such as Fernando de Noronha. Denmark's come almost entirely from Greenland, which uses UTC−2 on its inhabited west coast, UTC−4 at the Pituffik Space Base and UTC+0 on part of its north-east coast, the offset shared with the Faroe Islands, while Denmark itself keeps UTC+1.

Mexico adopted standard time in 1922 under President Álvaro Obregón with just two zones. Today it has four: UTC−8 in Baja California, UTC−7 in Sonora, Sinaloa, Baja California Sur and most of Nayarit, UTC−6 for Mexico City and most of the country, and UTC−5 in Quintana Roo, home to Cancún. To see how all these national choices add up across the planet, read our explainer on how many time zones there are in the world.