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Countries by Number of Time Zones

Countries by Number of Time Zones

Education & ScienceJuly 2, 2026

The accompanying infographic presents 13 countries and the number of time zones associated with each. Contrary to the common perception of France as a small European nation, it ranks first in the number of time zones. The United States and Russia share second place, while Australia and the United Kingdom both hold the ninth position. These rankings are influenced by factors beyond mere geography, introducing additional complexity to the data.

Modern time zones emerged in the nineteenth century to address logistical challenges related to train scheduling. Before this development, towns and villages relied on solar time, defining noon by the sun’s zenith. In North America, more than 144 local time zones existed. The expansion of railroads necessitated standardized scheduling across cities, but independent local clocks at each station complicated coordination. Sandford Fleming, a Scottish-Canadian engineer, proposed a global system of 24 time zones, each spanning 15 degrees of longitude, to resolve these issues.

However, the initially straightforward concept of time zones soon became complicated by factors including politics, colonial history, geography, and national identity. Some countries are geographically wide enough to require multiple time zones. Others, as a result of their colonial past, govern islands distant from their mainland and thus require separate time zones for those territories. Certain nations adjust their clocks to accommodate specific needs, even when these decisions do not align with geographic realities. Consequently, the infographic represents more than a numerical list; it reflects the enduring influence of empires, patterns of exploration, and the human inclination to impose order on the world.

Rank 1 — France: 12 Time Zones

No country covers more time zones than France, which surprises most people when they first learn it. The mainland, often called the hexagon in Western Europe, uses just one time zone: Central European Time (UTC+1). But France is more than just its mainland. It includes Guadeloupe in the Caribbean, Réunion in the Indian Ocean, French Polynesia in the South Pacific, and several other territories spread across nearly every major ocean. When you add them all together, France has 12 official time zones, or 13 if you include its claim in Antarctica.

The full list of France’s time zone offsets reads like a miniature world atlas. The westernmost point, the Society Islands of French Polynesia, including Tahiti, is UTC−10, putting it roughly in the same time zone as Hawaii. On the other end of the spectrum, Wallis and Futuna, two small island groups deep in the South Pacific, operate at UTC+12 — making them nearly a full day ahead of Tahiti, even though both fly the French flag. Between those extremes, you find Guadeloupe and Martinique in the Caribbean at UTC−4, French Guiana on the South American mainland at UTC−3, the tiny North Atlantic islands of Saint-Pierre and Miquelon at UTC−3, metropolitan France itself at UTC+1, Mayotte in the Indian Ocean at UTC+3, Réunion at UTC+4, and New Caledonia in the Pacific at UTC+11. The Marquesas Islands, another part of French Polynesia, add a half-hour anomaly at UTC−9:30 — one of the rare places on Earth where a clock runs at a 30-minute offset.

A notable aspect of France’s timekeeping is that the mainland does not share a time zone with any of its territories. For instance, at noon in Paris, it is 2 AM in Tahiti, 3 PM in Mayotte, and 10 PM in Wallis and Futuna. Metropolitan France observes daylight saving time, advancing to UTC+2 in summer, whereas most overseas territories maintain the same time year-round. As a result, the time difference between Paris and its territories varies with the seasons. Saint-Pierre and Miquelon is the sole exception, adhering to daylight saving time rules similar to those in the United States and Canada rather than those in France. This arrangement is not merely a bureaucratic anomaly; it reflects centuries of French colonial history, with each territory maintaining its own relationship to solar time.

8 Key Facts about France’s Time Zones:

France holds the Guinness World Records title for the most time zones of any country, with 12 (13 including Antarctica).
Metropolitan France uses Central European Time (UTC+1), but no overseas territory shares that exact zone.
French Polynesia’s Tahiti runs on UTC−10, putting it in the same time zone as the U.S. state of Hawaii.
Wallis and Futuna at UTC+12 are 22 hours ahead of Tahiti, despite both being French-governed territories.
The Marquesas Islands observe a unique UTC−9:30 offset — one of the rare fractional time zones on Earth.
Saint-Pierre and Miquelon, located just 25 km off the coast of Canada’s Newfoundland, follow North American daylight saving rules.
Réunion Island in the Indian Ocean operates at UTC+4, the same as Mauritius and the Seychelles.
France adopted daylight saving time in 1976 primarily to reduce energy consumption after the 1973 oil crisis.

Rank 2 — Russia: 11 Time Zones

Russia is the largest country in the world by land area, stretching about 9,000 kilometers from Kaliningrad in the west to the Chukotka Peninsula in the far east. The numbers reflect this: Russia has 11 time zones, from UTC+2 in Kaliningrad to UTC+12 in Kamchatka and Chukotka. For example, at noon in Moscow, it is already 9 PM in Kamchatka, where fishing fleets are ending their day. Russia spans more than half the world’s longitudinal width, so having many time zones is not just practical; it is necessary.

Russia’s formal time zone history began in earnest during the construction of the Trans-Siberian Railway in the late 19th century, when coordinating trains across thousands of kilometers of wilderness made the chaos of solar time impossible. In 1899, Russia introduced its first standardized time zone system based on Greenwich Mean Time. The Soviet era introduced daylight saving time as a wartime measure, which was later abolished and reinstated multiple times. In 2010, then-President Dmitry Medvedev eliminated daylight saving entirely and consolidated from 11 time zones to 9 — partly in a bid to reduce disruptions to productivity — but the move proved deeply unpopular. By 2014, President Vladimir Putin restored the 11-zone system, though without reinstating daylight saving time, meaning Russia’s clocks no longer shift with the seasons.

The 11 current zones read like a roll call of Russian geography: Kaliningrad Time at UTC+2, Moscow Time at UTC+3, Samara Time at UTC+4, Yekaterinburg Time at UTC+5, Omsk Time at UTC+6, Krasnoyarsk Time at UTC+7, Irkutsk Time at UTC+8, Yakutsk Time at UTC+9, Vladivostok Time at UTC+10, Magadan Time at UTC+11, and Kamchatka Time at UTC+12. Each name evokes a different landscape: the forests of Siberia, the permafrost of Yakutia, the volcanic peaks of Kamchatka. Kaliningrad, Russia’s isolated Baltic outpost squeezed between Poland and Lithuania, sits at UTC+2 — actually behind Moscow’s UTC+3, a geographic oddity created by the territory’s location deep in Eastern Europe. The Kamchatka Time Zone, at UTC+12, covers the two easternmost regions of Russia after a 2014 reform, and it no longer observes daylight saving time, so the zone stays fixed at UTC+12 year-round.

8 Key Facts about Russia’s Time Zones:

Russia’s 11 time zones span from UTC+2 in Kaliningrad to UTC+12 in Kamchatka — a 10-hour spread across a single country.
The Trans-Siberian Railway, spanning 9,289 kilometers, was the primary driver of Russia’s first standardized time system in 1899.
Russia abolished daylight saving time in 2014, meaning all 11 zones now observe fixed, permanent standard time year-round.
Kamchatka Time (PETT), UTC+12, is used by Kamchatka Krai and Chukotka Autonomous Okrug — Russia’s easternmost regions.
Kaliningrad, despite being Russian territory, operates at UTC+2 — one hour behind Moscow due to its location in Western Europe.
Moscow Time (UTC+3) is effectively the country’s reference time, used for most national broadcasting, rail schedules, and official communications.
Between 2010 and 2014, Russia attempted to reduce the number of time zones to 9, but public dissatisfaction led to a full restoration of the 11-zone system.
Russia covers more than 17 million square kilometers, making its multi-zone timekeeping a logistical necessity rather than a political choice.

Rank 2 — United States: 11 Time Zones

The United States, like Russia, has 11 time zones. Much of this comes from territories far beyond the 48 mainland states. The six main zones—Eastern (UTC−5), Central (UTC−6), Mountain (UTC−7), Pacific (UTC−8), Alaska (UTC−9), and Hawaii-Aleutian (UTC−10)—are well known to most Americans. But the U.S. also has territories in the Pacific and Caribbean, such as Guam, the Northern Mariana Islands, American Samoa, and Wake Island, each with its own time zone.

The U.S. Minor Outlying Islands are where the count really adds up. Baker Island and Howland Island, two uninhabited specks of land in the central Pacific, observe UTC−12 — the most negative time offset on Earth. Wake Island, sitting deep in the North Pacific, runs at UTC+12. American Samoa observes UTC−11. Guam and the Northern Mariana Islands use Chamorro Standard Time, which is UTC+10. Interestingly, Wake Island is maintained by the U.S. military, and its UTC+12 position means that, alongside Kiribati’s Phoenix Islands, it is among the last places on Earth to see the old year out and the new one in. The United States, through the combination of its continental width and its far-flung island possessions, manages to hold a footprint on both ends of the global clock.

The story of American time zones is especially interesting because of the country’s internal politics. For example, Arizona does not observe daylight saving time, except for the Navajo Nation, which does. Indiana had different counties following different time zones for years, until a 2006 change put the whole state on Eastern Time with daylight saving time. The Aleutian Islands, a chain of volcanic islands stretching from Alaska toward Russia, use Hawaii-Aleutian Time (UTC−10) because they are west of the 169th meridian. This makes them closer to Asia geographically, but they remain in North America’s time zone. Puerto Rico and the U.S. Virgin Islands use Atlantic Standard Time (UTC−4) year-round and do not observe daylight saving time.

8 Key Facts about the United States’ Time Zones:

The United States spans 11 time zones from UTC−12 at the Baker and Howland Islands to UTC+12 at Wake Island.
The six standard domestic time zones — Eastern, Central, Mountain, Pacific, Alaska, and Hawaii-Aleutian — cover all 50 states.
Baker Island and Howland Island at UTC−12 are among the last places on Earth to start a new calendar day.
Arizona does not observe daylight saving time, creating temporary time zone complexity for neighboring states in spring and fall.
Chamorro Standard Time (UTC+10) in Guam and the Northern Mariana Islands puts those U.S. territories 15 hours ahead of the East Coast during standard time.
American Samoa observes UTC−11, meaning it begins each calendar day after most of the rest of the world.
Wake Island at UTC+12 is nearly exactly opposite the U.S. mainland on the global clock.
The U.S. started observing daylight saving time during World War I to conserve energy and has adjusted its rules several times, most recently extending it by about four weeks in 2007.

Rank 4 — Antarctica: 10 Time Zones

Antarctica is probably the most unusual entry on this list because it does not actually have any official time zones. The continent is at the bottom of the Earth, where all lines of longitude meet at the South Pole, so in theory, Antarctica could be in all 24 time zones at once. There are no permanent civilian residents and no national government, since the Antarctic Treaty of 1959 reserves the land for peaceful scientific work. Still, Antarctica appears in rankings with 10 time zones because each research station uses the time zone that best suits its needs.

The principle is straightforward: each research station uses the time zone of its home country or its main supply base. McMurdo Station and Amundsen-Scott South Pole Station, both operated by the United States, use New Zealand Standard Time (UTC+12) because their primary resupply flights come from Christchurch, New Zealand. Palmer Station, the U.S. base on the Antarctic Peninsula, follows Chilean time (UTC−3) because Chile is its nearest logistical neighbor. Australia’s Casey Station uses Australian time; France’s Dumont d’Urville Station tracks Paris time. Russia’s Vostok Station, buried deep in the continent’s interior, one of the coldest places on Earth, uses UTC+5.

The result is a patchwork of clocks unlike anywhere else on the planet — stations sometimes just a few hundred kilometers apart operating on completely different times. Norway’s Troll station adds a particularly exotic touch: it uses UTC+0 in winter and actually shifts to Central European Summer Time (UTC+2) in summer, jumping two full hours rather than the standard one. At the South Pole itself, where every meridian intersects, the question of “what time is it?” is almost philosophical. The sun does not rise and set daily — in summer it circles the horizon continuously, and in winter it disappears for months. Antarctica does not just challenge our time zones; it challenges the very concept of time as humans have constructed it.

8 Key Facts about Antarctica’s Time Zones:

Antarctica has no official time zones because all longitude lines converge at the South Pole.
The continent hosts around 4,800 people during summer and approximately 1,200 during winter across dozens of research stations.
McMurdo Station follows New Zealand time (UTC+12) because Christchurch, New Zealand, is its primary resupply hub.
Palmer Station follows Chilean time (UTC−3) to align with its closest supply base and logistics partner.
Russia’s Vostok Station, one of the coldest inhabited places on Earth, runs on UTC+5 — which is Moscow time plus 2 hours.
Norway’s Troll station uniquely shifts two hours forward in summer (to UTC+2), rather than the standard one-hour daylight saving time adjustment.
France’s Dumont d’Urville Station on the Antarctic coast uses UTC+10, aligning with France’s Pacific territories rather than metropolitan France.
During polar summer, Antarctica experiences 24 hours of continuous daylight, making conventional time-of-day concepts largely meaningless at the higher latitudes.

Rank 5 — Australia: 9 Time Zones

Australia’s time zones are both interesting and confusing, as anyone who has tried to arrange a call across the country can confirm. Officially, Australia has five mainland time zones: Eastern Daylight Time (UTC+10), Central Daylight Time (UTC+9:30), Western Daylight Time (UTC+8), and their standard versions. But when you include Lord Howe Island’s unusual half-hour offset and Macquarie Island’s year-round UTC+11, the total reaches nine. Australia is one of the few countries with several 30-minute time zones instead of just full-hour increments, which makes scheduling even more complicated. Lord Howe Island observes UTC+10:30 during standard time; when daylight saving time begins, it moves its clocks forward by only 30 minutes to UTC+11. Almost every other place that observes daylight saving time moves by a full hour, but Lord Howe moves by half. This goes back to 1899, when local officials chose a compromise between Sydney, at UTC+10, and Norfolk Island, at UTC+11. That unique choice has remained, making Lord Howe Island one of the most distinctive places in the world for timekeeping.

The Northern Territory and South Australia both use half-hour offsets for their standard time as well — the Northern Territory at UTC+9:30 year-round (no daylight saving), and South Australia shifting from UTC+9:30 to UTC+10:30 in summer. Western Australia, covering roughly a third of the continent’s landmass, stubbornly stays at UTC+8 with no daylight saving, having rejected it in a 2009 public referendum after a three-year trial found it unpopular. Queensland, meanwhile, opts out of daylight saving entirely, keeping UTC+10 year-round — a decision that creates a temporary one-hour mismatch with New South Wales on the other side of the border every time the eastern states change their clocks. Australia’s nine time zones are, in many ways, a perfect reflection of the country’s celebrated spirit of regional independence.

8 Key Facts about Australia’s Time Zones:

Australia spans nine time zones, including three with half-hour offsets, a rarity globally.
Lord Howe Island at UTC+10:30 observes a unique 30-minute daylight saving shift instead of the standard 60-minute change.
Western Australia rejected daylight saving time in a public referendum in 2009, after a three-year trial period.
Queensland does not observe daylight saving time, creating a one-hour gap with New South Wales each spring and autumn.
Macquarie Island, an Australian territory in the subantarctic, runs at UTC+11 year-round with no seasonal adjustment.
The Lord Howe Island UTC+10:30 offset originated in 1899 as a compromise between Sydney and Norfolk Island times.
South Australia’s UTC+9:30 standard time and UTC+10:30 daylight saving time mean residents physically cross a half-hour time boundary when entering neighboring Victoria.
Australia’s time zone complexity is a product of federation politics: individual states retained the right to set their own daylight saving rules at federation in 1901.

Rank 6 — United Kingdom: 9 Time Zones

Like France, the United Kingdom’s high number of time zones comes mostly from its overseas territories, not from the British Isles themselves. The UK mainland, including Northern Ireland, Scotland, Wales, and the Crown Dependencies (Jersey, Guernsey, and the Isle of Man), uses just one time zone: Greenwich Mean Time (UTC+0) in winter and British Summer Time (UTC+1) in summer. However, the former British Empire left behind several Overseas Territories still under the Crown, such as the Falkland Islands in the South Atlantic, the British Indian Ocean Territory, Bermuda near North America, and Pitcairn Island in the South Pacific.

The full spectrum runs from the Falkland Islands at UTC−3 to the British Indian Ocean Territory (Diego Garcia) at UTC+6 and then all the way to the Pitcairn Islands at UTC−8. Bermuda, the British Virgin Islands, the Cayman Islands, and Turks and Caicos operate at UTC -4, UTC -4, UTC −5, and UTC -5, respectively. South Georgia and the South Sandwich Islands in the South Atlantic use UTC−2. Saint Helena, the remote island where Napoleon was exiled, keeps UTC+0 year-round. The British Antarctic Territory adds further range, with research stations following the times appropriate to their location and supply chains — typically UTC−3 for the Antarctic Peninsula.

A statistician looking at this list would notice that the UK’s time zone count is really a map of its post-imperial geography. These territories were kept mainly for strategic reasons, such as naval routes, military bases, fishing rights, or simply to have a British presence on every ocean. The total population of all UK Overseas Territories is much smaller than that of mainland Britain, but they give the UK a time zone reach similar to the United States. This shows that geography and history, not population, are what really shape the numbers in the infographic.

8 Key Facts about the UK’s Time Zones:

The UK spans nine time zones entirely through its Overseas Territories, not through the geographic spread of the British Isles.
The British mainland uses Greenwich Mean Time (UTC+0) in winter — the very zone from which all other time zones are measured.
Pitcairn Island, a UK territory with fewer than 50 residents, uses UTC−8, making it one of the most isolated inhabited places on Earth by both distance and time.
Bermuda operates on UTC−4 (Atlantic Standard Time) and observes daylight saving time, shifting to UTC−3 in summer.
The British Indian Ocean Territory (Diego Garcia) at UTC+6 hosts a joint UK-U.S. military base and observes no daylight saving time.
South Georgia, where the 1982 Falklands War began, uses UTC−2 year-round.
The UK’s nine time zones place it equal to Australia — both have nine — making them the joint fourth-largest time zone countries globally.
The phrase “the sun never sets on the British Empire” had literal, chronometric truth — the UK still holds territories in zones spanning nearly the full 24-hour clock.

Rank 7 — Canada: 5 Time Zones

Canada is the second-largest country in the world by area, stretching from the Pacific coast in British Columbia, across the prairies, through Ontario and Quebec, and out to the Atlantic provinces. Yet, it uses only five official time zones: Pacific (UTC−8), Mountain (UTC−7), Central (UTC−6), Eastern (UTC−5), and Atlantic (UTC−4). These zones cover a country almost as wide as Russia. However, the number five does not tell the whole story, because within the Atlantic time zone is a unique feature: Newfoundland Standard Time.

Newfoundland Standard Time runs at UTC−3:30 — a full half-hour offset that makes it the only active half-hour time zone in the entire Western Hemisphere. The story of how this came to be is thoroughly Canadian: it begins with the fact that Newfoundland was not part of Canada at all when time zones were standardized. It was an independent Dominion — with its own government, stamps, and clocks. In 1935, the Newfoundland Commission of Government passed the Standard Time Act, setting clocks exactly 3.5 hours behind Greenwich Mean Time because that was almost precisely the solar time at St. John’s, the capital and largest city. When Newfoundland joined Canada in 1949, it brought its peculiar clock right along with it.

Attempts to harmonize Newfoundland with the Atlantic Time Zone (UTC−4) have consistently failed — not for lack of logical argument, but because Newfoundlanders simply do not want to change. A 1963 proposal was withdrawn amid stiff public opposition. The half-hour time zone has become, as cultural historians note, a symbol of Newfoundland’s distinct identity — as proudly Newfoundland as the province’s unique dialect, its distinctive musical traditions, and its codfishery heritage. The famous CBC broadcast phrase — “half an hour later in Newfoundland” — is recognizable to virtually every Canadian and has become a piece of national folklore. Even the CBC sometimes schedules the province on a completely different program grid from the rest of Atlantic Canada, because a show airing at 9 PM in Nova Scotia airs at 9:30 PM in Newfoundland.

8 Key Facts about Canada’s Time Zones:

Canada operates across five primary time zones, stretching from Pacific Time (UTC−8) in British Columbia to Atlantic Time (UTC−4) in the Maritime provinces.
Newfoundland Standard Time at UTC−3:30 is the only half-hour offset in the Americas.
The Newfoundland time zone was established in 1935 by the Standard Time Act when Newfoundland was still an independent Dominion.
Newfoundland joined Canada in 1949 and brought its existing time zone with it through Confederation negotiations.
In 1963, a provincial government proposal to shift Newfoundland to Atlantic Time was abandoned due to overwhelming public opposition.
Labrador, the mainland portion of Newfoundland and Labrador province, officially follows Newfoundland Time, but some communities near Quebec use Atlantic Time in practice.
In 1988, Newfoundland briefly experimented with “double daylight saving” — advancing clocks two hours in summer — but abandoned the idea after one season due to very dark autumn mornings.
The CBC phrase “half an hour later in Newfoundland” has been broadcast on Canadian national television and radio for decades, becoming a piece of national cultural identity.

Rank 7 — New Zealand: 5 Time Zones

New Zealand is a long, narrow island country in the southwestern Pacific. Most people think of it as having just one time zone: New Zealand Standard Time (UTC+12), which becomes UTC+13 during daylight saving. This is the time used in cities like Auckland, Wellington, Christchurch, and Queenstown. However, New Zealand actually has five time zones when you include all its territories, and the most unusual is the one used by the Chatham Islands.

The Chatham Islands are about 800 kilometers east of the New Zealand mainland, and they are on UTC+12:45 during standard time and UTC+13:45 during daylight saving. A 45-minute offset. Not 30 minutes. Not a full hour. Forty-five minutes — and this is entirely intentional. The Chathams are located far enough east that standard New Zealand time would misalign significantly with the solar day there, but the population — small, closely tied to the mainland for government and commerce — did not want to be a full hour different. So 45 minutes it became, making Chatham Standard Time one of the only quarter-hour offsets on Earth that applies to an inhabited population.

Beyond the Chathams and the mainland, New Zealand’s time zone count grows when you add Tokelau, Niue, and the Cook Islands — all New Zealand-associated territories in the Pacific. The Cook Islands are on UTC−10, meaning they are actually on the other side of the International Date Line from mainland New Zealand. When New Zealand is celebrating a Sunday morning, the Cook Islands are still on Saturday night. Tokelau moved from UTC−11 to UTC+13 in 2011 — a political decision mirroring Samoa’s shift that year — to align its calendar with New Zealand and Fiji. New Zealand’s five time zones are a reminder that, even for a relatively small country, having Pacific territory quickly adds clock complexity.

8 Key Facts about New Zealand’s Time Zones:

New Zealand spans five time zones across its mainland and Pacific territories.
The Chatham Islands use a UTC+12:45 standard time offset — one of the very few quarter-hour offsets anywhere in the world.
During daylight saving, the Chatham Islands advance to UTC+13:45, making them briefly among the world’s most advanced time zones.
The Chatham offset of 45 minutes exists because the islands needed their own zone but chose not to deviate a full hour from the mainland.
The Cook Islands, in free association with New Zealand, use UTC−10 — placing them on the opposite side of the International Date Line from Auckland.
Tokelau changed from UTC−11 to UTC+13 in 2011, jumping forward 24 hours by aligning with the western side of the Date Line.
New Zealand Standard Time was one of the first national standard times ever adopted — as early as 1868, the country moved to a single national clock.
The idea of daylight saving time itself was first proposed by New Zealand entomologist George Vernon Hudson in 1895, who wanted more evening daylight for insect collecting.

Rank 9 — Brazil: 4 Time Zones

Brazil is the largest country in South America and the fifth-largest in the world by area, so it makes sense that it spans four time zones. What is more interesting is how Brazil has managed these four zones in recent years, which shows how timekeeping can be political. Brazil’s time zones range from UTC−2 at the remote islands of Fernando de Noronha to UTC−3 for most of the eastern and central regions, including São Paulo, Rio de Janeiro, and Brasília; then UTC−4 in the Amazon basin and western states; and finally UTC−5 in the far west, such as Acre and parts of Amazonas.

For decades, Brazil observed daylight saving time across roughly the southern half of the country — the states south of the tropics, where seasonal variation in daylight hours is more pronounced.

The states that participated included São Paulo, Rio de Janeiro, Minas Gerais, and about a dozen others, while the equatorial states of the Amazon region did not bother because their days and nights barely change throughout the year. Then, in April 2019, President Jair Bolsonaro signed a decree abolishing daylight saving time entirely. His stated reasoning was that energy savings had become negligible in the modern era, and that forcing Brazilians to commute to work in the dark was a net harm to the population. A government study by the Ministry of Mines and Energy had concluded that the savings were too small to be economically meaningful.

The abolition was controversial. Research published in scientific journals suggests that daylight saving time in Brazil’s southeastern energy grid — the most heavily populated and industrialized part of the country — had been producing measurable reductions in evening electricity consumption, on the order of thousands of megawatt-hours per day. The energy sector, tourist associations, and many businesses lobbied for its return, especially as a historic drought in 2023 strained the country’s hydroelectric-dependent power grid. As of the time of writing, Brazil’s four time zones operate without any seasonal adjustment — a simpler system for daily life, but one that remains contested in policy circles whenever energy consumption spikes.

8 Key Facts about Brazil’s Time Zones:

Brazil spans four time zones from UTC−2 at Fernando de Noronha to UTC−5 at the western edge of Acre and Amazonas states.
UTC−3, which covers Brasília, São Paulo, and Rio de Janeiro, is by far the most populous of Brazil’s four time zones.
Brazil abolished daylight saving time in 2019 by presidential decree under President Jair Bolsonaro.
Prior to 2019, only southern Brazilian states — those outside the equatorial belt — observed daylight saving time.
Studies found Brazil’s daylight saving practice reduced evening electricity demand by roughly 4,976 MWh per day in the Southeast/Midwest subsystem.
The state of Acre (UTC−5) uses the same time as Peru and Colombia despite being physically within Brazil’s borders.
Fernando de Noronha, at UTC−2, is an archipelago of volcanic islands 354 km off the coast of Brazil, designated a UNESCO World Heritage Site.
Brazil’s hydroelectric energy dependence — over 60% of electricity generation — makes the daylight saving debate directly tied to national energy security.

Rank 9 — Denmark: 4 Time Zones

Denmark is a small, well-organized country on the Jutland Peninsula and a few islands, and it uses just one time zone: Central European Time (UTC+1). But Denmark is more than just its mainland. It is part of the Kingdom of Denmark, which includes Greenland and the Faroe Islands. These territories give Denmark a much wider time zone range. The Danish Realm covers four time zones, from UTC−4 at Pituffik Space Base in northwestern Greenland to UTC+1 in Denmark itself.

Greenland alone accounts for three of Denmark’s four zones. The capital Nuuk and most of western Greenland use Western Greenland Time at UTC−2 (shifting to UTC−1 in summer). The remote settlement of Ittoqqortoormiit on Greenland’s east coast uses UTC−2 year-round and UTC−1 during daylight saving time. The northeastern reaches of Greenland, including the Danmarkshavn weather station and Station Nord, use UTC+0 year-round — the same as Greenwich — due to their remote location and scientific logistics. Pituffik Space Base (formerly Thule Air Base), a joint Danish-American military installation in the far northwestern region, uses UTC−4 and follows the U.S. daylight saving time schedule.

There is a compelling recent chapter in Denmark’s time zone story. In November 2022, the Greenlandic Parliament voted to adopt a government proposal shifting most of Greenland one hour forward — from UTC−3 to UTC−2 in standard time — to align the territory more closely with Europe’s business day. The move was driven by economics: Greenland wanted one additional hour of overlap with European trading partners, since the Greenlandic economy is increasingly oriented toward Europe for exports and services. The Greenlandic government acknowledged that the original time zone assignments for the territory had never been formalized by law — they had simply been set administratively by the Danish government. The 2022 vote was, in a sense, the first time Greenland ever formally owned its own time.

8 Key Facts about Denmark’s Time Zones:

Denmark proper uses Central European Time (UTC+1) with daylight saving, but the full Danish Realm spans four time zones.
Greenland alone accounts for three distinct time zones within the Danish Realm.
Pituffik Space Base in northwestern Greenland uses UTC−4 and follows U.S. daylight saving rules due to its military partnership with the United States.
Danmarkshavn, a weather station in northeastern Greenland, uses UTC+0 (Greenwich Mean Time) year-round — the same as the UK.
In November 2022, the Greenlandic Parliament voted to shift most of Greenland’s time zone forward by 1 hour to gain greater overlap with European business hours.
The Faroe Islands, a self-governing territory within the Danish Realm, use Western European Time (UTC+0) with DST — the same time as the United Kingdom.
Before 2022, Greenland’s capital Nuuk used UTC−3, placing it three hours behind Denmark and four hours behind Central Europe.
Greenland is the world’s largest island, and its time zone complexity reflects the enormous east-west extent of the landmass — roughly 2,670 kilometers from west to east.

Rank 11 — Mexico: 3 Time Zones

Mexico stretches from the subtropical south to the high desert north, and its geography means it needs several time zones. However, because Mexico’s economy is closely linked to the United States, there has always been pressure to align with American time, even if it does not align with local solar time. For most of the late 20th and early 21st centuries, Mexico used four time zones and followed a daylight saving time schedule similar to that of the U.S. The country began observing daylight saving time in 1996 to boost trade and tourism with the United States. Baja California had already been using daylight saving since 1942, in line with California.

Then, in October 2022, Mexico made a decisive move: the Senate voted — 59 to 25 — to abolish daylight saving time nationwide, effective immediately. President López Obrador had proposed the change, arguing that energy savings were negligible (less than 1% of demand), that studies showed the biannual clock change disrupted sleep and health for at least two weeks, and that a majority of Mexicans — 71% according to Interior Ministry polling — opposed the system. The abolition simplified Mexico’s time zone map considerably. The country now operates across three primary zones: Pacific Time (UTC−7, Baja California Norte), Mountain/Central Time for other northern states, Central Time (UTC−6, covering Mexico City and the vast majority of the country), and Eastern Time (UTC−5, Quintana Roo, home to Cancun). Baja California and certain northern border municipalities retained DST to remain in sync with their U.S. counterparts.

The border municipalities exception is particularly fascinating from a data perspective. Cities like Tijuana, Juárez, Nuevo Laredo, and Reynosa continue to observe the U.S. daylight saving schedule because their economies are structurally fused with their American sister cities across the Rio Grande. Workers commute daily across the border; factories operate on American shift schedules; school start times are calibrated against U.S. cities. When the U.S. springs forward in March, Tijuana springs forward too. When most of Mexico stays put on standard time, those border municipalities make the jump, creating a brief annual period where a town in Chihuahua and Mexico City are on the same clock, but a border city in Chihuahua is one hour ahead of the state it sits in. The infographic’s clean number “3” conceals a genuinely dynamic and layered reality.

8 Key Facts about Mexico’s Time Zones:

Mexico currently operates across three primary time zones: Pacific (UTC−7 for Baja California) and Central (UTC−6 for most of the country).
Quintana Roo (UTC−5) — home to Cancun and Tulum — operates on a separate Eastern Time, one hour ahead of Mexico City.
Mexico abolished daylight saving time for most of the country in October 2022, with the Senate approving it by a vote of 59 to 25.
DST was originally adopted by Mexico in 1996 to synchronize with U.S. economic activity and facilitate cross-border trade.
Interior Ministry polling showed 71% of Mexicans opposed daylight saving time before its abolition.
Baja California and border municipalities in Chihuahua, Coahuila, Nuevo León, and Tamaulipas still observe U.S.-aligned DST to facilitate daily cross-border workers and trade.
Sonora state, which borders Arizona, had already abandoned DST in 1999 to match non-DST Arizona — a precursor to the national abolition.
Before 2022, Mexico followed a different DST schedule than the U.S., starting in April rather than March, creating up to 4 weeks each year when the U.S.-Mexico border time zone gap was misaligned.

Rank 12 — Chile: 3 Time Zones

Chile is a unique country geographically. It is a long, narrow strip of land over 4,300 kilometers along South America’s west coast. In many places, you can see the Andes from the coast, and the country stretches from the world’s driest desert in the north to icy channels in Patagonia in the south. Chile’s three time zones reflect its length, even though it runs north to south instead of east to west. Most of Chile uses Chilean Standard Time (UTC−4) in winter, changing to UTC−3 in summer. The Magallanes Region in the far south stays on UTC−3 year-round to avoid the confusion caused by daylight saving time in places with extreme seasonal changes in daylight.

Easter Island — Rapa Nui — is Chile’s most remarkable time zone story. Sitting 3,700 kilometers out in the Pacific Ocean, Easter Island runs at UTC−6 in standard time and UTC−5 during daylight saving. The island, famous for its monumental stone moai statues, is among the most isolated inhabited places on Earth — and its time reflects that isolation. At UTC−6, Easter Island is two full hours behind mainland Chile during standard time, and it shares its time zone with a band of places stretching through Central America and into the western United States. You can stand on Easter Island and be simultaneously closer in time to Denver, Colorado, than to Santiago, the country you politically belong to.

Chile’s approach to daylight saving time has itself been an ongoing experiment. The country has shifted the dates of its clock changes multiple times, and the Magallanes region’s decision to stay on permanent UTC−3 (rather than oscillating between UTC−4 and UTC−3 with the rest of the country) came after years of public frustration with the region’s extreme seasonal light changes making clock adjustments feel absurd. In the long summer evenings of Punta Arenas, the sun sets well after 10 PM regardless of what the clock says, and in the deep of winter, it is dark by mid-afternoon no matter when you decide to set the hands. The Magallanes Region effectively said: pick one time and stay there. That practical wisdom is now reflected in the infographic’s count of three.

8 Key Facts about Chile’s Time Zones:

Chile spans three time zones: mainland Chile Time (UTC−4 standard time), Magallanes Time (permanent UTC−3), and Easter Island Time (UTC−6 standard time).
Easter Island (Rapa Nui) sits 3,700 km west of the Chilean mainland — among the most isolated inhabited islands on the planet.
During standard time, Easter Island (UTC−6) is two hours behind mainland Chile despite being a Chilean territory.
The Magallanes Region adopted permanent UTC−3 to avoid the disruption of daylight saving at high southern latitudes where seasonal light extremes are severe.
Chile as a whole observes daylight saving time, shifting the mainland from UTC−4 to UTC−3 between October and March each year.
Easter Island observes its own daylight saving time, moving from UTC−6 to UTC−5 in summer, in line with mainland Chile’s seasonal shift.
The Chilean government has proposed and debated changes to its DST system multiple times, reflecting ongoing public debate about the optimal clock schedule.
Chile’s narrow north-south geography means its time zones are driven more by distant island territories and political decisions than by east-west continental spread.

Rank 13 — Indonesia: 3 Time Zones

Indonesia is the world’s largest island nation, with about 17,000 islands spread over 5,000 kilometers from Sumatra in the west to Papua in the east. This distance would naturally cover four time zones, but the Indonesian government decided to use only three. In 1963, a Presidential Decree established this simpler system, which began on January 1, 1964. The result is three time zones: WIB (Western Indonesian Time, UTC+7), WITA (Central Indonesian Time, UTC+8), and WIT (Eastern Indonesian Time, UTC+9), each separated by 1 hour.

WIB covers Sumatra, Java, and West and Central Kalimantan. WITA at UTC+8 encompasses Bali, Sulawesi, East and South Kalimantan, and the Lesser Sunda Islands. WIT at UTC+9 applies to Maluku, North Maluku, and all Papuan provinces. The three-zone spread means the sun rises about three hours later in Jakarta than in the Papuan city of Jayapura — and for a country that is 90% Muslim, where the five daily prayer times are calculated from sunrise and sunset, this has very real daily implications for hundreds of millions of people. A government discussion about consolidating all of Indonesia into a single UTC+8 time zone (matching Singapore and Malaysia) has occurred several times, with proponents arguing it would streamline financial markets and facilitate economic integration with regional neighbors. The proposal has consistently failed, partly because a single national clock would severely disrupt the prayer schedules and daily rhythms of Indonesians in the west.

The history of Indonesia’s time zones is considerably more turbulent than the clean three-zone present suggests. During the Dutch colonial period, time zones were frequently adjusted to suit administrative needs. During the Japanese occupation of World War II, the entire Indonesian archipelago was unified under UTC+9 (Tokyo time) as part of the Japanese imperial administrative system. After independence, the zones were gradually realigned toward the current configuration, with the formal three-zone system not fully settled until 1988, when Western Borneo switched from the Central to the Western zone. The clean infographic number of three is the endpoint of a very messy century of chronological negotiation.

8 Key Facts about Indonesia’s Time Zones:

Indonesia spans three official time zones — WIB (UTC+7), WITA (UTC+8), and WIT (UTC+9) — covering roughly 17,000 islands.
The three-zone system was formally established by Presidential Decree and took effect on January 1, 1964.
Geographically, Indonesia spans about 46 degrees of longitude, which would naturally suggest four time zones, but the government compressed them to three.
During World War II, Japan unified the entire Indonesian archipelago under UTC+9 (Tokyo Time) for administrative purposes.
Western Borneo’s shift from the Central to the Western time zone in 1988 was the last major boundary change in Indonesia’s current time zone system.
Indonesia does not observe daylight saving time anywhere in the country.
Proposals to unify Indonesia into a single UTC+8 time zone — matching Singapore and Malaysia — have been discussed at the government level multiple times but have been rejected each time.
The three-hour difference between Jakarta (WIB) and Jayapura (WIT) means that the sun sets two to three hours later in Papua than in Java, creating meaningfully different daily life patterns.

Rank 13 — Kiribati: 3 Time Zones

Kiribati is one of the most remarkable countries in this infographic. It is made up of 33 coral atolls and reef islands spread over an area of ocean larger than the continental United States, but its total land area is only about 810 square kilometers, with just over 110,000 people. Kiribati has three time zones, but what is truly unique is that in 1994, the country created two of them by moving the International Date Line—something no other government had done before.

Before 1994, the Phoenix Islands and the Phoenix Islands — the eastern halves of Kiribati — sat on the western side of the International Date Line, meaning the country was split across two calendar days. When it was Tuesday in Tarawa (Gilbert Islands), it was Monday in Christmas Island (Kiritimati, the Phoenix Islands), even though both were part of the same nation. Scheduling government business, elections, or national broadcasts across a 24-hour internal time difference was absurd. So Kiribati simply announced that its eastern islands would advance from UTC−11 and UTC−10 to UTC+13 and UTC+14, respectively — skipping 23 hours in a single step. The move created UTC+14:00, which had never existed before, and stretched the International Date Line around an enormous eastward bulge to accommodate all of Kiribati on the same calendar day.

The practical impact of that 1994 decision was enormous for one specific reason: UTC+14 is the world’s most advanced time zone, meaning Christmas Island on New Year’s Eve is the first inhabited place on Earth to welcome the new year. Kiribati leveraged this brilliantly, marketing the Phoenix Islands and especially Kiritimati — “Christmas Island” — as the destination for millennial celebrations on December 31, 1999. The three time zones Kiribati observes span UTC+12 (Gilbert Islands, including the capital, Tarawa), UTC+13 (Phoenix Islands), and UTC+14 (Phoenix Islands) — a spread of 2 hours across a nation that fits in a handful of tropical atolls. None of the three observes daylight saving time.

8 Key Facts about Kiribati’s Time Zones:

Kiribati spans three time zones: UTC+12 (Gilbert Islands), UTC+13 (Phoenix Islands), and UTC+14 (Phoenix Islands).
Kiribati created the UTC+13 and UTC+14 time zones in 1994 — they had never existed before that year.
Before 1994, Kiribati was split across two calendar days, with its eastern islands observing UTC−11 and UTC−10.
UTC+14 (Line Islands Time) is the world’s most advanced time zone — the first inhabited places on Earth to start each new day.
Kiritimati (Christmas Island) markets itself as the first inhabited island to celebrate each New Year, a direct result of the 1994 decision.
The Date Line detour around Kiribati is the largest deviation of the International Date Line in the world.
Kiribati’s three time zones span only about 110,000 people — making it the most time-zone-dense nation in the world relative to population.
Despite the country’s wide time zone, none of Kiribati’s islands observe daylight saving time.

Rank 14 — Democratic Republic of the Congo: 2 Time Zones

The Democratic Republic of the Congo is Africa’s second-largest country and the 11th largest in the world, covering about 2.34 million square kilometers along the equator. The Congo River runs through it, and much of the land is covered by tropical rainforest. The country uses two time zones: West Africa Time (WAT, UTC+1) in the west, including the capital Kinshasa, and Central Africa Time (CAT, UTC+2) in the east, covering cities like Lubumbashi, Goma, and Bukavu.

The DRC is notable for being the only country in Africa with more than one time zone. Most of the country’s neighbors — Angola to the west, Zambia to the southeast — use a single time zone. The DRC’s east-west division reflects a genuine geographic reality: the country’s longitude spans roughly 12° to 31° East, crossing the boundary between the UTC+1 and UTC+2 time zones. The split is not driven by politics or colonial decisions so much as by simple geography. The capital, Kinshasa, sitting on the Congo River just across from Brazzaville (Republic of Congo), operates in the same time zone as Nigeria, Cameroon, and West Africa. Lubumbashi, near the Zambian border in the Katanga copper belt, runs on Central Africa Time alongside Zimbabwe, Rwanda, and South Africa.

Neither zone observes daylight saving time, which makes logistical sense given that the DRC sits on the equator. At equatorial latitudes, the sun rises and sets at almost exactly 6 AM and 6 PM year-round — there is virtually no seasonal variation in daylight hours, and therefore no daylight to “save.” This is a pattern shared by all equatorial countries worldwide. The DRC’s steady two-zone system has been essentially unchanged since the country’s independence in 1960. The capital, Kinshasa, and the eastern powerhouse, Lubumbashi, are always exactly one hour apart — a detail that requires active coordination for businesses, broadcasts, and government communications spanning the country.

8 Key Facts about the DRC’s Time Zones:

The DRC is the only country in Africa to maintain more than one time zone.
West Africa Time (UTC+1) applies to Kinshasa and the western DRC; Central Africa Time (UTC+2) applies to Lubumbashi and the eastern DRC.
Approximately 59% of the Congolese population lives in the CAT zone (UTC+2).
Neither time zone observes daylight saving time — consistent with the country’s equatorial position where day length barely changes across seasons.
Kinshasa and Brazzaville (Republic of Congo) — the closest two national capitals in the world, separated by the Congo River — share the same time zone (UTC+1).
The east-west time boundary within the DRC roughly corresponds to the geographic divide between the Congo Basin rainforest and the Katanga plateau.
During Belgian colonial rule, a single time zone was generally applied across the territory for convenience; the two-zone system was solidified after independence in 1960.
Lubumbashi is always exactly one hour ahead of Kinshasa — a detail that requires active coordination for businesses, broadcasts, and government communications spanning the country.

Rank 14 — Ecuador: 2 Time Zones

Ecuador is named for the equator — the line runs right through the country — and it is among the smallest countries in South America. It uses two time zones, both fixed year-round with no daylight saving: Ecuador Time (ECT, UTC−5) for the mainland, and Galápagos Time (GALT, UTC−6) for the Galápagos Islands about 1,000 kilometers offshore in the Pacific. The mainland adopted UTC−5 as its standard in 1931, setting clocks to match the longitude of Quito, the capital. The Galápagos Islands used UTC−5 until 1986, when they switched to UTC−6 to better fit their location further west. In 1992, President Sixto Durán Ballén’s government introduced DST, advancing clocks one hour forward in November. The experiment lasted barely three months before it was reversed in February 1993 — and permanently abandoned. The reason is as elegant as it is obvious in retrospect: Ecuador sits on the equator, where sunrise happens at approximately 6 AM and sunset at approximately 6 PM every single day of the year, with barely any seasonal variation. There is no “extra evening daylight” to be gained by shifting the clock, because the evening daylight does not meaningfully change. The country has maintained stable dual-zone, no-DST timekeeping ever since.

The Galápagos Islands, at UTC−6, align their clocks with Central America rather than with the Ecuadorian mainland. This means that when it is noon in Quito, it is 11 AM among the giant tortoises and marine iguanas of the Galápagos. For tourists flying from mainland Ecuador to the islands, the one-hour adjustment is easy to forget — a missed flight detail that has caught more than one traveler off guard. The Galápagos’ ecological management relies on strict timing for research visits, wildlife monitoring, and fishing schedules, making a clearly defined and stable time zone critically important to the islands’ conservation economy.

8 Key Facts about Ecuador’s Time Zones:

Ecuador uses two time zones: Ecuador Time (UTC−5) on the mainland and Galápagos Time (UTC−6) on the archipelago.
The Galápagos Islands switched from UTC−5 to UTC−6 in 1986 to better align with their westward geographic position in the Pacific.
Ecuador trialed daylight saving time for less than three months in 1992–1993 before permanently abolishing it.
Ecuador’s equatorial location means sunrise and sunset occur at almost exactly 6 AM and 6 PM year-round, making DST practically pointless.
The mainland adopted UTC−5 as its standard in 1931, aligning the country with Peru and Colombia.
The Galápagos Islands are home to approximately 25,000 permanent residents and support one of the world’s most scientifically significant ecosystems.
Travelers between Quito or Guayaquil and the Galápagos must set their watches back one hour on arrival at the islands — a fact that frequently surprises domestic travelers.
Despite being on UTC−6, the Galápagos does not observe daylight saving time, keeping its offset permanently fixed year-round.

Rank 14 — Federated States of Micronesia: 2 Time Zones

The Federated States of Micronesia (FSM) is a Pacific island nation comprising about 607 islands spread across an enormous expanse of the western Pacific Ocean. It is organized into four states — Yap, Chuuk, Pohnpei, and Kosrae — and it uses two time zones. The western states of Yap and Chuuk observe UTC+10, while the eastern states of Pohnpei and Kosrae observe UTC+11. Neither zone observes daylight saving time, consistent with the country’s tropical latitude.

The FSM’s time zone history carries a fascinating historical footnote. When the Caroline Islands were part of New Spain and later the early independent Philippines, the archipelago used Western Hemisphere dating — the islands were effectively across the International Date Line from where they stand now. On December 30, 1844, that changed. The Spanish colonial authorities removed Tuesday, December 31, 1844, from the calendar — skipping directly from Monday the 30th to Wednesday, January 1, 1845 — to bring the Caroline Islands onto Asian time and trading schedules rather than American ones. That single calendar adjustment, removing an entire day, is one of the most radical time zone decisions in history. Today’s FSM time zone map descends directly from that colonial-era switch, which placed the archipelago permanently on the Asian side of the Date Line.

Kosrae’s time zone history is particularly complex even within the modern era. From 1969 to 1999, Kosrae observed UTC+12 — one hour ahead of where it sits today — before reverting to UTC+11 at the turn of the millennium. That shift was part of a broader administrative rationalization of the FSM’s time zones after the country gained independence from U.S. trusteeship in 1986 and began asserting greater control over its own administrative systems. Today’s two-zone FSM, straddling the UTC+10 and UTC+11 boundary, is a compact, clean system that belies the turbulent chronology beneath it.

8 Key Facts about the FSM’s Time Zones:

The Federated States of Micronesia uses two time zones: UTC+10 for Yap and Chuuk, and UTC+11 for Pohnpei and Kosrae.
No daylight saving time is observed anywhere in the FSM.
On December 30, 1844, colonial Spanish authorities removed an entire day from the Caroline Islands calendar to shift from Western to Eastern Hemisphere dating.
Kosrae observed UTC+12 from 1969 to 1999, then reverted to UTC+11 at the start of the millennium.
The FSM gained independence from U.S. trusteeship in 1986 under a Compact of Free Association with the United States.
Yap State in the FSM is famous for its traditional use of giant limestone rai (stone money), some weighing several tons, as currency.
The FSM’s roughly 607 islands span an ocean area approximately the size of the continental United States.
The Caroline Islands’ 1844 calendar jump — removing December 31 — is one of the most dramatic single-day time adjustments in recorded history.

Rank 14 — Kingdom of the Netherlands: 2 Time Zones

The Kingdom of the Netherlands, like France, the UK, and Denmark, is a European country with a Caribbean time zone legacy from its colonial past. The mainland Netherlands—the part most people think of, with tulips, canals, and windmills—uses Central European Time (UTC+1), changing to UTC+2 during European summer time. But the Kingdom also includes the Caribbean Netherlands: Bonaire, Sint Eustatius, and Saba, which all use Atlantic Standard Time (UTC−4) year-round, with no daylight saving.

Aruba, Curaçao, and Sint Maarten are also part of the Kingdom of the Netherlands but as constituent countries rather than special municipalities — they have their own local governance structures while remaining under the Dutch Crown. These islands also use UTC−4 Atlantic Standard Time, without observing daylight saving. The Dutch Caribbean islands are geographically and culturally distinct from one another — Bonaire is a coral-fringed diver’s paradise; Sint Eustatius is a quiet island with a deep history as the first foreign territory to officially salute the American flag during the Revolutionary War; Saba is a tiny dormant volcano rising improbably from the sea. But they share the same clock, and they are all five hours behind their European counterparts in Amsterdam.

The time zone gap between the Caribbean Netherlands (UTC−4) and mainland Netherlands (UTC+1 or UTC+2) creates a five-to-six-hour difference depending on the season — a gap that affects everything from parliamentary broadcast schedules to business calls between island governments and The Hague. It is the same practical challenge faced by France with its Caribbean possessions, and it is a reminder that time zones for small island territories are rarely about the islands themselves but about their relationship with a distant metropolitan authority that keeps an entirely different schedule.

8 Key Facts about the Kingdom of the Netherlands’ Time Zones:

The Kingdom of the Netherlands spans two time zones: CET/CEST (UTC+1/+2) on the European mainland and AST (UTC−4) in the Caribbean.
Bonaire, Sint Eustatius, and Saba are “special municipalities” of the Netherlands and use Atlantic Standard Time year-round.
The Caribbean islands of the Dutch Kingdom do not observe daylight saving time, while the mainland Netherlands follows EU DST rules.
Aruba, Curaçao, and Sint Maarten are separate constituent countries of the Kingdom (not municipalities) but share the same UTC−4 time offset.
The time gap between Amsterdam and Bonaire ranges from 5 hours (winter) to 6 hours (European summer when DST is active).
Sint Eustatius — known as “Statia” — was the first foreign entity to officially recognize the United States as an independent nation, saluting an American naval vessel in 1776.
The Dutch Caribbean islands collectively host some of the most biodiverse coral reef ecosystems in the Atlantic, with Bonaire being a globally recognized marine protected area.
The Kingdom of the Netherlands, though small on the European map, spans UTC−4 in the Caribbean to UTC+1 in Europe — a five-hour difference.

Rank 14 — Mongolia: 2 Time Zones

Mongolia is a landlocked nation in Central and East Asia, covering about 1.56 million square kilometers. You might expect such a wide country to have several time zones, but Mongolia has usually used just one: Mongolian Standard Time (UTC+8), even though the western areas are closer to UTC+7. The official recognition of a second time zone for the far western provinces is what puts Mongolia on this infographic. The provinces of Khovd, Uvs, and Bayan-Ölgii use UTC+7 (Hovd Time), while the rest of the country stays on UTC+8. These are the provinces closest to the Altai Mountains, home to a significant Kazakh population, famous for the tradition of eagle hunting, and separated from Ulaanbaatar by hundreds of kilometers of high steppe and desert. Keeping these provinces one hour behind the capital is simply a reflection of where the sun is in the sky — at UTC+8, sunrise and noon in western Mongolia would occur at astronomically late hours compared to the eastern and central parts of the country. Mongolia abolished daylight saving time in 2017 after years of oscillation, so both its time zones are now fixed year-round with no seasonal adjustment.

The single-hour difference between UTC+7 and UTC+8 in Mongolia is a gentle reminder that even in a country most people know for nomadic traditions and the Gobi Desert, the pressures of modern timekeeping — business coordination, broadcast schedules, government administration — eventually force the kind of formal recognition of geographic time reality that two zones represent.

Mongolia is a country whose population is heavily concentrated in Ulaanbaatar, and the five western provinces covered by Hovd Time account for a relatively small share of the national population, but their distinct solar position earned them their own clock.

8 Key Facts about Mongolia’s Time Zones:

Mongolia has two time zones: Mongolian Standard Time (UTC+8) covering most of the country, and Hovd Time (UTC+7) for the westernmost provinces.
The Hovd Time Zone covers the provinces of Bayan-Ölgii, Khovd, and Uvs, as well as Govi-Altai and Zavkhan.
Mongolia abolished daylight saving time in 2017, and both time zones are now fixed year-round with no seasonal adjustments.
Bayan-Ölgii province, the heart of the Hovd Time Zone, is home to a large Kazakh ethnic minority and a centuries-old tradition of eagle hunting.
Mongolia’s capital, Ulaanbaatar, home to roughly half the country’s total population, uses UTC+8 — the same as Beijing, Shanghai, and Singapore.
Mongolia covers approximately 1.56 million square kilometers, making it the 18th-largest country in the world.
The Altai Mountains, which dominate western Mongolia’s Hovd Time region, form one of the most dramatic mountain landscapes in Central Asia.
Despite its vast territory, Mongolia spans only two time zones — significantly fewer than countries of comparable area — reflecting the relatively narrow longitudinal extent of its populated core.

Rank 14 — Papua New Guinea: 2 Time Zones

Papua New Guinea (PNG) occupies the eastern half of the island of New Guinea and a scattering of islands. Papua New Guinea (PNG) covers the eastern half of the island of New Guinea and several offshore islands in the southwestern Pacific. It uses two time zones, which reflect both political autonomy and geography. Most of the country uses Papua New Guinea Standard Time (UTC+10), based in the capital, Port Moresby.

The second time zone is Bougainville Standard Time (UTC+11), used only in the Autonomous Region of Bougainville, an island group east of the PNG mainland that has been moving toward political independence for decades. Bougainville advanced by 1 hour to 3 AM, entering UTC+11. The Bougainville House of Representatives had voted for the change in September 2014, with the Minister for Commerce and Tourism arguing that the region was disadvantaged by being on the same time as the mainland — sunrise and sunset arrived earlier than most residents preferred. The new zone aligned Bougainville with the nearby Solomon Islands, its nearest Pacific neighbors. It was a quiet but symbolically significant act of self-determination for a region that had fought a bloody civil war for independence from PNG between 1988 and 1998 and that, in a 2019 referendum, voted 98% in favor of full independence.

From a pure numbers perspective, PNG’s two-zone structure reflects the east-west spread of its island geography. Port Moresby, at UTC+10, and Buka (Bougainville’s administrative center), at UTC+11, are about 1,000 kilometers apart, a distance consistent with a one-hour time zone difference. Neither zone observes daylight saving time. The political dimension of Bougainville’s separate clock is unusual in global time zone history — most time zone changes are driven by economic efficiency or geographic logic, while Bougainville’s shift was driven by a region signaling, in the gentlest possible way, that it was already operating on its own terms.

8 Key Facts about Papua New Guinea’s Time Zones:

Papua New Guinea uses two time zones: UTC+10 (PNG Standard Time) for the mainland and UTC+11 (Bougainville Standard Time) for the Autonomous Region of Bougainville.
Bougainville adopted UTC+11 on December 28, 2014, by decision of the Bougainville House of Representatives.
The time change aligned Bougainville with its closest Pacific neighbor, the Solomon Islands.
Bougainville fought a decade-long civil war against the PNG government from 1988 to 1998 over resource disputes and the issue of self-determination.
A 2019 referendum on Bougainville saw 98% of voters support independence from Papua New Guinea, though formal independence has not yet been granted.
Neither of PNG’s two time zones observes daylight saving time.
PNG is home to extraordinary biodiversity and some of the world’s least-explored tropical rainforests, accounting for about 6% of Earth’s total biodiversity across approximately 1% of its land area.
Port Moresby (UTC+10) is among the few national capitals that do not observe daylight saving time and are not in the same zone as any neighboring country’s capital.

Rank 14 — Portugal: 2 Time Zones

Portugal is one of the westernmost countries in Europe, further west than its neighbors, and was once a major maritime and colonial power. Today, it has two time zones: Western European Time (WET, UTC+0) for the mainland and Madeira, and Azores Time (AZOT, UTC−1) for the Azores islands in the mid-Atlantic. Both zones use daylight saving, changing to UTC+1 (mainland/Madeira) and UTC+0 (Azores) in summer. The Azores are about 1,500 kilometers west of Lisbon and are always one hour behind the mainland, matching their location in the Atlantic.

Portugal’s relationship with its own time zone has been oddly turbulent for such a compact country. In 1996, the government switched the mainland from WET to Central European Time (CET, UTC+1) to better align with major EU trading partners. The experiment failed. Dark winter mornings, disrupted school schedules, and a public sense that the country’s clocks no longer matched the natural rhythm of the day led to a swift reversal the same year. Portugal returned to WET — making it one of the very few countries in modern history to voluntarily undo a time zone change shortly after implementing it. The episode is a striking example of how deeply time zone policy can intersect with public psychology and daily life.

Mainland Portugal actually sits geographically further west than UTC+0 would suggest is ideal — by solar time, Lisbon should arguably be on UTC−1, the same zone as the Azores. Instead, the country keeps UTC+0 to maintain alignment with the UK and Ireland, which are its primary economic and political partners in Northwestern Europe. This means that during summer, Portugal observes UTC+1 — creating the somewhat counterintuitive situation of a country on the Greenwich longitude running an hour ahead of the prime meridian. As with many European nations, Portugal’s clock reflects political logic far more than solar reality.

8 Key Facts about Portugal’s Time Zones:

Portugal maintains two time zones: WET/WEST (UTC+0/+1) for the mainland and Madeira, and AZOT/AZOST (UTC−1/0) for the Azores.
The Azores are always one hour behind mainland Portugal, reflecting their mid-Atlantic position about 1,500 km west of Lisbon.
In 1996, Portugal switched to Central European Time (UTC+1) and then reversed the change the same year due to significant public backlash.
Portugal adopted Greenwich Mean Time as its official standard in 1912, despite most of its territory lying west of the prime meridian.
During summer, mainland Portugal runs at UTC+1 — one hour ahead of the prime meridian that passes through the country.
Madeira, despite being geographically further southwest than the Azores, keeps the same time as mainland Portugal for administrative and economic alignment.
Portugal’s proximity to the Atlantic made it the first European power to establish systematic long-distance ocean trade routes in the 15th century — and time zone logistics have always mattered to Portuguese maritime culture.
The Azores Time Zone (UTC−1) places the archipelago in the same standard time as Cape Verde and Iceland — two very different parts of the world geographically.

Rank 14 — South Africa: 2 Time Zones

South Africa is one of the most organized countries in the world for timekeeping. It uses a single national time zone, South African Standard Time (SAST) at UTC+2, all year with no daylight saving. There are no seasonal changes, no exceptions for provinces, and no regional differences. However, the infographic lists South Africa with two time zones because of two small uninhabited islands far south in the Indian Ocean. The Prince Edward Islands, a subantarctic territory managed by South Africa, use UTC+3 (Eastern Africa Time), which is one hour ahead of the mainland.

The Prince Edward Islands consist of Marion Island and Prince Edward Island, two volcanic outcrops in the southern Indian Ocean administered by South Africa as a territory. They are genuinely among the most remote inhabited places on Earth, supporting only a small research station and team of scientists studying the subantarctic ecosystem. Marion Island is particularly important for long-term climate and ecosystem monitoring, as it lies in the path of the Antarctic Circumpolar Current — one of the most powerful ocean currents on the planet. The islands observe UTC+3 because of their geographic position, though the practical distinction between their time and mainland South Africa’s UTC+2 matters mainly to the small research crew and the supply vessels that reach them a few times per year.

South Africa’s decision to observe UTC+2 year-round without daylight saving is grounded in the country’s geometry relative to the sun. Johannesburg and Pretoria sit at about 26° South latitude — far enough from the equator to experience meaningful seasonal daylight variation, but not so far that daylight saving would offer dramatic benefits. A proposal to introduce daylight saving has circulated in South African policy discussions but never advanced, partly because the country’s large agricultural sector prefers stable scheduling, and partly because the southern summer — when DST would operate — coincides with the peak of sub-Saharan tourism and outdoor activity, which already benefits from long natural days.

8 Key Facts about South Africa’s Time Zones:

South Africa uses South African Standard Time (SAST), UTC+2 year-round, across the entire mainland — no daylight saving, no regional exceptions.
The Prince Edward Islands (Marion Island and Prince Edward Island), administered by South Africa in the subantarctic Indian Ocean, use UTC+3.
South Africa is the only country in Africa to administer subantarctic island territories.
Marion Island hosts a permanent South African weather and ecological research station, one of the most remote scientific outposts in the Southern Hemisphere.
UTC+2 is shared by approximately 28 countries, including Zimbabwe, Botswana, Namibia, Mozambique, and most of eastern and central Europe.
South Africa observes no daylight saving time, keeping SAST fixed year-round — a system consistent with most of the African continent.
The Prince Edward Islands are critical to monitoring the health of the Antarctic Circumpolar Current and the broader Southern Ocean ecosystem.
Despite being second only to Nigeria in economic size on the African continent, South Africa’s time zone setup is among the simplest of any large economy in the world.

Rank 14 — Spain: 2 Time Zones

Spain’s two time zones are a historical puzzle. Looking at a map, Spain should probably have just one time zone, UTC+0, like its neighbor Portugal, since they share almost the same longitude. Instead, the Spanish mainland uses Central European Time (UTC+1), moving to UTC+2 in summer, while the Canary Islands off the African coast use Western European Time (UTC+0), changing to UTC+1 in summer. The Canary Islands are geographically and weather-wise more like Morocco than central Europe, and UTC+0 better aligns with their solar time. Spain changed its time from UTC+0 to UTC+1 on March 16, 1940, to align with Germany and German-occupied Europe. Although Spain was officially neutral, it was politically close to the Axis powers. The change was meant to be temporary but became permanent in 1942. After the war, France, Belgium, and the Netherlands also stayed on this time for economic reasons, and Spain did the same. Today, mainland Spain still runs one hour ahead of its solar time, which has led to the well-known “Spanish schedule” of late lunches, late dinners, and midnight social life that many visitors notice.

The consequence is that in western Galicia, the most extreme case, midsummer sunset does not arrive until around 10:15 PM local time. Spanish sleep researchers and public health advocates have consistently argued that Spain’s clock mismatch contributes to genuine health and productivity issues, with the nation sleeping on average 53 minutes less per night than other Europeans. Multiple government commissions have proposed returning to UTC+0, most recently a 2013 parliamentary subcommittee, but no action has been taken. The Canary Islands, sitting at UTC+0, enjoy a time zone that actually matches their solar position — and Canarians experience their day in noticeably better sync with the sun than their counterparts in Madrid.

8 Key Facts about Spain’s Time Zones:

Spain uses two time zones: Central European Time (UTC+1) on the mainland and the Balearic Islands, and Western European Time (UTC+0) on the Canary Islands.
Spain adopted UTC+1 in 1940 under Francisco Franco to align with Germany — a “temporary” wartime decision that has now lasted over 80 years.
Before 1940, mainland Spain used UTC+0 (Greenwich Mean Time), which geographically matched most of the country’s longitude.
The Canary Islands used UTC−1 before 1940 and have used UTC+0 (which better matches their solar position) since March 1940.
In Galicia, the westernmost mainland region, midsummer sunset occurs around 10:15 PM local time due to the misaligned time zone.
In 2013, a Spanish parliamentary subcommittee formally proposed returning to UTC+0, citing productivity and health research, but no legislation followed.
Spain’s late cultural schedule — dinners at 10 PM, social life running to 2 AM — is partly attributed by chronobiologists to the persistent solar-clock mismatch.
The phrase spoken on Spanish TV and radio — “una hora menos en Canarias” (one hour less in the Canaries) — has been a national broadcast staple since 1969.

Closing Analysis: What the Numbers Really Tell Us

A broader analysis of the infographic reveals three primary patterns. First, overseas territories are the principal reason for the high number of time zones in certain countries. France, the United Kingdom, the Netherlands, Denmark, and New Zealand derive most of their time zones from island territories acquired during colonial periods, rather than from the size of their mainland. Absent these territories, most of these countries would rank much lower or not appear on the list at all. The legacy of empires continues to influence time zones even after their dissolution. Countries such as Russia, the United States, and Canada rank highly because their vast landmasses necessitate multiple time zones to align solar and civil time. However, Kiribati, with only 810 square kilometers of land, surpasses Canada due to a 1994 political decision that shifted the International Date Line through its territory. Mongolia, despite its 1.56 million square kilometers, operates with only two zones. While geographic size is a predictor of the number of time zones, it is not the sole determinant.

A third, and perhaps most significant, observation is that time zone decisions are often political. Spain’s current time zone results from choices made during Franco’s regime. Mexico’s border municipalities align with U.S. time due to strong economic ties with American cities. Bougainville adopted UTC+11 as an expression of self-determination. Newfoundland’s half-hour time zone serves as a symbol of regional identity. Kiribati adjusted the International Date Line to unify the nation under a single calendar day and to be the first to celebrate New Year’s Eve. Ultimately, the data in the infographic illustrates how societies organize time in accordance with solar patterns, neighboring influences, and collective identity.