Though it used to consist of five time zones, the Communist government changed the country to only one in the late 1940s as part of an effort to streamline it. Last updated: February 14, 2017. Top 10 Largest Countries to Only Have one Time Zone. The easternmost time zone is twelve hours behind the UTC and uses UTC-12 as its time tag while the westernmost time zone uses UTC+12. All the countries around the world have unique shapes and sizes. Profile Quizzes Subscribed Subscribe? Try to name the countries with the biggest areas to only have one time zone Area in square kilometers, according to Wikipedia. Since 1967, the US Department of Transportation (DOT) has been responsible for governing time zones in the country. India’s time zone is one of the few time zones in the world that is offset from Greenwich Mean Time by a half hour interval, rather than a full hour interval. Some are so big that they have to use 11 time zones to cover the entire nation and some are happy with only one standard time. The chinese must take strain as the difference is 6 hours from one end of the country to the next.

It has a total land area of 6.602 million square miles. More quiz info >> First submitted: February 14, 2017: Times taken: 443: Quiz and answer stats >> … Quiz by Sappa. It has a total land area of 6.602 million square miles. 8. China's one-time state. The third largest country in the world, China sprawls across the Asian continent, spanning a sixth of the world’s breadth from the 75 degrees to almost 135 degrees west, by longitude. The time zone in the US that covers the biggest land area is the Central Time Zone. Theorectically it should have more than one time zone. Rate: Nominate. Nominated. Image: Vin Crosbie. 9. The United States' Time Zone History The US was divided into 4 standard time zones on November 18, 1883, and jurisdiction for the zones was given to the Interstate Commerce Commission (ICC). India, the world’s seventh-largest country by land area at 3 million square kilometers (1.1 million square miles), also has only one official time zone. There are 23 countries with at least two time zones (plus Antarctica which has at least ten unofficial time zones). So much wall, so little time. Russia is the largest country in the world, spanning 11 time zones. China is a vast country, yet it has only one time zone, called Beijing Standard Time (BST), or China Standard Time (CST), which is Greenwich Mean Time, plus 8 hours (GMT+8). The International Date Line (IDL), located at 180 degrees longitude delineates one day from the next; time incrementally advances as one travels west of the IDL. Most countries, especially the smaller ones, have only one time zone. South Africa, is the 9th largest country in the world, and it uses a common time throughout the country.