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All of the Different Time Zones

Without the use of time zones, it would be impossible to efficiently use and measure time. It would be great if everyone in the world could designate noon as the time when the sun is at the highest point in the sky, yet this cannot be the case due to the fact that the sun is at its highest point at various times in different regions of the world because the Earth is rotating 15 degrees per hour. Therefore, the sun reaches its highest point at different times depending on where you are. The concept behind time zones is to divide the world into 24 equal zones (15 degrees each) and set the clocks according to each zone. A Scottish- born Canadian named, Sir Sanford Fleming, was first to introduce this idea during the 19th century. The system of having time zones was not instituted globally until 1929. It is one of the most crucial systems of modern times. Furthermore, the time zones work in a specific way. They are measured referring to a certain point, the Greenwich Meridian, which is also known as the Prime Meridian. Its location is the Royal Observatory in Greenwich, England. Time at the Greenwich Meridian point is mostly referred to as Greenwich Mean Time (GMT). More recently, however, it is said that Coordinated Universal Time (UTC) is more accurate because it uses an atomic time scale. Times in other countries are determined by using UTC as a starting point. For example, a country that is said to have the time UTC+5 means that when it is noon in Greenwich, it is 5:00 pm in that country. Also, if the time is UTC-2, it means that when it is noon in Greenwich, it is 10:00 am in that country. Moreover, Russia, being the country with the most time zones, has eleven time zones, including Kaliningrad and the Baltic Sea as a part of it. Interestingly, China is largest country with just one time zone.

Here is a list of major world cities, countries, and regions and their time zones:

Beijing: UTC+8
Bermuda: UTC-3
Brussels: UTC +1
Buenos Aires: UTC-3
Cairo: UTC+2
Fiji: UTC+13
Galapagos: UTC-6
Honolulu: UTC-10
Jakarta: UTC+7
Jerusalem: UTC+3
London (UK): UTC
Los Angeles: UTC-8
Madrid: UTC+1
Melbourne: UTC-10
Mexico City: UTC-6
Moscow: UTC+3
New Delhi: UTC+5.30
New York: UTC-5
Paris: UTC+1
Rome: UTC+1
South Pole: UTC+10
Sydney: UTC+10
Tehran: UTC+4.30
Tokyo: UTC+9
Washington D.C.: UTC-5
Vancouver: UTC-7

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