How did time zones originate? Detailed answer

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How did time zones originate? Detailed answer

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How did time zones originate?

Until time zones were established, there was a lot of confusion, especially when people used train timetables. To put an end to this confusion, the United States began using a system of standard time zones in 1883. In 1884, an international conference was convened in Washington, D.C. to establish this system throughout the world.

The earth was divided into 24 zones, each of which included 15 degrees of longitude. This was a natural division, since the Earth rotates at a rate of 15 degrees per hour. Within the same time zone, the time is the same, and the difference between adjacent zones is one hour. Greenwich (this is near London, where the observatory is located) in England was chosen as the starting point. If it is noon at Greenwich, then in the first zone to the east of it (in Berlin) it is 13:11. And in the first belt to the west 7 hours. In New York, which is in the fifth time zone from Greenwich to the west, it is 15 am at this time. And in Moscow - east of Greenwich, it's in the evening - XNUMX hours.

The United States is divided into 4 time zones along the 75th, 90th, 105th and 120th meridians. The times in these time zones are called Eastern, Central, Mountain, and Pacific Standard Time. On the opposite side of the globe from Greenwich, there is another defining line: the international day line. This line runs approximately along the 180th meridian. When it's noon at Greenwich, it's midnight on the day change line. Crossing this line, a person gains an extra day or loses it, depending on where he is moving.

Author: Likum A.

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Lawn mower against crime 08.03.2018

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