NCERT Class 6 Geography: Chapter 2, Question C.4
There are 24 time zones in the world.
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NCERT Class 6 Geography: Chapter 2, Question C.4
There are 24 time zones in the world.
In 1884, a system was devised to divide the world into 24 time zones, as the Earth takes 24 hours to complete one rotation. The Greenwich Meridian is the prime meridian from where the Earth is divided into time zones. As per an international agreement, each time zone is 15° longitude or 7.5° longitude so that the difference between the standard time and GMT can be expressed as a multiple of one hour or half an hour.
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