How do Time Zones Work?

The Earth is divided into 24 time zones and each one measures 15 longitudinal degrees. The idea is based on how the Earth rotates. Different parts of the planet are night while others are day. The 24 time zones represent each hour of the day. You can find more information here: http://www.time.com/time/world/article/0,8599,1933079,00.html
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