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Using Time Zones

If there's one universal standard, it's that days consist of 24 hours. However, those 24 hours are not the same around the world. The world is divided into 24 latitudinal regions, each of which sets its times so that midnight occurs at 0:00 and midday occurs at 12:00. That results in 5:00 in one region being 6:00, 7:00, 8:00, or whatever in other regions. The time within each latitudinal region of the world is known as a time zone.

In the days when people were concerned with only their immediate vicinity, that wasn't a problem. Now, though, many of us communicate with people throughout the world, so time zones are something we have to be concerned about.


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