Time Zones and the 24-Hour Clock
A time zone is a longitudinal strip of the Earth's surface, stretching from pole to pole and sharing the same time of day or night. We have 24 hours in a day. Therefore it seemed logical to allow for time changes on an hourly basis. In practice, however, the zone boundary lines are drawn to accommodate political units as a number of countries differ considerably from international practice in time designation. As the time zones extend around the world, the 24th zone has to lie next to the first one.
After completing this module, you will be able to:
Provide a brief overview of the history of time zones.
Define twenty-four hour clock.
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Concepts and TerminologyConfidential, TRX Inc.7 November 2007