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NASA eClips™: Longitude and Time Zones
February 22, 2012

Target: Grades 6-8

Length: 4 minutes 25 seconds

NASA eClips™: Real World
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What determines how long a second, minute, or hour lasts? Learn about the development of the units of time and how they depend on the rotation of Earth on its axis. Learn how time zones are related to lines of longitude.

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Page Last Updated: July 28th, 2013
Page Editor: NASA Administrator