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The Official U.S. Time - http://www.time.gov/
Shows the official time in each time zone. A service provided by the National Institute of Standards and Technology and the U.S. Naval Observatory. |
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Today in History - http://memory.loc.gov/ammem/today/today.html
Events from American history are illustrated by digitized items from the Library of Congress American Memory historic collections. |
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World Time Zone Map - http://aa.usno.navy.mil/faq/docs/world_tzones.php
Map showing the world's time zones. |
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When Does Daylight Saving Time Begin and End? - http://aa.usno.navy.mil/faq/docs/daylight_time.php
History of daylight saving time and a brief calendar of the time change. |
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A Walk Through Time - http://physics.nist.gov/GenInt/Time/
An illustrated history of timekeeping from ancient times to the present. A presentation of the National Institute for Standards and Technology Physics Lab. |