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Time -- Systems and standards -- United States Daylight Time 
 "Starting in March 2007, daylight time ... will begin on the second Sunday in March and end on the first Sunday in November." Includes a brief history of daylight-saving time in the U.S. From the U.S. Naval Observatory, Astronomical Applications Department. http://aa.usno.navy.mil/faq/docs/daylight_time.html Topics: Holidays and Observances Individually, Ready Reference & Quick Facts, Science Last updated Mar 5, 2009 The Official U.S. Time
Accurate to within 1 second. Pick a time zone in the the United States or its territories. The official U.S. government time is displayed in large, easy-to-read numerals, along with the coordinated universal time and a world map displaying where the sun is shining. "Time Exhibits" provides information about daylight-saving time, calendars, clocks, watches, timekeeping, and more. From the National Institute of Standards and Technology (NIST)and the U.S. Naval Observatory (USNO). http://www.time.gov/ Topics: Astronomy, Holidays and Observances Individually, Ready Reference & Quick Facts, Science, Science, Technology Last updated Mar 5, 2009 Saving Time, Saving Energy: Daylight Saving Time, Its History and Why We Use It
Explains why we adjust our clocks one hour forward in the spring and back in the fall ("spring forward, fall back"). Also find and explanation of resultant energy savings and the history of daylight-saving time. Includes trivia about time and links to related sites. From the California Energy Commission. http://www.energy.ca.gov/daylightsaving.html Topics: Holidays and Observances Individually, Ready Reference & Quick Facts, Science, Science Last updated Mar 5, 2009 |
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