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Time Service Dept., United States Naval Observatory
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tycho.usno.navy.mil/time.html
general info
time
science
service
clock
dept
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Liberty High School
on 28 May 10
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Liberty High School
on 28 May 10
Official Source of Time for the Department of Defense (DoD)and for the Global Positioning System (GPS),and a Standard of Time
Official Source of Time for the Department of Defense (DoD)and for the Global Positioning System (GPS),and a Standard of Time
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U.S. National Debt Clock : Real Time
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usdebtclock.org
government
Economics
shared by
Sydney Schatz
on 27 Jul 11
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