[Boulder, Colo. : National Institute of Standards and Technology, Physics Laboratory, Time and Frequency Division ; Washington, D.C. : U.S. Naval Observatory, 2000]-
Walk through time : history of timekeeping from ancient to modern times -- Calendars through the ages : system of counting the days, months, and years -- Daylight saving time -- ClockWorks -- It's about time : advances in timekeeping accuracy and atomic clocks -- Quartz watch.
Summary
A "clickable" time zone map of the United States takes the user to another screen that shows the correct time for states in that time zone. The "time exhibits" link takes the user to government and non-government sites showing various ways time has been measured over the centuries.
