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It's about time     Do you assume time tomorrow will be just like time today? Sorry to break the news: It's not a safe time to take time for granted. Also atomic clocks, and brief timeline of timekeeping methods. From Timely tidbits http://whyfiles.org/078time/

ClockWorks     Illustrated mechanisms of many historical clocks. Includes: Sundial, Clepsydra, Astrolabe, Candle clock, Sandglass, Weight-driven clock, Spring-driven clock, Pendulum clock, Quartz watch, Cesium atomic clock. From Britannica.com: Clockworks: From Sundials to the Atomic Second http://www.britannica.com/clockworks/main.html

Calendars Through the Ages     Explore the fascinating history of the human endeavor to organize our lives in accordance with the sun and stars. Historical information and FAQ's on various calendars' years, months, and days of the week. Includes Julian, Gregorian, Jewish, Islamic, Chinese, Mayan, and others. From Calendars through the Ages - Home http://webexhibits.org/calendars/

Daylight Saving Time     Why do we have Daylight Saving Time? History from Benjamin Franklin to the present. U.S. law and practice. Worldwide time change dates. Just as sunflowers turn their heads to catch every sunbeam, so too have we discovered a simple way to get more from our sun. We've learned to save energy and enjoy sunny summer evenings by switching our clocks an hour forward in the summer. A WebExhibits original. From About Daylight Saving Time - History, rationale, laws & dates http://webexhibits.org/daylightsaving/