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Time, Clocks, Calendars, and Fun Stuff

Time Management

This resource page is devoted to our fascination with time and to understanding our historical quest to better manage time and keep track of it.


timeTimeandDate.com has a variety of information that is time and date related, such as yearly and monthly calendars, counters, countdown, and a world clock which shows the current time in cities all over the world.



timeHow old are you in minutes? This online age calculator computes your age in years, or months, or days, or hours, or minutes. Find out how many days, months, or years have passed since you were born.  Also, calculate how many days are left until your next birthday.

Online Age Calculator


timeTimeandDate.com has useful time and date facts that are bound to make you the star of any time-management seminar you attend. For example, you’ll find out that a “jiffy” usually indicats a very short period of time, but it’s formally defined in the fields of Physics and Chemistry as the time required for light to travel a centimeter. A “jiffy” is equal to about 33 picoseconds and a picosecond is one trillionth of a second so when someone tells you they’ll be back in a jiffy, they mean they’ll be back in 33 trillionth of a second. That’s faster than a New York minute!

Time and Date Trivia


timeFind out about the evolution of methods used to measure time through the ages from Stonehenge to atomic clocks.

National Institute of Standards and Technology – A Walk Through Time


timeWhat’s the history of wristwatches? How do they evolve? How does a self-winding watch work? What’s inside them? How does a quartz watch work?

The History of Watches and How They Work


timeWhy is clock time so Important? The On Time Exhibit at the Smithsonian’s National Museum of American History explores the changing ways we’ve measured, used, and thought about time over the past three hundred years. Learn how America has learned to live by the clock.

On Time Exhibit at the Smithsonian’s National Museum of American History


timeWhen is a minute not a minute? Does the length of a minute seem shorter when you’re late for class as opposed to when you are listening to a lecture? Does time fly when you’re having fun? Learn more about time by visiting the online time exhibit of the the nature of time. What is time? What does it mean to us? These are a but a few of the interesting questions asked by the British Museum’s online exhibit exploring the nature of time.

British Museum: Explore time


timeAmerica’s largest timekeeping collection.

The National Watch and Clock Museum


timeExplore how we organize our lives according to the moon and the sun. In ancient Rome, a priest observed the sky and announced a new moon cycle to the king. For centuries afterward, Romans referred to the first day of each new month as Kalends (from their word “calare,” which means “to proclaim”). The word calendar derived from this custom.

There are many calendars in use throughout the world. Learn about the holidays and holy days in other parts of the world and how to keep track of them. Discover more about how the following cultures and religions use different ways to keep track of important dates: Chinese, Christian, Indian, Islamic, Jewish, Mayan, Roman, Ethiopian, Persian (Iran), Balinese, and Baha’i.

Calendars used In Various Cultures


timeThe most extensive collection of horological resources on the internet. This is your gateway to all aspects of the art and science of making timepieces and measuring time.

National Association of Watch and Clock Collectors