Time
Links
A Walk Through Time
http://physics.nist.gov/GenInt/Time/time.html
An illustrated history of timekeeping from ancient times to the present.
Countdown
http://www.spiders.com/countdown/
Calculate the exact time in days, hours, minutes and seconds from now until your birthday or any other event.
Daylight Saving Time
http://www.mrdowling.com/601-daylight.html
Why do we use daylight savings time and who invented it?
International Standard Date and Time Notation
http://www.cl.cam.ac.uk/~mgk25/iso-time.html
International Standard ISO 8601 specifies numeric representations of date and time. It helps to avoid confusion caused by the many different national notations.
Latitude and Longitude
http://www-spof.gsfc.nasa.gov/stargaze/Slatlong.htm
Introduction to latitude and longitude, a way of calculating exactly where you are anyplace on earth and a way to tell time.
Local Times Around the World
http://www.timeanddate.com/worldclock/
Find out what time it is anywhere in the world.
Make Your Own Star Clock
http://www.lhs.berkeley.edu/StarClock/starclockprintout.html
Learn how to tell time by finding constellations in the night sky.
Making a Horizontal Sundial
http://www.lmsal.com/YPOP/Classroom/Lessons/Sundials/sundials.html
Learn how to make a sundial. Instructions are for beginners, intermediate, or advanced, and work for either the northern or southern hemispheres.
Making a Sun Clock
http://www.exploratorium.edu/science_explorer/sunclock.html
Before there were clocks, people used shadows to tell time. Learn how to make your own sun clock!
Time
http://www.mrdowling.com/601-time.html
Just how do we measure time and what has Greenwich England got to do with it?