Want to know what the official time is? Setup this Arduino clock, plug it into your dsl/cable router, and always have the exact time. It uses the Internet NTP protocol to get the current date and time, and display it on a LCD. Sounds pretty simple, right?
http://tuxgraphics.org/electronics/200710/avr-ntp-clock.shtml
Become the Maker you were born to be. Try Arduino Academy for FREE!