Daylight Hours Explorer. Shows the hours of daylight received during the year for an observer at a given latitude.
This is an important factor contributing to the seasons. Running this animation on your computer... right-click to download daylighthoursexplorer.swf and daylighthoursexplorer.html to the same directory open the html file in a browser to run the animation. Daily Biorhythm - Check your Biorhythms (free biochart/biorythm) Air traffic in 24 hours. 24-hour time lapse of global air traffic.